High Temperature Operation Research Articles

Facile preparation of flower-like NiO/In2O3 composite for sensitively and selectively detecting NO2 at room and lower temperatures

As a typical n-type semiconductor, In2O3 is often used in gas sensors due to the wide band gap, adjustable morphology and good electrical conductivity. However, the pristine In2O3 has some disadvantages, such as higher operating temperature, poor sensing performance to low concentrations of gases. In this work, we fabricated flower-like NiO/In2O3 composites via a facile one-pot hydrothermal method, and investigated their gas sensitivity to various concentrations of NO2 at different temperatures. The responses (Rg/Ra) of NiO/In2O3-0.2 composite to 0.1–80 ppm NO2 are 2.5 ∼ 5.8 times higher than those of pristine In2O3 at the optimum temperature of 150 °C, respectively. The room-temperature response of the NiO/In2O3-0.2 composite to 20 ppb NO2 is 1.82 with the limit of detection (LOD) of 5 ppb, indicating great application potential for NO2 detection. Moreover, the NiO/In2O3-0.2 composite has the excellent reproducibility, good long-term stability and selectivity. The specific morphology with larger surface area and the formation of p-n heterojunction synergistically enhance the sensing properties of NiO/In2O3 composite, demonstrated by DFT calculation and experiments. This work provides a facile fabrication of flower-like In2O3–based composites for room-temperature detection of ppb-level NO2.

The correlation between the iodine value of coconut shell carbon and their reaction performance for NO2 to NO

AbstractBACKGROUNDThe precise detection of nitrogen dioxide (NO2) requires the conversion of NO2 to nitric oxide (NO) using a molybdenum conversion furnace. Currently, molybdenum wire is utilized as the conversion agent for the molybdenum furnace; however, the high operating temperature of the molybdenum wire can inadvertently convert ammonia (NH3) in industrial exhaust gas to NO, potentially impacting the accuracy of the detection process. Consequently, there is a pressing need to develop low‐temperature conversion agents. The study aims to establish a correlation between the iodine value, which characterizes the liquid‐phase adsorption properties of activated carbon (AC), and its capacity for NO2 conversion, with the potential to provide valuable theoretical insights supporting the development of commercial molybdenum furnace conversion agents.RESULTSThe iodine value of coconut shell carbon (C) is closely related to their reaction performance for NO2‐to‐NO among three samples with different iodine values. AC‐900, AC‐1200 and AC‐1500 exhibited notable NO2‐to‐NO conversion capabilities. Specifically, AC‐900 demonstrated significantly superior reaction performance compared to AC‐1200 and AC‐1500. Under conditions of 175 °C and 1 L min−1, the NO2 conversion rates for AC‐900, AC‐1200 and AC‐1500 were measured at 97.3%, 88.2% and 86.4%, respectively. Furthermore, the evaluation of AC‐1200 and AC‐1500 at different flow rates at 125 °C revealed a decrease in NO2 conversion with increasing gas flow rate. AC‐1200 exhibited better reaction performance compared to AC‐1500.CONCLUSIONThe structure–activity relationship between iodine value of coconut shell C and their NO2‐to‐NO performance is revealed. The capacity of AC to convert NO2 is significantly influenced by the presence of oxygen (O) functional groups and the proportion of micropores. The content of micropores and O‐containing functional groups, especially phenolic hydroxyl groups, decreases with the increase of iodine value, leading to a decrease in the reaction performance of the conversion agent. © 2024 Society of Chemical Industry (SCI).

An InGaAs Vertical-Cavity Surface-Emitting Laser Emitting at 1130 nm for Silicon Photonics Application

A highly strained InGaAs quantum well (QW) vertical-cavity surface-emitting laser (VCSEL) with low threshold current density, high efficiency and output power emissions around 1130 nm was grown by MOCVD. Its static characteristics at room temperature and high operation temperature were studied in detail. The 7 μm oxide aperture device exhibits a threshold current of 0.68 mA, corresponding to a threshold current density of 1.7 kA/cm2. The slope efficiency is 0.43 W/A and the maximum output power is 3.3 mW. Continuous-wave (CW) operation in the 10–80 °C temperature range is observed. The slope efficiency is almost constant at 10–80 °C. The threshold current becomes lower at high temperatures thanks to the alignment between gain peak and cavity mode. The 3 μm oxide aperture device’s lasing in single mode with the RMS spectral width of 0.163 nm and orthogonal polarization suppression ratio (OPSR) is ~15 dB at 25 °C. The small-signal response analysis indicates that reducing the parasitics of the device and refining the fabrication process will improve the dynamics response characteristics. These results indicate that the 1130 nm GaAs-based VCSEL with highly strained InGaAs QWs is expected to be used as source for silicon photonics.

Simulation Analysis and Experimental Research on Electric Thermal Coupling of Current Bearing

With the advancement of industries such as high-speed railways, new energy vehicles, and wind power, bearings are frequently exposed to various electric field environments, leading to the need for lubricating oil films of bearings to withstand voltage. One of the major issues caused by the breakdown discharge process of the lubricating oil film in bearings is the generation of local instantaneous high temperatures. This temperature rise is a key factor contributing to problems such as high operating temperature of bearings, surface damage in the contact area, and degradation of lubrication performance. This research article focuses on the comprehensive influence of bearing friction and electrical factors. It establishes a heat source calculation model and a temperature field simulation model specifically for current-carrying bearings. This study analyzes both the overall temperature rise of bearings and the local temperature rise resulting from breakdown discharge. Furthermore, the accuracy of the simulation analysis is verified through experiments. The temperature field simulation and experimental results consistently indicate that electrical environmental factors can cause an increase in the overall temperature rise of a bearing. Additionally, the breakdown and discharge of the lubricating oil film generate local instantaneous high temperatures in the contact area of the bearing.

Ultra-dense SnO2 QDs-decorated MXene nanosheets with high water dispersibility for rapid NH3 sensing at room temperature

The demand for sensitive and rapidly detecting gas sensors is increasing across various industries, ranging from environmental monitoring to medical diagnostics. Various harmful gases pose significant health risks, necessitating detection below permissible exposure limits where metal oxide semiconductor (MOS) gas sensors have garnered attention due to their sensitivity, rapid response, and cost-effectiveness. However, their high operating temperatures and limited portability have presented challenges. In this study, a novel gas sensing approach utilizing a hybrid material consisting of SnO2 quantum dot (QD) nanoparticles integrated with Ti3C2Tx MXene sheets has been developed. Originating from the abundance of nucleation sites on MXene for particle deposition, SnO2 QD nanoparticles of 2–3 nm size were densely decorated. In contrast with previous approaches, SnO2-Ti3C2Tx hybrids were in a water-dispersible form, allowing excellent solution processability. The resulting hybrid, water-dispersible SnO2-Ti3C2Tx MXene (WSM), exhibited remarkable improvements in gas response and response time at room temperature. Particularly, WSM demonstrated exceptional selectivity for ammonia gas, with a more than hundredfold increase in response compared to pristine MXene. Furthermore, the excellent dispersibility of WSM in water was also utilized to fabricate MXene-based sensors entirely through solution processes, demonstrating comparable performance to traditionally created WSM sensors.

Type IV cracking of P92 steel welded joint used in China power plants

ABSTRACT P92 (9Cr-1.8W–0.5Mo-NbV) martensite steel is widely used in high-temperature pipes of ultra-supercritical boilers in China. During high-temperature operation, microstructural evolution of the heat affected zone (HAZ) across welded joint leads to type IV cracking failure. In this article, microstructural evolution and type IV cracking of P92 steel welded joint in an actual 605℃ supercritical boiler were analysed. The results show the cracking appeared in the fine-grained heat affected zone (FGHAZ). Laves phase and M23C6 phase clustered around the cavity. Their precipitation and coarsening promote the nucleation and growth of cavities. The Z phase was also observed in the heated affected zone. Compared with other zones, FGHAZ has lower dislocation density and more degeneration of tempered martensite lath, the coarsening of Laves phase and M23C6 phase is more severer in FGHAZ. These factors led to the deterioration of the creep properties and type IV cracking.

A Comprehensive Review of Thermal Management in Solid Oxide Fuel Cells: Focus on Burners, Heat Exchangers, and Strategies

Solid Oxide Fuel Cells (SOFCs) are emerging as a leading solution in sustainable power generation, boasting high power-to-energy density and minimal emissions. With efficiencies potentially exceeding 60% for electricity generation alone and up to 85% when in cogeneration applications, SOFCs significantly outperform traditional combustion-based technologies, which typically achieve efficiencies of around 35–40%. Operating effectively at elevated temperatures (600 °C to 1000 °C), SOFCs not only offer superior efficiency but also generate high-grade waste heat, making them ideal for cogeneration applications. However, these high operational temperatures pose significant thermal management challenges, necessitating innovative solutions to maintain system stability and longevity. This review aims to address these challenges by offering an exhaustive analysis of the latest advancements in SOFC thermal management. We begin by contextualizing the significance of thermal management in SOFC performance, focusing on its role in enhancing operational stability and minimizing thermal stresses. The core of this review delves into various thermal management subsystems such as afterburners, heat exchangers, and advanced thermal regulation strategies. A comprehensive examination of the recent literature is presented, highlighting innovations in subsystem design, fuel management, flow channel configuration, heat pipe integration, and efficient waste heat recovery techniques. In conclusion, we provide a forward-looking perspective on the state of research in SOFC thermal management, identifying potential avenues for future advancements and their implications for the broader field of sustainable energy technologies.

Numerical analysis of the radiative heat transfer and fluid flow between two cylinders using a high-order efficient Probabilists’ Hermite polynomial based collocation method

Radiative effects are useful in physics and engineering, especially in high-temperature operations and space technology. The impact of thermal radiation is important in managing the heat transfer process in the polymer production sector. This work examines the impact of the Soret and Dufour effect on the mass and heat transfer in the fluid flow between two cylinders. The only thing that creates the flow is the inner cylinder extending beneath the motionless outer cylinder. Thermal radiation and nonuniform heat source/sink are also considered. Through the application of similarity transformations, the governing nonlinear differential equations for this flow dynamics are converted into nonlinear ordinary differential equations (ODEs). After that, these simplified equations are solved by applying the collocation method with Probabilists’ Hermite polynomial. The physical behavior of important parameters is examined in depth using graphical representations. The results of a comprehensive examination are presented in tabular data. Result reveals that, the heat, momentum, and mass transfer fields are all significantly impacted by the gap size. As the Dufour number and radiation parameter value grows, the thermal profile also rises. The concentration profile rises as the Soret number values increases, whereas the rise in the Schmidt number shows the reverse pattern.

Design and optimizing the liquid distributor of a rotating packed bed by the analysis of liquid flow behavior

Rotating packed beds (RPBs) have been widely applied in multiphase systems. When handling some extreme operating condition systems, finding a suitable pump to provide pressure to force the feeding liquid to be evenly distributed by the distributor of the RPB is very costly. In this work, we designed new liquid distributors by using the kinetic energy of the rotating shaft as driving force to obtain uniform distribution. The performance of the liquid distribution has been investigated in terms of liquid flow behavior, liquid velocity, and impacting angle (α). Compared with bar and cantboard distributors, the radlamelle liquid distributor had the best distribution performance. By further optimization of the radlamelle structure, the left-hand wheel had better dispersion performance with α varying from 24.3 to 79.1°. This new liquid distributor without pump pressure expands the applications of the RPB in ultra-low or high temperature and high pressure operating conditions.

Detection of NO2 at ppm-level using Al-doped CeO2 based gas sensor with high sensitivity and selectivity at room temperature

Nanostructured metal oxides have gained significant attraction in the field of gas sensors because of their size-dependent, superior catalytic capabilities with better gas adsorption and desorption behaviour. However, their high operating temperature limits their scalability in real-time applications. In this work, we fabricated the pristine and Al-doped CeO2 nanoparticles for Room-Temperature (RT) NO2 detection. Compared to other interfering gases, the fabricated sensor shows a strong preference for detecting NO2, indicating a high level of selectivity. Interestingly 5% Al-doped CeO2 exhibited a remarkable 247% response to 25 ppm of NO2, which is three times greater than the pristine. Furthermore, the sensor exhibits improved response and recovery times of 64 s and 52 s, respectively. It also demonstrates excellent repeatability and stability of 91% over the period of 56 days. Thus, the significant improvement in the sensing performance is attributed to the increase in oxygen vacancies, charge imbalance and enhancement in specific surface area due to the effect of Al doping. Furthermore, these findings will provide a new approach to develop real-time gas sensors for room temperature applications.

Fabrication of neutron absorbing metal hydride entrained ceramic matrix shield composites

With significant improvement in High Temperature Superconductors (HTS), several projects are adopting HTS technology for fusion power systems. Compact HTS tokamaks offer potential advantages including lower plant costs, enhanced plasma control, and ultimately lower cost of electricity. However, as compact reactors have a reduced radial build to accommodate shielding, HTS degradation due to radiation damage or heating is a significant and potentially design limiting issue. Shielding must mitigate threats to the superconducting coils: neutron cascade damage, heat deposition and potentially organic insulator damage due x-rays. Unfortunately, there are currently no hi-performance shielding materials to enable the potential performance enhancement offered by HTS. In this work, we present a manufacturing method to fabricate a new class of composite shields that are high performance, high operating temperature, and simultaneously neutron absorbing and neutron moderating. The composite design consists of an entrained metal-hydride phase within a radiation stable MgO ceramic host matrix. We discuss the fabrication, characterization, and thermophysical performance data for a series of down-selected composite materials inspired by future fusion core designs and their operational performance metrics. To our knowledge these materials represent the first ceramic composite shield materials containing significant metal hydrides.

Applications of Geothermal Energy for Desalination: A Review Technological Advancement and Water Security

Geothermal energy, harnessed through the Earth's thermal resources, emerges as an enduring and sustainable remedy to tackle the urgent concern of water scarcity through desalination. By harnessing the innate thermal reservoirs within the planet, geothermal energy provides a distinctive avenue for generating heat and electricity, particularly when synergistically aligned with desalination procedures. To understand the insights of the implications of geothermal energy for desalination, we conducted a comprehensive literature review analysis. Main objectives of the review are to (i.) disseminate insights into geothermal-driven desalination, (ii.) explore potentialities and obstacles of geothermal-driven desalination, and (iii.) evaluate forthcoming environmental, socio-economic predicaments associated with this approach. We selected 50 peer reviewed scholarly communications published using Google Scholar from 2000 to 2022, focusing on impactful English-language publications within esteemed scientific journals. We found multi-effect evaporation/distillation (MED); multi-stage flash distillation (MSF); thermal vapor compression (TVC) and mechanical vapor compression (MVC). Membrane processes include electrodialysis (ED), reverse osmosis (RO), and membrane desalination are the common techniques used across mainly in Australia, USA, UAE, Sub-Saharan and African nations, and Japan. The integration of innovative designs of these methods can enhance the efficacy and cost-efficiency of geothermal desalination systems. Furthermore, critical environmental, social, and economic concerns linked to geothermal-driven desalination were identified. We noted that high-capacity factor for stable heat supply, independent of seasonal changes, ideal temperatures (70-90° C) for low-temperature desalination, cost-effectiveness with simultaneous power and water production, environmentally friendly with no emissions, versatile to meet energy demand across scales are some of main advantages of selection of geothermal energy for desalination. Some studies showed that geothermal energy for desalination is practical and effective, especially in areas facing water scarcity, strengthening water security. However, challenges persist, necessitating inventive solutions encompassing the pursuit of robust materials designed for high-temperature operation and streamlining energy conversion and integration processes. Other foreseen difficulties include the potential environmental impacts on geothermal reservoirs and the necessity for careful resource management to maintain a fair socio-economic equilibrium. Thus, the future research direction should be mainly focus on harnessing geothermal heat to drive the process, significantly reducing energy consumption and mitigating carbon emissions to potentially be employed across the world.
 
 Keywords: Carbon emission mitigation, Desalination, Energy conservation, Geothermal Energy, Water security

Evaluation of Rheological Properties of Polymer-Modified Asphalt Binders and Mastics with Organic Additive—Imidazoline

The article presents the results of testing the asphalt binder modified with SBS copolymer (5%) and its mixture with mineral fillers called asphalt mastics. The aim of the research and analysis was to check the possibility of using an organic additive in the form of imidazolines and to assess their impact on the viscoelastic properties of the obtained asphalt mastics. The main advantage of using imidazoline is the increased resistance of asphalt mixtures to low-temperature cracking at the top of the road route and reducing its maintenance costs. Based on the examination of the adhesion of the binder with the addition of various imidazolines to the aggregate, a selection was made from six analyzed subtypes. One of them was selected for further research. The tests were carried out in a dynamic shear rheometer in a wide temperature range from −36 °C to 82 °C, determining the most important parameters of the tested materials, i.e., dynamic shear modulus (|G*|), phase angle (δ) and the non-recoverable creep compliance (Jnr). The test results and their analysis confirmed the beneficial effect of imidazoline on the viscoelastic properties of mastics in the low-temperature range, even at the lowest content of 0.2%. Based on the results of the determination of Jnr and |G*|/sinδ in the range of high operating temperatures, no significant deterioration in permanent deformation parameters was observed. Moreover, the use of imidazoline reduces technological temperatures during the production of HMA used in the pavement and, therefore, reduces CO2 emissions into the atmosphere.

Design Optimization of a Horizontal Particle Receiver for a Modular Beam Down Receiver CSP

CSP research is focused on increasing the economic competitiveness of this technology as compared to conventional and emerging energy generators. Higher temperature operation conditions represent a pathway toward cost reductions since they enable a relatively smaller solar field area (typically ~40-50% of the plant cost) for the same electrical output. For example, supercritical CO2 power cycles with solid particles as the HTF could enable >600°C operations and a ~50% power bloc cycle efficiency (considerably higher than steam cycles, <40%). Additionally, small modular systems could increase competitiveness through reduced financial risk, increased system flexibility, and the value of additional services that a modular CSP could offer to the electricity grid (frequency control, peaking supply, etc.). This study investigates the Beam Down Receiver (BDR) configuration as a design that could be well-suited to meet these goals while also overcoming some of issues with particle receivers, such as particle attrition, advective losses, and operation control. In particular, this work introduces a novel horizontal particle receiver (HPR) and analyzes the main design parameters, including tower height, BDR size, radiation flux on the receiver, and receiver nominal power. The analysis shows that tower heights between 35m to 60m are ideal for high temperature receiver capacities of 8-15 MWth, and that this configuration can achieve a minimized LCOH of ~24 USD/MWth. These results suggest that BDRs combined with particle mediums could represent a viable high temperature, high efficiency CSP alternative.

Enabling All-Solid-State Lithium-Carbon Dioxide Battery Operation in a Wide Temperature Range.

Flexible all-solid-state lithium-carbon dioxide batteries (FASSLCBs) are recognized as a next-generation energy storage technology by solving safety and shuttle effect problems. However, the present FASSLCBs rely heavily on high-temperature operation due to sluggish solid-solid-gas multiphase mass transfer and unclear capacity degradation mechanism. Herein, we designed bicontinuous hierarchical porous structures (BCHPSs) for both solid polymer electrolyte and cathode for FASSLCBs to facilitate the mass transfer in all connected directions. The formed large Lewis acidic surface effectively promotes the lithium salt dissociation and the CO2 conversion. Furthermore, it is unraveled that the battery capacity degradation originates from the "dead Li2CO3" formation, which is inhibited by the fast decomposition of Li2CO3. Accordingly, the assembled FASSLCBs exhibit an excellent cycling stability of 133 cycles at 60 °C, which is 2.7 times longer than that without BCHPSs, and the FASSLCBs can be operated repeatedly even at room temperature. This BCHPS method and fundamental deactivation mechanism provide a perspective for designing FASSLCBs with long cycling life.

Process implications on the stability and reliability of 300 mm FAB MoS2 field-effect transistors

Recent advances in fabricating field-effect transistors with MoS2 and other related two-dimensional (2D) semiconductors have inspired the industry to begin with the integration of these emerging technologies into FAB-compatible process flows. Just like in the lab research on 2D devices performed in the last decade, focus during development is typically put on pure technology-related issues, such as low-temperature growth methods of large-area 2D films on target substrates, damage-free transfer from sacrificial substrates and growth of top-gate oxides. With maturing technology, the problem of stability limitations caused by oxide traps is gradually coming into focus now. Thus, here we report an in-depth analysis of hysteresis and bias-temperature instabilities for MoS2 FETs fabricated using a 300 mm FAB-compatible process. By performing a comprehensive statistical analysis on devices with top gate lengths ranging between 18 nm and 10 μm, we demonstrate that aggressive scaling results in additional stability problems, likely caused by defective edges of the scaled top gates, in particular at higher operation temperatures. These are important insights for understanding and addressing the stability limitations in future nanoscale 2D FETs produced using FAB process lines.

Time dependence of SrVO3 thermionic electron emission properties

Single phase, polycrystalline perovskite oxide SrVO3, with its intrinsic low effective work function and facile synthesis process, is a promising thermionic electron emitter cathode candidate, in which previous works have shown evidence of an effective work function as low as 2.3 eV. In this work, we study the vacuum activation process of SrVO3 and find that it has promising emission stability over 15 days of continuous high temperature operation. We find that SrVO3 shows surface Sr and O segregation during its operation, which we hypothesize is needed to create a positive surface dipole, leading to a low effective work function. Emission repeatability from cyclic heating and cooling suggests the promising stability of the low effective work function surface, and additional observations of drift-free emission during 1 h of continuous emission testing at high temperature further demonstrate its excellent performance stability. This assessment of the emission stability over time and the interplay of evolving surface chemistry with emission behavior are necessary for understanding how best to prepare, process, and operate SrVO3 cathodes.

Controlled crystallinity of LiTaO3 surface layer for single-crystalline Ni-rich cathodes for lithium-ion batteries and all-solid-state batteries

Various functional materials have been explored as surface-coating layers for Ni-rich cathode materials used in lithium-ion batteries (LIBs) aiming to enhance their long-term cycling performance and electrochemical stability under high-voltage operation. In particular, lithium tantalate (LiTaO3) has received considerable attention as a promising candidate due to its distinct physicochemical properties, including high ionic conductivity, wide voltage window, low band-gap energy, and excellent mechanical strength. These characteristics are beneficial for effective surface stabilization of Ni-rich cathode materials, which currently suffer from poor cycling performance, mainly due to issues related to structural instability with elevated Ni concentrations. In this respect, we report the benefits of surface coating with LiTaO3 on the electrochemical properties of single-crystalline Ni-rich cathode materials (SNCM) for successful implementation in high-energy LIBs. The controlled crystallinity of the LiTaO3 surface layer directly affects the reversibility as well as interfacial stability of the SNCM cathode under various operating conditions. The tailored crystallinity of LiTaO3 surface layer is mainly responsible for enhancing the cycle performance of SNCM cathodes under high-temperature (60 °C) and high-voltage (4.5 V vs. Li/Li+) operations. Our findings will significantly contribute to the development of robust and reliable cathode materials for high-energy LIBs.

Versatile Testing Facility for Heavy Liquid Metal–Cooled Fast Reactor at the University of Pittsburgh

Lead-cooled fast reactor (LFR) technology offers technical benefits such as high temperature operation, virtually no loss of coolant accidents, and operation at atmospheric pressure. Liquid lead is nonreactive with air and water, has a high boiling point, poor neutron absorption, and excellent heat transfer properties. Regardless of substantial advantages, the corrosive nature of liquid lead is a critical challenge in implementing LFR technology. This problem is especially pronounced at higher temperatures (>500°C). These issues have motivated research on materials and sensing capabilities in liquid lead. The University of Pittsburgh has developed a pool-type materials testing facility in international collaboration with universities, national labs, and industry. This new facility is a complement to existing loop-type facilities by being able to confirm corrosion testing results at high temperatures and higher coolant velocities, as well as by providing a large open volume of liquid lead to allow for the versatile testing of sensing instruments. In the design and manufacturing of the new facility, several important factors, such as temperature, oxygen concentration, and fluid velocity, were carefully considered. Successful running of the new testing facility will help industry demonstrate the reliability of structural materials and sensing instruments for LFRs.

Mechanical property and thermal stability of short carbon fiber reinforced polysulfonamide composites

AbstractIn this paper, polysulfonamide‐based composite materials (SCF/PSAf composite) reinforced by the short carbon fiber were prepared. The mechanical properties and thermal stability of SCF/PSAf composite were characterized experimentally and compared with those of polysulfonamide‐based single‐polymer composites (PSA SPCs). Results showed that SCF/PSAf composites exhibit higher thermal stability due to the excellent thermal stability of SCFs. Furthermore, the additional short carbon fibers also considerably enhance the flexure strength of PSA SPCs due to the strong interfacial bonding between SCF and PSAf. The properties and understanding of SCF/PSAf composite obtained in this work can benefit further applications of this novel composite material.Highlights SCF/PSAf composites are prepared by hot compression, and the adhesion between the PSA matrix and SCF is good. The flexural strength of the SCF/PSAf composite is about 2.5 times higher than that of PSA SPCs. The storage modulus of SCF/PSAf composites is about 3.5 times higher than that of PSA SPCs. The addition of short carbon fibers helps to improve the thermal properties of SCF/PSAf composites. SCF/PSAf composite has a stronger ability to resist deformation and a higher operating temperature than the PSA SPCs do.