Abstract
The new generation of newly developed materials, namely the high-crystallinity and high temperature polypropylene random copolymer, called PP-RCT, increases the crystalline capability of polypropylene, which allows pipes produced from this material to operate at higher pressures at elevated temperatures. Pressure tests on pipes made of PP-RCT materials show a resistance over a period of 50 years at 7000C (1580 F) 5 MPa (725 psi) compared with 3.2 MPa (464 psi) for standard materials PPR. By reinforcing PP-RCT with aluminum, glass and basalt composite results in a more resistant structure. As a result of the traction tests, it was found that in all three samples the tensile strength exceeds the manufacturer s limit (10 - 12.7 MPa), the values obtained being: st1 = 8 MPa - sample no. 1; st2 = 13 MPa - sample no. 2; st1 = 11 MPa - sample no. 3. The fiber glass insert is less resistant, the best variant being the basal insect sample (st2 = 13 MPa). Elongation at break for specimen no. 3 was recorded at 0.027 mm / mm. Tests on these material combinations were performed for stretching and flexing requests and compared to 3D created virtual models. Simulations of internal pressure behavior were also performed for different material configurations and the results were compared with the experimental data and the data supplied by the manufacturers.
Highlights
Results and discussionsThe MTS Bionix multifunction system features the standard three-point bending resistance system
The new generation of newly developed materials, namely the high-crystallinity and high temperature polypropylene random copolymer, called PP-RCT, increases the crystalline capability of polypropylene, which allows pipes produced from this material to operate at higher pressures at elevated temperatures
Compared to the standard polypropylene copolymer (PPR), which shows only the monoclinic form (α-form), the crystalline structure of PP-RCT consists of a high degree of hexagonal form (β form) and to a small extent of the monoclinic form
Summary
The MTS Bionix multifunction system features the standard three-point bending resistance system. The measuring system establishes a zero point of the position of the force application device, point where, if the movement is upward (traction, for example) the displacements and forces values will be with the plus sign and if the movement has them down (bending, compression) the values of displacements, applied forces and voltages will be displayed minus [18-24]. The shift values (arrow) on the abscissa are ordered from right to left starting from the zero point and the ordered values of applied force and tensions will be ordered from top to bottom Both graphs (force-displacement and tension-displacement) have a linear portion parallel to the abscissa, the portion corresponding to the empty distance traveled from the zero point until the roll of the force applicator reaches the specimen. The values recorded in the graphs in figures 5-10 are for the specimens of the above dimensions and are tabulated (tables 1-3)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
