Abstract
The purpose of this work was to research on the application properties of waterborne polyurethane (WPU) and organic montmorillonite (OMMT) in room-temperature-vulcanizated silicone rubber (RTV) used as mold materials. The first part dealt with the application of WPU in RTV matrix. The composite with 3% WPU showed the highest tensile strength and elongation at break, 4.1 MPa and 1441%, respectively. These properties were improved about 28% and 55% compared with that pure RTV. The COLE and COVE of RTV/WPU-3 was 0.2×10−4∼1.2×10−4K−1 and 2.7×10−3∼4.4×10−3K−1, respectively. These values were lower compared with that of pure RTV. The second part dealt with the application of OMMT in RTV/WPU composites. When 3% OMMT was added, the tensile strength and elongation at break were increased to 5.6 MPa and 1534%, respectively. The COLE and COVE of RTV/WPU-3/OMMT-7 was 0.32×10−4∼0.94×10−4 K−1 and 0.32×10−3∼2.3×10−3K−1. These values showed an obvious decrease compared with that of RTV/WPU-3 composite. After the addition of 3% OMMT, the acid and alkali resistance of these composites were improved. X-ray diffraction (XRD) and scanning electron microscope (SEM) were also used in the investigation of the microtopography of these RTV composites.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Progress in Rubber, Plastics and Recycling Technology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.