Fabrication Of Triazine Thiols Derivatives And Study On Vulcanizing CPE

Chlorinated polyethylene(CPE) belongs to one of the special rubbers of good performance and studying curing system is the most important part of the applied basic research of CPE rubber. Besides, it is also found that CPE elastomers crosslinked by triazine thiols derivatives have the advantage of being environmentally friendly, nontoxic and light color to products, making the study of synthesis of triazine thiols monosodium derivative and the putting it into use of CPE rubber a meaningful research. Which can enrich CPE curing system and provide basic research datum for the application of exploiting CPE rubber. In the study, the main content is as follows:1. Firstly,6-(dibutylamino)-1,3,5-triazine-2,4-dithiol and 6-aniline-1,3,5-triazine-2,4-dithiol were prepared from cyanuric chloride and their basic structure was gained by the FTIR. After that, DB and AF were used as the vulcanizing agents to cure CPE. The curing reaction kinetics was studied by Vulkamete method, and the kinetic parameters, such as, apparent activation energy were obtained. What’s more, the influence of the vulcanizing temperature on mechanics performance of the rubber was also investigated. The results show that the apparent activation energy of AF vulcanization system is lower than that of DB vulcanization system, and the mechanical performance of AF cured CPE is better than that cured by DB.2. Secondly, the influence of various accelerator and acid absorbing agent on vulcanization of CPE was studied in detail. The results of vulcanization curves with different recipes and the mechanical performance of cured CPE suggest that, under the action of CZ accelerator, either AF or DB can cure CPE quicker than other accelerators, and ZnO is the best acid-accepter. The cured CPE with better mechanical performance can be prepared when 2phr vulcanizator is added, and 3phr CZ accelerator is used.3. Finally, using TEOS as raw materials, SiO2 microspheres were fabricated via Stober method. Then, the SiO2 microspheres were modified with 3-mercaptopropyltriethoxysilane (KH580). And microstructure of the prepared HS-SiO2 was investigated with Fourier transform infrared spectroscopy (FTIR), transmission electron microscope (TEM) and energy dispersive spectrometer (EDS). Using TCY(triazine thiols) as the vulcanizator and the vulcanization behavior of CPE/1,3,5-Triazine-2,4,6-trithiol (TCY)/HS-SiO2 system was investigated by both cure-meter method and differential scanning calorimetry (DSC) method under different temperatures. The results suggest that, the Ea are 71.94kJ/mol and 72.00kJ/mol respectively, and HS-SiO2 particles participate the reaction of CPEyTCY. Besides, the HS-SiO2 microspheres are helpful to modify the mechanical performance of cured CPE/TCY rubber.