Scholarlink

<p>ACS resin synthesized by using chlorinated polyethylene (CPE) rubber instead of polybutadiene rubber of ABS resin has improved the shortcomings of poor weather resistance, flame retardancy, and antistatic property of ABS resin. However, the poor thermal stability of CPE rubber makes it degrade by dehydrochlorination reaction at lower temperature. Due to the multiphase structure of ACS resin, the thermal degradation process involves not only thermal degradation of one component but also interaction between multiple components. In this paper, ACS resin with different content of CPE rubber (18 mass% and 25 mass%) was synthesized by high-temperature bulk polymerization. The thermal degradation behaviors of ACS resin, CPE rubber, SAN resin, and CPE-g-SAN copolymer were investigated by thermogravimetric analysis. The kinetic parameters of thermal degradation were calculated using Kissinger method, and thermal degradation mechanism of ACS resin was clarified. Experimental results showed the thermal stability of CPE rubber was significantly improved by grafting of SAN molecular chains. The thermal stability of ACS resin gradually decreased with increasing content of CPE rubber. Thermal degradation behavior of ACS resin was similar to that of CPE rubber and CPE-g-SAN copolymer, which can be divided into two stages. The low-temperature stage involved the dehydrochlorination reactions of CPE rubber and CPE-g-SAN copolymer, which led to formation of cross-linked structure between molecular chains. The high-temperature stage was thermal degradation of polyene structure formed after dehydrochlorination reactions, and the coke layer formed because of cross-linked reactions of polyene structure. Therefore, increasing the grafting ratio or decreasing the content of CPE rubber was helpful to improve the thermal stability of ACS resin. Exploring thermal degradation behavior and mechanism of ACS resin were helpful to popularize application field of ACS and provide theoretical basis for enhancing thermal stability of ACS resin.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Study on the thermal stability of ACS resin synthesized by high-temperature bulk polymerization

  • 期刊论文

  • 发表日期：

    2025年6月24日

查看全文
  • Mingdong Li,
  • Liting Sun,
  • Bing Nie,
  • Jianying Ma,
  • Chunlei Cao

摘要

ACS resin synthesized by using chlorinated polyethylene (CPE) rubber instead of polybutadiene rubber of ABS resin has improved the shortcomings of poor weather resistance, flame retardancy, and antistatic property of ABS resin. However, the poor thermal stability of CPE rubber makes it degrade by dehydrochlorination reaction at lower temperature. Due to the multiphase structure of ACS resin, the thermal degradation process involves not only thermal degradation of one component but also interaction between multiple components. In this paper, ACS resin with different content of CPE rubber (18 mass% and 25 mass%) was synthesized by high-temperature bulk polymerization. The thermal degradation behaviors of ACS resin, CPE rubber, SAN resin, and CPE-g-SAN copolymer were investigated by thermogravimetric analysis. The kinetic parameters of thermal degradation were calculated using Kissinger method, and thermal degradation mechanism of ACS resin was clarified. Experimental results showed the thermal stability of CPE rubber was significantly improved by grafting of SAN molecular chains. The thermal stability of ACS resin gradually decreased with increasing content of CPE rubber. Thermal degradation behavior of ACS resin was similar to that of CPE rubber and CPE-g-SAN copolymer, which can be divided into two stages. The low-temperature stage involved the dehydrochlorination reactions of CPE rubber and CPE-g-SAN copolymer, which led to formation of cross-linked structure between molecular chains. The high-temperature stage was thermal degradation of polyene structure formed after dehydrochlorination reactions, and the coke layer formed because of cross-linked reactions of polyene structure. Therefore, increasing the grafting ratio or decreasing the content of CPE rubber was helpful to improve the thermal stability of ACS resin. Exploring thermal degradation behavior and mechanism of ACS resin were helpful to popularize application field of ACS and provide theoretical basis for enhancing thermal stability of ACS resin.