摘要
计算了过氧化物的半衰期和在聚丙烯(PP)中的残留量,比较了氢调法和可控降解法生产的PP在相对分子质量分布、耐热氧稳定性、加工稳定性等方面的差别结果表明：可控降解法PP的生产过程中,PP在挤出机内的停留时间为过氧化物半衰期的10倍以上,过氧化物残留量在10μg/g以下,不会影响PP的稳定性与氢调法PP相比,可控降解法PP具有更好的加工稳定性和耐热氧稳定性。
This paper calculated the half-life of a kind of peroxide and the residual content of the peroxide in polypropylene (PP), and compared the differences in molecular weight distribution, embrittlement time and the processing stability of the PP resins produced by hydrogen modulation process and controllable degradation process, respectively. The results show that during the production course of PP prepared by controllable degradation process, the residence time of the PP resin in the extruder is over 10 times of the half-life of the peroxide and the residual content of the peroxide is less than 10 μg/g, so that there exists no impact on the stability of the resin. Compared with the PP resin produced by hydrogen modulation process, the PP resin produced by controllable degradation process possesses better processing stability and resistance to thermooxidation, except its higher yellow index.
出处
《合成树脂及塑料》
EI
CAS
北大核心
2005年第3期30-32,39,共4页
China Synthetic Resin and Plastics
