一种耐热氧老化PVC胶料及其制备方法

本发明公开了一种耐热氧老化PVC胶料及其制备方法。本发明中的耐热氧老化PVC胶料由以下重量份数的原料制备而成：PVC树脂40-60份，改性热稳定剂4-12份，增塑剂5-10份，抗氧化剂1-3份，润滑剂0.5-2份，改性填料6-15份。本发明提供的耐热氧老化PVC胶料，首先，对纳米二氧化钛进行表面改性，改善了填料与基体的相容性，提高了基体的韧性；其次，对热稳定剂进行改性，采用自由基聚合的方法，向热稳定剂中引入羟基和硫代酰胺结构，这两种结构在聚氯乙烯受热时都能提高聚氯乙烯的热稳定性，提高基体的耐热氧化性能。 The invention discloses a thermo-oxidative aging resistant PVC (polyvinyl chloride) sizing material and a preparation method thereof. The thermo-oxidative aging resistant PVC rubber material is prepared from the following raw materials in parts by weight: 40-60 parts of PVC resin, 4-12 parts of a modified heat stabilizer, 5-10 parts of a plasticizer, 1-3 parts of an antioxidant, 0.5-2 parts of a lubricant and 6-15 parts of a modified filler. According to the thermo-oxidative aging resistant PVC sizing material provided by the invention, firstly, nano titanium dioxide is subjected to surface modification, so that the compatibility of filler and a matrix is improved, and the toughness of the matrix is improved; secondly, the heat stabilizer is modified, hydroxy