Transparent film material polyvinyl chloride resin and preparation method thereof

The invention discloses transparent film polyvinyl chloride resin and a preparation method thereof, and relates to the technical field of polyvinyl chloride resin. According to the invention, a BNP + CNP composite initiation system in which BNP replaces EHP is adopted, so that initiator residues in the resin are reduced, and the anti-aging performance of the resin is improved; on the basis, a novel hindered phenol antioxidant is introduced, so that the thermal-oxidative degradation resistance of the polymer is further improved, and the prepared polyvinyl chloride resin has the characteristics of good thermal stability, few fish eyes and good hue. 本发明公开了一种透明膜材聚氯乙烯树脂及其制备方法，涉及聚氯乙烯树脂技术领域。本发明采用BNP替代EHP后的BNP+CNP复合引发体系，降低树脂中引发剂残留，提升树脂抗老化性能；在此基础上引入新型受阻酚类抗氧剂，进一步提升聚合物抗热-氧化降解，制得的聚氯乙烯树脂具有热稳定性能好、鱼眼数量少和色相良好的特性。