添加剂对溶剂抽提处理聚丙烯外观的影响  

Effects of Additives on the Polypropylene Appearances after Solvent Extraction

作　　者：尹朝清 张爽爽 吴俊 YIN Chaoqing;ZHANG Shuangshuang;WU Jun(Shanghai Kingfa Science&Technology Co.,Ltd.,Shanghai 201714,China;Shanghai Engineering Research Center of Functionalizing Engineering Plastics,Shanghai 201714,China;Kingfa Science&Technology Co.,Ltd.,Guangzhou 510000,China)

机构地区：[1]上海金发科技发展有限公司,上海201714 [2]上海工程塑料功能化工程技术研究中心,上海201714 [3]金发科技股份有限公司,广东广州510000

出　　处：《塑料工业》2024年第6期146-150,共5页China Plastics Industry

基　　金：上海市2022年度“科技创新行动计划”启明星项目(22QB1403500)。

摘　　要：针对改性聚丙烯(PP)高温抽提处理后外观劣化的难题,研究了在3种高温(75℃)抽提环境下,单一抗氧剂、成核剂以及滑石粉对PP在纯水、碱性氢氧化钠溶液以及酸性甲酸溶液中颜色稳定性的影响。研究表明,抗氧剂的引入会进一步劣化PP抽提后的颜色稳定性,受阻酚类主抗氧剂的劣化作用尤其显著,部分成核剂与滑石粉可小幅度地降低抽提后PP颜色的色差,滑石粉的质量分数对色差的影响并无明显的规律。For the modified polypropylene(PP),to solve the problem of appearance deterioration after extraction,the effects of single antioxidant,nucleating agents and talcum powder on the color stability of PP in pure water,alkaline sodium hydroxide solution and acid formic acid solution were studied under three different extraction conditions(75℃).The results show that the introduction of antioxidant further degrades the color stability of PP after extraction,and the deterioration functions of the primary antioxidants of hindered phenols are particularly significant.Partial nucleating agents and talcum powder slightly reduce the color differences of PP after extraction.The influences of the mass fractions of talcum powder on the color differences are not obvious.

关 键 词：聚丙烯 溶剂抽提 颜色稳定性 滑石粉 受阻酚 半受阻酚 主抗氧剂 辅抗氧剂 

分 类 号：TQ325.1+4[化学工程—合成树脂塑料工业]