摘要
选用与聚丙烯相容性优异的弹性体A、相容性一般的弹性体B作为增韧剂,研究弹性体的含量对材料橡胶形貌的影响。研究发现,随着弹性体含量的增加,两种弹性体改性的聚丙烯材料橡胶形貌都经历了从球状到条状的形貌突变,其中相容性优异的弹性体A在含量20%~25%(wt.)出现了形貌突变,相容性一般的弹性体B在含量15%~20%出现了形貌突变。进一步研究发现,在25%弹性体B增韧聚丙烯材料中将其中2.0%的弹性体B替换成2.0%的弹性体A,从而改善弹性体B与聚丙烯材料的相容性之后,其橡胶形貌从条状分布变为球状分布。最终研究结果表明,弹性体与聚丙烯材料的相容性对最终的弹性体形貌有着重要影响,弹性体与聚丙烯材料的相容性越好,其橡胶形貌趋向于球状分布,弹性体与聚丙烯材料的相容性越差,其橡胶形貌趋向于条状分布。
Elastomer A with excellent compatibility with polypropylene and elastomer B with general compatibility were selected as toughening agents to study the ef fect of the content of elastomer on the material rubber morphology. It was found that, with the increase of the content of elastomer, the morphologies of the two kinds of elastomer modifi ed polypropylene materials changed from spherical to strip. Among them, elastomer A with excellent compatibility changed in 20%~25% content, and elastomer B with general compatibility changed in 15%~20% content. Further studies showed that the rubber morphology changed from strip distribution to spherical distribution after replacing 2.0% elastomer B with 2.0% elastomer A in 25% elastomer B toughened polypropylene material to improve the compatibility of elastomer B and polypropylene material. The fi nal results show that the compatibility of elastomer and polypropylene material has an important infl uence on the fi nal morphology of elastomer, the better the compatibility of elastomer and polypropylene material, the rubber morphology tends to spherical distribution, the worse the compatibility of elastomer and polypropylene material, the rubber morphology tends to strip distribution.
作者
赵鹏伟
谷晓杰
孙刚
ZHAO Peng-wei;GU Xiao-jie;SUN Gang(Shanghai Kingfa Sci.&Tech.Dvpt.Co.,Ltd.,Shanghai Engineering Plastics Functional Engineering Technology Center,Shanghai 201714,China;Saic Volkswagen Automobile Co.LTD.,Shanghai 201805,China)
出处
《合成材料老化与应用》
2022年第3期14-16,共3页
Synthetic Materials Aging and Application
