摘要
ABS(丙烯腈-丁二烯-苯乙烯共聚物)与聚对苯二甲酸丁二酯(PBT)是热力学不相容体系,因此ABS不能均匀、稳定地分散在PBT基体中,不能起到理想的增韧作用。在PBT／ABS共混体系中加入增容剂SAG(苯乙烯-丙烯腈-甲基丙烯酸缩水甘油酯共聚物)进行反应性共混,并对共混物的力学性能进行了研究,结果表明:少量SAG就能使ABS/ PBT共混体的冲击韧性大幅度提高,冲击强度高达800J／m以上,但SAG过量则会导致共混体的冲击强度下降。
Poly（ butylene terephthalate） （PBT）is an important engineering thermoplastic with many useful properties. In this paper, core - shell impact modifier of acrylonitrile - butadiene - styrene （ABS） was used to toughen PBT. However, simple blends of poly （butylene terephthalate） （PBT）with acrylonitrile -butadiene -styrene （ABS） has poor mechanical properties due to thermodynamic immiscibility, therefore, compatibilization is demanded to obtain a PBT/ABS blends with desired properties. In this study, styrene/acrylonitrile/glycidyl methacylate（SAG） copolymer is used to compatibilize PBT/ABS blends. PBT/SAG/ABS system was studied. The impact measurements and SEM observation identified the compatibilization effect of SAG. Mechanical tests indicated that super tough PBT was prepared when SAG was introduced into PBT/ABS blends. The notched Izod impact strength of PBT can reach 800 J/m. However, the impact strength of PBT/ABS decreased with the increase of SAG to certain content.
出处
《金山油化纤》
2006年第3期7-10,共4页
Petrochemical Technology in Jinshan
