Epoxy modification with poly(vinyl acetate) and poly(vinyl butyral). I. Structure, thermal, and mechanical characteristics

被引：0
|
作者：
Brantseva, T. V. [1 ]
Solodilov, V. I. [2 ]
Antonov, S. V. [1 ]
Gorbunova, I. Y. [3 ]
Korohin, R. A. [2 ]
Shapagin, A. V. [4 ]
Smirnova, N. M. [1 ]
机构：
[1] Russian Acad Sci, AV Topchiev Inst Petrochem Synth, Polymer Composites & Adhes Lab, 29 Leninsky Prospect, Moscow 119991, Russia
[2] Russian Acad Sci, NN Semenov Inst Chem Phys, Lab Reinforced Plast, 4 Kosygin St, Moscow 119991, Russia
[3] Mendeleev Univ Chem Technol Russia, Dept Polymer Proc Technol, Miusskaya Sq 9, Moscow 125047, Russia
[4] Russian Acad Sci, AN Frumkin Inst Phys Chem & Electrochem, Lab Struct & Morphol Invest, 31-4 Leninsky Prospect, Moscow 119071, Russia
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2016年 / 133卷 / 41期
关键词：
blends; mechanical properties; phase behavior; thermoplastics; thermosets; PHASE-SEPARATION; FRACTURE PROPERTIES; TOUGHENED EPOXY; MORPHOLOGY; RESINS; MICROSTRUCTURE; MISCIBILITY; TOUGHNESS; BEHAVIOR; KINETICS;
D O I：
10.1002/APP.44081
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Efficiency of the application of high strength heat resistant thermoplastics for improving fracture toughness and impact properties of epoxy resins motivated authors to try large-scale production thermoplastics for the same purpose. Epoxy/anhydride systems were modified by up to 8 wt % poly(vinyl acetate) (PVAc) and up to 6 wt % poly(vinyl butyral) (PVB). In epoxy-PVAc blends it was possible to obtain morphologies with continuous thermoplastic phase. However, only sea-island morphologies with a very small size of PVB-rich phase were observed in epoxy-PVB matrices. The former type of morphology allowed a notable 2.4-fold increase in the fracture toughness of epoxy resin and simultaneous up to 30% decrease in its' impact strength. The latter type of morphology caused a notably lower (45%) enhancement of the epoxy fracture toughness combined with a 50% increase in its' impact strength. (C) 2016 Wiley Periodicals, Inc.
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页数：14
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