New Approach to Fabricate Novel Fluorosilicone Thermoplastic Vulcanizate with Bicrosslinked Silicone Rubber-Core/Fluororubber-Shell Particles Dispersed in Poly(vinylidene Fluoride): Structure and Property

被引：38
作者：
Chen, Yukun [1 ]
Wang, Youhong [1 ]
Xu, Chuanhui [2 ]
Wang, Yanpeng [1 ]
Jiang, Changyun [3 ]
机构：
[1] S China Univ Technol, Minist Educ, Key Lab Polymer Proc Engn, Guangzhou 510640, Guangdong, Peoples R China
[2] Guangxi Univ, Sch Chem & Chem Engn, Nanning 530004, Peoples R China
[3] ASTAR, Inst Mat Res & Engn, 3 Res Link, Singapore 117602, Singapore
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2016年 / 55卷 / 06期
关键词：
MORPHOLOGY DEVELOPMENT; PHASE INVERSION; ENERGY-STORAGE; POLYMER BLENDS; NANOPARTICLES; NANOCOMPOSITES; TRANSFORMATION; POLYPROPYLENE; PREDICTION; MECHANISM;
D O I：
10.1021/acs.iecr.5b04676
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Herein, we report a new method, core-shell dynamic vulcanization, to prepare a poly(vinylidene fluoride) (PVDF)-based thermoplastic vulcanizate (TPV) with cross-linking-controlled silicone rubber (SR)/fluororubber (FKM) core-shell particles. The bicrosslinked SR-core/FKM-shell structure effectively stabilized the blending morphology of TPV, avoiding the direct contact of PVDF and SR. Results of transmission electrom microscopy (TEM), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and Fourier transform-infrared (FT-IR) confirmed the formation of core-shell structure. In the PVDF/FKM/SR (40/30/30) TPV, the size of core-shell particle was similar to 2 mu m, and the thickness of the FKM shell was, similar to 400 nm. The cross-link density of SR-core and FKM-shell could be controlled to tailor the properties of the TPV. It was found that the tan delta value of core-shell bicrosslinked TPV could be maintained at around 0.3 in range of 1-1000 cpm. The TPV exhibited good mechanical properties in which its tear strength was as high as 58 kN m(-1). The new PVDF/SR/FKM TPV can be an idea potential alternative for expensive fluorosilicone rubbers in some applications.
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页码：1701 / 1709
页数：9
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