Reinforcement of silicone rubber with raspberry‐like SiO2@Polymer composite particles
Reinforcement of silicone rubber with raspberry‐like SiO2@Polymer composite particles
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DOI：
10.1002/pi.4900
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发表时间：
2015-08
影响因子：
3.2
通讯作者：
Zhang Xinping;Yinyan Guan;Z. Yunfeng;Zhijie Zhang;D. Qiu
中科院分区：
文献类型：
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作者：
Zhang Xinping;Yinyan Guan;Z. Yunfeng;Zhijie Zhang;D. Qiu
Raspberry-like SiO2@Polymer composite particles, prepared by one-pot Pickering emulsion polymerization in aqueous medium, were used to reinforce silicone rubber. Bearing both polymer moieties and Si-OH groups on the surface, these raspberry-like particles were better dispersed in the silicone rubber matrix; therefore the mechanical performance of the resultant particle - silicone rubber composites was significantly enhanced. With 25 phr SiO2@Polymer composite particles, the tensile strength, elongation at break and hardness were 2.02 MPa, 129% and 38, respectively. Further increasing the filler amount resulted in decrease of the tensile strength and modulus. In the meantime, although there was a large fraction of polymeric phase in the composite particles, the thermal stability of the resultant particle - silicone rubber composites was not significantly reduced, especially for particle loading exceeding 10 phr. These raspberry-like SiO2@Polymer composite particles are easily produced on a large scale in an environmentally friendly and cost-effective way; thus these are promising novel fillers to reinforce silicone rubber. (c) 2015 Society of Chemical Industry
