摘要
Silicone rubber/polyacrylate sequential interpenetrating polymer networks(IPNs) were prepared by silicone rubber sheet dipped into the solution composed of different acrylate monomers and benzoyl peroxides(BPOs) for different time at room temperature and then acrylate polymerized at 80℃for 2 h. The molecular structure and damping properties of sequential IPNs were studied by means of FT-IR and dynamic mechanical analysis(DMA), respectively. The FT-IR spectrum shows that polyacrylate distributes unevenly along the thickness direction of IPNs, i.e. the concentration of polyacrylate decreases from the midst to the surface of the IPNs. The DMA shows that cold crystallization of silicone in the temperature range from -47℃to -30℃is reduced and loss factor of IPNs is improved after interpenetrating with polyacrylate. This suggestes that IPNs can be used as damping materials.
Silicone rubber/polyacrylate sequential interpenetrating polymer networks（IPNs） were prepared by silicone rubber sheet dipped into the solution composed of different acrylate monomers and benzoyl peroxides（BPOs） for different time at room temperature and then acrylate polymerized at 80 ℃ for 2 h. The molecular structure and damping properties of sequential IPNs were studied by means of FT-IR and dynamic mechanical analysis（DMA）, respectively. The FT-IR spectrum shows that polyacrylate distributes unevenly along the thickness direction of IPNs, i.e. the concentration of polyacrylate decreases from the midst to the surface of the IPNs. The DMA shows that cold crystallization of silicone in the temperature range from -47 ℃ to -30 ℃ is reduced and loss factor of IPNs is improved after interpenetrating with polyacrylate. This suggestes that IPNs can be used as damping materials.
出处
《中国有色金属学会会刊：英文版》
CSCD
2006年第B02期517-520,共4页
Transactions of Nonferrous Metals Society of China
基金
Project (50473013) supported by the National Natural Science Foundation of China
关键词
硅橡胶/聚丙烯酸酯
顺序互穿网络
阻尼性质
减振作用
silicone rubber
polyacrylate
sequential interpenetrating networks
damping properties
