丙烯酸钠制备吸水膨胀丁腈橡胶的性能

Properties of water swellable nitrile butadiene rubber with sodium acrylate by in-situ polymerization

以丁腈橡胶(NBR)为基体,加入丙烯酸钠(NaAA)和过氧化二异丙苯(DCP),通过原位聚合制得吸水膨胀橡胶(WSR),采用正交试验的方法研究各因子对吸水膨胀橡胶的力学性能与吸水性能的影响.结果表明:傅立叶红外(FTIR)表明在DCP引发作用下,NaAA在NBR橡胶中发生原位聚合.当NaAA用量增加,WSR的吸水性能与拉伸强度也随之增加;增加DCP和三烯丙基异三聚氰酸酯(TAIC)的用量,WSR的力学性能有所提高,但质量流失率有所降低.

The water swellable rubber （WSR） was prepared by adding sodium acrylate （NaAA） and dicumyl peroxide （DCP） into the nitrile butadiene rubber （NBR） matrix in situ polymerization. Effects of different factors on mechanical properties and water absorption properties of WSR were studied by orthogonal test method. The results show that NaAA is in situ polymerization by the initiation of adding DCP in the NBR rubber using Fourier Transform Infrared Spectrometer （FTIR） analysis; the water absorption and the tensile strength of WSR increase with increasing of the amount of NaAA; mechanical properties of WSR increase slightly, but the quality losing rate decreases with increasing the amount of DCP and triallyl isocyanurate （TALC）.