摘要
通过以氯化丁基橡胶(CIIR)与聚丙烯酸酯(PMAc)制备互贯聚合物网络(IPNs),实现了将CIIR阻尼功能区向高温区的拓展. DMA测试结果表明,第1网络CIIR的交联剂用量,第2网络聚丙烯酸酯(PMAc)的类型和比率、交联剂种类及用量对阻尼性能有较大影响. 当m(CIIR)∶m(PBMA)为(80～60)∶m(20～40)时,CIIR/PBMA IPNs可形成阻尼平台区(10 Hz下,tanδmax≥0.65,tanδ＞0.3的有效阻尼功能区可从-50 ℃持续至60 ℃);同时CIIR/PEA IPNs具有较高的阻尼值(tanδmax≥1.24);样品的TEM形貌分析表明,CIIR/PMAc IPNs的相畴尺寸在100～200 nm之间,2组分之间具有较好的相容性.
The damping functional zone of chlorinated butyl rubber(CIIR) was successfully extended to (higher) (temperature) zone by means of forming interpenetration networks(IPNs) where poly(meth)acrylate was (employed) as the second network. The results from DMA show that in the IPNs, the content of crosslinking (agent) in the first network of CIIR, the ratio between the two components, the type of (meth)acrylate (composing) the second network as well as the type and content of the crosslinking agent in the second network all have significant influence on the damping properties of the IPN. When m(CIIR)∶m(PMAc) was (80~60)∶(20~40), at 10 Hz, CIIR/PEA IPNs exhibited a high damping value with tanδ_(max)≥1.24, while CIIR/PBMA IPNs exhibited a wide damping zone of -45 ℃ to +57 ℃(tanδ≥0.3 ), and a tanδ_(max) of 0.65. The (morphologies) and structures of the IPNs were characterized by means of TEM, and it was found that the CIIR/PBMA IPNs had smaller phase domain size of 100~320 nm, and exhibited a good compatibility between its components.
出处
《应用化学》
CAS
CSCD
北大核心
2005年第4期382-386,共5页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金资助项目(10276025)
