%0 Journal Article
%T 发泡剂H的活化机理及其对天然橡胶发泡的影响
%A 周洋
%A 姜述芹
%A 彭宗林
%J -
%D 2012
%X 研究发泡剂H与尿素的相互作用机理以及两者并用对天然橡胶（NR）硫化和发泡的影响。结果表明：发泡剂H与尿素并用时的分解历程与它们各自单用时不同，两者反应温度在130～180 ℃之间，峰值温度约为150 ℃；发泡剂H/尿素并用比在等当量或尿素稍过量时效果最佳，两者对NR的硫化都有明显的促进作用；尿素的分散性对发泡体的泡孔均匀性影响显著。;The mechanism of the interaction between blowing agent H and urea，and their effects on the vulcanization and foaming property of NR were investigated.The results showed that，the decomposition course of blowing agent H/urea blend was different from their own decomposition reactions.The reaction temperature range was from 130 ℃ to 180 ℃，and the decomposition peak temperature was about 150 ℃.With equivalent blending ratio or with slightly higher urea level，the foaming effect was the best，and both blowing agent H and urea had significant accelerating effects on the vulcanization of NR.The dispersion of urea had significant effect on the pore uniformity of NR foam
%K [发泡剂
%K 尿素
%K 天然橡胶
%K 分解特性
%K 发泡性能
%K 发泡剂
%K 尿素
%K 天然橡胶
%K 分解特性
%K 发泡性能
%K blowing agent
%K urea
%K NR
%K decomposition characteristics
%K foaming property]
%U http://www.rubbertire.cn/gy/xjgy/ch/reader/view_abstract.aspx?file_no=XJ20120704&flag=1