稀土丁异戊橡胶改性天然橡胶的应用研究
Special Purpose Rubber Products(2006)
Abstract
采用稀土丁异戊橡胶代替顺丁橡胶,测试并分析了改性天然橡胶的低温性能及相关性能。结果表明,稀土丁异戊橡胶改性的天然橡胶室温力学性能和粘接性能与顺丁橡胶改性的天然橡胶相近,但低温性能有较大的改善。在-40℃下贮存2h后,顺丁橡胶改性天然橡胶硫化胶有明显的结晶现象,其剪切模量较室温下的相应值增加了6倍,而稀土丁异戊橡胶改性的天然橡胶硫化胶保持了良好的弹性,其剪切模量值与室温下的相当。
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Key words
shear modulus,low temperature property,butadiene-isoprene rubber synthesized with rare earth catalyst
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