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本文叙述了在主链中含有环二硅氨烷的线型聚硅氧烷的合成,所得到的聚合体无论在聚合或贮存时都不会发生交联,这个结果完全不同于文献曾经报导的类似结构的聚合体的实验结果。 由聚合体 (?)得到的橡皮具有很好的力学性能和好的水解稳定性,其耐热性接近于卡硼烷硅橡胶。在350℃的热空气下老化24小时,仍能保持伸长率100％和抗拉强度80公斤/厘米~2。
This paper describes the synthesis of linear polysilazanes containing cyclodisilazane in the main chain. The resulting polymers do not cross-link either during polymerization or storage. This result is quite different from what was reported in the literature Experimental results for polymers of similar structure. The rubber obtained from polymer (?) Has good mechanical properties and good hydrolytic stability, and its heat resistance is close to carborane silicone rubber. Aging in hot air at 350 ° C for 24 hours still retains 100% elongation and tensile strength of 80 kg / cm ~ 2.