Abstract

The correlation between the rate of ozone destruction of vulcanizates of statistical and block nitrile-butadiene rubbers (NBRs) with the proportion of free volume in the defects of the structure and the total free volume of copolymers is established. It is shown that the rate of ozone destruction of vulcanizates is determined by the absorption capacity of the copolymers. The amount of ozone absorbed depends on the content and distribution of acrylonitrile units and the isomerism of the butadiene component. Statistical copolymers are characterized by a higher sorption capacity in relation to ozone and low ozone resistance in comparison with the block copolymers.

中文翻译：

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硫化胶的统计和嵌段丁腈橡胶的自由体积和臭氧降解率

摘要

建立统计和嵌段丁腈橡胶（NBR）的硫化橡胶的臭氧破坏速率与结构缺陷中自由体积的比例与共聚物总自由体积之间的相关性。结果表明，硫化胶的臭氧破坏速率取决于共聚物的吸收能力。吸收的臭氧量取决于丙烯腈单元的含量和分布以及丁二烯组分的异构性。统计共聚物的特点是与嵌段共聚物相比，相对于臭氧具有更高的吸附容量和较低的耐臭氧性。