燃油软储罐用橡胶织物*

Y. N. Rybakov, A. Dedov, D. S. Plokhoi, D. V. Kolotilin
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引用次数: 0

摘要

研究了SKN-26M和SKN-40M共混丁腈橡胶织物中不同等级车用燃料对癸二酸二丁酯的萃取动力学。动力学根据GOST 9.030-74标准从样品在50°C燃料中保存和干燥后的重量变化来确定。根据GOST 1567-97 (ISO 6246-95)记录燃料中存在的胶质含量的变化,并根据GOST 5985-79记录燃料与橡胶织物接触前后的酸度变化。结果表明,萃取过程分两个阶段进行,在实验条件下,第一个阶段的时间与燃料类型无关。第一阶段的速率远高于第二阶段的速率。第一级和第二级提取燃料的速率和比例的关系取决于燃料的类型。可以断言,萃取物的剩余量是由杂质组成的,其中包括残留的单体或其衍生物以及合成橡胶所用的物质。在考虑体系内扩散过程的基础上,提出了萃取剂逆流进入硫化胶的萃取机理及其与汽油品位的关系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Rubberised fabric for fuel soft storage tanks*
The kinetics of extraction of dibutyl sebacinate by different grades of motor fuel from rubberised fabric based on a blend of nitrile rubbers SKN-26M and SKN-40M was investigated. The kinetics was determined according to the GOST 9.030-74 standard from the change in weight of the specimen after holding in fuel at 50°C and drying. The change in quality of the fuel after contact with the fabric was recorded from the change in the content of existent gum in fuel according to GOST 1567-97 (ISO 6246-95) and its acidity according to GOST 5985-79 before and after contact with the rubberised fabric. It was shown that the process of extraction proceeds in two stages, the time of the first of which under experimental conditions is not dependent on the type of fuel. The rate of the first stage is much higher than the rate of the second stage. The relation of rates and proportion of extracted fuel at the first and second stages depends on the type of fuel. It can be asserted that the surplus amount of extracted substances is made up of impurities, which include residual monomer or its derivatives and substances used in the synthesis of the rubber. The mechanism of extraction with extractant counterflow into the vulcanisate and its dependence on the grade of petrol is proposed, based on allowance for the diffusion processes in the system.
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