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通过不同丙烯腈含量的丁腈橡胶自然贮存老化试验数据线性回归计算,分析了同种胶料分别在沈阳和广洲的自然老化速度和老化寿命。结果表明,丁腈橡胶-18在广州的拉断伸长率老化速度是沈阳的2.07倍,广州的压缩永久变形老化速度是沈阳的1.78倍;丁腈橡胶-26在广州的拉断伸长率老化速度是沈阳的2.00倍,广州的压缩永久变形老化速度是沈阳的1.33倍;丁腈橡胶-40在广州的拉断伸长率老化速度是沈阳的4.45倍,广州的压缩永久变形老化速度是沈阳的0.91倍。
Through the linear regression calculation of natural aging test data of nitrile rubber with different acrylonitrile contents, the natural aging rate and aging life of the same rubber compound in Shenyang and Guangzhou were analyzed. The results showed that the elongation at break of NBR-18 in Guangzhou was 2.07 times that of Shenyang and the compression set of Guangzhou was 1.78 times of that of Shenyang. The elongation at break of NBR-26 in Guangzhou The aging rate is 2.00 times that of Shenyang, Guangzhou compression aging deformation rate is 1.33 times that of Shenyang; NBR-40 in Guangzhou tensile elongation rate of aging is 4.45 times in Shenyang, Guangzhou compression set deformation rate is 0.91 times of Shenyang.