CAJ | 학술논문

在受到周期应力的作用下,丁腈橡胶内已存在的裂纹会不断扩展而最终橡胶断裂。本文考察了碳黑种类及用量对丁腈橡胶疲劳过程中预制裂纹扩展情况的影响并对断面形貌进行了观察。结果表明,在N220、N330和N550三种碳黑中,N220碳黑补强的丁腈橡胶抑制裂纹增长的性能最好；采用N330补强填料时,碳黑含量为20和30份时效果均较好。
재수도주기응력적작용하,정정상효내이존재적렬문회불단확전이최종상효단렬。본문고찰료탄흑충류급용량대정정상효피로과정중예제렬문확전정황적영향병대단면형모진행료관찰。결과표명,재N220、N330화N550삼충탄흑중,N220탄흑보강적정정상효억제렬문증장적성능최호；채용N330보강전료시,탄흑함량위20화30빈시효과균교호。
Under conduction of cyclic stress,the cracks in NBR will continue to develop until rubber breaks. In this paper,the effect of kinds and dosage of carbon black on crack development of NBR rubber was investigated and the fraction surfaces were observed using SEM. The results showed that the carbon black of N220 had the best effect on depression to crack development in N220,N330 and N550. If the carbon black of N330 is used,the best dosage is 20 or 30 phr.