CAJ | 학술논문

将丁腈橡胶(NBR)和氯丁橡胶(CR)按不同质量分数共混并硫化,研究了硫化橡胶在自然环境、热空气老化、热油老化等条件下的物理性能,并测定了硫化橡胶与镀铜钢丝的粘合性能.结果表明,随着 CR 质量分数的增大,混炼胶的焦烧时间逐渐缩短.经热空气老化后,NBR 的硬度增加幅度比 CR 的硬度增加幅度大,拉断强度降低幅度则比 CR 的小得多.此外,NBR 的耐油性能优于 CR.就物理性能以及与镀铜钢丝的粘合性能而言,单一 NBR 和单一 CR 优于共混 NBR/CR.
장정정상효(NBR)화록정상효(CR)안불동질량분수공혼병류화,연구료류화상효재자연배경、열공기노화、열유노화등조건하적물이성능,병측정료류화상효여도동강사적점합성능.결과표명,수착 CR 질량분수적증대,혼련효적초소시간축점축단.경열공기노화후,NBR 적경도증가폭도비 CR 적경도증가폭도대,랍단강도강저폭도칙비 CR 적소득다.차외,NBR 적내유성능우우 CR.취물이성능이급여도동강사적점합성능이언,단일 NBR 화단일 CR 우우공혼 NBR/CR.
Nitrile-butadiene rubber (NBR)and chloroprene rubber (CR)were blended at differ-ent mass fractions and vulcanized,followed by aging at various conditions.The physical prop-erties of the vulcanized rubbers aged at ambient condition as well as in hot air and hot oil were determined,and their adhesion to Cu-coated steel wires was measured as well.Results indicate that,with the increase of the mass fraction of CR,the scorch time of the gross rubber tends to decline gradually.After being aged in hot air,the hardness of vulcanized NBR tends to rise more noticeably than that of vulcanized CR,while the tensile strength of the vulcanized NBR reduces at a much less extent than that of the vulcanized CR.Moreover,vulcanized NBR exhib-its better resistance against oil than vulcanized CR,while mono NBR and mono CR are advan-tageous over blended NBR/CR in terms of the physical properties and adhesion to Cu-coated steel wire.