CAJ | 학술논문

采用机械共混法制备丁腈橡胶（NBR）/马来酸酐接枝液体聚丁二烯（MA-LB）并用胶，研究MA-LB对NBR性能的影响。结果表明：随着MA-LB用量增大，胶料的焦烧性能改善，硫化时间延长；低丙烯腈含量NBR胶料硬度和拉断永久变形不变，拉断伸长率逐渐增大，拉伸强度先增大后减小（在MA-LB用量为10份时拉伸强度最大），耐低温性能大幅提高；高丙烯腈含量的NBR胶料硬度变化不大，拉伸强度减小，拉断伸长率和拉断永久变形逐渐增大。MA-LB用量为10份时胶料的高低温压缩回弹性能和耐油性能良好，综合性能较佳。
채용궤계공혼법제비정정상효（NBR）/마래산항접지액체취정이희（MA-LB）병용효，연구MA-LB대NBR성능적영향。결과표명：수착MA-LB용량증대，효료적초소성능개선，류화시간연장；저병희정함량NBR효료경도화랍단영구변형불변，랍단신장솔축점증대，랍신강도선증대후감소（재MA-LB용량위10빈시랍신강도최대），내저온성능대폭제고；고병희정함량적NBR효료경도변화불대，랍신강도감소，랍단신장솔화랍단영구변형축점증대。MA-LB용량위10빈시효료적고저온압축회탄성능화내유성능량호，종합성능교가。
In this study, the blends of NBR/maleic anhydride-grafted liquid polybutadiene (MA-LB) were prepared by mechanical blending, and the inlfuence of the MA-LB on the properties of the blends was investigated. It was found that when the amount of MA-LB in the blends increased, the scorch property of the compound was improved and the curing time was extended. For the NBR with low acrylonitrile content, when MA-LB amount increased, the hardness and permanent tensile set of the vulcanizates changed little, the elongation at break increased, the tensile strength increased, but reached maximum value when MA-LB amount was 10 phr, and then decreased. For the NBR with high acrylonitrile content, when MA-LB amount increased, the hardness didn’t change, the tensile strength decreased, and the elongation at break and permanent tensile set increased gradually. The experimental results showed that when the MA-LB amount was 10 phr, high and low temperature compression resilience and the oil resistance of the blends were excellent, and overall performance was good.