摘要
为改善丁腈橡胶(NBR)螺杆泵定子衬套的耐磨性能,采用氟橡胶(FKM)与其混炼制备FKM/NBR混炼胶,并在MPV-600型磨粒磨损试验机上研究相同硬度的氟橡胶和丁腈橡胶及其配比为5∶5、2∶8的混炼胶试样在干摩擦条件下的磨损行为,利用体式显微镜观察4种橡胶试样的磨损形貌并分析其磨损机制。结果表明:摩擦热引起的温升导致橡胶硬度降低是干摩擦条件下橡胶磨损的主要原因,混炼胶的耐热性能较好,其耐磨性能也较好,其中FKM/NBR配比为2∶8的混炼胶的耐热性能和耐磨性能最好;干摩擦条件下氟橡胶和丁腈橡胶的磨损机制以磨粒磨损和黏着磨损为主,而混炼胶以磨粒磨损为主。
To improve the wear resistance of the nitrile butadiene rubber （NBR） bushing of progressing cavity pump stator, FKM/NBR blend rubbers were prepared with FKM and NBR by using blends technology. The wear behaviors of FKM and NBR and their blends （5：5 and 2： 8） with the same hardness were investigated in the MPV-600 type abrasive wear tester under dry friction condition. The wear morphology of the rubber was observed using the stereo microscope in or- der to analyze the wear mechanism. The resuhs show that the rubber hardness decreases because of the temperature rise caused by frictional heat is the main reason that resuhs in the wear of rubber under dry friction. The blend rubbers has good wear resistance for their good heat resistance, and the blend rubber with the ratio of 2：8 of FKM and NBR has the best heat resistance and wear resistance. The wear mechanism of FKM and NBR is abrasive wear and adhesive wear, and the wear mechanism of blend rubbers is the abrasive wear under dry friction.
出处
《润滑与密封》
CAS
CSCD
北大核心
2013年第12期32-35,41,共5页
Lubrication Engineering
基金
国家自然科学基金项目(50875178)
