Effects of basalt fiber and steel fiber contents on properties of resin⁃based friction materials

doi:10.19491/j.issn.1001-9278.2022.03.006

Abstract

Abstract:

Friction materials were prepared using phenolic resin， nitrile rubber， barite， basalt fiber， and steel fiber as raw materials， and the effects of basalt fiber and steel fiber contents on their mechanical， friction， and wear properties were investigated. The results indicated that when the basalt fiber content varied from 10 to 25 wt%， the impact strength of the friction materials increased but their compression strength decreased with a decrease in the content of basalt fiber. An optimal coupling effect between the two reinforced fibers was obtained at a total fiber mass frication of 30 wt% and a mass ratio of basalt fiber to steel fiber of 1∶1. The friction coefficient of the friction materials was between 0.361 and 0.377， and their wear loss was 0.132 cm³/MJ. The wear test results indicated that the adhesive wear and fatigue wear were the major wear of the resin?based friction materials reinforced with basalt fiber and steel fiber.

Key words: basalt fiber, steel fiber, hybrid, phenolic resin, friction material, mechanical property, friction and wear behavior

CLC Number:

TQ323.1

LIU Lang, LUAN Daocheng, HU Zhihua, WEN Kelin, ZHOU Xinyu, MI Shuheng, WANG Zhengyun. Effects of basalt fiber and steel fiber contents on properties of resin⁃based friction materials[J]. China Plastics, 2022, 36(3): 33-39.

Figures/Tables 10

样品名称	酚醛树脂/%	丁腈橡胶/%	钢纤维/ %	玄武岩纤维/%	填料/ %
M1	15	10	5	25	45
M2	15	10	10	20	45
M3	15	10	15	15	45
M4	15	10	20	10	45
M5	15	10	25	5	45

Tab.1. Friction material formulation

Fig.1. Hardness of different samples

Fig.2. Impact strength of different samples

Fig.3. SEM images of brittle fracture surfaces of M1 and M3 samples

Fig.4. Compressive strength of different samples

Fig.5. Average friction coefficient of the samples at different initial braking speeds

Fig.6. Abrasion quantity of different samples

Fig.7. SEM of worn surface of sample M3

区域	C/%	O/%	Mg/%	Al/%	Si/%	Ca/%
区域1	62.84	20.92	—	1.76	7.21	7.27
区域2	—	44.51	7.48	7.28	24.02	16.72
区域3	43.90	—	6.72	7.51	24.33	17.55
区域4	—	50.96	8.31	7.07	20.65	13.01

Tab.2. Element composition and element content of the surface of sample M3 after being worn

Fig.8. Energy spectrum analysis of wear surface of sample M3

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