Study on Friction and Wear Properties of Fiber⁃Reinforced Monomer⁃Casting Polyamide 6 Composites Under Different Wearing Conditions

doi:10.19491/j.issn.1001-9278.2020.07.003

Abstract

Abstract:

Monomer?casting polyamide 6 (MCPA), the glass fiber?reinforced MCPA (GMCPA) at a fiber content of 30 wt% and the carbon fiber?reinforced MCPA (CFMCPA) at a fiber content of 35 vol% were prepared, and their friction and wear properties were investigated under the four wearing conditions of dry friction, clean water, dry sand and water sand. The results indicated that the friction coefficient of samples presented a decrease trend by the order of CFMCPA < GFMCPA < MCPA under the conditions of dry friction and clean water and by the order of MCPA < CFMCPA < GFMCPA under the conditions of dry sand and water sand. For the same sample under different conditions, its friction coefficient exhibits a drop by the order of clean water < water sand < dry friction < dry sand, and its shows an increase trend by the order of dry friction < clean water < water sand < dry sand. However, for the different samples under the same condition, their volumetric wear rates decrease by the order of GFMCPA < CFMCPA < MCPA. The experimental results demonstrated that the friction and wear properties of these three samples had their own characteristics under the four wearing conditions, and they could be used according to the specific requirement for their performance.

Key words: glass fiber, carbon fiber, monomer cast polyamide, composite, friction?wear property

CLC Number:

TQ 323.6

Baolei CHEN, Tifeng JIA, Zhongshang ZHOU, Tiekun GUO. Study on Friction and Wear Properties of Fiber⁃Reinforced Monomer⁃Casting Polyamide 6 Composites Under Different Wearing Conditions[J]. China Plastics, 2020, 34(7): 14-20.

Figures/Tables 8

Fig.1. The curve of material friction coefficient changing with time under different friction conditions

Fig.2. The curve of friction coefficient with time for different materials under four friction conditions

Fig. 3. Volumetric wear rate of different materials under four frictional conditions

Fig. 4. Volumetric wear of the three materials under different frictional conditions

Fig. 5. The surface morphology of the materials under dry friction conditions

Fig. 6. The surface morphology of a material under dry sand conditions

Fig. 7. The surface morphology of materials under clear water

Fig. 8. The surface morphology of the material under the condition of water sand

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