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程先华, CHENG Xian-hua, XUE Yu-jun
JOURNAL OF RARE EARTHS, 2001, 3 (19): 238-240,-0001,():
-1年11月30日
The friction and wear properties of metal-plastic multilayer composites filled with glass fiber, which is treated with rare earth element surface modifier, under impact load and dry friction conditions were investigated. Experimental results show that the metal-plastic multilayer composite filled with glass fiber exhibits excellent friction and impact wear properties when using rare earth elements as surface modifier for the surface treatment of glass fiber.
rare earths, metal-plastic multilayer composites, friction properties, impact wear properties
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程先华, J.WU, X.CHENG∗
,-0001,():
-1年11月30日
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程先华, Xue Yujun, Cheng Xianhua
JOURNAL OF RARE EARTHS, Vol. 21, No.3, Jun. 2003,-0001,():
-1年11月30日
e measured. The fracture surface morphologies were observed and analyzed by SEM. The results indicate that rare earth elements can effectively promote the interfacial adhesion between the glass fiber and PTFE, owing to the effects of rare earth elements on the compatibility. The tensile properties of GFPPTFE composites can be improved considerably when the content of RE in surface modifier is 0.2 %~014%, and the optimum performance of GFPPTFE composites is obtained at 0.3 %RE content.
GFPPTFE composites, tensile properties, rare earths
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程先华, J. Wu and X. H. Cheng
,-0001,():
-1年11月30日
Solutions of a rare-earth modifier (RES) and the epoxy chloropropane (ECP) grafting modification method are used for the surface treatment of F-12 aramid fibers. The effects of RES concentration on the interlaminar shear strength (ILSS) of F-12 aramid fiber/epoxy composites are investigated in detail, and the fracture surfaces of ILSS specimens are analyzed by SEM. It is shown that the RES surface treatment is superior to the ECP grafting treatment in promoting the interfacial adhesion between aramid fibers and the epoxy matrix. However, the tensile strength of single fibers is almost unaffected by the RES treatment. The optimum ILSS is obtained at a 0.5 wt.% content of rare-earth elements.
aramid fibers,, modification,, rare earths,, composites,, interlaminar shear strength
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程先华, Xianhua Chenga, *, Yujun Xuea, Chaoying Xieb
Materials Letters 57(2003)2553-2557,-0001,():
-1年11月30日
Polytetrafluoroethylene (PTFE) composites were prepared using 60 wt.% Pb and 5 wt.% glass fiber (GF). The surface of GF was modified with a coupling agent, a mixture of coupling agent and rare earths, and rare earths, respectively. The friction and wear properties of the PTFE composites, sliding against 45# carbon steel (AISI 1045 steel) under oil lubrication, were investigated on a pin-on-disc sliding wear machine. It was found that modified GF, which was filled into PTFE, decreased the wear of the PTFE composites compared with that of the PTFE composite filled with unmodified GF. The friction and wear properties of PTFE composite filled with Pb and rare earths-modified GF were greatly enhanced, owing to the effective improvement of the interfacial adhesion between the GF and PTFE.
Polytetrafluoroethylene, Composites, Lead, Glass fiber, Rare earths, Friction and wear properties
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