聚氨酯增韧改性环氧树脂粘接SiC颗粒耐磨涂层的耐冲蚀性能
Erosive Wear Resistance of Epoxy Resin/SiC Wear Resistant Coating Modified by Polyurethane
摘 要
通过改变增韧剂聚氨酯(PU)的加入量,研究了聚氨酯改性环氧树脂粘接SiC颗粒耐磨涂层的粘接强度和耐冲蚀磨损性能.结果表明:加入适量的PU可有效改善环氧树脂胶体的粘接性能,PU加入量(质量分数)为15%时,改性环氧树脂粘接SiC颗粒耐磨涂层的粘接强度最高;涂层的耐冲蚀性能则随冲蚀角度的不同而变化,在大角度冲蚀时,PU加入量30%~35%的耐冲蚀性能最好,而小角度冲蚀时,PU加入量5%~15%的耐冲蚀性能最好;无论大角度还是小角度其耐冲蚀磨损性能都好于相同试验条件下白口铸铁的耐冲蚀性能.
环氧树脂
SiC颗粒
粘接强度
冲蚀
polyurethane
epoxy resin
SiC particle
bonding strength
erosion
Abstract
The adhesive strength and erosive wear resistance of SiC particles wear resistant coating bonded by polyurethane modified epoxy resin were studied by changing additive content of toughening agent polyurethane (PU).The results show that proper addition of PU could improve the bond behavior of epoxy resin.When PU addition was 15wt%,the bonding strength of SiC wear resistant coating bonded by modified epoxy resin was the highest.The erosion wear properties would be changed as the impact angle changed.The best erosion wear resistance would be obtained at large impact angle when the PU content was 30wt%-35wt%,and at small impact angle when the PU content was 5wt%-15wt%.The erosion wear property of SiC wear resistant coating bonded by modified epoxy resin was better than the white iron under the same impact condition at both small and large impact angles.
中图分类号 TG146.1
所属栏目 材料性能及其应用
基金项目 陕西省重点学科建设专项经费资助项目
收稿日期 2009/1/13
修改稿日期 2009/9/5
网络出版日期
作者单位点击查看
备注邢志国(1979-),男,吉林通化人,博士研究生.
引用该论文: XING Zhi-guo,Lv Zhen-lin,CUI Yong. Erosive Wear Resistance of Epoxy Resin/SiC Wear Resistant Coating Modified by Polyurethane[J]. Materials for mechancial engineering, 2010, 34(1): 84～87
邢志国,吕振林,崔永. 聚氨酯增韧改性环氧树脂粘接SiC颗粒耐磨涂层的耐冲蚀性能[J]. 机械工程材料, 2010, 34(1): 84～87
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【4】马海波,卿宁.聚氦酯互穿网络结构聚合物侧研究进展及应用[J].皮革化学,2003,21(3):4-9.
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【6】ARGARWALV K,MILLS D,MASON J S.A comparison of the erosion wear of steel and rubber in pneumatic conveying system pipelines[C]//Proc 6th Int Conf on Erosion by Liquid and Solid Impact.Cambridge:Cavendish Laboratory,2003.
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【8】徐化兵.金属基环氧/聚氨酯梯度耐磨涂层的制备及性能研究[D].长沙:湖南大学,2005.
【9】WATSON J D,MUTTON D J.Metalographic observations of abrasive wear mechanisms[J].Aust Inst Met,1976,21(4):255-271.
【10】崔佳,曲敏杰,刘伟,等.聚氨酯改性环氧树脂的研究[J].工程塑料应用,2009,37(2):24-27.
【11】呈军,毕曙光,陈雷,等.聚氨酯改性环氧树脂的研究[J].热固性树脂,2009,24(3):25-28.
【12】黄先威,刘竞超,万金涛,等.刚性聚氨酯增韧改性环氧树脂的研究[J].工程塑料应用,2005,33(2):19-22.
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【14】周永欣.SiC颗粒增强钢基表面复合材料的制备及冲蚀磨损性能研究[D].西安:西安建筑科技大学,2007.
【15】FINNIE I.Some reflections on the past and furture of erosion[J].Wear,1995,186/187:1-10.
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