文献类型：期刊文章

作　　者：于杰[1] 金志浩[1] 雷华[1] 刘一春[1] 罗筑[1]

机构地区：[1]贵州工业大学材料中心,贵阳550003

出　　处：《高分子学报》

基　　金：贵州省科学基金

年　　份：1999

卷　　号：9

期　　号：5

起止页码：612-615

语　　种：中文

收录情况：AJ、BDHX、BDHX1996、CAS、CSCD、CSCD2011_2012、IC、JST、PL、RCCSE、SCIE、SCOPUS、WOS、ZGKJHX、核心刊

摘　　要：The quantitative relation between notched impact strength and fractured surfaceroughness of polymer materials at different testing temperature was investigated withdifferent polymer. The resultsshow thatthe notched impactstrength σiof polymer materialsincreasedlinearly with theincrease offractured surface roughness parameter R Sin the case ofbrittle fracture atlowertesting temperature . Butthe variation ofimpact strength depends onboth R Sand the plastic deformation area in the case of ductile fracture at higher testingtemperature. The relation between σiand R Sat higher testing temperature could be dividedinto three models according to different polymer materials and their fracture mechanism .

关 键 词：聚合物  冲击  断面粗糙度  缺口冲击强度 RS

分 类 号：O631.21]