Cross-linkedPVCfoamplasticwaspreparedbyboilingfoamingmethod.InfluenceofPVC
pasteresinonproductsobtainedfrompastingprocess,moldingprocess,foamingprocessandcompression
propertyoffoam wasstudied.Theresultsshowthatappropriatepasteviscosityis4to9Pa·s.K-valueof
PVCpasteresinislargerorbeingalkalineofPVCpasteresincanpreventPVCdegradationin molding
process.BeingalkalineofPVCpasteresincanacceleratefoamingreaction,willbenefittoobtainlowdensity
foamandreducefoamingtime.WithK-valueofPVCpasteresinincreasing,compressionpropertyoffoamincreased.
WhenK-valueisextremelybig,cellularsizeoffoam becomebiggerandcompressionstrengthreduce,
appropriateK-valueis70to80.