Shanghai Daoqin Plastics Co., Ltd.

  usually heat resistant plastics selection 原则: 

        1.考虑 heat resistant property high low  

        a. meet/satisfy heat resistant property can,不 need selection high,太 high formed cost improve/increase;  

        b.尽 can can selection general purpose plastics modified. heat resistant type plastics large belongs to specialty plastics type, its price very high;而 general purpose type plastics price comparison low;  

        c.尽 can can selection heat resistant modified degree large general purpose plastics.  

        2.考虑 heat resistant ring factors  

        a.瞬时 heat resistant property and long heat resistant property; 

        b. dry heat resistant or wet heat resistant; 

        c. resistant 介质腐蚀 property; 

        d. has oxygen heat resistant or oxygen heat resistant; 

        e. has heat resistant and heat resistant.

        large 家一定 for upper temperature degree 觉 奇怪, how PA PBT material heat deflection temperature (HDT) that low 呢?

        its 实PA PBT if 不进行 heat resistant modified, its resistant thermal properties is very 差. lower specific introduction plastics heat resistant modified rear resistant thermal properties for ratio/proportion 子. 

        一. plastics filling heat resistant modified: in has filler in, remove has machine material outer, large separation machine material filler can obvious improve/increase plastics heat resistant temperature degree. commonly used heat resistant filler has: carbon acid slip powder silicon 灰石 云母 锻烧陶土 aluminum and and other. filler degree small, modified 效果越 good. 

        a. nano grade filler: 

        PA6 filling 5％ nano 蒙脱土, its heat deflection temperature (HDT) can 由70 degree improve/increase to 150 degree  

        PA6 filling 10％ nano 海泡石, its heat deflection temperature (HDT) can 由70 degree improve/increase to 160 degree  

        PA6 filling 5％ combined formed 云母, its heat deflection temperature (HDT) can 由70 degree improve/increase to 145 degree  

        b.常规 filler: 

        PBT filling 30％ slip powder, its heat deflection temperature (HDT) can 由55 degree improve/increase to 150 degree  

        PBT filling 30％云母, its heat deflection temperature (HDT) can 由55 degree improve/increase to 162 degree  

        二. plastics reinforcement heat resistant modified  

        use reinforcement modified methods improve/increase plastics heat resistant property ratio filling also good, commonly used heat resistant fiber main/primary has:石棉 fiber glass fiber carbon fiber must poly  

       1. crystallization type resin 经30％ glass fiber reinforcement heat resistant modified. 

        PBT heat deflection temperature (HDT) 由66 degree improve/increase to 210 degree. 

        PET heat deflection temperature (HDT) 由98 degree improve/increase to 238 degree. 

        PP heat deflection temperature (HDT) 由102 degree improve/increase to 149 degree. 

        HDPE heat deflection temperature (HDT) 由49 degree improve/increase to 127 degree. 

        PA6 heat deflection temperature (HDT) 由70 degree improve/increase to 215 degree. 

        PA66 heat deflection temperature (HDT) 由71 degree improve/increase to 255 degree. 

        POM heat deflection temperature (HDT) 由110 degree improve/increase to 163 degree. 

        PEEK heat deflection temperature (HDT) 由230 degree improve/increase to 310 degree. 

        2. non crystallization resin 经30％ glass fiber reinforcement heat resistant modified. 

        PS heat deflection temperature (HDT) 由93 degree improve/increase to 104 degree. 

        PC heat deflection temperature (HDT) 由132 degree improve/increase to 143 degree. 

        AS heat deflection temperature (HDT) 由90 degree improve/increase to 105 degree. 

        ABS heat deflection temperature (HDT) 由83 degree improve/increase to 110 degree. 

        PSF heat deflection temperature (HDT) 由174 degree improve/increase to 182 degree. 

        MPPO heat deflection temperature (HDT) 由130 degree improve/increase to 155 degree  

        三. plastics blending heat resistant modified  

        plastics blending improve/increase heat resistant property in low hot resin in mixed high heat resistant property resin from improve/increase its heat resistant property. this type of methods although heat resistant property improve/increase degree 不如添 add heat resistant modified high,但 its advantages is in improve/increase heat resistant property meanwhile basic effect/influence its has other property can.如: 

        ABS/PC heat deflection temperature (HDT) can 由93 degree improve/increase to 125 degree  

        ABS/PSF(20％) heat deflection temperature (HDT) can 达115 degree  

        HDPE/PC(20％) soft can 由124 degree improve/increase to 146 degree. 

        PP/CaCo3/EP heat deflection temperature (HDT) can 由102 degree improve/increase to 150 degree  

        四. plastics crosslinked heat resistant modified  

        plastics crosslinked improve/increase heat resistant property used for heat resistant pipe/tube and cable 方面.如: 

        1.HDPE经 silicon crosslinked rear, its heat deflection temperature (HDT) can 由原 70 degree increase to 90~110 degree. 

        2.PVC经 crosslinked rear, its heat deflection temperature (HDT) can 由原 65 degree increase to 105 degree.