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衡量塑料制品耐热性能好坏的指标有热变形温度 马丁耐热温度和维卡软化点三种,其中以热变形温度最为常用.
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4 |( Y/ y4 N2 o# a2 q 常用塑料的耐热性能(未经改性的)
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% F5 {1 Y1 i: w2 y8 X$ B) T 热变形温度----------维卡软化点 ------------马丁耐热
4 k# [3 G* W( @3 y2 DHDPE -----------------80-------------------------120 ------------------------\\
4 e- k% K8 c' j1 P( TLDPE-------------------50--------------------------95--------------------------\\
* Q7 `5 b$ A. X* Y9 s5 yEVA---------------------\\---------------------------- 64-------------------------\\ 5 d7 ~" b ^) K; Y" V8 p! E4 F
PP........................102........................110........................\\
8 S6 y8 U+ y7 {2 }& Z, tPS........................85............................105..................... \\ ( K1 q( S/ V) y: I
PMMA...................100..........................120...................... \\
* N4 @ M' C3 g j$ }0 aPTFE.....................260..........................110.......................\\
1 c4 }; T1 Z. g3 T9 ]ABS.......................86...........................160......................75 8 h) B9 e ~2 }0 ?6 {7 [! i/ w1 F
PSF.......................185..........................180.....................150
. P4 D. O1 m& O% F7 PPOM.......................98............................141.....................55 , S/ q. Z- [+ ~3 u1 ]9 E/ Y3 r
PC.........................134.............................153...................112
) ^4 m# D9 k6 ]/ P5 M& O( C. t7 IPA6.......................58..............................180....................48
7 n# G5 V6 L* l2 DPA66......................60..............................217................... 50
N# C% J) S- |$ B* |PA1010..................55..............................159.....................44 ) R/ d7 P. B* l8 l
PET........................70..............................\\........................80 7 U2 Y* p& ]0 W7 i
PBT........................66..............................177....................49 9 u' r( U- V1 i) p1 d$ \+ i2 w
PPS........................240.............................\\........................102
4 m D8 I: ^% e$ W. Q- V" RPPO.......................172..............................\\........................110
# T3 J* c& r; h' P" w2 FPI...........................360........................... 300..................... \\ 6 A, K6 v4 N/ s* g2 \1 c
LCP........................315..............................\\ .........................\\ $ l' f5 i9 j/ Q
$ K B8 Z5 o4 |附件中是常用塑料的性能和选用要求. |
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