???????????
                                                                      GB 9645?88 ISO 2508-1981
                           ??????PVC-U??????????

???????????ISO 2508-1981???????PVC-U???????????????
1 ?????????
????????????PVC-U????????????
????????????????
2 ??
???????????????????????24h???????????????????????
3 ??
3.1 ?????0.1mg?
3.2 ????
3.3 ???:?????????????
3.4 ????????????
3.5 ??
????????0.05mm?
??????0.5mm?
4 ??
4.1 ????
4.2 ????98%?100%?
5 ??
5.1 ?????????32mm??????????????50cm2???????
5.2 ??????32mm???,???50mm??????50mm??????
5.3 ???????????????????????????????
5.4 ????????
6 ????
6.1 ????????????????0.5 mm????????0.1mm?
??????????????????????????
6.2 ????23±2???????1min????????????1h?
????????????????23±2?????2h?
???????????0.1mg?
7 ????
7.1 ??????????????????g/m2??.
 
??:a?????????g/m2?
m0?????????????g?
m1?????????????g?
A??????????m2?
7.2 ??????????????????
8 ????
????????????
a. ???????
b. ??????????
c. ?????
d. ??????????????
e. ??????????????????????????????
f. ???????????????????????????????

???????????1988-07-08?? 1989-02-01