GB 1842-1999 聚乙烯环境应力开裂试验方法.pdf

;8331 ??080.20 ?? 8 ?? ?? ?? ?? ?? ?? ?ú ?ú ?? ±ê ? GB/T 1842-1999 ?? ?? ? ?· ?? ? ?? ?? ?? ?? ?é ·? ·¨ Test method for environmental stress- cracking of polyethylene plastics 1999?08?10·??? 2000?06?01?? ?ú ?? ?? ?? ?? ?? ?à ?? ?? ·? ?? GB/T 1842-1999 ? ?? ±?±ê???Ч????ASTM D1693,1997???????????·?????????±ê????é·?·¨?·?? ±?±ê???ASTM D1693:1997?????????ù±???????÷????ì?: 1±?±ê??????¨????±????é???????????????????? 2???????????ù·??????????(TX-10). 3?????ì?????????6h,7h,12h,20h?????ì???? 4±?±ê?????????°?GB/T 6379?????????? ±?±ê???GB/T 1842-1980???÷????ì?: 1 ±?±ê??????¨????±????é???????????????????? 2 ?????????????????(0. 30^-0.40 mm), 3??????100???????é?????? 4 50???????????10% (V/V), ±?±ê????úЧ??????????ú??GB/T 1842-19800 ±?±ê??????A??±ê???????? ±?±ê??????B???á???????? ±?±ê??????ú??????¤????????á???? ±?±ê?????ú????±ê??????????á????????÷??ú?·??á(TC 15/SC 1)?é???? ±?±ê???????λ:???ú??????¤???????±±?????¤??????? ±?±ê??÷???????:????÷?????ú?????? ??? ±?±ê???1980?ê?×??·?????±??????????????? ?? ?? ?? ?? ?? ?? ?ú ?ú ?? ±ê ? ?? ??? ?·?? ? ?????? ???é ·?·¨ GB/T 1842-1999 ASTM D1693:1997 Test method for environmental stress- cracking of polyethylene plastics ?ú??GB/T 1842-1980 ·?Χ ±?±ê????¨????????·??????????????é·?·¨?? ±?±ê??????????¨??????ù???????°????1-???????????????50% (m/m)????????????·???? ???????????à??3 % (m/m)?????????????¨?????????·????????????????? 2 ????±ê? ????±ê??ù°ü???????????????±?±ê??????????????±?±ê?????????±?±ê???°?????ù?°?±??ù ???Ч???ù??±ê????á±??????????±?±ê????÷·????????????±ê?×???°?±??????????? GB/T 2035-1996 ?????????°???¨?? GB/T 2918-1998 ???????ù???÷???????é??±ê??·?? GB/T 6379-1986 ????·?·¨???????? ?????é???????é??¨±ê?????·?·¨???????????????? GB/T 9352-1988 ????????????????ù????±? 3?¨?? ±?±ê???????????¨???? 3.1 ??????? stress crack ??????????????úе??????÷????????????????????ò???????????? ???à???????????????ù???·??????ì??????·???????????????ò??????????ò????????????×÷ ???????????????????С??????????????á??????????????ê???? 3.2??????????? stress crack failure ±????é??·????????????ì?????????ù?????????????????????ò?????ù???? ?????????ì?????? ???ù?????? ?????????????????????????ü900??·??ò?ò??Χ·????????????????ù????·??????±í???ú???? ???ú??×???·????±í?????????ò????ú???????????ù????????? 3.3?·????????????Fso time of environmental stress crack Fso ???ù??????é?????????????°?·???????????? 4 ·?·¨?á? °?±í???????????????ù???ú??????±í???????????é?????????ì???ù·??ú????????????????????? ?? ?ú????f?????à·???1999?08?10?ú? 2000?06?01?? 1 GB/T 1842-1999 5 ?????°??? 5.1 ×÷???????ù????????°???ù?????ú???ì???????·??????????????????ù±í????????????????ú ?ú???ó???à?á?????±ê????¨???????????????????·??????????? 5.2 ??±?·?·¨????????????????????????¤???????? 6 ???é?It 6.1 ???ù?????°???é???÷:???1, iJ ???ù ???ù±????? ???÷×é?? A????ù?¤????38 mm?2.5 mm; B????ù?í????13 mm?0. 8 mm; C????ù????(??±í2); D?????????(??±í2); E????ù±??????¤????165 mm; F????ù±??????í???????í????12. 00 mm???.05 mm;?????í????16 mm; G????ù ±???????????10 mm; H-15 mm, I????ù±?????±???,2 mm; J??×??.5 mm; K??à???×??????à??15 mm ?1 ???é???÷? 6.2 ???:?????????????????????????????б???????ù?? 6.3 ????????:???2????°?????????ó?????ù??????????????????????ù???¤??·??ò?????λ??±í?? ????????λ?????????????30???ó??è???ì?é?????????±????ò???????°??ü?????°???????? ???????????100???? A???????????3 mm; B??????í????18.9^19.2 mm; C?°??????ò1. 5 mm ?2???????? 6.4 ???ù±?????:????????????ò????????¤?????????????1???¤???????à????à??????????????×?? ???????????±í????????? 6.5 ????:??????§????????????×????¤???ó??200 mm??????30.32 mm. GB/T 1842-1999 6.6????:????0. 08-0. 13 mm??????°ü????×??? 6. 7???????:??±????????????50?????. S 'C?°100???0.5??C 6.8??????:·?????????????? 6.9???ù???ú???:???3 6.10???ù????¤??:?