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发表于 2008-11-12 21:40:34
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来自: 中国上海
原帖由 freeshaw1 于 2008-11-12 11:57 发表 http://www.3dportal.cn/discuz/images/common/back.gif* b- d1 n- U* ?6 g
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版主回答不对,UPVC的U是UNPLASTIZED的缩写,未增塑的意思,通常UPVC或者PVC-U都翻译成硬聚氯乙烯,与加大量增塑剂的软PVC相对应.
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+ U7 i0 J6 c5 R8 Z! @3 U* j另,交联的英文词是 cross-link, 不是USA中的UNITED.
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& X' T" Q5 W1 J* U$ {- A/ I+ ]: V/ x请参考下列标准:: r$ @7 L( q; f& S. R
ASTM F2080-2006 Standard Specification for Cold-Expansion Fittings With Metal Compression-Sleeves for Cross-Linked Polyethylene (PEX) Pipe7 M8 A! C2 f- g: s, K4 C* @
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ISO 4422-3-1996 Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supply -- Specifications -- Part 3: Fittings and joints! ~0 }7 C' j# `$ y5 Z; X
$ u- s3 m) `0 v M$ _ `; ^, m3 QBS 3505:1986 Specification for unplasticized polyvinyl chloride (PVC-U) pressure pipes for cold potable water' q' d0 h1 M/ H( s4 ~9 I5 C" O* w
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ISO 21138 :2007 Plastics piping systems for non-pressure underground drainage and sewerage -- Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) ; H6 S8 @8 C6 y& g
5 e8 c: g' v$ \$ T. ^" U交联聚氯乙烯的缩写是XLPVC, 版主可以以此为关键词搜索的. |
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