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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" |; J& H4 i! `9 m7 Q
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+ T/ S. I+ k2 `6 I P9 k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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另,交联的英文词是 cross-link, 不是USA中的UNITED.
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请参考下列标准:
- Z1 c; j8 I9 v( u$ jASTM F2080-2006 Standard Specification for Cold-Expansion Fittings With Metal Compression-Sleeves for Cross-Linked Polyethylene (PEX) Pipe8 c* ~8 }8 b8 B4 @" R* 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! I( N& P4 v1 f0 d
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BS 3505:1986 Specification for unplasticized polyvinyl chloride (PVC-U) pressure pipes for cold potable water
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3 l' j# G3 U! N( D0 l( s4 e, xISO 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)
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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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