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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+ R% d3 e% O {( }% u
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- d) J; @9 X0 B( f' z- D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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9 ?& V; E7 |; N0 A" E8 x; {另,交联的英文词是 cross-link, 不是USA中的UNITED.
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% w% S6 E9 @4 @0 M2 B请参考下列标准:
/ r5 ~4 W4 |; OASTM F2080-2006 Standard Specification for Cold-Expansion Fittings With Metal Compression-Sleeves for Cross-Linked Polyethylene (PEX) Pipe. P7 {0 S/ c- s9 Q, Y- p
) K% z! t3 L5 z) a; eISO 4422-3-1996 Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supply -- Specifications -- Part 3: Fittings and joints
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' {, a' l! ~# dBS 3505:1986 Specification for unplasticized polyvinyl chloride (PVC-U) pressure pipes for cold potable water
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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)
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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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