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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
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. p8 [, Y7 R, m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:2 p0 h/ J% y& p6 U2 _# S
ASTM F2080-2006 Standard Specification for Cold-Expansion Fittings With Metal Compression-Sleeves for Cross-Linked Polyethylene (PEX) Pipe, A; V; A+ _7 Q% P6 g! g' Y- e
7 p$ G5 s$ ?' |$ OISO 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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8 k/ H; n7 D$ G4 {, b/ {; XBS 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) " Y# G3 t) e: K& }$ x) g! r, f
' d M* o( Y0 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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