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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.gif5 ?8 I$ q( \( e+ z
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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.& I7 g6 x1 O& w2 Z
( ?5 L$ o) W0 q7 e f" ?另,交联的英文词是 cross-link, 不是USA中的UNITED.
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, s/ t, K" E+ E- C& W请参考下列标准:
* ]5 K! P2 m4 n( g: c ^/ {ASTM F2080-2006 Standard Specification for Cold-Expansion Fittings With Metal Compression-Sleeves for Cross-Linked Polyethylene (PEX) Pipe
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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+ r" K$ T O5 h% X0 a
% [$ U/ d/ z$ CBS 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) 1 k4 T2 g7 ~$ y, y3 i: y
: y: H, e' x4 d, [* `" d# _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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