Standard No.:	GB/T 21990-2008
English Name:	Polyvinyl chloride (PVC) pastes - Determination of fineness of grind
Chinese Name:	聚氯乙烯（PVC）糊 刮板细度的测定
Chinese Classification:	G32    Synthetic resin and plastic
Professional Classification:	GB    National Standard
ICS Classification:	83.080.20 83.080.20    Thermoplastic materials 83.080.20
Issued by:	AQSIQ; SAC
Issued on:	2008-06-04
Implemented on:	2008-12-1
Status:	valid
Superseding:	GB/T 12004.5-1992 Polyvinyl chloride plastsols-Determination of fineness of grind
Language:	English
File Format:	PDF
Word Count:	1000 words
Price(USD):	70.00
Delivery:	via email in 1~3 business day

本标准于１９９２年首次发布。本标准代替ＧＢ／Ｔ１２００４．５—１９９２《聚氯乙烯增塑糊刮板细度的测定》。本标准规定了用刮板细度计测定PVC糊中粗粒粒径的方法。本标准适用于ＰＶＣ 糊粗粒粒径的测定。本标准与ＧＢ／Ｔ１２００４．５—１９９２的主要技术性差异如下：
———修改了标准名称；
———增加了“术语和定义”一章（本版第３章）；
———删除了刮板细度计的具体规定（１９９２年版的３．１和３．２）。