GB/T 17821-2008 English Version, GB/T 17821-2008 Rubber latex - Determination of density between 5℃ and 40℃ (English Version)

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GB/T 17821-2008 Rubber latex - Determination of density between 5℃ and 40℃ (English Version)
Standard No.:	GB/T 17821-2008	Status:	superseded remind me the status change Email:
Target Language:	English	File Format:	PDF
Word Count:	3000 words	Translation Price(USD):	70.0 remind me the price change Email:
Implemented on:	2008-11-1	Delivery:	via email in 1~3 business day

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Standard No.:	GB/T 17821-2008
English Name:	Rubber latex - Determination of density between 5℃ and 40℃
Chinese Name:	胶乳 5℃至40℃密度的测定
Chinese Classification:	B72 Forestry chemical raw material
Professional Classification:	GB National Standard
Source Content Issued by:	AQSIQ; SAC
Issued on:	2008-05-15
Implemented on:	2008-11-1
Status:	superseded
Superseded by:	GB/T 17821-2025 Rubber latex—Determination of density between 5℃ and 40℃
Superseded on:	2025-11-1
Superseding:	GB/T 17821-1999 Rubber latex--Determination of density between 5℃and 40℃
Target Language:	English
File Format:	PDF
Word Count:	3000 words
Translation Price(USD):	70.0
Delivery:	via email in 1~3 business day

Standard

GB/T 17821-2008 Rubber latex - Determination of density between 5℃ and 40℃ (English Version)
Standard No.	GB/T 17821-2008
Status	superseded
Language	English
File Format	PDF
Word Count	3000 words
Price(USD)	70.0
Implemented on	2008-11-1
Delivery	via email in 1~3 business day

Detail of GB/T 17821-2008

Standard No.

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ICS Classification

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Introduction of GB/T 17821-2008

本标准代替ＧＢ／Ｔ１７８２１—１９９９《胶乳　５℃至４０℃密度的测定》。本标准规定了在5℃～40℃温度下测定浓缩天然胶乳密度的方法。本标准是为了在不能直接称量或不能控制实验室温度的情况下利用密度测定来计算已测定体积的胶乳的质量而制定的。用于测定密度的胶乳样品中所含的空气数量应与测定体积时所含的空气数量相同。因此，在取样前应让胶乳静置至少24h，以便能除去气泡。测定密度时的温度宜与测定体积时的温度相同，否则就应进行校正。本标准适用于各种天然胶乳以及合成胶乳、配合胶乳和预硫化胶乳，也适用于橡胶水分散体。但7.2中所列的温度校正对这些胶乳不一定都适用。在第２章规范性引用文件引用了ＧＢ／Ｔ８２９０，该标准与ＩＳＯ７０５：１９９４的相应部分没有技术性差异。本标准与ＧＢ／Ｔ１７８２１—１９９９相比主要差异是按ＧＢ／Ｔ１．１—２０００和ＧＢ／Ｔ２０００１．４—２００１的要求对ＧＢ／Ｔ１７８２１—１９９９作了编辑性修改。

Contents of GB/T 17821-2008

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Keywords:
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