GB/T 25260.2-2018 English PDF

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GB/T 25260.2-2018: Synthetic rubber latex -- Part 2: Carboxyl acrylonitrile-butadiene rubber latex (XNBRL)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 25260.2-2018	109	Add to Cart	3 days	Synthetic rubber latex -- Part 2: Carboxyl acrylonitrile-butadiene rubber latex (XNBRL)	Valid

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Basic data

Standard ID: GB/T 25260.2-2018 (GB/T25260.2-2018)
Description (Translated English): Synthetic rubber latex -- Part 2: Carboxyl acrylonitrile-butadiene rubber latex (XNBRL)
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G35
Classification of International Standard: 83.060
Word Count Estimation: 5,560
Date of Issue: 2018-12-28
Date of Implementation: 2019-11-01
Quoted Standard: SH/T 1149; SH/T 1150-2011; SH/T 1151; SH/T 1152-2014; SH/T 1153-2011; SH/T 1154-2011; SH/T 1156-2014; SH/T 1503-2014; SH/T 1760-2007
Regulation (derived from): National Standard Announcement No. 17 of 2018
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies the technical requirements, test methods, inspection rules, signs and accompanying documents, and packaging, transportation and storage of carboxylated nitrile latex (XNBRL). This standard is applicable to carboxylated nitrile latex prepared by emulsion polymerization using butadiene, acrylonitrile and unsaturated carboxylic acid as main monomers.

GB/T 25260.2-2018: Synthetic rubber latex -- Part 2: Carboxyl acrylonitrile-butadiene rubber latex (XNBRL)

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Synthetic rubber latex--Part 2. Carboxyl acrylonitrile--butadiene rubber latex (XNBRL) ICS 83.060 G35 National Standards of People's Republic of China Synthetic latex - Part 2. Carboxyl nitrile latex (XNBRL) Syntheticrubberlatex-Part 2. Carboxylacrylonitrile-butadienerubberlatex (XNBRL) Published on.2018-12-28 2019-11-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

GB/T 25260 "Synthetic Latex" is divided into three parts. --- Part 1. Carboxyl styrene butadiene latex (XSBRL) 56C, 55B; --- Part 2. carboxylated nitrile latex (XNBRL); --- Part 3. Chloroprene latex. This part is the second part of GB/T 25260. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part was proposed by the China Petroleum and Chemical Industry Federation. This part is under the jurisdiction of the National Rubber and Rubber Products Standardization Technical Committee (SAC/TC35). This section drafted by. Anqing Hualan Technology Co., Ltd., Zhenjiang Nandi Chemical Co., Ltd., China National Petroleum Corporation Petrochemical Research Institute, Zhejiang Tianchen Rubber Industry Co., Ltd., Ningbo Shunze Rubber Co., Ltd., National Petrochemical Product Quality Supervision Inspection Center (Anqing), Zhonghong Pulin (Beijing) Medical Products High-tech Research Institute Co., Ltd. The main drafters of this section. Lu Wei, Xu Guoliang, Zhuang Fujin, Li Xiaoyin, Zhang Hongqiang, Zhang Zhaoqing, Wang Haiyan, Zhang Sen, Han Xiaofeng, Sang Shujun, Ling Zhishui, Wang Guiyu, Ma Nan. Synthetic latex - Part 2. Carboxyl nitrile latex (XNBRL)

1 Scope

This part of GB/T 25260 specifies the technical requirements, test methods, inspection rules, marking and accompanying of carboxylated nitrile latex (XNBRL). Line documents as well as packaging, transportation and storage. This section applies to carboxylated nitrile latex prepared by emulsion polymerization using butadiene, acrylonitrile and unsaturated carboxylic acid as main monomers.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. SH/T 1149 synthetic rubber latex sampling SH/T 1150-2011 Determination of pH of synthetic rubber latex Determination of high-speed mechanical stability of SH/T 1151 synthetic latex SH/T 1152-2014 Determination of apparent viscosity of synthetic rubber latex SH/T 1153-2011 Determination of coagulum content (sieving residue) of synthetic rubber latex SH/T 1154-2011 Determination of total solid content of synthetic rubber latex SH/T 1156-2014 Determination of surface tension of synthetic rubber latex Determination of acrylonitrile content in nitrile latex by SH/T 1503-2014 SH/T 1760-2007 Determination of residual monomers and other organic components in synthetic rubber latex Liquid injection method

3 Technical requirements

3.1 Appearance. XNBRL is a white emulsion with no foreign matter and visible agglomerates. 3.2 Technical indicators. The technical indicators of XNBRL should meet the requirements of Table 1, and be determined according to the test method given in Chapter 4. Table 1 XNBRL technical indicators project Highly bound acrylonitrile high binding acrylonitrile in acrylonitrile Excellent product, qualified product, superior product, qualified product, superior product, qualified product Combined acrylonitrile content (mass fraction) /% ≥25.0~< 30.0 ≥30.0~< 35.0 ≥35.0~< 41.0 Total solid content (mass fraction) /% ≥ 42.0 Viscosity/(mPa · s) < 100 pH 7.5~9.0 Residual volatile organic content (quality score) /% ≤0.003 ≤0.005 ≤0.003 ≤0.005 ≤0.003 ≤0.005 ......

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