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GB/T 36089-2018 PDF English

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GB/T 36089-2018: Acrylonitrile-butadiene rubber (NBR)
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GB/T 36089-2018English90 Add to Cart 0-9 seconds. Auto-delivery Acrylonitrile-butadiene rubber (NBR) Valid

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GB/T 36089-2018: Acrylonitrile-butadiene rubber (NBR)

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT36089-2018
GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 83.060 G 35 Acrylonitrile - Butadiene Rubber (NBR) 丙烯腈-丁二烯橡胶 (NBR) Issued on: MARCH 15, 2018 Implemented on: OCTOBER 1, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the People’s Republic of China.

Table of Contents

Foreword ... 3 1 Scope ... 4 2 Normative References ... 4 3 Technical Requirements ... 5 4 Test Methods ... 6 5 Inspection Rules ... 8 6 Packaging, Marking, Transportation and Storage ... 9 7 Shelf Life ... 9 Acrylonitrile - Butadiene Rubber (NBR)

1 Scope

This Standard specifies the technical requirements, test methods, inspection rules, product packaging, marking, transportation, storage and shelf life of acrylonitrile- butadiene rubber (NBR) [namely, nitrile rubber (NBR)]. This Standard is applicable to nitrile rubber, which takes butadiene and acrylonitrile as the monomer, and adopts low-temperature emulsion polymerization in production; this standard is applicable to three types of nitrile rubber, namely, intermediately bound acrylonitrile, intermediately and highly bound acrylonitrile, and highly bound acrylonitrile.

2 Normative References

The following documents are indispensable to the application of this Standard. In terms of references with a specified date, only versions with a specified date are applicable to this Standard. The latest version (including all the modifications) of references without a specified date is applicable to this Standard. GB/T 528 Rubber, Vulcanized or Thermoplastic - Determination of Tensile Stress- strain Properties GB/T 531.1 Rubber, Vulcanized or Thermoplastic - Determination of Indentation Hardness - Part 1. Duromerer Method (Shore Hardness) GB/T 1232.1 Rubber, Unvulcanized - Determinations Using a Shearing-disc Viscometer - Part 1. Determination of Mooney Viscosity GB/T 4498.1-2013 Rubber - Determination of Ash - Part 1. Muffle Furnace Method GB/T 9869 Rubber - Measurement of Vulcanization Characteristics with the Oscillating Disc Curemeter GB/T 15340 Rubber, Raw Natural and Raw Synthetic - Sampling and Further Preparative Procedures GB/T 16584 Rubber - Measurement of Vulcanization Characteristics with Rotorless Curemeters GB/T 19187 Sampling Procedures for Inspection of Raw Synthetic Rubber GB/T 19188 Rubber, Raw Natural and Raw Synthetic - General Guidance on Storage GB/T 24131-2009 Rubber, Raw - Determination of Volatile Matter Content GB/T 24797.3 Film for Wrapping Rubber Bales – Part 3. Ethylene-propylene-diene Rubber (EPDM), Acrylonitrilebutadiene Rubber (NBR), Hydrogenerated Nitrile- butadiene Rubber (HNBR), Acrylic-ethylene Rubber (AEM) and Acrylic Rubber (AMC) GB/T 34685-2017 Acrylonitrile-butadiene Rubber (NBR) - Evaluation Procedure SH/T 1157.1 Rubber, Raw - Determination of Bound Acrylonitrile Content in Acrylonitrile-butadiene Rubber (NBR) - Part 1. Combustion (Dumas) Method SH/T 1157.2-2015 Rubber, Raw - Determination of Bound Acrylonitrile Content in Acrylonitrile-butadiene Rubber (NBR) - Part 2. Kjeldahl Method SH/T 1159-2010 Acrylonitrile-butadiene Rubber (NBR) - Determination of the Swelling Ratio

3 Technical Requirements

3.1 Appearance The primary shape of nitrile rubber is block, with uniform colors and no foreign matters. 3.2 Technical Indicators Please refer to Table 1 for the test items and technical indicators of nitrile rubber. hardness tester.

5 Inspection Rules

5.1 Inspection Items 5.1.1 Model inspection In accordance with the technical requirements in Table 1, model inspection shall be conducted in trial production of new products; when there are significant changes in raw materials and technologies; when production is resumed after suspension; after a certain stipulated inspection cycle. In terms of model inspection items in Table 1, different inspection cycles and frequencies can be stipulated. 5.1.2 Exit-factory inspection Volatile compounds, Mooney viscosity and compound acrylonitrile in Table 1 are exit- factory inspection items. Through the negotiation with users, other items in Table 1 can also be stipulated as exit-factory inspection items. 5.2 Group Rules and Sampling Plans 5.2.1 Group rules Condensed and dried products based on a jar of evenly mixed rubber cement shall be considered as one batch. Products with uniform quality, and the same raw materials and technological conditions shall be considered as one batch. The mass of each batch shall not exceed 100 t. 5.2.2 Sampling plans In exit-factory inspection, take samples in accordance with time frames. Samples that are taken by time frames shall be prepared in accordance with GB/T 15340. In arbitration test, conduct sampling and sample preparation in accordance with the stipulation in GB/T 19187. 5.3 Determination Rules 5.3.1 Exit-factory determination rules Conduct inspection and acceptance check in accordance with the mixed laboratory sample stipulated in GB/T 19187. When any item does not conform to the technical requirements in Table 1, take the reserved sample and conduct re-inspection of the unqualified item. In accordance with the re-inspection result, determine the mass. 5.3.2 Arbitration determination rules ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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