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GB/T 13460-2025: Reclaimed rubber - General specification Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 13460: Historical versions
Similar standardsGB/T 13460-2025: Reclaimed rubber - General specification---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/GBT13460-2025GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 83.040.01 CCS G 48 Replacing GB/T 13460-2016 Reclaimed Rubber - General Specification Issued on. MARCH 28, 2025 Implemented on. OCTOBER 1, 2025 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 3 1 Scope... 5 2 Normative References... 5 3 Terms and Definitions... 6 4 Classification... 7 5 Technical Requirements... 8 6 Test Methods... 9 7 Inspection Rules... 10 8 Packaging, Marking, Storage and Transportation... 11 Appendix A (normative) Determination of Heating Loss... 12 Appendix B (normative) Specimen Preparation for Tensile Strength and Elongation at Break... 131 ScopeThis document specifies the classification, technical requirements, inspection rules, packaging, marking, storage and transportation of reclaimed rubber, and describes the corresponding test methods. This document applies to the production and inspection of reclaimed rubber made from various waste rubber products.2 Normative ReferencesThe contents of the following documents constitute indispensable clauses of this document through the normative references in the text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 528 Rubber, Vulcanized or Thermoplastic - Determination of Tensile Stress-strain Properties GB/T 533-2008 Rubber, Vulcanized or Thermoplastic - Determination of Density GB/T 1232.1 Rubber, Unvulcanized - Determinations Using a Shearing-disc Viscometer - Part 1.Determination of Mooney Viscosity GB/T 2449.1 Sulphur for Industrial Use - Part 1.Solid Product GB/T 2941-2006 Rubber, General Procedures for Preparing and Conditioning Test Pieces for Physical Test Methods GB/T 3185 Zinc Oxide (indirect method) GB/T 3516 Rubber - Determination of Solvent Extract GB/T 4498.1 Rubber - Determination of Ash - Part 1.Muffle Furnace Method GB/T 6038 Rubber Test Mixes - Preparation, Mixing and Vulcanization - Equipment and Procedures3 Terms and DefinitionsThe terms and definitions defined in GB/T 9881 and the following are applicable to this document. 3.1 reclaimed rubber Vulcanized rubber that has been plasticized by thermal, mechanical and (or) chemical action and is mainly used as a rubber diluent, extender or processing aid. [source. GB/T 9881-2008, 2.330, modified] 3.2 reclaimed butyl rubber Reclaimed rubber made from waste rubber products with butyl rubber as the main component. 3.3 reclaimed butadiene-acrylonitrile rubber Reclaimed rubber made from waste rubber products with butadiene-acrylonitrile rubber as the main component. 3.4 reclaimed natural rubber Reclaimed rubber made from waste rubber products with natural rubber as the main component.4 Classification4.1 Reclaimed rubber can be classified in accordance with the main rubber varieties and the sources of waste rubber. 4.2 For reclaimed rubber with clarified main rubber components, it is classified in accordance with the main rubber components it contains and represented by the English prefix “R-” meaning “reclaimed” and the symbol of the rubber varieties, as shown in Table 1.5 Technical Requirements5.1 Appearance The reclaimed rubber shall be uniform in texture and shall not contain visible non-rubber component impurities, such as metal, wood chips and sand grains, etc. 5.2 Properties The properties of the reclaimed rubber shall comply with the provisions of Table 3.6 Test Methods6.1 Appearance Visual inspection under natural light. 6.2 Heating Loss Carry out the determination in accordance with Appendix A. 6.3 Acetone Extract Carry out the determination in accordance with Method A in GB/T 3516, with acetone as the solvent and Soxhlet extractor as the instrument. 6.7 Mooney Viscosity 6.8 Density Take the non-vulcanized rubber sheet specimen and determine it in accordance with Method B in GB/T 533-2008. 6.9 Tensile Strength and Elongation at Break 6.10 Contents of Polycyclic Aromatic Hydrocarbons and Hazardous Substances In accordance with GB/T 26125, determine the content of mercury (Hg), lead (Pb), cadmium (Cd), hexavalent chromium (Cr6+), polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE).7 Inspection Rules7.1 Inspection 7.1.1 Inspection is divided into type inspection and exit-factory inspection. 7.2 Batch The inspection is carried out in batches, with reclaimed rubber produced on the same production line, with the same raw materials, the same formulas and the same process as a batch, and the mass of each batch shall not exceed 50 t. 7.3 Qualification Determination If any item of the inspection results does not meet the requirements of this document, double samples shall be taken from that batch of products to a re-inspection of the disqualified item. If the re-inspection results meet the requirements of this document, then, the batch of products shall be determined as qualified. Otherwise, the batch of products shall be determined as disqualified.8 Packaging, Marking, Storage and Transportation8.1 Packaging The packaging materials and requirements shall be agreed upon by both the supply-side and the demand-side. 8.2 Marking Each outer package shall be marked with product name, reclaimed rubber code, net weight, manufacturer name, production date and serial No. of this document.Appendix A(normative) Determination of Heating Loss A.1 Instruments A.2 Test Steps ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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