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GB/T 10802-2006 (GB/T 10802-2023 Newer Version) PDF English


Search result: GB/T 10802-2006 (GB/T 10802-2023 Newer Version)
Standard IDContents [version]USDSTEP2[PDF] delivered inName of Chinese StandardStatus
GB/T 10802-2023English269 Add to Cart 3 days General flexible polyurethane cellular plastics Valid
GB/T 10802-2006English105 Add to Cart 0-9 seconds. Auto-delivery. General flexible polyether polyurethane cellular plastics Obsolete
GB/T 10802-1989English279 Add to Cart 3 days Cellular plastics--Flexible polyurethane foam Obsolete
BUY with any currencies (Euro, JPY, GBP, KRW etc.): GB/T 10802-2006     Newer/related standards: GB/T 10802-2023

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GB/T 10802-2006: PDF in English (GBT 10802-2006)

GB/T 10802-2006 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 83.100 G 32 Replacing GB/T 10802-1989 General Flexible Polyether Polyurethane Cellular Plastics ISSUED ON: SEPTEMBER 04, 2006 IMPLEMENTED ON: FEBRUARY 01, 2007 Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of PRC. Table of Contents Foreword ... 3 Introduction ... 5 1 Scope ... 6 2 Normative References ... 6 3 Classification ... 7 4 Requirements ... 7 5 Test Methods... 9 6 Inspection Rules ... 12 7 Marking, Packaging, Transportation and Storage ... 13 Appendix A (Informative) Category, Applicable Type and Application Filed of Indentation Property ... 14 General Flexible Polyether Polyurethane Cellular Plastics 1 Scope This Standard specifies the classification, requirements, test methods, inspection rules and marking, packaging, transportation, and storage of general flexible polyether polyurethane cellular plastics. This Standard is applicable to polyether flexible polyurethane cellular plastics in block, sheet and strip shapes or cut into the above shapes. 2 Normative References The provisions in following documents become the provisions of this Standard through reference in this Standard. For dated references, the subsequent amendments (excluding corrigendum) or revisions do not apply to this Standard, however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies. GB/T 2918-1998 Plastics - Standard Atmospheres for Conditioning and Testing (idt ISO 291-1997) GB/T 6342-1996 Cellular Plastics and Rubbers - Determination of Linear Dimensions (idt ISO 1923:1981) GB/T 6344-1996 Polymeric Materials, Cellular Flexible - Determination of Tensile Strength and Elongation at Break (idt ISO 1798:1983) GB/T 6669-2001 Polymeric Material, Cellular Flexible - Determination of Compression Set (idt ISO 1856:1980) GB/T 6670-1997 Cellular Plastics - Flexible Polyurethane Foam - Determination of Resilience (neq ASTM D 3574:1981) GB 8410 Flammability of Automotive Interior Materials GB/T 9640-1988 Polymeric Materials, Cellular Flexible - Accelerated Ageing Tests (idt ISO 2440:1983) measuring points shall be even. Measure 80mm away from the edge of the length. 5.3 Senses 5.3.1 Visual inspection of colour and pollution under normal light. 5.3.2 The pores and the skin on both sides are measured by a measuring tool with an accuracy of 0.5mm; and the length of the crack is measured by a tape with a minimum graduation of 1mm. 5.3.3 Odour: smell with nose. 5.4 Indentation property Carry out according to method B specified in GB/T 10807-2006. The specimen size is (380 ± 20) mm × (380 ± 20) mm × (50 ± 2) mm; the number of specimens is 3; and the indentation hardness at 25% and 65% indentation is measured. Calculate the ratio of the indentation hardness at 65% and 25%. 5.5 Determination of compression set It shall be carried out according to the provisions of Method-A in GB/T 6669-2001; test temperature 70°C ± 2°C, test time 22h, compress 75% of specimen thickness (compressed to 25% of specimen thickness). Sample size is of (50 ± 1) mm × (50 ± 1) mm × (25 ± 1) mm; the number of specimens is 5. 5.6 Resilience According to the provisions of GB/T 6670-1997, the specimen size is (100 ± 3) mm × (100 ± 3) mm × (50 ± 2) mm, and the number of specimens is 3. 5.7 Tensile strength and elongation rate It shall be carried out according to the provisions of GB/T 6344-1996, the test speed is at (500 ± 50) mm/min; the specimen thickness is 10mm; and the effective gauge length is 50mm. The number of specimens is 5. 5.8 Tearing strength It shall be carried out according to the provisions of GB/T 10808-2006, the test speed is at 50mm/min. The size of the specimen is at (25 ± 0.5) mm × (25 ± 0.5) mm × (150 ± 1) mm; one end of the specimen is cut with a 50mm long incision; and the number of specimens is 3. 5.9 Tensile strength and its rate of change after dry heat aging The dry heat aging test shall be carried out according to the provisions of GB/T 9640- 1988; the test temperature is at 140°C; after standing for 16h, then measure the tensile 6 Inspection Rules 6.1 Classification of Inspection 6.1.1 Exit-factory inspection The exit-factory inspection items indicate 25% indentation hardness, 65%/25% indentation ratio, tensile strength, elongation rate, tearing strength, resilience in 4.1, 4.2, 4.3, and 4.4. 6.1.2 Type inspection The Type inspection items shall be the ones in 4.1, 4.2, 4.3, 4.4 and 4.6. Type inspection shall be carried out in one of the following situations: a) Finalized appraisal for the trial production of new product; b) After formal production, if there are major changes in structure, raw materials, and processes, which may affect product performance; c) An inspection shall be conducted every six months during normal production; d) When the product resumes production after a long-term suspension of production for half a year; e) When there is a big difference between the exit-factory inspection result and the last Type inspection result; f) When the national quality supervision agency requests for type inspection. 6.1.3 Appraisal inspection Appraisal inspection items indicate all items in Clause 4. It shall be carried out when the new product is trial-produced or when the quality of the product is disputed. 6.2 Batching and sampling 6.2.1 Batching Take the products with the same raw material, the same formula, and the same process conditions, and production quantity no more than100t as a batch; if the products are produced in boxes, then take the quantity no more than 10t as a batch. 6.2.2 Sampling Three blocks of cut products are sampled for size deviation and sense. The physical and mechanical properties, fatigue property of repeated indentation under constant ......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.