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GB/T 10802-2023 PDF English

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GB/T 10802-2023: General flexible polyurethane cellular plastics
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GB/T 10802: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] deliveryName of Chinese StandardStatus
GB/T 10802-2023English245 Add to Cart 0-9 seconds. Auto-delivery 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

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GB/T 10802   GB/T 10801.1   GB/T 10801.2   

GB/T 10802-2023: General flexible polyurethane cellular plastics

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GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 83.100 CCS G 32 Replacing GB/T 10802-2006 General flexible polyurethane cellular plastics Issued on. SEPTEMBER 07, 2023 Implemented on. APRIL 01, 2024 Issued by. State Administration for Market Regulation; Standardization Administration of the People's Republic of China.

Table of Contents

Foreword... 3 1 Scope... 5 2 Normative references... 5 3 Classification... 6 4 Grading... 6 5 Requirements... 7 6 Test methods... 10 7 Inspection rules... 12 8 Marking, packaging, transportation and storage... 13 Annex A (informative) Categories and recommended application areas... 15

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020 "Directives for standardization - Part 1.Rules for the structure and drafting of standardizing documents". This document replaces GB/T 10802-2006 "General flexible polyether polyurethane cellular plastics". Compared with GB/T 10802-2006, in addition to structural adjustments and editorial changes, the main technical changes are as follows. a) Changed the scope of application (see Chapter 1 of this Edition; Chapter 1 of Edition 2006); b) Changed the classification method and added grading (see Chapters 3 and 4 of this Edition; Chapter 3 of Edition 2006); c) Changed the deviation requirements for length, width and thickness (see 5.1, 5.2 of this Edition; 4.1, 4.2 of Edition 2006); d) Changed the appearance requirements (see 5.3 of this Edition; 4.3 of Edition 2006); e) Added the apparent density deviation requirements (see 5.4 of this Edition); f) Added the 40% indentation hardness deviation requirements (see 5.5 of this Edition); g) Changed the 75% compression permanent deformation requirements (see Table 8 of this Edition; Table 4 of Edition 2006); h) Added the odor level requirements (see Table 8 of this Edition); i) Changed the 40% indentation hardness loss value requirements after constant load repeated indentation fatigue (see Table 8 of this Edition; Table 5 of Edition 2006); j) Changed the elongation at break requirement (see Table 8 of this Edition; Table 4 of Edition 2006); k) Changed the tear strength requirement (see Table 8 of this Edition; Table 4 of Edition 2006); l) Added the ash content requirement (see Table 8 of this Edition); m) Added the formaldehyde emission requirement (see Table 8 of this Edition); n) Changed the aging and state adjustment (see 6.1 of this Edition; 5.1 of Edition 2006). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing authority shall not be held responsible for identifying any or all such patent rights. This document was proposed by China Light Industry Federation. This document shall be under the jurisdiction of National Technical Committee on Plastic Products of Standardization Administration of China (SAC/TC 48). The drafting organizations of this document. Zhejiang Shengnuomeng Gujia Sponge Co., Ltd., Beijing Technology and Business University, Fujian Dafang Sleep Technology Co., Ltd., Covestro (Shanghai) Investment Co., Ltd., Jiangsu Lvyuan New Materials Co., Ltd., Zhejiang Gaoyu Home Furnishing Technology Co., Ltd., Shanghai Xinyuan New Materials Technology Co., Ltd., Jiangsu Chengfeng New Materials Co., Ltd., Hangzhou Chuangli Polyurethane Co., Ltd., Jiangsu Jianghua Polyurethane Product Quality Inspection Co., Ltd., National Plastic Products Quality Inspection and Testing Center (Beijing), Foshan Hui'an Home Furnishing Co., Ltd., Jiahua Chemical (Shanghai) Co., Ltd., Zhejiang Wansheng Co., Ltd. Main drafters of this document. Qian Hongxiang, Chen Qian, Yang Hongqi, Zhang Jun, Lin Yongfei, Chen Zhengming, Qiu Guohao, Wu Hao, Liu Fei, Ruan Guoqiao, Yin Jian, Deng Naxin, Ban Xiaolong, Ni Yang. This document was first published in 1989.It was first revised in 2006.This is the second revision. General flexible polyurethane cellular plastics

1 Scope

This document specifies the classification, grading, requirements, inspection rules and marking, packaging, transportation, storage of general flexible polyurethane cellular plastics. It also describes the corresponding test methods. This document applies to flexible polyurethane foam in sheets, strips, blocks or cut shapes. This document does not apply to slow-rebound flexible polyurethane foam, high- rebound flexible polyurethane foam and thermoplastic polyurethane elastomer foam.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 2918-2018, Plastics -- Standard atmospheres for conditioning and testing GB/T 6342-1996, Cellular plastics and rubbers. Determination of linear dimensions GB/T 6343-2009, Cellular plastics and rubbers -- Determination of apparent density GB/T 6344-2008, Flexible cellular polymeric materials -- Determination of tensile strength and elongation at break GB/T 6669-2008, Flexible cellular polymeric materials -- Determination of compression set GB/T 6670-2008, Flexible cellular polymeric materials -- Determination of resilience by ball rebound GB/T 9345.1-2008, Plastics -- Determination of ash -- Part 1.General methods

3 Classification

General flexible polyurethane cellular plastics are divided into five categories according to their application areas. X, V, S, A, and L. Their usage types are shown in Table 1.

4 Grading

General flexible polyurethane cellular plastics are graded according to 40% indentation hardness, see Table 2.

5 Requirements

5.1 Length and width deviation 5.1.1 The length and width deviation of cut and formed products shall comply with the requirements of Table 3. 5.2 Thickness deviation 5.2.1 The thickness deviation of cut and formed products shall comply with the requirements of Table 4. 5.3 Appearance 5.4 Apparent density deviation The apparent density deviation shall comply with the requirements of Table 6. 5.5 40% indentation hardness deviation 5.7 Combustion performance The combustion performance shall meet the standard requirements of the product application field.

6 Test methods

6.1 Timeliness and conditioning The test samples shall be placed under natural conditions for 72 h from the date of product production before sampling. 6.2 Determination of length, width and thickness deviation 6.2.1 Limit deviation of length and width. according to GB/T 6342-1996.Use a tape measure with a minimum graduation value of 1 mm to measure 3 values of length and width. Calculate the limit deviation of length and width. The number of specimens is 3. 6.3 Appearance 6.3.1 Color and stains shall be visually inspected under natural light. 6.5 40% indentation hardness deviation According to Method B in GB/T 10807-2006, test the indentation hardness values at 25%, 40%, and 65%. 6.6 Rebound rate According to Method B in GB/T 6670-2008.Number of specimens. 3.Specimen size. (100 mm±3 mm) × (100 mm±3 mm) × (50 mm±2 mm). 6.8 Determination of 65%/25% depression ratio Conduct the test in accordance with Method B in GB/T 10807-2006.Test the indentation hardness values at 25%, 40%, and 65%. Calculate the 65%/25% indentation ratio. 6.9 Determination of odor level The odor level shall be in accordance with Annex B of QC/T 850-2011. 6.10 Determination of 40% indentation hardness loss after repeated indentation fatigue under constant load The test is carried out in accordance with the provisions of QB/T 2819-2006.The number of specimens is 3. 6.14 Determination of tensile strength after hygrothermal aging and rate of change of tensile strength after hygrothermal aging 6.15 Ash content Proceed as per Method A in GB/T 9345.1-2008. The test temperature is 825°C. The residue is calcined until constant weight is reached, but the calcination time at the specified temperature shall not exceed 3 h. 6.16 Formaldehyde emission According to A.3 of QC/T 850-2011.

7 Inspection rules

7.1 Inspection categories 7.1.1 Exit-factory inspection The exit-factory inspection items are length deviation, width deviation, thickness deviation, appearance, apparent density deviation, 40% indentation hardness deviation, and rebound rate. 7.1.2 Type inspection Type inspection covers all items in Chapter 5.Type inspection shall be conducted in any of the following situations. 7.2 Batching and sampling 7.2.1 Batching For the same raw materials, same formula and same process conditions, the continuous production quantity shall not exceed 50 t per batch. The box-type production quantity shall not exceed 10 t per batch. 7.3 Determination rules

8 Marking, packaging, transportation and storage

8.1 Marking The product shall have a certificate of conformity. The product identification shall include the name, trademark, specification, model, color, production date, batch number, manufacturer name, manufacturer address, inspector seal and standard number, etc. 8.2 Packaging The product can be packaged in plastic bags, woven bags, etc. 8.4 Storage The products shall be stored in a clean, ventilated, dry warehouse, away from heat sources. They shall not come into contact with chemicals. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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