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GB/T 18943-2008 English PDF

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GB/T 18943-2008: Cellular rubbers and plastics -- Determination of dynamic cushioning performance
Status: Valid

GB/T 18943: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 18943-2008English234 Add to Cart 3 days [Need to translate] Cellular rubbers and plastics -- Determination of dynamic cushioning performance Valid GB/T 18943-2008
GB/T 18943-2003English519 Add to Cart 3 days [Need to translate] Cellular rubbers and plastics -- Determination of dynamic cushioning performance Obsolete GB/T 18943-2003

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Basic data

Standard ID GB/T 18943-2008 (GB/T18943-2008)
Description (Translated English) Cellular rubbers and plastics -- Determination of dynamic cushioning performance
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G44
Classification of International Standard 83.100
Word Count Estimation 12,110
Date of Issue 2008-04-01
Date of Implementation 2008-10-01
Older Standard (superseded by this standard) GB/T 18943-2003
Quoted Standard GB/T 2918; GB/T 2941; GB/T 6342; HG/T 2867; ISO 845
Adopted Standard ISO 4651-1988, IDT
Regulation (derived from) National Standard Approval Announcement 2008 No.5 (Total No.118)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies test methods and rigid porous rubber materials and soft foam dynamic properties of an object by measuring the maximum deceleration falls when the specimen was measured. This test is mainly used for quality assurance. And this test is also used to obtain design data, Appendix A comment can be helpful in the design data. This standard only applies to packaging materials.

GB/T 18943-2008: Cellular rubbers and plastics -- Determination of dynamic cushioning performance

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Cellular rubbers and plastics. Determination of dynamic cushioning performance ICS 83.100 G44 National Standards of People's Republic of China GB/T 18943-2008/ISO 4651. 1988 Replacing GB/T 18943-2003 Porous Rubber & Plastics Determination of dynamic cushioning performance (ISO 4651. 1988, IDT) Posted 2008-04-01 2008-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard is identical with ISO 4651. 1988 "Porous Rubber & Plastics Determination of dynamic cushioning performance", including its amendments ISO 4651- Amd. 1.2006. This standard replaces GB/T 18943-2003 "porous Rubber & Plastics Determination of dynamic cushioning performance." This standard is equivalent translation ISO 4651. 1988. For ease of use, this standard made the following editorial changes. a) "this International Standard" be replaced by "this standard"; b) with a decimal point "." instead of a comma as the decimal point "." This standard GB T 18943-2003 differences and/as follows. --- Increased warning; --- Update the reference standard (see Chapter 2); --- Revised edition 2003 translation errors and text editing errors. Appendix A of this standard is an informative annex. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Rubber and rubber products Standardization Technical Committee rubber sundries Club (SAC/TC35/SC7) centralized. This standard was drafted. Shun Ho Hangzhou Rubber Engineering Limited. The main drafters. Zhang Qinghu. This standard replaces the standards previously issued as follows. --- GB/T 18943-2003. GB/T 18943-2008/ISO 4651. 1988 Porous Rubber & Plastics Determination of dynamic cushioning performance Warning --- personnel should use this standard regular laboratory work experience. This standard does not point out all possible security asked question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This standard specifies the maximum deceleration by measuring objects fall into the specimen when measured porous rubber material and rigid and flexible foams Standard Test Method for dynamic performance materials. This test is mainly used for quality assurance. And this test is also used to obtain design data, Therefore Appendix A comment can be helped to design data. This standard only applies to packaging materials.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 2918 standard plastic sample conditioning and environmental tests (GB/T 2918-1998, idt ISO 291.1997) GB/T 2941 rubber physical test method for preparing and conditioning General Procedure (GB/T 2941-2006, ISO 23529.2004, IDT) GB/T 6342 Determination of foam rubber with linear dimensions (GB/T 6342-1996, idt ISO 1923. 1981) HG/T 2867 standard environment of rubber or plastic coated fabric conditioning and testing (HG/T 2867-1997, idt ISO 2231. 1989) Determination of ISO 845 Cellular plastics and rubbers apparent (bulk) density

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 σST 3.2 Drop hammer impact test piece maximum deceleration in the International System of Units (SI), and with m/s2 representation. 3.3 Curve shows that during the impact because of the time factor, by the impact of displacement of the test piece surface (see Appendix A). 3.4 Drop hammer test piece deceleration force applied divided by the original area of \u200b\u200bthe test piece. 3.5 Hammer hammer mass times the speed of instant reduction. GB/T 18943-2008/ISO 4651. 1988

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