1 Scope
This Standard specifies classification, requirement, test method, inspection rules, marking, packaging, transportation and storage of general flexible polyether polyurethane cellular plastics.
This Standard is applicable to blocky, flaky and strip flexible polyether polyurethane cellular plastics, and ones cut to the shapes above.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, the parties whose enter into agreement according to this Standard are encouraged to research whether the latest editions hereof are applied or not. For undated references, the latest edition of the normative document referred to 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 Flexible Cellular Polymeric Materials - 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)
GB/T 10807-2006 Flexible Cellular Polymeric Materials - Determination of Hardness (Indentation Technique) (ISO 2439: 1997, IDT)
GB/T 10808-2006 Flexible Cellular Polymeric Materials - Determination of Tear Strength (ISO 8067: 1989, IDT)
ISO 3385: 1989 Flexible Cellular Polymeric Materials - Determination of Fatigue By Constant-load Pounding
3 Classification
3.1 By 25% indentation hardness index, the products are classified to 8 classes, i.e., 245N, 196N, 151N, 120N, 93N, 67N, 40N and 22N.
Foreword i
Introduction iii
1 Scope
2 Normative References
3 Classification
4 Requirements
5 Test Method
6 Inspection Rules
7 Marking, Packaging, Transportation and Storage
Annex A (Informative) Category, Applicable Type and Application Field of Indentation Property
