ChinaAutoRegs｜GB/T 9753-2007 英文版/English/翻译/色漆和清漆 杯突试验
Paints and Varnishes—Cupping Test
1 Scope
This Standard specifies an empirical method for assessing the resistance of a coating of paint, varnish or related product to cracking or detachment from a metal substrate when subjected to gradual deformation by indentation under standard conditions.
This Standard applies to single coat system or multi-coat system. For a multi-coat system, each coat may be tested separately or the complete system may be tested.
The method may be carried out as follows:
— either as a “pass/fail” test, by testing to a specified depth of indentation to assess compliance with a particular requirement;
— or by gradually increasing the depth of indentation to determine the minimum depth at which the coating cracks and/or becomes detached from the substrate.
2 Normative references
The following normative documents contain provision which, through reference in this text, constitute provisions of this Standard. For dated reference, subsequent amendments to, or revisions of, any of these publications (excluding corrigenda) do not apply. However, parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent editions of the Standards indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 3186-2006 Paints varnishes and raw materials for paints and varnishes – Sampling (ISO 15528:2000, IDT)
GB/T 9271 Paints and varnishes standard panels for testing (GB/T 9271-1988, eqv ISO 1514: 1984)
GB/T 13452.2 Paints and varnishes – Determination of film thickness (GB/T 13452.2-1992, eqv ISO 2808: 1974)
GB/T 20777-2006 Paints and varnishes – Examination and preparation of samples for testing (ISO 1513: 1992, IDT)
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