ChinaAutoRegs｜GB/T 1725-2007 英文版/English/翻译/色漆、清漆和塑料 不挥发物含量的测定
Paints varnishes and plastics— Determination of non-volatile-matter content

1 Scope

This Standard specifies a method for determining the non-volatile-matter content by mass of paints, varnishes, binders for paints and varnishes, polymer dispersions and condensation resins such as phenolic resins (resols, novolak solutions, etc.).
The method is also applicable to formulated dispersions containing fillers, pigments and other auxiliaries (e.g. thickeners and film-forming agents). For the method to be usable for unplasticized polymer dispersions and rubber latices, the non-volatile residue (which consists essentially of the polymeric material and of small quantities of auxiliaries such as emulsifiers, protective colloids, stabilizers, solvents added as film-forming agents and – especially for rubber latex concentrate – preserving agents) has to be chemically stable under the test conditions. For plasticized samples, the residue, by definition, normally includes the plasticizer.
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ISO 3233:1998, Paints and varnishes – Determination of percentage volume of non-volatile matter by measuring the density of a dried coating, specifies a method for determining the volume of non-volatile matter in paints, varnishes and related products.

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 6753.4-1998 Paints and varnishes–Determination of flow time by use of flow cups (eqv ISO 2431: 1993)
GB/T 8298-2001 Natural rubber latex concentrate–Determination of total solids content (eqv ISO 124: 1997, Latex, rubber— Determination of total solids content)
GB/T 20777-2006 Paints and varnishes – Examination and preparation of samples for testing (ISO 1513: 1992, IDT)
ISO 123: 2001, Rubber latex— Sampling

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