ISO 3251:2019 色漆、清漆和塑料 非挥发性物质含量的测定

标准编号：ISO 3251:2019

中文名称：色漆、清漆和塑料 非挥发性物质含量的测定

英文名称：Paints, varnishes and plastics — Determination of non-volatile-matter content

发布日期：2019-05

标准范围

This document 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, film-forming agents).
NOTE 1 The non-volatile-matter content of a product is not an absolute quantity but depends upon the 
temperature and period of heating used for the determination. Consequently, when using this method, only 
relative and not true values for non-volatile-matter content are obtained owing to solvent retention, thermal 
decomposition and evaporation of low molecular mass constituents. The method is therefore primarily intended 
for testing different batches of the same type of product.
NOTE 2 This method is suitable for synthetic rubber lattices, provided heating for a specific period of time is 
considered appropriate (ISO 124 specifies heating until the loss in mass of a 2 g test portion following successive 
periods of heating is less than 0,5 mg).
NOTE 3 In-house methods for determining non-volatile matter often include drying with infrared or 
microwave radiation. Standardization of such methods is not possible, since they are not generally applicable. 
Several polymer compositions tend to decompose during such treatment and therefore give incorrect results.

标准预览图