ISO 1887-2014 pdf free.Textile glass – Determination of combustible-matter content.
ISO 1887 specifies a method for the determination of the combustible-matter content of products made from textile glass, such as continuous-filament yarns, staple-fibre yarns, rovings, chopped strands, milled fibres, fabrics, chopped-strand and continuous-filament mats, and other glass reinforcements.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1 combustible-matter content
ratio of the mass of material removed on calcination from a dried textile glass product to the mass of the dried product
Note 1 to entry: This ratio is expressed as a percentage in this International Standard. It is equal to the content of size or finish on the textile glass product when the size or finish is completely combustible without significant residue (i.e. primarily organic products).
3 Principle
Test specimens. dried under prescribed conditions, are weighed before and after calcination at a temperature of 625 °C ± 20 °C or, with types of glass which are unstable at this temperature, at a temperature between 500 °C and 600 °C, also kept constant to within 20 °C.
4 Apparatus
4.1 Air-circulation oven, for drying specimens, capable of being maintained at 105 °C ± S °C or the chosen drying temperature and maintained to within ±5 °C (see 3).
4.2 Muffle furnace, capable of being maintained, with a tolerance of ±20 °C, at any desired temperature up to 625 °C, the temperature being measured at the centre of the muffle furnace with the door closed.
4.3 Desiccator, containing a suitable desiccant, for example silica gel, calcium chloride, phosphorous(V) oxide.
4.4 Specimen holder, made from a material stable at the test temperature, allowing the best possible air circulation around the test specimen and designed to prevent loss of material. The holder may be a porcelain crucible, a basket made of stainless-steel gauze, etc.
4.5 Stainless-steel tongs, for handling test specimens and holders.
4.6 Balance, accurate to 0,1 mg.
4.7 Polished-metal templates, for the preparation of test specimens.
4.8 Suitable cutting tool, for cutting mat or fabric, for example a knife, scissors, or a cutting disc.
4.9 Suitable wrap.reel, for taking yarn and roving test specimens.
5 Test specimens
5.1 Selection of test specimens
Unless stated to the contrary in the product specification or by the person requesting the test, the test specimens shall be selected as specified in 511 to SIA.
5.1.1 Yarns and rovings
Table 1 gives the length of yarn to be taken as a function of the linear density of the yarn. The test specimen shall not be unduly compressed, in order to ensure that the air will circulate as freely as possible and that drying and calcination will therefore be complete.ISO 1887 pdf free download.
Tags: Textile glass
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