Plastics. Methods of exposure to direct weathering, to weathering using glass-filtered daylight, and to intensified weathering by daylight using Fresnel mirrors.— 34 стр.
Methods of testing plastics. Sampling and test specimen preparation, Preparation of test specimens of amorphous thermoplastics in the form of bars with a specified reversion— 12 стр.
Methods of testing plastics. Optical and colour properties, weathering, Determination of changes in colour and variations in properties after exposure to daylight under glass, natural weathering or laboratory light sources— 20 стр.
Methods of testing plastics. Optical and colour properties, weathering, Determination of resistance to change upon exposure under glass to daylight— 12 стр.
