GB/T 31973-2015 Natural weathering exposure tests for automotive non-metallic materials and parts

GB/T 8807 GB/T 3511-2001 Rubber, vulcanized and thermoplastic—The test method of resistance to direct natural weathering GB/T 3511-2008 Rubber, vulcanized or thermoplastic—Resistance to weathering GB/T 3511-2018 Rubber,vulcanized or thermoplastic—Resistance to weathering GB/T 3681-2000 Plastics—Test method of exposure to weathering GB/T 3681-2011 Plastics—Methods of exposure to direct weathering,to weathering using glass-filtered daylight,and to intensified weathering by daylight using Fresnel mirrors GB/T 3681.1-2021 Plastics—Methods of exposure to solar radiation—Part 1:General guidance GB/T 3681.2-2021 Plastics—Methods of exposure to solar radiation—Part 2:Direct weathering and exposure behind window glass GB/T 6739-1996 Determination of film hardness by pencil test GB/T 6739-2006 Paints and varnishes—Determination of film hardness by pencil test GB/T 6739-2022 Paints and varnishes—Determination of film hardness by pencil test GB/T 9286-1998 Paints and varnishes—Cross cut test for films GB/T 9286-2021 Paints and varnishes—Cross-cut test GB/T 9754-1988 Paints and varnishes—Measurement of specular gloss of non-metallic paint films at 20°, 60°and 85° GB/T 9754-2007 Paints and varnishes—Determination of specular gloss of non-metallic paint films at 20°,60°and 85° GB/T 11186.1-1989 Methods for measuring the color of paint films—Part 1:Principles GB/T 11186.2-1989 Methods for measuring the color of paint films—Part 2:Colour measurement GB/T 11186.3-1989 Methods for measuring the color of paint films—Part 3:Calculation of color differences GB/T 15596-1995 Plastics—Determination of changes in Color and variations in properties after exposure to daylight under glass, natural weathering or artificial light GB/T 15596-2009 Plastics—Determination of changes in colour and variations in properties after exposure to daylight under glass,natural weathering or laboratory light sources GB/T 15596-2021 Plastics—Determination of changes in colour and variations in properties after exposure to glass-filtered solar radiation, natural weathering or laboratory radiation sources GB/T 9754-2025 Paints and varnishes—Determination of gloss value at 20°、60° and 85° GB/T 11186-2025 Methods for measuring the colour of coatings