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Shenzhen Northtest Testing Technology Co., Ltd. Northtest group Third party certification body

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Hot Line 400-800-6106
Northtest group · headquarters
Tel:0755-36995505 Q Q: Email:ntek@ntek.org.cn Blocks B, C and E of Fenda Science and Technology Creative Park, Xixiang, Baoan District, Shenzhen

Paint test

Basic introduction

The professional testing team of Beitest can provide you with multi-faceted coating testing services, help you to avoid the possible losses caused by the wrong selection of materials, and provide clear directions and suggestions for material improvement. At the same time, it can also be used to monitor the quality of factory production.

Service background

Materials coated on the surface of an object that can adhere well to the base material and form a complete and tough protective film are called coatings. In fact, paint and paint are the same concept. Paint is a customary name that people have been using for a long time. After it was introduced into China, we used it as an industry term. At present, the entire architectural coatings market continues to grow, and the entire industry is in the process of continuous upgrading. It has become a trend to produce higher value-added products with better quality and stricter environmental standards. Environmental protection and health are the biggest concerns for coatings point.
The professional testing team of Beitest can provide you with multi-faceted coating testing services, help you to avoid the possible losses caused by the wrong selection of materials, and provide clear directions and suggestions for material improvement. At the same time, it can also be used to monitor the quality of factory production.

Test items

Harmful substance content, low temperature flexibility, water impermeability, tensile test, low temperature bendability, heat expansion and contraction, surface drying time, hard drying time, solid content
standard test
GB 23445-2009, GB 16777-2008, JC / T 864-2008, JC / T 2090-2011, GB 18581, GB 18582
Applicable Products
Building materials and coatings

Test content

Harmful substance content
1. Test principle: determine the content of volatile organic compounds, benzene, toluene, ethylbenzene, xylene, TDI, HDI, methanol, halogenated hydrocarbons, heavy metals and other harmful substances in coatings or coated products.
2. Test standard: GB 18581, GB 18582, GB 23445-2009 (Section 5)
Low temperature flexibility
1. Test principle: The sample is bent after a period of low temperature treatment, and the sample is cracked from a certain angle.
2. Test standards: GB 16777-2008 (Section 13.2), C / T 864-2008 (Section 5.4.4)
Impervious
1. Test principle: Place the sample in a specific device and apply a specific pressure at a certain time, and watch whether the sample leaks.
2. Test standards: GB 23445-2009 (Section 6.2), GB 16777-2008 (Section 15), JC / T 864-2008 (Section 5.4.5), JC / T 2090-2011 (Section 7.6)
Low-temperature bendability
1. Test principle: After the sample is processed for a period of time, it is bent at a specific temperature of 90 degrees to observe the appearance of the sample.
2. Test standards: GB 23445-2009 (Section 6.2), GB 16777-2008 (Section 14.2), JC / T 2090-2011 (Section 7.7.2)
Tensile test
1. Test principle: Draw the specimen until it breaks, and measure its tensile strength.
2. Test standards: GB 23445-2009 (Section 6.2), GB 16777-2008 (Section 9.2), JC / T 864-2008 (Section 5.4.3)
Heating expansion ratio
1. Test principle: Heat the sample and measure the change rate of the dimensions before and after heating.
2. Test standards: GB 16777-2008 (Section 12), JC / T 864-2008 (Section 5.5.8)
Surface dry time
1. Test principle: Apply the paint to the aluminum plate, and record the time when the finger touches the coating without sticking the paint.
2. Test standards: GB 16777-2008 (Section 16.2.1), JC / T 864-2008 (Section 5.7.1), JC / T 2090-2011 (Section 7.4)
Hard-working time
1. Test principle: Apply the coating to an aluminum plate, and record the time when the coating is cut with a knife, and there is no finger on the bottom layer and the film.
2. Test standards: GB 16777-2008 (Section 16.2.2), JC / T 864-2008 (Section 5.7.2), JC / T 2090-2011 (Section 7.4)
Solid content
1. Test principle: After heating the material, certain substances will be volatilized, and the rest is solid content.
2. Test standards: GB 23445-2009 (Section 6.2), GB 16777-2008 (Section 5), JC / T 864-2008 (Section 5.4.6)

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