CMA qualification for paint testing

After more than 50 years of development and growth, Zhongke Testing, a coating testing institution, has become a large third-party analysis and testing technology service institution in Guangdong Province. It has the qualification for scientific research achievement testing recognized by Guangdong Province and is responsible for the construction of a shared service platform for analysis and testing resources in the chemical and chemical industry. It has received support from the National Innovation Fund and is a testing unit of the Guangdong Provincial Hazardous Chemicals Registration Office.

At the end of 2001, the paint testing agency issued mandatory national standards, which clearly stipulated the limit values of harmful elements such as formaldehyde, volatile organic compounds (VOCs), benzene, toluene and xylene, ammonia, free toluene diisocyanate (TDI), vinyl chloride monomer, styrene monomer, soluble lead, cadmium, chromium, mercury, arsenic, and radioactive nuclides in building materials for 9 types of indoor decoration and renovation materials. It was also stipulated that from July 1, 2002, the production and sale of decoration and renovation materials and building material products that did not meet the standards were prohibited.

So what are the paint testing items?

Zhongke Testing can test physical and chemical properties, electrical properties, mechanical properties, aging properties, etc., as follows:

Physical and chemical properties: appearance and transparency, color, luster, color difference, viscosity, flow time, fineness, non-volatile matter content, covering power, drying time, hardness, flexibility, wear resistance, hardness, flash point, acid value, paint base saponification value, density, storage stability, brushing performance, scrub resistance, tolowFilm formation temperature, gelation time, glass transition temperature, water absorption rate, moisture content, whitening properties, particle size distribution, flowability, molecular weight and molecular weight distribution, MEQ value, contrast ratio, etc.

Electrical properties: resistivity, breakdown strength, volume resistance and surface resistance, volume resistance and surface resistance, electrophoretic paint conductivity, Coulomb efficiency, electrophoretic paint penetration, etc.

Mechanical properties: adhesion, bending test, tensile performance, bonding strength, tear strength, Buchholz indentation test, scratch resistance, palletizing resistance, cupping test, T-bend, stone impact resistance, etc.

Aging performance: heat resistance, low temperature resistance, moisture and heat resistance, liquid medium resistance, stain resistance, coating freeze-thaw cycle resistance, etc.

Component analysis: By using qualitative and quantitative analysis methods, it is possible to accurately analyze the composition, element content, and filler content of coatings and paints.

Chemical properties: wear resistance, acid and alkali resistance, gasoline and oil resistance, impact resistance, color bleeding resistance, water resistance, moisture and heat resistance, volatile oil resistance, pollution resistance, salt spray resistance, coating temperature denaturation resistance, stain resistance, scrub resistance, boiling water resistance, detergent resistance, solvent wiping resistance, etc.

Construction performance: testing coverage, usage, consumption, drying time (surface dry, actual dry), paint film polishing, leveling, sagging, paint film thickness (wet film thickness, dry film thickness), paint film heating test, grid test, etc.

Harmful substances: VOC, formaldehyde, benzene, toluene, xylene, free TDI, PAHs, ethylbenzene, total amount of xylene, free formaldehyde content, total TDI and HDI content, ethylene glycol ether, lead, mercury, chromium, cadmium, etc.

Electrical properties: conductivity, breakdown voltage or breakdown strength, insulation resistance, dielectric constant, dielectric loss.

Antibacterial and anti mold performance: antibacterial testing (for Escherichia coli, Candida albicans, etc.); Mold proof test.

Scope of paint testing

Coatings: architectural coatings, automotive coatings, fluorocarbon coatings, marine coatings, wood coatings, toy coatings, nitro coatings, waterproof coatings, phenolic resin coatings, fireproof coatings, decorative fireproof coatings, anti-corrosion coatings, powder coatings, electrophoretic coatings, coil board coatings, solvent based exterior wall coatings, water-soluble interior wall coatings, etc.

Paint categories: floor paint, insulation paint, electrophoretic paint, fluorocarbon paint, ship paint, wood paint, architectural paint, inorganic building coatings for exterior walls, vinyl chloride enamel paint, amino dried enamel paint, automotive topcoat/primer, etc.

Paint auxiliary materials: nitro paint thinner, paint drying agent, nitro paint moisture-proof agent, vinyl chloride paint moisture-proof agent, nitro paint moisture-proof agent, paint stripping agent, amino paint diluent, organic bentonite for paint, rare earth drying agent for paint, vinyl chloride paint thinner, etc.

Ink and putty: various types of ink testing, various types of ink and alkyd putty, epoxy ester putty, epoxy ester putty, nitro putty, vinyl chloride putty and other types of putty testing.

For more questions related to paint testing, please click on the online consultation on the right. Zhongke Testing customer service will assign corresponding engineers to provide you with more professional consultation.