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The "Radiant Tool" of Cars

In this era where appearance dominates, the attractiveness of a product's appearance largely influences its sales, and this is also true in the automotive industry. Automakers have never stopped on their relentless pursuit of beauty. The key to affecting the appearance of a car is not only its exquisite exterior design, but also its crucial coatings.

It can be said that without those colorful coatings, it is difficult for cars to attract our attention in the first place. As a result, many people describe car coatings as the "shining weapon" of cars. Specifically, automotive coatings refer to coatings applied to various types of vehicle bodies and components, including new car coatings and auxiliary materials, as well as vehicle repair coatings. Based on performance differences, coatings can provide multiple benefits such as corrosion resistance, extended service life, and improved appearance for the body and components. However, at the same time, coating products often contain various heavy metals, harmful solvents, and harmful components such as VOCs. Once these substances exceed the standard, they will cause great harm to human health and the environment, including benzene.

Potential "hazard factors" in coatings

Benzene compounds are commonly present in coatings and various organic solvents. Benzene, toluene, and other substances are colorless and have a special aromatic odor, hence they are called "aroma killers". Benzene compounds have been recognized by the World Health organization as strong carcinogens. If a person inhales high concentrations of toluene and xylene in a short period of time, they may experience symptoms of central nervous system anesthesia, ranging from dizziness, headache, nausea, chest tightness, fatigue, and blurred consciousness to coma, and even respiratory and circulatory failure leading to death. Benzene mainly has irritating effects on the skin, eyes, and upper respiratory tract. Frequent exposure to benzene may cause the skin to become dry, flaky, and even allergic eczema due to defatting.

Limit standards for harmful substances in coatings

On June 1, 2010, the highly anticipated mandatory standard for the automotive industry, the "Limit of Harmful Substances in Automotive Coatings" (GB 24409-2009), was officially implemented, which means that there is a clear basis for limiting toxic and harmful substances in automotive coatings. This standard applies to automotive coatings other than putty and special functional coatings.

According to GB 24409-2009 standard, automotive coatings are divided into two categories:

Class A: Solvent based coatings, including thermoplastic, single component cross-linked, and two-component cross-linked;

Class B: water-based (including electrophoretic coatings), powder and UV curable coatings.

Standard interpretation

This standard specifies the requirements, test methods, inspection rules, packaging marks, and other contents for the allowable limits of harmful substances to human health and the environment in original factory coatings, repair coatings, and component coatings for passenger cars, commercial vehicles, trailers, and automotive trains. It is also suitable for automotive coatings other than putty and special functional coatings.

PONY prompt

As an automotive inspection agency, PONY Puni Testing Group reminds automotive coating manufacturers and users to closely monitor the content of toxic and harmful substances in such products to prevent market risks caused by products not meeting standard requirements. PONY Puni Testing Group, with its technological advantages in the field of automotive testing, can provide enterprises with solutions for controlling toxic and harmful substances in automotive products.