Guangdong Quality Supervision Bureau sampling waterproof coating qualification rate 78.1%

On the 6th, the Guangdong Provincial Bureau of Quality and Technical Supervision announced that 15 products such as rubber and plastics machinery regularly supervised and inspected the quality of the products, of which the sampling batch acceptance rate of waterproof coating products was 78.1%.

The quality inspection rate of 78.1% of the waterproof construction coatings sampled by Guangdong Quality Supervision Bureau was examined. 32 batches of waterproof coating products produced by 28 companies in 8 cities (districts) including Guangzhou, Shenzhen, Jiangmen, Zhanjiang, Maoming, Zhongshan, Dongguan and Shunde were examined. , Based on JC1066-2008 "Limits for Harmful Substances in Building Waterproof Coatings", GB/T19250-2003 "Polyurethane Waterproof Coatings", GB/T23445-2009 "Polymer Cement Waterproof Coatings", JC/T408-2005 "Water Emulsified Bituminous Waterproofing Coatings, JC/T674-1997 "PVC Elastomeric Waterproof Coating", JC/T852-1999 "Solvent Based Rubber Bitumen Waterproof Coating", JC/T864-2008 "Polymer Emulsion Building Waterproof Coating" and Products Expressed Technical Specifications In accordance with the requirements, 20 items such as volatile organic compounds (VOC), free formaldehyde, and tensile strength of waterproof coating products were examined.

After inspection, 25 batches passed, and the sampling batch pass rate was 78.1%. The unqualified items are mainly harmful substances (free formaldehyde, ammonia, toluene + ethylbenzene + xylene, hydrazine, naphthalene, free TDI).

Excessive harmful substances can harm consumers' human health. The main reasons for the failure: First, some manufacturing companies have poor quality assurance capabilities, and they do not have the ability to detect harmful substances (free formaldehyde, ammonia, toluene + ethylbenzene + xylene, hydrazine, naphthalene, free TDI), nor do they have products. Send qualified testing organizations to carry out testing; Second, some companies do not attach importance to product design and development, product formula is irrational; Third, some companies use cheap raw materials in order to reduce costs.

For the quality problems found in this inspection, the Guangdong Provincial Bureau of Quality and Technical Supervision conducted post-processing work in accordance with the provisions of relevant laws and regulations.