In the mid-1990s, China announced the GB5020794 national standard for "Technical Specifications for Roofing Engineering", which clearly defined the quality requirements, construction methods and engineering acceptance of different types of waterproof coatings. The development has played a positive role. However, there is no mandatory standard for waterproof coatings, and the market is confusing and needs further regulation.
In the decoration of the kitchen and the bathroom, waterproofing is a necessary procedure, and in the ten mandatory national standards, there is no standard for the restriction of harmful substances in waterproof coatings. Therefore, it is necessary to further strengthen management during home decoration.
Some homes found that the bathroom and the kitchen smelled relatively large. After testing, the inspection center found that the pollution was mainly caused by waterproof coating, and the pollution was not easy to remove.
Currently, there are two major categories of waterproof materials on the market:
One type is a polyurethane waterproof coating.
These materials are generally made of polyurethane and coal tar as raw materials. The volatilized oil and gas are highly toxic and difficult to remove. Therefore, they were banned in China in 2000.
The polyurethane waterproof coating that is still on sale uses asphalt instead of coal tar as a raw material. However, when such a coating material is used, it is generally diluted with an organic solvent such as toluene or xylene, and thus contains toxicity.
The other type is a polymer cement based waterproof coating.
It consists of an emulsion of a variety of water-based polymers and a high-quality cement mixed with various additives. The flexibility of the polymer (resin) is integrated with the rigidity of the cement, making it excellent in impermeability and stability.
Its advantages are convenient construction, low comprehensive cost, short construction period, and non-toxic and environmental protection.
Therefore, polymer cement base has become the protagonist of the waterproof coating market.
Expert reminder:
Some decoration companies and consumers mistakenly believe that the indoor waterproofing treatment area is not very large, and there are cement and ceramic tiles on the inside, which is not easy to cause pollution.
In fact, because the indoor waterproof layer generally has to reach a certain thickness before it can have the corresponding waterproof function, the use of the material is relatively large. Once the waterproof coating containing the pollutants is used in the waterproof construction, the indoor environment pollution will be caused for a long time.
At present, the pollution of waterproof coatings for controlling interior decoration and decoration mainly needs to be controlled from the materials used. Non-toxic and environmentally friendly waterproof coatings should be preferred.
At present, there are acrylate waterproof coatings and tar-free polyurethane waterproof materials on the market, which have been proved to be non-toxic and tasteless environmentally friendly products. The indoor floor treated with such waterproof coatings can meet the requirements of indoor environmental protection.
Consumers should choose materials from reputable markets and choose qualified home improvement companies for construction. During the decoration process, as long as it is a place where the water environment is frequently present, such as kitchens and bathrooms, it should be waterproofed. The use of waterproof coatings is not only related to the overall effect of residential decoration, but also closely related to the health of the residents. Waterproof treatment is a “concealed project†in the decoration, and its effect will only be presented after a long period of use.
If the waterproof coating contains toxicity, it will become an invisible killer in the home. Therefore, the choice of waterproof materials can not be ignored.
Solvent Red,Basic Dyestuff,Solvent Red
Tianjin Zhaobo Chemical Co., Ltd. , http://www.tjaciddyes.com