With the innovation and progress of science and technology, more and more decoration materials have entered our field of vision. For a wide variety of decoration materials, how to choose the most environmentally friendly, today we will talk about it.
Decoration pollutants mainly include the following aspects:
1. Coatings
The paints, coatings, waterproofing materials used in house decoration, as well as the additives and thinners of various paints and coatings contain harmful substances such as VOCs and heavy metal substances.
1. How to choose environmentally friendly latex paint, mainly depends on the VOC content, national standard: VOC 120G L. Low-VOC and zero-VOC coatings are the first choice for green coatings. Low-VOC paints are defined as VOCs of less than 30 g L, while zero-VOC paints are defined as VOCs of less than 1 g L.
2. How to choose environmentally friendly waterproof coatings.
1).VOC Limit Standards.
According to the national standard, VOC 70g L in waterproof coatings.
2).Heavy Metal Restriction Standards.
In the production process of waterproof coatings, some heavy metal substances such as lead, mercury, cadmium, etc. may be used. These heavy metal substances are toxic and can cause harm to human health and the environment. Therefore, the state stipulates that the content of heavy metal substances in waterproof coatings should also be subject to certain restrictions. According to the national standard, the content of lead in waterproof coatings shall not exceed 90mg kg, and the content of mercury and cadmium shall not exceed 1mg kg.
Second, the plate
Artificial decoration boards that do not meet environmental protection standards contain formaldehyde that exceeds the standard, such as large core board (blockboard), plywood, fiberboard, particleboard, as well as laminate flooring and furniture made from these boards. Formaldehyde mainly comes from the urea-formaldehyde resin glue used in the production of composite panels, which has the characteristics of high adhesive strength and is not easy to open, and is a commonly used adhesive for the production of various composite panels. Urea-formaldehyde resin glue contains formaldehyde, which will form free formaldehyde gas and release it into the air, and formaldehyde is a highly toxic substance.
The environmental protection level of the plate usually follows the following standards:
E1 level: This is the current minimum environmental protection standard in China, and the formaldehyde emission should be less than or equal to 0124 mg per cubic meter. E1 grade panels are suitable for interior decoration, but it should be noted that even if the E1 grade is reached, the indoor air quality standard is not guaranteed.
E0 level: Compared with E1 level, E0 level has a lower formaldehyde emission level, less than or equal to 0050 mg per cubic meter. Although E0 grade is considered a more environmentally friendly option, it is not a mandatory standard in China, but rather a recommended international implementation standard.
ENF grade: This is a new type of environmental protection grade, and the formaldehyde emission is extremely low, less than or equal to 0025 mg per cubic meter. ENF grade sheets are called formaldehyde-free because they are produced without the addition of formaldehyde-containing ingredients, including adhesives.
F Stars: This is the standard in Japan and is divided into F1 stars, F2 stars, F3 stars, and F4 stars. In China, F4 is equivalent to E0, F3 is equivalent to E1, F2 is E2, and F1 is lower than E2.
To sum up, you can choose a plate above E1, and if you pursue a higher standard of environmental protection, you can consider ENF or other boards with a higher star. When choosing, you should pay attention to check the environmental protection test report and relevant certifications of the product to ensure that the purchased plate meets the corresponding environmental protection level standards.
3. Cement
Building materials such as cement mainly contain ammonia, a harmful substance. Ammonia is a colorless gas with a strong pungent odor and is an alkaline substance that is lighter than air (equivalent to an air density of 0.).5971), the lowest perceptible level is 376mg/m³。Ammonia gas has a very high solubility, so it is often adsorbed on the ** mucous membrane and eye conjunctiva, resulting in irritation and inflammation. It has a corrosive and irritating effect on the tissues it comes into contact with. It can absorb water from tissues, denature tissue proteins, and saponify tissue fats, destroying cell membrane structures. The national standard requires that the amount of ammonia released is less than 01%。
Fourth, stone
Stone decoration materials such as granite, marble, gypsum, tiles, etc., contain a harmful substance called radon. Radon is one of the 19 environmental carcinogens declared by the World Health Organization, and it is the second cause of lung cancer after smoking**. The radioactive limits are classified into Class A, Class B, Class C, and the environmental protection level is Class A higher than Class B, and Class B higher than Class C.
To sum up, in the process of decoration material selection, whether the decoration materials are environmentally friendly, we can not only listen to the words of the business, we must understand the standards of environmental protection, in order to choose good environmental protection materials.