Three strokes winning environmental protection wooden building materials purchase

Identification of home decoration wooden building materials furniture is the first to go through the nose of the environment, take a piece of wood, smell in the edge of the groove (if the furniture smell furniture surface and inside the door), if more pungent, that the amount of formaldehyde released Higher is definitely not optional. However, it is not enough to pass the smell, but further identification depends on the visual.

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Method One: See Certification

For environmental protection wood, there must be a ten-ring certification mark for green building materials of the State Environmental Protection Administration. Wooden furniture requires certification from the China Quality Certification Center (CQC).

Method Two: Look at the report

Floor and furniture merchants need to provide inspection reports with CMS words at the provincial level or above. This is a sign after the national technical supervision department has passed the measurement certification. The inspection unit is only qualified to carry out the inspection through the measurement certification. Have legal effect. In addition, furniture must provide product specifications. At present, China's building materials manufacturers are basically based on the 10 standards for "limits of hazardous materials for interior decoration materials." This standard was implemented by the AQSIQ and other relevant departments on July 1, 2002. Special attention should be paid to the fact that the 10 compulsory standards are not equal to the “Green Ten Rings” certification, and it is only the bottom standard for market access. As long as it is a qualified product, it will surely pass. Consumers can visit the official website of the State Environmental Protection Administration or the Environmental Certification Center of the State Environmental Protection Administration to inquire about products that have obtained the “Ten Ring” certification mark.

Method 3: Look at the level

Waterproof material picks toughness. The purchase of waterproof material should be comprehensively investigated from the aspects of tensile strength, elongation at break, and impermeability. For waterproofing membranes, due to the tight connection between the application and the base layer, the stretching or cracking or deformation of the base layer directly affects or limits the use of the coil. Therefore, the waterproof membrane must have strong adaptability to the base layer. When purchasing a PVC waterproofing membrane, consumers can pull it by hand and feel that the higher the toughness of the web, the higher the tensile strength, the greater the elongation, and the better the adaptability to the base layer.

Adhesive pick green degree. The free formaldehyde content of the adhesive should be less than or equal to 1 g/kg, and the benzene content should be less than or equal to 5 g/kg. You can also use the "nose smell" method when you buy adhesives.

Wood-based panels to see the amount of formaldehyde released. "GB18580-2001 indoor decoration materials artificial wood and its products in the formaldehyde release limit" clearly stipulates that the product "should be marked with the product of formaldehyde emission limit signs." The standard specifies that the limit signs are “E0” and “E1” and can be used directly in the room; the sign “E2” must be treated after finish to be used indoors.

Strengthen the floor to pick up the wear resistance. In addition to seeing whether the amount of formaldehyde released is higher than the standard for the purchase of laminate flooring, it is more important to look at the number of wear-resistant revolutions. According to the National Quality Standard for Wood Flooring, the number of surface wear-resistant rotations of qualified wood flooring products should be above 6,000 rpm.

The toilet seat checks the depth of the water seal. The lack of water seal depth will reduce the deodorant ability of the toilet. This is because the exhaust gas in the water channel will escape through the unqualified water seal, which will cause environmental pollution and be harmful to human health. Toilet water seal should be more than 50mm.

Check the contrast ratio of latex paint. Latex paint contrast ratio is directly related to the hiding power of latex paint, while hiding power is directly linked to the beautification of the wall. The contrast ratio of latex paint should not be less than 0.90, otherwise its painting function will be greatly reduced. In addition, good quality latex paint can also delay the aging of the wall, such as the subtle cracks in the wall changes, mold and so on. The paint resistance of latex paint should reach 1000 times.

Water nozzle check water performance. According to Beijing local standards, under the dynamic pressure of 0.1 MPa, the flow rate of water from the spout should be no more than 0.15 L/s. Since the flow of the spout is difficult to see with the naked eye, it is necessary to issue a quality inspection report at the time of purchase.

Wood paint check harmful substances. Wood lacquer must meet the "GB18581-2001 interior decoration materials solvent-based wood coatings in hazardous substances limit." At the time of purchase, the seller may be required to provide a qualified environmental protection test report issued by a qualified unit. The soluble lead standard value of wood coatings should not exceed 90 mg/kg, and the benzene content should not exceed 0.5%.

Indoor air quality standards. China's highest allowable concentration of indoor harmful gases is 0. 08mg/m 3, ammonia is 0.5mg/m 3, and helium is 100～200Bq/m 3.

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