[ Chinese wardrobe network ] Some people in the industry are reluctant to talk about formaldehyde, because changing the formaldehyde problem means giving up cheaper adhesives and increasing production costs. In addition, the overall added value of China's wood-based panel industry is not high, and the competition is fierce. Therefore, only a few large enterprises in the industry are using formaldehyde-free adhesives to produce low aldehyde boards or aldehyde-free boards. Why do ordinary wood-based panels release formaldehyde first to look at the structural composition: ordinary artificial board = wood scrap material + urea-formaldehyde resin urea-formaldehyde resin is directly formed from urea and formaldehyde, and is widely used in the manufacture of wood-based panels. At present, most of the adhesives used in China's wood-based panels are urea-formaldehyde resins with formaldehyde as the main component. The residual and non-reactive formaldehyde in the plates will gradually release to the surrounding environment, forming a major source of formaldehyde pollution. So what is formaldehyde? Formaldehyde is a colorless, highly irritating odor. Soluble in water, alcohol and ether. Formaldehyde is gaseous at normal temperature and usually appears as an aqueous solution. Soluble in water and ethanol, 35-40% aqueous formaldehyde solution is called formalin. A portion of the formaldehyde escapes during evaporation, but most of it becomes paraformaldehyde. It can be miscible with organic solvents such as water, ethanol and acetone. Therefore, due to the chemical instability of the urea-formaldehyde resin, it will continue to decompose and release the formaldehyde. So how do you do not release formaldehyde from the board? The use of MDI eco-adhesive is a good choice MDI is a widely used frontier polymer synthesis raw material. MDI is a general term for diphenylmethane diisocyanate (pure MDI), a mixture containing a certain proportion of pure MDI and polyphenylpolymethylene polyisocyanate (polymeric MDI), and a modification of pure MDI and polymeric MDI. The most important raw material, a small amount of MDI is applied to other aspects than polyurethane. Polyurethane has the elasticity of rubber, plastic strength and excellent processing properties, especially in the aspects of heat insulation, sound insulation, abrasion resistance, oil resistance, elasticity, etc. It is incomparable with other synthetic materials. It is followed by polyethylene and polychlorinated chlorine. The sixth largest plastics after ethylene, polypropylene, polystyrene and ABS have been widely used in national defense, aerospace, light industry, chemical, petroleum, textile, transportation, automobile, medical and other fields, and become indispensable for economic development and people's life. Emerging materials. Because of its excellent safety and stability, it is also used in the fields of medical and daily necessities such as artificial blood vessels, heart valves, refrigerator liners, and Lycra fibers. MDI ecological adhesives replace urea-formaldehyde resins. It is a kind of downstream product of MDI, used in building materials and made into various plates. The benefits of using MDI eco-adhesive to make it into a plate are obvious. It not only solves the excessive development of forest resources, but also is expected to develop into the most market potential and industrialization because it does not contain formaldehyde and is beneficial to people's home health. Prospective products. Extended reading: Five testing methods to check whether the formaldehyde in the home exceeds the standard is the key to reduce the release of formaldehyde in the plate. At present, the most stringent formaldehyde content in the world is Japan, and the highest standard requires that the formaldehyde emission should not exceed 0.3 mg. Wang Zheng suggested that the standards adopted for formaldehyde determination in China should be revised. Taking formaldehyde release as an example, it is not enough to have the level of release standards for plates. It is also necessary to consider the amount of these plates used in the living room, that is, the loading index, which limits the amount of high formaldehyde-exposed wood-based panel products used in the living room. Guarantee the air quality in the room. From the perspective of human settlements, life safety and the interests of consumers, we will establish a higher level of formaldehyde emission standards that can guarantee the unlimited use of plates in the living space, so that low aldehyde and aldehyde-free plates occupy market space. Artificial boards are better able to enter the international market. Although high standards will bring pain to some enterprises, if the problem of formaldehyde is solved, the prospects of the wood-based panel industry will become more and more broad. We will continue to adhere to the tenet of "high-quality products, high-quality life", and welcome friends from all over the world to negotiate business with customers or visit in person for guidance. We sincerely look forward to establishing friendly and cooperative business partnership with customers at home and abroad on the basis of equality and mutual benefit!We are manufacturer of 12 Sets Baby Care Products in China, if you want to buy Twelve-Piece Baby Nail Art Set,New Baby Health And Beauty Kit,Baby Skin Care Natural Product please contact us. 12 Sets Baby Care Products,Twelve-Piece Baby Nail Art Set,New Baby Health And Beauty Kit,Baby Skin Care Natural Product Dongguan Junkai Packaging Products Co., Ltd , https://www.diystoragecase.com