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Engineered wood products are a major source of formaldehyde in indoor air. While the raw wood itself contains negligible trace amounts of formaldehyde, the main culprit is the adhesives added during production. Data shows that my country has long been the world's largest producer of engineered wood products and wood adhesives. Below is a detailed introduction to adhesives.
Most commercially available boards use urea-formaldehyde resin, which, as the name suggests, contains formaldehyde. Therefore, the type of adhesive is crucial for manufacturing environmentally friendly boards. By adjusting the adhesive formula and the amount of formaldehyde added, boards can meet national standards of E1 or even E0.
So what kind of adhesive is used in more environmentally friendly boards? It's MDI adhesive.
Q: What is MDI adhesive?
MDI is a general term for diphenylmethane diisocyanate, mixtures containing a certain proportion of pure MDI and polyphenylmethylene polyisocyanate, and modified products of pure MDI and polymeric MDI. MDI adhesives refer to a type of downstream product of MDI, used in the manufacture of various boards.
MDI is the most important raw material for the production of polyurethane, with small amounts used in other applications besides polyurethane. Using MDI adhesives to make boards, which are formaldehyde-free and beneficial to home health, is expected to become a product with the greatest market potential and industrialization prospects.
Q: Where can I find good MDI adhesive?
first
MDI glue contains no formaldehyde, and the environmental performance of the boards is comparable to that of solid wood.
Secondly
MDI has high bonding strength, which effectively improves the internal bond strength and static bending strength of the board.
Then
MDI adhesive is insoluble in water and separates when it comes into contact with water, which provides a certain degree of moisture protection for the resulting boards. The boards can be used in kitchens and bathrooms, and can also be used as outdoor materials.
at last
MDI raw materials are highly stable and safe, and are widely used in fields closely related to people's livelihoods and medical care, including Lycra fibers for clothing, refrigerator liners, and even artificial organs implanted in the human body, such as artificial blood vessels and heart valves.
What we should cherish most is not wealth and fame, but a peaceful and healthy life. When choosing building materials, it's essential to select healthy, environmentally friendly materials that truly protect the health of your family. Happy Bear Building Materials are dedicated to protecting your health.