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MDI glue. The Chinese name is diphenylmethane diisocyanate.
MDI is a general term for diphenylmethane diisocyanate, a mixture of pure MDI and polyphenyl polymethylene polyisocyanate containing a certain proportion, and a modified substance of pure MDI and polymeric MDI.
MDI is the production of polyurethane.
The most important raw material, a small amount of MDI, is used in applications other than polyurethane. It is made into sheets using MDI ecological adhesives.
It not only solves the over-exploitation of forest resources, but also because it does not contain formaldehyde, which is conducive to people's home health, and is expected to develop into a product with the most market development potential and industrialization prospects.
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The corresponding Chinese name of MDI adhesive pair is isocyanbaiate adhesive.
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MDI is a general term for glue, which is not formaldehyde-free, but an improved glue, and the formaldehyde content is relatively small, not that domestic businesses advertise that it does not contain formaldehyde.
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Isocyanate adhesives, big brand manufacturers use this.
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There are so many ordinary manufacturers that are really willing to use MDI? Only a well-known brand like Osborne is willing to do so.
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The formaldehyde content of MDI glue is very low, and it can basically be called formaldehyde-free.
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This glue is used for the plates of the millennium boat, which is very environmentally friendly.
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Those who can choose MDI glue are generally big brands, so you can rest assured.
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In other words, this kind of glue is more environmentally friendly, and a good plate is used with this glue, which does not contain any formaldehyde glue, which should be better.
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If I hadn't seen this news, I wouldn't have known what MDI glue was.
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You should be referring to polyurethane one-component MDI glue, polyurethane production is through the reaction of isocyanate (-NCO) and hydroxyl (-OH) or amino (-NH2). The isocyanate is generally provided with MDI and glue, that is, there is only MDI and no TDI in the system
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MDI Eco Adhesive is a type of MDI downstream product.
MDI adhesive is used in building materials to make various sheets.
MDI is a general term for diphenylmethane diisocyanate (pure MDI), a mixture containing a certain proportion of pure MDI and polyphenyl polymethylene polyisocyanate (polymerized MDI) and a modified substance of pure MDI and polymerized MDI, which is the most important raw material for the production of polyurethane, and a small amount of MDI is used in other aspects besides polyurethane. Polyurethane has the elasticity of rubber, the strength of plastic and excellent processing performance, especially in heat insulation, sound insulation, wear resistance, oil resistance, elasticity and other aspects of other synthetic materials can not be compared, is the sixth largest plastic after polyethylene, polyvinyl chloride, polypropylene, polystyrene and ABS, has been widely used in national defense, aerospace, light industry, chemical industry, petroleum, textile, transportation, automobile, medical and other fields.
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。MDI is a general term for diphenylmethane diisocyanate, a mixture of pure MDI and polyphenyl polymethylene polyisocyanate containing a certain proportion, and a modified substance of pure MDI and polymeric MDI. MDI adhesive, also known as MDI ecological adhesive, refers to a type of MDI downstream product used to manufacture various sheets.
Physical properties of MDI glue: 1. Pure MDI: white to yellowish crystals at room temperature, storage temperature below 5 degrees, shelf life of three months, packaging is generally 250 kg iron drum nitrogen filled packaging (tank car nitrogen filling is 10 days shelf life).
2. Polymerized MDI: colorless tan liquid, stored at room temperature, with a shelf life of two years, and the packaging is generally 250 kg iron drum filled with nitrogen.
3. Existing technology: The world's popular MDI production method is basically based on aniline as raw material and phosgene.
After the method, the MDI products formed into crude products are reduced, and then the pure MDI and polymerized MDI are separated by the fractionation device.
4. The latest technology: Due to the huge harm of phosgene, many factories are actively developing new synthesis processes to replace phosgene production, such as dimethyl carbonate.
However, these methods are only successful cases in small pilot plants, and cannot be applied to large-scale production at all.
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Summary. The main reasons for the environmental protection of MDI glue are as follows.
The first point is that its synthetic raw materials are very safe. Its synthetic raw materials, such as aniline, are relatively stable.
The second point is that its polymer structure is relatively stable and not easy to volatile. As an adhesive, MDI glue has a polymer form, which is not easy to volatilize in addition to being stable, so it is relatively environmentally friendly and safe.
The third point is that it is formaldehyde-free. Formaldehyde content is a point that people are very concerned about when choosing this product. MDI glue is formaldehyde-free, has no harm to the human body, and has little impact on the environment.
To sum up, MDI glue is very eco-friendly.
Is MDI glue really eco-friendly?
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The pro is really environmentally friendly.
The full name of MDI glue is heterodismantling and leakage ester adhesive, commonly referred to as MDI adhesive, and the color search is Luhong dark reddish brown, which is a liquid product and is relatively applicable in the manufacture of high-performance wood-based panels.
The main reasons for the hidden source environmental protection of MDI glue are as follows. The first point is that its synthetic original stove material is very safe. Its synthetic raw materials, such as aniline, are relatively stable.
The second point is that its polymer structure is relatively stable and not easy to volatile. As an adhesive, MDI glue has a polymer form, which is not easy to volatilize in addition to being stable, so it is relatively environmentally friendly and safe. The third point is that it is formaldehyde-free.
Formaldehyde content is a point that people are very concerned about when choosing this product. MDI glue is formaldehyde-free, has no harm to the human body, and has little impact on the environment. To sum up, MDI glue is very eco-friendly.
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MDI is the most important raw material for the production of polyurethane, and a small amount of MDI is used in other applications besides polyurethane. The use of MDI ecological adhesive to make it into board not only solves the over-exploitation of forest resources, but also because it does not contain formaldehyde, which is conducive to people's home health, and is expected to develop into a product with the most market development potential and industrialization prospects.
Polyurethane has the elasticity of rubber, the strength of plastic and excellent processing performance, especially in heat insulation, sound insulation, wear resistance, oil resistance, elasticity and other aspects of other synthetic materials can not be compared, is the sixth largest plastic after polyethylene, polyvinyl chloride, polypropylene, polystyrene and ABS, has been widely used in national defense, aerospace, light industry, chemical industry, petroleum, textile, transportation, automobile, medical and other fields, become an indispensable emerging material for economic development and people's lives.
MDI and TDI are substitutes for each other and are both raw materials for the production of polyurethanes. At present, MDI is slightly more expensive, and the plasticity of polyurethane products formed by MDI is relatively good.
Chemical Name: Diphenylmethane Diisocyanate Product Classification: Pure MDI, Polymerized MDI, Liquefied MDI, Modified MDI, etc.
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MDI's scientific name is isocyanate, which is a very safe and stable compound, which can be used to make artificial blood vessels, heart valves and other artificial organs implanted in the human body, and can also be used to make refrigerator liner materials, Lycra fiber clothing fabrics and other materials closely related to the human body, which is a very safe adhesive. Wanhua MDI glue has obtained a national patent, hope to adopt!
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