The product is used for:
It produces polyurethane soft foam products with fine pore good handle.
Material a: combined polyether
Material B: combined diphenylmethane diisocyanate
Material a: net weight 230 kg, blue metal barrel
Material B: net weight 250 kg, red metal barrel
The unused raw materials should be stored in a well sealed barrel to avoid moisture intrusion affecting the quality of raw materials. The ideal storage temperature of raw material is 35 ± 5 ℃, the storage period of material B is 6 months.
Website optimization information:
Reaction of acrylate alcohol
The Polyols (such as polyester, methacrylate other polyether polyols) containing methyl end groups react with polyacrylate convert them into polyurethane polymers, which is the most basic reflection of MDI price of polyurethane materials. According to scientific research, the functional group of carbamate is a characteristic functional group with great cohesive energy large indoor space volume. It has the characteristics of hard open chain in the polymer platform. The polyol with carbon chain as carbon chain has strong tensile strain effect becomes soft open chain of high polymer? In fact, polyurethane is a block polymer composed of stiffness functional groups (open chain) soft open chain. Obviously, the price of crude MDI may reduce the proportion of rigid open chain increase the distance between rigid functional groups when using polyols with high relative molecular weight. In the specific production, we should different kinds of polyols with different relative molecular weight according to different commodity characteristics application sites. The harm of polyols with different molecular weight on pur characteristics the reaction rate of methacrylate with MDI are all different.
In the application of polyols acrylates, in addition to the raw material types relative molecular weight, the more critical factor is the proportion of functional groups reflecting each other, that is - NCO / - Oh ratio. It determines that the relative molecular weight of polymer is very small, which is a crucial performance parameter for the two-step generation of polyurethane materials.