The application of DMCHA
DMCHA is especially suitable for preparing two component systems. It can be dissolved in many hard foam polyols and auxiliaries. In the combination, the performance is stable, no organic tin is needed, the activity is moderate, the tunability is large, and it can be stored for a long time. In the large capacity fridge compound, adding LCA-1 and LCA-3 can improve the flow performance of the foam. In general, the amount of rigid foam is about 3% of polyether, and auxiliary catalysts can also be added according to the requirements of products. The product has ammonia taste and bitterness, stimulates the skin and has certain toxicity. It must wear protective products when producing.
Two methyl cyclohexanamine DMCHA is a low viscosity medium active amine catalyst used for rigid foam, plate, spraying, and rigid polyurethane foam. DMCHA catalyst has a catalytic effect on both gel and foaming. Two methyl cyclohexamine provides a more balanced catalytic performance for the foaming reaction and gel reaction of hard bubbles. It has a moderate catalytic activity to the reaction of water to isocyanate, and DMCHA is a strong initial catalyst for the reaction of foam. DMCHA can be used as a separate catalyst, but generally shared with other catalysts. According to the reaction speed and foam properties, the amount of DMCHA per 100 polyether polyols was between 0.5-3.5 parts. In addition to hard foam, two methylcyclohexanamine DMCHA can be used as an auxiliary catalyst for molding soft foams and semi rigid foams.
N, N- two methyl cyclohexamine is mainly used as a catalyst for rigid polyurethane foam, and is also widely used in other aspects: also as a stabilizer for fuel oil to prevent the formation of oil residue; it is also a stable additive for oil fractions at 150-480 C; also used as a raw material for medicine and pesticides, used as a fungicide, disinfectant, and a disinfectant. Dyes and antistatic agents and so on.