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What is the influence of temperature in the production process of polyurethane f

During the working process of the polyurethane foaming machine, the foaming needs heat. Without heat, the foaming agent in the system cannot evaporate and cannot be generated to meet the production requirements. Polyurethane foaming machine The heat in the working process is generated by the chemical reaction and provided by the environment. The heat in the chemical reaction is an invariant and does not change with the influence of external factors, but the heat provided by the environment changes with the change of ambient temperature. So what is the influence of temperature in the production process of polyurethane foaming machine?

When high environment temperature, environment can provide heat to the reaction system, can increase the reaction rate, shorten the reaction time. Show the bubble foam, bubble close to the surface and core density. When the environment temperature is low, part of the heat of reaction to the environment. The heat loss of the, on the one hand, the bubble extended maturation period, increase the foam molding shrinkage; The results show that the volume of foam at 15℃ is 25% smaller than that at 25℃ for the same foam material. On the other hand, a layer of hard skin without sufficient foam or even without foam will be formed on the foam surface, which increases the amount of foam perfusion and the production cost of foam.