Program Description Catalysis is the study of chemical reactions in which the energy barrier and rate are affected by other substances. Usually in het…

Industrial Catalysts Catalysts occupy an extremely important position in the modern chemical industry, with about 90% or more of chemical production p…

1, hydroxyl value: 1 gram of polymer polyol contains the amount of hydroxyl (-OH) equivalent to the number of milligrams of KOH, unit mgKOH/g. 2、Equiv…

1. What is sprayed rigid polyurethane? Sprayed rigid polyurethane is a new type of waterproof and thermal insulation material made of polymer by mixin…

Background Polyurethane rigid foam for the construction industry is an important branch of the polyurethane industry, which is characterized by its mu…

Polyurethane is a polymer containing a urethane group (-NHCOO) in the main chain of the polymer, known as polyurethane (PU). Polyurethane is an emergi…

I. Definition 1, hydroxyl value: 1 gram of polymer polyol contains the amount of hydroxyl (-OH) equivalent to the number of milligrams of KOH, unit mg…

It is an indisputable fact that various synthetic polymer materials such as plastic and rubber are ubiquitous in our life. But among the many polymer …

1 The number of accidents and problems encountered in actual foam production is diverse, and each accident is caused by a variety of factors. In the a…

The influence of catalysts, one-step process requires more active catalysts than the prepolymerization method, which usually uses a composite catalyti…

In the process of polyurethane foam preparation, the role of catalysts is mainly to regulate the speed of foaming and gelation reactions to make them …