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 …
In the process of foaming, if the hardness of the hard foam is not enough, how to improve the hardness? 01 Lower cost preferred, add calcium carbonate…
In the process of foaming, if the hard foam is not hard enough, how to improve the hardness? In this regard, I have collected some solutions for your …
While everyone is confident that China’s polyurethane industry is entering a rapid development phase, we should pay more attention to the future…
Polyurethane elastomer, also known as polyurethane elastomer, is a polymer synthetic material containing more urethane groups on the main chain, gener…
The brothers MDI and TDI. Did you know? Both of them are also the main raw materials for the important chemical polyurethane (TPU). As one of the wide…
Abstract: Lightweight as the main trend of future development in the field of automobile, it is necessary to make effective use of polymer materials, …
Polyurethane adhesives contain urethane groups (-NHCOO-) or isocyanate groups (-NCO) in the molecular chain, and are divided into two categories: poly…
