Program Description Catalysis is the study of chemical reactions in which the energy barrier and rate are affected by other substances. Usually in het…
Highly transparent polyurethane adhesives were synthesized from dicyclohexylmethane diisocyanate (HMDI) and isophorone diisocyanate (IPDI) with polyca…
1、High closed pore rate (1) polyether polyol: high proportion of ethylene oxide, high activity, more occurring in the replacement of polyether polyol …
Shanghai Qiguang Industry and Trade Co. Founded in 1988, Qiguang is a professional enterprise specializing in the research and development, production…
The amount of accidents and problems encountered in actual foaming production is diverse, and each accident production is caused by a variety of facto…
1、Hydroxyl value: the amount of hydroxyl (-OH) contained in 1 gram of polymer polyol is equivalent to the number of milligrams of KOH, unit mgKOH/g. 2…
What is silicone? Silicone, the scientific name is generally called silicone, polysiloxane, silicone powder used in the market is generally produced f…
Industrial catalysts in their infancy The beginning of catalytic technology engaged in industrial scale production The history of the catalyst industr…
Affected by the construction conditions, equipment, technology and environment, polyurethane hard foam will appear various abnormal phenomena in the c…
51. The basic reaction of foam preparation A: It refers to the reaction of -NCO with -OH, -NH2 and H2O. When reacting with polyol, the “gel reac…
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…
In recent years the concept of silicone-free shampoo has become increasingly hot, our studio partners planting shampoo, first ask if it is good, and t…
