In a year when manufacturing supply chains have been hit hard, another shortage is making productive life harder for manufacturers and consumers: plas…
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、 Basic reaction and data The formation of polyurethane soft foam includes 2 basic reactions: foaming reaction and polymerization reaction (also call…
Polyurethane flexible foam, refers to the soft polyurethane foam, is a kind of flexible polyurethane foam with certain elasticity, it is the largest a…
2019 MDI whole industry chain big events 1 In 2019, the global economy is running weak, and the Organization for Economic Cooperation and Development …
On November 26-27, China Polyurethanes Industry Association (PUIA) Auxiliaries Branch held the Polyurethane Auxiliaries Application Technology Confere…
1. Introduction Catalysts are chemicals that can change the rate of chemical reactions. Catalysts used in polyurethane synthesis can be broadly classi…
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 …
Kinetics of the reaction of hydroxyl compounds with isocyanates -d(-NCO)/dt=K0×(-NCO)×(-OH) K1 is the forward reaction rate for the complex formation …
One, the hard foam combination material need to calculate things is the ratio of black and white materials (weight ratio) is not reasonable, another f…
The greenhouse gas carbon dioxide (CO2) is the end product of many chemical reactions, and its excessive emission will aggravate the global average te…
It is because of the overwhelming advertising that many people have already decided that silicone oil in shampoo is the “big villain” R…
