Limitation and Improvement of Common Analytical Methods for Foaming
[We usually learn the chemical reaction and formulation of polyurethane from the quality, which is called the first level The unit of mass is kilogram or gram, which is convenient to weigh the formula For example, if the amine component increases, the reaction will be faster, and if the amine component decreases, the problem will be solved What s more complicated is that the addition or subtraction of two or three components causes changes to accumulate experience and skills It can be said that most of the foamers in China, including me, stay at this level .