the production method of using d4 or dmc to make amino silicone oil is as follows: 1. hydrolysis of coupling agent first put 100kg of piperazine-based…
1.foreword as we all know, polyurethane slow rebound foam is also called memory foam and viscoelastic foam. its unique feature is that it can conform …
introduction hydrogen peroxide is the most commonly used oxidative bleaching agent in the current pre-treatment bleaching process. whether it is two a…
sponge-like porous materials based on electrospinning technology have the advantages of high porosity, light weight and versatility. with the continuo…
textile printing and dyeing auxiliary companies are miserable: on the one hand, printing and dyeing companies do not agree with the price increase of …
colorless – slightly yellowish transparent liquid, does not contain heavy metals such as mercury, lead, polycyclic aromatic hydrocarbons, phthal…
the production processes and formulas of several special polyurethane foams polyurethane flexible foam refers to a porous or reticulated foam (sponge)…
if manual intermittent box foaming is used, it is basically the same as the ordinary polyester sponge foaming method. what needs to be explained is th…
recently, i have often received calls from friends in the industry from all over the country asking about various technical problems that arise in the…
preparation of smooth amino silicone oil smooth crude oil generally uses linear bodies as raw materials. first, pump the linear body into the kettle, …
1. the most important thing to calculate in the rigid foam composite material is whether the ratio of black and white materials (weight ratio) is reas…
determine the foaming system: 141b or cyclopentane. predetermination of the range of water volume/physical foaming dose 2. first, clarify the process …