the budding period of industrial catalysts the beginning of industrial-scale production of catalytic technology the history of the development of the …
affected by construction conditions, equipment, technology and the environment, rigid polyurethane foam will have various abnormal phenomena during th…
1. hydroxyl value: the amount of hydroxyl (-oh) contained in 1 gram of polymer polyol is equivalent to the number of milligrams of koh in mgkoh/g. 2. …
the concept of silicone-free shampoo has become more and more popular in recent years. when the friends in our studio grow shampoo, they first ask if …
introduction the seat system is mainly composed of seat frame, seat polyurethane foam and seat cover. seats are an important part of vehicle interiors…
1. stability test of silicone oil 1.1 storage stability test of silicone oil storage stability of silicone oil at low temperatures pour silicone oil i…
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…
mercerized cotton fabric what is mercerized cotton mercerized cotton fabric is to first singe the yarn to remove the foreign hair on the surface of th…
during the foaming process of soft foam, i wonder if you will encounter such a problem. the phenomenon of semi-collapse occurs, and the degree of foam…
the selection of hard foam stabilizer (hereinafter referred to as “silicone oil”) model and dosage definition are of great importance. it …
during the foaming process of soft foam, i wonder if you will encounter such a problem. the phenomenon of semi-collapse occurs, and the degree of foam…
in the future, we will try to discuss as little isocyanates as possible. after all, they are beyond the control of our grassroots. most of the talk is…