with the significant reduction of national v and national vi emission limits, after-engine measures have become the most effective way to control vehi…
motor vehicle catalysts should be replaced regularly motor vehicle exhaust pollution is serious. however, at the “breathing together, sha…
methyl silicone oil is still the main variety of silicone oil at present chinese silicone oil products are mainly concentrated in the middle an…
modern chemical industrial processes cannot be produced and used without catalysts. according to statistics, more than 90% of the chemical industry re…
in recent years, the application and development of modified polysiloxane research work has attracted much attention in the silicone market, and epoxy…
1 dxy-1 type selective catalytic method catalyst main technical parameters: (adaptation to gas source: acidic analysis gas containing h2s and conversi…
1. what is sprayed rigid foam polyurethane? sprayed rigid polyurethane is a new type of waterproof and thermal insulation material made of polymer by …
1、polyether as the main raw material, polyether reacts with isocyanate to produce carbamate, which is the skeleton reaction of foam products. in the c…
1、high closed pore rate (1) polyether polyol: high proportion of ethylene oxide, high activity, more occurring in the replacement of polyether polyol …
01 definition of silicone oil silicone oil is a kind of polyorganosiloxane with different polymerization degree chain structure. it is made by hydroly…