Molding process is the production process of solid silica gel. It uses two modules above and below, and a mold core is placed in the middle, so it is called molding silicone rubber. The main produc......
2019-12-20High temperature vulcanized silicone rubber is a high molecular weight (generally molecular weight of 400,000 to 800,000) polyorganosiloxane (ie, raw rubber). It is reinforced with fillers and various......
2019-12-20[1] The difference in Mooney viscosity of the elastomer used is too large; [2] Inappropriate selection of plasticizer and rubber; [3] Too much granules; [4] Small partic......
2019-12-19[1] Rubber has expired and is partially gelled; [2] EPDM or butyl rubber is too cold; [3] frozen natural rubber; [4] Insufficient pre-plasticization of natural rubber; &......
2019-12-19[1] Invalidation of temperature control of the internal mixer; [2] Insufficient pressure on the upper plug; [3] Excessive wear of the welding layer in the mixing room; [......
2019-12-19[1] Failure to follow the established mixing process; [2] Aggregates of oily and dry materials stick to the top pin and the side of the feed hopper [3] Improper rotor speed [4] Th......
2019-12-19[1] Insufficient mixing time; [2] Draining temperature is too low or too high; [3] At the same time add acidic and alkaline complexing agents (such as adding stearic acid and scorch inhibitor ESEN t......
2019-12-19A. The main reasons for the agglomeration of the compounding agent are: insufficient raw rubber mastication; excessive roller distance; excessively large rubber loading capacity; excessively high roll......
2019-12-19It is closely related to groups. All rubbers with nitrile (-CN) hydroxyl (-OH) and carboxyl (-COOH) groups have strong polarity, which is called polar rubber. They have good bonding with metals, and r......
2019-12-18Different groups on the rubber monomer bring different characteristics to the rubber. Such as: -COOH (carboxyl): can give good viscosity;-CL: polar and electronegative; phenyl: large volume can block ......
2019-12-18Different groups on the rubber monomer bring different characteristics to the rubber. Such as: -COOH (carboxyl): can give good viscosity;-CL: polar and electronegative; phenyl: large volume can block ......
2019-12-18Usually only occurs in SR. During the polymerization process, due to different structure control, too many branched structures are formed. As a result, a gel appears in this part, which is called a ge......
2019-12-18Rubber is actually a mixture of molecular chains of different sizes and molecular weights. If different molecular weights are arranged according to the frequency of appearance, a molecular weight dist......
2019-12-18Raw raw rubber is commonly known as raw rubber. In fact, raw rubber is not 100% pure. For example, non-rubber hydrocarbons (about 5%) contained in natural rubber include resin acids and proteins. Anti......
2019-12-18This knife method is to cut the glue from left to right to a certain distance, then turn the blade 90 ° to continue cutting, so that the film will fall on the liner after cutting, and stop the tapping......
2019-12-17