[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 tappin......
2019-12-17After the film is cut horizontally, it is attached to the front roller by hand and turned into a fan shape with the roller, moved from left to right or from right to left, and then vertically put into......
2019-12-17Cut the film on the roll horizontally, then fold the left and right sides of the film alternately to the middle, and make a triangular plastic bag on the front roller. After the rubber material has co......
2019-12-17Roll the rubber on the roller to the left and right to make it uniform. During operation, hold the knife at a 75 ° oblique angle to the horizontal line of the roller to cut the glue, and hold the fil......
2019-12-171) Roller pitch: Under a certain glue capacity, the roller pitch is generally 4 ~ 8mm, and the small roller pitch enters the powder. 2) Roller temperature: The roller temperature of natural rubber mi......
2019-12-17