The main component of the lubricant used in pump trucks is polyacrylamide, which is a water-soluble linear polymer polymerized from acrylamide monomers. It is usually a white powder. It is a solid-like substance that can quickly dissolve in water to form a viscous liquid at room temperature. Because the structural unit of polyacrylamide contains amide groups, it is easy to form hydrogen bonds, making it have good water solubility and high chemical activity. It is easy to obtain branched or network structures through grafting or cross-linking, and has extremely strong flocculation. effect.
When its concentration is high, there are a large number of chain-to-chain contact points in the solution, making the polyacrylamide solution gel-like. This gel-like The liquid is a lubricating film composed of countless micro-anions, which can be used to lubricate the inner wall of the pump tube, effectively reducing the resistance of the tube wall to concrete by more than 50%-70%. Compared with traditional mortar, the lubrication effect is better.
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