The booster Pump is called a booster pump installed on the pipeline. It is a special name for many pumps. Generally speaking, the pipeline booster pump refers to the pump that is installed on the pipeline to transport liquid, and is not limited to a certain type or form of pump. It can be vertical or horizontal, such as vertical multi-stage centrifugal pumps. , Horizontal multi-stage centrifugal pumps, vertical single-stage centrifugal pumps, horizontal single-stage centrifugal pumps, self-priming centrifugal pumps, etc. can all be called pipeline booster pumps. Generally speaking, the pipeline booster pump in the industry generally refers to a pump with a pipeline structure, which can be directly installed in series like a pipeline.
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What other molding materials besides polyethylene ?
1. Copolymers of ethylene and polar monomers generally have the following four types.
1EVA, EMA, EEA, EMMA, etc. are mainly used as soft materials for film, composite and hot melt adhesives.
2 An ionic polymer for improving PE toughness, transparency, adhesion, etc., such as a metal salt of an EAA or EMMA copolymer, used as an anchoring agent.
3 EVOH for high gas barrier properties.
4 copolymer of ethylene and functional monomers (such as functional groups containing acid anhydride groups, carboxyl groups, hydroxyl groups, amino groups, epoxy groups, etc.), such as Et/EEA/GMA, Et/VA/GMA, EAA, Et/EEA/ MAH, Et/DMAEA, polyethoxylate adduct of EVOH, etc. (n is ethylene, GMA is glycidyl methacrylate, MAH is maleic anhydride, DMAEA is methacrylic acid-N-dimethylaminoethyl Ester), mainly used as a dispersing agent for adhesives, compatibilizers, pigments or fillers.
2. Modified resin of PE
1 low relative molecular mass PE relative molecular mass is 1000-12000, used as a release agent and a modifier for plastics, coatings, adhesives, inks, etc.
2PEC (chlorine content 30% to 40%) pvc modifier, chemical resistant thermoplastic elastomer.
3 chlorosulfonated polyethylene (25% to 43% chlorine content, 0.9% to 1.4% sulfur content) is mainly used as a thermoplastic elastomer with weather resistance and chemical resistance.
4 cross-linked PE adopts chemical cross-linking or radiation cross-linking to improve weather resistance and chemical resistance, and is used for hot water pipes, heat-resistant electrical insulating materials, wire covering and the like.
5 Filling PE such as filling CaC03 to reduce flammability; filling carbon black to improve conductivity and weather resistance; filling wood powder to improve heat resistance, rigidity and the like.
3. Ultra-high molecular weight PE (UHMWPE) improves toughness and wear resistance.