| abstract |
The invention discloses a kind of composite plastic pipe and its preparation process, raw materials are as follows: chliorinated polyvinyl chloride, polybutene, styrene rubber, crosslinked polyethylene, middle relative molecular mass polyethylene, acetal resin, silane coupling agent, plasticizer, stabilizer, lubricant, modifying agent, lanthana；Preparation process: it will be dried after chliorinated polyvinyl chloride, polybutene, styrene rubber, crosslinked polyethylene, middle relative molecular mass polyethylene, the cleaning of acetal resin material stirring；It is stirred in investment hopper, then also puts into stir in hopper by silane coupling agent, plasticizer, stabilizer, lubricant, modifying agent, lanthana and close；Through extrusion forming, plastic pipe is made, through vacuum sizing, cooling, traction, annealing, cutting, packaging to get.Composite plastic pipe chemical property prepared by the present invention is uniform, stablizes, and has outstanding mechanical performance, significantly improves the processing performance of chlorinated polyvinyl chloride tubes. |