Composite plastic pipe and preparation process thereof
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A composite plastic and preparation process technology, applied in the field of composite plastic pipes and their preparation technology, can solve problems such as restricting the production and application of chlorinated polyvinyl chloride, difficult processing, etc., and achieve excellent mechanical properties, good mechanical properties, and production costs. low effect
Inactive Publication Date: 2019-05-07
陆伯川
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Abstract
Description
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Problems solved by technology
However, the processing of chlorinated polyvinyl chloride plastic pipes is difficult, which restricts the production and application of chlorinated polyvinyl chloride
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0027] A composite plastic pipe, the raw materials and mass percentages of the composite plastic pipe are: chlorinated polyvinyl chloride 65%, polybutene 8%, styrene rubber 7%, cross-linked polyethylene 7%, medium molecular weight poly Ethylene 5%, acetal resin 4%, silane coupling agent 1.3%, plasticizer 0.7%, stabilizer 0.4%, lubricant 0.4%, modifier 0.5%, lanthanum oxide 0.7%; The molecular weight of ethylene is 4×105; the plasticizer is dioctyl phthalate; the stabilizer is epoxy soybean oil; the lubricant is zinc stearate; the modifier is hydroxyphosphate.
Embodiment 2
[0029] A composite plastic pipe, the raw materials and mass percentages of the composite plastic pipe are: chlorinated polyvinyl chloride 75%, polybutene 3%, styrene rubber 3%, cross-linked polyethylene 3%, medium molecular weight poly Ethylene 6%, acetal resin 5%, silane coupling agent 1.5%, plasticizer 1%, stabilizer 0.6%, lubricant 0.4%, modifier 0.5%, lanthanum oxide 1%; The molecular weight of ethylene is 6×105; the plasticizer is dioctyl phthalate; the stabilizer is epoxy soybean oil; the lubricant is zinc stearate; the modifier is hydroxyphosphate.
Embodiment 3
[0031] A composite plastic pipe, the raw materials and mass percentages of the composite plastic pipe are: chlorinated polyvinyl chloride 68%, polybutene 7%, styrene rubber 6%, cross-linked polyethylene 6%, medium molecular weight poly Ethylene 6%, acetal resin 5%, silane coupling agent 0.5%, plasticizer 0.5%, stabilizer 0.2%, lubricant 0.2%, modifier 0.1%, lanthanum oxide 0.5%; The molecular weight of ethylene is 4.5×105; the plasticizer is di-sec-octyl phthalate; the stabilizer is epoxy soybean oil; the lubricant is zinc stearate; the modifier is hydroxyphosphate.
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Abstract
The invention discloses a composite plastic pipe and a preparation process thereof. Raw materials comprises chlorinated polyvinyl chloride, polybutylene, styrene rubber, cross-linked polyethylene, medium-relative-molecular-weight polyethylene, acetal resin, a silane coupling agent, a plasticizer, a stabilizer, a lubricant, a modifier and lanthanum oxide. The preparation process comprises the following steps: stirring the following materials: the chlorinated polyvinyl chloride, the polybutylene, the styrene rubber, the cross-linked polyethylene, the medium-relative-molecular-weight polyethyleneand the acetal resin, carrying out washing, and then carrying out drying treatment; putting the dried mixture into a hopper, carrying out mixing by stirring, then adding the silane coupling agent, the plasticizer, the stabilizer, the lubricant, the modifier and the lanthanum oxide into the hopper, and carrying out stirring; carrying out extruding forming to prepare a plastic pipe, and carrying out vacuum sizing, cooling, traction, annealing, cutting and packaging. The composite plastic pipe prepared by the preparation process is uniform and stable in chemical property and has excellent mechanical properties, and processing performance of the chlorinated polyvinyl chloride pipe is greatly improved.
Description
technical field [0001] The invention relates to the field of polymer compound compositions, in particular to a composite plastic pipe and a preparation process thereof. Background technique [0002] Plastic pipes are widely used in important areas involving the national economy and the people's livelihood, such as urban construction, agricultural production, and industrial development, such as fluid transportation, gas transportation, and wire and cable sheathing pipes. [0003] Chlorinated polyvinyl chloride is a further chlorinated modified product of polyvinyl chloride. In addition to the excellent properties of polyvinyl chloride, it also has good corrosion resistance, heat resistance, solubility, flame retardancy, mechanical strength, etc. Therefore, plastic pipes made of chlorinated polyvinyl chloride have the advantages of high rigidity, high internal pressure resistance, good heat resistance, corrosion resistance, good flame retardancy, and low linear expansion coeff...
Claims
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Application Information
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