A kind of composite plastic pipe and its preparation process
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A technology of composite plastics and preparation process, which is applied in the field of composite plastic pipes and its preparation process, which can solve the problems of increasing the production cost of plastic pipes, increasing the price of plastic pipes, and the difficulty of pipe processing, etc., and achieves excellent mechanical properties and good mechanical properties , the effect of low production cost
Active Publication Date: 2017-12-12
黑龙江京聚保温材料有限公司
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However, this patent uses a higher content of organic tin stabilizer in the process of preparing plastic pipes. Because the cost of organic tin materials is higher, the production cost of the plastic pipes is greatly increased, and the selling price of plastic pipes is increased. And the problem of difficult pipe processing is not solved
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Embodiment 1
[0030] A composite plastic pipe. The raw materials and their mass percentages for preparing 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%; medium molecular weight is poly The molecular weight of ethylene is 4×10 5 The plasticizer is di-secondary octyl phthalate; the stabilizer is epoxy soybean oil; the lubricant is zinc stearate; the modifier is hydroxy phosphate.
Embodiment 2
[0032] A composite plastic pipe. The raw materials and their mass percentages for preparing 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%; medium molecular weight is poly The molecular weight of ethylene is 6×10 5 ; Plasticizer is di-secondary octyl phthalate; stabilizer is epoxy soybean oil; lubricant is zinc stearate; modifier is hydroxy phosphate.
Embodiment 3
[0034] A composite plastic pipe. The raw materials and their mass percentages for preparing 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%; of which the relative molecular weight is poly The molecular weight of ethylene is 4.5×10 5 ; Plasticizer is di-secondary octyl phthalate; stabilizer is epoxy soybean oil; lubricant is zinc stearate; modifier is hydroxy phosphate.
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Abstract
The invention discloses a composite plastic pipe and a preparation process thereof. The composite plastic pipe is prepared from the following raw materials: chlorinated polyvinyl chloride, polybutylene, styrene-rubber, crosslinked polyethylene, medium relative molecular weight polyethylene, acetal resins, silane coupling agents, plasticizers, stabilizers, lubricants, modifiers and lanthanum oxide. The preparation process comprises the following steps of carrying out drying processing after stirring and cleaning the chlorinated polyvinyl chloride, the polybutylene, the styrene-rubber, the crosslinked polyethylene, the medium relative molecular weight polyethylene and the acetal resins; putting into a hopper to stir and mix; then putting the silane coupling agents, the plasticizers, the stabilizers, the lubricants, the modifiers and the lanthanum oxide into the hopper to stir and mix; performing extrusion forming to obtain the plastic pipe; and performing vacuum calibrating, cooling, dragging, annealing, cutting and packaging to obtain the composite plastic pipe. The composite plastic pipe prepared by the invention is uniform and stable in chemical property, and has excellent mechanical performance, and the 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 fields involving the national economy and the people's livelihood, such as fluid transportation, gas transportation, wire and cable sheathing, urban construction, agricultural production, and industrial development. [0003] Chlorinated polyvinyl chloride is a product of further chlorination modification 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 coefficient. They are...
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Application Information
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