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Preparation process for heat-resistant modified PVC (polyvinyl chloride) plastic pipe

A preparation process and technology for plastic pipes, which are applied in the field of preparation technology of heat-resistant modified PVC plastic pipes, can solve the problems of poor heat resistance, complex preparation process and high manufacturing cost, and achieve excellent strength and simple and easily controllable preparation process. Effect

Inactive Publication Date: 2016-09-07
SUZHOU YAKE PLASTIC RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, PVC pipes still have certain defects in heat resistance, mainly because of their poor heat resistance and cannot be used in high temperature liquids.
In addition, the existing PVC pipe preparation process is complicated and the manufacturing cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of preparation technology of heat-resistant modified PVC plastic pipe material, described preparation technology comprises the steps:

[0017] 1) Mixing: In parts by weight, take 55 parts of PVC resin, 2 parts of stabilizer, 1 part of lubricant, 20 parts of methyl methacrylate-styrene-butadiene copolymer, styrene-acrylonitrile- 25 parts of methyl methacrylate copolymers, 5 parts of calcium carbonate, 4 parts of heat-resistant modifiers, put each raw material into the high-speed mixer and mix to obtain the mixture; wherein the particle diameter of the calcium carbonate is 30 μm, Excellent compatibility when mixed with other raw materials;

[0018] 2) Extrusion molding by extruder: put the mixture obtained in step 1) into the extruder and extrude to obtain a pipe with an outer diameter of 100mm and a wall thickness of 4mm, wherein the extrusion temperature of the extruder is 120°C;

[0019] 3) Shaping and cooling: the tube extruded in step 2) is vacuum cooled and ...

Embodiment 2

[0022] A kind of preparation technology of heat-resistant modified PVC plastic pipe material, described preparation technology comprises the steps:

[0023] 1) Mixing: In parts by weight, take 56 parts of PVC resin, 3 parts of stabilizer, 2 parts of lubricant, 25 parts of methyl methacrylate-styrene-butadiene copolymer, styrene-acrylonitrile- 30 parts of methyl methacrylate copolymers, 7 parts of calcium carbonate, 6 parts of heat-resistant modifiers, put each raw material into the high-speed mixer and mix to obtain a mixture; wherein the particle diameter of the calcium carbonate is 40 μm, Excellent compatibility when mixed with other raw materials;

[0024] 2) Extrusion molding by extruder: Put the mixture obtained in step 1) into the extruder and extrude to obtain a pipe with an outer diameter of 110mm and a wall thickness of 5mm, wherein the extrusion temperature of the extruder is 160°C;

[0025] 3) Shaping and cooling: the tube extruded in step 2) is vacuum cooled and s...

Embodiment 3

[0028] A kind of preparation technology of heat-resistant modified PVC plastic pipe material, described preparation technology comprises the steps:

[0029] 1) Mixing: In parts by weight, take 60 parts of PVC resin, 5 parts of stabilizer, 3 parts of lubricant, 30 parts of methyl methacrylate-styrene-butadiene copolymer, styrene-acrylonitrile- 35 parts of methyl methacrylate copolymers, 10 parts of calcium carbonate, 8 parts of heat-resistant modifiers, put each raw material into the high-speed mixer and mix to obtain a mixture; wherein the particle diameter of the calcium carbonate is 50 μm, Excellent compatibility when mixed with other raw materials;

[0030] 2) Extrusion molding by extruder: put the mixture obtained in step 1) into the extruder and extrude to obtain a pipe with an outer diameter of 120mm and a wall thickness of 6mm, wherein the extrusion temperature of the extruder is 180°C;

[0031] 3) Shaping and cooling: the tube extruded in step 2) is vacuum cooled and ...

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Abstract

The invention discloses a preparation process for a heat-resistant modified PVC (polyvinyl chloride) plastic pipe. The preparation process comprises the following steps: 1) mixing: taking 55 to 60 parts of PVC resin, 2 to 5 parts of stabilizer, 1 to 3 parts of lubricant, 20 to 30 parts of methyl methacrylate-styrene-butadiene copolymer, 25 to 35 parts of styrene-acrylonitrile-methyl methacrylate copolymer, 5 to 10 parts of filling agent and 4 to 8 parts of heat-resistant modifier according to parts by weight, and putting all the raw materials into a high speed mixing machine and mixing to obtain a mixture; 2) performing extrusion molding by an extruder; 3) shaping and cooling; 4) cutting at a fixed length. With the adoption of the manner, the process disclosed by the invention is simple and easy to control; the prepared PVC pipe has excellent strength, impact resistance and heat resistance and can be used in high-temperature liquid stably for a long time.

Description

technical field [0001] The invention relates to the technical field of plastic pipe preparation, in particular to a preparation process of heat-resistant modified PVC plastic pipe. Background technique [0002] With the improvement of people's living standards, more and more disadvantages have been exposed to the steel pipes, cast iron pipes and galvanized pipes that are most used in water supply, drainage and heating. People are in urgent need of beautiful, non-rusting and heat-resistant pipe materials to replace them. they. PVC pipes have a long history and excellent comprehensive performance, and have widely replaced the original metal pipes. However, at present, PVC pipes still have certain defects in heat resistance, mainly because of their poor heat resistance and cannot be used in high-temperature liquids. In addition, the existing PVC pipes have complex preparation processes and high manufacturing costs. Contents of the invention [0003] The technical problem m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L51/04C08L25/14C08K3/26
CPCC08L27/06C08K2201/003C08L2201/08C08L2203/18C08L2205/03
Inventor 刘永清
Owner SUZHOU YAKE PLASTIC RUBBER CO LTD