Low-temperature-resistant and weathering-resistant PVC pipe and production method thereof

A PVC pipe and weather resistance technology, applied in the direction of tubular objects, other household appliances, applications, etc., can solve the problems of poor processing performance, increased production costs, poor compatibility, etc., and achieve excellent product toughness, improve low temperature resistance, and easy cutting effect

Inactive Publication Date: 2018-03-13
GUANGXI JINTAN PIPE IND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding a large number of various additives to the PVC base material is prone to the disadvantages of poor compatibility between raw material components and poor processability, and the use of various additives in order to make PVC pipes have excellent low-temperature brittleness increases production costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] S1. Raw material mixing: mix 80 parts of polyvinyl chloride resin, 10 parts of modified kaolin, 2 parts of stabilizer, 1 part of modifier, 0.5 part of PE wax, 0.5 part of plasticizer and 0.2 part of composite antioxidant according to parts by weight After mixing, put it in the material cylinder of the high-temperature mixer and carry out high-temperature mixing first. The mixing temperature is 115-120°C. After mixing for 30 minutes, cool the mixed material to 40-55°C and collect it for use;

[0032] S2, granulation: send the materials collected in S1 into a granulator for granulation, and control the temperature of the barrel of the granulator at 175-200°C to obtain pellets;

[0033] S3. Pipe making: Cool the pellets obtained in S2 and put them into the barrel, control the temperature of the barrel to 170-220°C, and the extrusion pressure to 35-50MPa, and then extrude the material into the PVC pipe through the die of the extruder , and sprayed and cooled in a cooling wa...

Embodiment 2

[0035] S1, raw material mixing: mix 90 parts of polyvinyl chloride resin, 15 parts of modified kaolin, 3 parts of stabilizer, 2 parts of modifier, 1 part of PE wax, 0.6 part of plasticizer and 0.4 part of composite antioxidant according to weight parts After mixing, put it in the material tank of the high-temperature mixer for high-temperature mixing. The mixing temperature is 115-120°C. After mixing for 33 minutes, cool the mixed material to 40-55°C and collect it for use;

[0036] S2, granulation: send the materials collected in S1 into a granulator for granulation, and control the temperature of the barrel of the granulator at 175-200°C to obtain pellets;

[0037]S3. Pipe making: Cool the pellets obtained in S2 and put them into the barrel, control the temperature of the barrel to 170-220°C, and the extrusion pressure to 35-50MPa, and then extrude the material into the PVC pipe through the die of the extruder , and sprayed and cooled in a cooling water tank to obtain a fini...

Embodiment 3

[0039] S1. Mixing of raw materials: 95 parts of polyvinyl chloride resin, 18 parts of modified kaolin, 4 parts of stabilizer, 2.5 parts of modifier, 1.5 parts of PE wax, 0.8 part of plasticizer and 0.3 part of composite antioxidant are formulated according to parts by weight After mixing, put it in the material tank of the high-temperature mixer and carry out high-temperature mixing first. The mixing temperature is 115-120°C. After mixing for 36 minutes, cool the mixed material to 40-55°C and collect it for use;

[0040] S2, granulation: send the materials collected in S1 into a granulator for granulation, and control the temperature of the barrel of the granulator at 175-200°C to obtain pellets;

[0041] S3. Pipe making: Cool the pellets obtained in S2 and put them into the barrel, control the temperature of the barrel to 170-220°C, and the extrusion pressure to 35-50MPa, and then extrude the material into the PVC pipe through the die of the extruder , and sprayed and cooled ...

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PUM

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Abstract

The invention relates to a low-temperature-resistant and weathering-resistant PVC pipe and a production method thereof, wherein the raw materials comprise, by weight, 80-100 parts of a polyvinyl chloride resin, 10-20 parts of modified kaolin, 2-5 parts of a stabilizer, 1-3 parts of a modifier, 0.5-2 parts of PE wax, 0.5-1 part of a plasticizer, and 0.2-0.5 part of a compound antioxidant. Accordingto the present invention, by using the modified kaolin as the filler, the raw materials are simple and easy to obtain, and have the low cost; and by adding the admixture in a matched manner, the low-temperature resistance of the PVC pipe is greatly improved, and the obtained PVC pipe has advantages of good weathering resistance, good aging resistance and good impact resistance.

Description

technical field [0001] The invention belongs to the processing field of PVC pipes, in particular to a low-temperature and weather-resistant PVC pipe and a production method thereof. Background technique [0002] Plastic pipes are high-tech composite chemical building materials, and chemical building materials are the fourth largest category of new building materials emerging in the contemporary era after steel, wood, and cement. Chemical building materials have made great progress and developed rapidly in our country, especially the widespread use of new environmentally friendly plastic pipes, which has set off a revolution to replace traditional building materials. Plastic pipes are widely used in the fields of building water supply and drainage, urban water supply and drainage, and gas pipes because of their advantages such as small water loss, energy saving, material saving, ecological protection, and convenient completion. They have become the main force of urban constru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L23/06C08L51/04C08L91/00C08K13/06C08K9/04C08K3/34C08K5/57C08K5/098C08K5/11C08K5/13C08K5/524B29C47/00B29L23/00
CPCC08L27/06B29C48/022B29L2023/22C08L2201/08C08L2203/18C08L2205/035C08L23/06C08L51/04C08L91/00C08K13/06C08K9/04C08K3/346C08K5/57C08K5/098C08K5/11C08K5/13C08K5/524
Inventor 梁洪昌
Owner GUANGXI JINTAN PIPE IND TECH CO LTD
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