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Processing method of polypropylene pipes

A polypropylene pipe material and processing method technology, applied in the field of pipes, can solve problems such as uneven stress on pipes, pipe material deformation, pipe damage, etc., and achieve the effects of improving rigidity, reducing basis weight, and reducing dosage

Inactive Publication Date: 2012-07-11
江苏金波新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The laying of the hanger is different from the traditional laying. The most prominent problem is the deformation of the pipe. Since the pipe is supported by the hanger during the laying of the hanger, the point of the pipe is stressed. Due to the accuracy of the installation of the hanger, it is easy to use Pipes are stressed unevenly, resulting in deformation, damage to pipes and possible concentrated point loads

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 100 parts of copolymerization grade polypropylene, 10 parts of heavy calcium carbonate, 6 parts of glass microspheres, 0.2 parts of 1010 antioxidant (by weight) were mixed and stirred evenly, the rotating speed was 800 rpm, and the stirring time was 5 minutes; the above mixture Add the twin-screw extruder to extrude the pipe. The process conditions of the extrusion process: the temperature of the barrel of the extruder is set to 175°C, the temperature of the die is set to 190°C, the pipe is cooled by vacuum or water, shaped, and formed Finished product. The particle size of heavy calcium carbonate is 680 mesh, and the particle size of glass microsphere is 190 mesh.

[0015] The thermal deformation temperature of the pipe can be increased by 20°C, the rigidity of the pipe can be greatly improved, the hardness can be increased by 1.5 times, and the coefficient of linear expansion can be reduced by 30%.

Embodiment 2

[0017] Mix 100 parts of copolymerization grade polypropylene, 12 parts of heavy calcium carbonate, 7 parts of glass microspheres, and 0.2 parts of 1010 antioxidant, mix and stir evenly, the rotation speed is 835 rpm, and the stirring time is 5 minutes; add the above mixture to the twin-screw extruder extruder, extrude the pipe, and the technological conditions of the extrusion process: the temperature of the barrel of the extruder is set at 190°C, and the temperature of the die is set at 200°C; the pipe is cooled by water or vacuum, and shaped. The particle size of the heavy calcium carbonate is 740 mesh, and the particle size of the glass microspheres is 200 mesh.

[0018] The thermal deformation temperature of the pipe can be increased by 20°C, the rigidity of the pipe can be greatly improved, the hardness can be increased by more than 2 times, and the coefficient of linear expansion can be reduced by 30%.

Embodiment 3

[0020] Mix 100 parts of copolymerization grade polypropylene, 15 parts of heavy calcium carbonate, 8 parts of glass microspheres, and 0.4 parts of 1010 antioxidant, mix and stir evenly, the rotation speed is 800 rpm, and the stirring time is 6 minutes; add the above mixture to the twin-screw extruder Extruder, extrude the pipe, the technological conditions of the extrusion process: the temperature of the barrel of the extruder is set at 200°C, the temperature of the die is set at 195°C; the pipe is cooled and shaped, and it is ready. The particle size of heavy calcium carbonate is 800 mesh, and the particle size of glass microsphere is 220 mesh. The thermal deformation temperature of the pipe can be increased by 30°C, the rigidity of the pipe can be greatly improved, the hardness can be increased by 3 times, and the coefficient of linear expansion can be reduced by 30%.

[0021] To sum up, compared with ordinary polypropylene pipes, the present invention has the advantages of ...

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Abstract

The invention provides a processing method of polypropylene pipes. According to the method, copolymerized polypropylene, heavy calcium carbonate, glass beads and antioxidants are evenly mixed and stirred; then a mixture is added to a twin-screw extruder to extrude the pipes; and finally, all that is needed is to cool and shape the pipes. The processing method has the advantages that the processing is convenient and the operation is convenient and simple.

Description

technical field [0001] The invention relates to a pipe material, in particular to a polypropylene pipe material and a preparation method thereof, and belongs to the technical field of pipelines. Background technique [0002] Sustainable development is the current common goal of the world. Reducing energy consumption, protecting the environment, and avoiding hindering normal social activities are getting more and more attention. The laying link often plays an important role in the cost and energy consumption of plastic pipeline projects. Most of the plastic pipes outside the building are buried and laid by hangers. In the traditional hanger laying, the hanger is installed on site by mechanical or manual work according to the designed line, and then the pipeline is installed in the hanger and the connection and test are completed. [0003] Hanger laying technology puts forward new requirements for pipes and their materials. The laying of the hanger is different from the tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08K3/26C08K7/20F16L9/12B29C47/92B29C48/92
CPCB29C48/09B29C48/40B29C48/90B29C48/905B29C48/911B29C48/916B29C48/92B29C2948/92704B29C2948/92895
Inventor 朱华明陈德明
Owner 江苏金波新材料科技有限公司
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