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High damping polyvinyl chloride material and method for preparing pipe

A polyvinyl chloride and damping technology, which is applied in the field of polyvinyl chloride modification, can solve problems such as damping performance of unseen polyvinyl chloride pipes, and achieve the effects of easy operation, reducing water flow noise and improving safety.

Active Publication Date: 2009-06-10
GUANGDONG LIANSU TECH INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Before the present invention is issued, there is no research report about improving the damping performance of polyvinyl chloride pipes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The preparation method that high damping polyvinyl chloride material of the present invention is used for preparing pipe is:

[0029] (1) Add PVC-U resin, heat stabilizer, lubricant, filler, damping modifier, and silane coupling agent into the heat mixer, and mix evenly at 120°C;

[0030] (2), put the above compound into the cold mixer, and cold mix to 45°C;

[0031] (3) Feed the above-mentioned cold-mixed mixture into a twin-screw extruder to extrude the pipe. The process parameters of the extrusion process are as follows:

[0032] Body temperature 170°C, 170°C, 120°C, 140°C, 170°C

[0033] Head temperature 170°C, 180°C, 190°C, 200°C, 210°C

[0034] The main engine rotates at 20 rpm, feeds at 30 rpm, and pulls at 64.5 m / min;

[0035] (4) The extruded pipe is formed by vacuum sizing and cooling;

[0036] (5) After the formed pipe is cut to length, flared and packaged, it is made into a finished product. Utilize above-mentioned preparation method, the formula of emb...

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PUM

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Abstract

The invention discloses a high damping polyvinyl chloride material and a method for preparing pipes with the high damping polyvinyl chloride material. The high damping polyvinyl chloride material contains polyvinyl chloride resin 100 portions, heat stabilizer 0.4 to 0.6 portions, lubricant 2.0 to 4.0 portions, filler agent 2.0 to 4.0 portions, damping modifier 10 to 14 portions and silane coupling agent 0.4 to 0.6 portions in weight unit. The polyvinyl chloride has better damping performance and higher softening temperature after being modified, particularly with the damping modifier being added, so that the polyvinyl chloride material can reduce the noise of water flow and resist stronger impact and improve the safety of pipe operation. Meanwhile, the method for preparing the pipes in the invention is in simple process and easy operation.

Description

technical field [0001] The invention relates to the technical field of polyvinyl chloride modification, in particular to a high-damping polyvinyl chloride material and a method for preparing pipes. Background technique [0002] Water supply and drainage system is an important part of urban construction. Traditional water supply systems mainly use metal pipes, which will cause pollution due to metal corrosion. Plastic pipes, especially rigid polyvinyl chloride pipes (PVC-U), are favored by the pipeline engineering community because of their light weight, corrosion resistance, small water loss, and easy installation; , its production energy consumption is less, the environment pollution is little, and it is paid more and more attention by the government and related industries. At home and abroad, plastic pipes are constantly replacing metal pipes and are developing very rapidly. However, PVC-U pipes have limited their further development due to their own shortcomings. These...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K5/57B29C47/40B29C47/92B29D23/00C08K5/54C08K5/09C08K3/26C08L55/00B29C48/40B29C48/92B29C48/95
CPCB29C48/92B29C2948/92704B29C48/09B29C48/40B29C2948/9258B29C2948/9259B29C2948/92828B29C2948/92866B29C2948/92885B29C2948/92895B29C2948/92904B29C2948/92933B29C48/95
Inventor 陈国南张文昌
Owner GUANGDONG LIANSU TECH INDAL
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