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Double-wall corrugated pipe with wear-resistant inner wall and preparation method thereof

A double-wall corrugated pipe and corrugated pipe technology, applied in the field of pipe material preparation, can solve the problems of difficult compound formation of double-wall welding, poor fluidity, and inability to be processed by extrusion processing methods, so as to avoid peeling and cracking, simple production process, and easy processing good performance

Active Publication Date: 2017-07-25
LINHAI WEIXING NEW BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although UHMWPE has excellent wear resistance, its molecular weight is generally more than 1 million, and its fluidity is extremely poor. It cannot be processed by extrusion processing, and it is difficult to form a double-wall fusion with the outer wall polyethylene or other materials.

Method used

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  • Double-wall corrugated pipe with wear-resistant inner wall and preparation method thereof
  • Double-wall corrugated pipe with wear-resistant inner wall and preparation method thereof
  • Double-wall corrugated pipe with wear-resistant inner wall and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this embodiment, smooth pipe inner wall matrix 1 is the following raw materials in parts by weight:

[0029] 50 parts of LLDPE, 50 parts of POE, 10 parts of UHMWPE, 4 parts of vinyltriethoxysilane, 0.2 parts of dibenzoyl peroxide, 0.2 parts of propylamine, 35 parts of wollastonite, 7 parts of calcium stearate; polyethylene The material of bellows layer 2 is PE100 grade.

[0030] The preparation process of the pipe is as follows:

[0031] 1) Dissolve the initiator dibenzoyl peroxide and amine catalyst propylamine in xylene solvent according to the amount of feed, and configure an initiator solution with a total concentration of 8%, and then mix the configured initiator solution, UHMWPE, vinyl Triethoxysilane was added to the high-speed mixer and mixed for 40 minutes. The speed of the high-speed mixer was 500rpm, and then LLDPE, filler wollastonite, and lubricant calcium stearate were added, and the material was mixed and discharged at a low speed of 80rpm, and then e...

Embodiment 2

[0034] In this embodiment, smooth pipe inner wall matrix 1 is the following raw materials in parts by weight:

[0035] 60 parts of LDPE, 60 parts of POE, 30 parts of UHMWPE, 8 parts of vinyltrimethylethoxysilane, 0.1 part of dicumyl peroxide, 0.1 part of t-butyl peroxy tert-butyl valerate, 0.1 part of ethylamine, 50 parts of calcium carbonate 5 parts of polyethylene wax; the material of polyethylene corrugated pipe layer 2 is PE80 grade material;

[0036] Its preparation process is the same as in Example 1, the total concentration of the initiator solution in step 1) is 10%, add in the high-speed mixer and mix for 30min, the speed of the high-speed mixer is 700rpm, and the mixing discharge speed is 90rpm. The temperature of the extruder is 150°C , the speed of the main engine is controlled so that the residence time of the material in the extruder is 4 minutes; the temperature of the extruder in step 2) is 180°C.

Embodiment 3

[0038] In this embodiment, smooth pipe inner wall matrix 1 is the following raw materials in parts by weight:

[0039] 20 parts of LDPE, 20 parts of HDPE, 40 parts of POE, 50 parts of UHMWPE, 4 parts of vinyltrimethoxysilane, 4 parts of vinyltrimethylethoxysilane, 0.3 parts of dicumyl peroxide, 0.3 parts of propylamine, talcum powder 20 parts, 8 parts of stearic acid; the material of polyethylene bellows layer 2 is PE100 grade.

[0040] Its preparation process is the same as in Example 1, the total concentration of the initiator solution in step 1) is 12%, add in the high-speed mixer and mix for 20min, the speed of the high-speed mixer is 600rpm, and the mixing discharge speed is 95rpm. The temperature of the extruder is 230°C , the speed of the main engine is controlled so that the residence time of the material in the extruder is 2 minutes; the temperature of the extruder in step 2) is 220°C.

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Abstract

The invention discloses a double-wall corrugated pipe with a wear-resistant inner wall and a preparation method thereof. The double-wall corrugated pipe comprises a pipe inner wall base and a polyethylene corrugated pipe layer, the pipe inner wall base comprises, by weight, 50 to 80 parts of PE, 50 to 80 parts of POE, 10 to 50 parts of UHMWPE, 1 to 10 parts of silane, 0.1 to 0.5 parts of an initiator, 0.1 to 0.5 parts of an amine catalyst, 10 to 50 parts of a filler and 2 to 10 parts of a lubricant. After mortar swinging friction on the inner wall of the pipe 100000 times, the double-wall corrugated pipe with a wear-resistant inner wall has a wear rate reduced to 2% or less from 5% and improves wear resistance by 1 time or more. The double-wall corrugated pipe has physical and mechanical properties satisfying the national standard requirements, improves inner wall wear resistance, effectively prolongs a pipe service life and can be widely used in a sewage pipe network, drainage in residential quarters, rain and sewage diversion, industrial park wastewater discharge and drainage of large facilities.

Description

technical field [0001] The invention belongs to the technical field of pipe material preparation, and in particular relates to a wear-resistant double-wall corrugated pipe with an inner wall widely used in the fields of drainage and sewage pipe network construction and a preparation method thereof. Background technique [0002] With the acceleration of urbanization in my country, the construction scale of underground pipe network systems is expanding day by day. Double-wall corrugated pipes are widely used in drainage and sewage pipe network projects by virtue of their significant advantages such as corrosion resistance, light weight, convenient installation, and low comprehensive engineering cost. developed rapidly. However, in practical applications, since various sediments often exist in the fluid transported by the pipeline, different degrees of impact and cutting will occur on the inner wall, which will easily cause the wear of the pipe wall. The inner wall of the doubl...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L51/06C08L23/06C08K3/34C08K3/26C08K5/098C08F255/02C08F230/08B29D23/18F16L9/133F16L57/06
Inventor 陆国强陈昆李其才林鑫鑫
Owner LINHAI WEIXING NEW BUILDING MATERIALS CO LTD
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