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A kind of pressure-resistant impact-resistant PE pipe and its preparation method

An impact-resistant and pipe technology, applied in the field of pressure-resistant and impact-resistant PE pipes and their preparation, can solve problems such as poor compressive strength of PE pipes

Active Publication Date: 2020-05-12
芜湖万隆新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of poor compressive strength of existing PE pipes, and provide a pressure-resistant and impact-resistant PE pipe and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] According to the present invention, the preparation method of the described coupled inorganic silica comprises:

[0024] Mix and grind sheet-like potassium aluminum silicate, dispersant, silane coupling agent and deionized water to obtain coupled inorganic silica. The mass percentage of the sheet potassium aluminum silicate, dispersant, silane coupling agent and deionized water is preferably 80:(1.5-2):(2.5-2):16. The diameter-thickness ratio of the sheet potassium aluminum silicate is (50-100); the specific surface area is (BET 10-50), and the oil absorption value is (DOP≤50). The present invention should strictly control the thickness of the sheet potassium aluminum silicate. When the diameter-thickness ratio, specific surface area and oil absorption value are too high or too low, the self-dispersion effect of inorganic nano-sheet silica and the dispersion effect in polyethylene matrix will be reduced.

[0025] According to the present invention, the grinding can be ...

Embodiment 1

[0033] Sheet-shaped potassium aluminum silicate (diameter-thickness ratio: 80, specific surface area: 20, oil absorption value: 30) after dedusting and impurity removal, take 80 parts of sheet-shaped potassium aluminum silicate, 2 parts of dispersant BYK163, silane coupling agent KH560 2 parts, 16 parts of deionized water, high-speed wet grinding for 10 hours, grinding until the particle size of the inorganic powder reaches 500nm, and spray drying to obtain the coupled inorganic silica (LS-0.5).

[0034] Take 80 parts of high-density polyethylene, 2.5 parts of heat stabilizer 1010, 5 parts of toughening agent POE, 0.5 parts of dispersant BYK163, 2 parts of paraffin, and 10 parts of coupled inorganic silica (LS-0.5). The twin-screw extruder melts and blends, extrudes, granulates, dries at 120°C, and then extrudes through a 175°C single-screw extruder to obtain PE pipes.

[0035] The pressure resistance and impact resistance mechanical properties of the prepared PE pipe were tes...

Embodiment 2

[0037] Sheet-shaped potassium aluminum silicate (diameter-thickness ratio: 80, specific surface area: 20, oil absorption value: 30) after dedusting and impurity removal, take 80 parts of sheet-shaped potassium aluminum silicate, 2 parts of dispersant BYK163, silane coupling agent KH560 2 parts, 16 parts of deionized water, high-speed wet grinding for 6 hours, grinding until the particle size of the inorganic powder reaches 2 μm, and spray drying to obtain the coupled inorganic silica (LS-2).

[0038] Take 80 parts of high-density polyethylene, 2.5 parts of heat stabilizer 1010, 5 parts of toughening agent POE, 0.5 parts of dispersant BYK163, 2 parts of paraffin, and 10 parts of coupled inorganic silica (LS-2). The twin-screw extruder melts and blends, extrudes, granulates, dries at 120°C, and then extrudes through a 175°C single-screw extruder to obtain PE pipes.

[0039] The pressure resistance and impact resistance mechanical properties of the prepared PE pipe were tested, t...

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PUM

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Abstract

The invention provides a pressure-resistant impact-resistant PE pipe material and a preparation method thereof, and belongs to the technical field of PE pipe materials. The pressure-resistant impact-resistant PE pipe is composed of the following components in parts by weight: 60-80 parts of polyethylene, 5-30 parts of coupled inorganic silica, 2-10 parts of heat stabilizer, 0.5-2 parts of dispersing agent, 0.5-3 parts of toughening agent, and 0.5-5 parts of paraffin. The invention also provides a preparation method of the pressure-resistant impact-resistant PE pipe material. The PE pipe material of the invention has good pressure and impact resistance.

Description

technical field [0001] The invention belongs to the technical field of PE pipes, and in particular relates to a pressure-resistant and impact-resistant PE pipe and a preparation method thereof. Background technique [0002] Most of the pipes on the market are made of polymer materials such as PE, PVC, PTFE, etc., which are not corroded by sewage, waste water and chemicals, and are not corroded by rotten substances in the soil. The chemical substances in the soil will not cause any degradation to the pipes. Function, anti-aging, long service life. As a pipe, the strength of PTFE pipe is sufficient, but the cost is too high. The ordinary engineering plastic PVC material has better strength and lower cost than PE, but PVC is relatively brittle and is gradually eliminated by the market, while PE has toughness (impact resistance) It is better than PVC and has a certain degree of windability. Compared with steel pipes, PE has better wear resistance, which means that PE has a long...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L91/06C08L23/08C08K13/06C08K9/06C08K7/00C08K3/34
Inventor 周光远李璐姜国伟
Owner 芜湖万隆新材料有限公司
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