Noise-reducing polyethylene composite material for drainage pipeline of building and preparation method thereof

A technology for building drainage and composite materials, which is applied in the field of polyethylene sound-absorbing composite materials for building drainage pipes and its preparation, can solve the problems of failing to meet environmental protection requirements, and achieve high oxidation induction time, unchanged hydrostatic performance, and mechanical properties Improved effect

Active Publication Date: 2014-04-30
ZHEJIANG WEIXING NEW BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, most of the current research is to change the physical structure of the pipeline, but this method does not

Method used

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  • Noise-reducing polyethylene composite material for drainage pipeline of building and preparation method thereof
  • Noise-reducing polyethylene composite material for drainage pipeline of building and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1:

[0031] (1) Formula: 40 parts by weight of high-density polyethylene, 0.015 parts by weight of dicumyl peroxide, 0.8 parts by weight of vinyl trimethoxysilane, 50 parts by weight of activated nano-scale barium sulfate, activation Treated 1200 mesh barium sulfate 10 parts by weight, polyethylene wax 2 parts by weight, titanium dioxide 4 parts by weight, antioxidant 1010 0.3 parts by weight, antioxidant 168 0.3 parts by weight, and carbon black 2 parts by weight number.

[0032] (2) Preparation process: weigh the above formula and add it to a high-speed mixer, stir at 25°C for 5 minutes, and then discharge the material for later use. Add the mixed material into the extruder for granulation. The process conditions of the extruder:

[0033] The length-to-diameter ratio of the extruder is L / D=44:1, the number of heating sections of the extruder is 12, and the vacuum extraction port is opened in the 9th heating section, and the processing temperature gradually i...

Example Embodiment

[0036] Example 2:

[0037] (1) Formula: 30 parts by weight of high-density polyethylene, weight ratio of 1:1 mixture of di-tert-butane and 1,3-di-tert-butyl dicumyl peroxide, 0.02 parts by weight, dimethyl 0.8 parts by weight of vinyl ethoxysilane, 50 parts by weight of activated nano-scale barium sulfate, 20 parts by weight of activated 1200 mesh barium sulfate, 2 parts by weight of polyethylene wax, 4 parts by weight of titanium dioxide Number, antioxidant 1010 0.3 parts by weight, antioxidant 168 0.3 parts by weight, and carbon black 2 parts by weight.

[0038] (2) Preparation process: weigh the above formula and add it to a high-speed mixer, stir at 25°C for 5 minutes, and then discharge the material for later use. Add the mixed material into the extruder for granulation. The process conditions of the extruder:

[0039] The length-to-diameter ratio of the extruder is L / D=44:1, the number of heating sections of the extruder is 12, and the vacuum extraction port is opened in ...

Example Embodiment

[0040] Example 3:

[0041] (1) Formula: 30 parts by weight of high-density polyethylene, 0.01 parts by weight of 2,5-dimethyl-2,5 bis(tert-butylperoxy)hexyne, methyl vinyl diethoxy silane 0.5 parts by weight, 40 parts by weight of activated nano-barium sulfate, 20 parts by weight of activated 1200 mesh barium sulfate, 2 parts by weight of polyethylene wax, 4 parts by weight of titanium dioxide, 168 parts by weight of antioxidant 0.3 parts by weight, 2 parts by weight of carbon black.

[0042] (2) Preparation process: weigh the above formula and add it to a high-speed mixer, stir at 25°C for 5 minutes, and then discharge the material for later use. Add the mixed material into the extruder for granulation. The process conditions of the extruder:

[0043] The length-to-diameter ratio of the extruder is L / D=44:1, the number of heating sections of the extruder is 12, and the vacuum extraction port is opened in the 9th heating section, and the processing temperature gradually incr...

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Abstract

The invention relates to a noise-reducing polyethylene composite material for a drainage pipeline of a building and a preparation method thereof, belonging to the technical field of inorganic powder modified high-molecular polymers. The material comprises the following raw materials in parts by weight: 30-50 parts of polyethylene, 0.01-0.02 part of a peroxide initiator, 0.5-1 part of vinyl unsaturated silane, 50-60 parts of barium sulfate, 1-3 parts of a dispersant, 3-5 parts of titanium dioxide, 0.2-0.5 part of an antioxidant and 1-3 parts of carbon black. The material provided by the invention effectively solves the problem that existing drainage pipeline of the building is noisy and poor in high temperature resistance and chemical corrosion resistance. Raw materials are input to a high speed mixer to be mixed firstly, and then pelleted through a twin-screw extruder to obtain the composite material. The composite material provided by the invention has the advantages of mute-resistant effect, chemical corrosion resistance, heat resistance and shock resistance of a common tubular product, simple processing process, low cost and suitability of preparing the drainage pipeline of the building.

Description

technical field [0001] The invention belongs to the technical field of inorganic powder modified high molecular polymers, and in particular relates to a polyethylene sound-absorbing composite material for building drainage pipes and a preparation method thereof. Background technique [0002] As a general-purpose resin, polyethylene has excellent mechanical properties and processing properties, occupies an important position in plastics, and is increasingly used as a raw material for building drainage pipes, but its sound insulation performance is far from satisfying Require. With the improvement of living standards, people pay more and more attention to the noise problem in the building room. At present, the noise of the building's indoor drainage system is generally greater than 45 decibels, which has seriously affected people's home life. The main ways to solve the indoor drainage noise are Two types: change the physical structure of the pipeline and optimize the material...

Claims

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Application Information

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IPC IPC(8): C08L51/06C08K13/06C08K9/06C08K9/04C08K3/30C08K3/22C08K3/04C08F255/02C08F230/08
Inventor 闫立军段景宽冯金茂王登勇陶岳杰
Owner ZHEJIANG WEIXING NEW BUILDING MATERIALS CO LTD
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