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Antibacterial double-layer polyethylene tube

A polyethylene pipe, double-layer technology, applied in the field of double-layer polyethylene water pipes, can solve the problems of no antibacterial long-term effect, complex process, easy loss of antibacterial agents, etc., to achieve safe and reliable use, strong adaptability to the environment, The effect of low overall cost

Active Publication Date: 2013-01-02
ZHEJIANG XINDA PLASTIC PIPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with the first type of method is that the antibacterial agent is easily lost due to the high pressure and impact force during the application process of the polyethylene water pipe, and it does not have long-term antibacterial effect; the second type of method is effective, but the process is complicated

Method used

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  • Antibacterial double-layer polyethylene tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] First prepare the carbon nanotubes modified by nano silver particles according to the following steps:

[0032] Dissolve 0.1mol of silver nitrate in 250mL of water, add 250ml of ammonia water with a mass concentration of 10%, and stir for 30 minutes after the addition is completed to form an alkaline aqueous solution of silver ammonia complex; add 10g of carbon nanotubes to 100ml with a mass concentration of 25 % hydrogen peroxide, mixed evenly and left for 10 minutes, then added to the alkaline aqueous solution of silver-ammonia complex prepared in step 1) to carry out the reduction reaction. After the end, the precipitate was separated and 200ml of methanol was added, washed several times, and the obtained brown-black solid That is nano-silver particles modified carbon nanotubes.

[0033]Choose MI at 10-12g / 10min; density 0.915g / cm 3 LDPE resin; the selected density is 0.963g / cm 3 , HDPE resin with a melt index of 12g / 10min.

[0034] In addition, the material ratio...

Embodiment 2

[0039] First prepare the carbon nanotubes modified by nano silver particles according to the following steps:

[0040] Dissolve 0.2mol of silver nitrate in 250mL of water, add dropwise 100ml of ammonia water with a mass concentration of 10%, and stir for 30 minutes after the addition is completed to form a silver-ammonia complex alkaline aqueous solution; add 50g of carbon nanotubes to 450ml with a mass concentration of 25 % hydrogen peroxide, mix well and place it for 30 minutes, add it to the alkaline aqueous solution of silver ammonia complex prepared in step 1) to carry out the reduction reaction, separate the precipitate after the end and add 300ml methanol, wash it three times, and the obtained brown-black solid is Modified carbon nanotubes for nano silver particles.

[0041] Choose MI at 2g / 10min; density 0.921g / cm 3 LDPE resin; the selected density is 0.967g / cm 3 , HDPE resin with a melt index of 32g / 10min.

[0042] In addition, the material ratio of the inner layer...

Embodiment 3

[0047] First prepare the carbon nanotubes modified by nano silver particles according to the following steps:

[0048] Dissolve 0.1mol of silver nitrate in 250mL of water, add 100ml of ammonia water with a mass concentration of 5% dropwise, and stir for 60 minutes after the addition is completed to form a silver-ammonia complex alkaline aqueous solution; add 2g of carbon nanotubes to 100ml with a mass concentration of 25 % hydrogen peroxide, mix well and place it for 60 minutes, add it to the alkaline aqueous solution of silver-ammonia complex prepared in step 1), and carry out the reduction reaction. After the end, separate the precipitate and add 200ml petroleum ether, wash it five times, and the obtained brown-black The solid is nano-silver particle-modified carbon nanotube.

[0049] Choose MI at 1g / 10min; density 0.913g / cm 3 LDPE resin; the selected density is 0.966g / cm 3 , HDPE resin with a melt index of 6g / 10min.

[0050] In addition, the material ratio of the inner l...

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Abstract

The invention relates to an antibacterial double-layer polyethylene tube, wherein the antibacterial double-layer polyethylene tube utilizes HDPE (high-density polyethylene) resin as an outer layer and LDPE (Low-Density Polyethylene) resin as an inner layer, and a nano-silver particle modified carbon nano tube accounting for 0.01-10wt% of the LDPE resin on the inner layer is mixed in the inner layer. According to the invention, the carbon nano tube is decorated by the silver particles to improve the dispersibility of the carbon nano tube in the polyethylene material, and the prepared antibacterial double-layer polyethylene tube is free from toxic side effects, temperature-resistant, antibacterial, strong in environmental adaptability, good in cost performance, simple in processing, convenient, safe and reliable in application, high in strength, excellent in toughness, strong in impact resistance, difficult to age, break and permeate, and low in comprehensive cost.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a double-layer polyethylene water delivery pipe with antibacterial function. Background technique [0002] Polyethylene is the simplest polymer organic compound and one of the most widely used polymer materials in the world today. Polyethylene is polymerized from ethylene and can be made into various application materials. Pipes are one of the most important ones. Compared with pipes made of other materials, PE pipes have the following characteristics: 1) Good hygienic performance: when PE pipes are processed No heavy metal salt stabilizer is added, the material is non-toxic, has no scaling layer, and does not breed bacteria, which solves the secondary pollution of urban drinking water; 2) Excellent corrosion resistance: except for a few strong oxidants, it can withstand many 3) Long service life: PE pipes can be safely used for more than 50 years under rated temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B1/08B32B27/08B32B27/32B32B27/20B82Y5/00B82Y30/00C08L23/06C08K13/06C08K9/02C08K7/00C08K3/04
Inventor 王立君
Owner ZHEJIANG XINDA PLASTIC PIPE
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