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An antibacterial ppr pipe

A pipe and antibacterial agent technology, applied in the field of antibacterial PPR pipes, can solve the problems of long reaction time and complicated process, and achieve the effect of low cost, simple preparation process and strong antibacterial effect

Active Publication Date: 2016-03-02
HENAN LIANSU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods for preparing silver-loaded silica antibacterial materials mainly include calcination and chemical reduction. The calcination method has the disadvantages of complicated process and long reaction time. If the chemical reduction method can be used to directly adsorb silver ions on silica in solution The surface can be reduced to simple silver at the same time, the process is simple, the reaction conditions are mild, and the cost is low, which will greatly facilitate its production and promotion in industry

Method used

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  • An antibacterial ppr pipe

Examples

Experimental program
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Effect test

Embodiment 1

[0027] (1) Preparation of silica-loaded nano-silver antibacterial agent

[0028] Stir 0.01g of silver nitrate, 50ml of tetraethyl orthosilicate, 400ml of absolute ethanol and 40ml of ammonia water at 35°C for 4 hours at a constant temperature; filter the obtained product, wash with water, and dry to obtain a silica powder that adsorbs silver ammonium ions. Disperse the silica powder adsorbed with silver ammonium ions in water, add a sodium borohydride aqueous solution with a concentration of 0.01g / mL dropwise at a rate of 0.042mL / min for 60min, and prepare silica-loaded nano Silver antibacterial agent suspension; then filter the obtained silicon dioxide-loaded nano-silver antibacterial agent suspension, wash with water, and dry to obtain silicon dioxide-loaded nano-silver antibacterial agent powder.

[0029] (2) Preparation of antibacterial PPR pipe

[0030] After the silica-loaded nano-silver antibacterial agent with a weight of 2% of all components is treated with a silane ...

Embodiment 2

[0033] (1) Preparation of silica-loaded nano-silver antibacterial agent

[0034] Stir 0.06g of silver nitrate, 60ml of tetraethyl orthosilicate, 400ml of absolute ethanol and 40ml of ammonia water at a constant temperature of 35°C for 5h; filter the obtained product, wash it with water, and dry it to obtain a silica powder that adsorbs silver ammonium ions. Disperse the silica powder adsorbed with silver ammonium ions in water, add a sodium borohydride aqueous solution with a concentration of 0.02 g / mL dropwise at a rate of 0.1 mL / min for 30 min, and prepare silica-loaded nano Silver antibacterial agent suspension; then filter the obtained silicon dioxide-loaded nano-silver antibacterial agent suspension, wash with water, and dry to obtain silicon dioxide-loaded nano-silver antibacterial agent powder.

[0035] (2) Preparation of antibacterial PPR pipe

[0036] After the silica-loaded nano-silver antibacterial agent with a weight of 1.8% of all components is treated with a sil...

Embodiment 3

[0039] (1) Preparation of silica-loaded nano-silver antibacterial agent

[0040] Stir 0.12g of silver nitrate, 60ml of tetraethyl orthosilicate, 450ml of absolute ethanol and 45ml of ammonia water at 35°C for 6 hours at a constant temperature; filter the obtained product, wash it with water, and dry it to obtain a silica powder that adsorbs silver ammonium ions. Disperse the silica powder adsorbed with silver ammonium ions in water, add a sodium borohydride aqueous solution with a concentration of 0.01g / mL dropwise at a rate of 1mL / min for 40min, and prepare silica-loaded nano-silver Antibacterial agent suspension; then filter the obtained silicon dioxide-loaded nano-silver antibacterial agent suspension, wash with water, and dry to obtain silicon dioxide-loaded nano-silver antibacterial agent powder.

[0041] (2) Preparation of antibacterial PPR pipe

[0042]After the silica-loaded nano-silver antibacterial agent with a weight of 1.5% of all components is treated with a sila...

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Abstract

The invention belongs to the technical field of pipes, and in particular relates to an antibacterial PPR pipe. An antibacterial PPR pipe, which is composed of the following raw materials by weight percentage: 0.3-2% of nano-silver antibacterial agent loaded on silicon dioxide, 94-95.7% of PPR raw material, 2% of toner, and 2% of antioxidant; wherein, the two The silicon oxide-loaded nano-silver antibacterial agent is prepared by mixing and stirring silver nitrate, tetraethyl orthosilicate, absolute ethanol and ammonia water, and reducing them with a reducing agent. The invention realizes good dispersion of nano-silver particles in the PPR tube, effectively exerts the strong antibacterial effect of nano-silver particles, thereby reducing the amount of nano-silver ions and reducing costs; effectively prevents bacterial growth, eliminates common bacteria in water bodies, and ensures The water is hygienic and clean; the process is simple, the reaction conditions are mild, and the cost is low, which greatly facilitates its industrial production and popularization.

Description

technical field [0001] The invention relates to the technical field of pipes, in particular to an antibacterial PPR pipe. Background technique [0002] PPR pipes have the advantages of heat resistance, pressure resistance, heat preservation and energy saving, and long service life. They have been widely used in water supply systems in buildings. Some substances similar to mucous membranes will form a large amount of scale impurities when they are severely derivatized, which is difficult to wash away through the natural pressure of water, seriously affecting water quality. Therefore, it is necessary to improve the antibacterial properties of PPR plastic pipes. Silver ions and silver-containing compounds can kill or inhibit bacteria, viruses, algae and fungi. It has the effect of fighting diseases, and is also known as a biophilic metal. The most important compound of silver is silver nitrate. In medical treatment, an aqueous solution of silver nitrate is commonly used as ey...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08K9/12C08K3/08B29B9/06
CPCB29B9/06B29C48/92B29C2948/92704C08K3/08C08K9/06C08K9/12C08K2003/0806C08K2201/011C08L2203/18C08L2207/14C08L23/14
Inventor 代营伟
Owner HENAN LIANSU IND
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