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Inorganic nano antibacterial plastic, and preparation method and application thereof in water supply pipe

A technology of inorganic nano and antibacterial plastics, applied in the field of plastics, can solve the problems of easy migration of antibacterial agents, decomposition failure, short antibacterial life, etc., and achieve the effect of facilitating transmission and dispersion of stress, solving agglomeration phenomenon, and high antibacterial efficiency

Active Publication Date: 2020-03-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this kind of antibacterial tube contains vermiculite powder, which contains metal ions such as magnesium, potassium, aluminum, etc., which has certain toxicity and endangers health and safety. Moreover, this antibacterial agent has the disadvantages of easy migration and short antibacterial life.
In addition, this organic polymer antibacterial agent is prone to decomposition and failure due to excessive processing temperature during processing, and the decomposed substances are toxic

Method used

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  • Inorganic nano antibacterial plastic, and preparation method and application thereof in water supply pipe
  • Inorganic nano antibacterial plastic, and preparation method and application thereof in water supply pipe
  • Inorganic nano antibacterial plastic, and preparation method and application thereof in water supply pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In parts by mass, with HDPE resin as the plastic base material, the raw material formula of inorganic nano antibacterial high-density polyethylene (HDPE) is as follows:

[0035]

[0036](1) The preparation method and processing of inorganic nanometer antibacterial agent are as follows:

[0037] First, disperse the inorganic non-metallic nano-filler in trichlorethylene solvent (Beijing Kexi Century Technology Co., Ltd.), make a slurry with a mass fraction of 15%, and use a magnetic stirring water bath (model: DF-101S, Henan Qiuzuo Instrument Equipment Co., Ltd.) heated and stirred evenly, according to the above formula, add a coupling agent, react at this temperature for 2 hours, then heat the slurry to reflux at 100 ° C, evaporate the solvent, and then dry , crushing, and sieving, and the modification of inorganic non-metallic nano-fillers is completed in this process. Afterwards, the modified inorganic non-metallic nano-filler was ground for 40 minutes with a high-...

Embodiment 2

[0041] The difference from Example 1 is that in the raw material formula of this example, nano-ZnO is used as the inorganic non-metallic nano-filler, PP-R resin is used as the plastic substrate, and other types of coupling agents and different proportions are selected.

[0042] In parts by mass, the raw material formula of inorganic nano antibacterial PP-R is as follows:

[0043]

[0044] (1) The preparation method and processing of inorganic nanometer antibacterial agent are as follows:

[0045] First, the inorganic non-metallic nanofillers were dispersed in a mixed solvent of trichlorethylene (Beijing Kexi Century Technology Co., Ltd.) and toluene (Jinbo Chemical Co., Ltd.) to form a slurry with a mass fraction of 15%. ℃ with magnetic stirring (model: DF-101S, Henan Qiuzuo Instrument Equipment Co., Ltd.) water bath heating, after stirring evenly, according to the above formula, add coupling agent, react at this temperature for 3 hours, and then put the slurry at 120 Heat...

Embodiment 3

[0049] The difference with Example 1 is: adopt nano-TiO in the raw material formula of this example 2 As an inorganic non-metallic nano filler, PP resin is used as a plastic substrate, and other types of coupling agents and different ratios are selected.

[0050] In parts by mass, the raw material formula of inorganic nano antibacterial PP is as follows:

[0051]

[0052] (1) The preparation method and processing of inorganic nanometer antibacterial agent are as follows:

[0053] First, disperse the inorganic non-metallic nano-filler into petroleum ether solvent (Shenghua Fine Chemical Group Co., Ltd.), make a slurry with a mass fraction of 20%, and use a magnetic stirring water bath at 80 °C (model: DF-101S, Henan Qiuzuo Instrument Equipment Co., Ltd.) heated, stirred evenly, added coupling agent according to the above formula, reacted at this temperature for 3 hours, then heated the slurry to reflux at 120°C, evaporated the solvent, and then dried, Crushing and sieving,...

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Abstract

The invention belongs to the field of plastics, and discloses an inorganic nano antibacterial plastic, and a preparation method and an application thereof in a water supply pipe. The inorganic nano antibacterial plastic is composed of the following raw material components by weight: 60-70 parts of matrix resin, 3-15 parts of an inorganic nonmetal nano-filler, 5-15 parts of a coupling agent, 6-12 parts of a heat stabilizer, 5-10 parts of an antioxidant and 8-15 parts of an ultraviolet light absorber. The matrix resin is PE, PP-R or PP; the inorganic nonmetal nano-filler comprises at least one of nano SiO2, nano ZnO and nano TiO2. The preparation method comprises the steps: carrying out a modification reaction on the inorganic nonmetal nano-filler and the coupling agent, carrying out high-energy ball milling to obtain an inorganic nano-antibacterial agent, and carrying out mixing extrusion on the inorganic nano-antibacterial agent, matrix resin, the heat stabilizer, the antioxidant and the ultraviolet light absorber to obtain the inorganic nano antibacterial plastic. The obtained product has the advantages of lasting antibacterial effect, high antibacterial efficiency and the like.

Description

technical field [0001] The invention belongs to the field of plastics, and in particular relates to an inorganic nano antibacterial plastic, a preparation method thereof and an application in a water supply pipe. Background technique [0002] At present, with the improvement of the quality of life, people's drinking water quality and safety issues have received more and more attention. These issues related to people's safety cannot be ignored. At present, cities and rural areas are basically using uniformly treated tap water. In the last century and before, the materials of water supply pipes used to convey tap water were generally metal pipes, alloy pipes, etc. These pipes are expensive to manufacture, easily corroded after long-term use, and have defects such as short service life and non-bacterial properties. In order to make up for the above shortage of water supply pipe materials, in the past ten years, a large number of plastic water supply pipes represented by PE, PP...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/12C08K13/06C08K9/04C08K3/22C08K9/06C08K3/36C08K5/134F16L9/12F16L57/00
CPCC08K13/06C08K9/06C08K9/04C08K3/22C08K3/36C08K5/1345F16L9/12F16L57/00C08L2203/18C08L2201/08C08K2201/011C08K2003/2241C08K2003/2296C08L2207/062C08L23/06C08L23/12
Inventor 牟文杰黄超杰黄佳美赵良知
Owner SOUTH CHINA UNIV OF TECH
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