Antibacterial plastic for washing machine and preparation method thereof

A technology of antibacterial plastics and washing machines, which is applied in the field of antibacterial plastics for washing machines and its preparation, which can solve the problems of short duration, easy discoloration, and small antibacterial range, and achieve improved antibacterial and bactericidal capabilities, good anti-ultraviolet aging capabilities, and reduced The effect of decreased antibacterial performance

Active Publication Date: 2019-06-21
ZHEJIANG GOLD SEA GULL ELECTRIC APPLIANCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic antibacterial agents mainly include quaternary ammonium salts, ethers, phenols, thiazoles, diphenyl ether compounds, etc., which are characterized by fast sterilization speed and wide antibacterial spectrum, but their antibacterial function has poor heat resistance and short antibacterial validity period. , Long-term use has dissolution and precipitation
Inorganic antibacterial agents are mainly silver, zinc plasma and their compounds or complexes, which are characterized by good heat resistance, wide antibacterial spectrum, high safety, and long antibacterial validity period, but they are highly toxic to the human body and easy to change color. It is difficult to disperse evenly in the product, the dosage is relatively large, the cost is high and it will cause environmental pollution
Antibacterial plastics in the current prior art generally have poor strength, are easily damaged, have high product costs, unstable quality, small antibacterial range, and short duration

Method used

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  • Antibacterial plastic for washing machine and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Prepare antibacterial plastic for washing machine through the following steps:

[0022] (1) Preparation of polymer: 700g acrylonitrile, 300g styrene, 20g vinyl siloxane, 10g sodium 2-acrylamido-2-methylpropanesulfonate, 100g butadiene, 50g vinyl pyridine and 5g of azobisisobutyronitrile was dissolved in 3000g of N,N-dimethylformamide, and the polymerization reaction was carried out under the protection of an inert atmosphere. The reaction temperature was 50°C and the reaction time was 8 hours. After the reaction, it was dissolved, precipitated, washed and Drying to obtain a polymer;

[0023] (2) Polymer ionization: the polymer prepared in step (1) is added to a 20% iodomethane acetonitrile solution, soaked at 50°C for 10 hours, then washed and dried;

[0024] (3) Ion exchange: the polymer obtained in step (2) is added to a 20% sodium benzotriazole aqueous solution, soaked at 50°C for 72 hours, then washed and dried, and then the product is added to the mass Soak in a 20% sil...

Embodiment 2

[0027] Prepare antibacterial plastic for washing machine through the following steps:

[0028] (1) Preparation of polymer: 700g acrylonitrile, 300g styrene, 25g vinyl siloxane, 15g sodium 2-acrylamido-2-methylpropanesulfonate, 120g butadiene, 60g vinyl pyridine and 5g of azobisisobutyronitrile was dissolved in 4000g of dimethyl sulfoxide, and the polymerization reaction was carried out under the protection of an inert atmosphere. The reaction temperature was 70°C and the reaction time was 7 hours. After the reaction, the polymer was obtained by dissolution, precipitation, washing and drying;

[0029] (2) Polymer ionization: Add the polymer prepared in step (1) to a 25% iodoethane acetonitrile solution, soak at 50°C for 10 hours, then wash and dry;

[0030] (3) Ion exchange: Add the polymer obtained in step (2) to a 25% sodium pentachlorophenate aqueous solution, soak at 50°C for 72 hours, then wash and dry, and then add the product to a mass fraction of Soak in 25% silver nitrate aq...

Embodiment 3

[0033] Prepare antibacterial plastic for washing machine through the following steps:

[0034] (1) Preparation of polymer: 700g acrylonitrile, 300g styrene, 27g vinyl siloxane, 16g sodium 2-acrylamido-2-methylpropanesulfonate, 130g butadiene, 70g vinyl pyridine and 5g of azobisisobutyronitrile was dissolved in 4500g of N-methylpyrrolidone, and the polymerization reaction was carried out under the protection of an inert atmosphere. The reaction temperature was 80°C and the reaction time was 6 hours. After the reaction, the polymer was obtained by dissolution, precipitation, washing and drying. ;

[0035] (2) Polymer ionization: The polymer prepared in step (1) is added to a 28% mass fraction of 1-iodopropane acetonitrile solution, soaked at 50°C for 10 hours, then washed and dried;

[0036] (3) Ion exchange: add the polymer obtained in step (2) to a 27% sodium diacetate aqueous solution, soak at 50°C for 72 hours, then wash and dry, and then add the product to a mass fraction of 28 ...

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Abstract

The invention provides an antibacterial plastic for washing machines and a preparation method thereof. The preparation method comprises the following steps: (1) dissolving acrylonitrile, styrene, vinyl siloxane, sodium 2-acrylamido-2-propanesulfonate, butadiene, vinyl pyridine and an initiator in a polar solvent, and carrying out polymerization reaction in an inert protective atmosphere to obtain a polymer; (2) adding the polymer prepared by the step (1) into a halohydrocarbon acetonitrile solution, soaking for some time, washing, and drying; (3) adding the polymer obtained in the step (2) into a sodium salt solution, soaking for some time, washing, drying, adding the product into a silver nitrate solution, soaking for some time, washing and drying, wherein the sodium salt is selected from one or more of sodium benzotriazole, sodium pentachlorophenate and sodium diacetate; and (4) mixing the nano titanium dioxide with the polymer prepared in the step (3), and carrying out extrusion forming to obtain the antibacterial plastic.

Description

Technical field [0001] The invention relates to the technical field of polymer materials, in particular to an antibacterial plastic for washing machines and a preparation method thereof. Background technique [0002] With the continuous improvement of people’s living standards and the increasing awareness of health and environmental protection, higher requirements have been placed on plastic products that are in direct or indirect contact. In addition to having good mechanical properties and anti-aging properties, it also increases Antibacterial, sterilization and other requirements. Antibacterial plastics usually add antibacterial agents to plastic products to make plastics have inherent antibacterial properties. Compared with conventional chemical and physical disinfection methods, the use of antibacterial plastics for sterilization is highly efficient and long-lasting, economical and convenient. [0003] At present, the commonly used plastic antibacterial agents include inorgan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/20C08K13/02C08K3/22C08K5/3475C08K5/098C08K5/138C08F220/48C08F236/12C08F212/08C08F226/06C08F230/08C08F220/58C08F8/24
CPCC08F8/24C08F220/48C08K3/22C08K5/098C08K5/138C08K5/3475C08K13/02C08K2003/2241C08K2201/011C08L33/20C08F236/12C08F212/08C08F226/06C08F230/08C08F220/585
Inventor 贺国忠
Owner ZHEJIANG GOLD SEA GULL ELECTRIC APPLIANCE CO LTD
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