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Antibacterial plastic for household appliances and preparation method thereof

A technology for antibacterial plastics and home appliances, applied in the field of polymer engineering plastics, can solve the problems of high cost of use, color of copper ions, active chemical properties, etc., and achieve the effects of improving strength, good antibacterial effect, and improving antibacterial performance.

Active Publication Date: 2012-09-19
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silver ions have the strongest antibacterial properties, but their chemical properties are active, and they are easily converted into brown silver oxide or black elemental silver, so they should not be used in large quantities in white household appliances.
The antibacterial strength of zinc is only 1 / 1000 of that of silver; copper ions are colored, and a large amount of use will affect the appearance of the product
Although metal ions are quick to kill bacteria, the cost of using a large amount is high, and the release of heavy metal ions will have adverse effects on the environment and human health
The latter has high photocatalytic activity, strong antibacterial persistence, low price and non-toxicity, and strong self-cleaning function. Light exposure applications are limited

Method used

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  • Antibacterial plastic for household appliances and preparation method thereof
  • Antibacterial plastic for household appliances and preparation method thereof
  • Antibacterial plastic for household appliances and preparation method thereof

Examples

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Effect test

preparation example Construction

[0049] In the preparation method of the above-mentioned antibacterial plastic for household appliances, after mixing various raw materials uniformly, the antibacterial plastic for household appliances can be prepared by blending at a temperature range of 170-240°C. If the temperature is too low, the material will not be plasticized well in the extruder, and if the temperature is too high, the polymer material will be oxidized and decomposed to destroy the molecular structure.

[0050] Wherein, in the above method, an extruder is used for blending, the heating temperature is 170-230°C, and the extruding temperature of the head is 200-235°C.

[0051] Further, when blending, the screw speed of the extruder host is 10-50 r / min, the feeding speed is 5-30 r / min; the blending time is 1-6 minutes.

[0052] Further, the blending time is preferably 2 minutes.

Embodiment 1

[0054] The preparation and performance of embodiment one antibacterial plastics of the present invention

[0055] Weigh various raw materials according to the raw material formula in Table 1, wherein the resin is selected as ABS resin (the content of acrylonitrile is 20%, the Vicat softening point is 103°C, and under the conditions of 200°C and 10Kg, its melt index is 23g / 10min ); the antibacterial agent is a silver-loaded nano-titanium dioxide antibacterial agent (the particle size of the composite powder is less than 30nm, and the weight ratio of silver to titanium dioxide is: silver: titanium dioxide = 3:100); toughening agent (methyl acrylate-butadiene - Styrene terpolymer, wherein the weight percent content of methyl acrylate is 25%, the content of butadiene is 15%, and the content of styrene is 60%); the coupling agent is silane coupling agent KH560; ABS, antibacterial agent Dry at 80°C for 4 hours before use; add various raw materials (including auxiliary antioxidants, ...

Embodiment 2

[0056] Preparation and performance of embodiment two antibacterial plastics

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Abstract

The invention discloses an antibacterial plastic used for household appliances and being good in antibacterial effect and a preparation method thereof, and belongs to the technical field of macromolecular engineering plastics. The antibacterial plastic used for the household appliances is made by mainly blending 70-95 parts of resin, 2-10 parts of metal ion and photocatalyst mixed type inorganic antibacterial agents, 5-30 parts of flexibilizers, 0.1-1.5 parts of coupling agents and 0.05-0.4 part of antioxidants. The preparation method of the antibacterial plastic comprises evenly mixing various raw materials, and obtaining the antibacterial plastic used for the household appliances by blending at a temperature range of 170-240 DEG C. The antibacterial performance of the antibacterial plastic can meet the national newly-issued standard GB21551.2-2010 and can be widely applied to refrigerators, washing machines, air conditioners, televisions, cell phones and computer products.

Description

technical field [0001] The invention belongs to the technical field of polymer engineering plastics, and in particular relates to an antibacterial plastic for household appliances and a preparation method thereof. Background technique [0002] In daily life, quite a number of harmful bacteria exist and multiply on the surface of plastic products, and cause various diseases through contact. As people's awareness of health and environmental protection continues to increase, there is a demand for "bacterial inhibition and sterilization" for plastic parts of household appliances that are frequently in contact with in daily life. [0003] The development and research of antibacterial plastics began in the 1980s, and the research mainly in developed countries such as Japan, the United States and Western Europe has made great progress and has been widely used in the home appliance industry. The research on antibacterial home appliance plastics in my country has only been developed...

Claims

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Application Information

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IPC IPC(8): C08L55/02C08L25/06C08L51/04C08L23/12C08K13/06C08K9/12C08K3/22B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704B29C2948/92895
Inventor 杜岩岩潘晓勇陈伟纪敏杜江伟聂军周刚王炼雷春堂
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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