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A kind of antibacterial plastic based on microwave synthesis of quaternary ammonium salt and preparation method thereof

A technology of antibacterial plastics and microwave synthesis, applied in the field of modified plastics, can solve the problems of unsatisfactory modification effects and mechanical properties of modified plastics, insufficient strength and mechanical properties of antibacterial plastics, and lack of inorganic fillers in material sections. , to achieve energy consumption in green and environmentally friendly production, improve the effect of capacity increase, and solve the effect of incompatibility

Active Publication Date: 2021-12-28
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Compatibility and dispersion are two major problems in the production of inorganic particle modified plastics. Due to the different polarity of inorganic particles from the resin and the influence of the interaction between particles, inorganic fillers are added to the resin to form an obviously incompatible interface with the resin. And it is difficult to disperse when they are agglomerated together. Usually, a piece-by-piece "island phase" structure is formed inside the resin, and some inorganic fillers are aggregated in the material section, and the inorganic filler in some material sections is lacking, which leads to the easy peeling of the inorganic filler and the modification effect and mechanical properties of the modified plastic. Unsatisfactory performance
The strength and mechanical properties of plastics often determine the scope and field of use of plastics. The strength and mechanical properties of antibacterial plastics only added with antibacterial agents are generally not enough to meet the requirements of various products, and it is easy to limit the scope of application of antibacterial plastics and cannot be used in Putting into use in the production of specific products, improving the strength of antibacterial plastics is a key point to improve the production value and use value of antibacterial plastics, and it is also a major problem that needs to be solved in the industry

Method used

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  • A kind of antibacterial plastic based on microwave synthesis of quaternary ammonium salt and preparation method thereof
  • A kind of antibacterial plastic based on microwave synthesis of quaternary ammonium salt and preparation method thereof
  • A kind of antibacterial plastic based on microwave synthesis of quaternary ammonium salt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A kind of antimicrobial plastic based on microwave synthesis quaternary ammonium salt, by weight, comprises following component:

[0045]

[0046] Wherein, the modified tetraacicular zinc oxide whisker is prepared by the following steps:

[0047] (a) Mix the silane coupling agent KH-560 and absolute ethanol at a mass ratio of 1:50, and disperse evenly by ultrasonic to obtain a mixture A;

[0048] (b) Add tetraacicular zinc oxide whiskers to mixture A, disperse uniformly by ultrasonic, then heat and reflux for 2-4 hours, filter with suction, wash with absolute ethanol, and dry at 60°C to obtain the modified tetraacicular zinc oxide whiskers. Zinc whiskers, wherein the mass ratio of the tetraacicular zinc oxide whiskers to the mixture A is 1:5.

[0049] The ultrasonic dispersion power in step (a)(b) is 100W. The acicular body length of the tetraacicular zinc oxide whisker is 10-50 μm, the root diameter of the acicular body is 0.5-3 μm, and the whiteness is more than ...

Embodiment 2

[0061] A kind of antimicrobial plastic based on microwave synthesis quaternary ammonium salt, by weight, comprises following component:

[0062]

[0063] Wherein, the modified tetraacicular zinc oxide whisker is prepared by the following steps:

[0064] (a) Mix the silane coupling agent KH-551 and absolute ethanol at a mass ratio of 1:50, and disperse evenly by ultrasonic to obtain a mixture A;

[0065] (b) Add tetraacicular zinc oxide whiskers to mixture A, disperse uniformly by ultrasonic, then heat and reflux for 3 hours, filter with suction, wash with absolute ethanol, and dry at 60°C to obtain the modified tetraacicular zinc oxide crystals Whiskers, wherein the mass ratio of the tetraacicular zinc oxide whiskers to the mixture A is 1:5.

[0066] The ultrasonic dispersion power in step (a)(b) is 150W. The acicular body length of the tetraacicular zinc oxide whisker is 10-50 μm, the root diameter of the acicular body is 0.5-3 μm, and the whiteness is more than or equal...

Embodiment 3

[0078] A kind of antimicrobial plastic based on microwave synthesis quaternary ammonium salt, by weight, comprises following component:

[0079]

[0080] Wherein, the modified tetraacicular zinc oxide whisker is prepared by the following steps:

[0081] (a) Mix the silane coupling agent KH-550 and absolute ethanol at a mass ratio of 1:50, and disperse them uniformly by ultrasonic to obtain a mixture A;

[0082] (b) Add tetrapod-shaped zinc oxide whiskers to mixture A, disperse uniformly by ultrasonic, then heat and reflux for 4 hours, filter with suction, wash with absolute ethanol, and dry at 60°C to obtain the modified tetrapod-shaped zinc oxide crystals Whiskers, wherein the mass ratio of the tetraacicular zinc oxide whiskers to the mixture A is 1:5.

[0083] The ultrasonic dispersion power in step (a)(b) is 180W. The acicular body length of the tetraacicular zinc oxide whisker is 10-50 μm, the root diameter of the acicular body is 0.5-3 μm, and the whiteness is more t...

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Abstract

The invention discloses an antibacterial plastic based on microwave synthesis of quaternary ammonium salt. The antibacterial plastic comprises the following components in parts by weight: 60-100 parts of main resin, 1-15 parts of modified tetraacicular zinc oxide whiskers , 2-20 parts of octadecylmethyl dihydroxyethyl ammonium bromide, 0.1-0.5 parts of ester coupling agent, 2-3 parts of dispersant, 0-2 parts of compatibilizer, 1-20 parts of nano-active calcium carbonate. The invention utilizes the modified four-needle zinc oxide whisker to carry out auxiliary antibacterial and utilizes its surface modification to improve the compatibility of nano particles and the main plastic, increase its dispersibility with nano active calcium carbonate, and make them form nano particles in the main resin. The intersecting network of particles jointly increases the strength of the antibacterial plastic and improves its mechanical properties; the preparation method is low in cost and suitable for industrial production, and the produced antibacterial plastic has good antibacterial performance and processing performance.

Description

technical field [0001] The invention relates to the technical field of modified plastics, in particular to an antibacterial plastic and a preparation method thereof. Background technique [0002] People use a lot of plastic products in their daily life, such as household appliance casings, auto parts, daily necessities, etc., but under suitable conditions, the plastic surface is very easy to breed bacteria, which is easy to cause bacterial infection and endanger people's health. Therefore, people have put forward new requirements for "antibacterial and sterilizing" for plastic products that are frequently in contact with in life. Antibacterial plastics are a type of plastic that can inhibit the growth of bacteria and even kill bacteria, thereby keeping itself or plastic products clean. The demand for antibacterial plastics in various industries in my country is constantly expanding, and there is a broad development space for the development of antibacterial plastics in Chin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L75/04C08L53/02C08L51/06C08L51/00C08K13/06C08K9/06C08K7/08C08K5/19C08K3/26C08K5/098C07C209/12C07C211/63
CPCC08L23/0853C08K13/06C08K9/06C08K7/08C08K5/19C08K3/26C08K5/098C08L53/025C07C209/12C08K2201/011C08K2003/265C08L51/06C08L75/04C08L51/006C07C211/63
Inventor 毛桃嫣屈俊任徐常威
Owner GUANGZHOU UNIVERSITY
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