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CN-121975225-A - Antibacterial high-strength organic composite material and preparation method thereof

CN121975225ACN 121975225 ACN121975225 ACN 121975225ACN-121975225-A

Abstract

The invention relates to an antibacterial high-strength organic composite material and a preparation method thereof, wherein the antibacterial high-strength organic composite material comprises polypropylene, polyvinyl alcohol, modified titanium dioxide, epoxidized soybean oil, carboxymethyl cellulose, a filler and an auxiliary agent, and the modified titanium dioxide is obtained by firstly carrying out a blending reaction on hydroxylated titanium dioxide and arachidonic acid, and then carrying out a blending reaction on the hydroxylated titanium dioxide and arachidonic acid, styrene, butyl acrylate and methacrylic acid tannic acid. The modified titanium dioxide disclosed by the invention is introduced with a long alkyl chain, benzene rings, acrylic ester and tannic acid, wherein the long alkyl chain can improve the dispersibility, the mechanical property and the mechanical property, the acrylic ester can improve the compatibility of each component, the tannic acid improves the structural stability, and in addition, the titanium dioxide has an antibacterial effect, and after modification, the titanium dioxide can produce a synergistic effect with other components, so that the performance of a product is improved.

Inventors

  • GUO JUNHUI
  • XIAO HUIYI
  • CHEN LIXUAN
  • WU LINLIN
  • LIANG XIAOYU

Assignees

  • 江门职业技术学院

Dates

Publication Date
20260505
Application Date
20260115

Claims (9)

  1. 1. The antibacterial high-strength organic composite material is characterized by comprising the following components in parts by weight: 70-100 parts of polypropylene 10-40 Parts of polyvinyl alcohol 3-15 Parts of modified titanium dioxide 1-4 Parts of epoxidized soybean oil Carboxymethyl cellulose 1-2 parts 5-20 Parts of filler 3-8 Parts of an auxiliary agent; Wherein the modified titanium dioxide is obtained by firstly carrying out a blending reaction on hydroxylated titanium dioxide and arachidonic acid, and then carrying out a blending reaction on the hydroxylated titanium dioxide and arachidonic acid, styrene, butyl acrylate and methacrylic acid tannic acid.
  2. 2. The antimicrobial high-strength organic composite material according to claim 1, wherein the filler is selected from one or more of calcium carbonate, silica, talc, kaolin, barium sulfate, carbon black.
  3. 3. The antimicrobial high-strength organic composite material according to claim 1, wherein the auxiliary agent is selected from one or more of plasticizers, antioxidants, multifunctional auxiliary agents.
  4. 4. A method for preparing an antibacterial high-strength organic composite material according to any one of claims 1 to 3, comprising the steps of: s1, carrying out hydroxylation treatment on titanium dioxide to obtain hydroxylated titanium dioxide; S2, blending the hydroxylated titanium dioxide and the arachidonic acid, and heating and stirring for reaction to obtain an intermediate product; s3, blending tannic acid, glycidyl methacrylate and a catalyst in an inert atmosphere, and heating and stirring for reaction to obtain tannic acid methacrylate; s4, blending the intermediate product, styrene, butyl acrylate, methacrylic acid tannic acid and an initiator in an inert atmosphere, and heating and stirring for reaction to obtain modified titanium dioxide; S5, blending the filler, the epoxidized soybean oil and the carboxymethyl cellulose, and then adding the modified titanium dioxide, blending with the rest components, banburying and blowing to obtain the antibacterial high-strength organic composite material.
  5. 5. The method for preparing an antibacterial high-strength organic composite material according to claim 4, wherein in the step S2, the mass ratio of the hydroxylated titanium dioxide to the arachidonic acid is (1-2): 8-30.
  6. 6. The method for producing an antibacterial high-strength organic composite material according to claim 4, wherein in step S2, the heating temperature is 70 to 90 ℃.
  7. 7. The method for producing an antibacterial high-strength organic composite material according to claim 4, wherein in step S3, the mass ratio of tannic acid to glycidyl methacrylate is (2-6): 15-25.
  8. 8. The method for producing an antibacterial high-strength organic composite material according to claim 4, wherein in step S3, the heating temperature is 70 to 90 ℃.
  9. 9. The method for preparing an antibacterial high-strength organic composite material according to claim 4, wherein in the step S4, the mass ratio of the intermediate product, styrene, butyl acrylate and methacrylic acid tannic acid is (1-4): 1-4.

Description

Antibacterial high-strength organic composite material and preparation method thereof Technical Field The invention relates to the technical field of films, in particular to an antibacterial high-strength organic composite material and a preparation method thereof. Background The organic composite material is a composite material which is prepared by taking an organic polymer material as a base material and introducing other organic components, inorganic fillers or functional auxiliary agents through physical blending, chemical reaction or multilayer compounding and other modes, and has the performance which cannot be realized by a single material. Common components of the organic composite material comprise resins such as polypropylene, polyethylene, polyvinyl alcohol, polyethylene terephthalate, polyvinyl chloride and the like, which are used as core base materials to determine the basic mechanical properties, processing performance and use temperature of the material, compatilizers such as maleic anhydride grafted polypropylene, ethylene-acrylic acid copolymer and the like, binders such as polyurethane, acrylic ester and the like, coupling agents such as silane coupling agents, titanate coupling agents and the like, inorganic fillers such as titanium dioxide, calcium carbonate, talcum powder and the like, and functional aids such as antibacterial agents, plasticizers and the like. The organic composite material has wide application, including food package, daily chemical package, shampoo, cosmetics, liquid laundry detergent, etc., industrial product package, hardware, parts, electronic element package, etc., medical equipment, medical catheter, transfusion bag base material, etc. However, the existing organic composite materials on the market still have some problems such as insufficient antibacterial property, incapability of inhibiting pathogenic bacteria on the surface of the materials, rapid deterioration and mildew of foods, greatly shortened shelf life, incapability of inhibiting bacteria breeding when being used for medical health, pollution of medical consumables, medical cross infection and the like, insufficient strength, easy occurrence of pinholes, cracks and even complete breakage under the action of external forces such as stretching, folding, friction and puncture, and easy elimination of similar products with high strength in market competition. In view of the foregoing, it is necessary to develop a new technical solution to solve the drawbacks of the prior art. Disclosure of Invention The invention provides an antibacterial high-strength organic composite material and a preparation method thereof, the antibacterial high-strength organic composite material comprises polypropylene, polyvinyl alcohol, modified titanium dioxide, epoxidized soybean oil, carboxymethyl cellulose, filler and an auxiliary agent. The modified titanium dioxide disclosed by the invention is introduced with various active groups, so that the dispersibility, the compatibility, the mechanical property and the structural stability are improved, the components are synergistic, the performance of the product is improved, and the modified titanium dioxide has a good application prospect. The invention aims to provide an antibacterial high-strength organic composite material, which comprises the following components in parts by weight: 70-100 parts of polypropylene 10-40 Parts of polyvinyl alcohol 3-15 Parts of modified titanium dioxide 1-4 Parts of epoxidized soybean oil Carboxymethyl cellulose 1-2 parts 5-20 Parts of filler 3-8 Parts of an auxiliary agent; Wherein the modified titanium dioxide is obtained by firstly carrying out a blending reaction on hydroxylated titanium dioxide and arachidonic acid, and then carrying out a blending reaction on the hydroxylated titanium dioxide and arachidonic acid, styrene, butyl acrylate and methacrylic acid tannic acid. Further, the filler is selected from one or more of calcium carbonate, silicon dioxide, talcum powder, kaolin, barium sulfate and carbon black. Further, the auxiliary agent is selected from one or more of plasticizer, antioxidant and multifunctional auxiliary agent. Another object of the present invention is to provide a method for preparing the antibacterial high-strength organic composite material, which comprises the steps of: s1, carrying out hydroxylation treatment on titanium dioxide to obtain hydroxylated titanium dioxide; S2, blending the hydroxylated titanium dioxide and the arachidonic acid, and heating and stirring for reaction to obtain an intermediate product; s3, blending tannic acid, glycidyl methacrylate and a catalyst in an inert atmosphere, and heating and stirring for reaction to obtain tannic acid methacrylate; s4, blending the intermediate product, styrene, butyl acrylate, methacrylic acid tannic acid and an initiator in an inert atmosphere, and heating and stirring for reaction to obtain modified titanium dioxide; S5, blending the filler, the epo