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Antibacterial ramie fiber reinforced polypropylene composite material and preparation method thereof

The technology of ramie fiber and composite material is applied in the field of antibacterial ramie fiber reinforced polypropylene composite material and its preparation, which can solve the problems affecting the application field of ramie fiber reinforced polypropylene material, the discoloration of the surface of the composite material, and the acceleration of mold growth, etc., so as to achieve high efficiency. Broad-spectrum killing and inhibition of various microorganisms, improving mechanical locking, and reducing hydrophilicity

Pending Publication Date: 2022-03-08
重庆会通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Ramie fiber has a high water absorption rate, and moisture is a hotbed for microorganisms to survive. Therefore, the moisture in the material will accelerate the growth of mold, and the fast-growing mold will cause discoloration, mildew, embrittlement and degradation on the surface of the composite material, which seriously affects the ramie fiber reinforced polymer. Therefore, it is of great research significance to prepare antibacterial ramie fiber reinforced composite materials with excellent mechanical properties

Method used

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  • Antibacterial ramie fiber reinforced polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of modified ramie fiber: add ramie fiber to 10% sodium hydroxide solution, the ratio of solid to liquid g / mL is 1:10, soak at 50°C for 24 hours, and then transfer to permanganate with a concentration of 0.04% Oxidation treatment in potassium solution, the solid-liquid ratio g / mL is 1:10, and the treatment is at room temperature for 2 minutes, then the oxidized ramie fiber is added to 0.1 g / mL PHMG aqueous solution, the solid-liquid ratio g / mL is 1 : 10, fully stirred, reacted at normal temperature for 6h, cleaned up, and finally obtained ramie fibers grafted with PHMG, which were fully dried in an oven for subsequent use.

[0024] The preparation of the antibacterial ramie fiber reinforced polypropylene composite material is as follows: Weigh 75 parts of PP model K9017H, 4 parts of compatibilizer CA100, 0.5 part of antioxidant (antioxidant 1010: 0.2 part, antioxidant 168: 0.3 part), 0.5 part of PE wax, 1 part of HALS 944, they are added in the middle and low...

Embodiment 2

[0026] The preparation of modified ramie fiber is the same as in Example 1.

[0027] The preparation of the antibacterial ramie fiber-reinforced polypropylene composite material, compared with Example 1, differs only in that the amount of modified ramie fiber added is 10 parts.

Embodiment 3

[0029] The preparation of modified ramie fiber is the same as in Example 1.

[0030] The preparation of the antibacterial ramie fiber reinforced polypropylene composite material, compared with Example 1, differs only in that the added amount of the modified ramie fiber is 30 parts.

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Abstract

The invention discloses an antibacterial ramie fiber reinforced polypropylene composite material and a preparation method thereof, and relates to the technical field of polypropylene composite materials, the antibacterial ramie fiber reinforced polypropylene composite material is prepared from the following raw materials by weight: 65-85 parts of polypropylene, 10-30 parts of modified ramie fiber, 3-6 parts of a compatilizer, and 1-3 parts of an auxiliary agent; wherein the modified ramie fibers are obtained by performing alkali treatment and oxidation treatment on ramie fibers and grafting a PHMG antibacterial agent; the preparation method of the polypropylene composite material comprises the following steps: mixing the raw materials, carrying out melt extrusion, and drying. Ramie fiber reinforced polypropylene is adopted, alkali treatment and oxidation treatment are firstly carried out on the ramie fiber, on one hand, the surface roughness of the fiber is increased, the hydrophilicity of the ramie fiber is reduced, and the interface bonding between the ramie fiber and a polypropylene matrix is improved; on the other hand, PHMG can be grafted to the surface of the fiber through Schiff base reaction, and the grafted ramie fiber has a long-acting antibacterial effect; the composite material prepared by the invention is excellent in mechanical property and efficient in antibiosis.

Description

technical field [0001] The invention relates to the technical field of polypropylene composite materials, in particular to an antibacterial ramie fiber reinforced polypropylene composite material and a preparation method thereof. Background technique [0002] With the increasing shortage of global energy and the continuous deterioration of the human living environment, natural fiber reinforced composite materials that meet the requirements of energy saving, environmental protection, and recyclability have gradually become a research hotspot in the field of materials, and have been widely recognized by domestic and foreign scientific research and industry circles. focus on. [0003] Ramie fiber has low density and excellent mechanical properties. Its unique porous microstructure has the natural advantages of shock absorption and noise reduction. It is a kind of composite material reinforcement with good application prospects, and my country's ramie resources are abundant, acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L97/02C08J5/06
CPCC08J5/06C08J2323/14C08J2497/02
Inventor 李查冉红川
Owner 重庆会通科技有限公司
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