Antibacterial wood-plastic composite material based on in-situ growth of nano silver and preparation method of antibacterial wood-plastic composite material

A wood-plastic composite material and in-situ growth technology, which is applied in the field of polymer materials, can solve the problems of complex preparation process of composite materials, easy to be corroded by microorganisms, complicated use of reagents, etc., to achieve secondary in-situ growth and long-term antibacterial time , Improve the effect of interface compatibility

Active Publication Date: 2020-11-24
石家庄元鼎新材料有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the current problem that wood-plastic composite materials are easily corroded by microorganisms, and at the same time overcome the problem that nano-silver is easy to agglomerate in the existing preparation technology of nano-silver antibacterial wood-plastic composite materials, the preparation process of composite materials is complicated and the use of reagents is complicated (especially the need to use additional reducing agents), etc. Shortcomings, the present invention provides an antibacterial wood-plastic composite material based on in-situ growth of nano-silver and its preparation method

Method used

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  • Antibacterial wood-plastic composite material based on in-situ growth of nano silver and preparation method of antibacterial wood-plastic composite material
  • Antibacterial wood-plastic composite material based on in-situ growth of nano silver and preparation method of antibacterial wood-plastic composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0039] (1) Disperse 200 mesh bamboo wood powder, silver nitrate and silver acetate in water according to the mass ratio of 25:1:1, then add 5% (the mass of plant fiber powder, silver salt, silane coupling agent in the total ratio) of γ-glycidyl etheroxypropyl trimethoxysilane, after uniform stirring, absorb in the dark for 60 minutes, and then place it in an oven at 90°C for 24 hours to obtain silver-loaded plant fiber powder, and its XRD pattern is as follows figure 1 shown;

[0040] (2) In parts by weight, 88 parts of low-density polyethylene resin (model is 2426K), 1.8 parts of maleic anhydride grafted low-density polyethylene (laboratory self-made, described maleic anhydride grafted low-density polyethylene The method in the preparation method reference document J.Appl.Polym.Sci.2003,90,1249, here only the acrylonitrile-butadiene-styrene copolymer in the document is replaced by low-density polyethylene), 0.1 part Antiaging agent tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphen...

Embodiment 2

[0043] (1) Disperse 40 mesh pine wood powder and silver acetate in water according to the mass ratio of 20:1, and then add 1% (mass ratio in the sum of plant fiber powder, silver salt, and silane coupling agent) of γ-formazan Acryloyloxypropyltrimethoxysilane, after uniform stirring, absorb in the dark for 10 minutes, and then dry in an oven at 60°C for 36 hours to obtain silver-loaded plant fiber powder;

[0044] (2) In parts by weight, first 70 parts of ethylene-octene copolymers (the model is 8100), 7 parts of maleic anhydride grafted ethylene-octene copolymers (made by the laboratory, the maleic anhydride grafted The preparation method of ethylene-octene copolymer refers to the method in the document J.Appl.Polym.Sci.2003,90,1249, here only the acrylonitrile-butadiene-styrene copolymer in the document is replaced by ethylene- octene copolymer), 0.5 parts of anti-aging agent β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate and 0.5 parts of 2,6-di-tert-butyl-p-cr...

Embodiment 3

[0047] (1) Disperse 600 mesh poplar wood powder and silver nitrate in water according to a mass ratio of 10:1, and then add 12% (mass ratio in the sum of plant fiber powder, silver salt, and silane coupling agent) of vinyl Triethoxysilane, after uniform stirring, absorb in the dark for 200 minutes, and then place it in an oven at 120°C for 18 hours to obtain silver-loaded plant fiber powder;

[0048] (2) In parts by weight, 35 parts of polypropylene resin (the model is 1450T), 5 parts of ethylene-octene copolymer (the model is 8100), 13 parts of maleic anhydride grafted polypropylene (made by the laboratory, the The method in the reference document J.Appl.Polym.Sci.2003,90,1249 of the preparation method of maleic anhydride grafted polypropylene, here only the acrylonitrile-butadiene-styrene copolymer in the document is replaced by Polypropylene), 1 part of anti-aging agent N-N'-bis(β-naphthyl)-p-phenylenediamine and 1 part of triphenyl phosphite are uniformly melted and compou...

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Abstract

The invention relates to an antibacterial wood-plastic composite material based on in-situ growth of nano silver and a preparation method of the antibacterial wood-plastic composite material. The antibacterial wood-plastic composite material includes: 10-45 parts of silver-loaded plant fiber powder, 40-88 parts of polyolefin resin, 1.8-13 parts of a polymer modifier and 0.2-2 parts of an antioxidant. According to the preparation of the silver-loaded plant fiber powder, the porous structure and reducing groups rich in plant fiber powder are used, a silver precursor is uniformly adsorbed throughthe aid of the porous structure and then reduced to nano-silver in situ by the reducing groups, and meanwhile, the nano-silver is assisted by the porous structure to achieve uniform load. The methodis simple and easy to implement, only involves traditional wood-plastic technology, and does not require special equipment, the porous structure and chemical composition of the plant fiber powder areused to achieve in-situ growth and uniform loading of the nano-silver, the additional using of reducing agents is avoided, the problem of prone agglomeration of the nano-silver is solved, improving ofthe antibacterial rate of wood-plastic composites is facilitated, and the application fields are broadened.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an antibacterial wood-plastic composite material and a preparation method thereof, in particular to an antibacterial wood-plastic composite material based on in-situ growth of nano-silver and a preparation method thereof. Background technique [0002] Wood-plastic composite material is a new type of composite material that combines plant fiber powder with plastic after pretreatment. It combines the advantages of plastic and wood, not only has good performance, but also makes waste wood resources, alleviates the problems of low comprehensive utilization of wood and resource shortage, and at the same time endows itself with the characteristics of low cost and environmental friendliness, so it has been widely used In construction, decoration, transportation and packaging and other fields. However, single-formulation wood-plastic composites are easily corroded by microorga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L51/06C08L23/12C08K13/06C08K9/12C08K9/06C08K3/08
CPCC08L23/06C08L23/0815C08L23/12C08L2207/066C08L2205/03C08K2201/011C08K2003/0806C08L51/06C08K13/06C08K9/12C08K9/06C08K3/08
Inventor 王昱程戚嵘嵘罗超宰建陶钱雪峰
Owner 石家庄元鼎新材料有限公司
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