Preparation method of mold-proof water-resistant bamboo-plastic composite material

A composite material and water-resistant technology, which is applied in the field of bamboo-plastic composite material preparation, can solve the problems of poor compatibility between bamboo fiber and thermoplastics, decreased mechanical properties of composite materials, and poor melt fluidity of materials, so as to improve mechanical properties and improve dispersion The effect of reducing stress concentration

Inactive Publication Date: 2018-07-06
陈建峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: the surface of the bamboo fiber in the common bamboo-plastic composite material contains a large amount of polar groups such as hydroxyl and phenolic hydroxyl groups, and shows strong hydrophilicity, so mold is easy to appear. Bamboo fiber has poor compatibility with thermoplastics, and it is easy to agglomerate in the plastic matrix, and the melting fluidity of the material is poor, and the dispersion is uneven, which leads to the defects of the mechanical properties of the composite material. It provides a mold-proof and water-resistant bamboo plastic Preparation method of composite material

Method used

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  • Preparation method of mold-proof water-resistant bamboo-plastic composite material

Examples

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Effect test

example 1

[0023]Weigh 10g of nano-zinc oxide with a particle size of 24nm and pour it into a beaker with 9mL of deionized water and 50mL of absolute ethanol, and ultrasonically disperse it for 30min with an ultrasonic disperser to obtain a nano-zinc oxide dispersion. The nano-zinc oxide dispersion and The silane coupling agent KH-550 is mixed in a beaker at a mass ratio of 3:1, stirred and reacted for 1 hour at a temperature of 75°C to obtain a mixed solution, and the mixed solution is put into a centrifuge at a speed of 1000r / Centrifuge for 45 minutes under the condition of 1 min, separate the precipitate, and wash the precipitate with absolute ethanol for 3 times, and finally put it into a vacuum drying oven, dry it at 65°C for 1 hour, cool and discharge, and obtain modified nano-zinc oxide; According to the mass ratio of 2:1:4, mix ibuprofen, isothiazolinone and distilled water in a beaker and stir for 6 minutes to obtain a mixed solution, and then add sodium lauryl sulfate of 1% of ...

example 2

[0025] Weigh 11g of nano-zinc oxide with a particle size of 28nm and pour it into a beaker with 95mL of deionized water and 55mL of absolute ethanol, and ultrasonically disperse it with an ultrasonic disperser for 33min to obtain a nano-zinc oxide dispersion. The nano-zinc oxide dispersion and Silane coupling agent KH-550 is mixed in a beaker at a mass ratio of 3:1, stirred and reacted for 1.5 hours at a temperature of 80°C to obtain a mixed solution, and the mixed solution is put into a centrifuge at a speed of 1100r Centrifuge for 53 minutes under the condition of 1 / min, separate the precipitate, wash the precipitate with absolute ethanol 4 times, and finally put it in a vacuum drying oven, dry it at 70°C for 1.5 hours, cool and discharge the material, and obtain the modified nano-oxidized Zinc; mix ibuprofen, isothiazolone and distilled water in a beaker with a mass ratio of 2:1:4 and stir for 7 minutes to obtain a mixed solution, and then add 1% dodecyl dodecyl compound to ...

example 3

[0027] Weigh 12g of nano-zinc oxide with a particle size of 32nm and pour it into a beaker with 100mL of deionized water and 60mL of absolute ethanol, and ultrasonically disperse it with an ultrasonic disperser for 36min to obtain a nano-zinc oxide dispersion. The nano-zinc oxide dispersion and Silane coupling agent KH-550 was mixed in a beaker at a mass ratio of 3:1, stirred and reacted for 2 hours at a temperature of 85°C to obtain a mixed solution, and the mixed solution was put into a centrifuge at a speed of 1200r / Centrifuge for 60 minutes under the condition of 1 min, separate the precipitate, wash the precipitate with absolute ethanol 5 times, and finally put it into a vacuum drying oven, dry it at 75°C for 2 hours, cool and discharge the material, and obtain the modified nano-zinc oxide; According to the mass ratio of 2:1:4, mix ibuprofen, isothiazolinone and distilled water in a beaker and stir for 8 minutes to obtain a mixed solution, and then add sodium lauryl sulfa...

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Abstract

The invention relates to the technical field of bamboo-plastic composite material preparation, and particularly relates to a preparation method of a mold-proof water-resistant bamboo-plastic compositematerial. According to the preparation method provided by the invention, polypropylene is used as a matrix, modified bamboo fibers and modified nano zinc oxide are used as reinforcing agents, and a self-made antibacterial emulsion, hydrogen-containing silicone oil and the like are supplemented to prepare the mold-proof water-resistant bamboo-plastic composite material. Firstly, the surface modification of the self-made bamboo fibers is carried out by using nano calcium carbonate and ethylenediaminetetraacetic acid disodium salt, so that the mechanical property of the bamboo-plastic compositematerial is improved; the nano zinc oxide is modified by using a silane coupling agent, the zinc ions dissolved out of the nano zinc oxide are combined with the cell membranes and membrane proteins, bacterial propagation is prevented through damaging the cell structure; the effect of sterilization and mildew prevention is achieved through the utilization of special properties of the nano zinc oxide; the hydrogen-containing silicone oil is continuously added, and a dense hydrogen-containing silicone oil hydrophobic protective layer is formed, so that the water resistance of the bamboo-plastic composite material is improved, and a wide application prospect is achieved.

Description

technical field [0001] The invention relates to the technical field of preparing bamboo-plastic composite materials, in particular to a method for preparing a mold-proof and water-resistant bamboo-plastic composite material. Background technique [0002] my country is the country with the most abundant bamboo resources in the world, among which the bamboo forest area, bamboo species and economic utilization level all rank first in the world. Bamboo has the advantages of fast growth, early maturity, high strength, good toughness, and high hardness, and has been widely used in many fields. Bamboo-plastic composites made of bamboo fiber, bamboo powder and other materials are composite materials with broad prospects. [0003] Bamboo-plastic composite materials are made by adding bamboo fibers and bamboo powder as reinforcing materials or fillers to thermoplastics, and compounding bamboo and molten thermoplastics by heating, or referring to injecting organic monomers into the fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L97/02C08L83/05C08K13/06C08K9/06C08K3/22C08K5/09C08K9/12C08K3/26C08K5/46
CPCC08K2003/2296C08K2003/265C08K2201/003C08K2201/011C08K2201/014C08L23/12C08L2205/03C08L2205/16C08L97/02C08L83/04C08K13/06C08K9/06C08K3/22C08K5/09C08K9/12C08K3/26C08K5/46
Inventor 陈建峰杨明忠张建初
Owner 陈建峰
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