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Antibacterial bamboo composite material and preparation method

A composite material and bamboo technology, applied in the direction of impregnating wood, wood impregnation, manufacturing tools, etc., can solve the problems of loss of light, yellowing, easy peeling of the surface, etc., to achieve and lasting antibacterial effect, improve antibacterial performance, and good antibacterial effect. Effect

Active Publication Date: 2016-11-23
INT CENT FOR BAMBOO & RATTAN +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although the smearing method has a certain protective effect, the surface layer is easy to peel off, and there are problems such as yellowing and loss of light; while the impregnation method can only deposit or fill most of the inorganic substances on the surface of the bamboo, which will affect the thermal stability and antibacterial properties of the bamboo. Limited improvement in efficacy, especially long-term

Method used

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  • Antibacterial bamboo composite material and preparation method
  • Antibacterial bamboo composite material and preparation method
  • Antibacterial bamboo composite material and preparation method

Examples

Experimental program
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Effect test

preparation example Construction

[0027] According to the preparation method of the present invention, the bamboo material is pretreated in step 1), for example, the surface of the bamboo material can be polished using a scraper or sandpaper, etc., on the one hand, the surface of the bamboo material is guaranteed to be smooth, and on the other hand, the surface of the bamboo material is guaranteed to be smooth. The surface of the raw material is not polluted by the outside world.

[0028] In step 2), the bamboo raw material treated in step 1) is impregnated, that is, it is completely immersed in the zinc salt mixed solution dispersed with graphene oxide nanosheets, and vacuumed to below 0.01MPa, ultrasonically treated for 10 Minutes make the zinc salt and graphene oxide nanosheets fill the interior of the bamboo material as much as possible. Among them, in order to immerse the zinc salt into the interior of the bamboo material as much as possible, the concentration of the zinc salt in the solution should be as...

Embodiment 1

[0040] Scrape off a thin layer of bamboo (1cm×1cm×1cm) with a spatula, about 1-2mm, then use deionized water and ethanol to vacuum and ultrasonically clean impurities for 30 minutes, dry at 40°C, and completely immerse in 20mL of a mixture of saturated zinc acetate and graphene oxide nanosheets (2g / L) was ultrasonically treated for 10 minutes under vacuum conditions, and after standing for 24 hours, 1mol / L monoethanolamine solution was added dropwise to adjust the pH value of the solution to 10, and ultrasonic treatment was performed under vacuum conditions. Treat for 10 minutes, take out the bamboo pieces after soaking for 24 hours, rinse the impurities on the surface with deionized water, and dry at 60°C;

[0041] Add 1.5 mL of graphene oxide nanosheet aqueous solution with a concentration of 10 g / L into 20 mL of zinc nitrate solution with a concentration of 0.05 mol / L, mix well by ultrasonication for 30 minutes, and add monoethanolamine solution (1 mol / L) dropwise to the sol...

experiment Embodiment 1

[0052] The antibacterial test was carried out on the sample by the inhibition zone method. According to the size of the antibacterial zone around the antibacterial substance, the quality of the anti-mold and antibacterial properties of the sample can be judged. The modified bamboo pieces prepared in Example 1 and Comparative Examples 1 to 3 are tested for Escherichia coli antibacterial properties, and the specific operation process is: prepare the required medium for antibacterial experiments: take by weighing 2.5g of yeast extract powder and 5g of peptone , NaCl 5g, agar powder 7.5g into the conical flask, add 500ml of deionized water, use 1mol / L NaOH to adjust the pH to 7.4, stir for 20min, place it in a 120°C high-pressure steam sterilizer for 20min, and then put Move the culture solution to the ultra-clean bench, divide it into sterile petri dishes, wait for it to naturally solidify into a solid medium, take the twice-diluted E. Incubate at 37°C for 24 hours in a constant ...

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Abstract

The invention discloses a preparation method of an oxide graphene nanosheet / zinc oxide / bamboo composite material. The method deeply combines zinc oxide and an oxide graphene nanosheet in a bamboo through a hydrothermal reaction to obtain the oxide graphene nanosheet / zinc oxide / bamboo composite material with an excellent antibacterial effect. The method is simple in process, green, environment-friendly and low in cost, is different from a traditional nanometer inorganic matter modification surface treatment method, prepares an oxide graphene / zinc oxide modified bamboo composite material through a method of combining pretreatment with the hydrothermal method, penetrates oxide graphene and zinc oxide in the material, is not easy to lose effective components, and is excellent and long in antibacterial effect. The bamboo can keep better antibacterial performance in later secondary processing.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to an antibacterial bamboo composite material and a preparation method. Background technique [0002] Bamboo is a natural fast-growing material and an important forest resource. Bamboo has the characteristics of short growth cycle, high yield, high strength and renewable, and can be widely used in many fields such as construction, building materials, and home furnishing. my country is rich in bamboo resources, rational development and utilization of bamboo can alleviate the shortage of domestic timber resources and other issues, and has high economic and ecological value. Especially in the application of building materials, the bamboo structure has many advantages such as light weight, good toughness, small deformation and high strength. It can be made into a truss to solve the problem of large spans in buildings. Modern building materials meet the requirements of su...

Claims

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Application Information

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IPC IPC(8): B27J1/00B27K3/52B27K9/00
CPCB27J1/00B27K3/52B27K9/002
Inventor 费本华陈秀芳牟新东张波张俊逸吕黄飞
Owner INT CENT FOR BAMBOO & RATTAN
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