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Antibacterial wood plastic composite preparation method through gamma rays

A wood-plastic composite material and gamma ray technology are applied in the field of preparing antibacterial wood-plastic composite materials by using gamma rays, which can solve problems such as poor anti-corrosion and anti-bacterial properties, and achieve the effects of stable product quality, uniform mixing and easy removal.

Active Publication Date: 2015-09-23
TECHN PHYSICS INST HEILONGJIANG ACADOF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of poor anti-corrosion and antibacterial properties of existing wood-plastic composite materials, and to provide a method for preparing antibacterial wood-plastic composite materials using gamma rays

Method used

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  • Antibacterial wood plastic composite preparation method through gamma rays
  • Antibacterial wood plastic composite preparation method through gamma rays
  • Antibacterial wood plastic composite preparation method through gamma rays

Examples

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specific Embodiment approach 1

[0017] Embodiment 1: A method for preparing antibacterial wood-plastic composite materials using gamma rays in this embodiment is carried out according to the following steps:

[0018] 1. The AgNO 3 Dissolve in deionized water and stir until AgNO 3 Dissolve completely, then add ammonia water at a rate of 10 drops / min to 20 drops / min until the precipitate completely disappears, then stir for 8 minutes to 15 minutes at a stirring speed of 50r / min to 500r / min, then add wood powder and isopropanol, and ultrasonically disperse for 1h to 3h under the condition of ultrasonic frequency of 50kHz to 60kHz to obtain a wood flour mixture;

[0019] The AgNO 3 The ratio of the mass to the volume of deionized water is 2.2g: (90-110) mL; the AgNO 3 The mass ratio to wood powder is 1: (1-10); the AgNO 3 The ratio of the mass of isopropanol to the volume of isopropanol is 2.2g: (25-35)mL;

[0020] Two, pass into nitrogen in the wood flour mixed solution that step one obtains, then in 60 I...

specific Embodiment approach 2

[0023] Specific embodiment two: the difference between this embodiment and specific embodiment one is: in step one, ammonia water is then added at a rate of 15 drops / min until the precipitate produced completely disappears. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0024] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, wood flour and isopropanol are then added, and ultrasonically dispersed for 1 hour at an ultrasonic frequency of 53 kHz. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates and belongs to the crossed fields of nanocomposites and radiation chemistry, in particular to an antibacterial wood plastic composite preparation method through gamma rays and aims to solve the problem of poor antibacterial performance of the existing wood plastic composite. The method includes, 1, dissolving AgNO3 into deionized water, adding ammonia after dissolving until the produced precipitate disappears completely, adding wood flour and isopropanol for ultrasonic dispersion, and obtaining wood flour mixed liquid; 2, inputting nitrogen gas for 1 hour, irradiating through 60 Co-gamma rays, and obtaining the wood flour loading nano sliver grains; 3, performing centrifugating separation, washing, and obtaining modified wood flour after drying; 4, mixing the modified wood powder, maleic anhydride-grafted polypropylene and antioxidant, and obtaining the antibacterial wood plastic composite. The disadvantages of impure product due to adoption of antibacterial agent and reducing agent and low stability are avoided.

Description

technical field [0001] The invention relates to the interdisciplinary fields of nanocomposite materials and radiation chemistry, in particular to a method for preparing antibacterial wood-plastic composite materials by using gamma rays. Background technique [0002] Wood-plastic composite material is a new type of environmentally friendly material that is energy-saving, material-saving, and recyclable. However, wood-plastic composite materials also have many shortcomings. In practical applications, it is found that under certain temperature and humidity environments, wood-plastic composite materials will be corroded by mold, and after corrosion, plaque will form on the surface or the mechanical properties of the material will decline, which greatly shortens the wood-plastic composite material. The service life of composite materials will seriously affect their potential applications in the fields of biology, medicine, health and so on. In order to overcome this deficiency, ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08L97/02C08K13/06C08K9/12C08K3/08C08J3/28
CPCC08J3/28C08L23/12C08L2205/03C08L51/06C08L97/02C08K13/06C08K9/12C08K2003/0806
Inventor 赵弘韬张楠李志刚马银鹏徐平张红斯琴图雅杜耘辰
Owner TECHN PHYSICS INST HEILONGJIANG ACADOF SCI
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