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Wood composite magnetic plate and preparation method thereof

A composite magnetic and wood technology, applied in the direction of wood laminate products, wood processing appliances, wood veneer bonding, etc., can solve the problems of poor mechanical strength, affecting the uniformity of electromagnetic wave absorption performance of fiberboard, affecting uniform dispersion and so on

Inactive Publication Date: 2017-11-03
杭州治木科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these two methods can make the plate obtain better magnetic properties, they have certain limitations in actual production and application: 1. The early stage process is complicated, and the manufacturing cost is greatly affected by the magnetic particle manufacturer, and most of them involve high temperature , high pressure and other harsh preparation conditions; 2. The two different phases of wood and magnetic nanoparticles are directly glued by an adhesive to form a magnetic fiberboard, and the mechanical strength of the product is poor; 3. The magnetic particles are dispersed in the wood fiber through the adhesive It is easy to be affected by the adhesive and agglomerate itself, which affects its uniform dispersion in the product, thus affecting the uniformity of the electromagnetic wave absorption performance of different parts of the fiberboard

Method used

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  • Wood composite magnetic plate and preparation method thereof
  • Wood composite magnetic plate and preparation method thereof
  • Wood composite magnetic plate and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A preparation method of the above-mentioned wooden composite magnetic plate, comprising the following steps:

[0045] (1) Prepare magnetic fibers by in-situ impregnation and co-precipitation method, the preparation method of magnetic fibers is as follows:

[0046] Step A: After the wood fiber with a moisture content of 3% is washed by ultrasonic vibration, it is placed in a blast drying oven to dry;

[0047] Step B: dissolving ferric salt and ferrous salt in a beaker containing deionized water to obtain an iron salt solution;

[0048] Step C: immerse the wood fibers in the above-mentioned iron salt solution, and incubate for 24 hours under a nitrogen environment;

[0049] Step D: Take out the wood fiber impregnated with the iron salt solution, rinse it with deionized water, and then dry it in a vacuum drying oven for 12 hours, and then immerse the wood fiber in an ammonia solution for incubation;

[0050] Step E: Take out the wood fibers soaked in ammonia solution, wa...

Embodiment 2

[0074] This embodiment is the same as Embodiment 1 except for the following features: the thickness of the magnetic fiberboard core material in this embodiment is 3 mm; the hot pressing time in step 3 is 3 min; the hot pressing time in step 4 is 4.5 min.

Embodiment 3

[0076] This embodiment is the same as Embodiment 1 except for the following features: the thickness of the magnetic fiberboard core material in this embodiment is 4 mm; the hot pressing time in step 3 is 4 min; the hot pressing time in step 4 is 6 min.

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Abstract

The invention relates to the technical field of manufacturing of magnetic plates, in particular to a wood composite magnetic plate and a preparation method thereof. The wood composite magnetic plate comprises solid wood panels and a magnetic fiber board core material, wherein the magnetic fiber board core material is glued between the solid wood panels through adhesives. The preparation method of the wood composite magnetic plate comprises the following steps: preparing magnetic fiber through an in-situ immersion and coprecipitation method; then mixing the magnetic fibers with a thermoplastic polymer to prepare the magnetic fiber board core material; finally, crosslinking the magnetic fiber board core material and the solid wood panels through the thermoplastic adhesives, thus obtaining the wood composite magnetic plate. According to the wood composite magnetic plate and the preparation method thereof which are provided by the invention, physical and chemical properties of wood fiber are guaranteed, and uniform dispersion of magnetic particles in the fiber board is also guaranteed, so that the fiber board has electromagnetic shielding performance, and an electromagnetic shielding function of the wood composite magnetic plate obtained by a magnetic fiber board serving as the core material is guaranteed.

Description

technical field [0001] The invention relates to the technical field of magnetic plate manufacturing, in particular to a wooden composite magnetic plate and a preparation method thereof. Background technique [0002] With the rapid growth of the application of wireless electronic devices such as mobile phones, local area networks or home robots, people's daily life and production are increasingly affected by electromagnetic waves, so it is urgent to have the characteristics of light weight, thin thickness, wide effective frequency, and strong absorption capacity absorbing decorative materials. [0003] As a kind of biomass composite material, magnetic board retains the original wood texture, low specific gravity, and easy processing and molding. It also has other special properties and applications due to the addition of magnetic materials such as ferroferric oxide. [0004] The current manufacturing process of magnetic boards still remains at first preparing magnetic nanopa...

Claims

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Application Information

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IPC IPC(8): B32B21/02B32B7/12B32B21/10B32B37/06B32B37/10B32B37/12B27D1/06B27D1/08
CPCB32B21/10B27D1/06B27D1/08B32B5/02B32B7/12B32B37/06B32B37/10B32B37/1284B32B2255/02B32B2260/021B32B2262/067B32B2264/102B32B2307/212B32B2309/022B32B2309/025B32B2309/125
Inventor 娄志超蔡家斌何海文李星周明孙晋强陆弘毅孙照斌
Owner 杭州治木科技有限公司