Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Artificial board with electromagnetic shielding function and preparation method thereof

An electromagnetic shielding and wood-based panel technology, which is applied in the field of panel manufacturing, can solve problems such as poor bonding between the metal layer and the wooden substrate, adverse effects on the mechanical properties of the wooden substrate, and complex processing techniques for conductive materials, so as to improve electromagnetic shielding performance, Good electromagnetic shielding performance, the effect of overcoming easy cracking and deformation

Pending Publication Date: 2021-04-20
DEHUA TB NEW DECORATION MATERIAL CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are mainly two kinds of existing wood-based electromagnetic shielding wood-based panels: one is to glue metal foil or metal mesh on the wooden substrate to realize electromagnetic shielding performance, such as the wood-based panel with antistatic and electromagnetic shielding effectiveness disclosed in CN00236177.9 and CN200810111684.7 discloses engineering electromagnetic compatibility wood-based composite materials. This type of electromagnetic shielding wood-based panel has the following defects: the metal layer will obviously increase the overall weight of the board; the bonding level between the metal layer and the wood substrate is poor, and it is easy to delaminate; It is difficult to process after the metal layer is combined with the wooden substrate, and post-processing may affect the electromagnetic shielding performance
The other is to add conductive material inside the base material for electromagnetic shielding, such as the composite wood-based panel with electromagnetic shielding function disclosed in CN201510471670.6, which is mainly composed of nickel-plated expanded graphite and wood fiber. This method overcomes the first A kind of defect of electromagnetic shielding wood-based panels, but the processing technology of conductive materials is complicated, and it is easy to cause adverse effects on the mechanical properties of wood substrates, especially the static bending strength, which leads to easy cracking and deformation of the board

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Artificial board with electromagnetic shielding function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides a kind of artificial panel with electromagnetic shielding function, specifically a conductive plastic film veneer plywood with a thickness of 20mm, and the preparation method is as follows:

[0035] S1. Preparation of conductive plastic film

[0036] (1) Put 35 parts by mass of polypropylene resin and 30 parts by mass of ethylene-polyethylene terephthalate copolymer into the reactor for dry mixing. During this process, slowly add 30 parts by mass of the particle size distribution range of 20-35nm nano-scale bamboo charcoal with an average particle size of 30nm, the feeding is completed within 10 minutes, and then the three continue to dry mix for 25 minutes;

[0037] (2) Heat the reaction kettle to 150°C, add 6 parts by mass of zinc oxide powder, 2 parts by mass of diisooctyl phthalate, and 2 parts by mass of chromium complex coupling agent, and then mix and stir for 10 minutes;

[0038] (3) Cool down the reaction kettle to 60°C, open the kettl...

Embodiment 2

[0054] This embodiment provides a kind of wood-based panel with electromagnetic shielding function, specifically a conductive plastic film facing particleboard with a thickness of 15mm, and the preparation method is as follows:

[0055] S1. Preparation of conductive plastic film

[0056] (1) Put 42 parts by mass of polypropylene resin and 32 parts by mass of ethylene-polyethylene terephthalate copolymer into the reactor for dry mixing. During this process, slowly add 28 parts by mass of 20-30nm nano-scale bamboo charcoal with an average particle size of 23nm, the feeding is completed within 10 minutes, and then the three continue to dry mix for 20 minutes;

[0057] (2) Heat the reaction kettle to 140°C, add 5 parts by mass of zinc oxide powder, 1.5 parts by mass of dioctyl adipate, and 1.5 parts by mass of chromium complex coupling agent, and then mix and stir for 10 minutes;

[0058] (3) Cool down the reaction kettle to 54°C, open the kettle and discharge the material, put i...

Embodiment 3

[0070] This embodiment provides a kind of artificial board with electromagnetic shielding function, specifically a conductive plastic film facing medium density fiberboard with a thickness of 12 mm, and the preparation method is as follows:

[0071] S1. Preparation of conductive plastic film

[0072] (1) Put 45 parts by mass of polypropylene resin and 23 parts by mass of ethylene-polyethylene terephthalate copolymer into the reactor for dry mixing. During this process, slowly add 25 parts by mass of the particle size distribution range 10-25nm nano-scale bamboo charcoal with an average particle size of 20nm, the feeding is completed within 10 minutes, and then the three continue to dry mix for 25 minutes;

[0073] (2) Heat the reaction kettle to 145°C, add 5 parts by mass of zinc oxide powder, 0.5 parts by mass of dioctyl phthalate, and 1.5 parts by mass of silane coupling agent, and then mix and stir for 10 minutes;

[0074] (3) Cool down the reaction kettle to 54°C, open th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of board manufacturing, and particularly discloses an artificial board with an electromagnetic shielding function and a preparation method of the artificial board. The artificial board comprises a base material and a conductive plastic film adhered to the surface of the base material, The conductive plastic film is at least prepared from the following raw materials: polypropylene resin, nanoscale conductive bamboo charcoal, an ethylene-polyethylene glycol terephthalate copolymer, zinc oxide powder, a plasticizer and a coupling agent. The base material is a wood board formed by coating the surface of a wood veneer with a sizing material, or a wood board formed by mixing the sizing material with shavings / fibers; the sizing material comprises a resin matrix, carbon nanotubes and graphene, and the resin matrix is melamine modified urea resin or melamine formaldehyde resin. The artificial board is high in electromagnetic shielding efficiency; the weight is light, and layering is not likely to occur; the static bending strength is high, and cracking deformation is not likely to happen; manufacturing process is simple.

Description

technical field [0001] The invention belongs to the technical field of plate manufacturing, and in particular relates to an artificial plate with electromagnetic shielding function and a preparation method thereof. Background technique [0002] Today, with the rapid development of science and technology, electronic equipment has become an indispensable part of human life. These electronic equipment will generate a large amount of electromagnetic energy while serving human beings. Electromagnetic waves are the main way of electromagnetic energy transmission. When electromagnetic waves radiate outward, there will be Interference with other adjacent equipment will affect its operation, endanger the information security of communication facilities, and electromagnetic waves will also damage human health. [0003] The role of electromagnetic shielding is to cut off the propagation path of electromagnetic waves, thereby eliminating interference. Electromagnetic shielding wood-bas...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L67/02C08K3/04C08K3/22C08K13/02C08J5/18C09J161/30C09J11/04C09J11/08B32B21/00B32B21/08B32B27/32B32B7/12B32B21/04B32B37/08B32B37/10B32B37/12B32B37/06B32B38/00B32B21/02
Inventor 冯辰旭叶交友刘元强沈娟霞陆鸣亮孙文举王敏罗来朋
Owner DEHUA TB NEW DECORATION MATERIAL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com