Architectural ornament wood-plastic plate for shielding broadband electromagnetic waves and preparation method

An architectural decoration, electromagnetic wave technology, applied in the direction of magnetic/electric field shielding, electrical components, etc., to achieve the effect of broadening the frequency band, enhancing the reflection loss, and overcoming the small dielectric loss

Inactive Publication Date: 2020-06-05
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem that the currently widely used building decoration materials with electromagnetic shielding function do not have the function of shielding broadband electromagnetic waves, and the defects that commonly used ferrite is not suitable for application in building materials, the present invention proposes a building decoration that shields broadband electromagnetic waves Wood-plastic board and its preparation method, thereby effectively realizing the good application of ferrite materials in building materials, and the obtained wood-plastic board has good electromagnetic shielding function

Method used

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  • Architectural ornament wood-plastic plate for shielding broadband electromagnetic waves and preparation method
  • Architectural ornament wood-plastic plate for shielding broadband electromagnetic waves and preparation method

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Experimental program
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Effect test

Embodiment 1

[0034] The preparation process is:

[0035] (1) Dissolve chitosan in acetic acid solution, then add graphene, stir ultrasonically until it is evenly dispersed to obtain a spinning stock solution, then perform wet spinning, and spray it out through a double-ring sleeve-shaped spinneret, Prepare the hollow chitosan fiber of loaded graphene; Wherein, chitosan 32 weight parts, acetic acid solution 120 weight parts, graphene 12 weight parts; The mass concentration of acetic acid solution is 6%; Wet spinning spinneret The pore diameter is 0.4m, the number of holes is 180 holes, and the coagulation bath is a mixed solution of 5wt% NaOH and ETOH;

[0036] (2) Ni (NO 3 ) 2 ·6H 2 O and Fe 2 (NO 3 ) 3 ·6H 2 O is mixed and prepared according to the molar ratio of 1:2, Ni(NO 3 ) 2 ·6H 2 O and Fe 2 (NO 3 ) 3 ·6H 2 O is mixed and formulated into a precursor solution with a mass concentration of 15%. Take 100 parts by weight and then add 37 parts by weight of the graphene-loaded...

Embodiment 2

[0039] The preparation process is:

[0040] (1) Dissolve chitosan in acetic acid solution, then add graphene, stir ultrasonically until it is evenly dispersed to obtain a spinning stock solution, then perform wet spinning, and spray it out through a double-ring sleeve-shaped spinneret, Prepare the hollow chitosan fiber of loading graphene; Wherein, chitosan 30 weight parts, acetic acid solution 130 weight parts, graphene 10 weight parts; The mass concentration of acetic acid solution is 5%; Wet spinning spinneret The pore diameter is 0.3m, the number of holes is 180 holes, and the coagulation bath is a mixed solution of 5wt% NaOH and ETOH;

[0041] (2) Ni (NO 3 ) 2 ·6H 2 O and Fe 2 (NO 3 ) 3 ·6H 2 O is mixed and prepared according to the molar ratio of 1:2, Ni(NO 3 ) 2 ·6H 2 O and Fe 2 (NO 3 ) 3 ·6H 2 O is mixed and formulated into a precursor solution with a mass concentration of 15%. Take 90 parts by weight and then add 40 parts by weight of the graphene-loaded...

Embodiment 3

[0044] The preparation process is:

[0045] (1) Dissolve chitosan in acetic acid solution, then add graphene, stir ultrasonically until it is evenly dispersed to obtain a spinning stock solution, then perform wet spinning, and spray it out through a double-ring sleeve-shaped spinneret, Prepare the hollow chitosan fiber of loading graphene; Wherein, chitosan 34 weight parts, acetic acid solution 120 weight parts, graphene 13 weight parts; The mass concentration of acetic acid solution is 7%; Wet spinning spinneret The pore diameter is 0.5m, the number of holes is 180 holes, and the coagulation bath is a mixed solution of 6wt% NaOH and ETOH;

[0046] (2) Ni (NO 3 ) 2 ·6H 2 O and Fe 2 (NO 3 ) 3 ·6H 2 O is mixed and prepared according to the molar ratio of 1:2, Ni(NO 3 ) 2 ·6H 2 O and Fe 2 (NO 3 ) 3 ·6H 2 O mixed and prepared into a precursor solution with a mass concentration of 15%, take 100 parts by weight, and then add 33 parts by weight of the graphene-loaded ho...

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Abstract

The invention provides an architectural ornament wood-plastic plate capable of shielding broadband electromagnetic waves and a preparation method. The preparation method comprises the following steps:adding chitosan and graphene into an acetic acid solution to prepare graphene-loaded hollow chitosan fibers; and then mixing the graphene-embedded tubular spinel ferrite with a silane coupling agent,wood powder particles, PVC resin, a foaming agent, nano calcium carbonate, a calcium-zinc stabilizer, an impact modifier, a lubricating agent and color master batch, and performing extrusive shaping,thereby obtaining the architectural decoration wood-plastic plate capable of shielding the broadband electromagnetic wave. In the method, tubular spinel ferrite, is embedded in the wood-plastic plate, so that compared with the prior art, reflection loss of electromagnetic waves is enhanced, and the defects that ferrite dielectric loss is small and surface density is large are overcome. Accordingto the invention, frequency band broadening and microwave absorption performance displaying are facilitated, so that the prepared wood-plastic plate has the advantages of being light in weight and good in shielding effect and has the effect of shielding broadband electromagnetic waves when applied to electromagnetic shielding of buildings.

Description

technical field [0001] The invention relates to the field of electromagnetic shielding materials, in particular to an electromagnetic shielding decorative material, in particular to a building decoration wood-plastic board for shielding broadband electromagnetic waves and a preparation method thereof. Background technique [0002] Electromagnetic shielding materials refer to a class of protective functional materials with electromagnetic wave shielding function. Ecological mineral materials refer to a class of mineral materials that have the function of purifying the environment. With the development of material processing technology, electromagnetic shielding materials and ecological mineral materials are processed into various building structural materials. On the one hand, the building has the function of preventing electromagnetic pollution, and on the other hand, the building has the function of ecological protection. However, in the field of building decoration materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L97/02C08K13/06C08K9/12C08K3/04C08K7/00C08K3/22C08K3/26C08J9/10H05K9/00
CPCC08J9/0061C08J9/0071C08J9/0085C08J9/009C08J9/0095C08J9/103C08J2203/04C08J2327/06C08J2497/02H05K9/0081
Inventor 陈庆昝航何方陈涛曾军堂
Owner CHENDU NEW KELI CHEM SCI CO LTD
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