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Metallized wood wave-absorbing plate and preparation method thereof

A metallized and wood-based technology, applied in the direction of chemical instruments and methods, metal layered products, layered products, etc., can solve the problems of increased cost and difficulty in manufacturing, and achieve the effect of strong microwave absorption, good toughness, and light weight

Active Publication Date: 2021-02-26
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The basis for its selection mainly includes the following aspects: one is to obtain a wider sound absorption spectrum, and the sound absorption coefficient meets certain requirements within the specified noise frequency range; the other is to have sufficient strength, stiffness and hardness to be able to Bear a certain load; third, the manufacturing process is easy to implement, low in cost, and has obvious environmental protection features; fourth, the structure should be simple, and an overly complicated structure is not only difficult to manufacture, but also increases the cost of materials in transportation, installation, use, and maintenance; five It is to ensure excellent comprehensive performance, including corrosion resistance, fire prevention, moisture resistance, non-toxic, beautiful, etc.

Method used

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  • Metallized wood wave-absorbing plate and preparation method thereof
  • Metallized wood wave-absorbing plate and preparation method thereof
  • Metallized wood wave-absorbing plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A metallized wooden wave-absorbing plate, which is made of three materials: cotton stalk-based composite powder and brass screen in a weight ratio of 1:1:1; the cotton stalk-based composite The powder is composed of 30% cotton stalk powder, 25% sendustam absorbing powder, 30% metal nickel powder, and 15% thermoplastic toughened polyimide resin powder by weight percentage; the preparation of the cotton stalk-based composite powder The method includes the following steps:

[0040](1) Cotton stalk extraction pretreatment: vacuum-dry the cotton stalk to control its moisture content to 15%, then soak it in 5% NaOH solution at room temperature for 15 hours, rinse and dry to reduce the hemicellulose content. Reduced by 30%, then soaked in a 1:1 "acetic acid + hydrogen peroxide" solution at room temperature for 3 hours, rinsed and dried to reduce the lignin content by 30%, and the pretreated cotton stalks were obtained for the preparation of cotton stalk powder for subsequent u...

Embodiment 2

[0048] A metallized wooden wave-absorbing board, the board is made of cotton stem lotus root scraps, cotton stem-based composite powder, and brass screen in a weight ratio of 2:2:1; the cotton stem-based composite The powder is composed of 40% cotton stem powder, 30% sendust wave absorbing powder, 20% metallic nickel powder, and 10% thermoplastic toughened polyimide resin powder in terms of weight percentage; the preparation of the cotton stem-based composite powder The method includes the following steps:

[0049] (1) Cotton stalk extraction pretreatment: vacuum dry the cotton stalk to control its moisture content to 20%, then soak it in 10% NaOH solution at room temperature for 5 hours, rinse and dry to reduce the hemicellulose content. Reduced by 40%, then soaked in a 1:1 "acetic acid + hydrogen peroxide" solution at room temperature for 5 hours, rinsed and dried to reduce the lignin content by 40%, to obtain pretreated cotton stems for the preparation of cotton stem powder...

Embodiment 3

[0057] A metallized wooden wave-absorbing plate, which is made of three materials: cotton stalk-based composite powder and brass screen in a weight ratio of 1:1:1; the cotton stalk-based composite The powder is composed of 32% of cotton stem powder, 35% of sendust wave absorbing powder, 23% of metal nickel powder, and 10% of thermoplastic toughened polyimide resin powder in terms of weight percentage; the preparation of the cotton stem-based composite powder The method includes the following steps:

[0058] (1) Cotton stalk extraction pretreatment: vacuum dry the cotton stalk to control its moisture content at 16%, then soak it in 8% NaOH solution for 10 hours at room temperature, rinse and dry to reduce the hemicellulose content. Reduced by 35%, then soaked in a 1:1 "acetic acid + hydrogen peroxide" solution at room temperature for 4 hours, rinsed and dried to reduce the lignin content by 35%, to obtain pretreated cotton stems for the preparation of cotton stem powder for sub...

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Abstract

The invention discloses a metallized wooden wave-absorbing plate, which belongs to the field of new materials and is prepared by compounding three materials, namely cotton stalk coupling crushed aggregates, cotton stalk-based composite powder and a brass screen according to a weight ratio of 1-2: 1-2: 1, and further discloses a preparation method of the metallized wooden wave-absorbing plate. Thepreparation method comprises three steps of raw material paving, warm pressing forming and edge cutting. The wave-absorbing material prepared by the invention is light in weight, good in toughness, strong in wave-absorbing capacity, heat-resistant and moisture-resistant, has metal characteristics, and can be used in various indoor and outdoor environments.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to a metallized wooden wave-absorbing plate and a preparation method thereof. Background technique [0002] With the rapid development of my country's extensive economy, the consumption of resources and energy is increasing day by day, and the unit resources and energy consumption are the highest in the world. my country has become the world's largest energy and resource consumption country. The pressure of environmental pollution is unprecedentedly huge. Utilization is urgent, and it is imminent to promote energy conservation and emission reduction, develop green and circular economy, and build a resource-saving and environment-friendly society. [0003] After decades of construction and development, the infrastructure and equipment of many industries in my country have been perfected day by day, but the associated noise, waste gas, waste water, waste residue and dust have a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L79/08C08K3/08C08K3/02C08K7/06C08K13/04B32B15/02B32B15/20B32B15/14B32B37/06B32B37/10B32B38/00
CPCC08L97/02B32B15/02B32B15/14B32B15/011B32B37/06B32B37/10B32B38/0004C08K2003/0862C08K2003/0856C08K2003/0812C08K2003/023B32B2262/103B32B2264/06B32B2264/10B32B2264/105B32B2264/0221B32B2307/56B32B2307/558B32B2307/718B32B2307/306C08L79/08C08K3/08C08K3/02C08K7/06C08K13/04
Inventor 陈飞刘意何慧吴逸刘克非吴庆定
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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