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Cellulose skeleton material capable of being industrially produced and applied and preparation method thereof

A skeleton material, cellulose technology, applied in the direction of wood treatment, impregnating wood, manufacturing tools, etc., can solve the problem of difficulty in applying large size, and achieve the effects of reducing energy loss, good light transmission, and high promotion and application value

Active Publication Date: 2018-10-16
SOUTHWEST FORESTRY UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, researchers from the University of Maryland and Shanghai University, in order to study the transparent wood roof (8 cm x 12 cm), Cs x WO 3 / Transparent wood windows (30cm x 25cm) can only be spliced ​​with 6 pieces and 42 pieces of small-sized transparent wood with a thickness of 0.5cm for the light transmission and heat insulation performance, which indirectly shows the existing wood removal The plain method is difficult to apply to large-scale, ultra-thick wood

Method used

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  • Cellulose skeleton material capable of being industrially produced and applied and preparation method thereof
  • Cellulose skeleton material capable of being industrially produced and applied and preparation method thereof
  • Cellulose skeleton material capable of being industrially produced and applied and preparation method thereof

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preparation example Construction

[0020] A method for preparing a cellulose skeleton material capable of industrial production and application, including bleaching solution preparation, bleaching solution steaming / atomization and rinsing processes, specifically including:

[0021] A. Preparation of bleaching solution: Disperse the bleaching substance in water and stir evenly to obtain a bleaching solution, so that the concentration of the bleaching substance in the solution is 0.1-10 mol / L;

[0022] B. Bleach solution steaming / atomization: place the wood substrate to be treated on the grid, place the grid above the bleach solution, heat the bleach solution to 40°C~100°C, or atomize it into micron-sized droplets , steam / droplet bleaching for 0.2~48h to obtain bleached cellulose skeleton material;

[0023] C. Rinsing: Place the cellulose skeleton material obtained in step B on the grid, rinse with deionized water and ethanol for 3-5 times respectively, and immerse the cellulose skeleton in ethanol for future use...

Embodiment 1

[0036](1) Preparation of the cellulose wood skeleton material of the present invention

[0037] Process the wood sample of basswood with a moisture content of 10% to 5 cm x 5 cm x 5 cm and place it on a plastic grid (aperture size: 0.5 cm) in a glass beaker. The plastic grid is placed in 10 mol / L of hydrogen peroxide (2cm from the liquid surface), steamed at 100°C for 12 hours, then took out the wood-based composite material, rinsed it with deionized water and ethanol for 3 times, and obtained the cellulose wood skeleton material, which was stored in ethanol in solution.

[0038] (2) Performance testing of the cellulose wood skeleton material of the present invention

[0039] Detection methods: Determination of lignin content and determination of cellulose wood skeleton morphology, respectively, see "Biomacromolecules", Issue 4, 2016, starting page number: 1358-1364 and "Applied SurfaceScience", Volume 328, 2015, starting Pages: 453-458.

[0040] Test results: see Table 1,...

Embodiment 2

[0042] (1) Preparation of the cellulose wood skeleton material of the present invention

[0043] Process the basswood with a moisture content of 10% to be processed into a sheet-shaped wood sample of 0.08 x 21 x 19 cm and place it on a stainless steel grid (aperture size: 3.0 cm) in a stainless steel container, and place the stainless steel grid on a 5mol / L of hydrogen peroxide (0.1 cm from the liquid surface), steamed at 95°C for 6 hours, then took out the wood-based composite material, rinsed it with deionized water and ethanol for 4 times, and obtained the cellulose wood skeleton material, which was stored in in ethanol solution.

[0044] (2) Performance testing of the cellulose wood skeleton material of the present invention

[0045] Detection method: with embodiment 1.

[0046] Test results: see Table 1.

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Abstract

The invention discloses a cellulose skeleton material capable of being industrially produced and applied and a preparation method thereof. The material comprises celluloses and lignin; the content ofthe lignin is 0.8-10%; the cellulose skeleton material is kept in a fixed shape size of a traditional wood skeleton; the length size of the skeleton material is 1-50 cm, the width size is 1-50 cm, andthe thickness size is 0.01-5 cm; and microholes are formed in intercellular substances and cell walls of the skeleton material. The method comprises the procedures of preparation of bleaching liquid,steaming / atomization of the bleaching liquid and rinsing. The method retains the traditional wood skeleton to form the cellulose wood skeleton material. The cellulose skeleton material is large in size, big in thickness and adjustable in lignin content within 0.8-10%; epoxy resins with matched refraction rate are filled to obtain a transparent wood with corresponding size and thickness; the lighttransmittance can reach 90%; the light transmission is excellent; and the heat loss can be reduced.

Description

technical field [0001] The invention belongs to the technical field of material technology, and relates to a cellulose skeleton material with a porous structure, convenient use, industrial production and application and a preparation method thereof. Background technique [0002] Wood-based materials and their products are the only biological materials among the four most widely used materials (steel, cement, wood and plastic) in daily life and economic construction. Although it has the advantages of high strength-to-weight ratio, easy bonding, moderate rigidity and flexibility, and renewable utilization, because natural wood has micron-scale pores that scatter light in the visible range, and the lignin content is as high as 30%, lignin absorbs visible light, resulting in most Wood is opaque in appearance and has a certain color. As a light-transmitting material, glass is widely used as windows and transparent roofs. Studies have reported that 1 / 3 of the energy used to heat...

Claims

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Application Information

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IPC IPC(8): B27K5/02B27K3/02B27K3/36
Inventor 郑荣波郭雪莲李华杨
Owner SOUTHWEST FORESTRY UNIVERSITY
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