Method for preparing amphiphobic wood/calcium carbonate composite material by biomimetic mineralization in-situ process

An in-situ preparation and biomimetic mineralization technology, applied in the direction of wood impregnation, impregnated wood, wood processing equipment, etc., can solve the problems of high energy consumption and increased cost of composite materials, and achieve low energy consumption, low cost, and improved mechanical strength Effect

Inactive Publication Date: 2010-08-11
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of high energy consumption in the preparation process of the existing composite material, which increases the cost of the composite material, and additionally requires additional surface treatment of the composite material, and provides a biomimetic mineralization method for in-situ preparation of double Methods for sparse wood / calcium carbonate composites

Method used

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  • Method for preparing amphiphobic wood/calcium carbonate composite material by biomimetic mineralization in-situ process
  • Method for preparing amphiphobic wood/calcium carbonate composite material by biomimetic mineralization in-situ process

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specific Embodiment approach 1

[0011] Specific Embodiment 1: The method for preparing amphiphobic wood / calcium carbonate composite material in situ by the biomimetic mineralization method of this embodiment is carried out according to the following steps: 1. Calcium chloride solution with a concentration of 0.1mol / L to 2mol / L is prepared Two, prepare the alcohol solution of the organic amphoteric surfactant, wherein the organic amphoteric surfactant in the alcohol solution: the mass ratio of alcohol is 1:1~100; The alcohol solution of the prepared organic amphoteric surfactant is mixed, wherein the mass ratio of calcium chloride:organic amphoteric surfactant is 1:0.01~0.5, and stirred at 10℃~60℃ for 0.5h~3h to obtain the mixed solution; four, immerse the wood material in the mixed solution obtained in step three for 0.5 to 10 days; five, immerse the wood treated in step four in a sodium carbonate solution with a concentration of 0.1mol / L to 2mol / L impregnated until the mass increase rate of the wood was ≤4%...

specific Embodiment approach 2

[0013] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the organic amphoteric surfactant described in step 2 is betaine type amphoteric surfactant, imidazoline type amphoteric surfactant, aminopropionic acid type amphoteric surfactant active agent or taurine-type amphoteric surfactant. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0014] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the alcohol described in step 2 is ethanol or methanol. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method for preparing an amphiphobic wood / calcium carbonate composite material by a biomimetic mineralization in-situ process, which relates to a wood composite material preparing method. The method solves the problems of the traditional wood composite material preparing method that the energy consumption is large and the additional surface treatment is singly required to the composite material. The method comprises the following steps of: firstly, preparing a calcium chloride solution and an alcohol solution of an organic amphiphatic surface active agent; mixing the two solutions to obtain a mixing solution; immersing the wood into the mixing solution to impregnate; then, moving the wood into a calcium carbonate solution to impregnate; and finally, drying to obtain the amphiphobic wood / calcium carbonate composite material. The invention has the advantages of simultaneous performance of compounding and surface nature modification, simple operation, no use of expensive equipment, little energy consumption, low cost, static bending strength of the composite material of 80-83Mpa, elasticity modulus of 13500-13600Mpa, and compression strength parallel to grain of 65-68Mpa, and can be used as building structure, indoor decoration, floor and furniture materials.

Description

technical field [0001] The invention relates to a method for preparing wood composite materials. Background technique [0002] Due to the characteristics of the original wood structure, it has the characteristics of strong water absorption, low strength and hardness, and its application field is limited. However, the strength, density, hardness and durability of the modified composite material have been greatly improved and broadened. Applications of wood. The preparation method of the existing inorganic composite board is to first cook the wood with lye, soak it in warm water and dry it to remove the lignin, then repeatedly impregnate the inorganic matter and dry it to obtain the composite material under controlled conditions; the existing The method for modifying wood with nanomaterials is to disperse nanomaterials in uncrosslinked polymer prepolymerization liquid as an impregnation liquid, then immerse the dry wood into the impregnation liquid, and use a vacuum tank at 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/02B27K3/52
CPCB27K3/0292B27K3/18B27K3/32
Inventor 李坚王成毓
Owner NORTHEAST FORESTRY UNIVERSITY
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