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Preparation method for porous bionic wood ceramics

A wood and ceramic technology, applied in the field of bionic materials, can solve problems such as uneven impregnation, insufficient internal impregnation, and decline in mechanical properties of products

Inactive Publication Date: 2018-10-16
FOSHAN LINGXIE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is: aiming at the problem that the impregnation method adopted in the preparation process of traditional porous bionic wood-based ceramics tends to lead to uneven impregnation and insufficient internal impregnation, which leads to a decrease in the mechanical properties of the product, a porous bionic ceramic is provided. Preparation method of biomimetic wood-based ceramics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Pour deionized water into the beaker, then move the beaker into a magnetic stirrer with digital display speed measurement and constant temperature, and add ferrous sulfate into the beaker at a temperature of 65°C and a speed of 500r / min until the ferrous sulfate is no longer Dissolve, and then add calcium nitrate under constant temperature stirring until the calcium nitrate is no longer dissolved, then filter the material in the beaker while it is hot, remove the filter residue, and obtain the filtrate, and store the obtained filtrate at a temperature of 65 ° C to obtain saturated Salt solution; cut the wood into blocks with a length of 10cm, a width of 5.5cm, and a height of 8cm, and then move the blocks into a vacuum freeze-drying oven to dry to constant weight to obtain dry blocks; then dry the blocks with iron wire Fix it at the bottom of the water tank, and then inject a saturated salt solution at a temperature of 65°C into the water tank until the saturated salt so...

example 2

[0022]Cut the wood into blocks with a length of 10 cm, a width of 5.5 cm, and a height of 8 cm, and then move the blocks into a vacuum freeze-drying oven to dry to constant weight to obtain dry blocks; transfer the dry blocks into a reaction kettle, At a temperature of 39°C, nitrogen loaded with trimethylaluminum was passed into the reactor at a rate of 200mL / min until the pressure in the reactor reached 0.18MPa, then the reactor was sealed, and the reactor was blown at a rate of 0.5°C / min. The temperature in the reaction kettle was raised to 70°C by program, and the pressure in the reaction kettle was increased to 0.4MPa. After 8 hours of pressure-holding reaction, the pressure was released to normal pressure, and the material was discharged to obtain a fumigated block; after mixing the obtained fumigated block with the resin, Vacuum impregnation for 6 hours, and then molding the resin-impregnated fumigated block to obtain a molded block, and then moved the molded block into a...

example 3

[0024] Pour deionized water into the beaker, then move the beaker into a magnetic stirrer with digital display speed measurement and constant temperature, and add ferrous sulfate into the beaker at a temperature of 65°C and a speed of 500r / min until the ferrous sulfate is no longer Dissolve, and then add calcium nitrate under constant temperature stirring until the calcium nitrate is no longer dissolved, then filter the material in the beaker while it is hot, remove the filter residue, and obtain the filtrate, and store the obtained filtrate at a temperature of 65 ° C to obtain saturated Salt solution; cut the wood into blocks with a length of 10cm, a width of 5.5cm, and a height of 8cm, and then move the blocks into a vacuum freeze-drying oven to dry to constant weight to obtain dry blocks; then dry the blocks with iron wire Fix it at the bottom of the water tank, and then inject a saturated salt solution at a temperature of 65°C into the water tank until the saturated salt so...

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Abstract

The invention discloses a preparation method for porous bionic wood ceramics, and belongs to the technical field of bionic materials. The method comprises the following steps that wood is cut into blocks and is subjected to vacuum freeze drying to constant weight so as to obtain dry blocks; the dry blocks are fixed to the bottom of a water tank, are soaked in a saturated salt solution, are subjected to ultrasonic impregnation, are naturally cooled to the room temperature, then are taken out from the water tank and are subjected to vacuum freeze drying so as to obtain blocks subjected to salt solution impregnation; then the blocks subjected to salt solution impregnation are transferred into a reaction kettle, and nitrogen loaded with trimethylaluminum is introduced into the reaction kettleunder the condition that the temperature is 39 DEG C, pressure maintaining is carried out for reaction for 6-8 hours, and then the pressure is released to normal pressure so as to obtain fumigated blocks; and the obtained fumigated blocks is mixed with resin and impregnated, and then subjected to compression molding, calcining at an inert gas protection state, and cooling so as to obtain the porous bionic wood ceramics. The porous bionic wood ceramics obtained through the preparation method has excellent mechanical properties.

Description

technical field [0001] The invention discloses a method for preparing porous bionic wood-based ceramics, which belongs to the technical field of bionic materials. Background technique [0002] Wood ceramics, the main raw material is wood (or wooden material) impregnated with phenolic resin. The raw materials are sintered in the absence of oxygen to produce wood ceramics. The manufacturing process of wood ceramics can be divided into three types: a. wood materials are impregnated with resin first, then carbonized to obtain wood ceramic plates, and then processed into finished products; b. wood materials are first cut and shaped, then impregnated with resin, and sintered at high temperature , and finally grinding; c. Wood fibers are mixed with phenolic resin, hardened and formed, then sintered at high temperature, and then ground. In the whole manufacturing process of wood ceramics, the key steps are resin impregnation and high temperature sintering of wood ceramics. ...

Claims

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Application Information

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IPC IPC(8): C04B35/524C04B35/622C04B38/06C04B38/02
CPCC04B35/524C04B35/622C04B38/02C04B38/067C04B38/0675C04B2235/3218C04B2235/443C04B2235/448C04B2235/96
Inventor 胡丽春许永博朱东东
Owner FOSHAN LINGXIE ENVIRONMENTAL PROTECTION TECH CO LTD
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