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A kind of manufacturing method of large-format silicon carbide bamboo ceramic plate

A technology of surface silicon carbide and a manufacturing method, which is applied in the directions of manufacturing tools, pretreatment of molding materials, flat products, etc., can solve the problems of high difficulty, poor density uniformity of wood ceramics, complicated operation process, etc., and achieves good physical properties and preparation. The effect of low cost and simple preparation process

Active Publication Date: 2016-05-18
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are some disadvantages in the preparation methods of silicon carbide wood ceramics: first, silicon carbide is almost always treated by pressurizing or vacuumizing in a closed container, and the operation process is complicated and low in efficiency; second, silicon carbide wood ceramics The sintering is carried out in a vacuum sintering furnace or a sintering furnace protected by an inert gas, so that the size of the wood ceramics produced is small; at the same time, due to the sintering in a sealed condition, the operation process is complicated and the large-scale industrial production is difficult. The third is that the obtained wood ceramics have poor density uniformity and low strength, so it is difficult to popularize and apply
Therefore, the process technology of silicon carbide wood ceramics is obviously not suitable for making silicon carbide bamboo ceramics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for manufacturing large-format silicon carbide bamboo ceramic plates includes the following steps:

[0021] (1) Preparation of high-strength bamboo slices: select 5-7 year-old moso bamboos, cut the bamboo stalks with a high density of vascular bundles above 4m as the raw material, and then cut the bamboo tube between the bamboo sections to make The bamboo tube does not contain bamboo joints, and then the bamboo tube is cut into pieces, and the bamboo slices are made to remove the bamboo green and bamboo yellow. Finally, a 2-3mm thick bamboo slice of uniform material is cut from the dense bamboo meat near the bamboo green part , Make high-strength bamboo chips.

[0022] (2) Preparation of bamboo charcoal powder: Put the high-strength bamboo chips obtained in step (1) into a carbonization furnace for carbonization, the carbonization temperature is controlled between 400℃-500℃, and the carbonization time is controlled between 7-11h After cooling out, the bamboo charco...

Embodiment 2

[0032] The difference compared with Example 1 is: the weight of each component in step (3) is: 30 parts of bamboo charcoal powder, 50 parts of nano silica sol, 15 parts of phenolic resin adhesive, and 5 parts of isocyanate adhesive ;

[0033] The physical properties of the large-format silicon carbide bamboo ceramic plate prepared in this embodiment are as follows:

[0034] The density is 0.95g / cm 3 , Vickers hardness is 7kg / mm 2 , The static bending strength is 75MPa, and the elastic modulus is 5000MPa.

Embodiment 3

[0036] The difference compared with Example 1 is: the weight of each component in step (3) is: 20 parts of bamboo charcoal powder, 30 parts of nano silica sol, 8 parts of phenolic resin adhesive, and 2 parts of isocyanate adhesive ;

[0037] The physical properties of the large-format silicon carbide bamboo ceramic plate prepared in this embodiment are as follows:

[0038] The density is 0.90g / cm 3 , Vickers hardness is 7.5kg / mm 2 , The static bending strength is 70MPa, and the elastic modulus is 5200MPa.

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Abstract

The invention discloses a manufacturing method for a large format silicon carbide bamboo ceramic plate. The method comprises the following steps of high strength bamboo chip preparation, bamboo powdered carbon preparation, mixed pulp preparation through blending, slab pavement, and pressing of the large format silicon carbide bamboo ceramic plate. The manufacturing method for the large format silicon carbide bamboo ceramic plate is simple in preparation process, a special device is not necessary, preparation cost is low, the ceramic plate with the size and specification of 2440mm*1220mm can be prepared, the prepared large format silicon carbide bamboo ceramic plate has good physical properties, the density of ceramic plate is not less than 0.95g / cm<3>, Vickers hardness is not less than 7kg / m<2>, static bending intensity is not less than 70MPa, and elasticity modulus is not less than 5000MPa.

Description

Technical field [0001] The invention belongs to the field of bamboo composite materials, and in particular relates to a method for manufacturing large-format silicon carbide bamboo ceramic plates. Background technique [0002] A new type of porous carbon material made by impregnating wood or waste wood in thermosetting resin and then roasting and carbonizing in a vacuum high-temperature furnace, called carbon wood ceramics, has become a research hotspot in recent years, but the raw materials for the development of wood ceramics are all For wood, there are very few reports on bamboo. While my country's timber resources are extremely scarce, bamboo resources are abundant. Therefore, the research and development of bamboo ceramics to give full play to the role of "substituting bamboo for wood" is of great significance for saving wood resources and alleviating the tension between wood supply and demand. [0003] At present, the concept of wood ceramics has been extended. Among them, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27M1/06B27N1/02B27N3/08
Inventor 杜春贵金春德鲍滨福
Owner ZHEJIANG FORESTRY UNIVERSITY