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Wood liquefied carbide fiber, protofilament and preparation method thereof

A carbon fiber precursor and wood technology, applied in the fields of fiber chemical characteristics, textiles and papermaking, can solve the problems of low carbon yield and tensile strength of carbon fiber, complicated preparation process, high production cost, etc.

Inactive Publication Date: 2008-03-05
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of preparation process is complicated, the production cost is high, and the decomposition will pollute the environment. The carbon yield and tensile strength of carbon fiber are low, and it also makes a large number of other carbon-containing molecules in wood abandoned, which limits the development of this type of carbon fiber material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Wood is pulverized into powder of 80 meshes (mesh aperture 0.18mm), then this wood powder and 4 times of wood weight phenol and catalyst phosphoric acid (phosphoric acid concentration is 85%) add-on is 8% of phenol add-on) Put it in a three-neck glass bottle, place it in an oil bath preheated to 160° C., install a condenser, start the stirring device (rotating speed 1058 rpm) to liquefy the wood, and the liquefaction time is 2.5 hours to obtain a wood liquefaction.

[0034] Take the wood liquefaction and add paraformaldehyde with 3% weight of the liquefaction, heat from room temperature to 100°C at a constant speed for 20 minutes, and react for 2 minutes to obtain the wood liquefaction spinning solution for spinning. Add the spinning solution into the spinning machine, at 0.05MPaN 2 Press down and spin at 120°C to make wood liquefaction carbon fiber precursors. Spinning process conditions: the diameter of the spinneret hole is 1mm (single hole), the rotation speed of t...

Embodiment 2

[0041] Wood is pulverized into 60 mesh powders, then this wood powder and 5 times of wood weight phenol and catalyst phosphoric acid (phosphoric acid concentration is 85%) add-on is 6% of phenol add-on) join in the there-necked glass bottle, place In an oil bath preheated to 150° C., a condenser is installed, and a stirring device (rotating speed 1058 rpm) is started to liquefy the wood. The liquefaction time is 3 hours to obtain a wood liquefaction product.

[0042] Take the wood liquefaction and add furfural according to 5% of the weight of the liquefaction, heat from room temperature to 120° C. at a constant speed for 40 minutes, and react for 5 minutes to obtain the wood liquefaction spinning solution for spinning. Add the spinning solution into the spinning machine, at 0.03MPaN 2 Press down and spin at 120°C to make wood liquefaction carbon fiber precursors. Spinning process conditions: the diameter of the spinneret hole is 1 mm (single hole), the speed of the take-up ro...

Embodiment 3

[0049] Wood is pulverized into 40 mesh powders, then this wood powder and 6 times of phenol of wood weight and catalyst phosphoric acid (phosphoric acid concentration is 85%) add-on is 8% of phenol add-on) join in the there-necked glass bottle, place In an oil bath preheated to 160° C., a condenser is installed, and a stirring device (rotating speed 1058 rpm) is started to liquefy the wood. The liquefaction time is 2.5 hours to obtain a wood liquefaction product.

[0050] Take the wood liquefaction and the mixture of hexamethylenetetramine and paraformaldehyde (arbitrary ratio) of 6% by weight of the liquefied product, heat evenly from room temperature to the synthesis temperature of 130°C for 50 minutes, and react for 10 minutes to obtain the wood liquefaction used for spinning. spinning solution. Add the spinning solution into the spinning machine, at 0.05MPaN 2 Press down and spin at 120°C to make wood liquefaction carbon fiber precursors. Spinning process conditions: the...

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Abstract

The present invention discloses one kind of wood fibril and carbon fiber prepared therewith. The wood fibril for preparing carbon fiber is prepared through crushing wood into wood powder, phosphoric acid catalyzed phenol liquefaction of wood powder to obtain wood fluid, mixing with synthesizing agent in certain amount, heating the mixture to react to obtain wood spinning fluid and spinning to obtain wood fibril. The wood fibril is then prepared into carbon fiber through soaking into acid solution of aldehyde and heating to cure to obtain fibril with enhanced mechanical performance, and carbonizing to obtain carbon fiber with performances similar to that of other universal carbon fiber.

Description

technical field [0001] The invention relates to a carbon fiber, specifically, a carbon fiber prepared by utilizing wood liquefaction, the invention also relates to a precursor of the carbon fiber, and a method for preparing the carbon fiber and the precursor thereof. Background technique [0002] Carbon fiber has both the inherent characteristics of carbon materials and the softness and processability of textile fibers. It is the most important reinforcing material for advanced composite materials. It has been widely used in various fields of military and civilian industries, from civil industries such as aerospace, aviation, automobiles, electronics, machinery, chemicals, and textiles to sports equipment and leisure products. Therefore, carbon fiber is considered to be a typical representative of new industrial materials in the high-tech field. It is not only of great significance to the adjustment of my country's industrial structure and the replacement of traditional mate...

Claims

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Application Information

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IPC IPC(8): D01F9/16
Inventor 马晓军赵广杰
Owner BEIJING FORESTRY UNIVERSITY
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