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Method for preparing lignocellulose for road

A wood fiber and road-use technology, applied in the field of road wood fiber preparation, can solve the problems of inconvenient addition of asphalt mixture, no public reports in literature, high sealing requirements, etc., and achieve low production cost, high oil absorption value, and preparation process conditions moderating effect

Inactive Publication Date: 2006-03-22
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are loose road lignin fibers developed by Baoheng Technology Development Co., Ltd. of Jilin Highway Bureau in China. However, loose road lignin fibers are easy to absorb moisture and require high sealing during the packaging process. It is not convenient to add to the asphalt mixture and other defects
Nevertheless, no matter whether it is abroad or at home, there is no public report on the preparation method of road lignin fiber.

Method used

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  • Method for preparing lignocellulose for road

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Take 0.4Kg of coated kaolin and add it to a high-speed heating mixer, set the temperature at 30°C, start the machine for 5 minutes, add titanate coupling agent 311-7 into the mixer, the titanate coupling agent The addition amount is 8g, the machine is turned off after 45 minutes of modification, the coated kaolin after modification is taken out, and the activation index is determined to be 82%.

[0021] Discarded newsprint is selected as the fiber raw material, the cellulose content is 93.4%, and the ash content is 6.6%. Take newsprint 3.6Kg and soak in water for 1 hour, make it into fiber pulp with beating equipment, the slurry concentration is 3%, pour the fiber slurry into composite equipment, add the coated kaolin after modification in the composite equipment, Start the emulsifier, control the rotor speed to 3000r / min, and after 10 minutes of timing, the compounding is completed. Pour the compounded slurry into the filter bag for filtration. After filtering, the fib...

example 2

[0024] Take 0.57Kg of coated kaolin and add it to a high-speed heating mixer, set the temperature at 35°C, start the machine for 5 minutes, add titanate coupling agent 311-7 into the mixing tank, the titanate coupling agent The addition amount is 17g, the machine is turned off after 50 minutes of modification, the coated kaolin after modification is taken out, and the activation index is determined to be 87%.

[0025]Discarded newsprint is selected as the fiber raw material, the cellulose content is 93.4%, and the ash content is 6.6%. Take newsprint 3.43Kg and soak in water for 1 hour, make it into fiber slurry with beating equipment, the slurry concentration is 4%, pour the fiber slurry into composite equipment, add the coated kaolin after modification in the composite equipment, Start the emulsifier, control the rotor speed to 4000r / min, and after 15 minutes, the reaction is over. Pour the reacted slurry into the filter bag for filtration. After filtering, the fibers are ent...

example 3

[0028] Take 0.73Kg of coated kaolin and add it to a high-speed heating mixer, set the temperature at 40°C, start the machine for 5 minutes, add titanate coupling agent 311-7 into the mixing tank, the titanate coupling agent The addition amount is 29g, the machine is turned off after 60 minutes of modification, the coated kaolin after modification is taken out, and the activation index is determined to be 85%.

[0029] Discarded newsprint is selected as the fiber raw material, the cellulose content is 93.4%, and the ash content is 6.6%. Take newsprint 3.27Kg and soak in water for 1 hour, make it into fiber slurry with beating equipment, the slurry concentration is 5%, pour the fiber slurry into composite equipment, add the coated kaolin after modification in the composite equipment, Start the emulsifier, control the rotor speed to 5000r / min, and after 20 minutes of timing, the reaction is over. Pour the reacted slurry into the filter bag for filtration. After filtering, the fib...

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Abstract

The invention refers to a method of preparing wood fiber for road. The method is as follows: use scrap newspapers as raw materials, and after cleaning &purifying, soaking and pulping, compound it and ultra-small powder of denatured kaolin under normal temperature and pressure, the kaolin's magnitude is 11%-23% (wt%) of fiber's; then after dehydration, desiccation and scatterning, the fiber production is made into scattered-shape wood fiber; then the wood fiber is mixed with pitch solution under normal temperature and pressure and stirring condition, then control the temperature to be 70-100 degree C to make solvent oil volatilize and then cool it for circular utilization; then extrude the fiber to shape and cool it to obtain the grain-shape road wood fiber.

Description

Technical field [0001] The invention relates to a preparation method of a fiber stabilizer, in particular to a preparation method of road wood fiber. Background technique [0002] The preparation method of road wood fiber is accompanied by the promotion and popularization of SMA pavement structure. SMA (Stone Matrix Asphalt), which is called asphalt horseshoe resin macadam mixture, is a new type of pavement structure widely used in developed countries. , it is a hot mix asphalt mixture made of discontinuously graded crushed stone and asphalt horseshoe grease (composed of asphalt, fiber stabilizer, mineral powder, and fine aggregate) at high temperature and used as a pavement wear layer or overlay. It has the characteristics of effective intercalation between aggregates, thick asphalt film, small void ratio, rough surface, and fiber reinforcement. Lignin fiber is one of the important components of SMA. The addition of this stabilizer can ensure the stability of asphalt durin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01G11/00C08J5/06C08L95/00
CPCY02W30/66
Inventor 韩跃新陈晓龙李启亮于福家王泽红袁志涛印万忠
Owner NORTHEASTERN UNIV LIAONING
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