Method of producing stalk composite fiber material for road

A technology of composite fibers and straws, which is applied in fiber raw material treatment, non-fiber pulp addition, inorganic compound addition and other directions, can solve the problems of difficulty in removing waste paper ink, unstable raw material quality, unstable product quality, etc., and improve oil absorption. efficiency, solve unstable performance, and easy to industrialize the effect of production

Inactive Publication Date: 2008-12-03
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

Regarding lignin fiber, due to consideration of cost and technical processing reasons, domestic manufacturers all use waste paper as raw material, and many foreign manufacturers use waste paper as raw material. The main problem exists: the quality of raw materials is not stable
However, when used in actual production, due to the instability of raw materials, the product quality is unstable
And the waste paper ink is difficult to remove, which directly affects the oil absorption rate of the fiber
Although relevant foreign manufacturers have begun to use wood as raw material for the production of wood fiber to improve the quality of wood fiber, the price is expensive, resulting in a waste of resources

Method used

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  • Method of producing stalk composite fiber material for road

Examples

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Effect test

example 1

[0025] Example 1: Utilize corn stalks to make composite fiber materials, the steps are:

[0026] (1) Choose non-rotten corn stalks, remove the leaves, ears, and roots, wash and remove the surface dirt, and soak for one hour, then take out the stalks and cut them into about 100mm, and store them under the condition of maintaining their humidity spare.

[0027] (2) Use a fiber processing machine to process the stored straw into crude fiber.

[0028] (3) Soak the crude fiber in a NaOH solution with a concentration of 0.08mol / L to 0.15mol / L for 3 to 4 hours, then remove the soaked crude fiber to the cleaning tank, and inject CO into the cleaning tank 2 And measure the pH value of the cleaning tank to 6.4-7.6.

[0029] (4) Cook the crude fiber with adjusted pH value for 310 minutes, and the cooking ingredients are composed of corn stalk crude fiber, NaOH solution, NaOH solution, 2 S·9H 2 O, the weight ratio of water is 10:4:1:100, and utilize fiber machine to beat fine fiber sl...

example 2

[0036] Example 2: Utilize rice straw to make composite fiber material, the steps are:

[0037] (1) Choose non-rotten rice straw, remove the leaves, ears, and roots, wash and remove the surface dirt, and soak for one hour, then take out the straw and cut it into about 100mm, and store it under the condition of maintaining its humidity spare.

[0038] (2) Use a fiber processing machine to process the stored straw into crude fiber.

[0039] (3) Soak the crude fiber in a NaOH solution with a concentration of 0.12mol / L for 3 hours, then remove the soaked crude fiber to the cleaning tank, and inject CO into the cleaning tank. 2 And measure the pH value of the cleaning tank to 7.6.

[0040] (4) The crude fiber with adjusted pH value was steamed for 10 minutes, and the steamed ingredients consisted of rice straw crude fiber, NaOH solution, NaOH solution, and NaOH solution. 2 S·9H 2 O, the weight ratio of water 10: 4: 1: 200, and utilize fiber machine to make fine fiber pulp.

[0...

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Abstract

The invention relates to a method for preparing a road used composite straw fibrous material. The preparation method comprises the steps as follows: pulverizing; alkalizing and stewing plant straw to obtain fibrous pulp; mixing the fibrous pulp with bentonite and milling; conducting sodium treatment, chemical modification and purification to obtain modified composite bentonite pulp; separating, drying, etc., to prepare the composite fibrous material. The road used composite straw fibrous material prepared by adopting the method is adopted as an additive and applied in a bituminous mixture, so as to increase the capacity of a bituminous pavement to bear heavy load, prolong endurance life and service life of the pavement. The preparation method adopts the straw and the bentonite as the raw materials, has the characteristics of wide material source, simple process, high utilization rate of resources, low cost, no pollution, etc, eliminates the shortcomings that the existing fibrous material adopts the used newspapers as the raw materials and the printing ink on the newspapers is difficult to be removed completely, solves the problem of unstable properties of mixed materials, and adopts wood as the raw material, thereby increasing the expense of raw materials and reducing production cost.

Description

technical field [0001] The invention relates to a preparation method of straw composite fiber material for road use, in particular to a method for extracting straw fibers into classified resources. Background technique [0002] With the sustained and rapid development of the national economy, modern road traffic develops towards high speed, heavy load, large traffic volume and traffic channelization, which puts forward higher requirements on the performance of asphalt concrete pavement commonly used in expressways, from The structure, materials, and technology start to solve the early damage problem of the pavement, form the construction technology of my country's heavy traffic asphalt pavement, ensure the use function of the pavement within the service life, reduce the whole life cost of the road, and strive to reach the service life of the pavement for 10-20 years. [0003] The damage of the pavement structure is a direct reflection of the mechanical behavior of the pavemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00D21H17/68D21H17/69D21H21/14
Inventor 薛强李先旺赵颖刘磊胡竹云
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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