Regenerated cellulose fiber and preparation method thereof

A technology of regenerated cellulose and fiber, which is applied in the field of cellulose fiber, can solve the problems of small contact area between fiber and asphalt mixture, small specific surface area of ​​fiber, and influence on fiber utilization, and achieve clear processing route, large specific surface area, Effect of improving anti-aging properties

Inactive Publication Date: 2014-04-30
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The above two patents have a common defect, that is, the structure of the fiber body has not changed. The crystallization degree of the cellulose body is relatively high, which affects its activity. The specific surface area of ​​the fiber is small, which leads to the contact between the fiber and the asphalt mixture. The area is small, which affects the utilization rate of the fiber; in addition, the mechanical properties and anti-aging properties of the fiber of this invention still need to be further improved
[0007] Existing technology three (Chinese patent application CN 1923904A) discloses a composite modified fiber and its production method. The uniformly dispersed fiber enhances the hardness and wear resistance of asphalt concrete. It is processed from log raw materials through multiple processes. Formed, the process is complicated and the cost is high

Method used

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  • Regenerated cellulose fiber and preparation method thereof
  • Regenerated cellulose fiber and preparation method thereof
  • Regenerated cellulose fiber and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] 1. Waste paper disintegration: tear the kraft paper into 2×5cm pieces, soak in water for 24 hours, put the soaked paper into the PL12-00 high-consistency hydraulic pulper, control the pulp concentration to 8%, and the pulping temperature is 55°C ~60°C, the speed of the pulper is 350 r / min, and the disintegration time is 30 min. The disintegrated pulp was filtered through a 80-mesh sieve, vacuum filtered, and then dried in an electric blast drying oven at 105 °C for 24 h until constant weight and bagged for later use.

[0042] 2. Suspension preparation: prepare 2% slurry and stir evenly to make the fibers in a suspended state.

[0043] 3. Ultrasonic treatment: use an ultrasonic cell pulverizer as an ultrasonic generator, ultrasonic power 300w, ultrasonic time 10min, ultrasonic 5s, gap 5s, initial temperature 30°C, material volume 60ml.

[0044] 4. Composite solution preparation: Add disperse rosin gum, aluminum sulfate, superfine kaolin, and cetyl ammonium chloride t...

Embodiment 2

[0050] 1. Waste paper disintegration: Tear domestic waste and old newsprint into 2×5cm pieces, soak in water for 24 hours, put the soaked paper into PL12-00 high-consistency hydraulic pulper, control the pulp concentration to 10%, and the pulping temperature 55℃~60℃, the speed of the pulper is 350 r / min, and the crushing time is 30 minutes. The disintegrated pulp was filtered through a 80-mesh sieve, vacuum filtered, and then dried in an electric blast drying oven at 105 °C for 24 h until constant weight and bagged for later use.

[0051] 2. Fiber swelling: Prepare 1% sodium hydroxide solution, add waste paper fiber dry pulp to make a 5% suspension solution, stir evenly and soak for 2 hours to make the fiber swell and show a downward state.

[0052] 3. Suspension preparation: Add deionized water to the fiber suspension to a concentration of 1%, and stir evenly to make the fibers in a suspended state.

[0053] 4. Ultrasonic treatment: Ultrasonic cell pulverizer is used ...

Embodiment 3

[0060] 1. Waste paper disintegration: Tear domestic waste and old newsprint into 2×5cm pieces, soak in water for 24 hours, put the soaked paper into PL12-00 high-consistency hydraulic pulper, control the pulp concentration to 10%, and the pulping temperature 55℃~60℃, the speed of the pulper is 350 r / min, and the crushing time is 30 minutes. The disintegrated pulp was filtered through a 80-mesh sieve, vacuum filtered, and then dried in an electric blast drying oven at 105 °C for 24 h until constant weight and bagged for later use.

[0061] 2. Fiber swelling: Prepare 2% sodium hydroxide solution, add waste paper fiber dry pulp to make a 5% suspension solution, stir evenly and soak for 2 hours to make the fiber swell and show a downward state.

[0062] 3. Suspension preparation: Add deionized water to the fiber suspension to a concentration of 1%, and stir evenly to make the fibers in a suspended state.

[0063] 4. Ultrasonic treatment: use an ultrasonic cell pulverizer as a...

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Abstract

The invention discloses a regenerated cellulose fiber and a preparation method thereof. The regenerated cellulose fiber takes waste newspaper with ink, office paper, kraft paper or cardboard paper and the like as raw materials, after ultrasonic treatment, the raw materials are mixed with filler, a surfactant, a waterproof agent and special coating according to a certain proportion so as to prepare the regenerated cellulose fiber. The preparation method comprises the following steps of defibering the raw material waste paper by a high energy aquapulper and then screening to remove dregs, after ultrasonic treatment on the purified sizing agent, mixing with mixed filler uniformly, slowly stoving at above 60 DEG C so as to obtain oven dry stock, ball milling and dispersing the oven dry stock so as to obtain villiform monofilament fiber, adding nano TiO2 coating through a dry method in the process so as to obtain the regenerated cellulose fiber product.

Description

technical field [0001] The invention relates to a regenerated cellulose fiber and a manufacturing method thereof, belonging to the field of cellulose fibers. Background technique [0002] Cellulose is the largest renewable energy source in the world, and has natural water and oil absorption properties, and has gradually become a research hotspot at home and abroad. Cellulose fiber is a new type of special fiber for concrete durability developed after chemical synthetic fibers such as mineral fiber and polymer fiber. It is widely used in various concrete fields. [0003] SMA (Stone Matrix Asphalt), the full name of asphalt mastic macadam mixture, is a new type of concrete pavement structure widely popularized in the world. In order to ensure the stability of asphalt during mixing, storage, transportation, paving and rolling, and improve the durability of asphalt concrete pavement, fibers play a vital role in SMA, and cellulose fibers provide this The best material for fiber...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/24
CPCY02W30/91
Inventor 蒋正武郭秀艳袁政成
Owner TONGJI UNIV
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