Thermoplastic plant fiber and its preparation method

A technology of plant fiber and plant fiber powder, which is applied in the field of composition containing plant fiber material, thermoplastic plant fiber and its preparation, can solve the problems of waste of resources, environmental pollution, etc., and achieve good processing performance, excellent thermoplastic processing characteristics and The effect of mechanical properties

Inactive Publication Date: 2012-02-01
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This treatment method not only wastes resources,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1: Take 20 parts of alkalized plant fiber by weight, put 50 parts of acrylic acid in the reactor, feed N at the same time, stir and react at 40°C for 6 hours, add 10% acetic acid solution to neutralize the material after it is slurry pH 7.0, the reaction solution is removed by centrifugation, and the obtained solid is washed to neutral and then vacuum-dried to obtain thermoplastic plant fibers, which can also be granulated by extrusion or hot-pressed.

Embodiment 2

[0013] Embodiment 2: Take 40 parts of alkalized plant fiber by weight, 1 part of potassium persulfate, and 80 parts of styrene in the reactor, feed N at the same time, stir and react for 20 hours at 30 ° C, and add 10 parts after the material is slurry. % acetic acid solution to neutralize to pH 7.0, the reaction solution is removed by centrifugation, the obtained solid is washed to neutral and then vacuum-dried to obtain thermoplastic plant fibers, which can also be granulated by extrusion or hot-pressed.

Embodiment 3

[0014] Example 3: Take 60 parts of alkalized plant fiber, 3 parts of sodium persulfate, and 100 parts of acrylamide grafting monomer in the reaction kettle by weight, and feed N2 at the same time, stir and react at 20 ° C for 15 hours, until the material is slurry Add 10% acetic acid solution to neutralize to pH 7.0, remove the solution by centrifugation, wash the solid with water to neutral, and then vacuum dry to obtain thermoplastic plant fiber, which can also be granulated by extrusion or hot-pressed .

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PUM

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Abstract

The invention discloses a thermoplastic plant fiber and a preparation method thereof. Its components by weight are: 20-100 alkalized plant fibers, 0-3 initiators, and 50-300 graft monomers. Its preparation is as follows: pulverize and expand the plant fiber raw material after removing impurities, add 1% H2SO4 solution twice its weight, treat at 120°C for 1 hour, filter, wash, dry, and crush through a 40-mesh sieve to obtain Pure plant fiber powder; add 3 times of 18% NaOH solution to the pure plant fiber powder, soak at 30°C for 2 hours, squeeze out the excess lye, and control the lye in the plant fiber to 50%, to obtain alkali plant fiber; take alkalized plant fiber, initiator and grafting monomer in the reaction kettle according to the weight ratio, and feed N2 at the same time, stir and react at 20-40°C for 2-20h, and add 10 h after the material is slurry % acetic acid solution to neutralize to pH 7.0; the reaction solution was centrifuged to remove the solution, and the obtained solid was washed with water until neutral and then vacuum-dried to obtain the product.

Description

(1) Technical field [0001] The invention relates to a thermoplastic plant fiber and a preparation method thereof, belongs to a composition containing plant fiber materials, and belongs to the technical field of modification of natural plant fibers and development of new products. (2) Background technology [0002] According to statistics, there are more than 4 billion tons of plant fiber straw production in the world every year. According to the statistics of the Food and Agriculture Organization of the United Nations, 66% of the crop straw fiber in the world is directly returned to the field or burned as a living energy, 19% is used as building materials or covering materials for vegetable production, 12% is used as feed for grass-fed livestock, and another 3% % or so as raw materials for the handicraft industry. There are not many straw fiber resource utilization technology projects that have truly formed an industrial scale production. In my country, about 70% of straw ...

Claims

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Application Information

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IPC IPC(8): D06M14/04
Inventor 罗学刚徐东
Owner SOUTHWEAT UNIV OF SCI & TECH
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