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Preparation method of flax fiber and rice hull powder wood-plastic PP composite material

A flax fiber and composite material technology, which is applied in the field of wood-plastic PP composite materials, can solve the problems of uneven dispersion and high internal stress of parts, and achieve the effects of uniform fiber dispersion, improved dispersion, good rigidity and toughness

Inactive Publication Date: 2018-03-06
HEILONGJIANG XINDA ENTERPRISE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention adds liquid paraffin to improve the dispersibility of flax fiber and rice husk powder, so that the performance of the prepared composite material is uniform and stable, thereby solving the cause of excessive internal stress in the workpiece due to uneven dispersion in the composite material, and is better Satisfied with the use of materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Weigh 80 parts of polypropylene and 5 parts of liquid paraffin, add to high mixer, and mix for 2 minutes;

[0026] (2) Flax fiber pretreatment, drying at 80 degrees Celsius for 4 hours. Weigh 20 parts of flax fiber and rice husk powder, add them into the high-mixer described in step (1), and mix at high speed for 3 minutes; continue to add 3 parts of compatibilizer and 2 parts of coupling agent, mix at high speed for 3 minutes, and take them out for later use;

[0027] (3) Put the material obtained in step (2) into a twin-screw extruder, and granulate under the technological conditions of 170-190°C, rotating speed 260-300, main feeding frequency 7-9, and side feeding frequency 0 to prepare this product. Invention of the described wood-plastic polypropylene.

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Abstract

The invention relates to a preparation method of a wood-plastic PP composite material. The PP is modified by a melt extrusion method by compounding flax fiber and rice husk powder to form a wood-plastic PP composite material. The raw materials of the material are calculated in parts by weight: 80 parts of polypropylene, 20 parts of flax fiber and rice husk powder, 0-12 parts of compatibilizer, 0-3 parts of coupling agent, and 3-6 parts of liquid paraffin. The production method is to use a twin-screw extruder to blend the materials, and the extruded material strips are cooled by cooling water, dried, pelletized and packaged. The present invention obtains a wood-plastic PP composite material by compounding flax fiber and rice husk powder to modify PP through a melt extrusion method.

Description

technical field [0001] The invention belongs to the field of PP biological plastics, and relates to modifying PP by compounding flax fiber and rice husk powder, so as to obtain a wood-plastic PP composite material. Background technique [0002] Flax fiber and rice husk powder compound modified polypropylene can not only improve the mechanical properties of polypropylene, but also reduce the cost. [0003] Natural hemp fiber can partially replace glass fiber and carbon fiber to reinforce and modify polypropylene. The difference is that glass fiber and carbon fiber are man-made, the preparation method is complicated, and will cause pollution to nature; while natural hemp fiber is a green, environmentally friendly natural resource and a sustainable resource. [0004] Flax fiber is extracted from plants with high fiber content through multiple steps, and has excellent effects such as high strength and multi-void sound insulation. If the polypropylene material is modified, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/10C08L97/02C08L51/06C08L91/06
CPCC08L23/10C08L2205/025C08L2205/035C08L2205/08C08L2205/16C08L97/02C08L51/06C08L91/06
Inventor 王贺崔成杰谢众
Owner HEILONGJIANG XINDA ENTERPRISE GRP
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