Plant fibre-polypropylene composite material and preparation thereof

A composite material and plant fiber technology, which is applied in the field of polymer material processing, can solve problems such as process and formula differences, and achieve the effect of reducing raw material costs, production costs, and meeting a wide range of needs.

Inactive Publication Date: 2005-05-11
倪斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the present invention has similarities with it, its method is still to use thermocompression molding technique, and its used plastics are mostly polyethylene or polyolefin compound, therefore have bigger difference with technique and prescription of the present invention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Cotton rod fiber: 65

[0021] Polypropylene: 25

[0022] Talc: 3

[0023] EPDM: 3

[0024] Grafted maleic anhydride: 4.6

[0025] Antioxidant 1010: 0.4

Embodiment 2

[0029] Straw fiber: 70

[0030] Polypropylene: 22

[0031] Calcium Carbonate Powder: 3

[0032] HDPE: 5

[0033] Grafted maleic anhydride: 2.8

[0034] Antioxidant 1010: 0.2

[0035] The preparation method of the plant fiber polypropylene composite material of the above-mentioned embodiment 2 is to place the prepared raw materials of each component in a high-speed mixer in a solid state and fully mix them uniformly before adding them to the barrel of a twin-screw extruder. Melt blending is carried out under the temperature control of ~200 ℃, and then extruded through the die mouth, cooled by water to shape, and then pulled and cut to length to produce finished products.

[0036] Test items

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PUM

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Abstract

The invention provides a plant fiber polypropylene composite material and a preparation method thereof. The raw material components (by weight) include 50-80 parts of plant fiber, 18-50 parts of polypropylene, 1-10 parts of inorganic filler, and 1 part of grafted maleic anhydride. ~10, antioxidant 1010: 0.1~2, other additives 3~10. The preparation method is to place the prepared raw materials of each component in a high-speed mixer in a solid state and mix them evenly, then add them to the barrel of a twin-screw extruder, melt and blend them at a temperature of 175-200°C, and then pass Extruded from the die mouth, water-cooled and shaped, then pulled and cut to length, the finished product can be produced. The present invention greatly increases the proportion of plant fibers, greatly reduces the raw material cost of the composite material, further reduces the production cost because no granulation process is required, and can meet the requirements of materials for different purposes by adjusting the ratio of plant fibers and polypropylene .

Description

technical field [0001] The invention relates to a polymer composite material, in particular to a composite material made of plant straw fiber and polypropylene as main raw materials, and a one-step extrusion molding method adopted (that is, after mixing polypropylene and straw fiber powder, etc. directly carry out molding processing) and a preparation process method, belonging to the field of polymer material processing. Background technique [0002] Generally, polyethylene (PE) and wood fibers with lower melting points are mostly used in the manufacture of wood-plastic composite materials. The disadvantage is that the produced polyethylene-based wood-plastic composite materials have insufficient strength and low thermal deformation temperature. The production of high-strength polypropylene wood-plastic composite materials has been produced abroad, but its special formula and processing technology are not the same and are still in the confidential stage. There is no public f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/40B29C70/06C08J5/06C08K5/09C08L23/12
Inventor 倪斌
Owner 倪斌
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