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Resin composite material and its preparation method and use

A resin composite material and thermoplastic resin technology, applied in the field of preparation and resin composite material, can solve the problems of limited reinforcement effect, small fiber length and diameter of natural fiber reinforced material, screw wear, etc., and achieve the effect of less defects and high mechanical strength

Active Publication Date: 2013-03-06
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The natural fiber reinforced material prepared by this method has a relatively small fiber length and diameter, and its reinforcing effect is limited; moreover, it has great wear and tear on the screw of the extruder

Method used

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  • Resin composite material and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Get 87 parts of polylactic acid resin, 2 parts of tetrakis{β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate} pentaerythritol ester, 5 parts of polycaprolactone, 2 parts of bis(2,2, 6,6-Tetramethyl-4-piperidinyl) sebacate, 2 parts polyethylene glycol, 2 parts decabromodiphenylethane were mixed in a medium speed mixer for 4 minutes, mixed and added to the twin screw In the extruder, extrude and granulate, the screw speed is 75r / min, and the extruder head temperature is 190°C.

[0060] figure 1 It is a flow chart for the preparation of prepreg tapes of natural fiber / resin composites. The natural fiber used in this article refers to the long fiber length, which can be in a continuous state after twisting. The nominal count of a bundle of twisted fibers is 0.2-1; the cellulose content of natural fibers is ≥ 60%; the natural fibers are twisted After that, untwisting is carried out to form a loose and expanded form. Get 100 rolls of jute fiber thread through alkali treatmen...

Embodiment 2

[0062] Take 72 parts of homopolypropylene resin, 3 parts of dilauryl thiodipropionate, 10 parts of polycaprolactone, 3 parts of bis(2,2,6,6-tetramethyl-4-piperidinyl)decane Diacid ester, 3 parts low molecular weight polyethylene, 5 parts tetrabromobisphenol A bis(2,3-dibromopropyl) ether, 1 part 3-mercaptopropionate isooctyl, mix in a medium speed mixer for 4 Minutes, mixed and added to a twin-screw extruder, extruded and granulated, the screw speed was 75r / min, and the extruder head temperature was 190°C.

[0063] The natural fibers used in this example refer to those with longer fiber lengths, which can be in a continuous state after being twisted. The nominal count of a bundle of twisted fibers is 0.2 to 1; the cellulose content of natural fibers is ≥ 60%; the natural fibers After twisting, untwisting is performed to form a loose and expanded form. 100 volumes of alkali-treated jute fiber threads are pulled to the cord fabric loom, and the warp is polypropylene fiber, whic...

Embodiment 3

[0065] Take 95 parts of homopolypropylene resin, 3 parts of tetrabromobisphenol A bis(2,3-dibromopropyl) ether, and 2 parts of low molecular weight polyethylene. Mix in a medium-speed mixer for 4 minutes, add to a twin-screw extruder after mixing, extrude and granulate, the screw speed is 75r / min, and the extruder head temperature is 190°C.

[0066] The natural fibers used in this example refer to those with longer fiber lengths, which can be in a continuous state after being twisted. The nominal count of a bundle of twisted fibers is 0.2 to 1; the cellulose content of natural fibers is ≥ 60%; the natural fibers After twisting, untwisting is performed to form a loose and expanded form. 100 volumes of alkali-treated jute fiber threads are pulled to the cord fabric loom, and the warp is polypropylene fiber, which is woven into a cord fabric with a width of 1m; the tension is unfolded by the tension control device, and the natural fiber is pressed and rolled The roller is compac...

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Abstract

The invention belongs to the technical field of polymers and discloses a resin composite material and its preparation method and use. The resin composite material comprises: by weight, 70 to 100 parts of one or more thermoplastic resins, 0 to 5 parts of one or more anti-oxidants, 0 to 5 parts of one or more fire retardants, 0 to 10 parts of one or more compatibilizers, 0 to 3 parts of one or more weather-resistant agents, 0 to 5 parts of one or more release agents and 0 to 2 parts of one or more assistants. The preparation method of the resin composite material comprises the following steps of fully mixing the raw materials in an intermediate-speed mixer according to the ratio for 3 to 7min, adding the mixture into an extruder, and carrying out extrusion cutting to obtain the resin composite material. A method for preparing a natural fiber / resin composite material prepreg tape from the resin composite material comprises the following steps of preparing natural fibers into a cord fabric, carrying out drawing, compaction and heating drying dehydration, carrying out pre-dipping of the resin composite material at a laminating extruder, carrying out gum dipping, carrying out cooling and carrying out wrapping-up. The prepreg tape obtained by the method has low porosity and high mechanical strength.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a resin composite material, a preparation method and an application thereof. Background technique [0002] Continuous fiber reinforced thermoplastic resin composite prepreg tape has excellent mechanical properties, such as high tensile strength, flexural strength / modulus, high and low temperature impact strength, etc., and has the characteristics of relatively low density and recyclability, so In recent years, it has developed rapidly, and the corresponding preparation technology has also made major breakthroughs. In Chinese patent CN200610070280, Fang Kun uses the mixed yarn method to prepare continuous glass fiber reinforced polypropylene PP pellets, mixes the composite mixed yarn containing glass fiber with PP resin and processing aids, heats, melts and blends, and passes through the extruder Extrusion granulation. The product produced by this method can fully adjust...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L23/06C08L67/02C08L67/04C08L77/02C08L77/06C08L27/06C08L69/00C08K5/134C08K5/3435C08K5/03C08K5/372C08K5/136C08K5/37C08J5/04
Inventor 刘密密解廷秀
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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