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Self-reinforced polymer composite and preparation method thereof

A technology of composite materials and polymers, which is applied in the fields of physical treatment, textile and papermaking, radioactive element fiber treatment, etc., can solve the problems of strict preparation process requirements, and achieve the effect of simple preparation method and realization of structure and performance

Inactive Publication Date: 2016-04-27
JILIN UNIV
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a self-reinforced polymer composite material and its preparation method in order to solve the technical problem of strict requirements on the preparation process of the existing self-reinforced polymer composite material

Method used

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  • Self-reinforced polymer composite and preparation method thereof

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preparation example Construction

[0017] The present invention at first provides a kind of preparation method of self-reinforced polymer composite material, and this method comprises:

[0018] Step 1: put polyethylene fiber (ethylene fiber) into Co-60 source or electron beam, under vacuum or nitrogen atmosphere, carry out irradiation crosslinking to polyethylene fiber, obtain the polyethylene after crosslinking;

[0019] Step 2: Mixing the cross-linked polyethylene obtained in Step 1 with polyethylene to obtain a self-reinforced polymer composite material.

[0020] According to the present invention, there is no special limitation on the polyethylene fibers, commercially available products can be used, preferably polyethylene chopped fibers or polyethylene continuous fibers, and the irradiation dose is preferably 30-300 kGy, more preferably 50 ~250kGy.

[0021] According to the present invention, the polyethylene fiber to polyethylene mass ratio is preferably (10-100): 100, more preferably 50: 100; the polyet...

Embodiment 1

[0025] Weigh 10g of chopped polyethylene fiber, put it into a Co-60 source, and irradiate in a vacuum atmosphere with a radiation dose of 50kGy, then add the irradiated polyethylene fiber and 100g of polyethylene pellets to the banburying In the machine, melt blending was carried out at 140°C to obtain self-reinforced polyethylene composites. The mechanical properties of the self-reinforced polyethylene composite material obtained in Example 1 are shown in Table 1.

Embodiment 2

[0027] Weigh 500g of continuous polyethylene fiber, put it into a Co-60 source, and irradiate it in a nitrogen environment with a radiation dose of 220kGy; put the irradiated polyethylene fiber and 500g of polyethylene pellets into the twin-screw extrusion The extruder feeding system was used for extrusion processing, and the temperature of the twin-screw extruder was set at 160°C to obtain self-reinforced polyethylene composites. The mechanical properties of the self-reinforced polyethylene composite material obtained in Example 2 are shown in Table 1.

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Abstract

The invention provides a self-reinforced polymer composite and a preparation method thereof and belongs to the technical field of composites. The technical problem that the existing self-reinforced polymer composite preparation process has strict requirements is solved. The method includes: firstly, putting polyethylene fibers into a Co-60 source or electron beam, and subjecting polyethylene fibers to irradiation crosslinking in an atmosphere of vacuum or nitrogen to obtain crosslinked polyethylene; secondly, mixing the crosslinked polyethylene with polyethylene to obtain the self-reinforced polymer composite. The preparation method is simple and not limited to the preparation process, reinforced fibers can keep the own aggregation structure and physical properties basically unchanged during hot processing due to the characteristics of insolubility and infusibility of the prepared three-dimensional body structure, and the composite finally obtained is macroscopic homogeneous and microscopic split without obvious interfaces.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a self-reinforced polymer composite material and a preparation method thereof. Background technique [0002] The use of fiber reinforcement modification is an important means to improve the mechanical properties of polymer materials and expand their application range. Common reinforcing fibers include carbon fiber, glass fiber, basalt fiber, polyester fiber, ultra-high molecular weight polyethylene fiber, aramid fiber, etc. Whether it is for organic fiber or inorganic fiber reinforced polymer composites, there is a problem that cannot be avoided - the interfacial compatibility between the polymer matrix and the reinforced fiber, which is also the main factor determining the quality of the modification effect. At present, the commonly used methods to improve the interfacial compatibility of reinforced fiber-matrix resin are fiber surface treatment and addi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08J5/06D06M10/00
CPCC08J5/046C08J5/06C08J2323/06C08J2423/06C08L23/06C08L2201/08C08L2205/025C08L2205/16C08L2312/06D06M10/00D06M10/008
Inventor 张万喜尹园
Owner JILIN UNIV
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