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Natural vegetable fiber reinforced fully-degradable polymer composite material and preparation method thereof

A technology of natural plant fibers and composite materials, applied in the field of polymer composite materials and their preparation, can solve problems such as environmental threats, and achieve the effect of wide application range and simple process

Inactive Publication Date: 2003-06-11
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, in the face of a series of problems such as the decrease of non-renewable resources such as petroleum, energy crisis and environmental coordination, the use of natural plant fibers instead of synthetic fibers as reinforcing materials in composite materials has attracted more and more attention (A.K.Bledzki, J.Gassen, in: Handbook of Engineering Polymeric Materials, edited by N.P.Cheremisinoss, Marcel Dekker, New York, 1997, p.787-810), but because the general resin as the matrix is ​​difficult to degrade naturally, the general plant fiber reinforced resin base Composite materials actually fail to achieve the purpose of natural complete degradation and still pose a threat to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0012] The composition and properties of the composite materials are shown in Table 1. The untreated Indian plant fiber Hildegardia populifolia and polymethylethylene carbonate were melt-blended at 180°C, with a mixing speed of 35-180rrpm, and a mixing time of 5 minutes, to prepare a degradable composite material , the obtained composite material was pressed with a flat vulcanizer, and the mechanical properties were tested according to the standard sample preparation of ISO 527-2. It can be seen from Table 1 that the strength and modulus of the short fiber reinforced material are greatly improved compared with the matrix material.

Embodiment 3-4

[0014] The composition and properties of the composite materials are shown in Table 1. The untreated Indian plant fiber Hildegardia populifolia and polymethylethylene carbonate are added the silane coupling agent of fiber consumption 0.1% by weight, in the melting mixing equipment, at 180 ℃, mixing rotation speed 35-180rrpm, mixing The refining time was 5 minutes, and the degradable composite material was prepared by melt blending. The obtained composite material was pressed into tablets with a flat vulcanizer, and the mechanical properties were tested according to the standard sample preparation of ISO 527-2. It can be seen from Table 1 that the short fiber reinforced material The strength and modulus are greatly improved compared with the base material.

Embodiment 5-9

[0016] The Indian plant fiber Hildegardia populifolia and polymethylethylene carbonate treated with 2% NaOH solution are melted and blended at 180° C., with a mixing speed of 35-180rrpm and a mixing time of 5 minutes, to prepare The composite material was degraded, and the obtained composite material was pressed into tablets with a flat vulcanizer, and the mechanical properties were tested according to the standard sample preparation of ISO 527-2. The composition and properties of the composite material are shown in Table 2. It can be seen from Table 2 that the strength and modulus of the short fiber reinforced material are greatly improved compared with the matrix material.

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Abstract

The invention refers to a full-degradable polymer composite material strengthened by the natural plant fiber and the preparing method. It adopts India plant fiber-Hildegardia populifolia, sisal fiber, ramee, wood fibre and so on as the fiber raw material, tand the degradable plastic-the poly-methyl ethyl carbonic acid resin as the basic body, and smelts and commixes the filling and the basic body on the existent / nonexistent condition of the coupling agent to make the composite material. The weight percent content of the fiber is 5-80%, the better fiber 10-40%.

Description

technical field [0001] The invention relates to a fully degradable polymer composite material reinforced by natural plant fibers and a preparation method thereof. Background technique [0002] Synthetic fiber-reinforced resin-based composites have been widely used in many fields due to their unique properties such as light weight and high strength. In recent years, in the face of a series of problems such as the decrease of non-renewable resources such as petroleum, energy crisis and environmental coordination, the use of natural plant fibers instead of synthetic fibers as reinforcing materials in composite materials has attracted more and more attention (A.K.Bledzki, J. Gassen, in: Handbook of Engineering Polymeric Materials, edited by N.P.Cheremisinoss, Marcel Dekker, New York, 1997, p.787-810), but because the general resin as the matrix is ​​difficult to degrade naturally, the general plant fiber reinforced resin base Composite materials actu...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L97/02
Inventor 孟跃中李秀华诸泉王拴紧肖敏
Owner SUN YAT SEN UNIV
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