Fibrous composite material and preparation method thereof

A fiber composite material and composite material technology, which are applied in the field of composite materials and their preparation, can solve the problems of poor bonding between bacterial cellulose membrane and fiber membrane, cannot withstand compression, and are easy to detach and separate, so as to achieve easy industrial production, Low cost, strong bonding effect

Active Publication Date: 2016-08-17
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this composite method still does not deviate from the traditional planar composite, and cannot withstand a certain compression, and the combination of the bacterial cellulose membrane and the fiber membrane is poor, and it is easy to separate.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Fibrous composite material and preparation method thereof
  • Fibrous composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of bacterial cellulose: Acetobacter xylinum, a microorganism of the genus Acetobacter, which can secrete bacterial cellulose, is activated to prepare seed wake-up liquid, and then the seed wake-up liquid is added to the sterilized fermentation medium, and heated at 30°C Cultivate in the incubator for 7 days to make the bacteria multiply and grow to a certain concentration.

[0030] (2) Combination of fabric and bacterial cellulose: In this example, polyester warp-knitted spacer fabric with a thickness of 3 mm is used, and the upper and lower surfaces of the fabric are mesh structures. Cut the fabric into a circle with a diameter of about 7cm, and place it in a petri dish. Then the culture solution of the above-mentioned bacterial cellulose is poured into the petri dish, and the height of the liquid level is controlled below 3 mm. Then seal it with a parafilm, and culture it in an incubator at 30° C. for 4 days. Bacterial cellulose grows disorderly in t...

Embodiment 2

[0033] (1) Preparation of bacterial cellulose: Acetobacter xylinum, a microorganism of the genus Acetobacter, which can secrete bacterial cellulose, is activated to prepare seed wake-up liquid, and then the seed wake-up liquid is added to the sterilized fermentation medium, and the biological fermentation tank is used to A large amount of production is carried out to make the bacteria multiply and grow to a certain concentration.

[0034] (2) In-situ compounding of fabric and bacterial cellulose: In this example, polyester warp-knitted spacer fabric with a thickness of 6 mm is used, and the upper and lower surfaces of the fabric are of mesh structure. Pour the bacterial cellulose culture solution into it, control the liquid level below 6mm, and cultivate it in an incubator at 37°C for 7 days. Bacterial cellulose grows disorderly in the voids of the warp-knitted spacer fabric, forming an in-situ nanocomposite. Bacterial cellulose grows in the middle layer of the fabric, that i...

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Abstract

The invention discloses a fibrous composite material and a preparation method thereof. The fibrous composite material is a three-dimensional multi-layer fabric which comprises an upper surface layer and a lower surface layer, wherein a middle layer formed by the connection of middle separating yarns is arranged between the upper surface layer and the lower surface layer and is filled with nanofiber. The preparation method comprises the step of filling the middle layer of the three-dimensional multi-layer fabric with nanofiber by virtue of an electrostatic spinning method or a biological method, so as to form the fibrous composite material. The fibrous composite material has strong force, is capable of resisting external tensile force and bearing a certain compression performance and has very good elastic return action, the structure is relatively strong, and the bonding is relatively firm. Furthermore, the nano-level fibrous composite material has relatively high porosity and high in filter efficiency. The preparation method is low in cost and and suitable for industrial production. The fibrous composite material can be further taken as a filling material and has a protection enhancing effect.

Description

technical field [0001] The invention relates to the technical field of composite materials and preparation thereof, in particular to a fiber composite material and a preparation method thereof. Background technique [0002] Composite materials are two or more materials with different properties, which are composed of materials with new properties on a macro or micro level through physical or chemical methods. A variety of materials produce synergistic effects, so that the comprehensive performance of composite materials is better than that of the original constituent materials to meet various requirements, so the research on composite materials has attracted great attention. Fiber composites are an important part of composite materials. [0003] According to different uses, fiber composite materials can be used for the separation and purification of gas, liquid and dust, etc., and can also be used as packaging materials and support materials. CN103481600A discloses a prepa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): B32B27/02B32B27/12B32B33/00B32B38/18
CPCB32B5/02B32B5/26B32B33/00B32B38/18B32B2262/02B32B2262/062B32B2262/14B32B2307/54B32B2307/558B32B2307/734
Inventor 徐阳张蒙魏取福李国辉
Owner JIANGNAN UNIV
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