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Flocculent fiber film felt and preparation method thereof

A flocculent and film technology, applied in the field of blended flocculent film felt and its preparation

Inactive Publication Date: 2012-08-01
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a blended fiber film felt and its preparation method. Through the combination of different polymer materials, the properties of the film felt can be combined arbitrarily according to the needs, and the performance defects of the single material film felt can be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A preparation method of polycaprolactone flocculation film mat, comprising the following steps:

[0059] (1) Putting an appropriate amount of polycaprolactone raw material into tetrahydrofuran to make a polycaprolactone solution with a concentration of 3% (W / W)%; the coagulation solution is 23°C deionized water;

[0060] (2) Spray the polycaprolactone solution to the coagulation liquid under stirring at a rotating speed of 100rpm to coagulate it into a polycaprolactone floc suspension;

[0061] (3) Filtrate the polycaprolactone flocculation suspension, and wash it with deionized water to obtain polycaprolactone flocculation;

[0062](4) Dispersing the polycaprolactone floc in deionized water to form a suspension of polycaprolactone floc, the concentration of which is 0.1 (W / W)%;

[0063] (5) pick up the flocculated fibers in the polycaprolactone flocculated fiber suspension liquid with a filter screen to obtain one deck of wet polycaprolactone flocculated fiber film fe...

Embodiment 2

[0066] A preparation method of polycaprolactone flocculation film mat, comprising the following steps:

[0067] (1) putting an appropriate amount of polycaprolactone raw material into tetrahydrofuran to make a polycaprolactone solution with a concentration of 30% (W / W); the coagulation solution is 27°C deionized water;

[0068] (2) Spray the polycaprolactone solution to the coagulation liquid under stirring at a rotating speed of 1000rpm, so that it is coagulated into a polycaprolactone floc suspension;

[0069] (3) Filtrate the polycaprolactone flocculation suspension, and wash it with deionized water to obtain polycaprolactone flocculation;

[0070] (4) Dispersing the polycaprolactone floc in deionized water to form a suspension of polycaprolactone floc, the concentration of which is 5 (W / W)%;

[0071] (5) pick up the flocculated fibers in the polycaprolactone flocculated fiber suspension liquid with a filter screen to obtain one deck of wet polycaprolactone flocculated fib...

Embodiment 3

[0074] A preparation method of polycaprolactone flocculation film mat, comprising the following steps:

[0075] (1) putting an appropriate amount of polycaprolactone raw materials into tetrahydrofuran to make a polycaprolactone solution with a concentration of 15% (W / W)%; the coagulation solution is 25°C deionized water;

[0076] (2) Spray the polycaprolactone solution to the coagulation liquid under stirring at a rotating speed of 500rpm to coagulate it into a polycaprolactone floc suspension;

[0077] (3) Filtrate the polycaprolactone flocculation suspension, and wash it with deionized water to obtain polycaprolactone flocculation;

[0078] (4) Dispersing the polycaprolactone floc in deionized water to form a suspension of polycaprolactone floc, the concentration of which is 1 (W / W)%;

[0079] (5) pick up the flocculated fibers in the polycaprolactone flocculated fiber suspension liquid with a filter screen to obtain one deck of wet polycaprolactone flocculated fiber film f...

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Abstract

The invention relates to flocculent fiber film felt and a preparation method thereof, wherein the film felt is a film structure formed by stacking one kind of or a plurality kinds of macromolecule flocculent fibers. The preparation method includes adding an appropriate amount of macromolecule materials into corresponding solvents to prepare a solution, and preparing a coagulating liquid of a corresponding macromolecule solution; spraying the corresponding macromolecule solution to the coagulating liquid with high speed stirring to coagulate the coagulating liquid into flocculent fiber suspension; dispersing flocculent fibers in deionized water to form a flocculent fiber suspension clear liquid after filtering and washing the flocculent fibers; repeating the steps to prepare two kinds of or more than two kinds of macromolecule flocculent fiver suspension clear liquids; taking the flocculent fibers with a filtering screen after fully mixing the obtained two kinds of or more than two kinds of the macromolecule flocculent fiver suspension clear liquids to obtain a layer of the flocculent fiber film felt; and naturally drying the taken film felt, and the blending flocculent fiber film felt is obtained. The film felt has certain porosity, a good water-absorbing performance, and can be used for accessories for wound surface.

Description

technical field [0001] The invention relates to a wadding fiber film felt and a preparation method thereof, in particular to a blended wadding fiber film felt and a preparation method thereof. Background technique [0002] Chitosan is the product of N-deacetylation of chitin, and its chemical name is β-(1→4)-2-amino-2-deoxy-D-glucose. Pure chitosan is a white translucent, tasteless, odorless, non-toxic, powdery solid with a slight pearl luster, which can undergo hydrolysis, alkylation, acylation, carboxymethylation, sulfonation, and nitration under certain conditions , Halogenation, oxidation, reduction, condensation and complexation and other chemical reactions can generate chitosan derivatives with different properties, which expands the application range of chitosan. [0003] Chitosan has good physiological activity, can inhibit bacterial activity, activate body system, absorb and excrete heavy metals, maintain immune effect and solubility, etc. Chitosan also has other ...

Claims

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Application Information

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IPC IPC(8): D21J1/00
Inventor 杨庆吉亚丽郯志清沈新元赵婧李超陈如瑶
Owner DONGHUA UNIV