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Preparation method of high-porosity polymer thin film felt and product prepared according to method

A high-molecular film and high-porosity technology, which is applied in textiles and papermaking, paper, physical treatment paper, etc., can solve the problems of low moisture absorption performance and low porosity of film paper, and achieve high liquid absorption rate, low cost and easy preparation The effect of simple method

Inactive Publication Date: 2014-12-03
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But on the other hand, this kind of film paper has a low porosity, so the moisture absorption performance is low, and it is not suitable for applications that require high adsorption performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing a high-porosity polymer film mat, comprising the following steps:

[0029] (1) Putting polycaprolactone in tetrahydrofuran to make a polymer solution with a concentration of 3% (W / W)%; the coagulation solution is deionized water at 25°C;

[0030](2) Spray the polymer solution to the coagulation liquid under stirring at a rotating speed of 100rpm. The spraying refers to: the polymer solution is packed into the feed barrel of the electric sprayer, and the electric air pump is opened to spray the polymer solution at a rate of 0.2l / The speed of min is sprayed into the coagulation liquid in the form of mist to coagulate it into a floc suspension; the floc suspension is composed of flocculent polymer short fibers and suspension liquid, and the flocculant polymer short in the suspension; the flocculent polymer staple fibers refer to small and loose aggregates of polymer staple fibers;

[0031] (3) To filter the fiber suspension, first insert the Buchne...

Embodiment 2

[0036] A method for preparing a high-porosity polymer film mat, comprising the following steps:

[0037] (1) putting polycaprolactone in tetrahydrofuran to make a polymer solution with a concentration of 30% (W / W)%; the coagulation solution is deionized water at 23°C;

[0038] (2) Spray the polymer solution to the coagulation liquid under stirring at a rotating speed of 1000rpm. The spraying refers to: the polymer solution is packed into the feed barrel of the electric sprayer, and the electric air pump is opened to spray the polymer solution at a rate of 0.3l / The speed of min is sprayed into the coagulation liquid in the form of mist to coagulate it into a floc suspension; the floc suspension is composed of flocculent polymer short fibers and suspension liquid, and the flocculant polymer short in the suspension; the flocculent polymer staple fibers refer to small and loose aggregates of polymer staple fibers;

[0039] (3) To filter the fiber suspension, first insert the Buc...

Embodiment 3

[0044] A method for preparing a high-porosity polymer film mat, comprising the following steps:

[0045] (1) Putting polycaprolactone in tetrahydrofuran to make a polymer solution with a concentration of 15% (W / W)%; the coagulation solution is deionized water at 27°C;

[0046] (2) Spray the polymer solution to the coagulation liquid under stirring at a rotating speed of 500rpm. The spraying refers to: the polymer solution is packed into the feed barrel of the electric sprayer, and the electric air pump is opened to spray the polymer solution at a rate of 0.24l / The speed of min is sprayed into the coagulation liquid in the form of mist to coagulate it into a floc suspension; the floc suspension is composed of flocculent polymer short fibers and suspension liquid, and the flocculant polymer short in the suspension; the flocculent polymer staple fibers refer to small and loose aggregates of polymer staple fibers;

[0047] (3) To filter the fiber suspension, first insert the Buc...

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Abstract

The invention relates to a preparation method of a high-porosity polymer thin film felt and a product prepared according to the method. The polymer thin film felt adopts a high-porosity film structure formed by stacking flocculent fiber. The preparation method comprises the steps as follows: (1) feeding a proper ratio of polymer raw materials to corresponding solvent to prepare a polymer solution, and preparing a solidifying liquid for a corresponding solution; (2) spraying the polymer solution to the solidifying liquid under high-speed stirring for solidifying to form flocculent fiber suspension; (3) filtering the flocculent fiber suspension, and cleaning with deionized water to obtain flocculent polymer short fiber namely flocculent fiber; (4) dispersing the flocculent fiber in deionized water to form flocculent fiber suspension clear liquid; and (5) fishing out the flocculent fiber from the flocculent fiber suspension clear liquid with a filter gauze to obtain a flocculent fiber thin film felt, and after draining surface moisture, and carrying out deep freezing and sublimation freezing to obtain the high-porosity polymer thin film felt. The thin film felt has better liquid absorption property, and is suitable to be used as a wound dressing; and the preparation method is simple, low in cost and environment friendly.

Description

technical field [0001] The invention relates to a method for preparing a high-porosity polymer film felt and its products. Background technique [0002] It is a common method to disperse the fibers evenly in the liquid, and then use the papermaking method to make a film felt. Wei Yuezhen et al [Wei Yuezhen et al., A kind of grass pulp and synthetic fiber mixed paper, 89106114.2] invented a method of mixing grass pulp and synthetic fiber to make a kind of mixed paper. The addition of synthetic fiber significantly improved the quality of grass pulp. The strength and toughness of the paper have improved the grade of the utilization value of the grass. Zhang Xingxian et al. [Zhang Xingxian et al., A process for producing asbestos yarn with asbestos staple fiber papermaking, 94110411.7] invented a process for producing asbestos yarn with asbestos staple fiber as raw material after papermaking. The short fiber is added with water and beaten to form paper pulp after purification ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H15/02D21H13/34D21H25/04
Inventor 杨庆郯志清沈新元吉亚丽吴文华
Owner DONGHUA UNIV
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