Preparation method of novel multifunctional silk filtering material

A filter material and multifunctional technology, which is applied in the field of preparation of new multifunctional silk filter materials, can solve the problems of poor filter material functionality and functional dependence on silk, etc., to achieve improved cohesion, high adsorption and air permeability, The effect of improving functionality and durability

Inactive Publication Date: 2015-05-13

重庆绿草缘皮革制品有限公司

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AI-Extracted Technical Summary

Problems solved by technology

At present, most of the fiber filter materials prepared by using silk fiber as raw material are directly processed by silk fiber to prepare ...

Abstract

The invention discloses a preparation method of a novel multifunctional silk filtering material. The method comprises the following steps: after silk is degummed, dipping the silk into a mixed solution of titanium dioxide sol and silk protein, soaking the silk in a gel promoter, taking out the silk, heating for curing the silk, and carrying out spun-laced drying on the silk, so that the novel multifunctional silk filtering material is obtained. The preparation method is simple, and combines a gel technology with a spun-laced nonwoven technology, and therefore, the method is suitable for mass production. The novel multifunctional silk filtering material prepared by using the method has high adsorbability and air permeability, and is antibacterial, bacteriostatic and durable.

Application Domain

Filtration separationAnimal fibres

Technology Topic

ChemistryFilter material +2

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Examples

Experimental program(6)

Example Embodiment

[0025] Example 1:

[0026] After removing impurities from waste silk less than 6 cm, degumming with 0.08 g/L sodium carbonate solution, washing and drying to obtain degummed silk bundles.

[0027] The degummed silk bundle is immersed in a mixed solution of titanium dioxide sol and silk protein at a bath ratio of 1:40 for 30 minutes, wherein the mass fraction of silk protein is 15% and the mass fraction of titanium dioxide sol is 8%. Then the silk bundle is taken out and immersed in a gel accelerator of carboxylic acid and polyethylene glycol with a molar ratio of 1:5. The amount of the gel accelerator is 1/50 of the volume of the mixed solution of titanium dioxide sol and silk protein. After the silk protein is gelled, it is taken out to obtain a gel-treated silk bundle.

[0028] After removing excess gel from the surface of the gel-treated silk bundle, it is pressurized with a heating roller, heated and cured at 30°C, after spunlace treatment with a density of 16 filaments/cm and a pore diameter of 0.15mm, and dried at 70°C to obtain the thickness It is a new multifunctional silk filter material with 1cm and 25% porosity.

Example Embodiment

[0029] Example 2:

[0030] After removing impurities from waste silk less than 6 cm, degumming with 0.08 g/L sodium carbonate solution, washing and drying to obtain degummed silk bundles.

[0031] The degummed silk is immersed in a mixed solution of titanium dioxide sol and silk protein at a bath ratio of 1:40 for 60 minutes, wherein the mass fraction of silk protein is 10% and the mass fraction of titanium dioxide sol is 5%. Then take out the silk tow and soak it in a gel accelerator of carboxylic acid and polyethylene glycol with a molar ratio of 1:5. The amount of the gel accelerator is 1/50 of the volume of the mixed solution. After the silk protein gels Take it out to obtain a gel-treated silk bundle.

[0032] After removing the excess gel from the surface of the gel-treated silk, it is pressurized with a heating roller and heated and cured at 50°C. After spunlace treatment with a density of 16 filaments/cm and a pore diameter of 0.15mm, it is dried at 80°C to obtain a thickness of 3cm, a new type of multifunctional silk filter material with a porosity of 33%.

Example Embodiment

[0033] Example 3:

[0034] After removing impurities from waste silk less than 6 cm, degumming with 0.08 g/L sodium carbonate solution, washing and drying to obtain degummed silk bundles.

[0035] The degummed silk is immersed in a mixed solution of titanium dioxide sol and silk protein at a bath ratio of 1:40 for 40 minutes, wherein the mass fraction of silk protein is 12% and the mass fraction of titanium dioxide sol is 6%. Then take out the silk tow and soak it in a gel accelerator of carboxylic acid and polyethylene glycol with a molar ratio of 1:5. The amount of the gel accelerator is 1/50 of the volume of the mixed solution. After the silk protein gels Take it out to obtain gel-treated silk.

[0036] After removing the excess gel from the surface of the gel-treated silk bundle, it is pressurized with a heating roller, heated and cured at 40°C, after spunlace treatment with a density of 16 filaments/cm and a pore diameter of 0.15mm, and dried at 75°C to obtain the thickness A new multifunctional silk filter material with a diameter of 2 cm and a porosity of 30%.

PUM

Property	Measurement	Unit
Thickness	1.0 ~ 3.0	cm
Porosity	0.25
Porosity	0.33

Description & Claims & Application Information

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Preparation method of novel multifunctional silk filtering material

AI-Extracted Technical Summary

Problems solved by technology

Abstract

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Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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