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A kind of barium sulfate/polyvinyl alcohol composite fiber and its preparation method, nonwoven fabric

A polyvinyl alcohol and composite fiber technology, which is applied in the manufacture of non-woven fabrics, single-component synthetic polymer rayon, rayon, etc., can solve the problems of poor mechanical properties and anti-ray radiation performance, and achieve smooth hand feeling and excellent craftsmanship. The effect of short process and low price

Active Publication Date: 2017-08-25
SHANGHAI QUANYU BIO TECH SUIPING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of barium sulfate / polyvinyl alcohol composite fiber, thus solve the technical problem that the anti-ray fiber of the prior art has poor mechanical properties and anti-ray radiation performance

Method used

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  • A kind of barium sulfate/polyvinyl alcohol composite fiber and its preparation method, nonwoven fabric
  • A kind of barium sulfate/polyvinyl alcohol composite fiber and its preparation method, nonwoven fabric
  • A kind of barium sulfate/polyvinyl alcohol composite fiber and its preparation method, nonwoven fabric

Examples

Experimental program
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Effect test

Embodiment 1

[0022] The barium sulfate / polyvinyl alcohol composite fiber of this embodiment is composed of the following components in mass percentage: 20% of barium sulfate and 80% of polyvinyl alcohol. The degree of polymerization of polyvinyl alcohol is 1750±50, the degree of alcoholysis ≥ 99%, and the particle size of barium sulfate is 6000 mesh.

[0023] The preparation method of the barium sulfate / polyvinyl alcohol composite fiber of the present embodiment may further comprise the steps:

[0024] 1) Add polyvinyl alcohol to 50°C water and raise the temperature to 95°C, stir until completely dissolved to obtain a polyvinyl alcohol solution; add barium sulfate powder, stir and mix thoroughly for 2 hours, adjust the pH value of the system to 8, and the system temperature to 95°C , after filtering and standing for degassing for 6h, the mass concentration (BaSO 4 and polyvinyl alcohol mass concentration) is 10% spinning stock solution;

[0025] 2) The spinning dope is subjected to wet s...

Embodiment 2

[0028] The barium sulfate / polyvinyl alcohol composite fiber of this embodiment is composed of the following components in mass percentage: 25% of barium sulfate and 75% of polyvinyl alcohol. The degree of polymerization of polyvinyl alcohol is 1750±50, the degree of alcoholysis ≥ 99%, and the particle size of barium sulfate is 8000 mesh.

[0029] The preparation method of the barium sulfate / polyvinyl alcohol composite fiber of the present embodiment may further comprise the steps:

[0030] 1) Add polyvinyl alcohol to 50°C water and raise the temperature to 95°C, stir until completely dissolved to obtain a polyvinyl alcohol solution; add barium sulfate powder, stir and mix thoroughly for 2 hours, adjust the pH value of the system to 6, and the system temperature to 95°C , after filtering and standing for degassing for 6h, the mass concentration (BaSO 4 and polyvinyl alcohol mass concentration) is 16% spinning dope;

[0031] 2) The spinning stock solution is subjected to wet s...

Embodiment 3

[0034] The barium sulfate / polyvinyl alcohol composite fiber of this embodiment is composed of the following components in mass percentage: 30% of barium sulfate and 70% of polyvinyl alcohol. The degree of polymerization of polyvinyl alcohol is 1750±50, the degree of alcoholysis ≥ 99%, and the particle diameter of barium sulfate is 10000 mesh.

[0035] The preparation method of the barium sulfate / polyvinyl alcohol composite fiber of the present embodiment may further comprise the steps:

[0036] 1) Add polyvinyl alcohol to 50°C water and raise the temperature to 100°C, stir until completely dissolved to obtain a polyvinyl alcohol solution; add barium sulfate powder, stir and mix thoroughly for 2 hours, adjust the pH value of the system to 10, and the system temperature to 100°C , after filtering and standing for degassing for 6h, the mass concentration (BaSO 4 and polyvinyl alcohol mass concentration) is 20% spinning stock solution;

[0037] 2) The spinning stock solution is ...

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Abstract

The invention discloses barium sulfate / polyvinyl alcohol composite fiber and a preparation method thereof and non-woven fabric. The composite fiber consists of the following components in percentage by mass: 20-80% of barium sulfate and 80-20% of polyvinyl alcohol. The composite fiber is prepared by blending superfine barium sulfate and polyvinyl alcohol and performing a wet spinning technology; and the prepared non-woven fabric has the characteristics of good resistance to ray radiation, good air permeability, smooth hand feeling, gentle gloss and wearing comfort and softness. The fineness of the composite fiber is 1.5-5dtex, the dry breaking strength is 2.0-8.0cN / dtex, the dry elongation at break is 15-40%, and the initial modulus reaches 60-100cN / dtex. The shielding rate of the non-woven fabric with fixed weight of 500g / m<2> and prepared from the composite fiber against medium- and low-energy X rays can exceed 70%, and the shielding rate of protective clothing can be further improved by adjusting the thickness or layer number of the fabric.

Description

technical field [0001] The invention belongs to the technical field of polyvinyl alcohol composite fibers, and in particular relates to a barium sulfate / polyvinyl alcohol composite fiber, a preparation method thereof, and a nonwoven fabric. Background technique [0002] With the rapid development of industrial and agricultural production, especially national defense science and technology, radiation medicine and atomic energy industry, various rays are widely used, and X-ray is one of the important ones. X-rays are often used in medical devices to check certain diseases of human internal organs or for quality inspection of industrial products. Long-term exposure to X-rays will cause damage to human gonads, breasts, red bone marrow, etc. If the dose exceeds a certain amount, it will also cause leukemia. Diseases such as bone tumors and bone tumors pose a serious threat to people's lives. According to the properties of X-rays and the mechanism of their interaction with substa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/50D01F1/10D01D5/06D04H1/4382
CPCD01D5/06D01F1/106D01F6/50D04H1/4382
Inventor 刘三民
Owner SHANGHAI QUANYU BIO TECH SUIPING
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