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Method for preventing ultraviolet ageing of Vectran fibers

A fiber and ultraviolet technology, which is applied in fiber treatment, fiber type, textile and papermaking, etc., can solve the problems of Vectran fiber's poor anti-ultraviolet aging effect, and achieve the effect of alleviating photoaging, good protection, and reducing etching

Inactive Publication Date: 2010-10-06
HARBIN INST OF TECH
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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 solve the problem that the anti-ultraviolet aging effect of Vectran fiber is poor when the existing protective layer of inorganic ultraviolet reflector or organic ultraviolet absorber is used alone, and the invention provides a method for protecting Vectran fiber from ultraviolet aging

Method used

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  • Method for preventing ultraviolet ageing of Vectran fibers
  • Method for preventing ultraviolet ageing of Vectran fibers
  • Method for preventing ultraviolet ageing of Vectran fibers

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Experimental program
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specific Embodiment approach 1

[0017] Specific Embodiment 1: The method for protecting Vectran fiber from ultraviolet aging in this embodiment is realized through the following steps: 1. Prepare TiO with a molar concentration of Ti element of 0.25-0.8 mol / L by sol-gel method 2 Hydrosol; Two, to the TiO that step one obtains 2 Add an organic solution of an organic absorbent to the hydrosol, and stir for 30-50 minutes to obtain a polymer coating, wherein the organic absorbent is salicylate, benzophenone, benzotriazole, substituted triazine or substituted Acrylonitrile, TiO 2 The volume ratio of the hydrosol to the organic solution of the organic absorbent is 0.2 to 0.7: 1, and the mass concentration of the organic absorbent in the organic solution of the organic absorbent is 0.1% to 10%; Then apply ultrasound to the polymer coating, take out the Vectran fibers after ultrasonic vibration for 20-30 minutes, and then dry them at room temperature, then put the Vectran fibers in an oven at 70-85°C, keep them dry ...

specific Embodiment approach 2

[0021] Specific embodiment two: the difference between this embodiment and specific embodiment one is that TiO in step one 2The preparation method of the hydrosol is: mix tetrabutyl titanate and glacial acetic acid in a molar ratio of 1:4, stir magnetically for 30-60 minutes to obtain a mixed solution, and then add the mixed solution to 0.05mol / L hydrochloric acid solution , after magnetic stirring at room temperature for 30 to 60 minutes, then placed in a water bath at 50 to 60°C and magnetically stirred for 30 to 50 minutes, then cooled naturally, and then aged at room temperature for 7 to 10 days to obtain TiO 2 Aqueous sol; wherein the molar ratio of tetrabutyl titanate to the volume of hydrochloric acid solution is 1mol: 2-4L. Other steps and parameters are the same as those in Embodiment 1.

[0022] The TiO prepared by this embodiment 2 The molar concentration of Ti element in the hydrosol is 0.25-0.5 mol / L.

specific Embodiment approach 3

[0023] Embodiment 3: This embodiment is different from Embodiment 2 in that it is placed in a 50° C. water bath and stirred magnetically for 30 minutes. Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention discloses a method for preventing ultraviolet ageing of Vectran fibers, which relates to a method for preventing ultraviolet ageing of coated fibers. The invention solves the problem of poor effect of preventing ultraviolet ageing of the existing Vectran fibers when a protective layer of an inorganic ultraviolet reflection agent or an organic ultraviolet absorbent is used independently. The method of the invention comprises the following steps: (1) preparing TiO2 hydrosol by a sol-gel method; (2) mixing the TiO2 hydrosol in the step (1) with organic solution of the organic absorbent to obtain a polymer paint; and (3) utilizing ultrasound effect to soak the polymer paint on the Vectran fibers, then airing the processed Vectran fibers and drying the Vectran fibers. The method has simple process and simple and easy operation and makes the Vectran fibers have protection functions of both ultraviolet reflection and ultraviolet absorption. The Vectran fibers obtained by the method are applied to a skin material of a high-altitude airship.

Description

technical field [0001] The invention relates to a method for preventing ultraviolet aging of coated fibers. Background technique [0002] Vectran fiber is a newly developed thermotropic liquid crystal high-performance fiber, which has excellent properties such as high strength, high modulus, creep resistance, heat and humidity resistance, abrasion resistance, acid and alkali resistance, and extremely low moisture absorption. Other high-performance fibers do not have the characteristics of vibration attenuation and shock absorption. Fibers and fabrics have particularly good impact resistance against sharp blades, and can be used in skin materials for high-altitude airships. However, a high-altitude airship (also called a stratospheric airship) is an unmanned airship that flies above 20km, is lighter than air and can stay in the air for a long time. The flight track is in the stratosphere, and the environmental conditions of the stratosphere are extremely harsh. The anti-ultr...

Claims

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Application Information

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IPC IPC(8): D06M13/224D06M13/152D06M13/352D06M13/358D06M13/348D06M11/46D06M101/32
Inventor 刘宇艳刘宇婷谭惠丰
Owner HARBIN INST OF TECH
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