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Preparation method of silicon dioxide/ultra-high molecular weight polyethylene non-woven cloth

A technology of ultra-high molecular weight and silica, applied in textiles and papermaking, fiber type, fiber treatment, etc., can solve the problem of affecting the mechanical properties of STF/ultra-high molecular weight polyethylene non-woven fabrics and poor wettability of ultra-high molecular weight polyethylene fibers , Unable to guarantee uniformity and other issues, to achieve the effect of novel process route, light weight and good uniformity

Active Publication Date: 2022-04-12
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wettability of ultra-high molecular weight polyethylene fibers is very poor, and SiO2 is prone to agglomeration, and the impregnation method cannot ensure that SiO2 is in the ultra-high molecular weight polyethylene non-weft fabric. The uniformity of distribution on the surface, which seriously affects the mechanical properties of STF / ultra-high molecular weight polyethylene non-weft fabric

Method used

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  • Preparation method of silicon dioxide/ultra-high molecular weight polyethylene non-woven cloth
  • Preparation method of silicon dioxide/ultra-high molecular weight polyethylene non-woven cloth
  • Preparation method of silicon dioxide/ultra-high molecular weight polyethylene non-woven cloth

Examples

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Effect test

Embodiment 1

[0048] 1) Put PEG200 in a beaker and add SiO to one side 2 While stirring the powder, add a certain amount of SiO 2 Stir again for 2 hours, and put it into a vacuum drying oven at 80°C for 24 hours of vacuum defoaming to obtain STF, wherein, SiO 2 The particle size is 7-40nm, SiO 2 The solids content was 15%.

[0049] 2) Pretreat the ultra-high molecular weight polyethylene non-weft cloth by ultrasonicating the ultra-high molecular weight polyethylene non-weft cloth in acetone and ethanol solutions for 2 minutes, rinse with deionization several times and dry at 80°C for 1 hour .

[0050] 3) Soak the pretreated ultra-high molecular weight polyethylene non-weft cloth in the STF solution for 15 minutes, then take it out and put it in a vacuum drying oven at 80°C for 6 hours to obtain the ultra-high molecular weight polyethylene cloth impregnated with the STF solution. Polyethylene non-weft cloth, wherein the STF solution is composed of STF and absolute ethanol with a volume r...

Embodiment 2

[0055] 1) Put PEG200 in a beaker and add SiO to one side 2 While stirring the powder, add a certain amount of SiO 2 Stir again for 2 hours, and put it into a vacuum drying oven at 80°C for 24 hours of vacuum defoaming to obtain STF, wherein, SiO 2 The particle size is 7-40nm, SiO 2 The solids content was 15%.

[0056] 2) Pretreat the ultra-high molecular weight polyethylene non-weft cloth by ultrasonicating the ultra-high molecular weight polyethylene non-weft cloth in acetone and ethanol solutions for 2 minutes, rinse with deionization several times and dry at 80°C for 1 hour .

[0057] 3) impregnate the pretreated ultra-high molecular weight polyethylene non-weft cloth in 15% SiO 2 The solid content of the STF solution for 15 minutes, then take it out and put it in a vacuum drying oven at 80 ° C for 6 hours to obtain an ultra-high molecular weight polyethylene non-woven fabric impregnated with the STF solution, wherein the STF solution is obtained by volume ratio It is ...

Embodiment 3

[0060] 1) Put PEG200 in a beaker and add SiO to one side 2 While stirring the powder, add a certain amount of SiO 2 Stir again for 2 hours, and put it into a vacuum drying oven at 80°C for 24 hours of vacuum defoaming to obtain STF, wherein, SiO 2 The particle size is 7-40nm, SiO 2 The solids content was 15%.

[0061] 2) Pre-treat the ultra-high molecular weight polyethylene non-weft cloth, ultrasonic the ultra-high molecular weight polyethylene non-weft cloth in acetone and ethanol solutions for 2 minutes, rinse with deionization several times and dry at 80°C for 1 hour .

[0062] 3) impregnate the pretreated ultra-high molecular weight polyethylene non-weft cloth in 15% SiO 2 solid content of STF solution for 15 minutes, then take it out and dry it in a vacuum oven at 80°C for 6 hours to obtain SiO 2 / Ultra-high molecular weight polyethylene non-weft cloth, wherein the STF solution is composed of STF and absolute ethanol with a volume ratio of 1:1.

[0063] 4) Put the...

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Abstract

The invention discloses a preparation method of silicon dioxide / ultra-high molecular weight polyethylene non-woven cloth, and belongs to the field of coating of paints.The preparation method comprises the steps that firstly, the ultra-high molecular weight polyethylene non-woven cloth is pretreated, then the pretreated non-woven cloth is soaked in an STF solution and put into a mixed solution of the STF solution and a TA solution to be subjected to a hydrothermal reaction, and the silicon dioxide / ultra-high molecular weight polyethylene non-woven cloth is obtained; the silicon dioxide / ultra-high molecular weight polyethylene non-woven cloth is prepared. The method is simple and environment-friendly, the uniformly-coated SiO2 / ultra-high molecular weight polyethylene non-woven cloth capable of being applied to the field of light protection equipment is prepared by adopting a hydrothermal method for the first time, and compared with a pure impregnation method, the uniformity of the SiO2 coated non-woven cloth is better, and light weight of high-performance fiber fabric protection equipment is favorably realized.

Description

technical field [0001] The invention relates to the field of paint coating, in particular to a method for preparing a silicon dioxide ultra-high molecular weight polyethylene non-weft cloth. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber is a high-performance special fiber. The axial tensile specific strength of the fiber is one of the highest strength fibers in industrialization. Its energy absorption performance is better than that of aramid fiber, and it has chemical resistance. Corrosion, UV resistance, low dielectric constant, impact resistance and cutting resistance and other excellent properties, therefore, UHMWPE fiber is widely used in the field of personal protection, and has become an ideal material for the preparation of lightweight protective equipment (stab and cut resistance). [0003] Shear thickening fluid (STF) is composed of dispersed phase particles and dispersion medium. It is a reversible fluid with non-Newtonian m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D06M13/12D06M13/144D06M13/328D06M101/20
Inventor 周根树张曼茹李佳宸
Owner XI AN JIAOTONG UNIV
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