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Environment-friendly explosion-proof modified ultra-high molecular weight polyethylene fiber and preparation method thereof

A technology of ultra-high molecular weight and polyethylene fibers, which is applied in fiber types, fiber processing, textiles and papermaking, etc. It can solve the problems of fiber mechanical property damage, damaged fiber mechanical properties, and damaged fiber self-strength, etc., to improve interface adhesion properties, nucleation and growth promotion, strength and toughness enhancement effects

Pending Publication Date: 2022-07-29
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above modification methods improve the bonding force between the fiber and the matrix to a certain extent, most of them are limited by the damage of the mechanical properties of the fiber, high-cost instruments and specific reaction conditions.
For example, the ultrasonic liquid oxidation method is characterized by simplicity and extensive research, but this method will damage the strength of the fiber itself and cause pollution to the environment.
Plasma treatment requires high equipment and high vacuum, and the treatment effect is not durable and uneven
In the radiation grafting experiment, there are many influencing factors that are difficult to control, and will damage the mechanical properties of fibers

Method used

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  • Environment-friendly explosion-proof modified ultra-high molecular weight polyethylene fiber and preparation method thereof
  • Environment-friendly explosion-proof modified ultra-high molecular weight polyethylene fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of a modified ultra-high molecular weight polyethylene fiber for environmental protection and explosion-proof use, the preparation method comprises the following steps:

[0025] (1) soak the ultra-high molecular weight polyethylene fiber in absolute ethanol for ultrasonic cleaning, take out and dry; then soak in tannic acid buffer solution (the concentration of tannic acid is 2g / L, and the concentration of sodium chloride is 15g / L , pH 7 tris(hydroxymethylaminomethane buffer), placed in a shaker at 25°C, and reacted for 6h at a shaking rate of 60r / min; finally, the pretreated ultra-high molecular weight was obtained after washing and drying. polyethylene fibers;

[0026] (2) In the deionized aqueous solution containing 1.6g / L zinc acetate dihydrate and 0.07g / L cetyltrimethylammonium bromide, add NaOH to adjust pH to 11, and then add the pretreatment obtained in step (1) The ultra-high molecular weight polyethylene fiber was ultrasonicated for 1 hou...

Embodiment 2

[0028] A preparation method of a modified ultra-high molecular weight polyethylene fiber for environmental protection and explosion-proof use, the preparation method comprises the following steps:

[0029] (1) soak the ultra-high molecular weight polyethylene fiber in absolute ethanol for ultrasonic cleaning, take out and dry; then soak in tannic acid buffer solution (the concentration of tannic acid is 0.5g / L, the concentration of sodium chloride is 15g / L) L, tris(hydroxymethylaminomethane buffer solution with pH 8), placed in a shaker at 25°C, and the shaking rate was 120r / min to react for 2h; after final cleaning and drying, the pretreated ultra-high Molecular weight polyethylene fibers;

[0030] (2) in the deionized aqueous solution containing 1.02g / L zinc acetate dihydrate and 0.01g / L cetyltrimethylammonium bromide, add NaOH to adjust pH to 9, then add the pretreatment obtained in step (1) The ultra-high molecular weight polyethylene fiber of 80 ° C, the power is 80 kHz,...

Embodiment 3

[0032] A preparation method of a modified ultra-high molecular weight polyethylene fiber for environmental protection and explosion-proof use, the preparation method comprises the following steps:

[0033] (1) soak the ultra-high molecular weight polyethylene fiber in absolute ethanol for ultrasonic cleaning, take out and dry; then soak in tannic acid buffer solution (the concentration of tannic acid is 4g / L, the concentration of sodium chloride is 15g / L , tris(hydroxymethylaminomethane buffer solution with pH 9), placed in a shaker at 25°C, and reacted for 8h under the condition of a shaking rate of 100r / min; finally, the pretreated ultra-high molecular weight was obtained after washing and drying. polyethylene fibers;

[0034] (2) in the deionized aqueous solution containing 2g / L zinc acetate dihydrate and 0.05g / L cetyltrimethylammonium bromide, add NaOH to adjust pH to 13, then add the pretreated Ultra-high molecular weight polyethylene fiber, sonicated for 1 hour at 80°C ...

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Abstract

The invention discloses a preparation method of green and environment-friendly explosion-proof modified ultra-high molecular weight polyethylene fiber, which comprises the following steps: (1) soaking ultra-high molecular weight polyethylene fiber in absolute ethyl alcohol for ultrasonic cleaning, taking out and drying; soaking in a tannic acid buffer solution, and reacting in a shaking table at 25 DEG C for 2-10 hours; finally, cleaning and drying to obtain pretreated ultra-high molecular weight polyethylene fibers; (2) adding 1mol / L NaOH into a deionized water solution containing zinc acetate dihydrate and a surfactant to adjust the pH value to 9-13, then adding the pretreated ultra-high molecular weight polyethylene fiber obtained in the step (1), and carrying out ultrasonic treatment at 80 DEG C for 1 hour; and then drying to obtain the explosion-proof modified ultra-high molecular weight polyethylene fiber. The method has the advantages of mild reaction conditions, cheap and easily available raw materials, greenness, environmental protection and sustainability.

Description

technical field [0001] The invention relates to the technical field of surface modification of ultra-high molecular weight polyethylene fibers, in particular to a modified ultra-high molecular weight polyethylene fiber for environmental protection and explosion-proof and a preparation method thereof. Background technique [0002] Explosion-proof materials are used to resist the hazards caused by shock waves and flying objects formed by the demolition and blasting of buildings. The ideal explosion-proof material should have a certain strength and be able to resist the impact of flying objects. At the same time, it has compressive and tensile capabilities, and can resist the compressive force generated by the explosion shock wave acting on the material, and the delamination of the material caused by the reflected tensile wave. [0003] The density of UHMWPE fiber is 0.98g / cm 3 It has excellent impact resistance, can meet the requirements of lightweight explosion-proof materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/238D06M11/44D06M101/20
CPCD06M13/238D06M11/44D06M2101/20
Inventor 俞科静陈天欢周凡钱坤刘景艳孙洁
Owner JIANGNAN UNIV
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