Method for improving tensile mechanical property of fibers

A fiber and performance technology, applied in fiber processing, ultrasonic/acoustic fiber processing, gaseous chemical plating, etc., can solve the problems of high selectivity of matrix materials, difficulty in continuous production, lack of universality, etc., and achieve controllable High performance, simple process equipment and reaction conditions, and the effect of improving tensile mechanical properties

Inactive Publication Date: 2017-02-01
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of this method is complicated, the reaction time is relatively long, and there are certain difficulties in continuous production. The most important thing is that this method has a high selectivity to the matrix material, and is limited to only a few fibers with highly active groups. Such as natural protein fibers, polyurethane fibers, etc., are not universal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The carbon fibers were ultrasonically cleaned in ethanol at a bath ratio of 1:50 for 240 minutes, then soaked in hot water at 50°C for 30 minutes to remove residual ethanol on the surface of the carbon fibers, and then dried in a drying oven at 80°C for 6 hours until the carbon fibers The moisture on the surface is completely removed, and the cleaned carbon fiber is treated with low-temperature corona irradiation for 5 minutes. The temperature of low-temperature corona irradiation is 10°C, the voltage of low-temperature corona irradiation is 6KV, and the distance 0.5 cm to obtain activated carbon fibers, and then put the activated carbon fibers into the reaction chamber of the atomic layer deposition equipment at a temperature of 50 ° C, purging with high-purity nitrogen for 3 minutes, using p-phenylene diisocyanate as the first precursor, Heat the p-phenylene diisocyanate to 40°C to form p-phenylene diisocyanate vapor, and send the p-phenylene diisocyanate vapor into th...

Embodiment 2

[0023] Clean the cotton fibers ultrasonically for 250 minutes in ethanol at a bath ratio of 1:60, then take them out, then soak them in hot water at 60°C for 30 minutes to remove the residual ethanol on the surface of the cotton fibers, and then dry them in a drying oven at 80°C for 8 hours. Until the moisture on the surface of the cotton fiber is completely removed, the cleaned cotton fiber is treated with low-temperature corona irradiation for 8 minutes. The distance of irradiation is 1cm to obtain activated cotton fibers, and then the activated cotton fibers are placed in the reaction chamber of atomic layer deposition equipment with a temperature of 60°C, purged with nitrogen gas with a purity of 99.999% for 5min, and treated with p-benzene Diisocyanate is the first precursor, p-phenylene diisocyanate is heated to 50°C to form p-phenylene diisocyanate vapor, and the p-phenylene diisocyanate vapor is sent into the reaction chamber in pulse form, the pulse time is 2s, and the...

Embodiment 3

[0026] Clean the bamboo fibers ultrasonically for 260 minutes in propanol at a bath ratio of 1:50, then take them out, then soak them in hot water at 80°C for 30 minutes to remove the residual propanol on the surface of the bamboo fibers, and then dry them in a drying oven at 100°C 8h, until the moisture on the surface of the bamboo fiber is completely removed, the bamboo fiber after the cleaning treatment is treated with low-temperature corona irradiation for 8min, wherein the temperature of the low-temperature corona irradiation is 30°C, the voltage of the low-temperature corona irradiation is 10KV, and the low-temperature corona irradiation is 10KV. The distance of corona irradiation is 1.5cm, obtains the activated bamboo fiber, then puts the activated bamboo fiber into the reaction chamber of the atomic layer deposition equipment with a temperature of 75°C, and purging 6min with nitrogen gas with a purity of 99.999%. Use p-phenylene diisocyanate as the first precursor, heat...

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Abstract

The invention in particular relates to a method for improving tensile mechanical property of fibers and belongs to fiber modification technologies. The method comprises the following steps: taking papa-phenylene diisocyanate and ethidene diamine as precursors, and depositing a polyurethane film on the fiber surface by adopting an atomic layer deposition technique. Due to excellent shape preservation of the atomic layer deposition technique, the defects of the original fibers can be effectively reduced, and due to high elasticity of polyurethane, the original fibers can effectively buffer instantaneous mechanical changes in the tensile process, so that the tensile mechanical properties of fibers can be effectively reduced. The preparation method is simple, the deposition process is easy to control, the cost and energy consumption are low, and the method is pollution-free to the ecological environment and suitable for industrial production.

Description

technical field [0001] The invention relates to a method for improving the tensile mechanical properties of fibers, which belongs to the fiber modification technology. Background technique [0002] Fibers mainly include natural fibers and chemical fibers, which are natural or synthetic filamentous substances, and there are many types. With the continuous development of science and technology, the performance of fibers is constantly improving. As an important support for the national economy, its products have been used in various industries, such as exploration and production of offshore oil and gas fields, new civil construction and earthquake relief reinforcement repair materials, transportation Development of tools, sports and leisure products, etc. However, the fiber material itself has defects such as ravines and dents. During the stretching process, due to stress concentration, it is first broken from the defect. Chinese Patent Publication No. CN103469602A, dated Dec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/10D06M10/02C23C16/455
CPCD06M10/10C23C16/45555D06M10/025
Inventor 陈凤翔杨辉宇徐卫林刘欣
Owner WUHAN TEXTILE UNIV
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