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Preparation method of flexible acid-resistant temperature-resistant glass modified fibers

A glass fiber and temperature-resistant technology, which is applied in the field of preparation of flexible acid-resistant and temperature-resistant modified glass limiters, can solve the problems of poor wear resistance, poor plasticity, thermal stability and thermal expansion coefficient of glass fibers, and achieves difficult separation. , good flexibility, good production and processing performance and the effect of textile performance

Active Publication Date: 2017-05-31
XIAMEN ZHONGCHUANG ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, glass fiber has poor wear resistance, is difficult to bend and entangle with each other, is brittle, and has extremely poor plasticity. It is usually used as a reinforcement in fiber-reinforced composite materials or as a reinforcement material for organic polymers. In the field of non-woven fabrics, there is no adhesive It is difficult to effectively form a felt under the condition of the binder, and the use of the binder, on the one hand, blocks the fiber network and affects the application of the glass fiber mat, and on the other hand, the difference in thermal stability and thermal expansion coefficient severely limits the application of the glass fiber in the high temperature field.

Method used

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  • Preparation method of flexible acid-resistant temperature-resistant glass modified fibers

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Glass fiber dispersion and pretreatment: add glass fiber to the acid solution composed of hydrogen peroxide, acetic acid, and lauric acid, disperse with ultrasonic oscillation, the frequency is 30KHz, and the time is 40min, and then add methacrylic acid with glass fiber content of 0.2%wt. For acyloxypropyltrimethoxysilane, increase the ultrasonic oscillation frequency to 80KHz, and the treatment time is 15min.

[0018] Place the pretreated glass fiber in dimethylformamide with a water content of less than 5%, heat it up to 50°C, and add (3,3,3-trifluoropropyl) trimethoxy with a glass fiber content of 5%wt. (3-Chloropropyl)trimethoxysilane with a glass fiber content of 8%wt., ultrasonically oscillated at a frequency of 50KHz for 60min, washed with water, and dried in vacuum at 120°C for 1.5h to obtain a nonwoven fabric Modified glass fiber with flexible acid and temperature resistance.

Embodiment 2

[0020] Glass fiber dispersion and pretreatment: Add glass fiber to the mixed acid solution composed of sulfuric acid and acetic acid with a mass concentration of 30%, ultrasonically oscillate and disperse at a frequency of 50KHz for 20min, and then add glass fiber content 1.5%wt. Ethyl silicate, increase the ultrasonic oscillation frequency to 100KHz, and process for 30 minutes.

[0021] Place the pretreated glass fiber in dimethylformamide with a water content of less than 5%, heat it up to 70°C, and add (3,3,3-trifluoropropyl) trimethoxy with a glass fiber content of 20%wt. Add (3-chloropropyl)trimethoxysilane with a glass fiber content of 12%wt., ultrasonically oscillate at a frequency of 80KHz for 40min, wash with water, and dry in vacuum at 120°C for 3h to obtain nonwoven fabrics. Flexible acid-resistant and temperature-resistant modified glass fiber.

Embodiment 3

[0023] Glass fiber dispersion and pretreatment: Add glass fiber to the mixed acid solution composed of lauric acid and palm tree, disperse by ultrasonic vibration, the frequency is 40KHz, and the time is 30min, then add γ-glycidol with a glass fiber content of 1.0%wt. Etheroxypropyltrimethoxysilane, methoxypropyltrimethoxysilane methacrylate, γ-aminopropyltriethoxysilane, γ-aminopropylmethyldimethoxysilane (the composition ratio is 3 :3:3:1), increase the ultrasonic oscillation frequency to 90KHz, and the processing time is 20min.

[0024] Place the pretreated glass fiber in dimethylformamide with a water content of less than 5%, heat it up to 60°C, and add (3,3,3-trifluoropropyl) trimethoxy with a glass fiber content of 10%wt. (3-Chloropropyl)trimethoxysilane with a glass fiber content of 10%wt., ultrasonically oscillated at a frequency of 70KHz for 50min, washed with water, and vacuum-dried at 120°C for 2h to obtain nonwoven fabrics Flexible acid-resistant and temperature-r...

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Abstract

The invention discloses a preparation method of flexible acid-resistant temperature-resistant modified glass fibers for nonwovens. The method comprises the following steps: 1. carrying out dispersion and pretreatment on glass fibers; and 2. carrying out modification treatment on the pretreated glass fibers, and carrying out vacuum drying to obtain the flexible acid-resistant temperature-resistant modified glass fibers. According to the characteristics of poor toughness, high brittleness and high frangibility of glass fibers in the nonweaving process, the invention provides flexible acid-resistant temperature-resistant modified glass fibers for nonwovens. The modified glass fibers have the advantages of high temperature resistance, acid resistance, favorable flexibility, favorable processability and favorable weaving performance.

Description

technical field [0001] The invention relates to the technical field of glass fibers, in particular to a method for preparing a flexible acid-resistant and temperature-resistant modified glass limiter for non-woven fabrics. Background technique [0002] Glass fiber is an inorganic non-metallic material with excellent performance, relatively low price, and a density of 2.5g / cm 3 Around, the breaking strength is 3-4.5GPa, which is larger than steel wire of the same fineness, and can withstand high temperatures above 300°C. It has excellent properties such as non-combustibility, high temperature resistance, high tensile strength, and good chemical stability. It is used in construction, transportation, Electronics, electrical, chemical, metallurgy, national defense and other fields have become popular raw materials. However, glass fiber has poor wear resistance, is difficult to bend and entangle with each other, is brittle, and has extremely poor plasticity. It is usually used a...

Claims

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Application Information

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IPC IPC(8): C03C25/66C03C25/40
CPCC03C25/40C03C25/66
Inventor 蔡伟龙王巍刘滨李彪
Owner XIAMEN ZHONGCHUANG ENVIRONMENTAL TECH CO LTD
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