Sizing agent for improving tensile strength and toughness of glass fibers and preparation method thereof

A glass fiber and tensile strength technology, which is applied in the field of sizing agent and its preparation, can solve the problems of low maximum tensile strength and low toughness of glass fiber, and achieve the effects of large performance improvement, low price and wide source of raw materials

Active Publication Date: 2021-03-12
BEIJING INST OF ASTRONAUTICAL SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low toughness of glass fiber and the maximum tensile strength far below the theoretical strength, and provide a sizing agent that can be quickly and simply coated on the surface of glass fiber, and this sizing agent not only synthesizes The process is simple and does not affect other properties of the glass fiber after coating. The main content of the present invention is to invent a glass fiber sizing agent and the preparation method of this sizing agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] 1. Preparation of sizing agent, all ratios are mass ratios. Main component 4%: methyl phenyl vinyl silicone rubber; solvent 92.9%: 1:1 xylene and cyclohexanone; adhesive 1%: 1:1 sodium polyacrylate and TDE-85 epoxy resin; emulsification 0.1% agent: sodium dodecylbenzene sulfonate; 2% leveling agent: polydimethylsilane, and these raw materials are mixed into a sizing agent at room temperature according to the above ratio.

[0024] 2. Coating of sizing agent: Soak the glass fiber in the sizing agent for 10 minutes, take it out and dry it at 80°C, and measure the thickness of the sizing agent by measuring the radial cross-section of the glass fiber coated with the sizing agent using an atomic force microscope. , the glass fiber diameter is 51 μm.

[0025] 3. Tensile strength is tested using "Fiber Monofilament Tensile Strength Test Standard ISO11566-1996"; in the glass fiber brittleness and wear resistance test, the friction resistance test uses "Li Zhi, fiber friction pe...

Embodiment 1

[0028] 1. Preparation of sizing agent, all ratios are mass ratios. Main component 4%: methyl phenyl vinyl silicone rubber; solvent 92.9%: 1:1 xylene and cyclohexanone; adhesive 1%: 1:1 sodium polyacrylate and TDE-85 epoxy resin; emulsification 0.1% agent: sodium dodecylbenzene sulfonate; 2% leveling agent: polydimethylsilane, and these raw materials are mixed into a sizing agent at room temperature according to the above ratio.

[0029] 2. Coating of sizing agent: Soak the glass fiber in the sizing agent for 10 minutes, take it out and dry it at 80°C, and measure the thickness of the sizing agent by measuring the radial cross-section of the glass fiber coated with the sizing agent using an atomic force microscope. , the glass fiber diameter is 51 μm.

[0030] 3. Tensile strength is tested using "Fiber Monofilament Tensile Strength Test Standard ISO11566-1996"; there is no standard for glass fiber brittleness and wear resistance test at present, and friction resistance test ad...

Embodiment 2

[0033] 1. Preparation of sizing agent, all ratios are mass ratios. Main component 8%: methyl phenyl vinyl silicone rubber; solvent 83.5%: 1:1 xylene and cyclohexanone; adhesive 4%: 1:1 sodium polyacrylate and TDE-85 epoxy resin; emulsification 0.5% agent: sodium dodecylbenzene sulfonate; 4% leveling agent: polydimethylsilane, these raw materials are mixed into a sizing agent at room temperature according to the above ratio.

[0034] 2. Coating of sizing agent: After soaking the glass fiber in the sizing agent for 50 minutes, take it out and dry it at 120°C, use the atomic force microscope to test the radial cross-section of the glass fiber coated with the sizing agent, and measure the thickness of the sizing agent to be 87nm , the glass fiber diameter is 54 μm.

[0035]3. Tensile strength is tested by "Fiber Monofilament Tensile Strength Test Standard ISO11566-1996"; there is currently no standard for glass fiber toughness performance testing, and the toughness test uses "Sun...

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Abstract

The invention relates to a sizing agent for improving the tensile strength and toughness of glass fibers and a preparation method thereof, is to coat an ultra-thin coating on the surface of the glassfiber, belongs to the technical field of glass fiber manufacturing, also belongs to the technical field of organic/inorganic chemical engineering and also belongs to the technical field of thermal protection base materials. The thickness of the sizing agent coating coated on the surface of the glass fiber is generally 55-110nm, and the thickness is equivalent to about one thousandth of the generaldiameter of the glass fiber, wherein the general diameter is about 50mum; and the sizing agent has the characteristics of simple preparation process, wide raw material source, low price, simple and feasible coating process, large performance improvement amplitude, small influence on fiber diameter and the like.

Description

technical field [0001] The invention relates to a sizing agent for improving the tensile strength and toughness of glass fibers and a preparation method thereof. The surface of glass fibers is coated with an ultra-thin coating, which belongs to the technical field of glass fiber manufacturing and also belongs to the technical field of organic / inorganic chemical engineering. It also belongs to the technical field of thermal protection basic materials. Background technique [0002] Glass fiber, formerly known in English as: glass fiber or fiberglass is an inorganic non-metallic material with excellent performance. It is made of glass balls or waste glass through high-temperature melting, wire drawing, winding, weaving and other processes. The diameter of its monofilament is several microns to more than 20 microns, which is equivalent to 1 / 20-1 / 5 of a hair, and each bundle of fiber precursors is composed of hundreds or even thousands of monofilaments. Glass fiber has a melting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C25/465C03C25/40
CPCC03C25/465C03C25/40
Inventor 王国辉付继伟何巍陈红波王筱宇荀飞林三春杨若丽高雅
Owner BEIJING INST OF ASTRONAUTICAL SYST ENG
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