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A kind of polyethersulfone aqueous sizing agent and its preparation method

A sulfone water-based and polyethersulfone technology, applied in the field of polyethersulfone water-based sizing agent and its preparation method, can solve the problem of affecting the interfacial bonding strength and overall performance of composite materials, increasing the processing cost of sizing agent and carbon fiber, and being unfavorable for subsequent processing of fibers and other problems, to achieve good industrialization prospects, easy to repeat the realization, simple and reliable preparation process

Active Publication Date: 2016-01-20
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the industrial continuous sizing process, a certain tension is applied to the fiber bundle, and the position of the monofilaments in the fiber bundle is relatively fixed and closely arranged. During the preparation process of composite materials, the bonded fibers are not easy to be completely impregnated by matrix resin, thus affecting the interfacial bonding strength and overall performance of composite materials.
In addition, compared with water-based systems, solvent-based sizing agents use organic solvents as the dispersed phase, which increases the processing costs of sizing agents and carbon fibers, and further increases the burden on the already expensive carbon fiber production process
Furthermore, the fiber flexibility after sizing with solvent-based sizing agent is poor, and the tow is stiff, which is not conducive to the subsequent processing of fibers.
In order to solve the problems of low interfacial bonding strength between polyethersulfone resin and carbon fiber and solvent-based thermoplastic sizing agents, it is necessary to develop a low-cost water-based carbon fiber sizing agent with polyethersulfone resin as the main sizing agent

Method used

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  • A kind of polyethersulfone aqueous sizing agent and its preparation method
  • A kind of polyethersulfone aqueous sizing agent and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 100g of polyethersulfone resin with brand name A-300 from Solvay, USA, add it into 265ml of dimethylformamide, and dissolve to prepare a polyethersulfone solution. Then weigh 40g of Tween80 and add it to 19.61L of deionized water, raise the temperature of the system to 60°C, use an emulsifier to mix at a high speed of 8000rpm for 30min, and then cool to room temperature to obtain an aqueous emulsion of the emulsifier. Add the prepared polyethersulfone solution into the emulsifier aqueous emulsion at a system temperature of 40°C and an emulsification speed of 8000 rpm, mix at high speed for 30 minutes, and cool to room temperature to obtain a polyethersulfone water-based sizing agent.

[0029] The mass fraction of the main size in the sizing agent is 0.5%, the mass fraction of dimethylformamide is 1.3%, the mass fraction of emulsifier Tween80 is 0.2%, and the mass fraction of deionized water is 98.0%.

Embodiment 2

[0031] Weigh 100 g of polyethersulfone resin with brand E2010 from BASF, Germany, add it into 268 ml of dimethylacetamide, and dissolve to prepare a polyethersulfone solution. Weigh 100 g of Span80 and add it to 4.55 L of deionized water, raise the temperature of the system to 80 ° C, use an emulsifier to mix at a high speed of 12000 rpm for 60 min, and then cool to room temperature to obtain an aqueous emulsion of the emulsifier. Add the prepared polyethersulfone solution into the emulsifier aqueous emulsion at a system temperature of 80°C and an emulsification speed of 12,000 rpm, mix at high speed for 60 minutes, and cool to room temperature to obtain a polyethersulfone water-based sizing agent.

[0032] The mass fraction of the main size in the sizing agent is 2.0%, the mass fraction of dimethylacetamide is 5.0%, the mass fraction of emulsifier Span80 is 2.0%, and the mass fraction of deionized water is 91.0%.

Embodiment 3

[0034] Weighed 100 g of polyethersulfone resin with brand name E3010 from BASF, Germany, and added it into 318 ml of dimethylformamide, and dissolved it to prepare a polyethersulfone solution. Weigh 50g of Span60 and add it into 9.55L of deionized water, raise the temperature of the system to 50°C, use an emulsifier to mix at a high speed of 9000rpm for 40min, and then cool to room temperature to obtain an aqueous emulsion of emulsifier. Add the prepared polyethersulfone solution into the aqueous emulsion of emulsifier under the conditions of system temperature 60°C and emulsification speed 10000rpm, mix at high speed for 45min, and cool to room temperature to obtain polyethersulfone water-based sizing agent.

[0035] The mass fraction of the main size in the sizing agent is 1.0%, the mass fraction of dimethylformamide is 3.0%, the mass fraction of emulsifier Span60 is 0.5%, and the mass fraction of deionized water is 95.5%.

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Abstract

A polyether sulfone water-based sizing agent contains the following components by weight percent: 0.5%-2.0% of main slurry, 0.2%-2.0% of an emulsifier, 1.3%-6.0% of an organic solvent, and 90.0%-98.0% of deionized water. The polyether sulfone water-based sizing agent provided by the invention has the advantages that the interface bonding strength between polyether sulfone resin and carbon fiber can be improved, the cost is low, and the flexibility of carbon fiber after sizing is good.

Description

technical field [0001] The invention belongs to a carbon fiber sizing agent and a preparation method thereof, in particular to a polyethersulfone water-based sizing agent and a preparation method thereof. technical background [0002] As a high-performance composite material reinforcement with high specific strength and high specific modulus, carbon fiber is widely used in the preparation of different types of composite materials such as resin matrix, ceramic matrix and metal matrix. In order to obtain excellent interfacial bonding performance between carbon fiber and different matrix materials, it is necessary to prepare different carbon fiber surface coatings according to the specific type of matrix material. [0003] Polyethersulfone is a typical amorphous thermoplastic polymer, and is praised by the industry as the first high-performance thermoplastic resin with high heat distortion temperature, high impact strength and excellent molding performance. Carbon fiber / polyet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/63C08J5/06C08K9/04C08K7/06C08L81/06D06M101/40
Inventor 吕春祥张寿春原浩杰
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI