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Aqueous emulsion type carbon fiber sizing agent with controllable carbon fiber appearance properties and preparation method thereof

A water-based emulsion, carbon fiber technology, applied in the direction of carbon fiber, fiber processing, textiles and papermaking, etc., can solve difficult problems, and achieve the effect of simple and effective method, good emulsion stability, and easy process operation.

Active Publication Date: 2020-04-10
ZHONGFU SHENYING CARBON FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, for carbon fiber, the apparent performance of carbon fiber is passively expressed according to the composition of the sizing agent. It is difficult to start from the customer's needs and actively control the components of the carbon fiber sizing agent to obtain the carbon fiber with the apparent performance required by the customer.

Method used

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  • Aqueous emulsion type carbon fiber sizing agent with controllable carbon fiber appearance properties and preparation method thereof
  • Aqueous emulsion type carbon fiber sizing agent with controllable carbon fiber appearance properties and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] To control the apparent properties of carbon fiber to be 7.0±1mm in width, 9±3cm in drape, 1.8±0.2 in stretchability, and A+ in wear resistance; 30 parts of resin, gradually add 10 parts of emulsifier isotridecyl polyoxyethylene ether, stir and disperse at high speed, and gradually add 80 parts of deionized water at the same time, prepare a water-based epoxy resin emulsion with uniform stability according to the phase inversion method, according to the same concentration Add 6 parts of compound specific regulators in the lower weight ratio, including 2 parts of regulator A polyester water-based polyurethane, 2 parts of regulator B polyvinyl alcohol, regulator C fatty alcohol polyoxyethylene ether (carbon chain R is C12-18 ) 2 parts, after fully stirring evenly, the resulting sizing agent can be obtained, which can meet the requirements. The test values ​​are: width 6.9mm, drape 10.5cm, stretchability 1.81, wear resistance A+.

Embodiment 2

[0024] To control the apparent properties of carbon fiber to be 6.5±1mm in width, 13±3cm in drape, 1.6±0.2 in stretchability, and A+ in abrasion resistance, 30 parts of bisphenol A epoxy resin (300 g / equivalent), gradually add 5 parts of emulsifier isotridecyl polyoxyethylene ether, 5 parts of alkylphenol polyoxyethylene ether and high-speed stirring to disperse, and gradually add 80 parts of deionized water at the same time, prepare according to the phase inversion method to obtain uniform stability Water-based resin emulsion, according to the weight ratio under the same concentration, add 8 parts of compound specific regulators, wherein regulator A polyether type water-based polyurethane is 4 parts, regulator B polypropylene glycol 2 parts, regulator C fatty alcohol polyoxyethylene ether (Carbon chain R is C12-18) 2 parts, fully stirred to obtain a sizing agent emulsion, which can meet the requirements, the test values ​​are: width 6.7mm, drape 14.3cm, stretchability 1.73, a...

Embodiment 3

[0026] Able to control the apparent performance of carbon fibers to be 6.5±1mm in width, 16±3cm in drape, 1.5±0.2 in stretchability, and A+ in wear resistance grade, then add 30 parts of bisphenol A epoxy resin according to the weight ratio (300 g / equivalent), gradually add 3 parts of emulsifier isotridecyl polyoxyethylene ether, 3 parts of alkylphenol polyoxyethylene ether, 4 parts of sorbitan tristearate and disperse at high speed, and gradually add 80 parts of deionized water at the same time According to the phase inversion method to prepare a water-based resin emulsion with uniform stability, add 10 parts of compound specific regulator according to the weight ratio at the same concentration, wherein the regulator A polyether-type water-based polyurethane, polyester-type water-based polyurethane and water-based polyester 2 parts of each emulsion, 1 part of regulator B polyethylene glycol, 1 part of higher fatty alcohol, 2 parts of regulator C fatty alcohol polyoxyethylene ...

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Abstract

The invention discloses an aqueous emulsion carbon fiber sizing agent with a controlled carbon fiber apparent property and a preparation method thereof. The sizing agent is prepared by the following steps: gradually adding 5-50 part by weight of resin into 2-30 parts by weight of an emulsifier step by step and stirring the mixture to disperse at high speed; meanwhile, gradually adding 20-200 partsby weight of deionized water; preparing an aqueous resin emulsion with uniform stability by means of a phase reversal method; adding 1-20 parts by weight of a compound regulator according to the sameconcentration, wherein the compound regulator comprises a regulator A, a regulator B and a regulator C, and the proportion of the regulators is determined according to needed apparent property; and fully and uniformly stirring the mixture to obtain the sizing agent. According to the preparation method provided by the invention, the process is simple, the stability of emulsion is good, the apparent property of carbon fibers can be controlled by regulating the proportion of components of the compound regulator, and the preparation method has wide and significant actual meaning on application demands.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber material preparation, and relates to an aqueous emulsion carbon fiber sizing agent with controllable carbon fiber appearance properties and a preparation method thereof. Background technique [0002] Carbon fiber is known as the "king of new materials" for its excellent performance, and is one of the most important reinforcements of advanced composite materials. Its tensile strength and elastic modulus are the key to achieving the structural performance goals of composite materials. Carbon fiber composite materials have the characteristics of light weight, high strength, and high elastic modulus, which contribute greatly to the improvement of the performance of weapons and equipment. They are widely used in the manufacture of aircraft bodies, engines, missile shells and other major national defense and industrial fields. [0003] After the carbon fiber has undergone high-temperature heat trea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/55D06M15/572D06M15/333D06M15/53D06M15/568D06M13/144D06M101/40
CPCD06M13/144D06M15/333D06M15/507D06M15/53D06M15/55D06M15/564D06M15/568D06M15/572D06M2101/40
Inventor 欧阳新峰刘芳李韦李果杨平
Owner ZHONGFU SHENYING CARBON FIBER