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Composite water-based emulsion sizing agent for carbon fibers, and preparation method for sizing agent

A water-based emulsion and composite technology, applied in the direction of carbon fiber, fiber type, fiber treatment, etc., can solve the problems of poor fatigue resistance and impact resistance, high cross-linking density, high surface energy, etc., and achieve stable glue content and uniform sizing amount , Cloth surface performance is excellent

Inactive Publication Date: 2016-04-13
ZHONGFU SHENYING CARBON FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its high mechanical properties, excellent adhesion and bonding properties, good chemical stability and heat resistance, and no or little organic solvent, waterborne epoxy resin greatly expands its application field, but epoxy resin curing The post-crosslinking density is high, showing a three-dimensional network structure, and there are deficiencies such as large internal stress, brittleness, poor fatigue resistance and impact resistance, and high surface energy, which limits its application to a large extent.

Method used

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  • Composite water-based emulsion sizing agent for carbon fibers, and preparation method for sizing agent
  • Composite water-based emulsion sizing agent for carbon fibers, and preparation method for sizing agent
  • Composite water-based emulsion sizing agent for carbon fibers, and preparation method for sizing agent

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Experimental program
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Effect test

Embodiment 1

[0026] Dilute the water-based polyurethane modified epoxy resin emulsion A1, thermoplastic aliphatic saturated polyol B1, and toughening aid C1 into 3% water-based dilute emulsion, mix them uniformly according to the mass ratio of 2:6:1, stop stirring, A composite aqueous emulsion sizing agent for carbon fibers was obtained.

[0027] The mechanical properties of carbon fiber composite water-based emulsion sizing agent were tested.

Embodiment 2

[0029] Dilute the water-based polyurethane modified epoxy resin emulsion A2, thermoplastic aliphatic saturated polyol B1, and toughening aid C1 into 3% water-based dilute emulsion, mix them uniformly according to the mass ratio of 3:6:1, stop stirring, A composite aqueous emulsion sizing agent for carbon fibers was obtained.

[0030] The mechanical properties of carbon fiber composite water-based emulsion sizing agent were tested.

Embodiment 3

[0032] Dilute the water-based phenolic modified epoxy resin emulsion A3, thermoplastic unsaturated polyol B2, and toughening aid C1 into a 3% water-based dilute emulsion, mix them uniformly in a mass ratio of 3:7:1, and stop stirring to obtain Composite aqueous emulsion sizing agent for carbon fiber.

[0033] The mechanical properties of carbon fiber composite water-based emulsion sizing agent were tested.

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Abstract

The invention discloses a composite water-based emulsion sizing agent for carbon fibers, and a preparation method for the sizing agent. The composite water-based emulsion sizing agent is prepared from water-based modified epoxy resin emulsion, thermoplastic resin and a toughening additive according to a ratio. The prepared water-based emulsion sizing agent is excellent in compatibility, high in adsorption and carbon fiber wettability, and long in storage time; after sizing, the carbon fibers are uniform in sizing amount, and stable in gum content, fuzziness, ductility, hardness, width coefficient and friction coefficient; compared with a single sizing agent, the interlaminar shear strength of a sample strip adopting the sizing agent is improved by 10%, and the fabric performance of both wet method prepreg cloth and woven cloth by use of the sizing agent is excellent.

Description

technical field [0001] The invention relates to the technical field of sizing agents for carbon fibers, in particular to a composite water-based emulsion sizing agent for carbon fibers and a preparation method thereof. Background technique [0002] With high specific strength and specific modulus, carbon fiber is one of the main reinforcement materials for advanced composite materials, and is widely used in aerospace, sports equipment and industrial fields. Compared with traditional materials, carbon fiber composite materials have the characteristics of low density, high strength, high modulus, high temperature resistance, high temperature resistance, chemical corrosion resistance, low electrical resistance, high thermal conductivity, low thermal expansion, chemical radiation resistance and so on. It also has the flexibility and braidability of fibers, so carbon fiber is regarded as a representative of high-tech advanced materials. [0003] Among the many manufacturing proc...

Claims

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Application Information

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IPC IPC(8): D06M15/55D06M15/564D06M15/507D06M13/148D06M101/40
CPCD06M15/55D06M13/148D06M15/507D06M15/564D06M2101/40D06M2200/40
Inventor 刘芳戴慧平郭鹏宗连峰欧阳新峰
Owner ZHONGFU SHENYING CARBON FIBER
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