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Sizing agent for emulsion type carbon fiber, preparation method and application thereof

An emulsion type carbon fiber and carbon fiber technology, which is applied in the fields of carbon fiber, fiber treatment, textiles and papermaking, etc., can solve the problems of low interlayer shear strength, poor storage and use stability of carbon fiber sizing agent, etc., and achieve interlayer shear Effect of increased strength, improved storage stability, and high overall performance

Active Publication Date: 2014-09-10
KINGFA SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defect that the interlaminar shear strength of the carbon fiber composite material made with the existing carbon fiber sizing agent is small, and overcome the problem of poor storage and use stability of the existing carbon fiber sizing agent, the primary purpose of the present invention is to provide An emulsion type carbon fiber sizing agent, the sizing agent of the present invention can greatly improve the interlaminar shear strength of carbon fiber composite materials, and ensure that the carbon fiber composite materials have higher overall performance; and the sizing agent of the present invention can be stored and used There will be no emulsion stratification and uneven distribution of emulsion concentration during the process, and it can be stirred relatively quickly during use and transportation, which is convenient to use

Method used

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  • Sizing agent for emulsion type carbon fiber, preparation method and application thereof
  • Sizing agent for emulsion type carbon fiber, preparation method and application thereof
  • Sizing agent for emulsion type carbon fiber, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] An emulsion type carbon fiber sizing agent is prepared by the following steps:

[0041] Add 0.5g of surfactant (Japan Emulsifier Company / Nikon 707-SF) into 96.4g of deionized water, stir properly to mix well; then add 2g of bisphenol A epoxy resin, 1g of diphenyl Ether, stirred at 1000r / min at 40°C for 100min; then at 40°C at 10,000r / min for high-speed shear emulsification for 35min; finally added 0.1g of ammonium chloride, at 40°C at 1000r / min Stir at a rotating speed for 25 minutes to obtain a sizing agent for emulsion-type carbon fibers.

[0042] The structure of a surfactant is shown below:

[0043]

[0044] Nippon Emulsifier Company / Nikon 707-SF

Embodiment 2

[0046]An emulsion type carbon fiber sizing agent is prepared by the following steps:

[0047] (1) Add 2.5g of diphenyl sulfone into 2.5g of ethanol, stir properly at 40°C to dissolve it for later use;

[0048] (2) Add 1.5g of surfactant (0.75g of Mitsubishi Rayon Company / BPEO20SON, 0.75g of Mitsubishi Rayon Company / SPEO120SON) into 90.7g of deionized water, stir properly to make it evenly mixed; then add 5g of bisphenol F-type epoxy resin, ethanol solution containing 2.5g of diphenyl sulfone, stirred at 60°C at a speed of 750r / min for 80min; then at 60°C at a speed of 7500r / min for high-speed shear emulsification for 25min; finally added 0.3g ammonium chloride, stirred at 60°C at a speed of 750r / min for 20min to obtain an emulsion-type carbon fiber sizing agent.

[0049] The structure of a surfactant is shown below:

[0050]

[0051] Mitsubishi Rayon Corporation / BPEO20SON

[0052]

[0053] Mitsubishi Rayon Corporation / SPEO120SON

Embodiment 3

[0055] An emulsion type carbon fiber sizing agent is prepared by the following steps:

[0056] (1) Add 2.5g of diphenyl sulfone into 2.5g of ethanol, stir properly at 40°C to dissolve it for later use;

[0057] (2) Add 3.5g of surfactant (1.5g of polyoxyethylene alkyl ether, 2.0g of polyoxyethylene alkylphenyl ether) into 80.9g of deionized water, stir properly to mix evenly; then add 10g of phenolic aldehyde Epoxy resin, 5g modifier (2.5g diphenyl ether, ethanol solution containing 2.5g diphenyl sulfone), stirred at 500r / min at 60°C for 60min; then at 60°C at 5000r / min High speed shear emulsification for 15 minutes; finally add 0.6g of ammonium chloride, stir at 60°C at a speed of 500r / min for 15 minutes to obtain an emulsion carbon fiber sizing agent.

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Abstract

The invention discloses a sizing agent for an emulsion type carbon fiber, a preparation method and an application thereof. The sizing agent is prepared by 2-40 percent of epoxy resin, 1-20 percent of modifying agent, 0-96.5 percent of water, 0.5-15 percent of surface active agent and 0.1-2.0 percent of inorganic ammonium salt. The sizing agent, the preparation method and the application thereof have the beneficial effects that the modifying agent is contained in the sizing agent and has a similar or identical structure unit with matrix resin in a carbon fiber composite material, therefore, stronger interface bonding force is formed between the carbon fiber and a sizing agent layer and between the sizing agent layer and the thermoplastic matrix resin; the carbon fiber is effectively combined with the thermoplastic matrix resin through a sizing agent transitional connection layer to form an organic whole body; in addition, under the synergistic effect of stabilizer ammonium chloride, compared with the interlaminar shear strength of the existing carbon fiber composite material, the interlaminar shear strength of the carbon fiber composite material is improved by above 30 percent, so that higher whole performance of the carbon fiber composite material is ensured; and as the stabilizer inorganic ammonium salt is contained, the storage stability of the sizing agent is greatly improved, and delamination and demulsification can not occur during the use process.

Description

technical field [0001] The invention belongs to the field of carbon fiber production, and in particular relates to an emulsion-type carbon fiber sizing agent and a preparation method and application thereof. Background technique [0002] In carbon fiber reinforced composite materials, a sizing agent is used as a transition layer between the reinforced carbon fiber and the matrix resin. The sizing agent can well connect the carbon fiber and the matrix resin, making the carbon fiber reinforced composite material a Overall, with strong overall performance. [0003] Patent CN1318686C discloses a sizing agent for carbon fibers, the sizing agent for carbon fibers contains, (A) a compound having at least one epoxy group in the molecule, (B) an anionic surfactant with ammonium ions as counter ions, ( C) Nonionic surfactants. [0004] However, in the thermoplastic resin composite material (CFRTP) made of carbon fiber after sizing with the above-mentioned carbon fiber sizing agent, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/55D06M13/165D06M13/268D06M11/13D06M11/56D06M11/65C08J5/06C08L81/06C08K9/04C08K9/02C08K7/06D06M101/40
Inventor 雷震黄险波蔡彤旻宋威黄有平谢怀玉
Owner KINGFA SCI & TECH CO LTD