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

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 problem of low interlayer shear strength and achieve the effect of improved interlayer shear strength and high overall performance

Active Publication Date: 2014-06-11
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 low defect of the interlaminar shear strength of carbon fiber composite materials made with existing carbon fiber sizing agents, the primary purpose of the present invention is to provide a kind of emulsion type carbon fiber sizing agent, which can greatly improve the The interlaminar shear strength of carbon fiber composites ensures high overall performance of carbon fiber composites

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An emulsion type carbon fiber sizing agent is prepared by the following steps:

[0037] Add 0.5g of surfactant (Nippon Emulsifier Company / Nikon 707-SF) into 96.5g of deionized water, stir properly to mix evenly; then add 2g of bisphenol A epoxy resin, 1g of p-phenylene Diphenol, stirred at 1000r / min at 40°C for 100min; then high-shear emulsified at 10,000r / min at 40°C for 35min; finally stirred at 1000r / min at 40°C for 25min to obtain the emulsion Sizing agent for carbon fiber.

[0038] The structure of a surfactant is shown below:

[0039]

[0040] Nippon Emulsifier Company / Nikon 707-SF

Embodiment 2

[0042] An emulsion type carbon fiber sizing agent is prepared by the following steps:

[0043] Add 1.5g of surfactant (0.75g Mitsubishi Rayon Company / BPEO20SON, 0.75g Mitsubishi Rayon Company / SPEO120SON) into 91g of deionized water, stir properly to mix evenly; then add 5g of bisphenol F type epoxy Resin, 2.5g of benzophenone, 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; Stir at a rotating speed for 20 minutes to obtain a sizing agent for emulsion carbon fiber.

[0044] The structure of a surfactant is shown below:

[0045]

[0046] Mitsubishi Rayon Corporation / BPEO20SON

[0047]

[0048] Mitsubishi Rayon Corporation / SPEO120SON

Embodiment 3

[0050] An emulsion type carbon fiber sizing agent is prepared by the following steps:

[0051] Add 3.5g of surfactant (1.5g of polyoxyethylene alkyl ether, 2.0g of polyoxyethylene alkylphenyl ether) into 81.5g of deionized water, stir properly to make it evenly mixed; then add 10g of novolac epoxy resin , 5g modifier (2.5g hydroquinone, 2.5g benzophenone), stirred at 60°C at a speed of 500r / min for 60min; then emulsified at a high speed of 5000r / min at 60°C 15min; finally, stir at 60°C at a speed of 500r / min for 15min to obtain an emulsion-type carbon fiber sizing agent.

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Abstract

The invention discloses a sizing agent for emulsion type carbon fiber, a preparation method and an application of the sizing agent. The sizing agent is prepared by the following raw materials in percentage by weight: 2-40% of epoxy resin, 1-20% of modifier, 0-96.5% of water and 0.5-15% of surfactant. After the carbon fiber sized by the sizing agent is prepared into a carbon fiber polyether-ether-ketone resin matrix composite, due to the fact that the sizing agent comprises modifiers with structural units similar or same to the matrix resin polyether-ether-ketone in the carbon fiber composite, therefore, strong interface bonding force exists between the carbon fiber and the sizing agent layer and between the sizing agent layer and thermoplastic PEEK matrix resin; and the carbon fiber is effectively combined with the thermoplastic PEEK matrix resin through a sizing agent transition connecting layer to form an organic whole. Compared with the existing carbon fiber composite, the interlaminar shear strength is improved by more than 20%, and higher whole performance of the carbon fiber composite is ensured.

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 its preparation method and application. 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, the ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/55D06M13/152D06M13/127C08J5/06C08L61/06C08K9/04C08K7/06D06M101/40
Inventor 雷震宋威蔡彤旻黄险波黄有平谢怀玉
Owner KINGFA SCI & TECH CO LTD