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Sizing agent for emulsion type carbon filter and 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 problem of low interlayer shear strength and achieve the effect of improved interlayer shear strength and high overall performance

Active Publication Date: 2013-05-15
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 filter and preparation method and application thereof
  • Sizing agent for emulsion type carbon filter and preparation method and application thereof
  • Sizing agent for emulsion type carbon filter and preparation method and application thereof

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 (Japan Emulsifier Company / Nikon 707-SF) into 96.5g of deionized water, stir properly to mix evenly; then add 2g of bisphenol A epoxy resin and 1g of formamide , stirring at 1000r / min at 40°C for 100min; then high-speed shear emulsification at 10,000r / min at 40°C for 35min; finally stirring at 1000r / min at 40°C for 25min to obtain the emulsion carbon fiber Use sizing agent.

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

[0044] (2) 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 glutarimide, stirred at 60°C at a speed of 750r / min for 80min; Stir at a speed of 750r / min for 20min to obtain a sizing agent for emulsion carbon fiber.

[0045] The structure of a surfactant is shown below:

[0046]

[0047] Mitsubishi Rayon Corporation / BPEO20SON

[0048]

[0049] Mitsubishi Rayon Corporation / SPEO120SON

Embodiment 3

[0051] An emulsion type carbon fiber sizing agent is prepared by the following steps:

[0052] (1) Add 2.5g of diphenyl sulfone into 2.5g of ethanol, stir properly at 40°C to dissolve it for later use;

[0053] (2) 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 mix evenly; then add 10g of phenolic Epoxy resin, 5g modifier (2.5g formamide, 2.5g glutarimide), stirred at 500r / min at 60°C for 60min; then sheared at 5000r / min at 60°C Cut and emulsify for 15 minutes; finally stir at 60°C at a speed of 500r / min for 15 minutes to obtain an emulsion-type carbon fiber sizing agent.

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Abstract

The invention discloses a sizing agent for emulsion type carbon filter and a preparation method and application thereof. The sizing agent is prepared by 2-40% of epoxy resin, 1-20% of modifiers, 0-96.5% of water and 0.5-15% of surfactant. After the carbon fiber sized by the sizing agent is prepared into a polyamide, polyimide or polyetherimide resin-based carbon fiber composite material, as the sizing agent comprises the modifiers which have similar or same structural units with matrix resin in the carbon fiber composite material, stronger interface bonding forces exist 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 connecting layer so as to form an organic whole; and compared with current carbon fiber composite material, the interlaminar shear strength is improved by over 20%, so that the carbon fiber composite material is higher in integral performance.

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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IPC IPC(8): D06M15/55D06M13/402D06M13/355C08J5/06C08L77/00C08L79/08C08K9/04C08K7/06D06M101/40
Inventor 雷震黄险波蔡彤旻宋威黄有平谢怀玉
Owner KINGFA SCI & TECH CO LTD
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