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Sizing agent for emulsion type carbon fibers, a method for preparing the same and application

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
GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
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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 fibers, a method for preparing the same and application
  • Sizing agent for emulsion type carbon fibers, a method for preparing the same and application
  • Sizing agent for emulsion type carbon fibers, a method for preparing the same and application

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 well; then add 2g of bisphenol A epoxy resin, 1g of dicarbonate Methyl ester, 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 diphenyl carbonate, 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 of carbonate (2.5g dimethyl carbonate, 2.5g diphenyl carbonate), stirred at 60°C at a speed of 500r / min for 60min; then at 60°C at a speed of 5000r / min for high-speed shear emulsification for 15min ; Finally, stir at a speed of 500r / min for 15min at 60°C to obtain a sizing agent for emulsion-type carbon fibers.

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Abstract

The invention discloses sizing agent for emulsion type carbon fibers, a method for preparing the same and application, wherein the sizing agent is prepared by from 2 to 40% of epoxy resin, from 1 to 20% of carbonic ester, from 0 to 96.5% of water and from 0.5 to 15% of surface active agent. Because the sizing agent contains the carbonic ester, the carbonic ester and polycarbonate matrix resin in a carbon fiber composite have the similar or the same structure units after a carbon fiber polycarbonate (PC) polymer matrix composite is prepared by carbon fibers which are sized by the sizing agent, the carbon fibers and a sizing agent layer and the sizing agent layer and thermoplastic PC resins have strong interface bonding force, and the carbon fibers and the thermoplastic PC resins are effectively combined through a sizing agent transition connection layer to form an organic whole. The sizing agent for the emulsion type carbon fibers increases more than 20% of shear strength between existing carbon fiber composite layers, and guarantees the carbon fiber composite to have high whole 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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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/55D06M13/232C08J5/06C08L69/00C08K9/06C08K7/06D06M101/40
Inventor 雷震宋威蔡彤旻黄险波黄有平谢怀玉
Owner GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV