Polyalcohol modified epoxy resin carbon fiber emulsion sizing agent component and preparation method thereof

An epoxy resin emulsion, epoxy resin technology, applied in carbon fiber, fiber processing, textiles and papermaking, etc., can solve problems such as broken filaments, fluff, etc., and achieve less filaments, uniform particle size distribution, pH value stability and excellent high temperature stability

Inactive Publication Date: 2010-11-17
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to meet the market demand for emulsion-type epoxy resin sizing agent products, to solve the problem of preparation of emulsion-type epoxy resin sizing agent, and to solve the problem of fuzzing and broken filaments generated during carbon fiber weaving, the present invention provide

Method used

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  • Polyalcohol modified epoxy resin carbon fiber emulsion sizing agent component and preparation method thereof
  • Polyalcohol modified epoxy resin carbon fiber emulsion sizing agent component and preparation method thereof
  • Polyalcohol modified epoxy resin carbon fiber emulsion sizing agent component and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take polyethylene glycol 1000 as modifier, hydrochloric acid as initiator, and epoxy resin as bisphenol A type epoxy resin. According to the mol ratio of polyethylene glycol and bisphenol A type epoxy resin 1.5: 1, take the raw material, and take the hydrochloric acid quality according to 0.1% of the sum of polyethylene glycol and bisphenol A type epoxy resin quality, then The above-mentioned three kinds of raw materials were mixed, placed in an environment of 60° C., and heated and stirred for 2 hours to obtain a modified epoxy resin. The following reactions occur during mixing:

[0017]

[0018] Add ammonia water dropwise to the above-mentioned modified epoxy resin solution to make the pH of the solution neutral, continue heating and stirring at 60°C for 1 hour, and add deionized water to the above-mentioned neutral solution at a temperature of 70°C, stir and Uniform dispersion makes the solution self-emulsified to obtain a modified epoxy resin emulsion.

[0019]...

Embodiment 2

[0030] Mix polyethylene glycol 1000, bisphenol A epoxy resin, epoxy diluent and initiator ammonium persulfate, place the mixture under 95°C environment, heat and stir for 2 hours; Add deionized water into the neutral solution, stir and disperse evenly to make the solution self-emulsified, and prepare the modified epoxy resin emulsion. Wherein the molar ratio of polyethylene glycol 1000 to bisphenol A epoxy resin is 1:1, and the mass of initiator ammonium persulfate added is 1% of the sum of the mass of polyethylene glycol 1000 and bisphenol A epoxy resin.

[0031] 1. The stable range of PH value of modified epoxy resin emulsion: 1-14;

[0032] 2. High-temperature stability of modified epoxy resin emulsion: keep it in an oven at 70°C for 20 days without breaking the emulsion.

[0033] 3. Solid content: the solid content of sizing agent components can be controlled and formulated;

[0034] 4 wool silk amount: the experimental results are shown in Table 2:

[0035] Table 2 The...

Embodiment 3

[0039] Mix polyethylene glycol 1000, bisphenol A epoxy resin, epoxy diluent and initiator potassium persulfate, place the mixture under 120°C environment, heat and stir for 2 hours; Add deionized water into the neutral solution, stir and disperse evenly to make the solution self-emulsified, and prepare the modified epoxy resin emulsion. . Wherein the molar ratio of polyethylene glycol 1000 to bisphenol A epoxy resin is 1:1.5, and the mass of initiator potassium persulfate added is 1% of the sum of the mass of polyethylene glycol 1000 and epoxy resin.

[0040] 1. The stable range of PH value of modified epoxy resin emulsion: 1-14;

[0041] 2. High-temperature stability of modified epoxy resin emulsion: keep it in an oven at 70°C for 20 days without breaking the emulsion.

[0042] 3. Solid content: the solid content of sizing agent components can be controlled and formulated;

[0043] 4 wool silk amount: the experimental results are shown in Table 3:

[0044] Table 3 wool si...

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Abstract

The invention discloses a polyalcohol modified epoxy resin carbon fiber emulsion sizing agent component and a preparation method thereof. The method comprises the steps of ring-opening the preparing modified epoxy. The modified epoxy resin has hydropathy, can be dissolved in water, and can be prepared into a modified epoxy emulsion under certain conditions. The modified epoxy emulsion is the polyalcohol modified epoxy resin carbon fiber emulsion sizing agent component. A foreign emulsifying agent is added in the preparation process, and the modified epoxy emulsion belongs to a self-emulsifying system without breaking the emulsion and demixing and has controllable and proper viscosity, good standing stability, excellent pH value stability and high-temperature stability. The foreign emulsifying agent does not remain on the fiber after the sizing; and compared with the carbon fiber without being sized, the carbon fiber coated with the sizing agent component has less broken filament amount and good bundling performance, and can ensure that the interface performance is improved because of a structure that one end of the modified epoxy resin is a polyether bond and the other end is an epoxy group.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a polyol-modified epoxy resin carbon fiber emulsion sizing agent component containing a polymer and a preparation method thereof. Background technique [0002] Carbon fiber is a brittle material. In the process of production and processing, it is easy to produce fluff and monofilament breakage through mechanical friction. The presence of hairs prevents the matrix from fully infiltrating the carbon fibers, and easily produces pores in the composite material, which affects the mechanical properties of the composite material, so the carbon fiber must be sized. Sizing is to apply a layer of protective glue on the surface of the surface-treated carbon fiber. It can bundle the fibers, improve the performance of deep processing, reduce the friction between fibers, and improve the connection between them and the matrix. Use aromatic glycidyl ether and aromatic glycid...

Claims

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Application Information

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IPC IPC(8): D06M15/55D06M15/53C08G59/14C08G65/48C08G81/00D06M101/40
Inventor 肇研段跃新丁东刘千罗云烽汤冰洁董安琪
Owner BEIHANG UNIV
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