Nano Single Layer Tungsten Disulfide Reinforced Carbon Fiber Sizing Agent

Carbon fiber is known as a new inorganic material. It has a series of excellent properties, such as high specific strength, high specific modulus, high temperature resistance, corrosion resistance, fatigue resistance, radiation resistance, conductivity, heat transfer, shock absorption, noise reduction and so on. As a typical high performance fiber, carbon fiber is widely used as a reinforcing fiber of advanced resin matrix composites. At present, its application field is mainly in Aeronautics and aeronautics, mainly because it can greatly reduce the weight of structural prefabrication and further improve the technical performance.

The preparation of sizing agent with nano tungsten disulfide can solve the problem of interface performance between carbon fibers and matrix. It has good stability and can effectively improve the processing performance of carbon fibers. The preparation method is simple and low cost. It can also be applied to different kinds of resin matrix by changing the composition of sizing agent. The preparation process of nano single layer tungsten disulfide reinforced carbon fiber sizing agent is as follows:

Step (1): Disperse the organic resin in the organic solvent at 35 - 100 ℃ to form the organic resin solution. The quality of the organic solvent is 20 - 200% of that of the organic resin.

Steps (2): when the organic resin solution is reduced to room temperature, the emulsifier, dispersant and deionized water are mixed evenly and then added into the organic resin solution. The emulsifying agent added is the 1-5% of the organic resin. The dispersing agent added is the 0.1-1% of the organic resin, adding deionized water to the mixed system and the solid content of 30-50% is obtained, and the organic resin emulsion is obtained.

Step (3): the compatible modified nanoscale two tungsten sulfide dispersions were slowly added into the organic resin emulsion, ultrasonic dispersion, and then continued to add deionized water to the system solid content of 25-35%, to produce a compatible modified nano layer of two tungsten sulfide sizing agent.

The prepared compatible modified nano-sheet tungsten disulfide can protect carbon fibers and improve the mechanical properties of the composites. This kind of functional sizing agent can optimize the interface and macroscopic properties of carbon fibers and their composites, which is of great significance to the upgrading of carbon fibre composites industry.

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