Carbon fiber tube It is a kind of high-performance composite material commonly used to make a series of products such as carbon fiber fishing rod, exhibition frame and scaffold. For carbon fiber tube, its production and processing is a very important process. Many people ask us how Nantong Zhongding carbon fiber tube is processed and shaped? To solve this problem, we should first understand the characteristics of carbon fiber tubes,
Carbon fiber tubes have the advantages of high strength, long service life, corrosion resistance, light weight, low density, etc., and are widely used in kites, aviation model planes, light brackets, PC equipment spindles, etching machines, medical equipment, sports equipment and other mechanical equipment. It has a series of excellent properties such as dimensional stability, electrical conductivity, thermal conductivity, small coefficient of thermal expansion, self lubrication, energy absorption and shock resistance. It has high specific modulus, fatigue resistance, creep resistance, high temperature resistance, corrosion resistance, wear resistance, etc.
In practical engineering, the carbon fiber material used for reinforcement is mainly carbon fiber cloth. The carbon fiber cloth is mainly used to share the stress of reinforcement, and its main role is to improve the tensile strength and deformation resistance of structural members, and reduce the development of cracks. The application of carbon fiber cloth reinforcement technology in concrete structures has been relatively mature, mainly focusing on the following aspects.
(1) Improve the shear bearing capacity of the structure
The contribution of carbon fiber cloth to the shear resistance of members is similar to that of stirrups, which bear the shear force together with concrete. In addition, the carbon fiber cloth also has a restraining effect on the core concrete, and can bear the tensile stress, prevent the main reinforcement from yielding prematurely, and inhibit the emergence and development of shear cracks. Therefore, carbon fiber cloth can significantly improve the shear capacity of reinforced concrete members, and enhance the deformation capacity of members.
(2) Improve the bending bearing capacity of the structure
Due to the high tensile strength of carbon fiber cloth, carbon fiber cloth can be pasted on the tensile surface of the component to bear the tensile stress together with the concrete, so as to improve the flexural bearing capacity of the component and achieve the purpose of reinforcement. After pasting carbon fiber cloth, the flexural bearing capacity of flexural members is significantly improved, the crack development is effectively suppressed, and the deformation capacity and ductility of members are significantly improved. The main factors affecting the effect of flexural strengthening are the material properties of carbon fiber sheet, the width and number of layers of carbon fiber sheet, the quality of adhesive, the quality of pasting, the loading conditions of the members before strengthening, the ratio of longitudinal reinforcement, the section size of the members, etc.
From understanding the basis and application of carbon fiber solutions to understanding the latest progress of the industry and grasping the future development, it is an opportunity that cannot be missed.
Carbon fiber composite core is composed of reinforced fiber and high-performance epoxy resin system. Carbon fiber and glass fiber are the main reinforcement fibers currently used. The carbon fiber is located in the core layer of the composite core rod, which mainly provides the high strength mechanical properties of the rod and the properties of low density and low expansion coefficient of the material; The glass fiber is in the outer layer of the rod, ensuring the overall toughness and insulation of the rod. The epoxy resin system can organically bond the reinforcing fibers together, which is the decisive factor for the processability, heat resistance and weather resistance of the composite core rod, and also affects other thermodynamic and mechanical properties. It should be said that the most critical technology of the entire composite core conductor is the development of the epoxy system formula and the formulation of the corresponding pultrusion process parameters.
