Processing method of mixed fiber extruded sectional materials for civil engineering

Abstract

A fibre mixture section for civil engineering is prepared from carbon fibres, glass fibres, epoxyvinyl modified resin and powdered coal ash through proportional mixing, and drawing while extruding at 120-140 deg.C and 0.5-1.5 m / s. Its advantages are high strength and antishearing power, and low cost.

Description

technical field [0001] The invention relates to a fiber pultrusion profile and a processing method for civil engineering, in particular to a mixed fiber pultrusion profile and a processing method. Background technique [0002] Before the present invention, a large number of resin-based composite materials were used in civil engineering, such as FRP, and its fiber material was mainly pure glass fiber. The profiles produced were light in weight, high in strength, and superior in corrosion resistance. Defects such as poor anti-cutting ability between layers limit its further application in the field of civil engineering technology, especially modern large-scale civil engineering requires profiles to have stronger bearing capacity and higher rigidity, otherwise it cannot be completed and guaranteed. Civil engineering and safe operation; With the development of science and technology, the field of composite profiles has also been greatly developed. Many resins and fiber materials...

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Problems solved by technology

[0002] Before the present invention, a large number of resin-based composite materials, such as FRP, were used in civil engineering. The fiber material was mainly pure glass fiber. Defects such as poor anti-cutting ability between layers limit its further application in the field of civil engineering technology, especially modern large-scale civil engineering requires profiles to have stronger bearing capacity and higher rigidity, otherwise it cannot be completed and guaranteed. Civil engineering and safe operation; With the development of science and technology, the field of composite profiles has also been greatly developed. Many resins and fiber materials with different properties have been developed and produced at home and abroad. For example, in the field of fibers, there are carbon fibers, Kevlar fiber, etc., epoxy resin, epoxy vinyl modified resin, etc. in the resin field; Among them, carbon fiber composite materials not only have higher strength and lower density than FRP composite materials, but also have high The elastic modulus of carbon steel is equivalent to that of high carbon steel, and some of them are even 2 times or more than that of high carbon steel. For example, the tensile modulus of M601 carbon fiber developed by Toray Corporation of Japan has reached 588GPa, which can improve the rigidity and strength of its structure more effectively than FRP. Reduce the weight of the structure itself, but due to the high price of carbon fiber at present, about 200,000 yuan per square meter, it is not acceptable for general civil engineering, thus limiting its wide application and research in civil engineering

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