Composite connecting component for prefabricated sandwich heat insulation wall board and preparation method of composite connecting component

Abstract

The invention belongs to the field of fabricated building envelope construction, and relates to a composite connecting component for a prefabricated sandwich heat insulation wall board and a preparation method of the composite connecting component. The composite connecting component penetrates through an outer blade concrete wall, a heat insulation layer and an inner blade concrete wall. The composite connecting component is composed of a connecting body and a casing pipe. The connecting body is arranged in the casing pipe in a sleeving mode. The connecting body is divided into a connecting body upper section, a connecting body middle section and a connecting body lower section. The connecting body lower section is formed by superposing a plurality of cone tables. The connecting body uppersection is an inverted cone structure extending outwards. The pipe body of one end of the casing pipe obliquely extends outwards. The diameter of the table face of the cone table with the larger diameter of the connecting body lower section is tangent to the edge of the cross section of the connecting body middle section. The core part of the composite connecting component made of fibre reinforced plastics is long glass fiber. The surface of the composite connecting component is ball-shaped moulding compound formed by short-cut glass fiber and resin. The pulling resisting and shearing resisting strength is high, thermal conductivity is low, the corrosion resisting performance is excellent, and the service life is long. The connecting component is simple in structure and is low in weight,and construction is convenient.

Description

technical field [0001] The invention belongs to the field of prefabricated building enclosure construction, and in particular relates to a composite connector for prefabricated sandwich thermal insulation wall panels and a manufacturing method thereof. Background technique [0002] As a part of prefabricated buildings, prefabricated concrete sandwich insulation wall panels have three functions of load bearing, enclosure and heat preservation, and have very broad application prospects. Its main components are the inner and outer leaf concrete slabs and the heat insulation layer in the middle, and the three are combined through connectors to form a stressed whole. In the sandwich insulation wall panel, the main function of the connector is to connect the inner and outer leaf concrete slabs together, and its mechanical performance has a decisive influence on the overall performance of the wall panel. Therefore, the design and research of connectors is a key link in the devel...

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Problems solved by technology

[0003] At present, the connectors used in precast concrete sandwich insulation wall panels mainly include ordinary steel connectors, stainless steel connectors and fiber-reinforced plastic connectors. The coefficient is high, there is a "thermal bridge" effect, and the corrosion resistance is poor, which is likely to cause a safety hazard to the wall; the thermal conductivity of stainless steel connectors is low, and it has good durability, but the cost is high and there are few engineering applications; fiber reinforcement Plastic (FRP) connectors have low thermal conductivity, good corrosion resistance, and high tensile strength, but their shear strength is low, and they are brittle fractures when damaged, and there are certain risks in use

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