A kind of prefabricated concrete sandwich insulation exterior wall panel and preparation method thereof

Abstract

The invention relates to a prefabricated concrete sandwich thermal insulation exterior wall panel, which belongs to the technical field of thermal insulation exterior wall panels, and includes an inner leaf concrete wall panel, an airgel fiber felt, an outer leaf concrete wall panel, and a plurality of connectors. The connection core made of carbon fiber material, the connection sleeve made of glass fiber reinforced plastic material, the connection sleeve is sleeved on the outer peripheral surface of the connection core and has an interference fit with it, and one end of the connection core along its length direction is provided with a The feed hole, the connecting core is set on the outer peripheral surface of the connecting sleeve and has multiple discharge holes along its circumferential direction. The discharge hole and the feed hole are connected. The side wall of the connecting sleeve is provided with a A perforation that connects the material holes. The prefabricated concrete sandwich thermal insulation exterior wall panel adopts airgel fiber felt, which has good fireproof performance, and utilizes the mutual cooperation between the connecting core body and the connecting sleeve to reduce the occurrence of "heat" at the joints of the thermal insulation exterior wall panel. The bridge effect improves the thermal insulation effect of the thermal insulation exterior wall panels.

Description

technical field [0001] The invention relates to the technical field of thermal insulation external wall panels, in particular to a prefabricated concrete sandwich thermal insulation external wall panel and a preparation method thereof. Background technique [0002] As a green energy-saving building with ultra-low energy consumption and high comfort, passive houses are widely used in civil and public buildings and other fields. Passive houses have become a sharp tool for people to cope with global climate change and energy conservation and emission reduction, and a new direction for the development of building energy conservation in the future. Among them, prefabricated concrete sandwich insulation exterior wall panels are one of the important energy-saving measures for passive houses. [0003] At present, prefabricated concrete sandwich insulation exterior wall panels can meet the requirements of heating and power supply by using solar energy, and have good effects in terms ...

AI Technical Summary

Problems solved by technology

Prefabricated concrete sandwich insulation exterior wall panels generally use polystyrene boards and extruded plastic boards as insulation materials. Although polystyrene boards and extruded plastic boards have good thermal insulation effects, they have low fire protection ratings and are flammable at high temperatures. Burning will emit large amount of toxic gas

Precast concrete sandwich insulation exterior wall panels generally use steel bars as connectors. Although steel bars have strong strength, their thermal conductivity is large, and there is a "thermal bridge" effect, which affects the thermal insulation effect of precast concrete sandwich insulation exterior wall panels.

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