Prefabricated foamed lightweight insulation mineral polymer wallboard and preparation method thereof

Abstract

The invention discloses a prefabricated foamed lightweight insulation mineral polymer wallboard and a preparation method thereof. The wallboard comprises the following raw materials (by weight): 200-500 parts of fly ash, 5-50 parts of mineral powder, 1-50 parts of metakaolin, 100-300 parts of water glass, 5-50 parts of caustic soda, 1-30 parts of a foaming agent, 1-300 parts of a water-proofing agent, 1-20 parts of fiber, 5-100 parts of water, and reinforcing mesh slice. The reinforcing mesh slice is laid in a mold, the above raw materials are fully stirred to prepare slurry and the slurry ispoured into the mold pulped; and after solidification at room temperature, steam curing is conducted at 40-95 DEG C for 3-24 hours to prepare a mineral polymer foamed lightweight high-strength self-insulation wallboard. The product has the characteristics of light weight, high strength, heat preservation, fireproofness, durability and one-time molding of large board. The method can be convenientlyrealized in the traditional prefabricated concrete wallboard production line, and is particularly suitable for external wallboards for steel structure buildings.

Description

technical field [0001] The invention relates to a prefabricated foamed mineral polymer wallboard and a preparation method thereof, in particular to a prefabricated foamed light-weight high-strength thermal insulation mineral-polymer wallboard and a preparation method thereof, belonging to the field of construction for the preparation of prefabricated components of light-weight high-strength wallboards technology field. Background technique [0002] With the development of prefabricated housing industrialization technology, prefabricated concrete wall panels have become one of the main components of prefabricated housing. Generally, concrete materials are used to prepare load-bearing and thermal insulation PC sandwich composite wall panels, which are mostly used for load-bearing members of shear walls, and their unit area density is generally greater than 600kg / m 2 . However, for steel structure buildings, light-weight, heat-insulating, and decorative external panels are re...

AI Technical Summary

Problems solved by technology

However, for steel structure buildings, light-weight, thermal insulation, and decorative external panels are required. Prefabricated concrete components cannot meet the design requirements due to the excessive weight per unit area, and there is an urgent need for new lightweight external wall panel maintenance materials.

At present, steel structure buildings generally use ALC fly ash steam-cured board, cement EPS board, cement foam board and other slabs. The thermal insulation performance of this type of material can meet the requirements, but due to the low compressive strength and flexural strength, it cannot meet the structural requirements. , can only be used as a partition wall panel, or as an exterior wall panel embedded in the exterior wall structure, and cannot be used alone as a whole wall panel integrating structure and heat preservation

Mineral polymer (geopolymer) materials are also used to replace cement cementitious materials and mix polystyrene particles to prepare lightweight boards to form mineral polymer EPS boards, which also have the above limitations and cannot be used for exterior wall hanging panels.