Fiber reinforced modified foam cement thermal insulation board and preparation process thereof

Abstract

The invention discloses a fiber reinforced modified foam cement thermal insulation board and a preparation process thereof. The fiber reinforced modified foam cement thermal insulation board uses a modified foam cement thermal insulation board as a thermal insulation core material, wherein alkali-resistant fiberglass cloth is attached to the upper surface and the lower surface of the modified foam cement thermal insulation board, polymer glue is applied onto the upper surface and the lower surface of the foam cement thermal insulation board through spray coating, roller coating, dip coating or scraping so as to integrate the alkali fiberglass cloth with the modified foam cement thermal insulation board to prepare a novel light cement-based inorganic thermal insulation board. The novel light cement-based inorganic thermal insulation board has the advantages of high strength, high toughness, low water absorption rate, low heat conduction coefficient, good thermal insulation effect, small drying shrinkage value, high adhesiveness, high integrity, good anti-vibration and anti-impact performance, A-level fire-proof performance, long service life as a building and the like. A used polycarboxylate superplasticizer modified graphene can disperse in cement paste uniformly and steadily, so that the problems of agglomeration, non-thorough disperse and the like in an existing graphene adding manner are solved.

Description

technical field [0001] The invention relates to a building thermal insulation material, in particular to a fiber-reinforced modified foamed cement thermal insulation board and a preparation process thereof. Background technique [0002] In the past ten years, my country has undergone earth-shaking changes in the construction of infrastructure. The current growth rate has slowed down, but in general, the construction volume is still objective, especially in bridges, railways, nuclear power, highways, Hydropower, port, marine and other major engineering projects. Cement-based composite materials represented by cement mortar and concrete have become the most widely used and most successful materials in society at home and abroad because of their excellent overall performance, good plasticity, controllable strength, convenient material acquisition and low price. Structural Engineering Materials. The performance characteristics of cement concrete make it extremely suitable for a...

AI Technical Summary

Problems solved by technology

However, the high brittleness of cement materials and the performance defects caused by gaps and penetration are common in cement-based composite materials. These shortcomings also cause the mechanical properties to decline and the service life to be shortened after completion.

Ordinary cement-based materials often produce a large number of cracks in engineering use due to their low tensile strength and poor toughness, which affects the safety and durability of engineering structures.