High-bonding cracking-resistant wallboard

Abstract

The invention discloses a high-bonding cracking-resistant wallboard which comprises a base layer, a bonding layer, a fireproof layer, a waterproof layer, an emulsion layer and a decorative coating arranged sequentially from inside to outside, wherein the bonding layer is prepared by using an aqueous adhesive; the aqueous adhesive comprises the raw materials in parts by weight: 20-30 parts of bisphenol F epoxy resin, 5-10 parts of hydrogenated bisphenol A epoxy resin, 20-30 parts of modified phenolic resin, 0.5-1.5 parts of a curing agent, 1-2 parts of a silane coupling agent KH-550, 1.2-1.5 parts of a diluent, 1-3 parts of a softener, 10-15 parts of 2-ethyl methacrylate, 5-12 parts of tricresyl phosphate, 1-3 parts of trimethylolethane, 10-12 parts of propylene glycol, 1-4 parts of xylitol, 4-8 parts of short fiber and 20-30 parts of water. Even if in a humid environment, the bonding property of the wallboard is extremely excellent, and the wallboard is prevented from deforming and cracking as a result of different amounts of expansion and contraction.

Description

technical field [0001] The invention relates to the technical field of wallboards, in particular to a highly bonded and crack-resistant wallboard. Background technique [0002] Common decorative wallboards are mostly directly glued to the wall with air nails or by glue. This kind of wallboard is greatly affected by the ambient temperature. The thermal expansion coefficients of the internal materials of the wallboard and between the wallboard and the wall surface are different. When the ambient temperature changes, the deformation and cracking of the wall panels are likely to occur due to different expansion and contraction, which not only affects the appearance of the wall panels but also reduces the overall protective effect of the wall panels. As people improve their living environment, the protection of the wall panels Adhesive performance requirements are also gradually increasing. Among them, water-based adhesives are classified as very important adhesives. Due to their...

AI Technical Summary

Problems solved by technology

[0002] Common decorative wallboards are mostly directly glued to the wall with air nails or by glue. This kind of wallboard is greatly affected by the ambient temperature. The thermal expansion coefficients of the internal materials of the wallboard and between the wallboard and the wall surface are different. When the ambient temperature changes, the deformation and cracking of the wall panels are likely to occur due to different expansion and contraction, which not only affects the appearance of the wall panels but also reduces the overall protective effect of the wall panels. As people improve their living environment, the protection of the wall panels Adhesive performance requirements are also gradually increasing. Among them, water-based adhesives are classified as very important adhesives. Due to their poor adhesion in water-based environments, their application in humid environments is limited, which in turn affects the overall performance of the product.