Epoxy adhesive for preparing assembled prefabricated wallboard mold and preparation method of epoxy adhesive

Abstract

The invention provides an epoxy adhesive for preparing an assembled prefabricated wallboard mold and a preparation method of the epoxy adhesive. The epoxy adhesive is prepared from the following raw materials in parts by weight: 35 to 40 parts of bisphenol A epoxy resin E51; 5 to 10 parts of glycidyl ether; 0.1 to 0.3 part of a defoaming agent; 0.1 to 0.3 part of coupling agent, 50 to 60 parts ofactive silica powder, 5 to 10 parts of aluminum hydroxide, 30 to 40 parts of 4 '-diaminodiphenylmethane, 20 to 30 parts of propylene carbonate, 10 to 20 parts of Mannich amine, 10 to 40 parts of polyamide, 0.1 to 0.3 part of dibutyltin dilaurate and 0.1 to 0.5 part of thixotropic agent. The assembled building prefabricated wallboard mold manufactured through the scheme is high in compressive strength, high in temperature resistance, good in toughness, high in abrasion resistance, high in scratch resistance, high in surface smoothness, high in reuse rate and good in durability. The number of assembled building prefabricated wallboard molds manufactured through one mold is increased by multiple times, the manufacturing cost of each assembled building prefabricated wallboard is reduced to onefourth of the original manufacturing cost, and great economic benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to an epoxy adhesive for preparing assembled prefabricated wallboard molds and a preparation method thereof. Background technique [0002] With the rapid progress of urbanization in my country, the demand for housing renovation, housing reconstruction and new construction is increasing. Modular prefabricated buildings have the characteristics of energy saving, water saving, land saving, material saving and environmental protection. [0003] The mass production of prefabricated wall panels greatly improves production efficiency, reduces energy savings in all aspects, and has great economic benefits. Because prefabricated wall panels require different patterns and sizes, the mass production of prefabricated wall panels requires a large number of molds, so the importance of mold molding materials is highlighted. [0004] The current mold molding materials generally use unsaturated r...

AI Technical Summary

Problems solved by technology

[0004] The current mold molding materials generally use unsaturated resin as the molding material. The unsaturated resin contains a large amount of solvent and has a strong smell. The volatile substance (styrene) accounts for 25-30%. The curing agent and accelerator used are all Peroxides and heavy metals are flammable and explosive, which increases the risk factor during storage, transportation and use, and poses varying degrees of threats to the health of operators and the protection of the environment. In addition, the current mold The molding material is brittle and easily broken

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