Flame-retardant bromocarbon phenolic aldehyde adhesive and preparation method thereof

Abstract

The invention discloses a flame-retardant bromocarbon phenolic aldehyde adhesive and a preparation method thereof. The adhesive comprises the following compositions in percentage by mass: 35.0 to 60.0The invention discloses a flame-retardant bromocarbon phenolic aldehyde adhesive and a preparation method thereof. The adhesive comprises the following compositions in percentage by mass: 35.0 to 60.0percent of bromocarbon phenolic aldehyde resin, 2.0 to 10.0 percent of tritolyl phosphate, 1.0 to 3.0 percent of organic silane coupling agent, 2.0 to 8.0 percent of mica powder, 5.0 to 15.0 percent percent of bromocarbon phenolic aldehyde resin, 2.0 to 10.0 percent of tritolyl phosphate, 1.0 to 3.0 percent of organic silane coupling agent, 2.0 to 8.0 percent of mica powder, 5.0 to 15.0 percentof glass fiber, and 25.0 to 35.0 percent of solvent. The preparation method comprises the following steps: placing the bromocarbon phenolic aldehyde resin, the tritolyl phosphate, the organic silane cof glass fiber, and 25.0 to 35.0 percent of solvent. The preparation method comprises the following steps: placing the bromocarbon phenolic aldehyde resin, the tritolyl phosphate, the organic silane coupling agent, the mica powder, the glass fiber, and the solvent into an enamel jar; dispersing the mixture at high speed for 3 to 5 minutes; grinding and dispersing the mixture for 2 times in a coneoupling agent, the mica powder, the glass fiber, and the solvent into an enamel jar; dispersing the mixture at high speed for 3 to 5 minutes; grinding and dispersing the mixture for 2 times in a conemill; and obtaining the flame-retardant bromocarbon phenolic aldehyde adhesive.mill; and obtaining the flame-retardant bromocarbon phenolic aldehyde adhesive.

Description

technical field [0001] The invention relates to a phenolic adhesive, in particular to a method for preparing a flame-retardant bromocarbon phenolic adhesive. Background technique [0002] In the foundry field, the cores and molds used to manufacture metal castings are prepared from adhesives and foundry sands (such as silica sand, chrome sand, zircon sand), and the adhesives include phenolic resins, epoxy resins, polyurethane resins, and other types. Phenolic resin, as the earliest synthetic resin variety used in the adhesive industry, has been widely used in the foundry industry in recent years. The cores and molds made of it have high strength, are not easy to deform, have accurate shape dimensions, good sand falling performance of castings, and smooth surfaces. high merit. [0003] Patent CN1583926A discloses a furfural-octyl alcohol modified phenolic binder and its production method. It has the advantages of simple production process and low production cost. The physica...

AI Technical Summary

Problems solved by technology

[0006] The base resin in the existing adhesives often does not have the characteristics of high temperature flame retardancy, which limits the application range of casting cores and molds