Method for preparing transparent flame-retardant epoxy resin by using compound flame retardant

• Main Authors: MENG ZHENHAO, LI SANXI, CHEN QI, DING ZHAN, WU WEIDONG, WANG SONG
• Format: Patent
• Language: Chinese; English
• Published: 20.09.2022
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention relates to a method for preparing transparent flame-retardant epoxy resin by using a compound flame retardant. Comprising the following steps: (1) preparing a flame retardant DP; (2) preparing a modifier DK; (3) preparing a modifier PK; (4) preparing modified montmorillonite; (5) preparation of a compound flame retardant: mixing the prepared DK-MMT and PK-MMT according to a weight ratio to prepare composite organic modified montmorillonite; mixing the prepared flame retardant DP with the composite organic modified montmorillonite in proportion to prepare a compound flame retardant; (6) preparation of transparent flame-retardant epoxy resin: mixing the compound flame retardant and an epoxy compound, and performing ultrasonic treatment to obtain a transparent mixed solution; and adding the transparent mixed solution into a completely molten amine curing agent, and gradually heating and curing the material to finally obtain the transparent flame-retardant epoxy resin containing the compound flame r