Preparation method of efficient flame-retardant phosphorus-containing benzoxazine epoxy resin copolymer

• Main Authors: KONG QINGHONG, ZHAO HAN, LIU HONG, CHEN MINGYI, LI ZHENGSHAN
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention belongs to the field of new materials, and discloses an efficient flame-retardant phosphorus-containing benzoxazine epoxy resin copolymer. A phosphorus-containing benzoxazine polymer flame retardant, an epoxy monomer and DDM are compounded to prepare the phosphorus-containing benzoxazine epoxy resin copolymer, when the addition amount of phosphorus-containing benzoxazine resin (VDA-BOZ) reaches 3 wt%, the oxygen index is increased to 28.0 and reaches the V-0 level, and the residual amount reaches 26.3% at the temperature of 700 DEG C, and when the addition amount reaches 5 wt%, the oxygen index reaches 32.8 and the residual amount reaches 38.2% at the temperature of 700 DEG C. The VDA-BOZ is used as the flame retardant, the flame retardant effect in the epoxy resin is good, and meanwhile, the thermal performance of the epoxy resin is improved. 本发明属于新材料领域，公开了一种高效阻燃含磷苯并噁嗪环氧树脂共聚物。将含磷苯并噁嗪聚合物阻燃剂、环氧单体和DDM复合制备含磷苯并噁嗪环氧树脂共聚物，当含磷苯并噁嗪树脂(VDA-BOZ)添加量达到3wt％，氧指数提高到28.0，达到V-0级别，700℃时残余量达到26.3％，当添加量达到5wt％，氧指数达到3