Poly (p-phenylene benzobisoxazole) fiber paper-based material for high-temperature-resistant honeycomb core material and preparation method of poly (p-phenylene benzobisoxazole) fiber paper-based material

• Main Authors: GUO LILI, LIU PING, YE XIAOWEN, JIANG MING, WANG ZHIXIN, WANG YUYANG
• Format: Patent
• Language: Chinese; English
• Published: 30.04.2021
• Subjects: IMPREGNATING OR COATING OF PAPER; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; TEXTILES; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G

The invention discloses a poly (p-phenylene benzobisoxazole) fiber paper-based material for a high-temperature-resistant honeycomb core material and a preparation method of the poly (p-phenylene benzobisoxazole) fiber paper-based material. The preparation method specifically comprises the following steps: pretreating PBO chopped fibers; dispersing the pretreated PBO fibers and meta-aramid chopped fibers together, and mixing the dispersed PBO fibers with the dispersed meta-aramid fibrids for papermaking; and carrying out wet molding, squeezing, drying to obtain PBO fiber paper base paper, and carrying out high-temperature calendaring finishing to obtain the poly (p-phenylene benzobisoxazole) fiber paper-based material for the high-temperature-resistant honeycomb material. According to the preparation method of the poly (p-phenylene benzobisoxazole) fiber paper-based material, provided by the invention, the paper-based material with excellent temperature resistance, flame retardance and mechanical strength is p