Preparation method of carbon fiber paper based on non-woven felt

• Main Authors: XIE BO, SHI JUNJIE, YAN BING, SHENG JIANGFENG, WANG QIUZE
• Format: Patent
• Language: Chinese; English
• Published: 27.02.2024
• Subjects: FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; IMPREGNATING OR COATING OF PAPER; LAUNDERING; 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; TREATMENT OF TEXTILES OR THE LIKE

The invention discloses a preparation method of carbon fiber paper based on non-woven felts.The preparation method comprises the following steps that S1, two kinds of non-woven felts with different equivalent apertures are selected as raw materials, and the two kinds of non-woven felts are laid into a double-layer structure; s2, respectively coating conductive resin slurry on the two layers of non-woven felts and drying; s3, carrying out hot-press bonding on the non-woven felt coated with the conductive resin slurry; and S4, carbonizing and graphitizing the bonded non-woven felt to obtain the carbon fiber paper. According to the method, the upper and lower layers of non-woven felts with different equivalent apertures are coated with conductive resin slurry with different resin contents, drying and hot pressing are performed at different temperatures to obtain carbon paper preforms with different resin curing degrees, and then the carbon fiber paper with gradient porosity is obtained after carbonization and gr