种耐烧蚀硼酸苯酯改性高邻位酚醛纤维的制备方法

• Format: Patent
• Language: Chinese
• Published: 27.03.2018
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS BASED THEREON; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; METALLURGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; ORGANIC MACROMOLECULAR COMPOUNDS; SPINNING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP

本发明公开了种耐烧蚀硼酸苯酯改性高邻位酚醛纤维的制备方法，将酚类化合物、硼酸、甲醇和柠檬酸混合反应得到固态的硼酸苯酯，在酚类化合物中加入硼酸苯酯、多聚甲醛和柠檬酸钛，回流反应段时间后滴加浓硫酸溶液反应，减压抽水得硼酸苯酯改性高邻位酚醛树脂，在120~160℃下熔融纺丝，将冤死固化得硼酸苯酯改性高邻位酚醛纤维。本发明方法制备速度快、固化速率快，纤维耐烧蚀、耐热热性高、力学性能好，具有推广使用价值。 The invention discloses a preparing method for ablation-resistant boric acid phenyl ester modified high-ortho phenolic fibers. A phenolic compound, boric acid, methyl alcohol and citric acid are mixed and reacted to obtain solid boric acid phenyl ester, boric acid phenyl ester, paraformaldehyde and citricacide-titatnium chelate are added into the phenolic compound and subjected to a reflux reaction for a period of time, then a concentrated sulfuric acid solution is dripped for a reaction, boric acid phenyl ester modified high-ortho phenolic resin is obtained through decompression and water pumping, melt spinning is carried out at 120-160 DEG C, and the boric acid phenyl ester modified high-ortho phenolic fibers are obtained by curing filaments. The preparing method is high in preparing speed and curing speed, the