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Preparation of poly(melamine-formaldehyde-2,2′-bis(trifluoromethyl)benzidine) high-performance fibers
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2022-06-14 , DOI: 10.1002/app.52737 Jianming He 1, 2 , Shaoying Liu 1 , Dongliang Chen 1 , Gongying Wang 1 , Qingyin Wang 1
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2022-06-14 , DOI: 10.1002/app.52737 Jianming He 1, 2 , Shaoying Liu 1 , Dongliang Chen 1 , Gongying Wang 1 , Qingyin Wang 1
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Melamine formaldehyde fiber is widely used in various fields because of its excellent heat resistance and flame-retardant properties. In this study, melamine and paraformaldehyde are used as the main raw materials, 2,2′-bis(trifluoromethyl)benzidine (TFMB) is successfully introduced into the molecular chain. The TFMB modified spinning solutions (MF-TFMB) are obtained by one-step copolymerization, the TFMB-modified melamine-formaldehyde fibers (MFF-TFMB) are prepared by dry spinning. The surface contact angle and surface energy are measured by a contact angle measuring instrument. The thermal stability and mechanical properties of the fibers are measured by a thermogravimetric analyzer and a single-fiber strength tester. The results show that the introduction of the TFMB group reduces the surface free energy of the polymer and effectively improves the heat resistance and mechanical properties of the fiber. When the addition amount of TFMB is 3%, the MFF-TFMB-3% fiber has smooth surface and bubble-free inside, the breaking strength is 2.25 cN/dtex and the elongation at break is 11.85%. The limiting oxygen index is 32.5%, and the mass loss rate is decreased from 63.88% to 51.36% at 400°C. The fiber has excellent thermal stability and flame-retardant properties.
中文翻译：
聚(三聚氰胺-甲醛-2,2'-双(三氟甲基)联苯胺)高性能纤维的制备
三聚氰胺甲醛纤维因其优异的耐热性和阻燃性而被广泛应用于各个领域。本研究以三聚氰胺和多聚甲醛为主要原料，成功地将2,2'-双（三氟甲基）联苯胺（TFMB）引入分子链。通过一步共聚得到TFMB改性纺丝溶液(MF-TFMB)，干法纺丝制备TFMB改性三聚氰胺-甲醛纤维(MFF-TFMB)。表面接触角和表面能通过接触角测量仪测量。通过热重分析仪和单纤维强度测试仪测量纤维的热稳定性和机械性能。结果表明，TFMB基团的引入降低了聚合物的表面自由能，有效提高了纤维的耐热性和力学性能。TFMB添加量为3%时，MFF-TFMB-3%纤维表面光滑，内部无气泡，断裂强度为2.25 cN/dtex，断裂伸长率为11.85%。极限氧指数为32.5%，400℃时失重率由63.88%下降到51.36%。该纤维具有优异的热稳定性和阻燃性能。400℃时失重率由63.88%下降到51.36%。该纤维具有优异的热稳定性和阻燃性能。400℃时失重率由63.88%下降到51.36%。该纤维具有优异的热稳定性和阻燃性能。
更新日期：2022-06-14
中文翻译：
聚(三聚氰胺-甲醛-2,2'-双(三氟甲基)联苯胺)高性能纤维的制备
三聚氰胺甲醛纤维因其优异的耐热性和阻燃性而被广泛应用于各个领域。本研究以三聚氰胺和多聚甲醛为主要原料，成功地将2,2'-双（三氟甲基）联苯胺（TFMB）引入分子链。通过一步共聚得到TFMB改性纺丝溶液(MF-TFMB)，干法纺丝制备TFMB改性三聚氰胺-甲醛纤维(MFF-TFMB)。表面接触角和表面能通过接触角测量仪测量。通过热重分析仪和单纤维强度测试仪测量纤维的热稳定性和机械性能。结果表明，TFMB基团的引入降低了聚合物的表面自由能，有效提高了纤维的耐热性和力学性能。TFMB添加量为3%时，MFF-TFMB-3%纤维表面光滑，内部无气泡，断裂强度为2.25 cN/dtex，断裂伸长率为11.85%。极限氧指数为32.5%，400℃时失重率由63.88%下降到51.36%。该纤维具有优异的热稳定性和阻燃性能。400℃时失重率由63.88%下降到51.36%。该纤维具有优异的热稳定性和阻燃性能。400℃时失重率由63.88%下降到51.36%。该纤维具有优异的热稳定性和阻燃性能。
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