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首页> 外文期刊>Journal of Applied Polymer Science >Melamine formaldehyde/polyvinyl alcohol composite fiber: Structures and properties controlled by reaction-induced phase separation
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Melamine formaldehyde/polyvinyl alcohol composite fiber: Structures and properties controlled by reaction-induced phase separation

机译：三聚氰胺甲醛/聚乙烯醇复合纤维：反应诱导相分离控制结构与性能

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摘要

Melamine-formaldehyde resin (MF)/polyvinyl alcohol (PVA) composite fibers with different phase structures and properties were prepared through reaction induced phase separation by wet spinning. Raman spectroscopy, rotary viscometer, and miscibility index were used to characterize the MF resins with different reaction degrees (RD). The phase structures of composite spinning dopes and composite fibers were observed by optical microscope (OM) and scanning electron microscope (SEM). Mechanical properties, flame retardant properties, and thermal stability of the composite fibers were also tested. Results show that the composite fibers made from MF resins with different RD have different phase structures and properties; when the miscibility index (MI) of MF resin is 1.60, the obtained MF/PVA composite fiber shows a sea- island phase structure, which endues the fiber with the best comprehensive properties: the breaking strength, breaking elongation, rupture work and limiting oxygen index (LOI) are 4.29 cN/dtex, 13.55%, 8.46 x 10(-5) J/dtex and 43.1%, respectively. (C) 2015 Wiley Periodicals, Inc.
机译：通过湿纺反应诱导相分离，制备了具有不同相结构和性能的三聚氰胺-甲醛树脂（MF）/聚乙烯醇（PVA）复合纤维。拉曼光谱法，旋转粘度计和混溶性指数用于表征具有不同反应度（RD）的MF树脂。通过光学显微镜（OM）和扫描电子显微镜（SEM）观察复合纺丝原液和复合纤维的相结构。还测试了复合纤维的机械性能，阻燃性能和热稳定性。结果表明，由不同RD的MF树脂制成的复合纤维具有不同的相结构和性能。当MF树脂的混溶指数（MI）为1.60时，所得MF / PVA复合纤维呈现出海岛相结构，从而赋予该纤维最佳的综合性能：断裂强度，断裂伸长率，断裂功和极限氧指数（LOI）分别为4.29 cN / dtex，13.55％，8.46 x 10（-5）J / dtex和43.1％。 （C）2015年Wiley Periodicals，Inc.

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