Structure and Properties of Melt-Extruded LaRC-1A (3,4'-ODA 4,4'-ODPA) Polyimide Fibers

DORSEY K.D.; DESAI P.; ABHIRAMAN A.S.; HINKLEY J.A. T.L.ST.

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Structure and Properties of Melt-Extruded LaRC-1A (3,4'-ODA 4,4'-ODPA) Polyimide Fibers

机译：熔体挤出LaRC-1A（3,4'-ODA 4,4'-ODPA）聚酰亚胺纤维的结构和性能

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LaRC-IA polyimide fibers were extruded from the melt and drawn. The fibers were characterized by sonic pulse propagation, polarized optical microscopy, calormetric analysis, X-ray diffraction, and tensile testing. When the amorphous, essentially isotropic, as-extruded filaments were heated slowly in a calorimeter, no “cold”crystallization could be detected. However, when these filmaents were drawn at temperatures above the T_g of the polymer, they crystallized rapidly to produce oriented semicrystalline structures. The consequent increases in modulus and strength were significant, with the properties reaching the levels of commercial fibers of intermediate tenacity.

机译：将LaRC-IA聚酰亚胺纤维从熔体中挤出并拉伸。通过声脉冲传播，偏振光学显微镜，量热分析，X射线衍射和拉伸测试对纤维进行了表征。当在量热计中缓慢加热无定形，基本上各向同性的挤压长丝时，无法检测到“冷”结晶。然而，当这些成膜剂在高于聚合物的Tg的温度下拉伸时，它们迅速结晶以产生取向的半晶结构。结果，模量和强度显着提高，其性能达到中等强度的商品纤维水平。

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来源
《Journal of Applied Polymer Science》 |1999年第7期|共8页
作者
DORSEY K.D.; DESAI P.; ABHIRAMAN A.S.; HINKLEY J.A. T.L.ST.;
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正文语种 eng
中图分类高分子化学（高聚物）;高分子化合物产品;有机化学;
关键词
LaRC-IA polyimide fibers; melt extrusion; crystallization;

机译：LaRC-IA聚酰亚胺纤维;熔体挤出;结晶;

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1. Structure and Properties of Melt-Extruded LaRC-1A (3,4'-ODA 4,4'-ODPA) Polyimide Fibers [J] . DORSEY K.D., DESAI P., ABHIRAMAN A.S., Journal of Applied Polymer Science . 1999,第7期

机译：熔体挤出LaRC-1A（3,4'-ODA 4,4'-ODPA）聚酰亚胺纤维的结构和性能
2. Effect of tetraacid on the properties of ODPA/4,4′-ODA polyimide foams [J] . Liu X.-Y., Zhan M.-S., Shen Y.-X., Journal of Applied Polymer Science . 2011,第6期

机译：四酸对ODPA / 4,4'-ODA聚酰亚胺泡沫性能的影响
3. CRYSTAL STRUCTURE AND MECHANICAL PROPERTIES OF ODPA-DMB POLYIMIDE FIBERS [J] . Kim YH., Cheng SZD., Harris FW. Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems . 1996,第0期

机译：ODPA-DMB聚酰亚胺纤维的晶体结构和力学性能
4. Thermal degradation mechanism of the polyimide from 2,2'-bis(3,4-dicarboxyphenyl) hexafluoropane dianhydride and 4,4'-diaminodiphenylmethane [C] . Li Ren, Weiwen Fu, Yuangfang Luo, Pacific polymer conference preprints . 1999

机译：来自2,2'-BIS（3,4-二羧基）六氟烷二酐和4,4'-二氨基二苯基甲烷的聚酰亚胺的热降解机理
5. An investigation of the structure-property relationships for high performance thermoplastic matrix, carbon fiber composites with a tailored polyimide interphase. [D] . Gardner, Slade Havelock. 1998

机译：高性能热塑性基体，定制的聚酰亚胺相间碳纤维复合材料的结构-性能关系的研究。
6. Influence of Heating Rate on the Structure and Mechanical Properties of Aromatic BPDA–PDA Polyimide Fiber [O] . Wenke Yang, Fangfang Liu, Hongxiang Chen, 2020

机译：升温速率对芳族BPDA-PDA聚酰亚胺纤维结构和力学性能的影响
7. Influence of Heating Rate on the Structure and Mechanical Properties of Aromatic BPDA–PDA Polyimide Fiber [O] . Wenke Yang, Fangfang Liu, Hongxiang Chen, 2020

机译：加热率对芳香族BPDA-PDA聚酰亚胺纤维结构和力学性能的影响
8. Copolyimides prepared from ODPA, BTDA and 3,4'-ODA [R] . 1996

机译：由ODpa，BTDa和3,4'-ODa制备的共聚酰亚胺

Structure and Properties of Melt-Extruded LaRC-1A (3,4'-ODA 4,4'-ODPA) Polyimide Fibers

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