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首页> 外文期刊>Journal of Applied Polymer Science >Fire retardancy and durability of poly(N-benzyloxycarbonyl-3,4- dihydroxyphenylalanine)-montmorillonite composite film coated polyimide fabric
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Fire retardancy and durability of poly(N-benzyloxycarbonyl-3,4- dihydroxyphenylalanine)-montmorillonite composite film coated polyimide fabric

机译：聚（N-苄氧基羰基-3,4-二羟基苯基丙氨酸）-蒙脱土复合膜包覆聚酰亚胺织物的阻燃性和耐久性

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摘要

Polyimide (PI) fabric was coated with composite films composed of poly(N-benzyloxycarbonyl-3,4-dihydroxyphenylalanine) (PNBD) and montmorillonite (MMT), prepared via layer-by-layer assembly. Three coating recipes (changed by altering the concentration of PNBD solution) were used to study the growth of thin films. Scanning electron microscope showed that, after 20 times standard washing, PNBD-MMT film still coated on PI fiber, while MMT film coated on PI had been almost washed off. Thermogravimetric analysis indicated that, in nitrogen atmosphere at 900°C, the residue of uncoated PI was 36.62%, after 20 times standard washing, residue of PNBD-MMT coated PI (53.80%) was higher than that of MMT coated PI (50.08%). Vertical flame testing showed that the burning length of PNBD-MMT coated PI (7 mm) was much shorter than that of uncoated PI (30 mm) and MMT coated PI (17 mm) after 20 times standard washing. These results demonstrated the excellent flame retardancy and durability of PNBD-MMT film coated PI fabric.
机译：聚酰亚胺（PI）织物上涂有一层由多层（N-苄氧基羰基-3,4-二羟基苯丙氨酸）（PNBD）和蒙脱石（MMT）组成的复合薄膜，该复合薄膜是通过逐层组装的方式制备的。使用三种涂层配方（通过更改PNBD溶液的浓度进行更改）来研究薄膜的生长。扫描电子显微镜显示，在标准洗涤20次后，PNBD-MMT膜仍被PI纤维覆盖，而PI上的MMT膜几乎被洗掉。热重分析表明，在900°C的氮气环境下，未涂覆的PI的残留率为36.62％，经过20倍标准洗涤后，PNBD-MMT涂覆的PI的残留率为53.80％，高于MMT涂覆的PI的残留率为50.08％。 ）。垂直火焰测试表明，经过20次标准清洗后，PNBD-MMT涂层的PI（7毫米）的燃烧长度比未涂层的PI（30毫米）和MMT涂层的PI（17毫米）短得多。这些结果证明了PNBD-MMT薄膜涂覆的PI织物的优异的阻燃性和耐久性。

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