摘要
采用紫外光原位聚合法,在纺织品上制备以正十四醇为芯材,以甲基丙烯酸甲酯-丙烯酸丁酯共聚物为壁材的相变调温织物。采用场发射扫描电子显微镜、光量热差示扫描量热仪、热重分析仪、精密温度记录仪研究相变调温织物的表面形貌、热性能和调温性能。研究结果表明,当乳化速度为2500 r/min时,共聚物以成膜形式将正十四醇包覆在织物纤维表面,均匀分布在纤维中。测试结果表明,该调温织物的相变调温范围在22~34℃和36~42℃,相变潜热达到17. 24J/g;经70℃加热30 min处理未发生明显泄露,且分解温度比正十四醇提高了20℃左右,热稳定性较好,降温曲线表明具有较好的相变调温性能。
The thermal-regulated fabrics dependent on the phase change were prepared by in-situ polymerization under UV irradiation with tetradecanol as core material and polymethylmethacrylate-polybutyl acrylate as shell materials.Filed emission scanning electron microscopy( FE-SEM),differential scanning calorimetry( DSC),thermal gravimetric analysis( TGA) and precision temperature recorder were applied to characterize the surface morphology,thermal properties,temperature-regulation property. The results indicate that under the emulsification speed of 2500 r/min,tetradecanol is coated by copolymer in film form,and distributed uniformly among fibers. The test results show that the fabrics thermal-regulation range of temperature is 22 ~ 34 ℃ or 36 ~ 42 ℃ and the latent heat of 17. 24 J/g. The phase change materials on the polyester fabrics don't leak after heating for 30 min at 70 ℃. The decomposition temperature is 20 ℃higher than that of tetradecanol. The related fabrics have good heat stability. The cooling curves indicate that polyester fabric performs good temperature-regulation.
引文
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