紫外光引发甲基丙烯酸甲酯-丙烯酸丁酯共聚制备相变调温织物及其性能

Property of the Thermal-Regulation Fabrics Dependent on the Phase Change Prepared by the Copolymerization of MMA-BA Under UV-Initiating Condition

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.