烷基醇偶氮苯光热棉织物制备及应用

Preparation and application of alkyl alcohol azobenzene photothermal cotton fabric

为改善个人热管理织物温度提升性能,通过烷基醇与偶氮苯的耦合作用,研制具有光热性能的烷基醇偶氮苯棉织物。不同配比的烷基醇偶氮苯的相变点不同,从而影响了光热性能。配比为3∶7烷基醇偶氮苯具有较高的相变点,可以达到68.4℃,在12 min内可以达到异构化亚稳态,并且在15 min内回复到稳态,具有较快的光响应速率。烷基醇偶氮苯棉织物在600 W/m^(2)光照强度下表面平均温度可达43.9℃,相比棉织物,光热性能提高了38.5%,具有良好的光热性能。

In order to improve the temperature-raising performance of personal thermal management fabrics,an alkyl alcohol azobenzene cotton fabric with photothermal properties was developed through the coupling of alkyl alcohol azobenzene and azobenzene.The phase transition points of alkyl alcohol azobenzene with different proportions affected the photothermal properties.The alkyl alcohol azobenzene fabric with 3∶7 ratio exhibited higher phase transition temperature,reaching 68.4 ℃.It achieved isomerization metastable state within 12 min and returned to stable state within 15 min,demonstrating fast photothermal response rate.Under the intensity of 600 W/m~2,the average surface temperature of alkyl alcohol azobenzene cotton fabric reached 43.9 ℃,showing 38.5% improvement in photothermal performance compared to regular cotton fabric.The alkyl alcohol azobenzene fabric exhibited excellent photothermal properties.