Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (07): 129-134.doi: 10.13475/j.fzxb.20190702606

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Preparation of polyurethane/phase change wax functional finishing agents for heat storage and temperature regulation and their applications on cotton fabrics

LIU Guojin, SHI Feng, CHEN Xinxiang, ZHANG Guoqing, ZHOU Lan()   

  1. Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
  • Received:2019-07-04 Revised:2019-12-18 Online:2020-07-15 Published:2020-07-24
  • Contact: ZHOU Lan E-mail:lan_zhou330@163.com

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Abstract:

Aiming at solving problems such as complication and low preparation efficiency in the preparation of heat storage and temperature regulating textiles by the traditional phase-change microcapsule finishing method, this study developed a simple and fast finishing method. In particular, phase change wax, polyoxyethylene octyl phenol ether-10 (OP-10) emulsifier and waterborne polyurethane were selected as the main materials to prepare heat storage and temperature regulating finishing agents by high shear emulsification. The prepared finishing agents were then treated onto cotton fabrics by the padding-baking method. The amount of the emulsifier and the ratio of the phase change wax to the polyurethane in the finishing agents were optimized, the baking temperature was investigated and the heat storage and temperature regulation performance of the finished cotton fabrics and the vests were measured. The results show that when the amount of emulsifier OP-10 is 5%, the ratio of phase change wax to polyurethane is 1.5∶1 and the baking temperature is 150 ℃, the cotton fibers can be wrapped by a thermo-regulated film produced from the finishing agents in order to obtain cotton fabrics with heat storage and temperature regulation performance. The finished cotton fabrics has the function of heat storage and temperature regulation. The vest made of the finished cotton fabrics has been proven that it has a significant heat storage temperature regulating function.

Key words: phase change wax, polyurethane, finishing agents, heat storage and temperature regulating textiles, cotton fabric, phase change material

CLC Number: 

  • TS195.2

Fig.1

State changes of emulsions with different dosages of emulsifier under the same standing time"

Tab.1

State changes of different emulsions after refrigeration for 24 h and oil precipitation on surface of heat storage and temperature regulating fabrics"

乳化剂
质量分数/%		 乳液状态
变化		 蓄热调温织物的
析油状况
3 乳液上层发生凝固,
下层变黏稠		 吸油纸出现明显油印
4 乳液上层发生凝固,
下层变黏稠		 吸油纸出现明显油印
5 乳液未发生凝固,
保持原样		 吸油纸无油印
6 乳液未发生凝固,
保持原样		 吸油纸无油印
7 乳液未发生凝固,
保持原样		 吸油纸无油印

Tab.2

Latent heat values and surface oil repellency of different heat storage and temperature regulating cotton fabrics"

相变蜡与
聚氨酯质量比		 蓄热织物的
潜热值/(J·g-1)		 蓄热调温织物的
析油状况
0.5∶1 8.62 吸油纸无油印
1.0∶1 15.62 吸油纸无油印
1.5∶1 18.24 吸油纸无油印
2.0∶1 19.39 吸油纸出现明显油印
2.5∶1 20.85 吸油纸出现明显油印

Tab.3

Peelability of prepared polyurethane film at different curing temperatures"

焙烘温度/℃ 从玻璃片上剥离的难易程度
70 易
90 较易
110 较易
130 难
150 难
180 难

Fig.3

TG curves of different samples"

Fig.4

FESEM images of original cotton fabrics (a) and heat storage and temperature regulating cotton fabrics (b)"

Fig.5

Cooling curves of original cotton fabrics and heat storage and temperature regulating cotton fabrics"

Fig.6

Thermal infrared images of vests made of original cotton fabrics (a) and heat storage and temperature regulating cotton fabrics (b)"

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