| Rabbit hair is known as "green soft gold" with its favorable properties such as moisture permeability, air permeability and heat preservation. The application field of rabbit hair fiber is wide, at the same time, with the continuously research and development of deep processing and comprehensive utilization technology, the application space of rabbit hair has further expanded with the deepening of the research. But the study on rabbit hair and chemical fiber mixed flocculus is not deep. In this paper, rabbit hair, acrylic and ES fiber are used as raw materials; rabbit hair and chemical fiber mixed warm flocculus is successfully trial-produced combined with needle punching process and hot air nonwoven process. Meanwhile, the same proportion of wool and chemical fiber mixed flocculus is set as control group. By testing and comparing the warmth retention performance of these two kinds of flocculus in the same conditions, a mathematical model of rabbit hair warm flocculus is established. The finding by analysis is that the warmth retention property of rabbit hair flocculus is better than that with same proportioning of wool flocculus under the needle punching process while slightly inferior to the wool flocculus under hot air process. And when the content of rabbit hair is 90%, chemical fiber 10%, the warmth retention property is the best; with the increasing in content of rabbit hair, thermal effect is better. On this basis, the fiber aggregation of flocculus heat transfer model is established, and the forecasting values of the model and the measured values tested by flat-plate warmth retaining tester are compared as well as the comparison result explained by using the infrared thermal imager. The results show that, small relative errors exist between the forecasts of coefficient of thermal conductivity and the actual values. When the material structure is relatively good, the model can be used for fiber aggregation coefficient of thermal conductivity prediction.
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