Preparation and properties of n-eicosane/cellulose diacetate phase change filter material

In order to achieve rapid cooling of flue gas, the composite phase-change gas filtration materials were prepared by using the common tobacco filter material diacetate fiber as the carrier matrix and n-eicosane as the phase change material, and the cooling rate of the composite filter materials were further accelerated by doping single-walled carbon nanotubes. The influence of the content of n-eicosane on the spinnability of compound spinning liquid and on the apparent morphology and thermal properties of composite phase change filter materials and the influence of the content of single-walled carbon nanotubes on the apparent morphology, thermal properties and heat storage velocity of composite phase change filter materials were discussed. The results show that adding n-eicosane lowers the spinnability of the compound spinning liquid, but with the increase of the content of n-eicosane, the spinnability and plasticity of the spinning solution are improved, the average fiber diameter increases, and the melting enthalpy of filter materials increases accordingly. When the mass ratio of n-eicosane to cellulose diacetate is 3: 10, the highest enthalpy efficiency of the filter material is 84.1%. As the content of single-walled carbon nanotubes increases, the instantaneous heat absorption rate of the filter material increases. When the doping amount is 1.0%, the instantaneous heat absorption rate of the filter material increases from 0. 062℃/s of pure diacetate fiber filter material to 0. 202℃/s. Copyright No content may be reproduced or abridged without authorization.