P(PEGA-HAM)/PEG与PP共混蓄热调温纤维的制备及其性能

以P(PEGA-HAM)/PEG固-固相变粒子为相变材料(PCM)、以PP-g-PEGA为增容剂与成纤聚合物(PP)按不同比例混合,通过熔融纺丝工艺制备不同相变材料含量的蓄热调温纤维。IR测试分析确定了固-固型相变粒子的化学结构以及三元共混体系的化学组成;通过DSC、纤维强力仪以及SEM表征了蓄热纤维的热性能、力学性能以及外观形态;利用XRD和毛细管流变仪表征了三元共混体系的结晶性能和流变性能。结果表明,当PCM为12%、PP-g-PEGA为3%时,调温纤维的相变焓为12.17J/g,断裂强度为4.86cN/dtex,纤维表面光滑完整;P(PEGA-HAM)/PEG含量的增多破坏了PP基体中α晶的形成,使得PP的结晶度降低,三元共混体系的剪切黏度随着PCM的增多呈现先减小后增大的流变行为,剪切黏度随着温度的升高而降低。

Preparation and characterization of thermo-regulating fiber of blend of P(PEGA-HAM)/PEG and PP

The different phase change materials content of thermo-regulating fiber was prepared through the melt spinning process.The chemical structure of the solid-solid phase particle and the chemical composition of ternary blend system were determined by IR analysis.The heat storage fiber thermal property,mechanical property and appearance shape was characterized by DSC,fiber tensile strength tester and SEM.The ternary blending system crystallization properties and rheological properties was characterized by XRD and capillary rheological meter.When P(PEGA-HAM)/PEG content was 12%,and PP-g-PEGA content was 3%,the tempering fiber phase transition enthalpy was 12.17 J/g,and fracture strength was 4.86 cN/dtex,the fiber surface was smooth and complete.The PP matrix of α crystal formation was destroyed with the P(PEGA-HAM)/PEG content increasing,leading to the reduction in the crystallinity of PP.The shear viscosity of ternary blend system showed first reducing then increasing in flow behavior when increased P(PEGA-HAM)/PEG solid-solid phase change particle,and shear viscosity was reduced with the rising temperature.