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以丙烯腈(AN)和衣康酸(IA)共聚生成丙烯腈/衣康酸共聚物(P(AN-co-IA))为相容剂,用溶液共混法制备聚丙烯腈/聚乙二醇高分子固-固相变材料,用傅里叶变换红外光谱(FT-IR)、步冷曲线、差热分析(DSC)、X射线衍射(XRD)及偏光显微镜等手段对共混物进行表征,分析讨论了P(AN-co-IA)的增容机理和蓄热储能性。结果表明,P(AN-co-IA)对聚乙二醇/聚丙烯腈(PAN/PEG)共混体系具有良好的增容效果,共混材料的保温性能良好,具有较大的焓值,其相变温度和相变焓随着PEG含量的增加而提高,共混物呈现出“固-固”相变特性。在有限次的循环加热中相变温度及相变焓无明显变化,表明材料的蓄热耐久性良好。
Acrylonitrile (AN) and itaconic acid (IA) were copolymerized into acrylonitrile / itaconic acid copolymer (P (AN-co-IA)) as compatibilizer to prepare polyacrylonitrile / Diol macromolecule solid-solid phase change material was synthesized and characterized by Fourier transform infrared spectroscopy (FT-IR), step-cooling curve, differential scanning calorimetry (DSC), X-ray diffraction (XRD) and polarized light microscope Characterization, analysis and discussion of P (AN-co-IA) compatibilization mechanism and thermal storage energy. The results showed that P (AN-co-IA) had a good compatibilizing effect on the polyethylene glycol / polyacrylonitrile (PAN / PEG) blend system. The blend had good thermal insulation properties, The phase transition temperature and phase transition enthalpy increased with the increase of PEG content, and the blend showed a “solid - solid” phase transition. In a limited number of cycle heating phase transition temperature and phase change enthalpy no significant change, indicating that the material heat storage durability is good.