红外透过型尼龙多孔膜的制备及光热性能  

Preparation and optical-thermal properties of infrared-transparent nylon porous membrane

作　　者：朱方龙 冯倩倩 ZHU Fanglong;FENG Qianqian(School of Fashion,Huizhou University,Huizhou 516007,Guangdong,China)

机构地区：[1]惠州学院服装学院,广东惠州516007

出　　处：《化工进展》2025年第4期2215-2224,共10页Chemical Industry and Engineering Progress

基　　金：广东省基础与应用基础研究基金(2022A1515140036);广东省重点领域研发计划(2024B1111060002)。

摘　　要：以甲酸为溶剂、聚己内酰胺(PA 6)为高分子聚合物基体、无机纳米粒子为填料,通过非溶剂相分离(NIPS)方法分别制备纯PA 6膜及无机粒子-PA 6复合膜,并对膜的结构和光热性能进行表征。结果表明,在实验所选的凝固浴质量分数范围内,凝固浴质量分数越大,PA 6膜的表层孔隙数量越多,太阳光谱反射率越大,但凝固浴质量分数对PA 6膜总体孔隙的孔径及分布影响不明显,人体热辐射波段范围内(7~14μm)的红外透过率变化不大。与纯PA 6膜相比,添加无机粒子后可使膜的表层变得更粗糙,可见光谱反射率提高,中远红外波段透过率下降;掺杂纳米SiO_(2)粒子后,膜的界面纳米尺度孔数量增多,且50nm粒径的SiO_(2)粒子明显降低了膜材料的热稳定性。Pure PA 6 membranes and inorganic particle PA 6 composite membranes were prepared through non-solvent induced phase separation(NIPS)method by using formic acid as solvent,poly(caprolactam)(PA 6)as polymer matrix and inorganic nanoparticles as filler.The structures and optical-thermal properties of these membranes were characterized.The results showed that the higher the concentration of the coagulation bath,the more surface pores in the PA 6 membrane and the higher the solar spectral reflectance values.The concentration of the coagulation bath had no significant effect on the pore size and distribution of the cross-section pores of PA 6 membrane.Also,the infrared transmittance in the range of human body thermal radiation(7—14μm)did not change significantly.Compared with pure PA 6 membrane,the addition of inorganic particles could make the surface of the membrane rougher.The visible light spectral reflectance increased and transmittance decreased corresponding to mid-and far-bands.Especially,the number of interface nanopores in the membrane increased after doped with nano SiO_(2) particles.Moreover,the thermal stability of the membrane material integrated with 50nm SiO_(2) nanoparticles was significantly reduced.

关 键 词：红外透过 尼龙 多孔膜 光热性能 无机粒子 

分 类 号：TB64[一般工业技术—制冷工程]