玻璃微球表面辉光等离子体聚合物涂层的热稳定性研究

采用辉光放电聚合技术,在不同工作压强条件下在直径为350—400 μm,厚度为2.5—3 μm的玻璃微球上制备了辉光放电聚合物 (GDP)涂层,并对玻璃/GDP微球模拟充气过程进行了热稳定性实验.利用傅里叶变换红外光谱仪、元素分析仪、热重法、体视显微镜和X射线照相技术对GDP涂层的内部结构及其化学键、热稳定性、微球形貌和厚度进行了表征.结果表明:GDP涂层中的碳氢比、不饱和键和C C含量随着制备压强的增大而减小,低压的热稳定性较好,GDP涂层与玻璃微球的结合力提高,流变、起泡和脱层现象也得到明显改善.微球 关键词： 玻璃微球 GDP涂层 热稳定性 结合力

Thermal stability of glow discharge polymer coatings on glass microspheres

Using trans-2-butene and hydrogen as the precursor, the glow discharge polymer (GDP) films are successfully coated on glass microspheres with diameters of 350—400 μm and thicknesses of 2.5—3 μm by the glow discharge polymerization technology. Glass/GDP microsphere is heated to test its thermal stability, whose process is the same as the D₂ gas charge procedure. The chemical structures, the thermal stabilities of the GDP films, the morphologies of glass/GDP microspheres are characterized by the FT-IR, TG, stereoscopic microscope and X-radiography technology. The Results show that the C/H and C C in GDP films decrease as pressure increases. Their thermal stabilities are better, and the adhesion between GDP film and glass microsphere is enhanced when the GDP coatings are fabricated at lower pressures.