摘要： 为制备高稳定性 PEDOT/PSS水性分散体涂布液，通过激光粒度扫描仪、原子力显微镜、四探针测试仪等对水性分散体和薄膜进行表征，研究不同活性的硅烷偶联剂、 pH调节剂及有机溶剂种类对 PEDOT/PSS水性分散体的稳定性和薄膜性能的影响。结果表明：不同的硅烷偶联剂、有机胺或无机氨 pH调节剂以及单醇或二元醇溶剂对所得水性分散体的稳定性、薄膜微相结构分布稳定性及薄膜导电性均有重要的影响，加入硅烷偶联剂 VTMS及醇溶剂 IPA后薄膜导电率提高 1个数量级，加入 5 mol/L氨水的水性分散体在 50 ℃干燥箱中存放 1周后导电率仍保持在 200 S/cm以上，无机碱氨水对改善水性抗静电分散体的稳定性起着关键的作用。
关键词:
抗静电涂层,
PEDOT/PSS,
水分散体,
制备,
稳定性
Abstract: In order to prepare high-stability PEDOT/PSS aqueous dispersion coating liquid，the aqueous dispersion and film were characterized by laser particle size scanner， atomic force microscope and four-probe tester. The effects of different active silane couplingagents，pH regulators，and organic solvents on the stability of PEDOT/PSS aqueous dispersions and the properties of paint films were studied. The results showed that different silane couplingagents，organic amine or inorganic ammonia pH regulators，and monohydric or diol solventsindicated an important impact on the stability of the obtained aqueous dispersions，the stabilityof the distribution of membrane microstructure，and the conductivity of the film. Theconductivity of the coating solution after the addition of silane coupling agent VTMS andalcohol solvent IPA increased by an equal order of magnitude. The conductivity of the aqueousdispersion containing 5 mol/L inorganic ammonia water remained above 200 S/cm after beingstored in a 50 ℃ drying oven for one week. Inorganic alkali ammonia water played a crucialrole in improving the stability of the aqueous anti-static dispersion.
Key words:
antistatic coating；PEDOT/PSS；water dispersible；preparation；storage
中图分类号:
易英, 罗甜, 胡康迪, 等.. 聚（ 3，4-乙撑二氧噻吩） /聚苯乙烯磺酸钠（ PEDOT/ PSS）水性抗静电分散体稳定性研究[J]. 涂料工业, 2023, 53(10): 69-75.
YI Y, LUO T, HU K D, et al. Study On the Stability of Poly（3，4-ethylenedioxythiophene）/ Sodium Polystyrene Sulfonate（PEDOT/PSS）Aqueous Antistatic Dispersion [J]. Paint & Coatings Industry, 2023, 53(10): 69-75.