氟化丙烯酸酯聚合物因其对氧气的敏感性高,光降解率低及温度敏感性低等优点在压力敏感涂料(PSP)中的应用越来越广。为了改善聚对叔丁基苯乙烯用作PSP基体聚合物的性能,采用自由基聚合法制备了氟化甲基丙烯酸酯单体与对叔丁基苯乙烯共聚物,通过核磁氢谱(1H-NMR)、凝胶渗透色谱(GPC)等测试手段对聚合物的结构和性能进行了表征。将共聚物与氧探针混合并喷涂制备了压力敏感涂层,对其氧传感性、压力敏感性、温度敏感性以及光降解性能进行了研究,筛选出最适合用作PSP基体聚合物衬底。结果表明:甲基丙烯酸六氟异丙酯与对叔丁基苯乙烯的共聚物综合性能最为优异,压力敏感性高(Sp=0.7154%/kPa),温敏感性低(ST=-0.4978%/℃),光降解性较低(Id=9.92%/h)。
Fluorinated acrylate polymers are widely used in pressure-sensitive coatings (PSP),attributing to their high sensitivity for oxygen,low photodegradation rate and low temperature sensitivity.Target to improve the performance of poly (p-tert-butylstyrene) as PSP matrix polymer,the copolymers deriving from fluorinated methacrylate monomers and p-tert-butylstyrene monomers were synthesized by free radical polymerization.1H-NMR and GPC were employed to characterize the structures and properties of the copolymers.The pressure-sensitive coatings were prepared by blending the copolymer with an oxygen probe and spraying.Their oxygen sensing,pressure sensitivity,temperature sensitivity and photodegradation properties were investigated,and the optimum substrate for PSP was screened out.The results indicated that the copolymer deriving from hexafluoroisopropyl methacrylate and p-tert-butylstyrene exhibited the optimal comprehensive properties,with high pressure sensitivity (Sp=0.7154%/kPa),low temperature sensitivity (ST=-0.4978%/℃) and low photodegradation (Id=9.92%/h).
[1] Liu T,Sullivan J P,Asai K,et al.Pressure and temperature sensitive paints[M].Berlin:Springer,2005:48-49.
[2] Zhang B,Yao C Y,Zhu H,et al.Experimental study on film cooling performance of a turbine blade tip with a trapezoidal slot cooling scheme in transonic flow using PSP technique[J].Experimental Thermal and Fluid Science,2022,130:110513.
[3] Quinn M K,Yang L,Kontis K.Pressure-sensitive paint:effect of substrate[J].Sensors,2011,11(12):11649-11663.
[4] Hyakutake T,Taguchi H,Kato J,et al.Luminescent multi-layered polymer coating for the simultaneous detection of oxygen pressure and temperature[J].Macromolecular Chemistry and Physics,2009,210(15):1230-1234.
[5] Khotimskii V S,Filippova V G,Bryantseva I S,et al.Synthesis,transport,and sorption properties and free volume of polystyrene derivatives containing Si and F[J].Journal of Applied Polymer Science,2000,78(9):1612-1620.
[6] Köse M E,Carroll B F,Schanze K S.Preparation and spectroscopic properties of multiluminophore luminescent oxygen and temperature sensor films[J].Langmuir,2005,21(20):9121-9129.
[7] Egami Y,Konishi S,Sato Y,et al.Effects of solvents for luminophore on dynamic and static characteristics of sprayable polymer/ceramic pressure-sensitive paint[J].Sensors and Actuators A:Physical,2019,286:188-194.
[8] Xu W,Schmidt R,Whaley M,et al.Oxygen sensors based on luminescence quenching:interactions of pyrene with the polymer supports[J].Analytical Chemistry,1995,67(18):3172-3180.
[9] Puklin E,Carlson B,Gouin S,et al.Ideality of pressure-sensitive paint.I.platinum tetra (pentafluorophenyl) porphine in fluoroacrylic polymer[J].Journal of Applied Polymer Science,2000,77(13):2795-2804.
[10] Amao Y,Asai K,Miyashita T,et al.Photophysical and photochemical properties of optical oxygen pressure sensor of platinum porphyrin-isobutylmethacrylate-trifluoroethylmethacrylate copolymer film[J].Polymer Journal,1999,31(12):1267-1269.
[11] Shi J,Wei C,Deng M,et al.Synthesis of fluorinated copolymers and their applications as pressure-responsive materials[J].Journal of Applied Polymer Science,2023:e53969.
[12] 陈茂,龚红红,赵宇澄.一种(甲基)丙烯酸氟代烷基酯类聚合物的光控制聚合方法:CN201710997700.6[P].2024-03-02.
[13] 孙道德,黄琴,伍辉杨,等.全氟己基乙基甲基丙烯酸酯的调聚及阻聚工艺研究[J].化学研究与应用,2023,35(11):2725-2733.
[14] Peterson J I,Fitzgerald R V.New technique of surface flow visualization based on oxygen quenching of fluorescence[J].Review of Scientific Instruments,1980,51(5):670-671.
[15] Gregory J W,Sakaue H,Liu T,et al.Fast pressure-sensitive paint for flow and acoustic diagnostics[J].Annual Review of Fluid Mechanics,2014,46:303-330.
[16] Chung K M,Huang Y X,Lin C Y,et al.Surface pressure measurements on a forebody using pressure-sensitive paint[J].Journal of Aeronautics,Astronautics and Aviation,2021,53:369-374.
[17] Chung K M,Huang Y X,Wu H Y,et al.Pressure measurements using pressure sensitive paint in compressible cylindrical cavity and convex-corner flows[J].Journal of Aeronautics,Astronautics and Aviation,2019,51(3):265-273.
[18] Wolfbeis O S.Sensor paints[J].Advanced Materials,2008,20(19):3759-3763.
[19] Amao Y,Okura I.Optical oxygen sensor devices using metalloporphyrins[J].Journal of Porphyrins and Phthalocyanines,2009,13(11):1111-1122.
[20] Matsuda Y,Uchida K,Egami Y,et al.Polymer-particle pressure-sensitive paint with high photostability[J].Sensors,2016,16(4):550.
基金资助
国家重点研发计划项目(2020YFA0405700);国家自然科学基金(12202476);四川省自然科学基金项目(2022NSFSC0032);西南科技大学环境友好能源材料国家重点实验室基金项目(21fksy03和20fksy03)
PDF
