A novel soluble poly(aryl ether ketone) (PAEK) terminated with 4-nitrophthalonitrile was designed and synthesized, which was used to solve the problem of difficult solution processing. Then, a series of cross-linked PAEK films with different thermal treatment temperatures were fabricated by using 4,4-bis(3,4-dicyanophenoxy)biphenyl (BPH) as a novel cross-linking agent, improving the glass transition temperature (Tg) of the traditional PAEK. Then, the fourier transform infrared (FT-IR) spectrum, X-ray diffraction (XRD), differential scanning calorimetry (DSC), thermo gravimetric analysis (TGA), dynamic mechanical analysis (DMA), mechanical testing machine and LCR meter were used to investigate the microstructure, thermal, mechanical and dielectric properties of PAEK films, respectively. The results indicated that the increase in heat-treatment time and temperature are beneficial for the improvement of the value of Tg and T5%, and the excellent thermal stability and mechanical properties of PAEK films are demonstrated. Compared to PAEK-1 film, the Tg and T5% both increased by 63 °C for PAEK-4 film. Significantly, the tensile strength of PAEK-3 film (42 MPa) reaches the highest value in comparison with other samples. In addition, the dielectric constants (ε) and loss tangent (tan δ) of PAEK-4 film is as low as 3.67 and 0.001 at 1 kHz, respectively. More importantly, the dielectric properties are found to be relatively stable to near the Tg value, which can be widely used for applications in dielectric energy storage at high temperatures.
This is a preview of subscription content, log in to check access.
The authors wish to thank for the Sichuan University of Science and Engineering Talent Introduction Project (No.2016RCL35), Opening Project of Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities (2018JXY04) and Major Project of Education Department in Sichuan (18ZA0346).
Besides, all the authors approved the final version of the manuscript.
Xu YX, Yang JS, Ye NY, Teng M, He RH (2015) Modification of poly(aryl ether ketone) using imidazolium groups as both pendants and bridging joints for anion exchange membranes. Eur Polym J 73:116–126CrossRefGoogle Scholar
Harsha AP, Wäsche R (2018) Influence of temperature on friction and wear characteristics of polyaryletherketones and their composites under reciprocating sliding condition. J Mater Eng Perform 27(10):5438–5449CrossRefGoogle Scholar
Panda JN, Bijwe J, Pandey RK (2017) Comparative potential assessment of solid lubricants on the performance of poly aryl ether ketone (PAEK) composites. Wear 384-385:192–202CrossRefGoogle Scholar
Ni CJ, Wang HB, Zhao Q, Liu BJ, Sun ZY, Zhang MY, Hu W, Liang L (2018) Crosslinking effect in nanocrystalline cellulose reinforce sulfonated poly(aryl ether ketone) proton exchange membranes. Solid State Ionics 323:5–15CrossRefGoogle Scholar
Garcia-Gonzalez D, Rusinek A, Jankowiak T, Arias A (2015) Mechanical impact behavior of polyether–ether–ketone (PEEK). Compos Struct 124:88–99CrossRefGoogle Scholar
Lu T, Wen J, Qian S, Cao HL, Ning CQ, Pan XX, Jiang XQ, Liu XY, Chu PK (2015) Enhanced osteointegration on tantalum-implanted polyetheretherketone surface with bone-like elastic modulus. Biomater 51:173–183CrossRefGoogle Scholar
Goyal R, Tiwari A, Mulik U, Negi Y (2007) Novel high performance Al2O3/poly(ether ether ketone) nanocomposites for electronics applications. Compos Sci Technol 67(9):1802–1812CrossRefGoogle Scholar
Kalin M, Zalaznik M, Novak S (2015) Wear and friction behaviour of poly-ether-ether-ketone (PEEK) filled with graphene, WS2 and CNT nanoparticles. Wear 332-333:855–862CrossRefGoogle Scholar
Díez-Pascual AM, Naffakh M, Marco C, Ellis G, Gómez-Fatou MA (2012) High-performance nanocomposites based on polyetherketones. Prog Mater Sci 57(7):1106–1190CrossRefGoogle Scholar
Najeeb S, Zafar MS, Khurshid Z, Siddiqui F (2016) Applications of polyetheretherketone (PEEK) in oral implantology and prosthodontics. J Prosthodont Res 60(1):12–19CrossRefGoogle Scholar
Liu TX, Mo ZS, Zhang HF (1998) Isothermal and nonisothermal melt crystallization kinetic behavior of poly(aryl ether biphenyl ether ketone ketone): PEDEKK. J Polym Eng 18(4):283–299Google Scholar
Ligot S, Bousser E, Cossement D, Klemberg-Sapieha J, Viville P, Dubois P, Snyders R (2015) Correlation between mechanical properties and cross-linking degree of ethyl lactate plasma polymer films. Plasma Process Polym 12(6):508–518CrossRefGoogle Scholar
Pu ZJ, Huang X, Chen L, Yang J, Tang HL, Liu XB (2013) Effect of nitrile-functionalization and thermal cross-linking on the dielectric and mechanical properties of PEN/CNTs–CN composites. J Mater Sci - Mater Electron 24(8):2913–2922CrossRefGoogle Scholar
Tang HL, Huang X, Yang XL, Yang J, Zhao R, Liu XB (2012) An effective approach to enhance temperature independence of dielectric properties for polyarylene ether nitrile films. Mater Lett 75:218–220CrossRefGoogle Scholar
Tong LF, Pu ZJ, Huang X, Chen ZR, Yang XL, Liu XB (2013) Cross-linking behavior of polyarylene ether nitrile terminated with phthalonitrile (PEN-t-Ph)/1,3,5-tri-(3,4-dicyanophenoxy) benzene (TPh) system and its enhanced thermal stability. J Appl Polym Sci 130(2):1363–1368CrossRefGoogle Scholar
Yang RQ, Wei RB, Li K, Tong LF, Jia K, Liu XB (2016) Cross-linked polyarylene ether nitrile film as flexible dielectric materials with ultrahigh thermal stability. Sci Rep 6:36434CrossRefGoogle Scholar
Liu T, Wang YP, Su Y, Yu HY, Zhao N, Yang YH, Jiang ZH (2015) Preparation and properties of film materials of poly(aryl ether ketone)-based phthalonitrile resins. Polym Eng Sci 55(10):2313–2321CrossRefGoogle Scholar
Wei RB, Tu L, You Y, Zhan CH, Wang YJ, Liu XB (2019) Fabrication of cross-linked single-component polyarylene ether nitrile composite with enhanced dielectric properties. Polym 161:162–169CrossRefGoogle Scholar
Rezania J, Shockravi A, Vatanpour V, Ehsani M (2019) Preparation and performance evaluation of carboxylic acid containing polyamide incorporated microporous ultrafiltration PES membranes. Polym Adv Technol 30(2):407–416CrossRefGoogle Scholar
1.College of Materials Science and Engineering, Material Corrosion and Protection Key Laboratory of Sichuan province, Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial UniversitiesSichuan University of Science & EngineeringZigongChina