Preparation and Properties of Epoxy Resin Based Toughening Agent for SiC Ceramics

Abstract

Abstract: SiC ceramics are prone to edge chipping during grinding. Real-time coating the grinding layer of SiC ceramics with a toughening agent is a new method to control the edge chipping. The toughening agent used in this research was prepared with E51 bisphenol A epoxy resin, anhydrous ethanol, 651 low relative molecular weight polyamide resin, and 1,8-diazabicycloundec-7-ene (DBU) as its main ingredients. By measuring the control angle, wetting depth, and curing time of the toughening agent on the surface of SiC ceramics, the effects of the concentration of the toughening agent ingredients and surface roughness of ceramics on the wetting performance and curing rate of toughening agent were explored, and a toughening agent with good wetting performance and rapid curing rate was obtained. The results show that the optimal mass ratio of the toughening agents m(E51 bisphenol A epoxy resin)∶m(anhydrous ethanol)∶m(651 low relative molecular weight polyamide resin)∶m(DBU) is 1∶0.9∶0.5∶0.02. Under this configuration, the toughening agent penetrates the SiC ceramics surface to a depth of about 40 μm within 160 s, which reduces the surface hardness of the SiC ceramics by about 25%. The wetting performance of the toughening agent increases with the increase of the amount of solvent or the increase of the surface roughness of SiC ceramics, which is found to be almost not affected by the amount of the accelerator. In addition, the curing rate of the toughening agent decreases with the increase of the amount of solvent, and increases with the increase of the amount of accelerator. However, when the amount of accelerator reaches saturation, the curing rate will no longer increase.

Key words: SiC ceramics, edge chipping, epoxy resin, toughening agent, preparation craft, performance characterization

CLC Number:

TQ174.5

LI Linhu, TANG Xiujian, WANG Long, HE Dongyu, LIU Qian, TAN Jun. Preparation and Properties of Epoxy Resin Based Toughening Agent for SiC Ceramics[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(1): 266-276.

References

[1] LI P, JIN T, XIAO H, CHEN Z Q, et al. Effects of wheel speed on surface/subsurface damage characteristics in grinding of glass-ceramics[J]. Ceramics International,2020,46(11):46-55.
[2] GYURIKA I G, SZALAY T. The examination of the effect of variable cutting speeds on the surface and edge qualities of milled granite materials[J]. Advances in Mechanical Engineering, 2019, 11(7): 168781401983631.
[3] PRATAP A, PATRA K. Combined effects of tool surface texturing, cutting parameters and minimum quantity lubrication (MQL) pressure on micro-grinding of BK₇ glass[J]. Journal of Manufacturing Processes, 2020, 54: 374-392.
[4] JAIN A, SINGH G, JAIN V, et al. Feasibility analysis for machining serpentine microchannels on glass using rotary ultrasonic milling[J]. Measurement, 2020, 160: 107844.
[5] PU Y Z, ZHAO Y G, ZHANG H Y, et al. Study on the three-dimensional topography of the machined surface in laser-assisted machining of Si₃N₄ ceramics under different material removal modes[J]. Ceramics International, 2020, 46(5): 5695-5705.
[6] ABDO B M A, AHMED N, EL-TAMIMI A M, et al. Laser beam machining of zirconia ceramic: an investigation of micro-machining geometry and surface roughness[J]. Journal of Mechanical Science and Technology, 2019, 33(4): 1817-1831.
[7] WOO W S, LEE C M. A study on the edge chipping according to spindle speed and inclination angle of workpiece in laser-assisted milling of silicon nitride[J]. Optics & Laser Technology, 2018, 99: 351-362.
[8] 温张亚.工程陶瓷单点预应力磨削试验研究[D].湘潭:湘潭大学,2017.
WEN Z Y. Experiment study for engineering ceramics with single point grinding under compressive pre-stressing[D]. Xiangtan: Xiangtan University, 2017 (in Chinese).
[9] CHEN S T, JIANG Z H, WU Y Y, et al. Development of a grinding-drilling technique for holing optical grade glass[J]. International Journal of Machine Tools and Manufacture, 2011, 51(2): 95-103.
[10] 张立同,成来飞,徐永东,等.自愈合碳化硅陶瓷基复合材料研究及应用进展[J].航空材料学报,2006,26(3):226-232.
ZHANG L T, CHENG L F, XU Y D, et al. Progress on self-healing silicon carbide ceramic matrix composites and its applications[J]. Journal of Aeronautical Materials, 2006, 26(3): 226-232 (in Chinese).
[11] 田欣利,徐西鹏,袁巨龙.工程陶瓷先进加工与质量控制技术[M].北京:国防工业出版社,2014.
TIAN X L, XU X P, YUAN J L, et al. Advanced processing quality and control technology of engineering ceramics[M]. Beijing: National Defense Industry Press, 2014 (in Chinese).
[12] 樊轩虎.2A12铝合金微弧氧化膜层有机封孔工艺研究[D].西安:长安大学,2016.
FAN X H. Study on the organic-sealing process of micro-arc oxidation coating on 2A12 aluminum alloy[D]. Xi'an: Changan University, 2016 (in Chinese).
[13] 韩林原,陈尧,李旋,等.PLLA封孔工艺对微弧氧化镁合金丝材性能的影响[J].表面技术,2017,46(3):1-8.
HAN L Y, CHEN Y, LI X, et al. Effects of PLLA sealing technology on performance of micro-arc oxidized magnesium alloys[J]. Surface Technology, 2017, 46(3): 1-8 (in Chinese).
[14] 王学生,刘侠,包全合,等.铝硅复合硅氧烷封孔层的制备及耐腐蚀性能[J].表面技术,2019,48(10):258-266.
WANG X S, LIU X, BAO Q H, et al. Preparation and corrosion performance of aluminum-silicon composite siloxane sealing layer[J]. Surface Technology, 2019, 48(10): 258-266 (in Chinese).
[15] 马金鑫,胡张燕,王跃川.环氧树脂/多元硫醇体系的低温快速固化[J].热固性树脂,2011,26(1):35-38.
MA J X, HU Z Y, WANG Y C. Rapid curing of epoxy resin/multithiol compounds at low temperature[J]. Thermosetting Resin, 2011, 26(1): 35-38 (in Chinese).
[16] 宿凯,王德志,郑维先,等.改性环氧树脂体系固化动力学及实际固化工艺的研究[J].化学与粘合,2021,43(2):111-113.
SU K, WANG D Z, ZHENG W X, et al. Study on the curing kinetics and the practical curing process of the modified epoxy resin system[J]. Chemistry and Adhesion, 2021, 43(2): 111-113 (in Chinese).
[17] 崔正刚.表面活性剂、胶体与界面化学基础[M].第2版.北京:化学工业出版社,2019.
CUI Z G. Surface activator colloid and interface chemistry basis[M]. 2nd ed. Beijing: Chemical Industry Press, 2019 (in Chinese).
[18] 屈伟,范同祥.金属/陶瓷润湿性的实验表征和理论预测研究进展[J].材料导报,2019,33(21):3606-3612.
QU W, FAN T X. Advances in the wettability research of metal/ceramic systems: experimental characterization and theoretical estimation[J]. Materials Reports, 2019, 33(21): 3606-3612 (in Chinese).
[19] BAEK S, JEONG S, SEO J, et al. Effects of tube radius and surface tension on capillary rise dynamics of water/butanol mixtures[J]. Applied Sciences, 2021, 11(8): 3533.
[20] OKRASIŃSKA-PĿOCINICZAK H, PĿOCINICZAK Ŀ, ROCHA J, et al. Solvability in Hölder spaces of an integral equation which models dynamics of the capillary rise[J]. Journal of Mathematical Analysis and Applications, 2020, 490(1): 124237.
[21] DURAND M. Mechanical approach to surface tension and capillary phenomena[J]. American Journal of Physics, 2021, 89(3): 261-266.
[22] 许陆昕,李华,蔡晓童,等.碳化硅陶瓷超声振动辅助精密磨削实验研究[J].苏州科技大学学报(工程技术版),2020,33(2):72-80.
XU L X, LI H, CAI X T, et al. Experimental study on ultrasonic vibration assisted precision grinding of silicon carbide ceramics[J]. Journal of Suzhou University of Science and Technology (Engineering and Technology), 2020, 33(2): 72-80 (in Chinese).
[23] 丁凯,傅玉灿,苏宏华,等.磨削用量对超声辅助磨削碳化硅效果的影响[J].工具技术,2017,51(8):59-63.
DING K, FU Y C, SU H H, et al. Experimental study on ultrasonic assisted grinding of silicon carbide ceramic[J]. Tool Engineering, 2017, 51(8): 59-63 (in Chinese).