新型硼酸酯偶联剂的合成及其应用
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摘要
以硼酸、2-甲基环己醇、乙醇胺为原料,甲苯为共沸溶剂,合成1种新型偶联剂硼酸邻甲基环己醇二乙醇胺酯(MCDAB)。采用傅立叶变换红外光谱仪(FTIR)和核磁共振氢谱仪(1HNMR)对合成的偶联剂进行表征;在滑石粉/PP复合材料中,添加自制的偶联剂(MCDAB)对其改性,分别使用扫描电子显微镜(SEM)、偏光显微镜(POM)、计算机系统拉伸试验机、数字冲击试验机对复合材料的微观形貌、结晶性能、力学性能进行分析。结果表明:经MCDAB改性的滑石粉与PP相容性变好,分散更均匀,结晶度明显提高;当MCDAB添加量为1. 8%时,复合材料的拉伸强度为35. 13 MPa,提高了11. 3%;断裂伸长率为11. 78%,提高了126%;冲击强度为10. 78 k J·m-2,提高了105%;弯曲强度为250 MPa,提高了近25%。
A new coupling agent,2-methylcyclohexanol diethanolamine borate( MCDAB) was synthesized by boric acid,2-methylcyclohexanol and ethanolamine as raw materials and toluene as an azeotropic solvent. The structure of the product was characterized by fourier transform infrared spectroscopy( FTIR) and1 H nuclear magnetic resonance(1 HNMR); the talc/PP composite was modified by adding self-made coupling agent( MCDAB),the microstructure,crystallization and mechanical properties of the composite were analyzed by using scanning electron microscopy( SEM),polarized light microscopy( POM),computer system tensile testing machine,digital impact testing machine. The results showed that the compatibility of talc powder modified by MCDAB with PP was better,the dispersion was more uniform,and the crystallinity was significantly improved. When the amount of MCDAB added was 1. 8% by weight,the tensile strength of the composite material was 35. 13 MPa,an increase of 11. 3%; the elongation at break was 11. 78%,an increase of 126%; the impact strength was 10. 78 k J·m-2,an increase of 105%; the bending strength was 250 MPa,an increase of 25%.
A new coupling agent,2-methylcyclohexanol diethanolamine borate( MCDAB) was synthesized by boric acid,2-methylcyclohexanol and ethanolamine as raw materials and toluene as an azeotropic solvent. The structure of the product was characterized by fourier transform infrared spectroscopy( FTIR) and1 H nuclear magnetic resonance(1 HNMR); the talc/PP composite was modified by adding self-made coupling agent( MCDAB),the microstructure,crystallization and mechanical properties of the composite were analyzed by using scanning electron microscopy( SEM),polarized light microscopy( POM),computer system tensile testing machine,digital impact testing machine. The results showed that the compatibility of talc powder modified by MCDAB with PP was better,the dispersion was more uniform,and the crystallinity was significantly improved. When the amount of MCDAB added was 1. 8% by weight,the tensile strength of the composite material was 35. 13 MPa,an increase of 11. 3%; the elongation at break was 11. 78%,an increase of 126%; the impact strength was 10. 78 k J·m-2,an increase of 105%; the bending strength was 250 MPa,an increase of 25%.
引文
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[3]刘俊龙,刘兵.阻燃剂水镁石的表面改性研究[J].化工新型材料,2010,38(2):111-114.
[4]滕谋勇,徐保良,秦明臣,等.稀土偶联剂对氢氧化镁的表面改性及其阻燃应用[J].塑料工业,2011,39(6):82-86.
[5]赵越,张艳玲,赵芝田,等.硬脂酸干法改性水镁石的表面性质[J].大连工业大学学报,2010,29(3):185-189.
[6]白国强,李晓峰,陈洛亮.硼酸酯类键合剂研究进展[J].化学推进剂与高分子材料,2006,4(6):17-19.
[7] WANG J,WANG J,LI C,et al. A high-performance multifunctional lubricant additive for water-glycol hydraulic fluid[J]. Tribology Letters,2011,43(2):235-245.
[8] JIA Z,XIA Y,PANG X,et al. Tribological behaviors of different diamondlike carbon coatings on nitrided mild steel lubricated with benzotriazole-containing borate esters[J]. Tribology Letters,2011,41(1):247-256.
[9]刘俊君.新型含氮硼酸酯极压抗磨剂的合成及摩擦性能研究[D].广州:广东工业大学,2009.
[10] CHAKRABARTI A,FILLER R,MANDAL B K. Borate ester plasticizer for PEO-based solid polymer electrolytes[J]. Journal of Solid State Electrochemistry,2008,12(3):269-272.
[11] Caires C C,GUCCIONE S. Synthesis,structure,and reactivity of borate ester coordinated organobismuth compounds[J].Organometallics,2008,27(4):747-752.
[12]胡晓兰,梁国正.硼酸酯水解稳定性研究与应用[J].材料导报,2002,16(1):58-60.
[13] YAOJ,DONG J. Improvement of hydrolytic stability of borate esters used as lubricant additives[J]. Lubrication Engineering,1995,51(6):475-479.
[14]戴静,王敏,张金才.硼酸盐晶须改性环氧树脂性能研究[J].功能材料,2007,38(4):569-572.
[15]郑俊良.硼酸酯偶联剂的合成与应用研究[J].当代化工,2014,43(11):2249-2252.
[16] ZHENG Z,SHEN G,WAN Y,et al. Synthesis,hydrolytic stability and tribologicial properties of novel borate esters containing nitrogen as lubricant additives[J]. Wear,1998,222(2):135-144.
[17] RAHMA F,FELLAHI S. Performance evaluation of synthesized acrylic acid grafted polypropylene within CaCO3/polypropylene composites[J]. Polymer Composites,2000,21(2):175-186.
[18] UVAROVA I. Ultrafine and nanophased powders as the fillers in composite coatings[J]. Journal of Advanced Materials,2000,32(2):26-31.
[19] WANG H Z,GAO L,GUO J K. Influence of SiC particle size on microstructure and mechanical properties of Al2O3-SiC nanocomposites[J]. Journal of Advanced Materials,2000,32(1):60-64.
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