三种硅烷偶联剂改性磷石膏在HDPE中的应用
|
摘要
使用三种硅烷偶联剂:3-氨基丙基三乙氧基硅烷(KH550)、3-(2,3-环氧丙氧)丙基三甲氧基硅烷(KH560)、3-(甲基丙烯酰氧)丙基三甲氧基硅烷(KH570)对磷石膏进行改性,将改性后磷石膏与高密度聚乙烯(HDPE)熔融共混制备改性磷石膏/HDPE复合材料。利用红外光谱测试改性磷石膏红外特征吸收,分析改性剂结构对接触角、吸油值的影响,通过扫描电镜考察改性磷石膏在HDPE基体中分散情况,并测试材料的力学性能。结果表明,改性磷石膏填料到HDPE基体后的弯曲和拉伸强度得到明显提升;经具有疏水端且长烷基链的KH560和KH570改性后的磷石膏在吸油值、接触角和基体中分散性都优于链端为氨基的KH550。
The phosphogypsum was modified by three silane coupling agents which were 3-Aminopropyltriethoxysilane( KH550),3-Glycidoxypropyltrimethoxysilane( KH560),3-Methacryloxypropyltrimethoxysilane( KH570),and the modified phosphogypsum/high density polyethylene( HDPE) composite was prepared by melt blending the modified phosphogypsum with HDPE. The infrared characteristic absorption of modified phosphogypsum was tested by infrared spectroscopy. The influence of modifier structure on contact angle and oil absorption value was analyzed. The dispersion of modified phosphogypsum in HDPE matrix was investigated by scanning electron microscopy( SEM),and the mechanical properties of the material were tested. The results show that the bending and tensile strength of the modified phosphogypsum filler for the HDPE matrix are significantly improved. The dispersibility of phosphogypsum modified by KH560 and KH570 which has hydrophobic end and long alkyl chain is superior than KH550 with an amino group at the chain end.
The phosphogypsum was modified by three silane coupling agents which were 3-Aminopropyltriethoxysilane( KH550),3-Glycidoxypropyltrimethoxysilane( KH560),3-Methacryloxypropyltrimethoxysilane( KH570),and the modified phosphogypsum/high density polyethylene( HDPE) composite was prepared by melt blending the modified phosphogypsum with HDPE. The infrared characteristic absorption of modified phosphogypsum was tested by infrared spectroscopy. The influence of modifier structure on contact angle and oil absorption value was analyzed. The dispersion of modified phosphogypsum in HDPE matrix was investigated by scanning electron microscopy( SEM),and the mechanical properties of the material were tested. The results show that the bending and tensile strength of the modified phosphogypsum filler for the HDPE matrix are significantly improved. The dispersibility of phosphogypsum modified by KH560 and KH570 which has hydrophobic end and long alkyl chain is superior than KH550 with an amino group at the chain end.
引文
[1]ZOU Y B,FENG Y C,WANG L,et al.Processing and properties of MWNT/HDPE composites[J].Carbon,2004,42(2):271-277.
[2]吴正环,赵学礼,王权,等.再生高密度聚乙烯/协同表面改性滑石粉复合材料力学性能与结晶性能研究[J].塑料科技,2019,47(1):15-21.
[3]JOSHI M,BUTOLA B S,SIMON G,et al.Rheological and viscoelastic behavior of HDPE/octamethyl-POSS nanocomposites[J].Macromolecules,2006,39(5):1839-1849.
[4]KACIMI L,SIMON-MASSERON A,GHOMARI A,et al.Reduction of clinkerization temperature by using phosphogypsum[J].J Hazard Mater,2006,137(1):129-137.
[5]RUTHERFORD P M,DUDAS M J,SAMEK R A.Environmental impacts of phosphogypsum[J].Sci Total Environ,1994,149(1-2):1-38.
[6]KOWALSKA E,WIELGOSZ Z.The use of phosphogypsum as a filler for thermoplastics,part I:The use of phosphogypsum as a filler for polyolefine compositions[J].J Reinf Plast Compos,2002,21(11):1013-1026.
[7]KOWALSKA E,WKAWINSKA B.The use of phosphogypsum as a filler for thermoplastics,part II:Phosphogypsum as a filler for polyamide 6 and for PVC[J].JReinf Plast Compos,2002,21(11):1043-1052.
[8]ESSABIR H,NEKHLAOUI S,BENSALAH M O,et al.Phosphogypsum waste used as reinforcing fillers in polypropylene based composites:Structural,mechanical and thermal properties[J].J Polym Environ,2017,25(3):658-666.
[9]龚维,覃亚群,罗容,等.改性石膏晶须对HDPE复合材料力学性能的影响[J].贵州师范大学学报(自然科学版),2018,36(5):36-41.
[10]YUAN W J,CUI J Y,CAI Y B,et al.A novel surface modification for calcium sulfate whisker used for reinforcement of poly(vinyl chloride)[J].J Polym Res,2015,22(9):1-9
[11]秦军,金翠霞,于杰,等.硬脂酸对磷石膏的改性研究[J].无机盐工业,2009,41(10):47-49.
[12]谢长琼,何智宇,周元林.聚己内酯/硫酸钙晶须复合材料的力学性能研究[J].塑料科技,2012,40(5):74-76.
[13]石文建,刘忠进,赖寒,等.磷石膏晶须表面改性及其在PP中初步应用[J].塑料工业,2012,40(7):104-107.
[14]徐惠,孙涛.硅烷偶联剂对纳米Ti O2表面改性的研究[J].涂料工业,2008,38(4):1-3.
[15]秦军,金翠霞,谢占金,等.两种偶联剂对磷石膏的球磨改性工艺[J].塑料,2010,39(5):18-20.
[2]吴正环,赵学礼,王权,等.再生高密度聚乙烯/协同表面改性滑石粉复合材料力学性能与结晶性能研究[J].塑料科技,2019,47(1):15-21.
[3]JOSHI M,BUTOLA B S,SIMON G,et al.Rheological and viscoelastic behavior of HDPE/octamethyl-POSS nanocomposites[J].Macromolecules,2006,39(5):1839-1849.
[4]KACIMI L,SIMON-MASSERON A,GHOMARI A,et al.Reduction of clinkerization temperature by using phosphogypsum[J].J Hazard Mater,2006,137(1):129-137.
[5]RUTHERFORD P M,DUDAS M J,SAMEK R A.Environmental impacts of phosphogypsum[J].Sci Total Environ,1994,149(1-2):1-38.
[6]KOWALSKA E,WIELGOSZ Z.The use of phosphogypsum as a filler for thermoplastics,part I:The use of phosphogypsum as a filler for polyolefine compositions[J].J Reinf Plast Compos,2002,21(11):1013-1026.
[7]KOWALSKA E,WKAWINSKA B.The use of phosphogypsum as a filler for thermoplastics,part II:Phosphogypsum as a filler for polyamide 6 and for PVC[J].JReinf Plast Compos,2002,21(11):1043-1052.
[8]ESSABIR H,NEKHLAOUI S,BENSALAH M O,et al.Phosphogypsum waste used as reinforcing fillers in polypropylene based composites:Structural,mechanical and thermal properties[J].J Polym Environ,2017,25(3):658-666.
[9]龚维,覃亚群,罗容,等.改性石膏晶须对HDPE复合材料力学性能的影响[J].贵州师范大学学报(自然科学版),2018,36(5):36-41.
[10]YUAN W J,CUI J Y,CAI Y B,et al.A novel surface modification for calcium sulfate whisker used for reinforcement of poly(vinyl chloride)[J].J Polym Res,2015,22(9):1-9
[11]秦军,金翠霞,于杰,等.硬脂酸对磷石膏的改性研究[J].无机盐工业,2009,41(10):47-49.
[12]谢长琼,何智宇,周元林.聚己内酯/硫酸钙晶须复合材料的力学性能研究[J].塑料科技,2012,40(5):74-76.
[13]石文建,刘忠进,赖寒,等.磷石膏晶须表面改性及其在PP中初步应用[J].塑料工业,2012,40(7):104-107.
[14]徐惠,孙涛.硅烷偶联剂对纳米Ti O2表面改性的研究[J].涂料工业,2008,38(4):1-3.
[15]秦军,金翠霞,谢占金,等.两种偶联剂对磷石膏的球磨改性工艺[J].塑料,2010,39(5):18-20.