纳米凹凸棒土/木纤维改性PP的冲击性能和热性能
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摘要
将凹凸棒土(ATP)和木纤维(WF)作为填料单独或同时加入到聚丙烯(PP)基体中,制备PP/ATP,PP/WF和PP/(ATP+WF)复合材料,通过测试X射线衍射仪、扫描电子显微镜、差示扫描量热仪、热变形温度测试等比较研究不同填料不同含量对复合材料耐热性和力学性能的影响。结果表明,ATP和WF加入到PP中生成了α晶相,没有影响PP基体结晶类型,但提高了其结晶度。加入ATP,WF及两者同时加入都能够提高复合材料的冲击强度,最大值分别比纯PP提高7.8,11.4,14.8 k J/m2,PP/(ATP+WF)复合材料效果的冲击强度最高,ATP和WF起到了协同增韧的结果。加入ATP和WF的复合材料的熔融峰温度、热变形温度和维卡软化温度都比纯PP有所提高,其中PP/(ATP+WF)复合材料提高效果最显著。
Attapulgite(ATP) and wood fiber(WF) were added alone or co-doped to synthesize PP/ATP,PP/WF and PP/(APT+WF) composites. The effects of different filler or content on the heat resistance and mechanical properties of the synthesized composites were characterized by XRD,SEM,DSC,HDT and so on. The results showed that the addition of ATP and WF to the PP did not affect the crystal type of PP matrix because of the single αcrystal phase formed in PP,but it improved the crystallinity. The impact strength of the composites was improved by adding ATP and WF. The maximum value was 7.8,11.4,14.8 k J/m2 respectively. The impact strength of PP/(ATP+WF) composites was the best,which was the result of synergistic toughening of ATP and WF. The melting peak temperature,thermal deformation temperature and vicat softening temperature of these composites were all higher than those of pure PP,and those of PP/(ATP+WF) composites were the highest.
Attapulgite(ATP) and wood fiber(WF) were added alone or co-doped to synthesize PP/ATP,PP/WF and PP/(APT+WF) composites. The effects of different filler or content on the heat resistance and mechanical properties of the synthesized composites were characterized by XRD,SEM,DSC,HDT and so on. The results showed that the addition of ATP and WF to the PP did not affect the crystal type of PP matrix because of the single αcrystal phase formed in PP,but it improved the crystallinity. The impact strength of the composites was improved by adding ATP and WF. The maximum value was 7.8,11.4,14.8 k J/m2 respectively. The impact strength of PP/(ATP+WF) composites was the best,which was the result of synergistic toughening of ATP and WF. The melting peak temperature,thermal deformation temperature and vicat softening temperature of these composites were all higher than those of pure PP,and those of PP/(ATP+WF) composites were the highest.
引文
[1]Pedrazzolia D,Khumalo V M,Karger-Kocsis J,et al.Thermal,viscoelastic and mechanical behavior of polypropylene with synthetic boehmite alumina nanoparticles[J].Polymer Testing,2014,35:92–100.
[2]Li N,Xia Y,Mao Z,et al.Influence of antimony oxide on flammability of polypropylene/intumescent flame retardant system[J].Polym Degrad Stab,2012,97:1 737–1 744.
[3]Ding H L,Guo L Y.Effect of annealing temperature on low-temperature toughness ofβ-nucleated polypropylene randomcopolymer/ethylene-propylened-diene terpolymer blends[J].Chinese Journal of Polymer Science,2015,33:256–264.
[4]Rupesh A K,Bhattacharyya A R,Kulkarni A R.Melt mixed polypropylene/acrylonitrile-butadiene-styrene blends with multiwall carbon nanotubes:effect of compatibilizer and modi-fier on morphology and electrical conductivity[J].Journal of Applied Polymer Science,2011,120:2 663–2 672.
[5]Xia Y,Zhu Y,Zhou Y,et al.Improved dispersion of attapulgite in polypropylene by grap oxide and the enhanced mechanical properties[J].Polymer Composites,2016,39(2):560–568.
[6]柳峰,徐冬梅,刘琼琼,等.纳米凹凸棒土对PP/EPDM/EP性能的影响[J].工程应用塑料,2012,40(5):33–35.Liu Feng,Xu Dongmei,Liu Qiongqiong,et al.Influence of nanoattapulgite on properties of PP/EPDM/EP composites[J].Engineering Plastics Application,2012,40(5):33–35.
[7]Morandim-Giannetti A A,et al.Carbohydrate Polymers,2012,87(4):2 563–2 568.
[8]Nenkova S,Dobrilova C,Natov M,et al.Modification of wood flour with maleic anhydride for manufacture of wood-polymer composites[J].Polymer Composites,2006,14(2):185–194.
[9]Faruk O,Matuana L M.Nanoclay reinforced HDPE as a matrix for wood-plastic composites[J].Composites Science and Technology,2008,68(9):2 073–2 077.
[10]Saheb M S M D,Tambe P,Malathi M.Influence of halloysite nanotubes(HNTs)on morphology,crystal-lization,mechanical and thermal behaviour of PP/ABS blend and their composites in presence and absence of dual compatibilizer[J].Composites Interfaces,2016,5:433–451.
[11]高翔,毛立新,张猛响,等.凹凸棒土/聚丙烯/聚碳酸酯三元复合材料的力学性能及增韧机理[J].复合材料学报,2005,22(3):1–8.Gao Xiang,Mao Lixin,Zhang Mengxiang,et al.Mechanical properties and toughening mechanism of ternary AT/PP/PC composites[J].Acta Materiae Compositae Sinica,2005,22(3):1–8.
[12]周团元,梁基照.多壁碳纳米管含量对PP/多壁碳纳米管复合材料热稳定性和结晶的影响[J].塑料工业,2015,43(11):81–84.Zhou Tuanyuan,Liang Jizhao.Effects of multi-walled carbon nanotubes content on the thermal stability and crystallization of PP/multi-walled carbon nanotube composites[J].China Plastics Industry,2015,43(11):81–84.
[13]Krache R,Debbah I.Some mechanical and thermal properties of PC/ABS blends[J].Materials Sciences and Applications,2011(2):404–410.
[14]Xu X,He Z,Lu S R,et al.Enhanced thermal and mechanical properties of lignin/polypropylene wood-plastic composite by using flexible segment-containing reactive compatibilizer[J].Macromolecular Research,2014,22(10):1 084–1 089.
[15]Zhao L,Liu P.The origin of the curing behavior,mechanical and thermal properties of surface functionalized attapulgite/bismaleimide/diallylbisphenol composites[J].Applied Surface Science,2014,288:435–443.
[2]Li N,Xia Y,Mao Z,et al.Influence of antimony oxide on flammability of polypropylene/intumescent flame retardant system[J].Polym Degrad Stab,2012,97:1 737–1 744.
[3]Ding H L,Guo L Y.Effect of annealing temperature on low-temperature toughness ofβ-nucleated polypropylene randomcopolymer/ethylene-propylened-diene terpolymer blends[J].Chinese Journal of Polymer Science,2015,33:256–264.
[4]Rupesh A K,Bhattacharyya A R,Kulkarni A R.Melt mixed polypropylene/acrylonitrile-butadiene-styrene blends with multiwall carbon nanotubes:effect of compatibilizer and modi-fier on morphology and electrical conductivity[J].Journal of Applied Polymer Science,2011,120:2 663–2 672.
[5]Xia Y,Zhu Y,Zhou Y,et al.Improved dispersion of attapulgite in polypropylene by grap oxide and the enhanced mechanical properties[J].Polymer Composites,2016,39(2):560–568.
[6]柳峰,徐冬梅,刘琼琼,等.纳米凹凸棒土对PP/EPDM/EP性能的影响[J].工程应用塑料,2012,40(5):33–35.Liu Feng,Xu Dongmei,Liu Qiongqiong,et al.Influence of nanoattapulgite on properties of PP/EPDM/EP composites[J].Engineering Plastics Application,2012,40(5):33–35.
[7]Morandim-Giannetti A A,et al.Carbohydrate Polymers,2012,87(4):2 563–2 568.
[8]Nenkova S,Dobrilova C,Natov M,et al.Modification of wood flour with maleic anhydride for manufacture of wood-polymer composites[J].Polymer Composites,2006,14(2):185–194.
[9]Faruk O,Matuana L M.Nanoclay reinforced HDPE as a matrix for wood-plastic composites[J].Composites Science and Technology,2008,68(9):2 073–2 077.
[10]Saheb M S M D,Tambe P,Malathi M.Influence of halloysite nanotubes(HNTs)on morphology,crystal-lization,mechanical and thermal behaviour of PP/ABS blend and their composites in presence and absence of dual compatibilizer[J].Composites Interfaces,2016,5:433–451.
[11]高翔,毛立新,张猛响,等.凹凸棒土/聚丙烯/聚碳酸酯三元复合材料的力学性能及增韧机理[J].复合材料学报,2005,22(3):1–8.Gao Xiang,Mao Lixin,Zhang Mengxiang,et al.Mechanical properties and toughening mechanism of ternary AT/PP/PC composites[J].Acta Materiae Compositae Sinica,2005,22(3):1–8.
[12]周团元,梁基照.多壁碳纳米管含量对PP/多壁碳纳米管复合材料热稳定性和结晶的影响[J].塑料工业,2015,43(11):81–84.Zhou Tuanyuan,Liang Jizhao.Effects of multi-walled carbon nanotubes content on the thermal stability and crystallization of PP/multi-walled carbon nanotube composites[J].China Plastics Industry,2015,43(11):81–84.
[13]Krache R,Debbah I.Some mechanical and thermal properties of PC/ABS blends[J].Materials Sciences and Applications,2011(2):404–410.
[14]Xu X,He Z,Lu S R,et al.Enhanced thermal and mechanical properties of lignin/polypropylene wood-plastic composite by using flexible segment-containing reactive compatibilizer[J].Macromolecular Research,2014,22(10):1 084–1 089.
[15]Zhao L,Liu P.The origin of the curing behavior,mechanical and thermal properties of surface functionalized attapulgite/bismaleimide/diallylbisphenol composites[J].Applied Surface Science,2014,288:435–443.