耐高温PA10T/66及PA10T/66/GF非等温结晶动力学研究
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摘要
将合成的长碳链耐高温共聚尼龙10T/66 (PA10T/66)与玻纤(GF)共混,成功制备了PA10T/66/GF复合材料。采用差示扫描量热法对PA10T/66和PA10T/66/GF的非等温结晶行为进行了分析。采用Jeziorny和Mo法描述了PA10T/66和PA10T/66/GF的非等温结晶动力学。采用Kissinger计算了PA10T/66和PA10T/66/GF的结晶活化能。结果显示Jeziorny和Mo法均适合被用来计算PA10T/66和PA10T/66/GF的非等温结晶动力学参数;GF的加入并没有改变聚合物的晶体的成长机制,PA10T/66和PA10T/66/GF的晶体生长方式都为二维生长;相比于PA10T/66,PA10T/66/GF具有较高的结晶温度,较快的结晶速率和更低的非等温结晶活化能。这些都是由于GF的加入促进了PA10T/66的异相成核。
PA10 T/66/glass ?ber(GF) composites were successfully prepared by blending GF with as-synthetized long carbon chain heat resistant copolymer PA10 T/66. The non-isothermal crystallization behavior of PA10 T/66 and PA10 T/66/GF was analyzed by differential scanning calorimetry(DSC). Jeziorny and Mo methods were used to describe the non-isothermal crystallization kinetics of PA10 T/66 and PA10 T/66/GF. The activation energies of PA10 T/66 and PA10 T/66/GF were calculated by Kissinger. The results show that Jeziorny and Mo methods are suitable for calculating the non-isothermal crystallization kinetics parameters of PA10 T/66 and PA10 T/66/GF. Compared with PA10 T/66,PA10 T/66/GF has higher crystallization temperature,faster crystallization rate and lower non-isothermal crystallization activation energy. All these phenomenon are due to the glass ?bre addition is critically required for facilitating the heterogeneous nucleation of PA10 T/66.
PA10 T/66/glass ?ber(GF) composites were successfully prepared by blending GF with as-synthetized long carbon chain heat resistant copolymer PA10 T/66. The non-isothermal crystallization behavior of PA10 T/66 and PA10 T/66/GF was analyzed by differential scanning calorimetry(DSC). Jeziorny and Mo methods were used to describe the non-isothermal crystallization kinetics of PA10 T/66 and PA10 T/66/GF. The activation energies of PA10 T/66 and PA10 T/66/GF were calculated by Kissinger. The results show that Jeziorny and Mo methods are suitable for calculating the non-isothermal crystallization kinetics parameters of PA10 T/66 and PA10 T/66/GF. Compared with PA10 T/66,PA10 T/66/GF has higher crystallization temperature,faster crystallization rate and lower non-isothermal crystallization activation energy. All these phenomenon are due to the glass ?bre addition is critically required for facilitating the heterogeneous nucleation of PA10 T/66.
引文
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[2]张振.高性能聚酰胺新品种PA10T[J].工程塑料应用,2003,31(7):10.Zhang Zhen.A new high performance polyamide variety PA10T[J].Engineering Plastics Application,2003,31(7):10.
[3]Zhang Chuanhui,Huang Xiaobo,Zeng Xiangbin,et al.Fluidity improvement of semiaromatic polyamides:modification with oligomers[J].Journal of Applied Polymer Science,2014,131(7):5621-5633.
[4]Cao Li,Liu Xiaobo.Mechanical and thermal properties study of glass fiber reinforced polyarylene ether nitriles[J].Materials Letters,2007,61(11):2239-2242.
[5]Chen Weifeng,Pang Maizhi,Xiao Min,et al.Mechanical,thermal,and morphological properties of glass fiber-reinforced biodegradable poly(propylene carbonate)composites[J].Journal of Reinforced Plastics&Composites,2009,29(10):1 545-1 550.
[6]Wang Yu,Kang Hongliang,Wang Rui,et al.Crystallization of polyamide 56/polyamide 66 blends:Non-isothermal crystallization kinetics[J].Journal of Applied Polymer Science,2018,135(26):46 409.
[7]Shi Nan,Dou Qiang.Non-isothermal cold crystallization kinetics of poly(lactic acid)/poly(butylene adipate-co-terephthalate)/treated calcium carbonate composites[J].Journal of Thermal Analysis&Calorimetry,2015,119(1):635-642.
[8]Liu Tianxi,Mo Zhishen,Wang Shanger,et al.Nonisothermal melt and cold crystallization kinetics of poly(aryl ether ether ketone ketone)[J].Polymer Engineering&Science,2010,37(3):568-575.
[9]Wang Yu,Kang Hongliang,Wang Rui,et al.Crystallization of polyamide 56/polyamide 66 blends:Non‐isothermal crystallization kinetics[J].Journal of Applied Polymer Science,2018,135(26):46 409.
[10]Sun Zhijuan,Wang Xiao,Guo Fei,et al.Isothermal and nonisothermal crystallization kinetics of bio-sourced nylon 69[J].Chinese Journal of Chemical Engineering,2016,24(5):638-645.
[11]辛忠.小分子调控大分子结晶[M].上海:华东理工大学出版社,2016.Xin Zhong.Small molecule control ledmacro mole cule crystallization[M].Shanghai:East China University of Technology Press,2016.
[12]Augis J A,Bennett J E.Calculation of the Avrami parameters for heterogeneous solid state reactions using a modification of the Kissinger method[J].Journal of Thermal Analysis,1978,13(2):283-292.
[13]Wang Zhongqiang,Hu Guosheng,Zhang Jingting,et al.Nonisothermal crystallization kinetics of Nylon 10T and Nylon 10T/1010 copolymers:Effect of sebacic acid as a third comonomer[J].Chinese Journal of Chemical Engineering,2017,25(7):963-970.
[14]Jape S P,Deshpande V D.Nonisothermal crystallization kinetics of nylon 66/LCP blends[J].Thermochimica Acta,2017,655(10):1-12.
[15]Mcferran N L A,Armstrong C G,Mcnally T.Nonisothermal and isothermal crystallization kinetics of nylon-12[J].Journal of Applied Polymer Science,2010,110(2):1 043-1 058.
[16]Blaine R L,Kissinger H E.Homer Kissinger and the Kissinger equation[J].Thermochimica Acta,2012,540(14):1-6.