Fiber-class modified kaolin and PET have been blended in the twin-screw and granulated to chips containing 4 wt％ of kaolin.Non-isothermal crystallization process of kaolin modified polyester was investigated using a differential scanning calorimetry (DSC),and the addition of kaolin enhances either the melting temperature (Tm) or the crystallization temperature (Tc).The morphology of kaolin modified polyester,the melt of which is cooled at different cooling rate,was observed by scanning electron microscope (SEM).The relationship between Tc and cooling rate F was studied.Semi-crystalline phase t1/2 makes an exponential decline with increasing F,and the higher the cooling rate,the shorter the time of crystallization completion.Non-isothermal crystallization kinetics parameters and the activation energy were calculated,indicating that the higher rate of cooling needs the higher relative crystallinity in the unit crystallization time,the crystallization rate increased while speeding up the temperature reduction,and the activation energy AE was calculated to be -204.1566 kJ/mol for the non-isothermal crystallization processes by the Kissinger's methods.
参考文献
| [1] | YANG Weizhong,YIN Guangfu,ZHOU Dali,YOUYANG Lijun,CHEN Linhong.Surface-modified Biphasic Calcium Phosphate/Poly (L-lactide) Biocomposite[J].武汉理工大学学报（材料科学版）（英文版）,2009(01):81-86. |
| [2] | LI Meichao,MA Chun'an,ZHONG Yijun.Preparation and Electrocatalytic Activity of Polyaniline-poly (Propylene Oxide) Modified by Pt Nanoparticles[J].武汉理工大学学报(材料科学版)英,2006(04):9-11. |
| [3] | CHENG Xianhua,XUE Yujun,SHANGGUAN Qianqian.Tribological Properties of Polytetrafluoroethylene Composites Filled with Rare Earths Modified Glass Fibers[J].武汉理工大学学报（材料科学版）英,2006(02):61-65. |
| [4] | Piccarolo S.;Kiflie Z.;Brucato V. .Non-isothermal crystallization kinetics of PET[J].Polymer engineering and science,2000(6):1263-1272. |
| [5] | A.Zarrage;M.E.Munoz;A.Santamaria .The role of a dechlorinated PVC as compatibiliser for PVC/polyethylene blends[J].Polymer bulletin,2002(3):283-290. |
| [6] | Kim JY;Park HS;Kim SH .Multiwall-carbon-nanotube-reinforced poly(ethylene terephthalate) nanocomposites by melt compounding[J].Journal of Applied Polymer Science,2007(3):1450-1457. |
| [7] | Chunhua Ge;Liyi Shi;Hui Yang .Nonisothermal Melt Crystallization Kinetics of Poly(ethylene terephthalate)/Barite Nanocomposites[J].Polymer Composites,2010(9):1504-1514. |
| [8] | Sukumar R;Menon ARR .Organomodified kaolin as a reinforcing filler for natural rubber[J].Journal of Applied Polymer Science,2008(6):3476-3483. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%