Functional Fiber and Its Composite Materials Engineering Technology Research Center in Liaoning Province

Dalian, China

Functional Fiber and Its Composite Materials Engineering Technology Research Center in Liaoning Province

Dalian, China

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Guo J.,Dalian Polytechnic University | Guo J.,Functional Fiber and its Composite Materials Engineering Technology Research Center in Liaoning Province | Zhang B.,Dalian Polytechnic University | Mu S.,Dalian Polytechnic University | And 6 more authors.
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | Year: 2016

In order to obtain suitable phase change materials and phase transition temperature in the file of construction, lauric acid (LA)and palmitic acid (PA) were blended to prepare binary eutectic fatty acids (LA-PA) as energy storage material, bio-based SiO2 (b-SiO2)powder extracted from waste straw and straw ash was the carrier. Then LA-PA/b-SiO2 amorphous phase change energy storage materials were prepared by melt impregnation method. The structure and properties of LA-PA/b-SiO2 phase change composites were analyzed by FTIR, XRD, specific surface area analysis, SEM, DSC and TGA. The results show that there is not a simple physical interaction between the LA-PA and the b-SiO2. LA-PA is bound to the b-SiO2 porous network, thus the phase change materials will not leak when the solid phase is changed into a liquid phase. XRD analysis shows that the crystallinity of the LA-PA/b-SiO2 phase change composite decreases with the increase of b-SiO2 content. The DSC and TGA analysis show that the LA-PA/b-SiO2 phase change composites have good properties of phase transformation and thermal stability. The enthalpy of phase change is between 67.36-146.0 J/g. © 2016, BUAA Culture Media Group Ltd. All right reserved.


Yang L.,Dalian Polytechnic University | Guo J.,Dalian Polytechnic University | Guo J.,Functional Fiber and Its Composite Materials Engineering Technology Research Center in Liaoning Province | Li S.,Dalian Polytechnic University | And 2 more authors.
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | Year: 2016

Act glutaraldehyde as enhance modifier to prepare primitive Antarctic krill protein/sodium alginate (AKP/SA) primary fibers using wet spinning process, and the high strength Antarctic krill protein/algae (HAKP/SA) composite fibers were fabricated via online thermal crosslinking technology realizing thermal crosslinking reaction through primary fiber spinning line. Thermal crosslinking temperature was defined by Rotational viscometer. The effects of crosslinking degree on microstructure and moisture absorption performance of composite fiber were studied, and the variations of mechanical properties and crystallization properties of composite fiber after reinforcement were tested. The results show that glutaraldehyde can perform effective thermal crosslinking reaction when temperature is 80℃. AKP/SA composite fiber has good moisture absorption performance, moisture absorption rate of 7.3%, the moisture absorption performance of composite fiber decreases and moisture balance time shortens with the increase of crosslinking degree. HAKP/SA composite fiber still exists in amorphous form. Surface of composite fiber shows uniform groove microstructure. Mechanics performance test shows that the fiber breaking strength after reinforcement increases by 13%. © 2016, BUAA Culture Media Group Ltd. All right reserved.


Yang L.,Dalian Polytechnic University | Guo J.,Dalian Polytechnic University | Guo J.,Functional Fiber and Its Composite Materials Engineering Technology Research Center in Liaoning Province | Zhang S.,Dalian Polytechnic University | And 10 more authors.
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | Year: 2015

The sodium alginate/Antarctic Krill protein (SA/AKP) composite fiber was prepared successfully. The rheological properties of the composites were studied by DV-C digital rotational viscometer, and the relationship of relative rheological factors was discussed, such as temperature, shear rate, viscosity, viscous flow activation energy, non-Newtonian index, structural viscosity index and so on. Meanwhile, the processing factors (coagulation bath concentration, residence time), microstructure (the surface morphology) and performance of the SA/AK composite fiber were also studied. The results of study show that the SA/AKP limits oxygen index (LOI) is around 39. The study also indicates that the SA/AK composite fiber is poor in crystal structure. The thermal stability decreases slightly due to the addition of AKP component. The SA/AKP solution can be regard as pseudoplastic fluid, its viscosity decreases as the shear rate increasing. Moreover, the study shows that the surface of composite fiber shows uniform groove microstructure and the cross section presents round or oval. Finally, the optimum processing condition of the SA/AK composite fiber is as follow: the SA mass concentration is 3%, the AKP is 30 phr by mass, spinning temperature is around 80 ℃, CaCl2 mass concentration is 5%, the coagulation time is 3.5 min. The breaking strength of the fiber is around 2.58 CN/dtex. ©, 2015, Chengdu University of Science and Technology. All right reserved.

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