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Chinese Journal of Materials Research  2019, Vol. 33 Issue (6): 461-466    DOI: 10.11901/1005.3093.2018.692
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Effect of Technora Fiber Surface Plasma Treatment on Its Composite Interface Properties
Caixia JIA1,2,Qian WANG1(),Rong REN2,Funing SUN1
1. College of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136, China
2. Liaoning Key Laboratory of Advanced Polymer Matrix Composites, Shenyang 110136, China
Cite this article: 

Caixia JIA,Qian WANG,Rong REN,Funing SUN. Effect of Technora Fiber Surface Plasma Treatment on Its Composite Interface Properties. Chinese Journal of Materials Research, 2019, 33(6): 461-466.

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Abstract  

Technora fiber was surface modified by plasma treatment, and then characterized by means of scanning electron microscope and single fiber tensile strength tester in terms of the fiber surface morphologies and the properties of fiber itself, respectively. Then the influence of plasma treatment on the interfacial property of Technora fiber/epoxy resin in their composites in both room temperature dry (RTD) and elevated temperature wet (ETW) conditions was assessed based on the relevant values of interlamilar shear strength and water absorption. The results show that the plasma treatment had a great influence on the surface morphology of Technora fiber. Therefore, the interlamilar shear strength of Technora/Epoxy composites with the surface modified fiber is 24.93 MPa, which increases by 58.4% in comparison to 15.74 MPa for the composite with the as received fiber, correspondingly, the ability of water absorption of the composite decreased. However, the surface modification exhibits little effect on the property of the fiber itself. It is concluded that the surface plasma treatment of the Technora fiber is a significantly favored means for the enhancement of the interfacial performance of Technora fiber/epoxy resin within their composites.

Key words:  composites      technora fiber      plasma      surface morphology      interface properties     
Received:  06 December 2018     
ZTFLH:  TB332  
Fund: Natural Science Foundation of Liaoning Province(No. 20180550222);Scientific Research Program of Liaoning Education Department(No. L201751);Doctor Start-up Funds of Shenyang Aerospace University(No. 18YB48)

URL: 

https://www.cjmr.org/EN/10.11901/1005.3093.2018.692     OR     https://www.cjmr.org/EN/Y2019/V33/I6/461

Fig.1  Chemical structure of Technora fiber
Typeρ/g·cm3Rm/MPaEm/GPaδ%
T2401.39340673.34.45
Table 1  Essential parameters about Technora fiber
SampleParameterStage 1Stage 2
Technora/EP compositesTemperature80℃120℃
Pressure0.095 MPa0.095 MPa
Time1 h2 h
Table 2  Curing parameters about Technora fiber reinforced epoxy composites
Fig.2  SEM images of Technora fiber (a) TF-0-cross section, (b) TF-0, (c) TF-3, (d) TF-6, (e) TF-9
SampleTensile strength/MPaStandard deviationDecrease rate/%
TF-033983110
TF-233862910.35
TF-332992672.91
TF-632043025.71
TF-931162888.29
Table 3  Single fiber tensile strength of Technora fiber before and after plasma treatment
Fig.3  Interlamilar shear strength of Technora fiber reinforced epoxy composites
Fig.4  SEM images of Technora composites: after the treatment of air plasma for 2 s (a) and 6 s (b)
Fig.5  Water absorption of Technora fiber reinforced epoxy composite
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