Open Access
Articles
Article ID: 164
by Jiankang Chen
Composite Materials Research, Vol.6, No.2, 2024; 189 Views, 4 PDF Downloads
using powder carbon nanotubes(CNT)and carbon nanotube network with connection points(cntnis a template,through thepolyaniline(PANI)Limiteddomain aggregation gotCnt/paniandCntn/pani2species composite.using a transmission electron microscope and a scanning electron microscope for the shape of the materialLook atthe description,using nitrogen adsorption-Thepore structure parameters of the material are studied by the desorption analysis,Electrical conductivity of the material using a dual-electric four-probeTesterTotest,using constant current charge and discharge,cyclic voltammetry,Electrochemicaltest methods such as cyclic lifetime and AC impedance characterize the electrochemical storage of materialsperformance.Theresults indicate that,Cntn/panicomposites thanCnt/panicomposites exhibit better conductivity and electrochemical energy storage performance,Its discharge is greater than capacity143.2 f/g(Organic liquid.
Open Access
Articles
Article ID: 175
by Yaowen chao
Composite Materials Research, Vol.6, No.2, 2024; 182 Views, 3 PDF Downloads
Toimprove the mechanical and thermal properties of polypropylene (PP) matrix composites,ultrafine Bamboo-char (UFBC) was introduced intoppby twin-screw extrusion and injection.Effects of different mass fractions of UFBC on the properties of the resulting ufbc/pp composites were mvestigated.A combination of SEM,dsc,mechanical test and moisture absorption test wasPerformed to provide a comprehensive analysis of the structure and properties of UFBC/PP composites.Uniform dispersion of UFBC in the PP matrix and do Mterac - tion via physical interfacial interlocks were obseRVed with SEM.The addition of UFBC has remarkable impacton Themechanical properties of the composites.Tensile strength and bending strength increase with the mcrease of UFBC contents, and reach maximum values of MPa and 54 mpa,respectivelywhen30%mass fraction of ufbcaddition s Used,whichIncrease by 9%and18%Comparing with those of PP.The moisture resistance of ufbc/pp compos ites is still excellent,and the moisture absorption s less than 0. Â 1%.DSC analysis illustrates that melting tempera ture increases by 3 c when mass fraction of UFBCis40%,And thecrystallization temperature increases by 8 0 C when the mass fraction of UFBC s 50%.The crystallization and fabricability of composites are improvedwith the addition of UFBC.
Open Access
Articles
Article ID: 182
by Delong He
Composite Materials Research, Vol.6, No.2, 2024; 217 Views, 4 PDF Downloads
with load quantitative polyvinylidene fluoride ( PVDF ) nylon non-woven fabric for intercalation materials , carbon fiber reinforced ring prepared by co-curing process gas resin base composites , The mechanical and damping properties of the system are systematically studied . tests the flexural strength of composites , bending modulus , layer Shear Strength , I type and n type fracture toughness and other mechanical properties , and tests the energy storage modulus of the composite through a dynamic mechanical analyzer , loss modulus and loss factor temperature spectra , the damping and vibration resistance of a single cantilever beam is studied by free vibration experiment. . at the same time , analysis using optical microscopy and scanning electron microscopy composite microstructure , and then study damping mechanism . The results indicate that , Insert load between composite layers PVDF the nylon non-woven fabric of can be in no causes significantly reduced mechanical performance , The damping properties and fracture toughness of the composites are improved significantly . The Basic damping mechanism of is that it has been cured in a total of The thermoplastic intercalation material in the process forms a resin-rich area with a high loss factor between the layers of the composites , increase the loss factor 150%, and Force basic performance remains unchanged.
Open Access
Articles
Article ID: 189
by ri-liang Wu
Composite Materials Research, Vol.6, No.2, 2024; 183 Views, 4 PDF Downloads
Fe3O4@carbon/graphene oxide (Fe3O4@c/go) composites were synthesized by hydrothermal method and characterized by X-ray diffraction, transmission e Lectron microscopy, vibrating sample magnetometer. And their dye Adsorbing properties were investigated. The results indicated that the Fe3O4 Nanoparticles were uniformly anchored on go sheets. The saturated adsorption capacities towards rhodamine B (RhB) of the composites increased with the increase of Go content, initial RhB concentration and Adsorbing temperature. And the higher go content in The composite was, the quicker the absorbing Rate was. The saturated adsorption capacity of The composite reached a maximum value When the PH value is 7. For the composite prepared at 0.8 Of the mass ratio of Go To Fe 3O4, The saturated adsorption capacity reached 303.4mg/g at 1000mg/l of initial RhB concentration.
Open Access
Articles
Article ID: 200
by liangdian Liu
Composite Materials Research, Vol.6, No.2, 2024; 170 Views, 7 PDF Downloads
The ceramifiable ethylene propylene diene monomer (EPDM) composites with different fiber contents were prepared by taking EPDM as the matrix , Kaolin and talc as the functional fillers , Aluminum Hydroxide as the Flame Retardant , The and the chopped polyimide (PI) fiber as the reinforcement. The effects of chopped polyimide fiberson thetensile properties,Thermal Stability and microstructure of ceramifiable PI Fiberkaolin-talc-akoh)3/ EPDM (PKTA/EPDM) composites were investigated, and theceramicization Mechanism of chopped polyimide fiber reinforced composites was analyzed. The results show, the tensile strength of the composites decreases with the increasing of chopped Imide fibers. When the chopped PI fibers are less than : [mass ratio to EPDM ),Mechanical properties of the composites are. The ceramifiable PKTA/EPDM composites can be ceramicized after pyrolysis at 800-1 100C. The addition of 4 : , - 8 : mass ratio to EPDM chopped poly - imide fibers can effectively keep the shape stability of the Composites after pyrolysis at the - 1 0 C , and thebending strength of the ceramic productf I between 6-18 MPa. The results of thermal analysis show that the thermal LIU L d,qin y,song J q,et Al Preparation and properties of ceramifiable ethylene propylene diene monomer rubber Composites reinforced with the chopped polyimide iibers[j]. Acta materiae Compositae sinica,2017, : 2800-2809 (in Chinese). and SEM Analysis I ndicate that the pyrolysis and carbonization of the chopped PI fibers in the char layer form the Structure of fiber^reinforced char layer. The PI fiber reinforced structure contributes to obtaining the well-shaped EPDM Composites.
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