Materials Literature
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AS an electric loss wave absorbing material,hydrochloric acid doped polyaniline has the characteristics of poor magnetic loss and narrow wave absorbing frequency band.Electroless plating method was applied to assemble the magnetic alloy coating on the surface of hydrochloric acid doped polyaniline powder,and the chang…
The nature of titanium alloys is introduced,the mechanism and performance of titanium alloy hydrogen embrittlement is analyzed and the impact of hydrogen,covering hydrogen-induced cracking impact factors on titanium crack growth rate and fatigue life was summarized.
Based on polyethylene glycol adipate(PEA),diisocyanate(TDI) and aromatic diamine(MOCA),polyurethane elastomers were prepared by pre-polymerization method.And to be more reinforce polyurethane elastomers,micron-sized titanium dioxide(TiO2) was used successfully.The effects which the content of TiO2 and the usage of cro…
We reported the biomimetic synthesis of hybrid silica nanoparticles mediated with linear cationic poly(acrylamide-co-dimethylaminoethylacrylate-methyl chloride)[poly(AM-co-DMC)].The hybrid silica nanoparticles were simply synthesized by stirring a mixture of the aqueous solution of poly(AM-co-DMC) with tetramethoxysil…
The durability of fly ash concrete(FAC),concrete with high content mineral admixture(HCMC) and green high durable concrete(GHDC) subjected to the composite solution(5%MgCl2 + 5%Na2SO4) under long-term attack and dry-wet circulation were studied.Results show that GHDC has high durability subjected to the composite solu…
in order to investigate electrochemical properties of a novel composite made from poly[3′,4′-ethylenedioxy-2,2′:5′,2″-terthiophene](PTET) and carbon nanotubes(CNT),a derivative of ethylenedioxy-substituted terthiophene was synthesized as the precursors via Stille reaction,and chemical polymerization method was used to…
A novel acidic N-thioacyl thioglycolic acid functionalized triethylentetramine crosslinked PVC resin was preparated from PVC,triethylenetetramine,CS2 and ClCH2COONa and characterized by FTIR and elemental analysis. Adsorption properties of the resin for Hg2+ were investigated under different conditions such as pH,temp…
The grain boundary segregation isotherms of several elements in NiCrMoV steel were recorded by Misra at 853 K and 883 K.It is found that parallel kinetics of segregation and simultaneous concentration maximum of Ni and Sn at grain boundaries were observed during isothermal process.The experimental phenomenon is analyz…
The reaction kinetics of MC polyamide 6 and MC polyamide 6/Kevlar fiber composites was obtained by differential equations of nonisothermal kinetics and modified by considering the temperature field.The reaction activation energy of MC polyamide 6 and MC polyamide 6/ Kevlar fiber composites changed from(90.3 kJ/mol) an…
Objective: To investigate the genotoxicity of medical collagen membrane applied in medical field.Methods: The chromosome aberration test of Chinese hamster lung(CHL) cells was conducted in collagen membrane extracts under the metabolic and non-metabolic activation systems.Results: The chromosome samples were collected…
The hydrophobicity of organic coatings such as polypropylene,polyvinylidene fluoride,polystyrene,and paraffin on three kinds of metallic surfaces was investigated.The results indicated that polypropylene coating,which had the best hydrophobic effect with water contact angle of up to 140o,could greatly improve the hydr…
OBJECTIVE To develop the ribavirin in situ thermosensitive gel as the opthalmic drug delivery.METHODS Ribavirin was selected as a model drug and the 17.7% poloxamer 407 was selected as the base meteral to develop a kind of in situ thermosensitive gels for ophthalmic use.RESULTS The reversible gelation behaviors of pol…
The poison effect of contamination is one of the main factors that impede the large-scaled commercialization of proton exchange membrane fuel cell (PEMFC). The effects of fuel contaminations in anode (CO,CO2,H2S,NH3 and carbon-hydrogen compounds) on the performance of proton exchange membrane fuel cell (PEMFC) were pr…
La2O2S:Eu3+,Sm3+,Gd3+ phosphors are synthesized by high temperature solid state reaction at a weak reductive atmosphere which is made by the activated carbon.XRD result shows that all the synthesized phosphors are La2O2S with a hexagonal crystal structure.The samples are characterized by laser-diffraction size analyze…
Analyzed the cause of breaching in urea prilling tower liner made in epoxy resin glass fiber reinforced plastics,brought forward effective measure for preventing liner from corrosion,accordingly,how to improve its function and service life.It could be a reference to similar project.
Typical riveted structure samples were designed and the ground parking environment of aircraft on-service was simulated.Pre-corrosion test under accelerated corrosion test environment spectra and constant-amplitude fatigue test after different corrosion time were carried out.Finally,the fatigue life characteristics on…
In this paper,poly3-hexyl-thiophene(P3HT) dissolves in different solvents as a active layer,and we made the photovoltaic devices.The device structure is the ITO/PEDOT:PSS/P3HT /Al.We analyzed the active layers made of P3HT dissolved in different solvents.Characterization of the active layers was characterized by atomi…
Transparent conducting Al-doped ZnO(AZO) thin films were prepared on common glass substrates by sol-gel spin coating method.The effect of annealing temperature and cooling rate on the structural, electrical and optical properties of AZO thin films were investigated by XRD,SEM,four-point probe method and UV-VIS spectro…
Composite strontium carbonates were added to AS41 melt to realize the inoculating effect of Al-Sr master alloy.The results indicate that composite strontium carbonates can decompose and produce Sr irons in the melts.During crystallization process,Sr irons absorbed in the growth interfaces of Mg2Si phases,and modified…
The research on the interior defects in three types of rolled shafts(such as solid part,hollow part,hollow part with mandrel) during three-roll cross wedge rolling(CWR) was researched.The results show that there is a ring zone with the distinct crack near the center of solid part,the ring defects are effectively avoid…