Materials Literature
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In order to upgrade quality of the resultant yarn and reduce the yarn defect including cotton neps,approaching is done into the impact of the press block on the quality of the resultant yarn.Comparative analysis is done to the application effect of the press bar with profiled surface.It proves that application of the…
To enhance the efficiency of membrane separation in separating oil from water, and to decrease the membrane fouling with oil, this paper studied the treatment of oily field injection water by Ce-doped nonstoi-chiometric nanosilica (modified nanosilica)-polysulfone (PSF) composite membranes. After the change of the ten…
Based on exeperiments,a method was described for the eliminating the interference of Gold and mercury with the N-allyl-N′-(sodium-p-benzenesulfonate)thiourea in the indentification of barium using Rhodizonic acid sodium salt?.Comparing with the traditional method,the new method has some advantages.It is simple and can…
In order to improve the dispersion of nano-SiO2 and increase the compatibility of nano-SiO2 in the polyurethane sealants,the nano-SiO2 / polyurethane sealants were synthesized with TDI and PPG modified nano-SiO2 by in-suit polymerization. Characterization of the modified nano-SiO2 was made by IR. Results showed that T…
Poly(maleated rosin ethylene glycol ester) was synthesized from gum rosin.The polymer was characterized by IR and it's molecular ranged from 50 000 to 70 000.Studies on adsorption of PMGE for metal ions show that PMGE can coordinate with metal ions Cu2+,Fe3+,Cd2+,Hg2+Pb2+,Ag+and etc.Adsorption capability(mgMn+/g PMGE)…
The bar material of GH4049 containing W inclusion was made for different aero parts such as blade and so on.In order to avoid the parts containing of W inclusion being used in aero-engine,this paper proposed an X-ray inspection method for finished or semi-finished products,and through analysis and test,the feasibility…
A new compound[(H_5PMo_(12)V_2O_(46))(bpy)_2](1)[bpy=4,4'-bipyridine],has been obtained from hydrothermal reaction by PMo_(12) V_2O_(46)~(5-) and bpy mixed ligands,and structurally characterized by IR,TG and single-crystal X-ray diffraction.Result reveals that compound 1 belongs to monoclinic system with C2/m space gr…
In order to study the friction and abrasion behaviors of the cold rolled Q235 steel /45 steel under dry friction test conditions,the friction and abrasion tests are made on the M-2000 friction and abrasion tester under different conditions such as uniform velocity and fluctuating load,equipollent load and varying velo…
Titanium phosphate mesoporous materials were prepared by use of the sol-gel template method combined with the calcination method. We studied on calcination temperature which has an influence on mesoporous structure and electrochemical performance of the titanium phosphate mesoporous materials. The samples were charact…
Cordierite monolithic catalysts were prepared by loading the industrial hydrodesulfurization catalyst FH-UDS.The structure of the catalysts was characterized by means of XRD,N2 adsorption/desorption measurements,SEM and XPS.Theircatalytic performance in hydrodesulfurization(HDS) was evaluated in a fixed bed reactor by…
Tantalum films of 100-nm thickness were deposited on GCr15 bearing steel by magnetron sputtering.The films were implanted to different doses of 50 keV carbon ions by plasma-based ion implantation.Wear resistance test were performed on ball-disk friction tester with Φ6 mm GCr15 steel balls.X-ray diffraction patterns sh…
The application of SSBR T2530 in tread compound of semi-steel radial tire was experimentally investigated.The results showed that,by using SSBR T2530 instead of ESBR1712 by equal weight,the Mooney viscosity of compound increased slightly,the scorch time reduced slightly,the curing rate increased;the stress at 300% elo…
Four new porphyrin-5-fluorouracil compounds were designed and synthesized with yields of 27.1%~58.3% and mp300 ℃.The reaction conditions were optimized,and the separation method of the target products was explored.The compositions and structures of these compounds were confirmed by IR,UV-Vis,1H NMR,and MS.The antitumo…
The physicochemical properties of chitosan were introduced,the storage and preservation of chitosan and its mechanism were reviewed,and the application of chitosan on the fruit and vegetable fresh-keeping was summerized.
Carbon nanotubes(CNTs)were synthesized at different pressure in He/C 2H 2 gas mixture by arc discharge.The morphologies of CNTs were characterized by field emission scanning electron microscope(FE-SEM),field emission scanning and transmission electron microscope(STEM),X-ray diffraction(XRD)and Raman spectroscopy.Optic…
With the 105mm simulated armor piercing(AP) ammunition,this paper focused on investigating the influence of effects of thickness on the ballistic properties of such armors.DOP method was used to evaluate the ballistic properties of composite armors.It was found that properties decreased with thickness however at verti…
ZnO films are deposited on SiO2/n-Si and glass by RF magnetron sputtering.The effect of Ar/O2 ratio on properties of ZnO film is studied.The ZnO film deposited under Ar/O2(2∶3) has a relatively better preferential c-axis orientation.The grain size augments with Ar/O2 ratio increasing.The films exhibit a high transmitt…
The aluminate cement clinker was successfully synthesized from starting materials of barium carbonate,alumina and calcium carbonate by designing mineral phase composition sintered at different temperatures. The formation mechanism of cement clinker was investigated by XRD and SEM. The results show that BaAl2O4 is main…
During production,it is often found that there are defects on the surface of bearing rings with the shape of round or long round and in black,but they aren't found inside of material.Through examining the defects characteristic and analyzing their microstructure,it is found the defects are a kind of surface partial co…
Well-crystallized MgAl-CO3-LDH and CoAl-CO3-LDH crystals were synthesized hydrothermally using the urea-decomposition method.Crystals were transformed to NO-3 or Cl-salts by ion exchange in acid-salt solutions,and due to high ion-exchangeability of these types of LDHs,2-bromobutyric anion intercalated easily into inte…