Materials Literature
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In order to gain understanding of the effect of bamboo charcoal content and weave on the properties of bamboo charcoal fabric,in paired analysis,we used bamboo charcoal fabrics and polyester fabrics,including plain and twill weaves,to investigate the change of weft density on properties of the fabrics.At a probability…
A 2,4,6,8-tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane (D4Vi)-acrylate polymer latex has been prepared by the method of one-stage addition using 2,4,6,8-tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane (D4Vi),methyl methacrylate (MMA),butyl acrylate (BA) and acrylic acid (AA) as precursors. The effects of differen…
A novel and facile method toward a series of yellow water-borne polyurethane was developed by using an intrinsically colored diol in this paper.The yellow aqueous dispersion PCLD-HENA-PU was synthesized based on isophorone diisocyanate(IPDI), polycaprolactonediol(PCLD) and 2,2-dimethylol propionic acid(DMPA) using a y…
Objective To test and verify whether Ba-alginate-Poly-L-Ornithine-Alginate microcapsules(B-PLO-A) can improve the physical properties and biocompatibility of the traditional BPA microcapsules.Methods The B-PLO-A and Ba-alginate-Poly-L-lysine-alginate(B-PLL-A) microcapsules were made by the static generator.The physica…
Yb3+:Y2O3 nanopowders were synthesized by using the co-precipitation process from coarse Y2O3 powders, Yb2O3,nitric acid and NH3 · H2O.The properties of the powders calcined at different temperatures were characterized by TG/ DTA,XRD,SEM and fluorescence spectrum methods.The results indicated that moderate PEG used as…
The change of microbes in sealed pit mud during recycling process was studied.The results were summed up as follows: The quantity of aerobic bacteria,aerobic zygotomere,anaerobic bacteria,mold,yeast and actinomyceto reduced gradually with the increase of pit mud-using times,and the quantity of aerobic bacteria,aerobic…
To develop and characterize a new cancer target gene delivery carrier,which could be used as potential blood pool magnetic resonance ( MR ) contrast agents,a novel FAM-AGKGTPSLETTPC-COOH / poly(ether-amide)(FAM-13 /PEG /DTPA)copolymer (Ⅲ)with fluorescence probe was designed and obtained first from the reaction of the…
The pyrolysis characteristics of ordinary wallpaper and flame retardant wallpaper were studied by thermogravimetric analyzer under various combinations of different heating rates and atmospheres.The experimental results indicate that the range of pyrolysis temperature in air atmosphere shifts to lower temperatures com…
The carbon number distribution of n-paraffins in three 0# diesel fuels from Lanzhou petrochemical company,Daqing petrochemical company and Geermu refinery,respectively,and their cold filter plugging points(CFPP) before and after addition of pour point depressant(PPD) were determined.The wax crystal morphology in these…
Methods for the surface modification of calcium carbonate powders are introduced,such as local reaction modification,surface coating modification,high energy surface modification and mechanical chemical modification.The development prospects of surface modification of calcium carbonate powders are previewed.
Using the layer-by-layer deposition method,the CdSe-CuTAPPI composite films were obtained on quartz substrate with CdSe nanoparticles and meso-tetra-(4-trimethylaminophenyl) porphyrin copper iodide(CuTAPPI) molecules as assembly units based on electrostatic interactions.The structure,morphology and thickness of the fi…
The water-soluble photoluminescence controllable CdTe nanoparticles have been synthesized using thioglycolic acid(TGA)as stabilizer,whose PL ranges from 537 to 577 nm.As shown from TEM,XRD and FTIR,the prepared nanoparticles are of monodispersibility,narrow particle size distribution,and characteristic zinc blend phas…
A new organodisulfide 3-thienylmethyl disulfide has been successfully synthesized and its polymer poly 3-thienylmethyl disulfide was synthesized by electrochemical polymerization.The electrochemical properties of S-S bonds redox behavior in the disulfides have been investigated in 0.1 mol·L-1/CH3CN solution.The separa…
A series of CuO/CeO_2-MO (M=Mg,Ca,Sr,Ba) catalysts for water-gas shift reaction were prepared by co-precipitation method.The effects of alkaline-earth oxides as modifiers on the structural properties,redox properties and catalytic activities of the CuO/CeO_2 catalysts were studied in detail with the aid of XRD,N_2 phy…
This article introduces product positioning,process,product development of 610HFW unit of BaoShan Iron Steel Co.,Ltd.,which includes product specification of structural pipe,tensile property of structural pipe with typical wall thickness,product size and mechanical property of casing,product and mechanical property of…
Measured by Rubber Process Analyzer RPA2000,the storage modulus G′ of blend of thermoplastic polyurethane (TPU)/ethylene-vinyl acetate copolymer (EVM) showed increase with less dependence on strain and temperature,weaker Payne effect and similar dependence on frequency after dynamic vulcanization while the loss factor…
The enlarged natural gas primary reforming catalyst for synthetic ammonia has been characterized and evaluated.The results indicate the performance of the enlarged catalyst is equal to that catalyst produced in laboratory.The total carbon conversion is 48.45%,the mass ratio of carbon deposition is 0.012%,which is unde…
The H3PW12O40/Al2O3 heteropoly acid catalyst was prepared by volume impregnation method with Al2O3 as carrier,and characterized with IR,XRD and BET techniques.With the H3PW12O40/Al2O3 as catalyst,preparation of acrolein from glycerol was studied in a continuous fixed bed reactor.The results showed that the optimal con…
In the present paper,mixing time was determined in bubble columns of inside diameter 200 mm and 400 mm with and without internal parts within the superficial gas velocity(U_g) of 0.006—0.250 m/s and the high diameter ratios of 0.8—7.0 in the case of different structural parameters,such as aspect ratio(H/D) and sparger…
Lanthanide selenidoantimonate [Tb(en) 4]SbSe4.0.5en(en =ethylenediamine) was solvothermally synthesized by a reaction of Tb2O3,Sb and Se in en at 170 °C.The complex crystallizes in monoclinic crystal system space group P21 /n,with a =1.13831(15),b = 1.31201(17),c =1.6337(2) nm,β =92.413(2) o,V =0.24378(6) nm3,Z =4,Mr…