Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
A new heteroercyclic compound,isonicotinaldehyde thiosemicarbazone(INT),has been synthesized.The inhibition efficiency for Q235 steel in 1 mol/L HCl solution was evaluated by means of mass loss,potentiodynamic polarization and electrochemical impedance spectroscopy.Then,the surface morphology was observed by scanning…
The Ti3SiC2 composites process excellent toughness,high flexural strength,wear and oxidation resistant,good electrical conductivities,machinability and damage tolerant.These excellent properties of Ti3SiC2 composites originate from one or two secondary phases activating with Ti3SiC2.So the Ti3SiC2 composites are hopin…
Graphene oxide modified phenolic resin was synthesized via in-situ polymerization,using which phenolic foam was prepared.The mechanical property,thermal stability,and microstructure of the foam were characterized using FTIR,universal testing machine,TGA,and SEM.It showed that the cell size of phenolic foam loaded with…
The macromonomer,methoxy polyethylene glycol methacrylate ester(MPEGMA),used for polycarboxylate superplasticizer was prepared by esterification of methacrylic acid(MAA) and methoxy polyethylene glycol(MPEG1000),using p-toluene sulfonic acid(PTSA) as catalyst and phenothiazine(PTZ) as inhibitor,under the condition tha…
Carboxymethyl mung bean starch was synthesized from mung bean starch with chloroacetic acid as the etherifying agent and ethanol as solvent.The process conditions were optimized by single factor test and orthogonal array design methods using 20 g mung bean starch as the criterion and the effects of NaOH content、chloro…
Some new casting techniques for high-performance magnesium alloys were introduced,including vacuum die casting,pore-free die casting,squeeze casting,semi-solid thixomolding technology,the continue rolling-casting,casting process with vacuum and low pressure and liquid combination process of die casting and forging.The…
By means of the process of cryogenic treatment combined with drawing temper for Cr12MoV steel,the effects of microstructure and mechanical properties of Cr12MoV steel were studied by micrographic analysis and hardness,ballistic work and bending strength,mechanical properties test. The results show that Cr12MoV steel h…
The paper studied on the flufenacet's synthesis process, which is greatly improved: aminothiourea is taken as the raw materials, cyclized with trifluoroacetic acid to generate 2-amino-5-trifluoromethyl-1, 3, 4-thiadiazol, then the product 2-chloro-5-trifluoromethyl-1, 3, 4-thiadiazole is got through diazotization, fin…
Several printing parameters is very important to printing quality in the printing of Solar cells.This article focus on the effect of several printing parameters such as printing height、printing speed、printing pressure to printing quality.
Using nitrile rubber(NBR) and polyvinyl chloride(PVC) as the main material,azodicarbonamide(AC) as the foaming agent,antimonous oxide(Sb2O3) and decabromodiphenyl ethane(DBDPE) as the flame retardant,the flame-retardant NBR/PVC foaming materials were prepared through one-step compression molding process.The effect of…
Chemical analyses of fine-grained powder samples from the Geological Survey of Japan(GSJ) trapped on a polycarbonate filter were carried out by particle induced X-ray emission(PIXE) to measure the chemical compositions of geological samples having small amounts(1 2 mg).The variability of results obtained by using a fi…
Biodegradable P(LLA-mb-BSA)multi-block copolymers were synthesized through chain extension and coupling of PLLA and PBSA prepolymers.The PLLA and PBSA prepolymers were prepared by melt polycondensation in advance,using PBO and HDI as binary chain/coupling extenders.The effects of reaction conditions on the chain exten…
The changes level of different radius carbon nanotubes were studied with Materials Studio calculation software based on density functional theory(DFT-GGA).Selecting translation vector is(8,0),the forbidden band width of the carbon nanotubes in a radius of 6.26 and it is optimized.
Calcium oxide(CaO) was prepared by directly pyrolyzing the precursor called calcium carbonate (CaCO_3),which was synthesized by solid-state ball milling reaction between NH_4HCO_3 and CaSO_4·2H_2O,the byproduct generated during the preparation of MnSO_4.The effects of NH_4HCO_3-to-CaSO_4·2H_2O molar ratio,milling time…
The electrochemical behavior of X80 steel in simulated soil solutions with hjgh pH(0.5 mol·L-1Na2CO3+1.0 mol·L-1NaHCO3) at different temperatures(25 ℃,45 ℃and 65 ℃) was investigated by potentiodynamic polarization,metallurgical microscopy and electrochemiscal impedance spectroscopy(EIS).The results of potentiodynamic…
The tool life of magnetized high speed steel drills was studied via means of experiments. The study result shows that during drilling,the magnetized drills were proved to have 1. 4 times longer tool life than conventional ones,and the stronger the residual magnetism after magnetization,the longer the tool life has. At…
The melting process of single screw extrusion of ultra-high molecular weight polyethylene(UHMWPE) was researched and analyzed with the method of screw ejection.Physical and mathematical models were also built to calculate the length of melt zone and radical distribution of melt layer.The calculation results were exper…
We presented the research status of non-halogen direct preparation of siloxane material technology and pointed out the research direction.Compared with inefficiency and high pollution of traditional preparation techniques,non-halogen directly preparation of silicone material by direct reaction of silica and alcohol or…
This paper has researched the microstructure,mechanics properties and macrostructure under different electric field of Ca-Ti-O particles ER fluid. The law of Ca-Ti-O particles ER fluid has been given. It is found that urea modification has major effect on shear stress and chain of particles.
The component difference of commercial oil produced by different processes can impact the evaluation of swelling properties of rubber materials.The standard oil for rubber test is an important material which can replace commercial oil to be used in the evaluation of rubber material swelling properties.ASTM formulated…