Materials Literature
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To explore a novel method which could make the polypropylene wood plastic composite much more effective,nontoxic,environmentally friendly and low cost,a new method was investigated in this research.By adding inorganic silicates and organic silicone rubber composite,a new composite was processed which could form cerami…
Taking 45 steel,titanium iron,pig iron as main raw material,in the atmospheric environment,Ti(C,N) particles reinforced Fe-based composite was prepared by in-situ reaction casting.And the friction and wear properties in the conditions of oil lubrication and dry friction,and the impact abrasive wear resistance of the c…
Fe-matrix composites reinforced by( Fe,Cr) 7 C 3 particulates were prepared by infiltration casting of pure Cr wire and white cast iron participating in in-situ reaction and subsequent heat treatment. The phase composition and microstructure of as-fabricated Fe-matrix composites obtained after different duration of he…
In this article,the author did a combustibility test of the flame retardant container through vertical method,and set the test standard.The influence of concentration and temperature of alcohol,drying along with wiping sequence on the chemical resistance of the flame retardant container was mainly studied.The study ca…
The production of succinic acid by bacterial fermentation has a great prospect for industrial application. In this study,the fermentative productions of succinic acid by recombinant Escherichia coli WS100(△ldhA,△adhE,△pflB,△poxB,△ackA) with different media were investigated. 4L NBS medium and corn steep liquor medium…
The PTFE sealing composite material was prepared by mould pressing and sintering process,applying carbon fiber as reinforcing fiber.The mixing technology was studied though the experiment of preparation.The experiment results indicated that four times were the best feeding frequency and 10min was the best stirring tim…
Co0.2Fe2.8O4 porous nanostructure microspheres were prepared by solvothermal reaction with the combination of the Ostwald ripening process.X-ray diffraction(XRD) and scanning electron microscopy(SEM) were used to characterize the structure and morphology of samples.The results showed the prepared monodisperse Co0.2Fe2…
The corrosion behavior of X80 pipeline steel base metal and weld specimens were studied by potentiodynamic polarization,electrochemical impendence spectroscopy and immersion test in 5%NaCl+0.5% acetum. The result showed that the open circuit potential of the weld sample is more positive than the base metal sample. The…
Objective To investigate the effect of receptor number and function of AMPA by depphosphorylated Tau protein. Methods The primary rat hippocampal neuron was cultured from neonate rats. DsRed plasmid and GFP labeled P301L mutant of human protein Tau gene were transfixed into 5 ~ 7 d primary cultures of rat hippocampal…
The measurement of low temperature specific heat provides us a great amount of information on the lattice and electronic properties. Many different designs and techniques have developed so far to conduct the low temperature specific heat measurement. In this project, a new relaxation colorimeter is designed to operate…
The surface tension coefficient was measured for different concentrations of soapy water at 20 ℃ by pul-apart method.The surface tension coefficient of soapy water was small compared with that of pure water,it decreased with the increase of soap concentrations,because surfactant had been added to the soap.The pull-apa…
Bulk Ni-Al2O3 catalysts was synthesized in the way of super-solubilization nanometer self-assembly.The bulk Ni-Al2O3 catalyst was characterized by X-ray diffraction(XRD) and the mercury porosimeter.The influence of affecting factors on physical properties of catalysts was investigated,such as the amount of urea and su…
HZSM-5 molecular sieves with different Si/Al molar ratios modified with multi-components such as Si-La,Si-Mg-La and Si-Mg-P-La were prepared by impregnation,and the change of acidity and pore structure of the catalyst was studied by X-ray diffraction,scanning electron microscopy,temperature-programmed desorption and N…
Styrene,butyl acrylate,and methyl methacrylate as the reaction monomers,acrylonitrile as the functional monomers,the core-shell polymerize technical synthesis of styrene-acrylic emulsion was studied.The amount of acrylonitrile,the ratio of hard monomer to soft monomer,emulsifier and temperature effects on the properti…
The SiC/multilayer graphene nanocomposites were prepared from the Polycarbosilane( PCS) through high temperature chemical vapor deposition. The TG-DTA,scanning electron microscopy( SEM),transmission electron microscopy( TEM),Raman spectroscopy( RAMAN) and X-ray diffraction( XRD) and other test methods were used to cha…
A simple method for Pd/OMC was reported in this paper.Moreover,the effect of the catalyst on Sonogashira reaction was evaluated.Its optimized reaction condition was finally presented.
VO_2 thin films have been a research hotspol in the field of laser protection materials because of their excellent thermochromic properties.The research progress of VO_2 thin films at home and abroad is overviewed.The main material preparation methods,principle of infrared laser protection and protection waveband of V…
The Aku 2 and the Akv have differences on impact absorbing energy and hardness number;they cannot be converted to each other.This paper analyze the test on 42CrMo in the three kinds of heat treatment conditions,and attempt to find some regularities and help to solve the practical problems in production inspection.
The high-precision differential format of movement interface was used to solve the two-dimensional Navier-Stokes equation.The pressure and velocity fields in the sharp wedge zone of collision points in the base-upset board installation were simulated at different explosives' detonation velocities.The pressure distribu…
Based on making process analysis of chemical industry standardwaterborne automotive coatings,make people have a more comprehensive understanding for waterborne automotive coatings.It is a guidance in the field of waterborne automotive coatings research and production.It is a reference for government departments in for…