Materials Literature
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Objective To prepare PVA/CS porous hydrogen designed for cartilage defect repair.Method PVA/CS porous hydrogen was prepared by polyvinyl alcohol(PVA),chitosan(CS),and Polysorbate-80(Tween-80).The hydrogen preparation process consisted of emulsifier-foaming,freeze-drying and surfactant-cleaning.The porous hydrogen were…
Physicochemical properties, development status and production method process of aluminum dihydrogen tripolyphosphate were introduced. Research progress of powder, surface modification and application in anti-corrosive paint of aluminum dihydrogen tripolyphosphate in domestic were summarized.
With alkali lignin(L) and polyvinyl alcohol(PVA) as primary material,glutaraldehyde as crosslinker,alkali lignin/PVA cross-linked reaction film was prepared by casting.The process conditions were determined by single-factor test.The reaction film was characterized by FT-IR and SEM.The optical performance of reaction f…
The relationship between the interpore of anodic aluminum oxide( AAO) template and the influencing factors of electrolyte,temperature and oxidation voltage etc. was researched and summarized in this paper. It was pointed out that the interpore was influenced mostly by electrolyte type and oxidation voltage,and least b…
The growth problems in CZ-Si crystal occurs frequently in silicon single crystal growth due to dislocations,has seriously affected the quality of crystal silicon and the performance of the device,reducing the photoelectric conversion efficiency of solar cells.In order to analyze the growth problems in CZ-Si crystal,wi…
CL-18with particle size of about 5μm was synthesized via three-step reaction of azide,denitrification cyclization and addition of amino using 1,3,5-trinitro-2,4-dichlorobenzene as raw material.CL-18 obtained was refined to 1.51μm by a mechanical polishing method,and its specific surface area was 5.237m2/g.The narrow p…
Adsorptive desulfurization is interested for its low investment cost,moderate operating conditions.The key for its technical development is to look for solid adsorbents with large capacity,high selectivity and good regeneration properties.Advances in solid adsorbents for desulfurization of vehicle fuel oil,including c…
It is rather difficult to process LiB3O5(LBO) nonlinear optical crystal by ultraprecision machining due to its soft and brittle properties.The LBO crystal(110) surface was polished by using a fixed abrasive polishing technology.The effects of acidic,neutral and alkaline slurry pH regulator and pH value on the removal…
The organic-sulfonate flame retardant(SFR)was blended with PC,the effect of content of SFR on the flame retardancy and mechanical properties were measured.The results showed that LOI values increased almost linearly with the mount of SFR,from 26%to 33.8%.There was nearly no change in the tensile strength and the flexu…
In order to utilize agricultural stalk resources sufficiently,cotton stalk bark was extracted by alkali treatment at normal pressure and temperature to produce cotton stalk fiber.The effects of alkali concentration,extracting temperature and time on weight loss of cotton stalk were investigated to optimize the extract…
In order to study the interfacial reaction of carbon fiber surface coating in the process of preparing composite materials,an experimental method based on dynamics was adopted.Different DSC curve will be obtained from the reaction enthalpy measurement of resin and curing agent,resin and sizing agent,sizing agent and c…
MoS2 lubricants were used as additives in oils and grease to improve the antifriction,antiwear and extreme pressure properties.After adding MoS2 in metal and alloys,the service life of metal and alloys were significantly prolonged.Recent studies have been focused on synthesis and application research of MoS2.The lubri…
The dynamic analysis on the main reducer of ZFYO raise drill in stable operation mode was conducted. It was found that the pinion and the gear carried different stress while they were meshing in normal operation mode. The gear was determined as the one carrying the larger stress, and variation course of the dangerous…
Silicon carbide nanowires were synthesized by mixing formaldehyde resin carbon and nanometer silicon dioxide(atomic Si/C ratio, 1∶1) under cell voltage of 2.0 V in molten CaCl2at 900 ℃. The morphology,structure and chemical composition of the samples prepared by electro-reduction method were characterized by field-emi…
3,4-Bis(3-cyanofurazan-4-oxy)furazan(FOF-12)was synthesized via the reactions of hydrolysis,neutral- ization and etherification using dinitrofurazan as raw material with a total yield of 47.4%.The single crystal of FOF- 12was cultured in 5/2-petroleum/dichloromethane mixed solution.Its structure was characterized by s…
The effect of interface barrier between TCO and amorphous silicon on the photovoltaic characteristics of TCO/a-Si:H(p+)/a-Si:H(i)/c-Si(n) /a-Si:H(i) /a-Si:H(n+) /TCO heterojunction solar cell was simulated by AMPS-1D software developed by the Pennsylvania State University.The results indicate that with the higher inte…
The corrosion behavior of X80 pipeline steel with strain-based design was studied by the electrochemical measurement,weight loss experiment and copper accelerated acetic acid salt spray test. The result shows that in the electrochemical experiment,the X80 pipeline steel with strain-based design has a better corrosion…
The purpose of this article is how to eliminate slab cambering at a slab sizing press in the hot rolling steel production line in some Chinese steel plants. A finite element model of slab sizing pressing was established with the finite element software LS-DYNA. Slab cambering was analyzed at different slab center-line…
The production of piggery biogas slurry was huge in China,and the concentrations of nitrogen,phosphorus and organic pollutants were difficult to meet the discharge standard,and so advanced treatment was necessary. This paper introduced the quality characteristics of biogas slurry. Different treatment methods were comp…
We employed meberane dialysis to prepare curcumin-loaded micelles and addressed the impacts of drug dosage,dialysis time and solvent on drug-loading,encapsulating efficiency and particle parameter to investigate physical and chemical properties and preparation of curcumin-loaded micelles. We also examined their physic…