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。
Silk fabrics were modified with cationic modifier,some cationic groups were introduced to the surface or inter of silk fabrics.The dyeing and fixing rate of silk fabrics with reactive dyeing were improved.It was shown that the optimum process of silk modifying: the concentration of modifier 10?g/L,time 30min,temperatu…
By hydrothermal synthesis method,the thermally,hydrothermally stable and long-range ordered MCM-48 mesoporous molecular sieve was successfully prepared in short time at high temperature through the optimized synthesis conditions.The influences of the CTAB surfactant amount,crystallization temperature,crystallization t…
Based on the construction of the bottom sealing concrete of steel sheet cofferdam about the third stage diversion water pumping station of the Yangtze river,this paper expounds the construction technology that using commercial concrete as the bottom sealing concrete of the nearshore deep water foundation.The construct…
W-hexaferrites of Fe-poor formula BaZnxCo2-xFe15.5O27 were prepared using solid state sintering method.The electromagnetic properties of ferrite composite were deeply studied by changing the substitution of Zn and Co contents.The experimental results indicate that the composites with the Fe-poor ferrite possess lower…
Sinter single-roll crusher is an important component of the sinter production line,which operating environment and nature decides that it must possess properties of high-temperature resistance and abrasion resistance.First the invalid reasons and abrasive wear mechanism are studied aim at the problems of easy worn and…
This is a review about the research progress of hyaluronic acid (HA) in wound healing and its mechanism. HA physicochemical properties, metabolic pathway and its metabolites which related with wound repair were retrospectively reviewed and analyzed. HA plays an important role in debridement, anti-inflammatory, promoti…
The scaling behaviour of surface roughness evolution of microcrystalline silicon(μc-Si:H) films prepared by veryhigh frequency plasma-enhanced chemical vapour deposition(VHF-PECVD) has been investigated by using a spectroscopic ellipsometry(SE) technique.The results show that films deposited at Pg = 70 Pa,the growth e…
The infrared spectrum in 4000～400 cm-1 region and Raman spectrum in 3700～100 cm-1 region of 3,4-dichloro-1,2,5-thiadiazole were recorded experimentally.The geometry and vibrational frequencies were calculated by the density functional theory(DFT) with B3LYP complex function and 6-311++G** basis set.Based on the experi…
Silane coupling agent(Si-69,KH-590 and KH-550),titanate coupling agent(NGT-201) and dodecy sodium sucfate were used to modify nano-SiO2 surface.The effect of modification agents on the structure and mechanical properties of nano-SiO2/NR composites were investigated by determinations of the mechanical properties,the ap…
A pilot-scale test for XTC-sulfate trivalent chromium electroplating process developed by Xiamen University was carried out.The surface morphology,composition and chroma of the deposit were characterized by scanning electron microscope(SEM),energy-dispersive spectrometer(EDS) and CM-2600d Lab values tester.The effects…
EPA and DHA from marine fish oils can be much more effectively used through deep processing technologies.Purification of polyunsaturated fatty acids,new products of EPA/DHA and research on their stability were introduced.Deep processing technologies of marine fish oils were reviewed and prospected.The marine fish oils…
The essence of the property as an economic and legal categories, analyzes the problems of maintenance of property rights, subjects and objects of ownership, we formulate some principles of property rights.
The sample of transparent oxyfluoride glass ceramics was excited by a red pulsed laser which had a tunable wavelength between 602 and 660 nm. The fluorescence intensities of Tm3+ ion under different temperatures were measured, and the relationship between them was also recorded. It was shown that the upconversion emis…
Fe-Cu-Sn alloy was prepared by powder metallurgy using raw material of water atomized Fe-30%Cu alloy powder and Sn,Fe,Cu element powders as raw materials.The effects of raw materials,the Sn content(mass fraction) on relative density,impact toughness,hardness and transverse rupture strength were studied.The results sho…
The factors affecting the properties of the salix psammophila P-RC APMP were studied and suitable pulping conditions for salix P-RC APMP were presented in this paper from the point of a high brightness,optical properties,and pulp strength.The pretreatment conditions of salix P-RC APMP were as follows:NaOH charge 8%,H2…
In this review,the research progress of hydrogen peroxide cathodic catalysts in recent years was introduced according to the categories such as precious metals,transition metals oxides,and macrocycle complexes of transition metals.The performance of different catalysts and substrates were analyzed and compared.The cha…
PET fabric was treated with plasma,in which the thickness of fluorine containing finishing agents is 40 g/L,the time of plasma is 80 s,and the frequency of plasma is 1.3 kHz,its grade of water and oil repellent are 10 and 8.In the same condition of water and oil repellent finishing,the plasma treated fabric is more ex…
A silicon-halogen synergistic flame retardant tetrachloropropyl silicate was synthesized by using silicon tetrachloride and propylene oxide as raw materials.The effect of reaction time,temperature and ratio of reagents on product yield was investigated.The optimal conditions for preparation of tetrachloropropyl silica…
The influences of spinning process parameters and the key parts of rotor spinning on the yarn quality were discussed when 27.8 tex pure cotton yarn was spun through orthogonal tests.The optimum process combination of twist、rotor speed and combing roller speed was obtained through data analysis.The order of influence o…
By means of chemical composition analysis,fracture analysis,metallographic examination,mechanical properties testing and so on,the fracture reason of gear shaft of 42CrMo steel was analyzed.The results showed that the fatigue fracture was occurred in the gear shaft in using due to unreasonable heat treatment to reduce…