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。
Organic base of polyethylene polyamine was added directly to the casting solution of poly(vinylidene fluoride)(PVDF).PVDF ultrafiltration membrane was prepared by using L-S phase inversion technique.Then,the structure and properties of the prepared membranes were characterized by means of IR,SEM,contact angle test,et…
In order to study the effect of cathodic protection potential on coating stripping,the protection potential was improved,the on potential and instant-off potential data of buried pipline were collected,the distance after coating stripping was measured.The results show that when the instant-off potential is-1.2 V,the o…
The modified unsaturated polyester with molecular chain containing bisphenol A group and polyurethane chain-segments was synthesized by molecular design.The product structure was characterized by infrared spectroscopy and the mechanical properties,acid and alkali resistance,thermal and electrical performance of the pr…
Methods to determine the process parameters for producing some common fabrics on GA747 loom are introduced.Back rest height can be adjusted to 90~95mm with shed angle 285°~290° in producing T/CJ 65/35 13×13 433×299 fine plain cloth.Back rest height can be adjusted to 110~120mm with shed angle 310° in producing C 28×28…
The advantages of self-making brighteners for acid copper plating were described. The problem and improvement of the simplest brightener formulation comprising M (2-mercaptobenzimidazole), N (ethylene thiourea), SP (sodium 3,3′-dithiobispropanesulfonate), and P (polyethylene glycol) were introduced. The formulation of…
Biomass chars were prepared under different pyrolysis temperatures,pyrolysis rates(rapid and slow pyrolysis) and steam activation temperatures from wheat straw and rice husk;their surface area and pore structure parameters were measured by nitrogen sorption at 77 K.The effects of pyrolysis temperature,pyrolysis rate,s…
In this paper the main preparation methods of chitosan micrsopheres are reviewed,including emulsion-crosslinking method,drop-sphere-forming method,spray drying,ionic crosslinking,precipitation method and so on.The application of microspheres in water treatment for adsorption of metallicion,chemical dye and other conta…
The mono polyethylene glycol maleate(MPEGM) was prepared by direct esterification of maleic anhydride(MAH) and polyethylene glycol(PEG) using p-toluene sulphonic acid(PTSA) as catalyst.The condition on preparation of MPEGM was determined by the orthogonal experiment.Effect of reactant molar ratio,Catalyst dosage,react…
The coupling reaction of ethane dehydrogenation with reversed water-gas shift reaction over Cr/SiO2 catalysts was studied.The Cr/SiO2 catalyst promoted by Mn oxide has already been found to be active and selective in the reaction at around 740 ℃,with the selectivity to ethylene of about 99.7% at 47.7% ethane conversio…
Three caged phosphate(trimer) microparticles were mixed magnesium hydroxide(MH),aluminium hydroxide(ATH),and silicon dioxide,and formed three composite flame retardants.The trimer was also encapsulated with above inorganic substances,which formed three capsule flame retardants.The flame retardancy of the two types of…
OBJECTIVE To prepare and characterize 9-nitrocamptothecin incorporated egg phasphatidylcboline-sodium deoxycholate mixed micelles(9-NC EPC/SDC MMs).METHODS 9-nitrocamptothecin mixed micelles(9-NC MMs) were prepared using the co-precipitation method.A optimized formulation was obtained by single-factor method,which was…
Objectve To investigate the influence of Cynanchi paniculati paeonol on the expression level of rabbit knee articular cartilage of osteoarthritis MMP-1 and TIMP-1.Methods 40 healthy adult male rabbits were randomly divided into normal group,control group,saline group,triamcinolone acetonide group,Radix Cynanchi panicu…
Combustion and emission characteristics of refuse derived fuel(RDF) were experimental studied in a tubular high temperature furnace.The results showed that:1 The increase of plastic proportion in RDF and oxygen concentration in combustion air lead the increase of NOx emission;but under the pure oxygen environment of R…
Objective To explore catalytic oxidation of gaseous formaldehyde over activated carbon-supported platinum catalysts(Pt/AC) at room temperature.Methods Pt/AC catalysts were prepared by liquid reduction method using NaBH4 as the reducing agent.The effect of Pt loading(0.1%,0.5% and 1%) on formaldehyde removal was invest…
An oligomeric phosphate ester non-formaldehyde flame retardant containing hydroxyl was synthesized from DMMP and glycol,and its structure was characterized by IR,1H-NMR and 31P-NMR.By discussing the reaction conditions,the optimal synthesis process was obtained.The cotton fabric was finished by the flame retardant and…
The collagen of pig skin has been extracted by using pepsin.The extraction rate of collagen determined by measuring hydroxyproline content was 44.46 %.The collagen was hydrolyzed in pepsin.The antioxidant activity of the hydrolysates was studied on time,enzyme amount,substrate concentration by the index evaluation of…
This paper introduced the industry application of recovering sulfuric acid from copper smelting waste acid by diffusion dialysis in a copper hydrometallurgy factory of Fujian.After the processing of sand filter-security filter-diffusion dialysis,the recycling acid back to the workshop ofextraction electrowinningand th…
ZnO seed layer film was prepared by DC magnetron sputtering. The effect of O2/ Ar ratio and annealing temperature by seed layer microstructure and morphology was investigated. ZnO nanorod array was grown on seed layer film using chemical bath deposition method, and the effect of solution concentration and seed layer o…
Spherical SrMoO4∶Eu3+ phosphor was prepared by spray pyrolysis.The influences of temperature on phase composition,microscopic morphology and fluorescent performances of the SrMoO4∶Eu3+ phosphor were investigated.The results indicated that pure SrMoO4 phase could be obtained at different temperatures.Part of SrMoO4 par…
The polycarboxylate based superplasticizer was synthesized by water solution copolymerization of acrylic acid(AA),sodium methyl acryl sulfonate(SMAS) and allyl polyethylene glycol(JFB-23).Ammonium persulfate(APS) was used as the initiator.The mole ratio of monomers,the dosage of initiator,the polymerization temperatur…