Materials Literature
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In-Situ composites of ZA40-1.5wt%Si、ZA40-3wt%Si、ZA40-4.5wt%Si and ZA40-6wt%Si alloys were obtained by using in-situ fabrication technique.The fabrication technique of silicon particle reinforced Zinc-based in-situ composites with fine silicon particle distributed uniformly.Microstructures of in-situ composites were an…
One-component acetoxy-cured RTV silicone sealant was prepared with α,ω-silanol terminated PDMS with viscosity of 80 000 mm2/s,fumed silica,petroleum distillates,acetoxy cross-linker,catalyst and other additive.The influence of petroleum distillates on the performance of the sealant was studied.Results showed that as t…
The friction and wear properties of wear-resistant fluorophlogopite glass ceramics sliding against carbon steel at various loads and sliding velocities were evaluated on an MPX-2000 ring-on-pin friction and wear tester.The morphologies of the worn surfaces of the glass-ceramics were observed on an optical microscope,f…
A layer of compact VC coating was prepared on the substrate of T10 tool steel with TD process,and its morphologies and the distributions of chemical element were analyzed with SEM and EDS,respectively.The thermodynamics and dynamics of VC coating forming process were researched.The results show that the carbide coatin…
The flame retardancy and physical properties of halogen-free flame retardant ethylene propylene diene monomer(EPDM) rubber using melamine cyanurate(MCA) as flame retardant,aluminium diethylphosphinate(ADP) and aluminium phosphinate(PAH) as flame retardant synergists were investigated.The results showed that,when the a…
The different temperature and time parameters were adopted in the vacuum stress relieving annealing processes of TC18 titanium alloy.The evolution of mechanical properties and residual stress was researched,the microstructures and SEM images of fracture surfaces were also observed.The results show that,after the vacuu…
Through intruding sulfonic acid groups on polyaniline backbone,water-solubility of polyaniline was improved.The sulphonated conditions and the effects of it to sulphonated polyaniline were discussed.The experiment indicated that polyaniline,the amount of chlorosulfonic,reaction time,and sulfonation time were greatly a…
AZO films are deposited onto the glass substrates by DC magnetron sputtering method.The influences of oxygen flow on optoelectronic properties and microstructure of AZO are studied.The results show that oxygen flux can dramatically affect the optoelectronic properties and crystalline status of AZO films.The films have…
In order to improve the flame resistance of Poly(ethylene-co-vinyl acetate)(EVA) thermoplastic elastomer,the flame retardant systems of melamine polyphosphate/pentaerythritol(MPP/PER) and layered double hydroxide(LDH) were used.The results showed that when the mass ratio of EVA/MPP/PER/LDH was 60/20/10/10,the flame re…
Polyethylene glycol(PEG) and Polybutylene succinate(PBS) were used as toughening agents to improve the toughness of polylactic acid(PLA)/sisal fiber(SF)composite materials.The PLA/SF composite was blended with the toughening agents,and then the PLA/SF composite was prepared by compression molding.An orthogonal experim…
Aging treatment was applied to 2205 duplex stainless steel samples at 590℃.The microstructure of these samples was investigated by optical microscopy(OM),environmental scanning electron microscope(ESEM) and transmission electron microscopy(TEM).Intermediate phase began to precipitate after aging for 48 h,and the preci…
The compound 5-(2-hydroxy-1-naphthaldehyde-4-naphthyleneimine)-10,15,20-trinaph-thylporphyrin was at first synthesized,and then it reacted upon metal acetates to yield three metal(i.e.,zinc,copper and cobalt) complexes,respectively.Their structures were characterized by elemental analysis,UV-Vis,IR,1HNMR and MS.
Horseradish peroxidase(HRP)was immobilized on the surface of chitosan via glutaraldehyde crosslinking.Then a graft copolymer of degraded starch and acrylamide was synthesized by the initiation of enzyme catalysis system composed of chitosan-immobilized HRP/H2O2/acetylacetone(ACAC).The structure of the copolymer was an…
The permittivity and permeability of left-handed material both are negative.When electromagnetic wave is propagating in this medium,the electric field,magnetic field and wave vector conform to the left-hand screw rule.It means that the direction of phase velocity is contrary to the direction of group velocity.The refl…
The effects of coiling process on grain size,texture,core loss and magnetic induction of a new cold rolled non-oriented electrical steel with copper were investigated.The results show that there are mainly {111},{112},{100} and {110}001 texture.Coiling at 550℃and keeping for 2～3 hours,the {100} texture is enhanced,mag…
Densities and compressive strength of plastic-bonded explosive(PBX) samples pressed by compression molding method reduce with the increasing of the packing amount of PBX molding powders,which indicates the stress gradient is in existence in sample during pressing.The reason that densities and compressive strength of P…
A series of aqueous polyurethane emulsions was prepared by acetone method using the polyesters with high crystallinity as the soft segments.The effects of the structure and molecular weight of poluols and the molar ratio of polyols to compound containing ionic and the crystallinity,tackness,water absorption and dry fi…
KH-570 modified silica sol was modified by methacryloylpropyl trimethoxysilane(KH-570) with the emulsifier to replace the cosolvents.The effects of the pH value,the kinds and the amount of the emulsifier on the reaction stability of the KH-570 modified silica were investigated.The structure of KH-570 modified silica s…
The causes for out-of-tolerance of dimensions, such as out-of-tolerance of rib spacing, out-of-minus-deviation of inner dimension, out-of-plus-deviation of cross rib height, no longitudinal rib existing, out-of-plus-deviation of longitudinal rib, partial out-of-plus-deviation of longitudinal rib when one-strand rollin…
The design principles and production processes of the business casual series denim fabrics were discussed,including alginic viscose,aloe fibre,jade fibre and pearls fibre denim fabric.The material characteristics,using principles of weave construction and tightness on these fabrics were introduced in detail.The proble…