770results about How to "Good environmental stability" patented technology

The invention discloses a large-scale preparation method of a transparent super-hydrophobic / super-amphiphobic coating. The method comprises the steps of ultrasonically dispersing nano particles into an alcohol-water mixed system and carrying out hydrolysis and condensation reaction on the nano particles and fluoride-free or fluorine-containing organosilane under the acid or alkali catalysis action to prepare a transparent suspension liquid of a fluoride-free or fluorine-containing organosilane polymer-nano particle compound; and applying the transparent suspension liquid of the compound on the surface of a substrate material through spraying or dip-coating to obtain the transparent super-hydrophobic / super-amphiphobic coating with good performance. Preparation of the transparent super-hydrophobic / super-amphiphobic coating of 10-100m<2> can be completed within an hour; large-scale preparation of the large-area transparent super-hydrophobic / super-amphiphobic coating is achieved for the first time; the preparation method is low in cost and simple in process; and the prepared coating has excellent super-hydrophobic or super-amphiphobic property, relatively good mechanical stability, chemical stability and environment stability, and has a wide application prospect.

Disclosed are weatherable multilayer articles comprising (i) a coating layer comprising a block copolyestercarbonate comprising structural units derived from at least one 1,3-dihydroxybenzene and at least one aromatic dicarboxylic acid, (ii) a second layer comprising a polymer comprising carbonate structural units, (iii) an adhesive layer comprising a polyester with structural units derived from at least one glycol and at least one dibasic carboxylic acid, and (iv) a substrate layer, wherein the coating layer is in contiguous contact with the second layer, and the adhesive layer is in contiguous contact with the second layer and the substrate layer. Also disclosed is a method for making the multilayer article.

A method for improving the environmental stability of cathode materials used in lithium-based batteries. Most currently used cathode active materials are acutely sensitive to environmental conditions, e.g. leading to moisture and CO2 pickup, that cause problems for material handling especially during electrode preparation and to gassing during charge and discharge cycles. Binder materials used for making cathodes, such as PVDF and PTFE, are mixed with and / or coated on the cathode materials to improve the environmental sensitivity of the cathode materials.

Disclosed are weatherable multilayer articles comprising (i) a coating layer comprising a block copolyestercarbonate comprising structural units derived from at least one 1,3-dihydroxybenzene and at least one aromatic dicarboxylic acid, (ii) a second layer comprising a polymer comprising carbonate structural units, (iii) an adhesive layer comprising a polyurethane, and (iv) a substrate layer, wherein the coating layer is in contiguous superposed contact with the second layer, and the adhesive layer is in contiguous contact with the second layer and the substrate layer. Also disclosed is a method for making the multilayer article.

In a stacked display device with light-emitting units composed of organic layers and stacked together, the use of a stable material in at least a portion of a charge generation layer makes it possible to achieve improvements in environmental stability and also to attain an improvement in the efficiency of injection of charges from the charge generation layer into the light-emitting units. The display device can be readily fabricated. In a display device (11) provided with a plurality of light-emitting units (14-1)(14-2), each of which includes at least an organic light-emitting layer (14c), stacked together between a cathode (16) and an anode (13), and also with a charge generation layer (15) held between the respective light-emitting units (14-1)(14-2), at least a portion of the charge generation layer (15) is composed of an oxide or fluoride which contains at least one of alkali metals and alkaline earth metals.

A toner characterized by improved fixing performances with no or minimum oil application is formed of: (i) a binder resin, (ii) a colorant, (iii) a hydrocarbon wax, (iv) a resin composition formed by copolymerization of a styrenic monomer together with at least one of nitrogen-containing vinyl monomers, carboxyl group-containing monomers, hydroxyl group-containing monomers and (meth)acrylate ester monomers, in the presence of a hydrocarbon unit; and (v) an organometallic compound. The binder resin (i) comprises a polyester component in a proportion of at least 60 wt. % of the binder resin. The toner has a GPC molecular weight distribution including a weight-average molecular weight (Mw) of at least 4.0x10<4 >an a ratio Mw / Mn of at least 50 between the Mw and a number-average molecular weight (Mn).

A system and method are provided to detect target analytes based on magnetic resonance measurements. Magnetic structures produce distinct magnetic field regions having a size comparable to the analyte. When the analyte is bound in those regions, magnetic resonance signals from the sample are changed, leading to detection of the analyte.

A system and method are provided to detect target analytes based on magnetic resonance measurements. Magnetic structures produce distinct magnetic field regions having a size comparable to the analyte. When the analyte is bound in those regions, magnetic resonance signals from the sample are changed, leading to detection of the analyte.

Photopolymer-based dielectric materials are provided with methods for preparing the same. Composites and electronic devices including such dielectric materials also are provided.

A field effect transistor is provided including a gate electrode (15), a source electrode (13), a drain electrode (14) and a channel layer (11) to control current flowing between the source electrode (13) and the drain electrode (14) by applying a voltage to the gate electrode (15). The channel layer (11) is constituted of an amorphous oxide containing In and Si and having a compositional ratio expressed by Si / (In+Si) of not less than 0.05 and not more than 0.40.

A carbon nanotube paper is prepared from carbon nanotubes through adding them to acid, heating or thermal reflux, and / or ultrasonic stirring, removing impurity, diluting in water, filtering, washing the filtered cake, dispersing the carbon nanotubes in water by ultrasonic stirring, spreading on carrier, and drying. It has regular structure, high uniformity, purity and electric conductivity, and enough mechanical strength.

The invention provides an environment-friendly water-based nano coating material used for concrete protection, and a preparation method thereof. The environment-friendly water-based nano coating material comprises 15%-65% of an organic silane coupling agent, 0.5-10% of nano silica, 0.5-5% of nano titanium dioxide, 0.4%-4% of an organosilicon oligomer, 0.3%-3% of an emulsifier, 0.1%-0.6% of a bactericidal anti-algae agent, 0.01%-0.1% of a regulator, and the balance being deionized water. The environment-friendly water-based nano coating material used for the concrete protection takes advantages of a nanometer effect of nanoparticles and a hydrophobic effect of long-chain organosilicone coupling agent. The prepared environment-friendly water-based nano coating material used for the concrete protection has excellent protection performance.

A flexible, vapor permeable, liquid impermeable composite fabric comprising a ultraviolet light stabilized and thermally stabilized microporous-formable polyolefin barrier layer extrusion laminated to an ultra-violet light stabilized and thermally stabilized polyolefin nonwoven fabric, the composite of which has been incrementally stretched to induce sufficient moisture vapor transmission characteristics while maintaining adequate resistance to water penetration, and methods of making the composite. This composite may be further laminated to one or more layers of either woven or nonwoven materials offering strength and environmental resistance characteristics sufficient for various outdoor applications including covers and building construction products. Embodiments of the above mentioned components have been shown to offer improved liquid resistance, environmental stability, and abrasion resistance as compared to existing commercially available materials.

The invention comprises a piezoelectric baseboard and two pairs of interdigital electrodes; said interdigital electrodes are located on the piezoelectric baseboard to construct both parallel acoustic surface wave measuring channel and reference channel. It features the following: coating a sensitive film on the measuring channel; coating a temperature compensation film on the reference channel.

Disclosed is a toner including toner particles each including a core portion that contains a binder resin, and a surface layer containing an organosilicon polymer, in which each of the toner particles contains a polyvalent metal element having a resistivity of 2.5×10−8 Ω·m or more and 10.0×10−8 Ω·m or less at 20° C., and when the toner particles are subjected to X-ray fluorescence analysis, a net intensity originating from the polyvalent metal element is 0.10 kcps or more and 30.00 kcps or less.

A fiber collimator is provided, comprising at least two optical components, one of the optical components (e.g., an optical element such as a collimating lens or a plano-plano pellet) having a surface that has a comparatively larger cross-sectional area than the surface of the other optical component(s) (e.g., at least one optical fiber). The optical components are joined together by fusion-splicing, using a laser. A gradient in the index of refraction is provided in at least that portion of the surface of the optical element to which the optical fiber(s) is fusion-spliced or at the tip of the optical fiber. The gradient is either formed prior to or during the fusion-splicing. Back-reflection is minimized, pointing accuracy is improved, and power handling ability is increased.

Solution-processable organic n-type semiconductor materials are provided with processes for preparing the same. Composites and electronic devices including the organic n-type semiconductor materials also are provided.

A polyhydroxyalkanoate comprises a unit of formula (1): —(O—CH((CH2)mSASO2R)CH2C(═O))— wherein R is selected from the group consisting of OH, a halogen atom, ONa, OK, OCH3 and OC2H5; A represents a substituted or unsubstituted aliphatic hydrocarbon structure; m is an integer number selected from 1 to 8; and in the case where a plurality of units exist in the same molecule, R, A and m in one unit can be different from them in another unit respectively. A method of producing the polyhydroxyalkanoate comprises the step of reacting a polyhydroxyalkanoate comprising a unit of formula (18): —(O—CH((CH2)mBr)CH2C(═O))—, wherein m is an integer number selected from 1 to 8, and in the case where a plurality of units exist in the same molecule, m in one unit can be different from that in another unit, with at least one type of compounds of formula (19): HS-A1-SO2R15 wherein R15 is selected from the group consisting of OH, a halogen atom, ONa, OK, OCH3 and OC2H5 and A1 is a substituted or unsubstituted aliphatic hydrocarbon structure, and in the case where a plurality of types of compounds exist in the same molecule, R15 and A1 in one unit can be different from them in another unit respectively.

The invention discloses a multi-shell-structure quantum dot composite particle, and a high-fluorescent-brightness quantum dot probe and a preparation method thereof. The composite particle uses a quantum dot as a core, a semiconductor shell is coated outside the quantum dot, and a composite silicon dioxide shell is coated outside the semiconductor shell. A biological molecule can be connected to the composite silicon dioxide shell to form the probe. The composite particle and probe with required fluorescent wavelength can be obtained by controlling the reaction conditions. The method has strong operability. The obtained composite particle has favorable chemical and physical stability, biocompatibility and environmental stability. The formed probe has high stability and high fluorescent brightness, can have high application value in the fields of medicine and biology, and can be used as a common fluorescent probe, immunologic detection agent or any other biosensor.

The invention belongs to the field of nanotechnology, and particularly relates to a synthetic method and application of a polydopamine-modified carbon nanotube composite material. The synthetic method comprises the following steps in sequence: dispersing carbon nanotubes into dopamine-containing aqueous solution; quickly adding trismetyl aminomethane buffer solution into the dopamine-containing aqueous solution in which the carbon nanotubes are uniformly dispersed under magnetically stirring; mechanically stirring for 10 hours at room temperature; washing by water; and centrifugally separating to obtain the carbon nanotube composite material of which the surface is modified by polydopamine, wherein the carbon nanotube composite material shows high dispersibility in water. The polydopamine-modified carbon nanotube composite material adopts the carbon nanotubes as the framework, and therefore, a large specific surface area is provided; the polydopamine-modified carbon nanotube composite material is excellent in environmental stability and biocompatibility and high in dispersibility in water; the synthetic method is simple and low in cost; and the polydopamine-modified carbon nanotube composite material can be used as the substrate for analyzing metabolite micromolecule under high-throughput MALDI-TOFMS (Matrix Assisted Laser Desorption Ionization Time of Flight Mass Spectrometry).

An energy-efficient transparent solar film is presented. The solar film has a first film layer with metal nanostructures. The metal nanostructures have plasmon resonances in wavelength bands greater than, or both less than and greater than visible wavelengths, depending on size and shape. The metal nanostructures have no plasmon resonance at visible wavelengths. In another aspect, metal oxide nanocrystals are formed with the first film layer. The metal oxide nanocrystals have absorption in a band of wavelengths less than visible wavelengths, and absorption in a band of wavelengths greater than visible wavelengths. Also provided is a solar film window and fabricating method.

The invention discloses a preparation method of a high-thermal-conductivity low-leakage phase-change composite. The method includes: taking a phase-change material and thermal-conductive filler in the mass ratio of 0.1%-1% for melt mixing at the temperature above the melt temperature of the phase-change material for 10min, and taking out the mixture for cooling prior to breaking into granules to obtain modified filler; taking the phase-change material and a support material in the mass ratio of 0.1%-10% for melting at the temperature above the melting temperature of the support material and the phase-change material for 20min, and taking out the molten materials for cooling prior to breaking the materials into granules to obtain a modified support material; adding the modified thermal-conductive filler and the modified support material in the proportion of 1:9-9:1 into the phase-change material counting for 40-50% of total mass for melting the the temperature above the melting temperature of the support material and the phase-change material for 30min prior to obtaining a mixed composite; pouring the mixed composite into a preheated mould, applying certain pressure to the mould, maintaining the pressure for 20min, and performing cooling and demoulding to obtain the high-thermal-conductivity low-leakage phase-change composite. Compared with the prior art, the preparation method has the advantages of simplicity, low cost and chip and available raw materials.

Processes for producing silver nanoparticles are disclosed. A reaction mixture comprising a silver compound, a carboxylic acid, an amine compound, and an optional solvent is optionally heated. A hydrazine compound is then added and the mixture is further reacted to produce the silver nanoparticles.

The invention belongs to the field of application of a nano material, particularly relates to a preparation method of a silver nanowire-zinc oxide composite transparent electrode and aims to simplify process, reduce cost and obtain the silver nanowire-zinc oxide composite transparent electrode with excellent light transmission and electrical conductivity, high wear resistance and environmental stability. The invention adopts the following technical scheme: 1, an ultra long silver nanowire is prepared by an improved polyol reduction method; 2, the silver nanowire is processed by a post-processing process; 3, a silver nanowire transparent conductive film is prepared; 4, zinc oxide nano particles are filled. The preparation method has various advantages of simple process, high repeatability, easiness for operation and control and the like.

A positively charged developer for development of electrostatic images, comprising positively charged toner particles and an external additive, wherein the positively charged toner particles are colored resin particles composed of aggregated and fusion-bonded particles of fine binder resin particles and fine colorant particles and having a shape factor SF-1 of 115 to 150 and a shape factor SF-2 of 110 to 140, and the external additive is an external additive containing positively charged inorganic particles subjected to a hydrophobization treatment with an amino group-containing compound, and a production process thereof.

The invention discloses application of polymerizable deep-eutectic solvents to preparing transparent conductive elastomers. Hydrogen bond receptors and hydrogen bond donors are mixed with one another at the temperatures of 60-100 DEG C to obtain the polymerizable deep-eutectic solvents, a molar ratio of the hydrogen bond donors to the hydrogen bond receptors is not smaller than 1:1, and the hydrogen bond donors comprise acrylic acid or methacrylic acid. The polymerizable deep-eutectic solvents, cross-linking agents and photoinitiators are mixed with one another to obtain mixed solution, and the mixed solution can be cured in polytetrafluoroethylene culture dishes under ultraviolet irradiation to obtain the transparent conductive elastomers. The application has the advantage that the transparent conductive elastomers are high in light transmission and conductivity, excellent in tensile property and bendability and good in environmental stability.