74results about How to "Little change over time" patented technology

Provided are a prepreg that is excellent in adhesiveness between carbon fibers and a matrix resin and long-term storage stability and achieves both excellent impact resistance and electrical conductivity in the thickness direction and a carbon fiber reinforced composite material. The present invention provides a prepreg formed by impregnating sizing agent-coated carbon fibers coated with a sizing agent containing an aliphatic epoxy compound (A) and an aromatic epoxy compound (B1) with a thermosetting resin composition containing thermoplastic resin particles (F) and conductive particles (G) in a mass ratio of 1:1 to 1,000 or conductive particles (H) in which a thermoplastic resin is covered with a conductive substance. An (a) / (b) ratio is within a predetermined range where (a) is a height of a component at a binding energy assigned to CHx, C-C, and C=C and (b) is a height of a component at a binding energy assigned to C-O in a C 1s core spectrum of surfaces of the sizing agent-coated carbon fibers analyzed by X-ray photoelectron spectroscopy.

The invention provides an antistatic surface protection film, the pollution to a pasted body is light, and the antistatic surface protection film is provided with excellent anti-stripping electrostatic properties without time dependent degradation. The antistatic surface protection film is formed in a way that a binder layer (2) composed of a binder composition is formed on one side of a base film (1) formed by a transparent resin, the binder composition comprises an acrylate-based polymer containing copolymers, (F) an isocyanate compound containing more than two functional groups, (G) a crosslinking accelerator and (H) a ketone-enol tautomer compound, a stripping agent layer (4) containing an antistatic agent is laminated on one side of a resin film (3) to form a stripping film (5), and the stripping film (5) is attached to the surface of the binder layer (2) through the stripping agent layer (4). The stripping agent layer (4) is formed by a resin composition, and the resin composition comprises a stripping agent taking dimethyl polysiloxane as the key component, a polysiloxane compound which is liquid under 20 DEG C and an antistatic agent, and the stripping electrostatic pressure of the binder layer (2) is lower than + / -0.6kV.

A thermosensitive Mn-Zn ferrite series is prepared from Fe2O3, ZnO, CuO and Mn3O4 through ball grinding for mixing, pre-calcining at 700-1100 deg.C, maintaining the temp for 1-4 hr, crushing, ball grinding, sieving, deposition, baking, adding polyvinyl alcohol solution and zinc stearate, stirring, die pressing and sintering at 90-1300 deg.C. Its advantage is excellent magnetic performance.

The invention relates to the technical field of protective films and particularly relates to a self-adhesive EVA (Ethylene-Vinyl Acetate) protective film and a manufacturing process thereof. The self-adhesive EVA protective film is formed by a film which is coextruded and adhered by a base film layer, a middle layer and a self-adhesive layer. Especially, due to the self-adhesive layer, adhesive force of the EVA self-adhesive protective film is moderate, so that the self-adhesive EVA protective film is easily stuck and torn; after the film is stuck, the change of the adhesive force along with the time is small, the self-adhesive EVA protective film can be stuck repeatedly without adhesive failure and residual foreign matters, and can be used in special and large-corner surfaces with a radian and without upwarping; since the specific material combination of the base film layer, the middle layer and the self-adhesive layer is adopted, the impact resistance is also greatly improved; the manufacturing process of the self-adhesive EVA protective film is low in cost and is simple.

A paste resin for producing PVC gloves and its production are disclosed. The process is carried out by making chlorethylene monomer under emulsifier system-surface activator protection, dispersing materials into water to become 1-2mum fine grain by disperser, polymerization reacting at 40-60degree under action of composite initiating agent to generate polymer latex with average grain diameter 1-2mum, and spray drying by latex to obtain the final product. It is stable, has no fluid, and has proper yield value and better tensile strength.

To provide a prepreg and a carbon fiber reinforced composite material that are excellent in adhesion between a matrix resin and carbon fibers and long-term storage stability and also excellent in microcrack resistance due to the increased toughness. The present invention provides a prepreg that includes; agent-coated carbon fibers coated with a sizing agent; and a thermosetting resin composition impregnated into the sizing agent-coated carbon fibers. The sizing agent includes an aliphatic epoxy compound (A) and an aromatic epoxy compound (B1). The sizing agent-coated carbon fibers are in a shape of woven fabric or braid. The thermosetting resin composition includes a thermosetting resin (D), a thermoplastic resin (F), and a latent hardener (G). The sizing agent-coated carbon fibers have an (a) / (b) ratio in a certain range where (a) is the height of a component at a binding energy assigned to CHx, C-C, and C=C and (b) is the height of a component at a binding energy assigned to C-O in a C 1s core spectrum of the surfaces of the sizing agent-coated carbon fibers analyzed by X-ray photoelectron spectroscopy.

Provided are a dielectric porcelain composition, a laminated ceramic capacitor and the manafacturing method thereof. The dielectric porcelain composition comprises barium titanate as the principal component, a first subcomponent (at least one member of the oxides of Mg, Ca, Ba, and Sr), a second subcomponent (an oxide containing 1 mol of Si atoms in 1 mol), a third subcomponent (at least one member of the oxides of V, Mo, and W), a fourth subcomponent containing at least one kind of R1oxide (wherein R1is at least one member selected from among Sc, Er, Tm, Yb, and Lu), a fifth subcomponent containing at least one kind of R2oxide (wherein R2is at least one member selected from among Y, Dy, Ho, Tb, Gd, and Eu), a sixth subcomponent (at least one member selected from the oxides of Mn and Cr), and a seventh subcomponent (at least one member selected from calcium zirconate and a mixture of a Ca oxide and a Zr oxide). The ratio of the number of moles A of the second subcomponent of the composition 1, and the total number of moles B of the fourth subcomponent and the fifth subcomponent is no less than 0.7; the ratio of the number of moles C of the Si atoms in the second subcomponent of the composition 2, and the total number of moles D of the atoms except Si and oxygen in all the subcomponents.

Disclosed are: a positive electrode material that can constitute a composition containing a positive electrode mixture having minimal deterioration over time and which can be produced with excellent productivity; a method for production therefor; a nonaqueous rechargeable battery with excellent storage properties and which is resistant to swelling when stored under high temperatures; and an electrode that can be used to constitute said battery. The positive electrode material is provided by forming a coating layer made from an organic silane compound on the surface of a positive electrode active substance made from a lithium nickel compound oxide represented by the general composition formula Li1 + xMO2 [where -0.5 <= x <= 0.5, and M represents a group of at least two elements containing Ni and at least one element selected from Mn and Co, and with the percentages (mol%) of Ni, Mn and Co, which constitute M, set to a, b and c respectively, being 20 <= a <(100, 50 <= a + b + c <= 100], wherein the titer when titering the supernatant liquor obtained by mixing and stirring 20 g of said oxide with 100 ml of distilled water in a nitrogen atmosphere for 1 hour, with 0.2 mol / L of hydrochloric acid, is 0.5 to 150 ml.

To improve the resistance to an organic solvent and the deterioration with age of a motor device. A motor device, wherein an exiting magnet is formed with an anisotropic bonded magnet (13) in a hollow and cyrindrical form, and the bonded magnet (13) is forced into and held in a housing (12), wherein the bonded magnet (13) comprises an anisotropic bonded magnet in a hollow and cyrindrical form being prepared by kneading an anisotropic rare earth magnetic powder with a phenol-novolac type epoxy resin, followed by forming, and wherein the anisotropic bonded magnet (13) is forced into the housing (12) along the internal circumference thereof, and the exposed surface layer of the anisotropic rare earth bonded magnet having been forced into the housing is subjected to a penetration treatment (defined in the specification) with a polyamideimide based resin and is covered by a coating layer.

The technique subject of the invention is to provide a kind of voltage-controlled oscillator, which has very large variable frequency range, high frequency-stability, low phase noise, very little change after a long period, ultra-small type, and the capability of simultaneously performing oscillation operations of plural frequencies. The film bulk acoustic resonator uses the single crystal ferroelectric, which has the same pole direction as the film thickness direction and a thickness smaller than 10 mum, as the piezoelectric body. By changing the voltage added to the electrode, a voltage-controlled oscillator having a large oscillation frequency variation rate larger than 0.01% / V and very small phase noise is provided.

Disclosed is a resin composition for forming an adhesive for temporary surface protection which has adequate release strength and releasability which does not change over time, while leaving no contamination on the object from which it is separated. This resin composition has a reduced curing time. Also disclosed is an adhesive for temporary surface protection which uses such a resin composition. Specifically disclosed is a resin composition for forming an adhesive for temporary surface protection through irradiation of an active energy ray, which contains a resin component and a photopolymerization initiator without containing a polymerizable monomer or a polymerizable oligomer. In this resin composition, the resin component is composed substantially only of an acrylic resin (A) containing no ethylenically unsaturated group. Also specifically disclosed is an adhesive for temporary surface protection which substantially contains only an acrylic resin (A) containing no ethylenically unsaturated group and is obtained by being irradiated with an active energy ray. Further specifically disclosed is an adhesive for temporary surface protection which is obtained by irradiating an acrylic resin composition [I] mainly containing an acrylic resin (A), which contains no ethylenically unsaturated group, with an active energy ray.

An asymmetrical porous polytetrafluoroethylene (PTFE) membrane for filter is composed of high-compactness surface layer and continuous air bubble type porous layer. Its advantages are small ageing change, low water permeability, good sealing and electric characteristics, improved gas permeability and collecting efficiency, and less pressure loss.

The invention provides a closed type battery having no electrolyte leakage, etc. and improved airtightness, which comprises a battery header in which an electrode-drawing sheet of polarity opposite to that of a battery can is fixed by caulking to an insulating member fitted into a through-hole in a metal sheet while an electrode-leading pin remains inserted into the through-hole. An internal insulating sheet mounted on the surface of the metal sheet of the battery header located inside the battery can comes into contact at two or more surfaces with an external insulating sheet mounted on a surface of the metal sheet of the battery header located outside the battery can.

Provided is a linear heating wire device, which is a single-line linear heating wire, and a temperature detection core wire and a short circuit detection core wire interactively winding around the outer circumference of a polymer layer at certain intervals spirally, so that a temperature control circuit and an interline short circuit protection circuit are separated, and a high-precision and stable temperature control function and a interline short circuit protection function with little fluctuation and high security are obtained in an economical way. A heating core wire (2) is spirally wounded around a roll core (1); a polymer layer (3) is formed around the roll core (1); a temperature detection core wire (4) and a short circuit detection core wire (6) are interactively kept from each at a certain distance on the outer circumference of the roll core (1), and are spirally wounded in a manner of biting into the polymer layer; and an insulation covering layer (5) is further formed on the roll core (1). Since the temperature detection core wire and the short circuit detection core wire are separated in space, the temperature control of the temperature detection core wire and the interline short circuit protection of the short circuit detection core wire can be performed independently, highly precisely with no fluctuation.

To provide an adhesive agent composition that is used in the adhesion of an optical film, exhibits superior durability even in high-temperature high-humidity environments, and has an excellent ability to suppress white spots from arising. [Solution] The adhesive agent composition contains: a (meth)acrylic copolymer (A) containing a carboxyl group; a (meth)acrylic copolymer (B) containing a carboxyl group and a hydroxyl group; 5-20 parts by weight of a tolylene diisocyanate compound (C) for every total of 100 parts by weight of the (meth)acrylic copolymers (A and B); and an epoxy-group-containing silane coupling agent (D).

The invention provides an additive capable of improving the water-retention rate and the operation time of a wet-mixed masonry mortar, a plastering mortar or a floor mortar in the building field. The additive comprises a component A and a component B, wherein the component A is prepared from the following components in percentage by weight: 1 to 1.5 percent of water-retaining agent, 0.1 to 0.5 percent of air entraining agent, 2 to 5 percent of water reducing agent, 2 to 4 percent of early strength agent, 1 to 5 percent of coagulant, and the balance of water through mixing and stirring; the component B is prepared from the following components in percentage by weight: 5 to 20 percent of sodium gluconate, 2 to 10 percent of saccharose, 1 to 6 percent of borax,and the balance of water through mixing and stirring; the water-retaining agent is methyl hydroxyethyl cellulose ether with the viscosity being 10000 to 20000mpas; the air entraining agent is one or two of sodium alpha-olefin sulfonate or fatty alcohol-polyoxyethylene ether sodium sulfate. The additive provided by the invention is reasonable in formula and convenient to use, can enable the wet-mixed mortar to have a better water-retaining property at high temperature when being added into the wet-mixed mortar, and has better storage stability. The invention also provides a preparation method of the additive.

The invention provides new biomolecule immobilized substrate and biochip which use hydrophilic monomolecular film and lipid bilayer to immobilize biomolecule on a chip substrate. On the transparent chip substrate 21, metal layer 22 consisting of Au particulate is formed. Further on it, monomolecular film 23 consisting of X-(CH2)n-OH (X:thiol group) is formed utilizing self assembly. On the monomolecular film 23, lipid bilayer 24 consisting of phospholipid is formed utilizing self assembly. Both the monomolecular film 23 and the lipid bilayer 24 are rather flexibly combined by hydrogen bond. On this lipid bilayer 24, receptor 28 is immobilized through biosensing molecule 27.

The invention relates to a medium-viscosity protective film emulsion and a preparation method thereof. The emulsion comprises the following components: acrylate monomers, functional monomers, an emulsifier, an initiator, a neutralizer and deionized water, preferably, methyl methacrylate is used as a hard monomer; butyl acrylate and 2-ethylhexyl acrylate are used as soft monomers, although the dosage of the functional monomers is small, by addition of the functional monomers for polymerization with the soft and hard monomers, the prepared acrylate emulsion polymer contains certain functional groups with high polarity, so that cohesion and bonding performance of the adhesive can be obviously improved. A pre-emulsification seed polymerization process is adopted, so that the water resistance is excellent, the fitness is excellent, and the time-dependent change of the flitch is small. The stripping force of the protective film prepared by the product is increased by not more than 10% afterhalf a year, and the protective film is easy to strip off when being removed without polluting the surface of the base material.

The invention relates to an avalanche photodiode and a method for manufacturing the same. The avalanche photodiode can improve high-speed response and reduce the features changing along time. The avalanche photodiode includes a N-type Inp substrate; an allnAs avalanche multiplying layer (3), a p-type electric field controlling layer (4), a non-doping light-absorbing layer (5), and a window layer (6) sequentially laminated on the substrate. A p-type region is present in parts of the window layer (6) and the non-doping light-absorbing layer (5). Carbon is the dopant of the electric field controlling layer (4). Zn is the dopant of the p-type region. A bottom face of the p-type region is closer to the substrate than is an interface between the non-doping light-absorbing layer (5) and the window layer (6).

An asymmetrical porous polytetrafluoroethylene (PTFE) membrane for fabric is composed of high-compactness surface layer and continuous air bubble type porous layer. Its advantages are small ageing change, low water permeability, good sealing and electric chcaracteristics, and improved water vapor permeability and adhesion to fabric.

The invention relates to a slurry-rich concrete additive and a preparation method thereof. The slurry-rich concrete additive is prepared by compounding the following components in percentage by mass: (60-100) per thousand of quick adsorption and dispersion water reducing agent, (150-250) per thousand of air entraining water reducing agent, (5-30) per thousand of water retaining agent, (0.5-2) per thousand of air entraining agent, and the balance of deionized water . The quick adsorption and dispersion water reducing agent is synthesized by copolymerizing allyl polyethylene glycol monomethyl ether, acrylic acid and sodium p-styrenesulfonate serving as raw materials. The air entraining water reducing agent is synthesized by taking a polyether macromonomer, acrylic acid, methacrylic acid, methyl acrylate and 2-acrylamide-2-methylpropanesulfonic acid as raw materials and adding an initiator and a chain transfer agent for copolymerization. The invention also provides a preparation method of the slurry-rich concrete additive. The volume of concrete slurry is increased, and the mortar can be applied to concrete which seriously affects construction due to the fact that the content of powder in sand is seriously insufficient.

The invention provides a wire type heating wire device, which is a single-line wire type heating wire. Insulating wires, temperature detecting wires and short circuit detecting wires are alternately arranged on the periphery of a high polymer layer. The wires are co-stranded and spirally wound so as to make a temperature control circuit and an inter-wire short circuit protecting circuit separated. In this way, inter-wire short circuit protection functions characterized by high precision, stable temperature control function, alleviated fluctuation and high safety are acquired. The economical effects are also great. Heating wires are wound on a roll core in a spiral way. The high polymer layer is formed on the periphery of the heating wires. At least one insulating wire serves as the temperature detecting wire and the short circuit detecting wire of a conductor and is alternately arranged on the periphery of the conductor. The wires are spirally wound in a co-strand way. Furthermore, an insulating coating layer is formed thereon. The temperature detecting wire and the short circuit detecting wire are separated spatially. Therefore, the temperature control by the temperature detecting wires and the inter-wire short circuit protection by the short circuit detecting wires are respectively independent and performed in a high-precision and non-fluctuation way.

An adhesive sheet comprising a substrate and an adhesive layer formed on at least one side of the substrate, characterized in that an adhesive agent contained in the adhesive layer comprises an acrylic ester copolymer and a citrate plasticizer; the acrylic ester copolymer has a glass transition temperature of -45 DEG C or less; the citrate plasticizer is contained in an amount of 1.0 to 50.0 parts by mass (solid content), with respect to 100 parts by mass (solid content) of the acrylic ester copolymer; and a rate of a gel content in the adhesive agent in the adhesive layer is 70% or more, is disclosed. The adhesive sheet according to the present invention has a slightly-adhesive property and a removable property, and can be suitably used, for example, as a carrier sheet.

The invention provides a transparent mortar mixture simulating a rheological property of cement mortar and a preparation method of the transparent mortar mixture. The mixture comprises the following components by weight percentage: 92.41-94.50% of deionized water, 0.30-0.35% of carbomer 940 powder, 0.20-0.24% of neutral regulator triethanolamine and 5-7% of transparent glass bead. The transparent mortar mixture simulates the rheological property of the cement mortar at a water cement ratio of 0.45-0.5 and a sand cement ratio of 1:1. The preparation method of the mixture comprises the steps of adding the carbomer powder into the deionized water, after complete dissolution, dropwise adding triethanolamine, after uniformly stirring, standing for 5-10min, obtaining transparent carbomer gel, and then uniformly stirring after adding the transparent glass bead. The transparent mortar mixture serves as a simulating medium of the cement mortar, is low in cost, simple to prepare, good in transparency, small in thixotropy and small in rheological parameter ongoing change, and has an obvious pseudoplastic characteristic.

The invention relates to an electron-emitting device and an electron source, an electron beam apparatus as well as an image display apparatus using the same. The electron beam apparatus includes: an insulating member having a recess on its surface; a cathode having a protruding portion extending over the outer surface of the insulating member and the inner surface of the recess; a gate positioned at the outer surface of the insulating member in opposition to the protruding portion; and an anode positioned in opposition to the protruding portion through the gate.

A carbon layer is formed on a solid electrolyte layer of the solid electrolytic capacitor, and a conductor layer connected to a cathode terminal is further disposed thereon. The carbon layer contains carbon particles, and a first additive or a second additive. The first additive is formed from at least one of those selected from the group consisting of hydrated silica and silicate. The second additive is formed from at least one of those selected from the group consisting of a condensation product of an aromatic sulfonic acid with formaldehyde, a condensation product of an aromatic sulfonate with formaldehyde, polystyrene sulfonic acid, and polystyrene sulfonate.

The invention discloses a dispersion stabilizer. The dispersion stabilizer comprises compound, and the compound is prepared by an acid-base neutralization reaction of a neutralizer and a block copolymer formed by linking an unsaturated carboxylic acid, an unsaturated sulfonic acid and an unsaturated phosphate end to end. The molecular chain of the compound contains a carboxyl group, a sulfonic group and a phosphate group, the compound is a copolymerized polymer electrolyte, and the molecular weight distribution of the compound belongs to a bimodal structure, so the dispersant is multifunctional, that is the mechanical stability of the dispersant is improved, the grinding efficiency is increased, and the viscosity stability of a ground slurry is improved; and the acid-base neutralization reaction makes the compound have a plurality of valence ions, such as a plurality of valence metal cations, and the plurality of valence compounds are combined to form the polymer electrolyte with further optimized properties, such as mechanical stability and viscosity stability of the slurry.