35results about How to "High temperature and high humidity resistance" patented technology

The invention relates to conductive silver paste for a ceramic filter and a preparation method of the conductive silver paste. The conductive silver paste comprises the following components in parts by weight: 50-80 parts of metal silver powder, 2-5 parts of glass powder, 10-30 parts of an organic carrier, 1-3 parts of an organic additive and 1-10 parts of an organic solvent, wherein the glass powder is lead-free glass powder, the coefficient of thermal expansion is 110-120*10<-7>/DEG C, and the sintering temperature is 550-750 DEG C. The preparation method comprises the following steps: adding the organic carrier and the organic solvent into a mixer, adding the metal silver powder, the glass powder and the organic additive, fully mixing, transferring a mixture into a high-speed dispersionmachine, and uniformly dispersing at a high speed to obtain a conductive silver paste; and grinding the prepared conductive silver paste in a three-roller mill, and finely adjusting a roller to enable the fineness of the conductive silver paste to be less than 10mu m and the viscosity to be 30-50Pa.S, thereby obtaining the conductive silver paste for the ceramic filter. The conductive silver paste for the filter can form a conductive silver layer which is high in compactness, high in adhesive force, high in conductivity, good in weldability and stable in performance.

The invention discloses an epoxy resin encapsulating material as well as a preparation method and application thereof, and belongs to the technical field of electronic materials. The epoxy resin encapsulating material is prepared from the following raw materials: a resin part, namely a bisphenol A epoxy resin, a dicyclopentadiene phenol-type epoxy resin, a multifunctional diluent, a filler, a silane coupling agent and auxiliaries, and a curing agent part, namely methyl nadic anhydride and/or methyl tetrahydrophthalic anhydride, a cycloaliphatic epoxy resin and an accelerant; the resin part is mixed with the curing part to obtain the epoxy resin encapsulating material. According to the encapsulating material, the dicyclopentadiene phenol-type epoxy resin is added to the resin part, the silane coupling agent is applied to activating the filler in combination with the multifunctional diluent, and the cycloaliphatic epoxy resin is added to the curing part, and therefore, the finally obtained encapsulating material has the characteristics of high temperature resistance and high humidity resistance. The encapsulating material is used for preparing a capacitor, and consequently, the capacitor is enabled to be stable in capacity, small in change tolerance and longer in service life under the conditions of a high temperature, high humidity, and running with load after being powered on.

The invention belongs to the technical field of transferring machines and discloses a rising and falling horizontal transferring machine which comprises a transferring machine support, a rising and falling moving assembly and a horizontal moving and plate conveying assembly. A layer limit switch is arranged on the transferring machine support. The rising and falling moving assembly drives a risingand falling moving framework through a three-phase asynchronous band-type brake motor. The rising and falling moving framework is dragged through a chain. The horizontal moving and plate conveying assembly comprises a horizontal moving device and a plate conveying device. The horizontal moving device is provided with a horizontal limit switch, and a horizontal moving direct-current speed reducingmotor drives a horizontal moving bottom plate. The plate conveying device is provided with a plate in-place switch, and a plate conveying direct-current speed reducing motor drives a pattern conveying belt to drive a tool plate. The rising and falling horizontal transferring machine is simple in structure and reliable in performance, and the problem of connection between single triple speed chains of an inlet and an outlet of an aging house and multi-layer triple speed chain in the aging house can be solved.

The invention provides a chip resistor. The chip resistor comprises a resistor sheet, an inner shell which wraps the surface of the resistor sheet, a heat sink bonded to the surface of the resistor sheet through an insulating thermal conductive adhesive, an outer shell at the outermost layer and electrode pins connected with the two ends of the resistor sheet and located outside the outer shell, and the inner shell is provided with a hollowed-out part for coating the insulating thermal conductive adhesive. A manufacturing method of the chip resistor includes the steps of blanking the resistorsheet and the electrode pins, then processing and connecting the resistor sheet and the electrode pins to form a resistor body, conducting rough adjustment and fine adjustment on a resistance value ofthe resistor body, packaging for the first time to form the inner shell, blanking the heat sink, bonding the heat sink to the resistor sheet through the insulating thermal conductive adhesive, packaging for the second time, cutting and bending the electrode pins to form a side U shape, and finally conducting post-processing to obtain the chip resistor. According to the chip resistor, after roughadjustment and fine adjustment are conducted on the resistance value of the resistor body, packaging is conducted for the first time, a layer of inner shell wraps the resistor body to ensure that theheat sink is not contact with the resistor sheet, and the obtained chip resistor has high precision, fast heat dissipation, long service life, safety and reliability, and high product yield.

The invention discloses a display panel, a manufacturing method thereof and a display device. The display panel comprises a first substrate, a second substrate opposite to the first substrate, a first organic film layer arranged on the first substrate and/ or a second organic film layer arranged on the second substrate, wherein the first organic film layer and/or the second organic film layer are the organic film layers doped with dichroism organic dyestuff polyimide. Alignment can be achieved conveniently without stretching, so that no protective film or an adhesive layer is needed, the thickness of a polarizing film can be decreased, the reliability of the polarizing film is improved, and the warping phenomenon of the polarizing film can be improved, and the durability is good.

The invention discloses a polycarbonate composition. The polycarbonate composition comprises, by weight, 86-99.5 parts of polycarbonate, 0.2-0.7 part of total-fluorine substituted polyolefin and 0.3-13.8 parts of flame retardant. The sum of the weights of the polycarbonate, the total-fluorine substituted polyolefin and the flame retardants is 100 parts. The polycarbonate composition has the advantages that specific quantities of the total-fluorine substituted polyolefin, total-fluorine substituted alkyl acid and derivatives of the total-fluorine substituted alkyl acid are selectively added into the polycarbonate composition in a formula, the total-fluorine substituted alkyl acid and the derivatives are based on the polycarbonate composition, the total weight of the total-fluorine substituted alkyl acid and the derivatives is 5ppm-100ppm, and accordingly, the hydrolysis stability, the abrasion resistance and the flame retardancy of the polycarbonate composition can be obviously improved; the polycarbonate composition is particularly applicable to the field of electronic and electrical appliances.

The invention relates to the technical field of flexible circuit board protection, and particularly relates to high-efficiency environment-friendly ultraviolet (UV)-moisture double-cured three-proofing paint for a flexible circuit board. The three-proofing paint is prepared from the following raw materials in parts by weight: 30-70 parts of modified acrylic resin, 30-70 parts of a reactive diluents, 1-10 parts of an initiator, 0.1-8 parts of a leveling aid, 0.1-5 parts of a defoaming agent, 0.1-5 parts of a wetting agent and 0.1-6 parts of a flame retardant.

The invention discloses an environment-friendly, high-viscosity and weather-resistant modified starch adhesive and a preparation method thereof.The environmentally friendly, high-viscosity and weather-resistant modified starch adhesive is prepared from the following components in parts by weight: 20 to 30 parts of soluble starch, 50 to 70 parts of tertiary water; 0.1 to 1 part of vinyl alcohol, 1to 10 parts of a PH regulator, 1 to 5 parts of a gelatinizer, 2 to 8 parts of hydrogen peroxide, 0.1 to 1 part of a carboxylic acid crosslinking agent, 0.5 to 2 parts of borax and 0.1 to 5 parts of anadditives. According to the environmentally friendly, high-viscosity and weather-resistant modified starch adhesive, the polyvinyl alcohol, the starch and the tertiary water are mixed, then the hydrogen peroxide is added in an alkaline environment for oxidization to destroy the hydrogen bond of the starch for modification, the carboxylic acid crosslinking agent is added to form a stable network structure,and then gelatinization, complexationand dispersion are conducted to prepare the environment-friendly and highly-viscosity modified starch adhesive with the abilities to withstand high temperature and high humidity, low temperature and high and low temperature cycling impact.

The invention discloses a photovoltaic module applied to desert areas and tropical areas. The photovoltaic module is formed by overlaying a piece of tempered glass, a first UV cut-off EVA layer, a battery piece, a second UV cut-off EVA layer, an aluminum backboard, a junction box and an aluminum frame in sequence. According to the photovoltaic module, the aluminum backboard is formed by sequentially compounding a first backboard film, a PET layer, an aluminum foil and a second backboard film. The photovoltaic module is reasonable in structure and can be used not only in the desert areas and the tropical areas but also in various areas with severe conditions, the high-performance EVA layers and the aluminum backboard of a novel structure are used, the performance of the photovoltaic module is improved, the power of the photovoltaic module is improved, and the service life of the photovoltaic module is prolonged.

The invention discloses a hot-pressed insulating film and a flexible flat cable comprising the same. The invention provides the hot-pressed insulating film. The hot-pressed insulating film comprises a base material layer and an adhesive layer formed on the surface of the base material layer, the adhesive layer comprises the following raw materials in percentage by mass: 30-50% of saturated polyester resin A, 5-20% of saturated polyester resin B, 25-45% of a flame retardant, 5-10% of a curing agent, 0.01-0.1% of a curing accelerator, 0.1-1% of a dispersing aid, and 0.1-1% of a hydrolysis-resistant auxiliary agent. The glass transition temperature Tg of the saturated polyester resin A is 0-30 DEG C, and the acid value of the resin A is less than 3 KOHmg/g; the glass transition temperature Tg of the saturated polyester resin B is 40-120 DEG C; and the number-average molecular weight Mn of the saturated polyester resin A and the saturated polyester resin B is 5000-40000. The hot-pressed insulating film provided by the invention can meet long-term outdoor use requirements.

The invention discloses a heat-insulating and flame-retardant hot-pressing adhesive tape in a blade battery and a preparation method thereof, and belongs to the technical field of adhesive tapes. The adhesive tape disclosed by the invention is prepared by mixing polyester, epoxy resin, acrylate copolymer resin, flame retardant, butanone and curing agent, coating, drying and curing, and the adhesive tape is convenient in production process and high in automatic production efficiency. The aerogel wrapped by the adhesive tape can be completely bonded within 8 seconds through hot pressing, the product performance requirement is met, when a combustion experiment is applied to the aerogel, the surface silicon dioxide coating can slowly form powder silicon attached to the surface of the aerogel, the powder silicon and the aerogel resist high temperature together without damaging the aerogel, and the heat insulation performance of the aerogel is improved by 20 degrees or above. The adhesive tape can be subjected to adhesive-to-adhesive hot pressing and opposite pasting after being heated, has super-strong adhesion with ceramics, rubber and silica gel, has excellent high-temperature and high-humidity resistance, high and low temperature impact resistance and electrochemical resistance, and is good in flame retardance, heat insulation and insulation performance and low in storage requirement.

The invention discloses a high-temperature-resistant anti-corrosion air inlet manifold sealing ring material. The material is prepared from the following raw materials: polyaryl ether nitrile, china stone powder, fluoroether rubber, a flame retardant, polyphosphazene, a surfactant, a plasticizer, a catalyst, a vulcanization accelerator, a vulcanizing agent, a stabilizer, xanthorrhoea australis gum, tung oil calcium rosinate, tremolite asbestos, barium sulfate, serpentine powder, nano zinc oxide, konjac glucomannan and phthalocyanine resin. The high-temperature-resistant anti-corrosion air inlet manifold sealing ring material is prepared by taking the polyaryl ether nitrile and a fluorine ether rubber matrix as main raw materials, rubber and plastic blending is adopted, and auxiliary raw materials such as the tremolite asbestos, the barium sulfate, the serpentine powder, a cross-linking agent, a coupling agent and the like are added, so that the prepared air inlet manifold sealing ringmaterial has composite functions such as flame retardancy, high-temperature resistance, corrosion resistance and the like, production cost is saved, and the material can be popularized and used in a large scale.

The present invention relates to the technical field of chemical industry, particularly to an acrylic resin mainly used for a container topcoat coating material, and a preparation process thereof. The acrylic resin comprises, by weight, 40-60 parts of an acrylic monomer, 5-15 parts of a functional acrylic monomer, 0.1-5 parts of an initiator, and 40-70 parts of a solvent, wherein the acrylic monomer is two or more than two selected from methyl acrylate, methyl methacrylate, n-butyl methacrylate, and n-butyl acrylate. According to the present invention, various physical requirements of the container topcoat are completely considered, and the appropriate acrylic monomer and the appropriate functional acrylic monomer are screened to perform the polymerization reaction of the acrylic resin, such that the acrylic resin with characteristics of corrosion resistance, wear resistance, impact resistance, high-temperature resistance, high-humidity resistance, low-temperature resistance, high salt erosion resistance, yellowing resistance and other physical properties, and with rapid drying, high fullness, thick coating, excellent color dispersion, easy repair and other coating construction characteristics is developed.