193results about How to "Won't melt" patented technology

The invention discloses a backlight module and a display device. The backlight module comprises a light source module, a framework, a fixing part and an elastic element. The light source module comprises a circuit board provided with a first fixing hole and an LED; the side wall of the framework is provided with a second fixing hole; the fixing part comprises a first part, a second part and a third part, and the first part is in a thread structure; and the elastic element is arranged between the side wall and the circuit board. The first part penetrates through the second fixing hole to be locked and fixed with the first fixing hole, and the second part is movably positioned in the second fixing hole. When light source module is pressed to compress the elastic element, the light source module moves towards a first direction facing the side wall, and the second part moves towards the first direction along the second fixing hole; and when the elastic element recovers, the light source module moves towards a second direction far away from the side wall, and the second part moves towards the second direction along the second fixing hole. The elastic element of the light source module ensures that the light source module can move relative to the framework and can prevent the LED from being damaged by pressing.

The invention provides a transparent halogen-free fire-retardant paint composition, which consists of 100phr (Parts per Hundred of Resin) of adhesive, 50-400phr of solvent, 50-300phr of foaming agent, 10-200phr of carburetant, 1-100phr of carbonizing promoter and 0-100phr of auxiliary additive; wherein, the carbonizing promoter is a phosphorus-containing compound with reaction functional groups. A coat formed by the transparent halogen-free fire-retardant paint composition nearly generates no smoke when being heated but instantly generates an expanding layer of high toughness. The expanding layer is not likely to crack, does not melt, drop and droop and moreover, is capable of effectively obstructing oxygen and heat to fulfill fire-retardant effect. The paint composition has excellent compatibility and dispersibility among the ingredients, therefore has eminent transparency and can be used for the fire prevention of various buildings, furniture or in decoration without damaging the original appearance view thereof.

The invention relates to a shelling method for fresh corn kernels and a quickly frozen fresh corn kernel sheller. The invention relates to the shelling method and the sheller. The invention solves the problem that the prior common grain sheller can not shell the fresh corn kernels. The shelling method comprises the following main steps: the fresh corn kernels are selected, stored and shelled in an environment of -40 to -30 DEG C and shelled after enzyme deactivation treatment and threshing; and the temperature in a grind cavity of the quickly frozen fresh corn kernel sheller is kept below -5 DEG C and chaff is removed. A grinding wheel (5) is arranged inside a grinding vessel (6); and at least one cooling air inlet (4) is arranged on a sealing cover (3). The fresh corn shelled through the method has good shelling effects and does not lose the nutrition of the fresh corn; the quickly frozen fresh corn kernel sheller is provided with the cooling air inlet, thereby having good heat dissipation effect, ensuring that the quickly frozen fresh corn kernels are not unfrozen by frictional heat during the process of shelling through mechanical friction, and consequently ensuring the hardness of the quickly frozen fresh corn kernels.

The invention discloses an electric deicing pickaxe and a deicing method. The electric deicing pickaxe comprises an insulating rod and a shell, wherein the shell is arranged on the insulating rod; a coil is arranged in the shell; an iron core is arranged in the coil; a sliding armature is arranged in the iron core; a return spring sleeves the sliding armature; a deicing shovel which extends out of the shell is arranged at the upper end of the sliding armature; and a deicing guide line protection mechanism is arranged on the shell. By the electric deicing pickaxe, a power failure is not needed in the deicing process; and a high voltage does not harm an operator.

The invention relates to an insulator for bare-packing and sintering ceramics to be stacked in a multi-layered manner and an application method thereof. The insulator comprises the following raw materials in parts by weight: 35-60 parts of quartz particles with 32-100 meshes, 40-65 parts of calcined Al2O3 or quartz particles with 100-140 meshes and 0.5-2 parts of peach gum or carboxyl methyl cellulose (CMC). The application method comprises the following steps during the preparation: firstly, dissolving the peach gum or the carboxyl methyl cellulose by using water with a weight ratio of 6-20 times, then adding the proportioned other raw materials, and finally, adding an appropriate amount of water to mix into thin paste. When in use, the insulator is sprayed, coated or brushed on the surfaces of stacked parts of ceramic tire products; and after the insulator is naturally aired, the same shape or different shapes of a plurality of layers of or a plurality of ceramic tire products are vertically stacked on sintered kiln furniture on a same plane to be sintered, and the sintering temperature is 1200-1280 DEG C. After the ceramics are sintered, viscose compositions in the ceramics aredecomposed and evaporated, and the quartz particles and the calcined Al2O3 particles are only remained among the ceramic tire products and can not be melted or bonded with ceramic tires, so that the purpose of dividing and separating the vertically-stacked and sintered ceramic tire products is achieved.

In order to solve the problems that soldering paste which is environmentally friendly, low in cost and reliable in welding joint under a high-temperature working environment does not exist at present, the invention provides a Sn-Cu lead-free soldering paste, a preparation method of the soldering paste and an application method of the soldering paste and belongs to the field of electronic packaging materials. The soldering paste is composed of tin powder, copper powder and rosin flux. The preparation method includes the steps that the rosin flux is added into the tin powder and the copper powder; next, the tin powder and the copper powder are mechanically mixed through a blender mixer for 10-15 min at the speed of 1,000-1,800 turns/min, and then the soldering paste is obtained. When the working temperature in the air is lower than 350 DEG C, the welding seam shear strength of the high-temperature lead-free soldering paste is greater than or equal to 10 MPa. If pressure of 5-10 MPa is exerted from the outside in the heat treatment process of a welding piece, the welding seam shear strength of the high-temperature lead-free soldering paste is greater than or equal to 20 MPa. The use temperature of samples welded through the soldering paste can reach as high as 400 DEG C, and the soldering paste is high in welding seam shear strength, simple in welding process, stable in performance and low in cost.

A polylactic acid film or sheet is a resin film or a sheet containing polylactic acid (A), wherein the melting endothermic value (delta HC') in a crystallization section at the time of film-forming, which is called for by formula (1) delta HC'= delta Hm- delta Hc (1) (In the formula, delta HC is the exothermic value (J/g) accompanied with crystallization in the heating process of the film or sheet after film-forming, and is measured using a DSC; delta Hm is the endothermic value (J/g) accompanied with the melting thereafter.), is 10J/g or more, and a tearing strength in a flow direction (MD direction) and a width direction (TD direction) both are 2.5N/mm or more. This polylactic acid film or sheet does not melt or deform even at temperatures exceeding 100 DEG C, and furthermore, during production and machining of the film or sheet, no breakage or tearing, when the film or the sheet is rolled into a roll or the like, happans.

The invention discloses a copper catalyst. The copper catalyst is characterized by containing 20-95wt% of copper and 0.5-70wt% of silicon. The catalyst is obtained by heating copper, silicon and/or transition metals until the components are molten, cooling and curing the melt and carrying out extraction treatment on the alloy obtained after curing with an alkali-acid solution to extract part of silicon. The catalyst has higher activity and selectivity than conventional copper catalysts and has good stability when used in the silicon tetrachloride hydrogenation reaction.

The invention discloses a high-temperature-resistant hot melting type colorful pavement crack encapsulating material and a preparation process thereof. The encapsulating material is obtained by mixing, stirring and shearing the following raw materials in parts by weight: 35-40 parts of furfural extract oil, 3-4 parts of styrene-butadiene-styrene block copolymer, 4-5 parts of ethylene-vinylacetatecopolymer, 23-25 parts of petroleum resin, 3 parts of dioctyl phthalate, 17-21 parts of calcium carbonate, 0.5-1 part of methyl silicone oil and 0.2-0.4 of pigment. Compared with the prior art, the encapsulating material prepared by the process in the invention has the advantages that cost is low, the service life is long, high temperature can be resisted and simultaneously the color and adheringproperty of the encapsulating material are maintained to be the same as those of colorful pavement, and the technical index of the encapsulating material reaches the requirement of highway bituminouspavement regeneration technical regulation (JTGF41-2008).

The invention discloses a low-melting-point compound suspending agent and a preparation method thereof. The low-melting-point compound suspending agent is composed of the following substances by mass: 1%-50% of low-melting-point compound, 1%-10% of dispersing agent, 1%-6% of wetting agent, 5 %-30% of porous carrier, 1%-3% of polyvinylpyrrolidone, 0.1%-0.5% of thickener, 3%-5% of anti-freezing agent, 0.1%-0.5% of preservative and deionized water as the balance. The low-melting-point compound refers to the compound with the melting point as 50 DEG C- 70 DEG C. The suspending agent adopts a porous carrier to adsorb the low-melting-point compound, utilizes polyvinylpyrrolidone for wrapping, utilizes the proper dispersing agent and the proper wetting agent for assistance and improves physical stability. The agent is good in physical stability if stored under common condition and is still qualified, is not agglomerated and is good in mobility if stored under high temperature like 54 DEG C.

The present invention provides a laser beam processing machine comprising a chuck table for holding a workpiece, a laser beam application means for applying a laser beam to the workpiece held on the chuck table, and a processing-feed means for moving the chuck table and the laser beam application means relative to each other, wherein the chuck table comprises a body and a workpiece holding member disposed on the top surface of the body, and the workpiece holding member is made of a material which transmits a laser beam having a predetermined wavelength.

The invention discloses a power cabinet with waterproof function, which comprises a cabinet body, a humidity tester is fixedly connected to one side of the outer wall of the cabinet body, and a fixing rod is fixedly connected to the inside of the cabinet body, and the tops of the fixing rods are respectively fixed from left to right The controller and the motor are connected, and the inner cavity on the top of the cabinet is fixedly connected with a bearing. The inner part of the bearing is fixedly sleeved with a nut, and the outer part of the bottom of the nut is fixedly sleeved with a wheel. The outer wall of the wheel is connected to the output shaft of the motor through a belt drive. The outer wall of the nut, the inner thread of the nut is sleeved with a threaded rod. The power cabinet with waterproof function, through the cooperation between the humidity tester, controller, motor, bearings, nuts, belts and threaded rods, can ensure that no matter how heavy the rainwater is, it will not float into the power cabinet and keep the inside of the cabinet. Dry to ensure that the circuit inside the cabinet will not be short-circuited by rain, thereby reducing the loss of the circuit inside the cabinet and improving the service life of the power cabinet.

The invention relates to a polyacrylonitrile fiber, and concretely relates to a high temperature-resistant flame retardation polyacrylonitrile fiber and a production method thereof. The method concretely comprises the following steps: processing a polyacrylonitrile fiber in a hydrazine solution with the concentration of 7-20wt%, processing the hydrazine processed fiber in an alkaline solution with the concentration of 3-10wt%, washing the alkali processed fiber with water until the fiber is neutral, processing the neutral fiber in an aqueous metal ion salt solution with the concentration of 3-10wt%, oiling the metal salt processed fiber, dehydrating the oiled fiber, and drying the dehydrated fiber to obtain the high temperature-resistant flame retardation polyacrylonitrile fiber. The flame retardation performance LOI of the flame retardation fiber obtained in the invention can reach 40-45, the flame retardation grade is M1, and the amount of smoke generated in the combustion process is very small, the grade of toxic gases is FO, and the smoke amount of the flame retardation fiber in the invention is lower than that of other flame retardation fibers. The flame retardation fiber in the invention has the advantages of high moisture regain rate, high water absorption rate, good dyeability and low shrinkage in boiling water.

The invention discloses a polymer battery lug and a surface processing method thereof, which comprises Ni, Al and insulating tape; the invention is characterized in that: the surface of the lug is coated with ammonium bifluoride, chromic oxide, sodium phosphate and boric acid; and the weight thereof are as follows respectively: 3 to 3.5g of ammonium bifluoride, 20 to 26g of chromic oxide, 2 to 2.5g of sodium phosphate and 0.4 to 0.6g of boric acid. The invention fundamentally solves the weakest link of electrolyte non-resistance of a normal lug, thus guaranteeing the long-term tightness of encapsulated cell in subsequent storage and use processes. The invention improves the safety of the battery and electric equipment.

The invention discloses a preparation method of a high-temperature-resistant grid acrylic pressure-sensitive adhesive tape, which is characterized in that: 20-90 parts by mass of silicone rubber, 10-80 parts by mass of silicone resin, 1-3 parts by mass of catalyst and 100-500 parts by mass of solvent are uniformly mixed to prepare an organic silicone resin coating material; a PET precoating film silicone coated with a thin film surface treatment agent is coated by the organic silicon resin coating material, after pre-drying, a high-temperature-resistant grid PET release film is prepared, and then the high-temperature-resistant grid PET release film is coated with acrylic pressure sensitive adhesive, after pre-drying, the high-temperature-resistant grid PET release film is bonded with cloth-based materials such as thin films such as polyester, polypropylene, polycarbonate, polyimide thin film or cotton cloth, non-woven cloth, glass cloth and the like, and then rolled up to prepare the high-temperature-resistant grid acrylic pressure sensitive adhesive tape. The high-temperature-resistant grid acrylic pressure-sensitive adhesive tape prepared by the invention greatly improves the temperature resistance, does not melt when the use temperature reaches 200 DEG C, keeps the grid structure undeformed, and ensures the surface exhaust performance of the pressure-sensitive adhesive tape.

The invention discloses a wear-resistant frit, a preparation method of the frit and a glaze using the frit, and the wear-resistant frit is prepared from the following raw materials in percentage by mass: 20-36% of prefabricated frit, 20-38% of talc, 2-5% of zinc oxide, 8-12% of calcined aluminum oxide, 20-24% of kaolin and 7-9% of fluorite. The prefabricated frit is prepared from the following rawmaterials in percentage by mass: 15 to 20 percent of potassium feldspar, 5 to 10 percent of dolomite, 45 to 55 percent of talc, 2 to 5 percent of zinc oxide and 20 to 25 percent of aluminum oxide. The wear-resistant frit is good in transparency and good in wear resistance, the preparation method of the wear-resistant frit is simple, all the raw material components are fully fused in the high-temperature firing process, and the prepared wear-resistant frit is high in transparency and good in wear resistance. The glaze using the wear-resistant frit has the advantages of favorable wear resistance of the glaze layer, favorable surface gloss of the glaze surface and favorable light transmission property.