80results about How to "Guaranteed wettability" patented technology

The invention discloses a low-temperature conductive silver paste for an HIT solar cell and a preparation method thereof. The low-temperature conductive silver paste for the HIT solar cell is preparedby the following components including, by weight, 27 to 46 Parts of flake silver powder, 46 to 65 parts of spherical silver powder, 1.5 to 3.5 parts of thermosetting resin, 0.5 to 1.5 parts of reactive diluents, 2 to 4 parts of organic solvents, 0.65 to 0.75 part of curing agent, 0.05 to 0.15 part of imidazole curing accelerator, 0.35 to 0.45 part of dispersing agent, 0.01 to 0.6 parts of thixotropic agent, 0 to 2.4 parts of epoxy toughening agents and 0.5 to 1.5 parts of polymers, and the total composition is 100 parts. The low-temperature conductive silver paste prepared by using the formula of the invention can form a bond with a substrate and has good wettability to the substrate, therefore, the filling factor of the solar cell is improved, and the photoelectric conversion efficiencyof the solar cell is improved.

The invention discloses an environment-friendly type separate coal covering inhibitor, which comprises the following components in weight percentage: 0.05 to 2.00 percent of carboxymethyl cellulose, 0.50 to 2.50 percent of glycerin, and the balance being water. The invention also provides a method for preparing the environment-friendly type separate coal covering inhibitor. The preparation method comprises the followings steps: a reaction kettle is added with water accounting for 80 percent of total water quantity, added with the carboxymethyl cellulose, started to be stirred, added with the glycerin when the carboxymethyl cellulose is completely dissolved, evenly stirred, added with the remained water accounting for 20 percent of total water quantity, and evenly stirred so as to obtain the finished product. The inhibitor has reasonable formula and is easy to purchase; because the materials are organic matters, the inhibitor does not affect the fuel value of coal after spraying; moreover, the inhibitor also has the advantages of low cost, convenient use, obvious dustlaying and loss prevention effects, obvious economic and ecological benefits, simple production process, no secondary pollution during processing and using, safe use and no toxic and side effects.

The invention relates to a eutectic welding machine for die bonding of an LED (Light Emitting Diode) chip. The eutectic welding machine comprises a eutectic tray on which a step motor feeding mechanism capable of driving the eutectic tray to move horizontally is arranged, a target heating plate which is arranged below the eutectic tray and on which a heating plate drive cylinder used for driving the target heating plate to cling to the bottom of the eutectic tray is arranged, a sealing flat plate which is arranged above the eutectic tray, is connected with a sealing flat plate cylinder and is tightly combined with the upper end of the eutectic tray under the driving effect of the sealing flat plate cylinder to form a sealed cavity body, a chip compacting heat-conducting plate which is arranged in the sealed cavity body and is provided with a temperature sensor, a resonance energy conversion assembly which is connected with the chip compacting heat-conducting plate and is provided with a resonance cylinder, and an air pipeline assembly communicated with the inner part and the outer part of the sealed cavity body. Compared with the prior art, the eutectic welding machine for the die bonding of the LED chip has the advantages of good eutectic welding interface wettability, stable welding quality, small heating temperature balance error and the like.

The invention relates to a technique used acidity surfactant to remove oil well blocking and its formula and manufacturing method. The feature of the acidity surfactant formula is that its material weight ratio is as follows: polyoxy propylene-polyoxy ethylene glycerin ether 10-40%, polyoxy propylene-polyoxy ethylene phenol amine resin 10-45%, FC-NO1 fluorocarbon surfactant 0.0001%-0.035%, FC-3B fluorocarbon surfactant 0.0001%-0.05%, hydrochloric acid 3-10%, nitric acid 2-10%, and water 30-55%. The feature of the technique is as follows: the made-up 0.4%-0.6% acidity surfactant can be injected from hollow while running; then it can be replaced by 10-20m3 clear water. The invention has good effect and can improve yield.

The invention discloses a lithium ion battery silicon-carbon composite negative electrode material composite conductive agent, a negative plate and a preparation method of the negative plate. In termsof mass percentage, the composite conductive agent comprises the following solid components: 60-95% of a silicon-carbon composite material, 0.05-0.1% of carbon nanotubes, 0.5-2% of graphene, 0-20% ofan auxiliary carbon black conductive agent, 1-6% of carbon nanofibers, 1-5% of a dispersing agent and 2-8% of a binder. The invention also discloses a negative plate of the composite conductive agentand a preparation method of the negative plate. The lithium ion battery using the silicon-carbon composite negative electrode material composite conductive agent for the lithium ion battery providedby the invention is low in impedance and long in cycle life; and the overall performance of the lithium ion battery is greatly improved, the long-time use requirements of electronic products can be met, the market application prospect of products of battery manufacturers can be improved, and the important production practice significance exists.

The invention discloses a reactive polyurethane hot melt adhesive for bonding an aluminum plate and a wood veneer and a preparation method of the reactive polyurethane hot melt adhesive. The reactivepolyurethane hot melt adhesive is prepared from the following raw materials in parts by weight: 10-35 parts of isocyanate, 10-70 parts of aliphatic polyester diol, 20-50 parts of polyether diol, 5-20parts of aromatic polyester diol, 5-15 parts of thermoplastic resin, 0.05-0.5 part of an antioxidant, 0.01-0.1 part of a stabilizer, 0.05-0.5 part of a catalyst and 0.1-5 parts of an adhesion promoter. The adhesive has high initial adhesion and good later adhesion, can meet the adhesion requirement of an aluminum plate and a wood veneer, and can improve the working efficiency in the adhesion process.

The invention provides a thermosetting chip bonding film, a chip bonding film with a cutting disc, and a manufacturing method of a semiconductor device. The thermosetting chip bonding film is advantaged by high heat conductivity, and can be fully attached to the concave and convex shape of an adherend when attached to the adherend. The heat conductivity coefficient of the thermosetting chip bonding film is above 1W/mK after being thermosured, the thermosetting chip bonding film contains heat conductive particles with the heat conductivity coefficient of 12W/mK and above 75% of the integral weight relative to the thermosetting chip bonding film, and the detected melt viscosity of the thermosetting chip bonding film is below 200 PaS with the cutting rate of 50 sec-1 at a temperature of 130 DEG C.

The invention belongs to the field of refractory materials, and provides a method for preparing a refractory brick in an isostatic compaction mode. The method provided by the invention comprises the steps of composition of raw materials, preparation of sludge and formation of the refractory brick. The refractory brick is prepared from the following raw materials in percentage by mass: 45-65% of particle material with the particle size of 0.1-3mm, and 35-55% of matrix fine powder with the particle size of less than 0.044mm. The refractory brick is also additionally prepared from a binder, wherein the binder comprises a solid binder and water. The method comprises the following steps: stirring the particle material and solid binder in a runner wheel machine so that the solid binder is uniformly distributed in the particle material, adding the water, milling together, finally adding the matrix fine powder, and milling to obtain the sludge; and directly adding the sludge into a mold, and forming. The method shortens the sludge preparation period and production cost, is simple to operate, and has the characteristic of high yield.

The invention discloses a surface modification method for diamond micropowder for an ultra-fine diamond wire saw and belongs to the technical field of diamond micropowder production. By the adoption of the surface modification method for the diamond micropowder for the ultra-fine diamond wire saw, the problems that in the prior art, diamond micropowder is poor in dispersity and prone to accumulation and agglomeration are solved. The surface modification method comprises the following steps that (1) the diamond micropowder subjected to chemical plating is calcinated; (2) the calcinated diamond micropowder is pickled for activation through composite acid, and filtration and deacidification are conducted after activation; (3) dispersing treatment is conducted on the deacidified diamond micropowder through a cationic surface active agent; and (4) the dispersed diamond micropowder and the cationic surface active agent are added into electroplate liquid and evenly stirred and dispersed for later use. The surface modification method is suitable for surface modification of the diamond micropowder for the ultra-fine diamond wire saw.

The invention belongs to the technical field of design and manufacturing of chemical products and particularly relates to an efficient detergent used in industrial circulating water and a preparation method of the efficient detergent. The detergent is prepared from the following materials in parts by weight: 5-10 parts of polyoxyethylene fatty alcohol ether, 4-6 parts of polyoxyethylene octyl phenolic ether, 5-8 parts of triethanolamine oleate soap, 15-20 parts of isopropyl alcohol, 5-10 parts of trisodium phosphate, 2-4 parts of sodium tripolyphosphate, 3-5 parts of sodium carbonate, 3-5 parts of sodium hydroxide, 10-15 parts of sodium dodecylbenzenesulfonate and 35-48 parts of tap water. The preparation method comprises the step of synthesizing the materials under a certain condition. The efficient detergent is mainly used for cleaning an oil cooler in the industrial circulating water.

The invention discloses an antifoaming dust suppressant and a preparation method thereof. The antifoaming dust suppressant comprises, by mass, 50-89.99% of a dust suppressant, 0.01-20% of an antifoaming agent, and the balance of water, wherein the antifoaming agent is selected from one or more of alkyl silicone oil, alcohols, castor oil, palm oil and oleic acid. The antifoaming dust suppressant can eliminate foams in the dust suppressant or keep moderate foams in the dust suppressant to guarantee the homogeneousness and the stability of the dust suppressant and the wetting performance of the dust suppressant to dusts.

The invention relates to a preparation method of a siliceous hot repairing material with low cost and low water demand, and belongs to the field of refractory materials. The siliceous hot repairing material is prepared from 30-65 wt% of fused quartz, 15-40 wt% of silica, 10-20 wt% of waste silica bricks, 6-15 wt% of silica micro-powder, 1-6 wt% of a mineralizing agent, 4-10 wt% of a binding agent,1-5 wt% of a sintering aid and 0.1-1 wt% of a superplasticizer. The waste silicon bricks are used as a raw material, so that the material cost is obviously reduced; the construction water demand is 7-11%, so the secondary damage degree to a furnace wall is reduced; the siliceous hot repairing material has a high bonding strength with the silicon bricks, and has small corrosivity, and the siliceous hot repairing material and the silicon bricks have thermal expansion synchronism; and the product provided by the invention has the characteristics of good wear resistance, high softening temperature under load, good thermal shock stability, high wall-climbing rate and the like.

Pb-Sn-Sb-Ag alloy brazing filler metal is mainly used for soldering of metal coatings of an electronic device. The brazing filler metal comprises, by weight, 15.5-16.5wt % of Sn, 7.0-8.0wt% of Sb, 0.01-1.2wt% of Ag and the balance of Pb. The brazing filler metal is moderate in melting temperature, has excellent wettability for the metal coatings, and is good in brazing process and applicable to soldering of silver (alloy) coatings, gold coatings and copper of electronic devices, and thermal impact resistance of brazing seams is good.

The invention discloses surface treatment fluid for surface treatment of magnesium alloy and aluminum alloy composite parts and a method. The surface treatment fluid comprises inorganic acid, fluoride, a corrosion inhibition film-forming agent and an addition agent. The surface treatment fluid cannot cause the phenomenon that the aluminum alloy portions and the magnesium alloy portions on the composite parts are blackened and excessively corroded. By the adoption of the method of direct forming combination of the magnesium alloy and aluminum alloy composite parts treated by the surface treatment fluid and plastic, the magnesium alloy and aluminum alloy composite parts can be subjected to anodic oxidation in the same surface treatment fluid at the same time under the condition that a covering method and other methods are not used, and therefore uniform holes or a uniform rough surface is generated on the surface, and the magnesium alloy and aluminum alloy composite parts and the plasticare prompted to be subjected to direct injection molding and have the high binding strength. By the adoption of the method, the operating steps of nanometer injection molding of the magnesium alloy and aluminum alloy composite parts are simplified, the cost is reduced, and the production efficiency and the yield are effectively improved.

The invention provides plant extract nutrient bath cream comprising the following raw materials in percentage by weight: 1-5% of wormwood extract and 0.4-10% of fat agent, wherein the fat agent is at least one of glyceryl oleate, dodecyl lactate, tridecanyl lactate, olive oil PEG-7 ester and PEG-7 glyceryl cocoate. The invention also provides a preparation method of the plant extract nutrient bath cream. The bath cream provided by the invention adopts the wormwood extract has the effect of sterilizing and relieving itching and the fat agent capable of effectively maintaining water balance of human skin as the raw materials, so that the effects of sterilizing, relieving itching and nourishing skin are provided while the requirement of cleaning the skin is met, the materials such as a non-irritant preservative substituent, a skin conditioner providing skin nutrition and a mild and high foaming surfactant are cooperated to use, and thus the effects of deeply cleaning the skin, nourishing the skin and maintaining the skin smooth and soft are achieved.

The invention discloses a reactive polyurethane hot melt adhesive for low-temperature coating and a preparation method of the reactive polyurethane hot melt adhesive. The reactive polyurethane hot melt adhesive for low-temperature coating is prepared from the following raw material in parts by weight: 10-35 parts of isocyanate, 10-70 parts of aliphatic polyester diol, 20-50 parts of polyether diol, 5-20 parts of aromatic polyester diol, 0.05-0.5 part of antioxidant, 0.01-0.1 part of stabilizer, 0.05-0.5 part of catalyst and 0.1-5 parts of adhesion promoter. The adhesive provided by the invention has good fluidity and low viscosity at low temperature, and ensures later adhesive strength.

The invention discloses a plant extract rinse-free hand sanitizer and a preparation method thereof, and relates to the technical field of hand sanitizers. The hand sanitizer comprises the following raw materials in percentage by weight: 6-10% of a plant extract, 0.5-1.5% of a humectant, 2-3.5% of lauryl sodium sulfate, 1.5-4% of sodium chloride, 0.5-2% of a pH regulator, 3-4% of a slippery reduction agent and the balance of distilled water. According to the hand sanitizer, the broadleaf holly leaf and Chinese ilex leaf extract is used as a bacteriostatic agent, so that the hand sanitizer has good bactericidal ability; the slippery reduction agent can locally form high surface tension in a system, the contact feeling between skins is obviously improved, the effect is mild; the hand sanitizer not only has good cleaning feeling, but also reduces the smooth phenomenon in the washing process; besides, the sorbitol is used as a humectant, wehrein a layer of protective film can be left after moisture on the surface of skin volatilizes, so that loss of moisture in the skin is prevented or slowed down, the wettability of the skin is kept, fragrant and sweet smell can be increased, and a good skin care effect is achieved.

The invention discloses a solder tip cleaning device and cleaning method. The cleaning device comprises a box, a cleaning device body, a waste material storage device, a water supply device and a control circuit, wherein the box is provided with a through hole; a solder tip extends into the box through the through hole; the cleaning device body is located in the box; the solder tip makes contact with the cleaning device body so as to enable waste materials on the solder tip to be removed when extending into the box; the waste material storage device is detachably mounted in the box and arranged below the cleaning device body; and the water supply device is mounted on the box, located above the cleaning device body and used for supplying water to the cleaning device body; the control circuit is connected with the cleaning device body and the water supply device and used for controlling the cleaning device body and the water supply device to operate. The solder tip cleaning device cleansthe solder tip through rotation of a rolling wheel; waste tin is collected through the box; a water box adds water to the rolling wheel automatically; the cleanliness of a working table is kept; andthe solder tip cleaning device is simple and practical.

The invention relates to the technical field of cooling fans, in particular to an overturning device and a cooling fan. According to the overturning device and the cooling fan, after a wet curtain istaken out, a driving piece is used for driving an overturning piece to rotate clockwise, so that a second through hole is driven to move in the direction staggered with a first through hole until thefirst through hole and the second through hole are staggered, namely, the position, directly facing the overturning piece, of the second through hole is a non-through hole, and therefore a drainage hole is closed, water flow is further prevented from flowing to the bottom of the cooling fan through the second through hole, noise caused by water flow falling is avoided, and accordingly user experience is improved; and oppositely, after the wet curtain is installed, the driving piece is used again for driving the overturning piece to rotate anticlockwise, so that the second through hole is driven to move in the direction overlapped with the first through hole until the first through hole communicates with the second through hole, and therefore the drainage hole is opened, it is guaranteed that water flow flowing out of the drainage hole can flow to the wet curtain through the first through hole and the second through hole in sequence, and accordingly wetting effects of the wet curtain isguaranteed.

The invention relates to a simulated Mars soil concrete suitable for extrusion and a preparation method thereof. The simulated Mars soil concrete comprises simulated Mars soil, calcium silicate, hydroxypropyl methyl cellulose and water. Calculated by taking the mass of the simulated Mars soil as 100 parts, the concrete is prepared from the following components in parts by mass: 45 to 46 parts of calcium silicate, 57 to 59 parts of water and 0.4 to 0.5 part of hydroxypropyl methyl cellulose. The concrete is added into a screw extrusion device through a feeding port in the screw extrusion device, then a driving motor is started, and the concrete is extruded and moulded.

The invention relates to a honeycomb body (1) consisting of smooth and textured metal foils (2, 3) and to a method for the production of said body. The smooth foils (2) have different average roughnesses (12) or different oxide layer thickneses (6, 14) in relation to the textured foils (3).