55results about How to "Easy to defoam" patented technology

The invention relates to solid detergents containing hydroxy mixed-ether-type non-ionic tensides.

The invention relates to a self-defoaming water-based polyurethane emulsion which is prepared by the following steps: vacuum-heating macromolecular polyhydric alcohol to 110-140 DEG C, and dewatering for 0.5-2.0 hours; adding hydroxyl silicone oil and reducing the temperature to 60-75 DEG C, and stirring for 0.5-1.0 hour; adding isocyanate and stirring for reaction at 70-85 DEG C for 1.5-3.0 hours; adding a hydrophilic chain extender and a crosslinking agent, and stirring for reaction for 1.0-2.0 hours to obtain a prepolymer; reducing the temperature of the prepolymer to 40-50 DEG C; adding a solvent, dropwise adding a neutralizer and stirring for 15-45 minutes; and after the chain extender is dissolved in water, dropwise adding into the neutralized prepolymer, and stirring at a stirring rate of 1,000-3,000rpm for 20-40 minutes to obtain the emulsion. According to the self-defoaming water-based polyurethane emulsion provided by the invention, the chemical structure of the molecular chain segment of polyurethane is changed from a synthesis source of polyurethane, and the silicon with low surface energy is introduced so that the emulsion has excellent defoaming ability; and after film formation, the emulsion has good water resistance and solvent resistance.

The invention discloses an insulative potting composite material with high thermal conductivity and a preparation method thereof. The insulative potting composite material is prepared by mixing a component A with a component B at a weight ratio of 1:1 and solidifying at the temperature of 50-150 DEG C for 20-50 minutes. The insulative potting composite material has the advantages that the thermalconductivity reaches 3.5 W / m.K (ASTM D5470, HotDish method) and the electrical insulation property and mechanical properties are excellent. According to the invention, the insulative potting composite material with high thermal conductivity is prepared by using vinyl silicone oil as a base adhesive and hydrogen-containing silicone oil as a solidifying agent, using spherical, flaky, acicular and prismatical heat-conducting fillers to fill, and forming plenty of heat conducting channels by virtue of the reasonable combination of the heat-conducting fillers of different shapes; and the solidified insulative potting composite material has excellent electrical properties and mechanical properties.

The invention relates to a coal dressing collecting agent and a preparing method of the coal dressing collecting agent, in particular to a coal collecting agent with butyl-octyl alcohol residual liquid in petrochemical enterprises as raw materials and a preparing method of the coal collecting agent and belongs to the technical field of preparing of coal slime flotation collecting agents. According to the coal dressing collecting agent, the butyl-octyl alcohol residual liquid in the petrochemical enterprises and phthalic anhydride serve as raw materials, under the action of catalysts, firstly, the temperature is raised to 70-150 DEG C, and a backflow reaction is performed for 1-5 hours; then, the temperature is raised to 120-300 DEG C, water phases and organic phases are separated after the backflow reaction is performed for 1-5 hours, drying and dewatering are performed on the organic phases, and the coal dressing collecting agent can be obtained. According to the coal dressing collecting agent and the preparing method of the coal dressing collecting agent, the preparing process is simple, the obtained product is good in flotation capacity, and industrialized production and industrialized application are facilitated. Meanwhile, the problem that the butyl-octyl alcohol residual liquid cannot be easily processed with high efficiency and high yield is well solved.

The invention discloses a low-power LED lamp bead low-thermal-resistance packaging structure and a packaging process. The structure comprises a base, a supporting base, a heat conduction device, a light-emitting assembly, an insulating sleeve and a protection assembly, wherein a first mounting groove is formed in the top of the base, the supporting base is arranged on the inner wall of the first mounting groove, and the supporting base comprises a base plate; a second boss is fixedly installed at the top of the base plate, a bonding pad base is fixedly installed at the top of the second boss,a tangent plane is arranged at the top of the bonding pad base, first inserting grooves are formed in the two sides of the bonding pad base, electrode pins are inserted into the inner walls of the first inserting grooves, and one ends of the electrode pins are fixedly installed on the inner wall of the tangent plane. The invention has the beneficial effects that the fourth installation groove is formed in the bottom of the copper column, a heat conduction pipe is fixedly installed on the inner wall of the fourth installation groove, a fifth installation groove is formed in the inner wall of the heat conduction pipe, a heat conduction column is fixedly installed on the inner wall of the fifth installation groove, first ribs are evenly installed on the outer wall of the heat conduction pipeand the outer wall of the heat conduction column, and gaps between the first ribs are filled with heat dissipation silica gel, so the effect of releasing heat energy is achieved.

This invention discloses a white LED nano-phosphor powder. The nano-phosphor powder comprises nano-amorphous silicon nitride powder body and phosphor powder; the weight of the nano-amorphous silicon nitride powder body is 25 to 35 percentage of the weight of the phosphor powder. The nano-phosphor powder is prepared by the following steps: stirring and prilling the nano-amorphous silicon nitride powder body and the phosphor powder; after obtaining compound phosphor powder, preparing phosphor glue; covering the phosphor glue on a LED chip; and adhering the compound phosphor power on the surface of the LED chip by the gravity. Thus, the white LED nano-phosphor powder has high refractive index and high light transmittance, can protect the LED chip and increase the luminous flux of the LED, has small viscosity, is easy to defoam, is suitable for filling and compression molding, and makes the LED get better durability and reliability.

The invention discloses a collecting agent for water-soluble cations, a preparation method of the collecting agent for the water-soluble cations and application of the collecting agent for the water-soluble cations. The collecting agent for the water-soluble cations is characterized in that the collecting agent for the water-soluble cations is an alkylamine surface-active agent with two hydroxypropyl bases or two chlorinated hydroxypropyl bases in each alkylamine molecule. The preparation method of the collecting agent for the water-soluble cations comprises the steps that continuous stir is carried out, and aliphatic amines in a container are dissolved with absolute ethyl alcohol; propylene epoxides or epoxy chloropropane is slowly added under the conditions that the temperature is 25 DEG C, the backflow state is formed, and the time ranges from 2.5 hours to 3.5 hours, and the reaction is continuously carried out for 10 hours, wherein the quantity ratio between aliphatic amines and the propylene oxides or the epoxy chloropropane is 1 to 2-3; reactant is transferred to a distillation system, and unreacted propylene oxides or unreacted epoxy chloropropane and unreacted absolute ethyl alcohol are removed through distillation under the appropriate distillation conditions; the temperature of a reaction system is lowered to be equal to the room temperature, and the needed collecting agent can be obtained. The collecting agent for the water-soluble cations is high in water solubility, and can be used for reverse flotation desiliconization of iron ore or flotation of silicate minerals, and when the collecting agent for the water-soluble cations is used for flotation of artificial mixed ore, iron ore concentrate with the iron grade larger than 65% can be obtained at the normal temperature, wherein the artificial mixed ore is formed by hematite and quartz in the mode that the mass ratio between the hematite and the quartz is 3 to 2.

The invention relates to a novel UV cross-linked cured multi-layer optical adhesive film. The novel UV cross-linked cured multi-layer optical adhesive film sequentially comprises a first release layer, a first viscous layer, a non-viscous layer, a second viscous layer and a second release layer, wherein the first viscous layer and the second viscous layer each are an acrylate adhesive layer, the non-viscous layer is an ethylene vinyl acetate copolymer layer, and the adhesive film is subjected to UV curing. The invention further provides application of the novel UV cross-linked cured multi-layer optical adhesive film. By adopting the novel UV cross-linked cured multi-layer optical adhesive film and the application thereof, after UV curing, the adhesive layer is not prone to fracturing if being bent, good spatial malleability is achieved, and the phenomena of adhesive overflowing and difficult defoaming in the LOCA optical adhesive fitting process are avoided; in the mold cutting process, wiredrawing does not exist, and adaptability to sizes of fit screens is wide; and the production cost is low, processing is easy, the solid content is 100%, energy conservation and environmental protection are achieved, in the processing and use processes, defoaming is easy, adhesive overflowing is avoided, adaptability is wide, and the fitting good product rate is increased.

The present invention relates to a comprehensive recovery process of lithium polymetallic ore with fine-grained niobium and tantalum. The process includes rough grinding of raw ore, sedimentation desliming, flotation, reunion magnetic separation, re-election and other steps. The process method of the present invention is particularly suitable for Due to the large amount of mud in the ore, the temperature in the mining area is low all year round, the associated niobium and tantalum minerals are of low grade, and the comprehensive recovery of lithium polymetallic ore with fine particle size embedded, and the process technology is advanced and reliable, simple and reasonable, and highly targeted. Raw ore grinding The ore fineness requirement is not high, the amount of regrinding is small, the operating cost is low, the comprehensive recovery rate is high, and it has a good industrialization prospect.

The invention provides low-viscosity high-heat-conductivity organic silicon electronic pouring sealant and a preparation method thereof. The method comprises the following steps of: mixing high viscosity and low viscosity of vinyl polydimethylsiloxane; adding aluminum oxide with particle size of 1-5 microns as heat conduction filler; further adding a compound coupling agent formed by combining aluminic acid ester, KH570 (gamma-methylacryloyloxypropyl trimethoxysilane) and KH550 (gamma-aminopropyl triethoxysilane) and a compound flame retardant formed by combining melamine cyanurate and aluminum hydroxide into a base material system; and preparing the electronic pouring sealant according to a proper proportion. The prepared pouring sealant has high heat conductivity up to 2.5-3.0W.m<-1>.K<-1>, low viscosity of 2000-3000mPa.s, perfect fluidity and good flame retardance effect; and the production cost is low.

The invention provides a polyurethane template for modeling concrete and a preparation method thereof. The polyurethane template raw materials include hydroxyl-terminated silicone polyether polyol, isocyanate, chain extender, filler, plasticizer, anti-aging agent, color paste, anti-settling agent, defoamer, catalyst, water remover, sepiolite powder, boron nitride nanotubes, cross-linked polytetrafluoroethylene powder, alkali-resistant glass fiber; preparation method: polyol polyether polyether with hydroxyl-terminated silicone, chain extension agent, filler, plasticizer, and anti-aging agent to obtain mixture A; mix sepiolite powder, boron nitride nanotubes, and cross-linked polytetrafluoroethylene powder to obtain mixture B; mix alkali-resistant glass fiber with color paste Obtain mixture C; mix mixture A, B, C, anti-sedimentation agent, defoamer, catalyst, water remover and isocyanate, and then perform stirring, defoaming, mold casting and curing in sequence to obtain a polyurethane template. The polyurethane template of the present invention has excellent performance, and the material body has low viscosity during the preparation process, is easy to defoam and is easy to operate.

The invention discloses a visible light-cured adhesive, which comprises the following ingredients (by weight): 20-65 parts of polyurethane acrylate, 15-70 parts of a light-cured monomer, 1-8 parts ofa photoinitiator, 0.2-8 parts of a leveling agent, 0.1-5 parts of an antifoaming agent and 0.2-4 parts of a coupling agent. The photoinitiator is an organic phosphine photoinitiator. The visible light-cured adhesive can be cured under visible light, and the curing process is very convenient. When being applied between a display screen and a glass cover plate, the visible light-cured adhesive has agood self-leveling effect, is easy to discharge foams, has an adhesion effect, and makes the glass cover plate and the display screen to be tightly combined and improves wear resistance. In addition,the visible light-cured adhesive has low application cost. In comparison with the application cost of a traditional UV photocureable adhesive, the application cost of the visible light-cured adhesiveis greatly reduced.

The invention discloses an insulative potting composite material with high thermal conductivity and a preparation method thereof. The insulative potting composite material is prepared by mixing a component A with a component B at a weight ratio of 1:1 and solidifying at the temperature of 50-150 DEG C for 20-50 minutes. The insulative potting composite material has the advantages that the thermalconductivity reaches 3.5 W / m.K (ASTM D5470, HotDish method) and the electrical insulation property and mechanical properties are excellent. According to the invention, the insulative potting composite material with high thermal conductivity is prepared by using vinyl silicone oil as a base adhesive and hydrogen-containing silicone oil as a solidifying agent, using spherical, flaky, acicular and prismatical heat-conducting fillers to fill, and forming plenty of heat conducting channels by virtue of the reasonable combination of the heat-conducting fillers of different shapes; and the solidified insulative potting composite material has excellent electrical properties and mechanical properties.

The invention discloses a low-power LED lamp bead low-thermal-resistance packaging structure and packaging technology. The technical solution is: including a base, a support seat, a heat conduction device, a light-emitting component, an insulating sleeve and a protection component, and an installation groove is opened on the top of the base. 1. The inner wall of the installation groove 1 is provided with a support seat, the support seat includes a chassis, the top of the chassis is fixedly installed with the boss 2, the top of the boss 2 is fixedly installed with a pad seat, and the top of the pad seat A cut surface is provided, a slot 1 is opened on both sides of the pad seat, an electrode pin is plugged into the inner wall of the slot 1, and one end of the electrode pin is fixedly installed on the inner wall of the cut surface. The beneficial effects of the present invention are: the copper column The bottom is provided with installation groove 4, and the inner wall of installation groove 4 is fixedly installed with a heat conduction pipe. The gap of the sheet is filled with heat dissipation silica gel, which has the effect of releasing heat energy.