106results about How to "Good hardness" patented technology

The invention belongs to the technical field of new polymer materials, and particularly relates to an ultraviolet-curable waterborne polyurethane emulsion as well as a preparation method and application thereof. According to the invention, polypropylene carbonate dihydric alcohol, diisocyanate and a reactive monomer are used as main raw materials; a UV-curable double bond group then is introducedso that the acrylate resin and the polyurethane resin are connected through chemical bonds, therefore, organic unification of respective excellent properties of the two resins is effectively achieved,and a film cured by the ultraviolet-curable waterborne polyurethane emulsion is high in hardness and has good solvent resistance, corrosion resistance, scratch resistance and mechanical strength. Moreover, the raw materials of the ultraviolet-curable waterborne polyurethane emulsion do not need an organic solvent, acetone is not required to be used as a solvent to reduce the viscosity of the system during preparation, the reactive monomer can reduce the viscosity of the system, the use of the organic solvent is avoided, the problem of VOC emission is further solved, and the pollution to the environment and the harm to health are reduced.

The invention relates to a graphene-carbon nano tube composite modified copper-iron alloy and a preparation method thereof. The preparation method comprises the following steps: first preparing graphene and a carbon nano tube-iron nano composite material, then mixing the graphene and the carbon nano tube-iron nano composite material with copper powder and iron powder, preparing a graphene-carbon nano tube composite modified copper-iron alloy material through SPS, and mixing the material with anode copper, carrying out vacuum melting to obtain a graphene-carbon nano tube composite modified copper-iron alloy ingot; and grinding the alloy ingot, carrying out hot forging and after-forging grinding, thermally rolling the ingot, and slowly reducing the heating temperature to room temperature to obtain the graphene-carbon nano tube composite modified copper-iron alloy. As a graphene-carbon nano tube is uniformly dispersed in the alloy, the copper-iron alloy is relatively high in compactness; and furthermore, compared with a pure copper-iron alloy, the graphene-carbon nano tube composite modified copper-iron alloy has the advantages that as the graphene and a carbon nano tube are high in mechanical property, the prepared copper-iron alloy is higher in Rockwell hardness and heat conductivity and has a very wide application prospect in all fields.

The invention discloses all-polyester resin for an HAA curable coil powder coating. The all-polyester resin is end-carboxyl saturated polyester resin, the average functionality is 1.85-1.95, the acid value is 68-74 mg KOH / g, the glass-transition temperature is 60-65 DEG C, the softening point is 102-108 DEG C, the 200 DEG C melt viscosity is 3000-6000 Pa.s, and the 180 DEG C reactivity is 60-100 s. The all-polyester resin is prepared from, by mass, 30-35% of dihydric alcohol, 52-63% of aromatic dibasic acid, 1.8-11.5% of aliphatic dibasic acid and 1.5-3.0% of polyhydric alcohol, wherein the monomer components are subjected to melt phase polycondensation to prepare the all-polyester resin. The invention further discloses a preparation method of the polyester resin. The polyester resin has high reaction activity and short curing time and is suitable for a fast curing system required by the coil coating, and the powder coating prepared from the polyester resin is excellent in overall performance and has good hardness, flexibility, weather resistance, chemical resistance, solvent resistance, corrosion resistance, adhesiveness, impact resistance and the like after being cured for 60 s at 280 DEG C.

The invention belongs to the field of organosilicone encapsulation glue, and discloses transparent organosilicone glue for COB (chip on board)-LED (light-emitting diode) encapsulation and a preparation method thereof. The raw material formulation of the transparent organosilicone glue for COB-LED encapsulation comprises the following components in parts by weight: 50-70 parts of a base material; 20-40 parts of modified MQ resin; 2-8 parts of hydrogen-containing silicone oil; 0.01-0.06 part of an inhibitor, 0.1-0.5 part of a catalyst and 0.5-1.5 part of a coupling agent, and the base material is vinyl silicone oil. The preparation method is as follows: the base material, the modified MQ resin, the hydrogen-containing silicone oil, the inhibitor, the catalyst and the coupling agent are mixed and stirred evenly, then vacuumized for deaeration, then encapsulated, and then cured to prepare the transparent organosilicone glue for COB-LED encapsulation. The transparent organosilicone glue for COB-LED encapsulation is good in hardness, high temperature resistant and non-yellowing, excellent in adhesion and transmittance, and environmentally-friendly and by-product-free.

The invention discloses a device and a method for quickly constructing a small water cellar. The device disclosed by the invention comprises an inflatable air bag corresponding to the inner wall of the water cellar and a steel pipe for inflating the air bag, wherein the steel pipe is inserted into the air bag and is fixedly connected with an upper port and a lower port of the air bag in a sealing manner. The method for quickly constructing the small water cellar by use of the device comprises the steps of excavating a foundation pit, pouring to form a cellar bottom, putting a constructing device, charging air at 5-6kpa to the device, pouring to form cellar walls and a cellar top, sucking air in the device and taking out the device; using cement mortar, waterproof mortar and cement to treat fine aggregate concrete inner walls; and finally, mounting a cellar cover. The device and the method for quickly constructing the small water cellar have the characteristics of the structure is simple, the use is convenient, the labor can be saved, the cost is reduced, and the construction period is shortened. In addition, the constructed water cellar is firm and durable.

The invention relates to an acrylic acid mixed powder coating, which is characterized in that the formula comprises the following components in pbw (part by weight): 25 to 40 portions of epoxy resin, 25 to 40 portions of acrylic acid resin, 0.5 to 2 portions of leveling agent, 30 to 35 portions of filler, 0.1 to 0.2 portion of system catalyst, and 0.1 to 2 portions of other additive. The acrylic acid mixed powder coating has the advantages of lower costs, simple preparation and production, no need for curing agent, better hardness, excellent chemical and pollution resistance, long outdoor endurance, and broad application prospects.

The invention relates to a photosensitive resin composition that has the advantages of high developability, good hardness, and good sputtered resistance. The invention also provides a method for manufacturing a color filter, color filter and a liquid crystal display device. The photosensitive resin composition comprises an alkali-soluble resin (A), a compound containing an ethylenically unsaturated group (B), a photoinitiator (C), an organic solvent (D), a pigment (E), and a compound (F).

A technology for the build-up welding of SiC+Al on the surface of Mg alloy includes abrasing the surface of Mg-alloy workpiece for removing oxide, flushing with alcohol, drying in air, coating the mixture of SiC particles, Al particles and adhesive, baking, and tungsten arc build-up welding under protection of inertial gas. Its advantages are high hardness and antiwear-anticorrosion nature of welded surface and low cost.

The invention discloses a short-term high-temperature resistant acrylic-based composition and a method for preparing a heat conducting fin by using the same. The short-term high-temperature resistant acrylic-based composition comprises a binding agent, a heatproof additive and a heat conducting powder, wherein the binding agent part is prepared from a prepolymer, a monomer crosslinking agent and a radical initiator, wherein the prepolymer is prepolymerized from an acrylic-based monomer with a single function group and a prepolymerization radical initiator, and the glass transition temperature of the acrylic-based monomer is lower than 50 DEG C below zero; the monomer crosslinking agent has two or more acrylic-based function groups; the heatproof additive is an oligomer or copolymer with a maleinimide chain segment; and the heat conducting powder is a known heat conducting powder. The invention also discloses a method for preparing a heat conducting fin by using the acrylic-based composition; and the heat conducting fin prepared by using the method still can keep the favorable hardness, surface viscosity and heat conducting property after being thermally aged for 10min at the temperature of 250 DEG C, even 260 DEG C, so that the requirement of an electronic product can be met better.

The invention discloses a forming method for preparing a photonic crystal workpiece with different structural colors based on a nano composite. Unlike photonic crystal materials prepared by conventional methods, the forming method is characterized in that thermosetting nanoparticles uniform in particle size are coated with a thermoplastic material in a packing mode to increase the order degree ofthe arrangement of the thermosetting nanoparticles during forming by virtue of the high-temperature flow field of the thermoplastic material; thus the workpiece has bright structural colors without angle dependence, and reflection of the structural colors at different wavelengths is realized by the nanometer size of the thermosetting nanoparticles.

The invention relates to a polyurethane wood substitution composition which comprises: (a) one or more organic polyisocyanate(s); (b) one or more polyether polyol(s), wherein the degree of functionality of the polyether polyols is 2-6 and the hydroxyl value of the same is 100-700; the one or more polyether polyol(s) is / are homopolymerized and / or copolymerized products of an alkylene oxide compound and an amido-free polyhydric alcohol compound; (c) one or more aliphatic polyester polyol(s), wherein the hydroxyl value of the aliphatic polyester polyols is 100-500, and the degree of functionality of the same is 2-4; (d) optional one or more thixotropic agent (s); (e) optional one or more dehumidizer(s); (f) optional one or more microsphere(s), wherein the density of the microspheres is 20-500kg / m<3>. The polyurethane composition provided by the invention has long gelation time; the prepared polyurethane wood substitution has high hardness and high glass-transition temperature.

The invention relates to a casting production method of a cast copper sculpture, and belongs to the field of handicraft production processes. The casting production method of the cast copper sculptureis characterized in that the formula of mold material is controlled, the formula of the mold material is adjusted under different temperature conditions, expansion or shrinkage of the temperature change of a wax mold is avoided, then the situation that the wax mold is broken and retracted is avoided, meanwhile, the roasting temperature is controlled in the roasting process of a mold shell, the phase change time of the mold shell is delayed, expansion and crushing of the mold shell caused by rapid temperature increase are avoided, smooth proceeding of subsequent operation is guaranteed, and afine and accurate casting result is obtained. In the casting operation, 62 brass is selected as a casting raw material, the 62 brass has relatively strong strength, and has enough hardness and relatively good plasticity, the phenomena of segregation and looseness are not easy to occur, the welding performance is good, and the production quality of the copper sculpture is guaranteed.

The invention discloses a high-hardness impact-resistant heat-insulation foamed plastic which comprises the following raw materials in parts by weight: 57-60 parts of ABS (acrylonitrile butadiene styrene) resin, 32-35 parts of EVA (ethylene vinyl acetate) resin, 22-26 parts of epoxy resin, 15-18 parts of phenolic resin, 3-3.6 parts of nylon 66 fibers, 2.5-2.9 parts of glass fibers, 2.4-2.7 parts of a silane coupling agent A-172, 15-18 parts of a foamer K, 3-6 parts of supercritical nitrogen gas, 9-12 parts of supercritical carbon dioxide, 3-6 parts of a polyethylene-octene copolymer elastomer (POE), 2.1-2.4 parts of diisononyl phthalate (DINP), 3.7-4 parts of epoxy octyl stearate, 7-10 parts of fumed silica, 25-28 parts of wollastonite powder, 17-21 parts of augite powder, 10-13 parts of mica powder, 0.7-2.1 parts of an antioxidant RD and 2.4-2.8 parts of an antioxidant 4010NA.

The invention discloses a nano-scale environment-friendly water-based wood paint with no toxic gas, good temperature resistance, good adhesion, high hardness, and good impact resistance. The nano-scale environment-friendly water-based wood paint provided by the invention comprises the following components: 40-50 parts of water-based polyurethane resin, 30-40 parts of deionized water, 15-25 parts of nano-scale multi-body slurry, 2-5 parts of a film-forming aid, 0.2-1 part of a de-foaming agent, 0.3-0.5 parts of a wetting leveling agent, 0.2-0.8 parts of a slipping agent, 2-4 parts of a matting agents, and 0.5-1.5 parts of a thickening agent. The paint provided by the invention is environment-friendly and non-toxic. The paint has good water-prevention property and good hardness. With the paint, a paint surface is smooth and bright, and has no bubble. A brushing effect is excellent.

The invention relates to a method for evaluating lodging resistance of corn stalks. Bark puncture strength between nodes below stalk spike nodes is determined, the inclination angle between nodes above spike nodes is determined, and the lodging resistance of the stalks is objectively and comprehensively evaluated in combination with two aspects of bark puncture hardness and flexibility. The actual condition of field operation is identified according to corn stalk lodging resistance, defects of an original single evaluation method for stalk lodging resistance are overcome, the hardness factor of stalks below the spike nodes is considered, the toughness factor of stalks above the spike nodes is combined, the stalk lodging resistance can be accurately and comprehensively evaluated, and the obtained result can be used in corn breeding and production for reference.

The invention relates to a solar photoelectric photo-thermal integrated assembly and a solar combined heat and power generation system of the solar photoelectric photo-thermal integrated assembly. The solar photoelectric photo-thermal integrated assembly is characterized by comprising a photovoltaic cell panel provided with a metal outer frame, a metal sheet type heat exchanger and a heat-preservation material layer, wherein the metal sheet type heat exchanger and the heat-preservation material layer are sequentially arranged on the back surface of the photovoltaic cell panel in parallel and in an overlapped mode, and are rapidly fixed in the metal outer frame of the photovoltaic cell panel through a metal fixing clamp, and the standard photovoltaic cell panel can be rapidly modified into the photoelectric photo-thermal integrated assembly. The photoelectric photo-thermal integrated assembly has the advantages of being compact in structure, high in efficiency, small in pressure loss, light in weight, flexible to install, high in pressure bearing performance, resistant to corrosion, low in cost and the like, further reduces the initial investment and installation space of a medium and low temperature solar thermoelectric system, lowers the operation expenses of the system, and is suitable for civil and industrial occasions requiring for both heat and power.

The invention discloses a process for preparing a heat-resistant steel plate. According to the process, bottom paint and surface paint are sprayed and baked on a pre-coating steel plate in sequence, wherein the bottom paint and the surface paint are prepared from organic silicon modified polyester which is used as the binder of a paint composition and other auxiliaries. In the actual application, the organic silicon modified polyester has excellent high-temperature resistant performance, so that the prepared paint composition has better characteristics and can be sprayed on the surfaces of iron, aluminum, or stainless steel and other metals; and moreover, the paint composition is widely applied to heat-resistant materials like a baking tray, an electric frying pan, a barbecue tool.

The invention relates a mixture of a urethane-aldehyde resin UA prepared by condensation of an aldehyde A1 and an alkyl urethane U, and of a novolak PA, to a process for the preparation of the said mixture, and a method of use thereof as adhesion promoter in rubber goods.

The invention provides a refractory ceramic product and a manufacturing technology thereof and relates to the technical field of ceramics. The refractory ceramic product comprises 200-350 weight parts of blanks, 50-100 weight parts of glazes and 20-40 weight parts of auxiliaries. The raw material composition and the manufacturing technology of the refractory ceramic product provided by the invention are both strictly controlled; at the aspect of the raw materials, blanks, glazes and auxiliaries are reasonably prepared, so that the roasted ceramic product has excellent high temperature resistance, chemical stability, hardness and toughness; at the aspect of the technology, an once-firing manner is adopted for roasting the ceramic, so that the shovel strength is increased and the cost is lowered; besides, a method for gradually increasing temperature and roasting in stages is adopted for roasting, so that the cracking and uneven surface caused by the rapid loss of the ceramic water can be avoided, the yield of the product can be greatly increased and the refractory ceramic product is worthy of popularization in the market.

The invention provides a composite board and a preparation method thereof, a shell and electronic equipment, wherein the composite board comprises an impact-resistant layer, a hard layer and an enhancing layer, wherein the hard layer is arranged on the first surface of the impact-resistant layer; the enhancing layer is arranged on the surface of the hard layer separating from the impact-resistantlayer. The inventor discovers that the composite board is simple in structure and easy in implementation; under the matching action of the three-layer structure, the composite board is higher in hardness, resistant in scratching, better in toughness, higher in impact resistance and better in use performance.

The invention relates to the field of waste textile recycling, and particularly provides a waste spinning regenerated composite fiberboard and a preparation method and application thereof. The invention provides a preparation method of a waste spinning regenerated composite fiberboard. The preparation method combines two non-woven processes: carding lapping and airflow lapping, prepares a first fiberboard from waste spinning chemical fibers and low-melting-point fibers, prepares a second fiberboard from waste spinning fibers and low-melting-point fibers, and combines the first fiberboard and the second fiberboard to obtain the waste spinning regenerated composite fiberboard. The adaptability of the waste spinning fibers and a production process is improved by the preparation method, the problem of low reutilization rate of waste textiles in the prior art is better solved, 100% utilization of the waste textiles is realized, meanwhile, the use of rubber powder is avoided, and formaldehyde pollution is not generated in the production process and subsequent use. The provided waste spinning regenerated composite fiberboard has sound insulation, sound absorption and heat preservation properties, and is pollution-free.

The invention provides a ceramic blank and a manufacturing method thereof, and relates to the technical field of ceramics, the ceramic blank includes 80-120 parts by weight of a based blank, 10-20 parts by weight of an enhancer and 1-5 parts by weight of an additive; the production process of the ceramic blank comprises the following steps: 1) making mud, 2) making a wet blank, and 3) drying the blank. Through the improvement of raw materials and production methods, the prepared ceramic blank has good chemical stability and good mechanical strength, and the prepared ceramic blank also has good toughness and shaping property, is anti-falling and not easy to break, has low production cost, long service life and wide application range, and is worthy of promotion.

The invention provides water-based ink for the intaglio printing process of aluminum foil. The ink is prepared from, by mass, 20-30% of water-based organic pigment, 20-25% of water-based acrylic resin, 20-25% of water-based acrylic emulsion, 0.5-1.5% of flatting agent, 0.1-0.3% of defoaming agent, 10-15% of ethyl alcohol and 10-20% of water. A preparation method includes the steps of evenly dispersing water, acrylic resin, acrylic emulsion, water-based pigment and ethyl alcohol, heating the materials till the temperature is 30-55 DEG C, evenly stirring and grinding the materials, adding flatting agent and defoaming agent, controlling the viscosity of ink for 10-20 seconds, and obtaining the water-based ink. The water-based ink is excellent in performance, safe and environmentally friendly, harms to a user can be reduced, the preparation method of the water-based ink is simple, the viscosity of the ink is easy to control, and the ink has wide application prospects.

It is an object of the present invention to provide an orally disintegrating tablet that has desirable oral disintegrability and excellent tablet hardness, a process for producing the same, and the like.The present invention provides an orally disintegrating tablet comprising:at least one diluent selected from D-mannitol, lactose, trehalose, xylitol, maltitol, and erythritol; a drug; a disintegrant; andat least one binder selected form methacrylic acid copolymer S, methacrylic acid copolymer L, methacrylic acid-ethyl acrylate copolymer, ethyl acrylate-methyl methacrylate copolymer, and methyl methacrylate-butyl methacrylate-dimethylaminoethyl methacrylate copolymer.

The invention provides a high-quality antimicrobial mildew-resistant paint, and preparation and application methods thereof. The high-quality antimicrobial mildew-resistant paint comprises a vinyl acetate-dibutyl maleate copolymer, silicon dioxide, barium sulfate, calcium carbonate, casein, cupric chloride, aluminum hydroxide, zinc pyrithione, benzalacetone, zinc yellow, carbon black, porcelain clay powder, dimethylbenzene, isopropanol and aids. The high-quality antimicrobial mildew-resistant paint has reasonable components; and the product has special antimicrobial and mildew-resistant effects, can implement moist insulation and thermal insulation, and has high stability and favorable effects. The preparation method of the high-quality antimicrobial mildew-resistant paint has the advantages of simple and feasible technique, high production efficiency and low application cost, and is simple to operate and easy to implement. The produced product has the advantages of stable quality and favorable adaptability, is convenient to use, and has higher popularization and application value.

The invention discloses heat-clearing and throat-nourishing buccal tablets and a preparation method thereof. Each buccal tablet comprises the following raw materials in parts by weight: 13-15 parts of licorice, 5-7 parts of phyllanthus emblica, 20-30 parts of mint, 9-11 parts of reed rhizome, 5-6 parts of schisandra chinensis, 3-5 parts of platycodon grandiflorum flower, 5-10 parts of cinnamon, 10-12 parts of jasmine, 5-7 parts of mottled bamboo root, 4-6 parts of cluster mallow fruit, 2-4 parts of rohdea japonica, 4-6 parts of corn stigma, 3-5 parts of madder, 5-7 parts of bitter gourd root, 4-6 parts of circium japonicum, 40-50 parts of maltodextrin, 2.5-3.0 parts of aspartame, 1.8-2.5 parts of ethyl cellulose and 1.0-1.5 parts of magnesium stearate. The buccal tablets are uniform in color and good in hardness; after being orally taken, the buccal tablets are strong in tea fragrance, fine in taste, cool and delicious; in addition, the buccal tablets, added with traditional Chinese medicine extracts such as the licorice, the mint and the jasmine, have certain heat-clearing and throat-nourishing effects; after the buccal tablets are taken for a long time, the effects of nourishing throat, clearing heat, stopping pain, relieving cough and diminishing swelling can be effectively achieved; particularly, a better curative effect is provided for a chronic pharyngitis patient who takes the buccal tablets for a long time.

The invention discloses malic acid radical water-borne epoxy resin (shown in a formula I) and a preparation method thereof. The preparation method of the malic acid radical water-borne epoxy resin comprises the following steps: firstly, an malic acid and an allyl reagent react through dehydrohalogenation under the condition that an acid-binding agent exists to obtain malic acid diallyl ester (shown in a formula II); then the malic acid diallyl ester reacts with a peralcohol to obtain the malic acid radical water-borne epoxy resin. The malic acid radical water-borne epoxy resin uses the malic acid which is rich in biological resource as the raw material, is favorable for lowering the amount of oil resources consumed by a high polymer material and lowering the emission of CO2, and opens up a new approach to prepare the water-borne epoxy resin. The malic acid radical water-borne epoxy resin has the characteristic of water-solubility, can be applied in the field where water is used as a resolvent, and has a wide application prospect.

A heated and / or cooled roll, i.e., a thermo roll (1), of a fiber web machine comprises a cylindrical inner shaft (2) for carrying a load, a metallic outer layer (4) surrounding the inner shaft, and flow channels (5) for a heat-transfer agent, arranged in connection with an interface between the inner shaft and the outer layer. The thermo roll (1) is manufactured by assembling the inner shaft (2) and the outer layer (4). The flow channels (5) of the thermo roll consist of flow grooves (5) formed before the assembly of the inner shaft and the outer layer on an outer surface (2a) of the inner shaft (2) and / or an inner surface of the outer layer (4).

The invention discloses an amorphous coating, a matrix comprising the same and a preparation process of the matrix comprising the amorphous coating and belongs to the technical field of coating preparation. The chemical components of the coating include, by mass, 40-60% of Ni, 20-40% of Zr, 2-15% of Zb and 1-8% of Si. A metal intermediate layer is arranged between the matrix and the coating and can improve the bonding strength between the coating and the matrix. The process comprises the following steps of 1, preparing the matrix and conducting pretreatment; 2, weighing metal powder for the intermediate layer and metal powder for the coating and conducting pretreatment; 3, preparing the metal intermediate layer; and 4, preparing the coating. Through the reasonable process design, the amorphous phase content and the bonding strength of the coating can be effectively improved when the large-area amorphous coating is prepared, and the comprehensive performance of the coating is improved.

The invention relates to a modified PVC (polyvinyl chloride) foaming building material product, and belongs to the technical field of a building material. The modified PVC foaming building material product consists of polyvinyl chloride, light calcium carbonate, heavy calcium carbonate, additive and a modifying agent, wherein the mass ratio of the polyvinyl chloride to the light calcium carbonate to the heavy calcium carbonate to the additive to the modifying agent is (95 to 110) to (20 to 30) to (20 to 30) to (15 to 20) to (0.4 to 0.8). The additive consists of a stabilizer, glycerin monostearate, titanium oxide, color powder, a lubricating agent, a foaming agent, a foaming adjusting agent and a catalyst, and the modifying agent consists of PE wax and an ultraviolet absorption agent. After the ultraviolet absorption agent 531 is added, the novel modified PVC foaming building material product is good in aging resistance and good in hardness; the foaming rate is higher than that of products of the same kind, thus the mass per meter is light, and the convenience in installation and transportation is realized. Meanwhile, the PE wax is added into the formula, so that appearance precision and brightness of the product are improved.