350results about How to "Good anti-sag performance" patented technology

The invention discloses a preparation method of nano-calcium carbonate SCC-2 special for a silicone sealant, belonging to the technical field of inorganic chemical industry. According to an adopted technical scheme, the method comprises the following steps of: calcining limestone, crushing to obtain CaO; digesting, refining and aging the CaO in a hot state in the ratio of 1:4.8 of CaO to H2O; adding 1 percent of white granulated sugar crystal form control agent for undergoing a carbonation reaction to obtain CaCO3 slurry; performing activation surface treatment; and dehydrating, drying, crushing and degrading to obtain a nano-active CaCO3 product of 60-100 nanometers. The crystal form, size, regularity, oil absorption value and pH value of CaCO3 are controlled, so that 'hard aggregation' among particles is avoided from a surface modification production process, and the product has low oil absorption value and high bulk specific weight and has high dispersity in polymers.

The invention discloses an automobile water-based dual-component middle coating excellent in performance and a preparation method thereof. The water-based middle coating is composed of a component A and a component B. The component A is composed of hydroxy acrylic resin, powder syrup, auxiliaries and cosolvent, wherein powder syrup contains deionized water, amine neutralizer, auxiliaries, extender pigment and pigment. The component B is composed of a curing agent, auxiliaries and cosolvent. After being put in according to the formula of the powder syrup of the component A, materials are dispersed at a high speed for 15 min and then enter a grinding machine to be ground till the granularity is smaller than 30 micron, then powder syrup is obtained, and hydroxy acrylic resin, powder syrup, auxiliaries and cosolvent are evenly mixed to obtain the component A. The component A and the component B are mixed in certain proportion, viscosity is adjusted by adding deionized water, and a middle coating film is obtained through spraying construction. By means of the water-based middle coating, the water-based performance of the automobile middle coating is achieved, the VOC content is greatly decreased, and excellent comprehensive performance is achieved.

In one embodiment, the invention is an composition comprising: a) one or more isocyanate functional polyether polyurethane prepolymers; and b) one or more prepolymers of one or more polyisocyanates and one or more polyesters wherein the terminal groups on the polyester polyol polyurethane prepolymer are the residue of a monofunctional polyalkylene glycol (hereinafter capped polyester polyurethane prepolymer) or one or more polyester polyols which are capped with the residue of one or more monofunctional isocyanates (hereinafter isocyanate capped polyesters); wherein the composition is a low viscous paste at temperature of from about 40 to about 80° C. and is high viscous paste at a temperature of from about 40° C. or less. In a preferred embodiment the composition further comprises c) one or more catalysts for the reaction of isocyanate moieties with hydroxyl groups. In another embodiment the invention is a method of bonding two or more substrates together which comprise contacting the two or more substrates together with a composition according to this invention disposed along at least a portion of the area wherein the substrates are in contact wherein the composition is a low viscous paste. In a preferred embodiment the composition is heated to about 40° C. to about 80° C. and converted to a low viscous paste prior to contacting it with the one or more substrates.

The invention introduces a solvent-free epoxy weight anticorrosion paint used for coated joints of a steel buried pipeline, which comprises a component A and a component B; wherein the mass percentage of each raw material in the component A comprises: 30-45% of epoxy resin, 5-15% of glycidyl ether active diluent, 0.05%-1% of silicone defoamer, 20-35% of compound anti-rust pigment, 3-10% of other pigments, 5-15% of barium sulfate mineral filler, 10-20% of other mineral fillers and 0.3-1.5% of polyamide wax; the mass part of each raw material in the component B comprises: 10-25 parts of polyamide curing agent, 5-15 parts of Mannich base and 0.5%-2 parts of curing accelerator; and the mass ratio of the component A to the component B is 100 to 15-35. The paint provided by the present invention has the advantages of pure epoxy, environmental friendly performance and saved resource due to solvent-free property; and is capable of raising the anti-corrosive property, chemical resistance property and insulating property; and is capable of raising the toughness resistance, wear resistance and impact resistance of the coating by employing the mineral fillers.

Disclosed desulfurized-gypsum-base lightweight spraying gypsum mortar is composed of the following compositions in parts by weight: 50-65 parts of desulfurized gypsum, 20-30 parts of building sand, 3-5 parts of vitrified microsphere, 10-20 parts of stone powder, 0.1-0.5 part of a retarder, 0.1-0.3 part of cellulose ether, 0.02-0.04 part of an air-entraining agent, and 0.05-0.1 part of starch ether. The desulfurized-gypsum-base lightweight spraying gypsum mortar employs mechanical spraying for construction, possesses the dry density less than 1000 Kg/m<3>, the heat-conduction coefficient of 0.20 W/(m*K) and the compressive strength lager than 4.0 MPa, and possesses the characteristics of being light in weight, low in heat-conduction coefficient, high in strength and suitable for mechanical spraying construction, and the like.

The invention relates to the crucible manufacturing field and is a process for producing an arc quartz crucible by vacuum plus coating, equipment, products thereof. The invention solves the problems that the crucible manufacturing process in the prior art can not solve the operating requirements of long time, high temperature, and high purity of the quartz crucible, a uniform high purity quartz layer can not be formed in the vacuum state by uniform spraying, the layered spraying can not be accurately and timely carried out, and the like; therefore the process and the equipment for producing the arc quartz crucible by vacuum plus coating are provided; the quartz sand is poured into a vacuum mould to shape a prebuilt shape which is put into a founded chamber; a vacuum pump is started and the temperature is controlled, and then the melting and preheating begin; by controlling two hoppers of a double-hopper charging machine, the high-purity quartz sand is sprayed into the quartz crucible in the process of melting, and then mixing spraying coating is sprayed; the vacuum pump is closed during keeping the temperature. The quartz crucible produced by the process and the equipment of the invention has strong non-deformability of long time and exhaustion resistance in high temperature and can be used for long time.

The invention relates to the technical field of paint, and concretely discloses anti-doodle anti-contamination bottom-universal aqueous woodenware white paint and a preparation method thereof. The aqueous woodenware white paint comprises the following components by mass percentage: 40-50% of an aqueous acrylic acid emulsion, 8-12% of an aqueous polyurethane dispersion, 0.3-0.5% of a base materialwetting agent, 0.4-0.6% of an antifoaming agent, 13-18% of deionized water, 1-3% of an environmental protection solvent, 3-5% of a wax emulsion, 1-2% of a thickening agent, 0.3-0.5% of a levelling agent, 0.5-0.8% of an anti-doodling auxiliary agent, 0.5-1% of an organosilicon surface auxiliary agent, 0.5-1% of a dispersant, and 18-20% of titanium dioxide. The aqueous woodenware white paint has high hardness, and excellent contamination resistance and doodle resistance, and a paint film has the advantages of fast drying speed, high glossiness, excellent chemical resistance, and artificial agingresistance.

A technology for manufacturing the K-contained tungsten strips by powder metallurgy includes such steps as preparing K doped tungsten powder, reducing one or two times, acid washing, die pressing, pre-sintering, vertical smelting and indirect sintering. Its advantages are high strength, purity and rate of qualified products, and high uniformity of crystal grains and K element.

The invention discloses a general modified epoxy antirust paint with high performances and high solids and a preparation method thereof. The paint comprises a component A and a component B, wherein the component A comprises 10-20 parts of an E44 epoxy resin, 10-20 parts of an NPPN-631 epoxy resin, 5-15 parts of a terpene resin, 4-18 parts of a cumarone resin, 0.1-1.0 parts of a BYK antifoaming agent, 0.1-1.0 part of an HX leveling agent, 0.1-1.5 parts of a rheological assistant, 5-20 parts of active silica, 10-20 parts of a mixed solvent and 10-30 parts of a pigment-filler; and the component B comprises 10-40 parts of cardanol modified amine and 0.5-3 parts of a modified silane coupling agent. The antirust paint of the invention has the advantages of compact coating, low viscosity, good compatibility and fast curing of a curing agent, high tough strength and strong adhesion of the coating, coating number reduction during the thick slurry curing, construction efficiency improvement, construction cost reduction, and anticorrosion life prolongation.

The invention discloses an automobile wear-resistant paint and a preparation method thereof. The preparation method comprises the following steps: adding 100 parts by weight of PVC and 115 to 125 parts by weight of plasticizer into a reactor, evenly mixing; adding 1 to 6 parts by weight of silane coupling agent and 0.001 to 0.01 part of azodiisobutyronitrile into the reactor, increasing the stirring speed to evenly stir the mixture; adding 0.3 to 0.8 part by weight of organic fluorine surfactant and 2 to 8 parts of tackifier into the reactor, fully stirring until the added materials are evenly mixed; adding 250 to 300 parts of inorganic powder, increasing the stirring speed; and vacuumizing to remove the gas after the inorganic powder is evenly dispersed so as to obtain the automobile wear-resistant paint. The automobile wear-resistant paint has the excellent flame retardant performance, anticorrosion performance, and electric insulation performance, and high mechanical strength of polyvinyl chloride resin paint, and also has a very good anti-dropping and anti-sagging performance at the same time.

The present invention provides a water-based coating and/or coating system that can be used to form sag resistant wet layers or coatings on a wide range of substrates. The coating system is particularly effective for protecting metal-containing substrates, such as intermodal cargo containers, against corrosion. As an overview, the present invention provides water-based compositions suitable to form primer coats on substrates. Desirably, the primer incorporates a high level of one or more CAS agents for excellent sag resistance while drying in a broad range of relative humidity environments. Alternatively, modifications can be made to control temperature and humidity during spray application and drying as a way to increase sag resistance of the coating.

The invention discloses a low-viscosity solvent-free epoxy graphene glass-flake coating and a preparation method thereof, and aims to solve the problems that the conventional solvent-free epoxy graphene glass-flake coating has a high requirement on a construction thickness, is not ideal in corrosion resistance, needs to apply heating spraying and has a large number of coating working procedures. The coating consists of two components specifically as follows: the component I is prepared from the following raw materials in percentage by mass: 37 to 40 percent of epoxy resin E51, 2 to 4 percent of an active diluents NC513, 0.2 to 0.6 percent of a dispersing agent BYK-9077, 15 to 23 percent of functional resin 312, 14 to 15 percent of titanium dioxide R2196, 20 to 25 percent of glass flakes, 0.2 to 0.3 percent of graphene, 0.2 to 0.5 percent of a rheological agent BYK-410, 0.2 to 0.4 percent of a leveling agent F40 and 0.2 to 0.6 percent of a defoaming agent 6800; the component II is prepared from the following raw materials in percentage by mass: 75 to 94 percent of a curing agent CK-5106, 5.6 to 24.2 percent of a curing agent D0590, 0.2 to 1.5 percent of graphene and 0.2 to 1.0 percent of the dispersing agent BYK-9077. The coating can be directly used for coating by a conventional construction process without being heated, and the construction is rapid, simple and convenient.

The invention discloses air-drying automobile-used water-based finishing coat and water-based intermediate coat, as well as preparation method and use methods thereof. The air-drying automobile-used water-based finishing coat and water-based intermediate coat mainly comprise water-based castor oil modified alkyd resin, water-based acrylic resin, a silicon modified dual-crosslinking water-based polyurethane curing agent, and other additives. The preparation methods comprise the following steps: preparing main coat with castor oil modified alkyd resin, water-based acrylic resin and the additives; providing curing agents and water. The use methods comprise the steps of mixing main coat, the curing agents and water in a weight proportion. The air-drying automobile-used water-based finishing coat and water-based intermediate coat can be dried directly in a natural environment, and have the advantages that defects of curtaining, flower formation, drifting and the like are avoided in spraying on a large-area vertical surface; the rigidity, fullness and weatherability are high.

A mixture composition of a cellulose ether made from raw cotton linters and at least one additive is used in a cement extrusion mortar composition wherein the amount of the cellulose ether in the cement extrusion mortar composition is significantly reduced. When this cement extrusion mortar composition is mixed with a sufficient amount of water and extruded to form an object with comparable or lower crack formation, the plastification and/or extrusion properties of the resulting wet mortar are improved or comparable as compared to when using conventional similar cellulose ethers.

The present invention provides an emulsion composition for a vibration damper, which has heating and drying properties high enough to form an excellent coating film which can exhibit excellent damping without swelling during drying by heating, and an emulsion composition for a vibration damper, which can exhibit basic performances demanded in vibration dampers, in particular, markedly superior anti-sagging even under the condition of high humidity or a thick film where the coating film may sag in conventional technologies, and thus can be useful in vibration dampers of various structures. The emulsion composition for a vibration damper includes an emulsion obtainable by emulsion polymerization of monomer components, the emulsion composition containing 0.5 to 20% by mass of a film-forming agent with a weight average molecular weight of 100 to 20000 in 100% by mass of the emulsion composition.

The invention provides an anti-sinking PU extra-clear primer which is prepared by mixing an anti-sinking PU polyurethane primer, a PU anti-sinking curing agent and a PU anti-sinking diluent, wherein the anti-sinking PU polyurethane primer is prepared from soybean oil alkyd resin, a dispersant, an antifoaming agent, anti-settling slurry, pigment and filler, nitrocotton liquid, a leveling agent, a dryer and the like in addition with an environment-friendly solvent; the PU anti-sinking curing agent is prepared from n-butyl acetate, isocyanate tripolymer and isocyanate heteropolymer; and the PU anti-sinking diluent is prepared from the solvents such as n-butyl acetate, propylene glycol monomethyl ether acetate, dimethyl carbonate and the like. The anti-sinking PU polyurethane primer, the PU anti-sinking curing agent and the PU anti-sinking diluent are sufficiently and uniformly mixed to prepare the anti-sinking PU extra-clear primer which has excellent anti-sinking property and extra high transparency and is easy to polish; and the shortcomings of slow drying, poor anti-sinking property, common adhesion, low transparency, common polishing property and the like of the commercially available products are overcome.

The invention relates to latent-curing conductive paste and a method of forming an electrode on a substrate thereby. The latent-curing conductive paste comprises low-melting-point thermoplastic polymer, conductive particle, glass powder, curing reaction agent, curing catalyst and auxiliaries. The low-melting-point thermoplastic polymer is solid or jelly at room temperature, melts into liquid at 35-85 DEG C, and starts curing reaction with the curing reaction agent under the action of the curing catalyst in the temperature range of from 85 DEG C to 160 DEG C. To form the electrode on the substrate by the latent-curing conductive paste, post-printing low-temperature curing is needed. Compared with the prior art, the latent-curing conductive paste is well resistant to medium temperature after printing and curing, so that environmental temperature sensitivity of the conventional hot-melt conductive paste after printing is effectively overcome and printed pattern can be well kept. The latent-curing conductive paste is especially suitable for solar cells.