948 results about "Firming agent" patented technology

This invention discloses a bio-based flame-retardant thermally expanding powder coating and its preparation method, relating to the field of coatings. It comprises the following components: bio-based epoxy resin, phenolic epoxy curing agent, ammonium polyphosphate, nano-titanium dioxide, zinc borate, expanded graphene, 8-12 parts of imidazole, benzoin, and a leveling agent. The bio-based epoxy resin is prepared by ring-opening copolymerization of cashew phenol glycidyl ether and linoleic acid prepolymer, followed by epoxy end-capping, with an epoxy equivalent of 900-1200 g / eq; the phenolic epoxy curing agent has an epoxy equivalent of 200-250 g / eq; and the expanded graphene has an initial expansion ratio of 200-300 times. The preparation method employs a two-step, staged mixing process. This invention, while maintaining zero VOC in powder coatings and the same film thickness, achieves for the first time the outstanding performance of 6H hardness, UL94V-0 flame retardancy, and 120 times expansion ratio through the systematic synergy of high epoxy equivalent bio-based resin, four-component complete flame retardant system, specific EG:APP ratio, and two-step process.

A two-part epoxy formulation that is both water-based and bio-based, exhibiting surprising durability comparable to or exceeding conventional petroleum-based epoxies. The coating composition contains: (A) a water-based epoxy resin; (B) a bio-based hardener; and (C) one or more additives.

This invention discloses a weather-resistant, high-hardness composite anti-corrosion coating and its preparation method, belonging to the field of anti-corrosion coating technology. The preparation method includes: firstly, synthesizing an epoxy resin containing dynamic disulfide bonds by reacting dithiodibenzoic acid and epichlorohydrin in an alkaline aqueous phase; secondly, constructing a low surface energy siloxane network using hydroxyl-terminated polydimethylsiloxane and methyltriethoxysilane; subsequently, introducing chlorzoxazone and N-acetyl-p-aminophenol as composite organic corrosion inhibitors, blending them with the resin to obtain a composite base material; finally, adding graphene, carbon nanotubes, and inorganic anti-corrosion fillers, and cross-linking and curing to form a film using a polyamine curing agent. This invention suppresses microcracks through the dynamic stress relief of disulfide bonds, combined with the weather-resistant barrier of the siloxane network, the active interface passivation of the heteroatom corrosion inhibitor, and the three-dimensional synergistic mechanical bonding of carbon-based nanomaterials, achieving a perfect unity of ultra-strong corrosion resistance, excellent weather resistance, and high mechanical hardness in the coating.

This utility model relates to the field of building auxiliary materials, and in particular to an anchor bolt for fixing the thermal insulation layer of existing building exterior walls. It includes an anchor plate, an anchor bolt sleeve, a mixing body, an auxiliary nail core, and a sleeve head. The anchor bolt sleeve is provided with multiple barbs. The sleeve head includes a solvent chamber and a spraying part coaxially connected. The solvent chamber contains two cavities separated by multiple PVE elastic films, each containing an epoxy resin base and an epoxy resin curing agent. The auxiliary nail core drives the mixing body to rotate, ensuring thorough mixing of the epoxy resin base and curing agent. The mixed epoxy resin flows out through the spraying part, filling the gap between the anchor bolt and the wall. After the epoxy resin cures, the anchor bolt and the wall become integrated, achieving the effect of fixing the thermal insulation board.

A paving material composition containing: an epoxy resin; an epoxy resin curing agent containing a reaction composition (A) containing a reaction product of styrene and a polyamine compound represented by the following formula (1); and an aggregate.wherein X is a phenylene group.

This invention discloses a wear-resistant coating for Peak rackets, comprising the following main components by weight: 40-60 parts epoxy resin, 2-4 parts curing agent, 1-3 parts accelerator, 10-20 parts anti-wear additive, and 30-50 parts mixed powder. By selecting a composite of metal powder and silicon carbide powder as fillers and adding them to the resin system, the coating formed on the surface of the Peak racket creates microscopic protrusions, increasing the coefficient of friction. This significantly increases the controllability of the ball during impact. Furthermore, the silicon carbide forms a sufficiently hard and wear-resistant skeleton within the resin, resisting external friction and preventing performance degradation. Simultaneously, the metal powder distributed between the silicon carbide powders, with their different particle shapes, alleviates stress concentration caused by the hard silicon carbide. When the coating is impacted, the metal powder absorbs some deformation energy, providing cushioning for the racket and further increasing the controllability of the ball during impact.

This invention discloses a heterojunction low-temperature curing silver paste suitable for space HJT battery applications, its preparation, and its application. The heterojunction low-temperature curing silver paste comprises the following components in parts by weight: 75-92 parts of a first conductive powder, 0.5-5 parts of a second conductive powder, 2.25-9.5 parts of a composite resin system, 0.5-4.8 parts of a blocked isocyanate curing agent, 0.05-0.5 parts of a latent accelerator, 0.2-1.8 parts of a coupling agent, 0.3-1.5 parts of a dispersant, and 1.5-6.4 parts of a solvent; the composite resin system comprises epoxy resin and cyanate ester resin, with a mass ratio of epoxy resin to cyanate ester resin of (2-8):1. The silver paste of this invention can form a dense cross-linked network after curing at 150-250℃, while meeting the low outgassing requirements of materials for spacecraft. It can withstand extreme temperature difference cycles from -196℃ to +150℃ and high-energy particle irradiation environments in space, and is suitable for the preparation of metallized electrodes for HJT solar cells in low Earth orbit and medium-high Earth orbit.

The present application relates to the technical field of pipeline drainage, and particularly relates to a composite hydrophobic material for inhibiting crystallization of a tunnel drainage pipeline and a preparation method thereof; the composite hydrophobic material comprises a hydrophobic inner layer and a scale inhibition outer layer attached to the outer surface of the hydrophobic inner layer; the hydrophobic inner layer comprises tetrahydrofuran, a solvent volatilizing agent, a surfactant, nano-silicon dioxide, a cross-linking agent and a curing agent; the scale inhibition outer layer comprises a scale inhibitor solution and a gum material, wherein the scale inhibitor solution comprises EDTA, hydrolyzed maleic anhydride and sulfamic acid; the preparation method comprises the following steps: S1, coating the hydrophobic inner layer material; S2, air-drying to obtain the hydrophobic inner layer; S3, coating the scale inhibition outer layer material on the surface of the hydrophobic inner layer to obtain the composite material; the composite material prepared by the present application still has excellent hydrophobic performance after being left for 24 hours and can be maintained for a long time; the scale inhibition outer layer protects the hydrophobic inner layer and simultaneously plays a scale inhibition role, thereby improving the functionality of the material.

This application discloses a slurry for a flexible pressure sensor, its preparation method, and the sensor and its preparation method. The preparation method of the flexible pressure sensor slurry includes the following steps: In a first solvent, a conductive filler is ultrasonically dispersed. The conductive filler includes: (1) graphene oxide, or (2) the graphene oxide and multi-walled carbon nanotubes, wherein the mass ratio of the multi-walled carbon nanotubes to the graphene oxide is (0-3):(1-2). After the reaction, under ultrasonic oscillation, the remaining amine substances are removed using anhydrous ethanol, centrifuged, and pressure-sensitive powder is prepared. A binder, a curing agent, and the pressure-sensitive powder are mixed and ultrasonically dispersed in a second solvent to obtain a uniform slurry. The first solvent is ethylenediamine, hexamethylenediamine, or decanediamine. This application makes technical improvements to the slurry preparation and integration scheme for flexible pressure sensors based on carbon nanotubes.

The present application relates to the technical field of energy storage equipment protection, and particularly relates to a phase change protective coating for an energy storage container and a preparation method thereof, which comprises, by total mass 100 parts, epoxy modified polyurethane 40-50 parts, lauric acid 10-15 parts, paraffin 5-8 parts, GPTMS modified boron nitride 3-6 parts, VTES modified nano-silicon dioxide 2-5 parts, leveling agent 0.5-0.7 parts, defoaming agent 0.3-0.5 parts, curing agent 7-9 parts, and diluent 10.8-17 parts; the GPTMS modified boron nitride is obtained by modifying 50 nm boron nitride with GPTMS and has a modification degree of 85%, and the VTES modified nano-silicon dioxide is obtained by modifying 30 nm nano-silicon dioxide with VTES and has a modification degree of 80%. The present application uses specific composite phase change materials and cooperates with a pretreatment process, so that the phase change components are uniformly dispersed, the problems of leakage and agglomeration are avoided, the stable phase change function of the coating is ensured, the environmental temperature fluctuation can be effectively smoothed, and stable operating temperature conditions are provided for the energy storage equipment.

This invention relates to the field of coating technology, specifically to a protective coating for stone surfaces with good waterproof performance and its preparation method, comprising the following steps: S1. Treating microcrystalline cellulose to obtain product 1 for later use; S2. Reacting product 1 from step S1 with titanium tetrachloride to obtain nano-titanium dioxide for later use; S3. Mixing the nano-titanium dioxide from step S2 with sodium oleate and adjusting the pH to 6.5-7.5 to obtain product 2 for later use; S4. Performing surface synergistic hydrophobic modification treatment on product 2 to obtain functional filler. This invention discloses a protective coating for stone surfaces with good waterproof performance, using fluorinated acrylic resin as the base resin, incorporating functional filler, and combining it with a curing agent, mixed solvent, defoamer, and leveling agent. Through the synergistic effect between the components, this protective coating for stone surfaces possesses good waterproof performance as well as good resistance to ultraviolet aging and acid corrosion.

This invention relates to a waterproof coating for walls and its preparation method, belonging to the field of coating technology. The waterproof coating of this invention is prepared from the following components: 50-53 parts by weight of epoxy resin, 75-81 parts by weight of curing agent, and 8.5-11.5 parts by weight of waterproof filler. The waterproof filler is prepared by the following steps: reaction of epoxidized nano-silica with the nucleophilic reagent p-aminophenyl POSS, ring-opening and polymerization of N-acid anhydride, and modification with ethyl isocyanate. This invention uses epoxy resin as the film-forming substance and constructs a waterproof system by adding waterproof filler to prepare a waterproof coating suitable for application on walls. It can achieve a relatively ideal waterproof effect without the need for additives, effectively blocking the intrusion of water, and the coating has a low water absorption rate.

This invention discloses a BMC material for preparing food contact products and its preparation method. The material comprises the following components by mass percentage: 12%–20% food contact grade styrene-based unsaturated polyester resin (compliant with GB 4806.7-2016); 3%–10% solvent-free PMMA powder; 0.5%–1% zinc stearate; 0.2%–0.6% curing agent TBIC; 0.01%–0.1% polymerization inhibitor TBHQ; 0.01%–0.05% stabilizer BHT; 20%–45% calcium carbonate; 10%–40% aluminum hydroxide; and 5%–10% glass fiber. This invention, by using low-cost food contact grade styrene-based resin combined with solvent-free PMMA powder and optimizing the ratio of TBIC to TBHQ, achieves near-zero styrene monomer residue in the product while reducing costs. This effectively solves the problems of high cost, difficulty in processability adjustment, and monomer residue risk associated with traditional food contact grade BMC materials. The cost of the resulting material can be controlled below 7 yuan / kg, and it has both flame-retardant and high-strength properties, making it a widely viable alternative to traditional food contact grade plastics.

Use of an epoxy resin-based binder system as a thermoplastic material for surface layers, namely for coating drivable asphalt surfaces, characterized in that the binder system is made from a mixture of 40 wt.% - 60 wt.% of a resin component A, 15 wt.% - 40 wt.% of a hardener component B and 15 wt.% to 35 wt.% of a vegetable oil according to a component C, which replaces proportions of the resin component A in the mixture.

This invention discloses a floor repair agent and its preparation method, belonging to the field of building materials technology. The repair agent comprises a modified resin component, a curing agent component, a modified composite functional filler, and composite additives. The modified resin is a composite system of silane coupling agent-modified epoxy resin and terminally hydroxylated polyurethane. The modified composite filler consists of modified nano-silica, passivated quartz sand, and hydroxylated recycled polyurethane rigid foam powder. The composite additives include a compound toughening agent and composite modified polypropylene fibers. During preparation, each component undergoes targeted modification pretreatment, followed by temperature-controlled stirring and step-by-step mixing to obtain the finished product. This invention solves the problems of poor resin compatibility, weak filler bonding force, and easy cracking and debonding in existing repair agents. The product has high bonding strength, low shrinkage, wear resistance, and impact resistance. It can be used stably in environments ranging from -30℃ to 80℃, is environmentally friendly and odorless, and is easy to apply. It combines performance and cost advantages, and is suitable for long-term repair of various floor types and heavy-duty, high- and low-temperature conditions.

This invention discloses the application of a self-healing epoxy-acrylate interpenetrating polymer network anti-corrosion coating in a seawater environment, belonging to the technical field of marine anti-corrosion coating materials. The self-healing epoxy-acrylate interpenetrating polymer network anti-corrosion coating includes a coating matrix and hydrophobic self-healing microcapsules uniformly dispersed within the coating matrix. The coating matrix is ​​formed by interpenetrating polymerization of epoxy resin, acrylate, and a curing agent. The hydrophobic self-healing microcapsules have a core-shell structure, including a core and a wall. The core is an oil-based healing agent, and the wall is a hydrophobic polymer material. This invention achieves cross-linking polymerization and curing through the interaction of the oil-based healing agent with dissolved oxygen in the water, without relying on an additional curing agent, greatly reducing the interference of the seawater environment on the curing reaction. The synergistic system of the hydrophobic self-healing microcapsules and the coating matrix constructed in this invention achieves the integration of in-situ self-healing and long-term anti-corrosion in underwater environments.

This invention belongs to the field of curing agent technology, specifically relating to a composite curing agent, its preparation method, and its application. The composite curing agent comprises the following raw materials in parts by weight: 40-50 parts crushed stone, 20-30 parts cement, 5-10 parts quicklime, 4-10 parts activator, 3-8 parts modified bentonite, and 0.3-0.5 parts crack-resistant agent. The preparation process of the modified bentonite is as follows: (1) Pretreated bentonite is added to an ethanol aqueous solution, then KH570 is added, and the mixture is stirred under heating conditions to obtain pre-modified bentonite; (2) The pre-modified bentonite is added to N,N-dimethylformamide, then diallyl malate and an initiator are added, and the mixture is heated to obtain the modified bentonite. This composite curing agent can significantly improve the mechanical properties and crack resistance of the cured soil.

The application provides a pre-cut layer for semiconductor silicon ingot slurry multi-wire cutting, a preparation method and application thereof. The pre-cut layer is an epoxy resin-based composite material, and comprises the following components in percentage by mass: 30-40% of an epoxy resin matrix, 3-7% of a toughening agent, 12-16% of a curing agent, 0.5-1.5% of an accelerator, and 40-50% of inorganic hard fillers. The pre-cut layer is pasted on the entry port end face of the semiconductor silicon ingot to be cut, and the pre-cut layer and the semiconductor silicon ingot are cut by using a slurry multi-wire cutting process. In the pre-cut layer stage, low-speed slow feeding is adopted to realize rough grinding of the slurry and in-situ slow release of fine SiC, so that the slurry particle size is quickly stabilized. After entering the silicon ingot cutting stage, high-speed fast feeding is switched to ensure the cutting efficiency. The slurry cutting force is uniform and stable throughout the process, the taper problem of thin entry port and thick exit port is eliminated from the root, and the silicon wafer cutting quality and yield are significantly improved.

This invention discloses a water-based epoxy resin coating for 6005 aluminum alloy that prevents sagging and cracking, and its preparation method. The coating is a two-component system. Component A contains water-based epoxy resin emulsion, CTBN-modified toughening resin, composite anti-rust pigments, flake-shaped shielding fillers, and compounded thixotropic rheology agents, etc. Component B is a water-based amine curing agent. This coating can solve the sagging and cracking problems of existing coatings on 6005 aluminum alloy, achieving a coating adhesion grade of 0, a neutral salt spray test of ≥900h, and VOC ≤42g / L. It meets the stringent protection requirements of 6005 aluminum alloy and has excellent prospects for industrial application.

The invention relates to the technical field of composite materials, in particular to a synergistic flame-retardant epoxy resin-based porous sound insulation composite material and application thereof. The raw materials comprise 100 parts of bisphenol A epoxy resin, 15 parts of an aliphatic amine curing agent, 12 parts of ammonium dihydrogen phosphate, 6 parts of melamine, 4 parts of nano silicon dioxide, 5 parts of sodium chloride, 2 parts of ammonium bicarbonate, 0.8 part of carbon nanotubes and 0.5 part of a silane coupling agent. The synergistic flame-retardant epoxy resin-based porous sound-insulation composite material provided by the invention effectively solves the technical bottleneck that the flame-retardant, sound-insulation and mechanical properties of an epoxy resin-based material in the prior art are difficult to synergistically improve, and has remarkable beneficial effects in multiple aspects.

This invention provides a weather-resistant metal protective coating and its preparation method. The weather-resistant metal protective coating comprises a modified epoxy resin, modified carbon nanotubes, a curing agent, an initiator, and a diluent. The modified epoxy resin is prepared by reacting epoxy resin sequentially with methyldodecyl dichlorosilane and hydroxyethyl methacrylate ethyl phosphate. The modified carbon nanotubes are prepared by reacting carboxylated carbon nanotubes with 3-(methacryloyloxy)propyltrimethoxysilane. The weather-resistant metal protective coating prepared by this invention exhibits excellent anti-corrosion, anti-aging, and mechanical properties.

The utility model provides a kind of hazardous waste solidification device, belong to hazardous waste processing technical field;Hazardous waste solidification device includes: mounting plate, support frame, mixing tank, feed pipe, first feed hole, stirring paddle, second feed hole, pivot and helical blade;By installing multiple stirring paddles on the outer wall of feed pipe, the opening of stirring paddle is communicated with first feed hole, and multiple second feed holes are arranged on the outer wall of stirring paddle, to realize that solidifying agent poured into feed pipe can flow into multiple stirring paddles, so as to realize when feed pipe drives stirring paddle to rotate, solidifying agent flowed into stirring paddle can flow out through second feed hole due to centrifugal force, and then make solidifying agent and hazardous waste in each place of mixing tank fully mix, compared with solidifying agent is concentrated and poured into a place, the mixing effect of solidifying agent and hazardous waste is better, to improve the solidification effect of hazardous waste.

The present application relates to a kind of diamond polishing pad and its preparation method, belong to the technical field of polishing pad.A kind of diamond polishing pad is by grinding base and the grinding layer of being arranged in the surface of grinding base, the grinding layer is by several hexagonal projections, the hexagonal projection is made of grinding material, the grinding material includes the following components: epoxy modified acrylate, polyurethane, modified filler, diamond micro powder, curing agent, silane coupling agent and dispersing agent.The grinding material prepared by the present application strengthens the mechanical properties of matrix by modified filler, gives cutting ability by diamond micro powder, cooperatively improves the hardness, wear resistance and interface bonding stability of polishing pad, guarantees the precision, efficiency of polishing process and the long service life of polishing pad.

The present application provides a kind of resin composition and covering film, the resin composition includes the following weight parts of component: epoxy resin 35-45 parts, carboxyl-terminated butyl nitrile rubber 18-28 parts, copolyamide resin 5-7 parts, polyvinyl butyral resin 2-4 parts, amine curing agent 2.8-4.2 parts.In the epoxy resin system in the present application, copolyamide resin, polyvinyl butyral resin and carboxyl-terminated butyl nitrile rubber are combined to improve the toughening and blocking performance together, solve the problem of covering film overflow, overflow edge is neat when pressing, there is no small molecule overflow, and the heat resistance, adhesion of resin composition can be considered.

The present application relates to the technical field of buoyancy material, and particularly relates to a low-density hydrophobic buoyancy material and a preparation method thereof. The low-density hydrophobic buoyancy material comprises the following components in parts by weight: 50-60 parts of epoxy resin, 35-45 parts of polyurethane modified graphene oxide-hollow glass microsphere composite material, 15-25 parts of polyaniline, 8-12 parts of short carbon fiber, 4-8 parts of diluent and 1-3 parts of curing agent. The low-density hydrophobic buoyancy material has the characteristics of low density and water absorption, excellent bulk modulus and compression strength, and good weather resistance. The preparation method of the low-density hydrophobic buoyancy material is simple in process and easy to control in operation, is conducive to industrialized mass production, and the prepared low-density hydrophobic buoyancy material is stable in quality and superior in comprehensive performance.