157results about How to "Fast curing time" patented technology

A radiation curable coating composition is provided and includes an effective amount of cationic photoinitiator, in combination with a charge transfer complex, the charge transfer complex comprising at least one electron withdrawing reactant component and at least one electron donating reactant component free radically reactive therewith, the electron withdrawing reactant component comprising an unsaturated nitrogen containing compound and the electron donating reactant component comprising an unsaturated compound having at least one vinyl ether group, the electron donating reactant component may be separate from or structurally incorporated within the electron withdrawing reactant component and an effective amount of a cationic photoinitiator. A photopolymerization process employing the composition is also provided.

A 2K epoxy adhesive is provided that has rapid cure time and good strength characteristics. Both the epoxy resin composition and the hardener composition of the 2K epoxy comprise a reactive toughener. Such adhesives are useful in the manufacture and / or repair of large machinery (e.g., automobiles), and are useful for bonding like or unlike materials, such as metal and composites (e.g., carbon fiber or glass fiber composites).

An intumescent composition which comprises a polymer selected from a silane-terminated polyurethane or a silane-terminated polyether, a plasticizer that is compatible with the polymer and an intumescent ingredient. Processes of forming a cured intumescent substance, and methods of fire protecting a building are also provided.

A method for forming a body comprising a mixture of a matrix and conductive particles, whereby the conductive particles are formed into aligned conductive pathways in an alignment step by applying an electric field between alignment electrodes and thereafter stabilizing the mixture wherein the conductive particles have a low aspect ratio; and a polymeric composition and method for producing such composition which is curable by UV light to an anisotropic electrically conductive polymer layer, comprising i) providing a non-conductive matrix of a flowable polymer composition having inherent photocurability, ii) adding to matrix conductive particles having low aspect ratio in an amount to allow the concentration of the conductive particles to be maintained at a level lower than the percolation threshold, and iii) placing the formed composition in a receptacle where exposure to UV light is prevented, and a method for establishing an anisotropic electrically conductive, optionally thermally conductive

Epoxy composites are prepared by separately preheating an epoxy resin and a hardener; mixing the preheated epoxy resin and preheated hardener to form a hot reaction mixture and curing the hot reaction mixture in the presence of a reinforcement until the mixture cures to form a composite having a polymer phase with a glass transition temperature of at least 150° C.

The invention discloses a method for preparing silicone sealant. The method comprises the following steps: adding alpha,omega-dyhydroxy polydimethylsiloxane, filler and dimethyl silicon oil into a vacuum kneading machine, vacuuming, heating and mixing for 2-5 hours; stopping heating, introducing nitrogen to change the vacuum state, adding a silane coupling agent, mixing for 0.5-1 hour at the vacuum degree of -0.06 to -0.1Mpa, introducing nitrogen to change the vacuum state; sealing and cooling to room temperature, subsequently transferring into a stirring machine, adding a cross-linking agent, a thickening agent and a catalyst, vacuuming, and uniformly stirring and mixing so as to obtain the silicone sealant. According to a product of the silicone sealant, the addition amount of the filler is increased, the product stability and the surface smoothness are improved, the thixotropy and the deep curing are also improved, the curing homogeneity is good, the tensile strength, the elasticity and the cohesiveness are greatly improved, expensive white carbon black can be replaced, the filling amount is large, the curing time is short, the construction efficiency is improved, the process is simple and feasible, the production cost is low, and good economic benefits and social benefits are achieved.

A photocurable ink contains a colorant dissolved or dispersed within a solvent, a photoinitiator, an organic phosphite, and a photocurable compound. This photocurable ink can be used for imaging or other applications where a uniform or patterned image is desired. The photocurable ink can be cured partially before application, or totally cured after application.

Select metal salts of mono and di aromatic sulfonic acids and aliphatic sulfonic acids are effective latent acid catalysts in coating compositions capable of acid catalyzed crosslinking and provide coating compositions with lower cure temperature and quicker cure times than encountered with conventional sulfonic acid catalysts, have excellent storage stability and avoid drawbacks of epoxy and amine blocked sulfonic acid catalysts.

A layer of the mixture that contains polymer and conductive particles is applied over a first surface, when the mixture has a first viscosity that allows the conductive particles to rearrange within the layer. An electric field is applied over the layer, so that a number of the conductive particles are aligned with the field and thereafter the viscosity of the layer is changed to a second, higher viscosity, in order to mechanically stabilise the layer. This leads to a stable layer with enhanced and anisotropic conductivity.

A thermally curable coating is spin applied to the surface of a lens through a process that comprises the following steps: preparing a thermally curable coating composition, spin applying the coating onto one surface of a lens, and curing the coating. The process combines the best features both of the spin application technique and a thermally cured coating to obtain high productivity with high yield in the application process yet provide superior coating properties without requiring stripping or other pretreatment steps, which have negative attributes. The process can also incorporate the use of either a thermoset or a thermoplastic primer to enhance the coating adhesion.

Ethylsilicate polymers and a method of making, specifically ethylsilicate polymer binders with reduced levels of regulated volatile organic compounds (VOCs) for use in the coatings industry and casting industry, and more specifically to stable, fast cure ethylsilicate polymer binders with low levels of regulated VOCs.

The invention provides a preparation method of a polyurethane elastomer, relating to polymers. The invention provides a preparation method of a polyurethane elastomer which has excellent impact resistance and machining characteristic and is especially suitable for preparing transparent polyurethane glasses frame products with high yields and low defects. The preparation method comprises the following steps: 1) preparing a prepolymer: mixing isocyanate with polyols to react to obtain the prepolymer; 2) preparing a curing agent: specifically, dehydrating the polyols, catalysts and anti-aging agents until the mass percent of the moisture is smaller than 0.05%, and adding chain extenders after reducing the temperature, thus obtaining the curing agent; and 3) mixing the prepolymer with the curing agent, then carrying out vacuum defoaming, injecting a reactive mixture after vacuum defoaming into a mold, then putting the mold in a microwave environment to be heated, and carrying out demolding, thus obtaining the polyurethane elastomer. The preparation method has the advantages of good processing properties, low material operating temperature, controllable operating time, high production efficiency and high yield.

A system for dispensing a curable composition includes a dual barrel syringe including a first syringe barrel with a first plunger, and a second syringe barrel with a second plunger. A static mixer is connected with distal ends of the first and second syringe barrels. The first and second plungers are moveable toward the distal ends of the first and second syringe barrels for expelling first and second components of a curable composition from the distal ends of the barrels into the static mixer for mixing the components to form the curable composition. A flexible spreader connected with a distal end of the static mixer has a flat dispensing opening, and a plurality of channels extending to the flat dispensing opening to dispense the curable composition. A hot gas blower generates a hot gas stream flowing distally over the distal end of the flexible spreader for curing the curable composition.

The photocuring efficiency of a photoinitiator is increased by mixing it with an organic phosphite and an aldehyde. This mixture or photoinitiator composition can be used to cure acrylates or other photocurable compounds, particularly in an oxygen-containing environment.

A process for grouting floors using a two-part reactive epoxy grout formulation comprising two distinct components (parts) which can utilize a two-part cartridge for storing, metering and having a means of attaching a static mixer tube to the front of the cartridge for inline mixing of the epoxy components as they are being dispensed directly into the grout joint. The cartridge contains a resin and pre-colored hardener, which maybe heated to accelerate the cure speed in cold environments if necessary, mixed, and applied to an empty grout joint-line by means of a static mixer tube that acts as a mixer-nozzle. Masking tape or other protective material is placed on both sides of the joint-line prior to grouting to prevent epoxy contacting tile faces. The grout is dispensed directly into the grout joint by the applicator gun pressurizing the cartridge pistons to flow epoxy resin and hardener in the correct mix ratio through the static mixing nozzle. A leveling tool is used to even out the dispensed grout into the grout joint and remove excess material before curing. By means of the reactivity of the hardener and resin, which are mixed in the proper stoichiometric ratios, the epoxy will cure in the designed period of time to allow full use within hours after application. A two-part methyl methacrylate grout formulation can be used in grouting new tiled floors or regrouting existing tiled floors with the same procedures as the two part reactive epoxy grout.

Method of bonding a shear web (50) to a wind turbine blade shell (75) and the obtained blade, wherein the shear web (50) comprises a web and a mounting flange (56) oriented transverse to the web (50). The method involves: providing a seal (66, 68) on the mounting flange (56) of the shear web (50) such that when the mounting flange (56) is positioned against the blade shell (75), a cavity (76) is defined by the seal between the mounting flange (56) and the blade shell (75). The air of the cavity (76) is then evacuated and adhesive is injected into the cavity (76). The use of pieces (80) to keep the distance between the mounting flange (56) and the blade shell (75) is preferred.

A 2K epoxy adhesive is provided that has rapid cure time and good strength characteristics. Both the epoxy resin composition and the hardener composition of the 2K epoxy comprise a reactive toughener. Such adhesives are useful in the manufacture and / or repair of large machinery (e.g., automobiles), and are useful for bonding like or unlike materials, such as metal and composites (e.g., carbon fiber or glass fiber composites).

The invention provides a combined foaming agent. The combined foaming agent comprises, by mass, 1-9 parts of cyclopentane, 1-5 parts of isopentane and 2-30 parts of HFC-245fa. The hard polyurethane foam prepared by adopting the combined foaming agent comprises, by mass, 100 parts of combined polyether, 10-26 parts of the combined foaming agent and 120-150 parts of isocyanate. The invention also provides a manufacturing method of the hard polyurethane foam. The above foaming technology effectively reduces the heat conduction coefficient of the polyurethane foam, and reduces the energy consumption of a freezer; the strength of the foam with same density is enhanced, and the density of the foam required by the freezer is reduced, so the injection amount of the whole freezer is reduced, the raw material waste is reduced when the demand of the freezer is a certain amount, production of the hard polyurethane foam difficult to treat is reduced, and pollution to environment is reduced; and the solidification time of the foam is shortened by 10-15%, and the production efficiency is improved.

The invention discloses a preparation method of a one-component oxime transparent silicone adhesive. According to the preparation method, white oil is divided into two parts for feeding. One part of the white oil firstly reacts with alpha, omega-dihydroxy polydimethylsiloxane. Thus, viscosity of base rubber can be appropriately reduced; severe wearing of equipment can be avoided; the resistance of the product will not be greatly reduced after the addition of gas-phase silica; and the gas phase silica powder can be dispersed uniformly. The other part is added after the reaction so as to make the product appearance more uniform, smoother and more exquisite. In the meanwhile, the curing time of the product is obviously accelerated, thus substantially minimizing construction time and raising construction efficiency.

A process of producing a coloured hologram is provided. The process comprises preparing a lacquer composition comprising a UV / EB-hardening acrylic resin and at least one pigment, said resin providing instant hardening upon irradiation; applying said lacquer composition to selected areas of a flexible support by means of a rotary printing machine; shaping the applied lacquer to impart in it a relief that forms a hologram; and irradiating said shaped areas with a UV light / EB radiation.

The invention provides a polygon box body molding bonding machine which comprises a rack, a working table, a box body clamp device, a synchronous feeding mechanism, a glue drying device and a control system. The working table is arranged on the rack. The box body clamp device comprises a plurality of clamping head devices which are equidistantly arranged on the working table at intervals along the circumference of the working table and are used for clamping boards in a telescopic mode so as to enable a plurality of boards to be clamped to be of a polygon box body structure. The synchronous feeding mechanism is respectively connected with the plurality of clamping head devices and drives the plurality of clamping head devices to synchronously move forward or draw back in an operable mode. The glue drying device is arranged over the working table and is close to polygon box bodies coated with glue or far from the polygon box bodies with dried glue in an operable mode. The control system is respectively and electrically connected with the clamping head devices and the glue drying device. According to the polygon box body molding bonding machine, just the boards forming the polygon box bodies are placed on the box boy clamp device and then can be extruded to form the polygon box bodies in a bonding mode through the control system. The invention further provides a box body molding method.

The invention discloses a back side pressure-resistant waterproof coating material for leaking stoppage and seepage resistance of a back side and a preparation method thereof. The back side pressure-resistant waterproof coating material is prepared from the following materials in parts by weight: 400 to 500 parts of Portland cement, 350 to 480 parts of sand filler, 20 to 50 parts of latex powder,5 to 10 parts of waterproof agent, 10 to 50 parts of coagulation accelerator, 20 to 50 parts of active master batch, 2 to 10 parts of thixotropic agent, 2 to 5 parts of fiber, 0 to 2 parts of cellulose ether, 1 to 3 parts of defoaming agent and 1 to 10 parts of pigment. The back side pressure-resistant waterproof coating material for the leaking stoppage and the seepage resistance of the back side, disclosed by the invention, is firmly adhered to a fundamental plane and is high in bending strength and compression strength, good in seepage resistance, excellent in aging resistance, long in service life, low in shrinkage rate and absorption rate and excellent in waterproof performance.

An anti-UV contact lens mainly consists of a main substrate and an anti-UV material. The main substrate is hydroxyethylmethacrylate (HEMA), the anti-UV material contains an UV blocker and a photo initiator, wherein, the photo initiator basically consists of 2,4,6-trimethylbenzoyldiphenylphosphine oxide and benzoylformate initiator. The anti-UV contact lens can increase productivity without changing the original process, accelerate curing time of the UV blocker, and reduce defective rate.

This invention relates generally to flocked articles and methods for making the same, more particularly to flocked products having a silicone adhesive and methods for making and using the same.

The invention mainly relates to the technical field of epoxy terrace processing, and discloses an antistatic wear-resistant epoxy terrace coating which is prepared from the following raw materials: water-based bisphenol A epoxy resin, water-based UV resin, modified water-based polyurethane, calcium lignosulfonate, mica powder, hydroxypropyl methyl cellulose, fumed silica, negative ion powder, nano-silver and water; the antistatic wear-resistant epoxy terrace coating provided by the invention has the advantages that the paint film is smooth, the adhesive force is strong, the strength is high, the wear resistance is high, the generation of static electricity can be effectively prevented, the curing time is short, toxic components are not volatilized, the safety of the human body and the environment is guaranteed, the variety of the epoxy terrace coating on the market is increased, and the requirements of consumers are met; the water-based bisphenol A epoxy resin is placed in a reaction kettle for slow heating, and vacuum stirring is carried out, so that the activity of the water-based bisphenol A epoxy resin can be improved, and the subsequent preparation process is shortened.

The invention discloses a high-definition colorful three-dimensional touch decorative color board and a manufacturing method thereof. The high-definition colorful three-dimensional touch decorative color board comprises a metal plate base layer, a pretreatment layer, a primer layer, a printing layer and a protective film layer which are sequentially connected from bottom to top, wherein a formula of oil adopted by the printing layer is prepared from the following raw materials in parts by weight: 26 to 70 parts of resin monomer, 10 to 70 parts of prepolymer, 1 to 15 parts of nano-grade pigment, 1 to 30 parts of wax wetting agents, 1 to 15 parts of photoinitiator; the resin monomer is at least one of polyester acrylate, epoxy acrylate or neopentyl glycol propoxylate diacrylate. The invention realizes a method for directly printing patterns on a metal plate by using printing equipment.

The invention discloses a synthetic resin adhesive applied to an E1-class fiber board. The synthetic resin adhesive comprises the following components calculated by mass: 1050kg to 1650kg of melamine, 8300kg to 8650kg of urea, 11500kg to 12500kg of formaldehyde, 30kg to 40kg of borax and appropriate acid and alkali. The synthetic resin adhesive is obtained by reaction carried out to the materials. The synthetic resin adhesive applied to the E1-class fiber board manufactured by the formulation has free formaldehyde lower than or equal to 0.1 percent, which meets the requirement of the E1-class synthetic resin adhesive; meanwhile, the synthetic resin adhesive has good comprehensive performance and notably increased waterproof performance. The synthetic resin adhesive, on the premise of guaranteeing the comprehensive performance of the adhesive, can lower the manufacturing cost by about RMB 100 per ton by optimizing total mole ratio and decreasing the usage of melamine, thereby having good economic efficiency.

The invention discloses a high temperature resistant polyurethane complex adhesive, which belongs to the technical field of complex adhesives. The high temperature resistant polyurethane complex adhesive comprises the following substances by weight: 160 parts of methylbenzene, 150 parts of dimethyl carbonate, 587.5 parts of aromatic polyester polyol, 30 parts of polyphthalate polyol ester, 1.63 parts of trimethylolpropane, 65 parts of methylbenzene-2,4-diisocyanate, 1.5 parts of catalyst CAT S102, 1.2 parts of 1,4-butanediol, 1.2 parts of 1,3-butanediol, 0.15 part of antioxidant and 3.02 parts of organic bismuth. The complex adhesive, provided by the invention, has the advantages of large binding strength, strong high temperature resistance, short curing time of chemical curing, and capability of saving energy, optimizing environment and reaching standards of export products of European Union.