59 results about "Thermal curing" patented technology

The invention provides an epoxidized soybean oil-binary acid bio-based dynamic polymer, a preparation method thereof and a paper-based strain sensor packaged by the epoxidized soybean oil-binary acid bio-based dynamic polymer. The preparation method of the dynamic polymer comprises the following steps: (1) taking epoxidized soybean oil as an epoxy monomer, aliphatic dibasic acid as a flexible monomer and aromatic dibasic acid as a rigid monomer, and carrying out polymerization reaction in the presence of a transesterification catalyst to obtain a dynamic polymer prepolymer; the aliphatic binary acid comprises succinic acid, adipic acid and sebacic acid; (2) removing bubbles from the dynamic polymer prepolymer; and (3) carrying out thermal curing on the dynamic polymer prepolymer to obtain the epoxidized soybean oil-binary acid bio-based dynamic polymer. The epoxidized soybean oil-binary acid bio-based dynamic polymer has good mechanical properties and hydrophobicity, a paper-based strain sensor based on the epoxidized soybean oil-binary acid bio-based dynamic polymer also has good mechanical properties and hydrophobicity, and the sensor has certain application potential in the field of human motion monitoring.

The invention relates to an automatic coating device for a thermocuring insulating film. Comprising a lower film forming mechanism used for forming a cavity where an aluminum sheet needs to be placed on a lower film, an aluminum sheet feeding mechanism used for placing the aluminum sheet into the cavity of the lower film and packaging and cutting the aluminum sheet and an upper film to form a product, and a tool assembling and disassembling mechanism used for loading the product into a thermocuring tool or disassembling the product from the thermocuring tool. The thermocuring and cooling mechanism is used for thermocuring and cooling the product loaded in the thermocuring tool; the tool assembling and disassembling mechanism is used for assembling a thermocuring tool, the post-processing mechanism is used for cutting, detecting and discharging a product subjected to thermocuring, and the transferring mechanism is used for transferring the thermocuring tool between the tool assembling and disassembling mechanism and the thermocuring and cooling mechanism and transferring the product between the tool assembling and disassembling mechanism and the post-processing mechanism. The labor cost is reduced, and the labor intensity and the production cost are reduced; the production quality and the production efficiency are improved, and the applicability is wide.

Disclosed is a silicone-modified polyimide resin composition comprising a silicone-modified polyimide, a thermal curing agent, wherein the silicone-modified polyimide contains a repeating unit represented by the following general formula (I): in the general formula (I), Ar 1 is a tetravalent organic group having a benzene ring or alicyclic hydrocarbon structure, Ar 2 is a divalent organic group, R is independently selected from a methyl group or a phenyl group, and the thermal curing agent is an epoxy resin, an isocyanate, or a bisoxazoline compound. The silicone-modified polyimide resin composition obtained by the present application has excellent heat resistance, mechanical strength, and light transmittance.

The application provides a packaging adhesive film and a photovoltaic module. The packaging adhesive film comprises a UV curing buffer layer and a thermal curing adhesive layer which are stacked in sequence, wherein the material of the UV curing buffer layer comprises a modified POE resin and a UV assistant crosslinking agent, the modified POE resin is grafted with a photoinitiator molecular fragment containing and / or a functional group, wherein "*" represents the connection position thereof in the photoinitiator molecular fragment. The pre-crosslinking degree gradually decreases in the UV curing buffer layer along the direction close to the thermal curing adhesive layer, thereby preventing the problem that the packaging adhesive film penetrates into the gap between the solder strip and the cell piece to form a false weld due to excessive flowability, avoiding the problem that the overall pre-crosslinking degree of the UV curing buffer layer is too large to cause hidden cracks on the cell piece during the laminating process, and preventing the problems of yellowing caused by the migration of the initiator and the precipitation of the assistant, and solving the problems of easy formation of false weld and occurrence of hidden cracks on the cell piece during the packaging of the HJT cell.

Provided is a mixture which has a long usable time in a manufacturing process, has little change in characteristics due to heating during bonded magnet molding, and has high mechanical strength even when a thermosetting resin is subjected to a curing reaction under low temperature conditions. A mixture containing an epoxy resin (A), metal element-containing particles (C), and a curing agent (D) having an imidazole structure, the curing agent (D) having an imidazole structure comprising a compound represented by formula (1) and / or a compound represented by formula (2). R1, R2, X, Y, Z, m and n are as described in the specification.

The present invention provides a curable composition that possesses tackiness and plastic deformability in a semi-cured state and excellent strength after thermal curing, a semi-cured product of the curable composition, a substrate coated with the semi-cured product, a laminate containing the curable composition, and a method for manufacturing the same. [Solution] The curable composition according to the present disclosure contains a monofunctional (meth)acrylate (A1) and a polyfunctional (meth)acrylate (A2), which each contain a linear aliphatic hydrocarbon group that may have an ether bond and / or ester bond between carbon atoms and may have an alicyclic ring with a heteroatom as a substituent. A photopolymerization initiator (B), an epoxy resin (C), a thermosetting agent (D), and a tackifier (E) containing a terpene phenol resin.

An apparatus for thermal curing of a lens-forming material contained in a plurality of closed contact lens molds, comprises a curing oven comprising a curing chamber for accommodating a stack of curing trays, with each curing tray of the stack arranged at a respective predetermined vertical level. The curing oven further comprises a supply channel and a baffle separating the supply channel from the curing chamber, the baffle comprising a plurality of supply holes. At a chamber inlet, the curing chamber is fluidly connected with the supply channel via the supply holes only, wherein the plurality of supply holes of the baffle are arranged along a plurality of horizontally extending rows, with one said row of the plurality of rows being arranged at an intermediate vertical level between each adjacent ones of the said predetermined vertical levels at which the curing trays of the stack are to be arranged.

The application discloses a preparation of a thermosetting benzocyclobutene-based MQ silicone resin and application thereof in preparing a glass fiber composite material, and comprises the following steps: stirring and reacting an organic silicon source, a solvent, a catalyst and water at 30-50 DEG C for 30-90 min to form a mixed solution A; uniformly mixing divinylsiloxane-benzocyclobutene and the solvent to form a mixed solution B, adding the mixed solution B into the mixed solution A, and heating to 65-80 DEG C for 1-3 h; adding an organic phase after the reaction is completed, washing with water for several times until neutral, removing the solvent by vacuum distillation, and vacuum drying; and obtaining the thermosetting benzocyclobutene-based MQ silicone resin. The thermosetting benzocyclobutene-based MQ silicone resin has excellent dielectric properties, mechanical properties, heat resistance and chemical stability, and the cured resin formed by thermal crosslinking has the properties of low dielectric, high tensile strength, high bending strength, chemical stability and heat resistance.

In reaction products obtained by condensation reactions of phenols, diamines, and formaldehyde, the mass loss during thermal curing is reduced. [Solution] The reaction product according to the embodiment includes a first product of formula (1) and a second product of formula (2), wherein the peak area of ​​the second product is 5-15% of the total peak area of ​​the reaction product by HPLC, and the combined peak area of ​​the first and second products is 65-75%. JPEG2026059928000018.jpg80141

The application relates to the technical field of layered products, and discloses a high-elasticity weather-resistant composite waterproof roll material and a preparation method thereof. The roll material is a layered product, and sequentially comprises an upper reinforcing layer, a core layer and a lower reinforcing layer from top to bottom. The core layer is prepared from a bio-based polyurethane prepolymer prepared by reacting a microbial fermentation source long-chain polyester diol with an aliphatic diisocyanate, and is formed by thermal curing in cooperation with a chain extender, a catalyst and inorganic fillers. The long-chain polyester diol is obtained by polycondensation of a hydroxyl fatty acid monomer with a carbon chain length of ten to eighteen, and does not contain a double bond structure in the molecular chain. The application eliminates weak sites of photo-oxidative chain scission in the chain segment from the root of the molecular structure, blocks a chain scission path caused by ultraviolet rays, and maintains the elastic structure integrity of the roll material under long-term illumination.

The invention discloses a heating device for a thermocuring oven, and belongs to the technical field of thermocuring ovens.The heating device comprises a heating box body, a turnover door plate is arranged on the heating box body, hinges are connected between the turnover door plate and the heating box body, fixing blocks are arranged on the two sides of the heating box body, and heater shells are installed on the fixing blocks; and an extrusion plate is arranged on the heater shell, a fastening bolt is connected between the extrusion plate and the fixing block, and a heating pipe is installed in the heater shell. The heater shell is detachably connected with the fixing block through the extrusion plate and the fastening bolt, the heating pipe is detachably connected with the heater shell through the buckle, and when the heating pipe is damaged or needs to be overhauled, the heating pipe can be rapidly disassembled and replaced, the downtime of equipment is shortened, and the production efficiency is improved; and the workpieces can be automatically popped out of the heating box body after being cured, so that the workpieces are convenient to take.

There is provided an easily dismantlable resin composition for fixing a rotor which is a resin composition for fixing a rotor used for forming a fixing member (130) of a rotor (100) including a rotor core (110) provided to be fixed to a rotating shaft and provided to include a plurality of hole parts arranged along a peripheral edge part of the rotating shaft, a magnet (120) inserted into the hole part (150), and a fixing member (130) provided in a spacing part between the hole part (150) and the magnet (120), where the resin composition for fixing a rotor contains a thermosetting component, and a cared body obtained after thermally curing the resin composition for fixing a rotor has a structure represented by Formula (1). wi=“152.4” / > (In Formula (1), R1 and R2 each independently represent any of a hydrogen atom, a hydrocarbon group or aromatic group having 1 to 30 carbon atoms, a hydroxyl group, and an alkoxyl group having 1 to 30 carbon atoms.)

The application provides a rosin-based bio-based benzoxazine, a high-thermal-conductivity liquid crystal benzoxazine resin and a preparation method and application thereof. First, a binary phenol, an amine and paraformaldehyde are used as raw materials to obtain a double benzoxazine through a Mannich reaction; the double benzoxazine is subjected to an amidation reaction with an amino-containing rosin derivative to obtain a bio-based benzoxazine monomer. The bio-based benzoxazine monomer is subjected to thermal curing to obtain a benzoxazine resin containing a rosin side group. The benzoxazine resin containing the rosin side group has a liquid crystal structure, high heat resistance and high thermal conductivity, and has a good application prospect in the fields of integrated circuits, (LED) lighting and the like. The synthesis process of the application is simple, the reaction condition is mild, the yield is high, the equipment requirement is low, and the application is suitable for large-scale production.

The application discloses a preparation method of an asymmetric layered PDMS electromagnetic shielding material, and specifically comprises the following steps f -Ni, AgNPs@GO powder, AgNPs@GO precursor, AgNWs, f -Ni@GO precursor; through f -Ni@GO precursor and AgNPs@GO precursor to obtain an asymmetric layered aerogel; in combination with AgNWs / PDMS conductive paste, an asymmetric three-layer structure is obtained; vacuum-assisted impregnation of PDMS and thermal curing are performed, and the asymmetric layered PDMS electromagnetic shielding material is obtained. The application further discloses the asymmetric layered PDMS electromagnetic shielding material, and solves the problem that polymer-based electromagnetic shielding composite materials in the prior art are difficult to simultaneously consider high electromagnetic shielding efficiency, low reflection characteristics and absorption-dominant shielding effect under the condition of low filler content.

The invention relates to the technical field of bamboo sticks, in particular to a high-strength bamboo stick easy to process and a preparation method thereof. The preparation method of the high-strength bamboo stick easy to process comprises the steps of preparation of the modified nanocellulose, preparation of a bamboo stick rough blank and preparation of the bamboo stick. The water-based phenolic resin prepolymer, the nano silicon dioxide and the modified nano cellulose are used as reinforcing modifiers and permeate into the bamboo wood through vacuum pressurization, a synergistic reinforcing structure is formed after thermocuring, the bending strength is improved, the moisture and mildewing phenomena are reduced, the modified nano cellulose is good in hydrophobicity and uniform in dispersion, the toughness can be improved through a flexible interface layer of the modified nano cellulose, and the service life of the bamboo wood is prolonged. And the bamboo canes are subjected to freeze thawing to construct pores and then are subjected to impurity removal by using the composite bio-enzyme, so that the modifier can be assisted to permeate and reinforce the combination, and a'medium temperature-high temperature-medium temperature 'gradient drying is adopted, so that the moisture is controlled, the cracking deformation is prevented, and the yield is improved.

The utility model discloses a glass fiber pipe braider, rack fixed workstation, workstation is through support and is equipped with weaving mechanism, impregnation mechanism, thermal curing mechanism, and support sets up weaving column and guide pipe. The impregnation mechanism is composed of support, circulating pump, glue basin, riser, spray head and return pipe, and the circulating pump pumps glue to the spray head and covers the pipe body, and the thermal curing mechanism contains fixed frame, conveying belt, heating device and cutting device, and is cut in line after solidification. The whole machine integrates weaving, impregnation, solidification and cutting, and realizes continuous operation, improves efficiency and quality.

The application discloses a kind of for medical blister box bonding glue and its preparation method and application, by weight parts, including the following components: hydrogenated bisphenol A type epoxy resin is 20~40 parts;Aliphatic polyurethane acrylate prepolymer is 25~45 parts;Active diluent is 15~30 parts;Microcapsule covers low-temperature latent curing agent is 3~10 parts;Phosphate modified acrylate adhesion promoter is 1~5 parts;Photoinitiator is 1~4 parts;Fumed silica is 0.5~3 parts;Auxiliary agent is 0.2~2 parts.The application has the advantages that UV curing rapid positioning and low-temperature thermal curing deep crosslinking characteristics are combined, meet the stringent requirements of medical packaging on biocompatibility, high transparency, sterilization resistance and high bonding strength.

A coated panel has at least a substrate and a top layer applied thereto, The top layer includes at least a decor layer and a translucent or transparent wear layer. The above-mentioned wear layer has a thermally cured acrylate resin or a thermally cured unsaturated polyester resin. Thermal curing partially or completely cures the resin. The acrylate resin or unsaturated polyester resin is at least partially cured by a thermally initiated radical crosslinking reaction. A method for the production of such coated panels, in particular floor panels, is provided according the aforementioned coated panel.

The utility model discloses a household multifunctional breakfast maker. The household multifunctional breakfast machine comprises a stove bottom used for heating, a frying pan is arranged at the upper end of the stove bottom, and a pot cover is arranged on the frying pan; the stove bottom comprises a base, and an electric heating wire is arranged in the base; the frying pan comprises a pan body and a pan handle mounted on the side wall of the pan body; the pot cover comprises a glass cover, a handle is rotationally installed at the upper end of the glass cover, and the handle can drive a scraping strip horizontally arranged at the lower end of the glass cover to rotate. According to the household multifunctional breakfast machine, the paste spreading effect is achieved by arranging the scraping strip, due to the fact that the paste is rapidly and evenly spread at the bottom of the pan, the thicknesses of all parts of the paste are consistent after the paste is heated and solidified, the made pancakes are better in taste, in addition, the frying pan can be used for hot milk, and multiple purposes are achieved through one pan.

The invention relates to the field of high polymer materials and adhesion, and discloses a silica gel belt with good viscosity and a preparation method thereof, and the silica gel belt comprises a back base layer, an interface grafting activation layer, a main pressure-sensitive adhesive layer and a release film from bottom to top. Through the design of a double-layer structure, a component with double functional groups is introduced into an interface layer, so that chemical bridging between silica gel and an upper-layer adhesive is realized; the main bonding layer adopts a multi-phase polymer system, so that the bonding performance and the structural stability are enhanced. The interface layer contains acryloyloxypropyltriethoxysilane, an isocyanate-terminated polyester polymer and other components, and a grafting layer is formed under the irradiation of ultraviolet light; the main bonding layer contains acrylic acid-polyether copolymer, amino silane modified polyurethane and other components, and cross-linking setting is achieved through thermocuring. Through an interface synergistic reaction mechanism, structural interconnection between material layers is realized, and the bonding force and the structural adaptability of the silica gel belt are remarkably improved.

The application discloses a preparation method of wind power blade repair resin and a wind power blade repair method. The wind power blade repair resin comprises bisphenol A type epoxy resin, a diluent and an initiator. The diluent is an alicyclic epoxy type diluent. The initiator is one or a combination of cationic initiator and free radical initiator. After mixing and proportioning, the mixed monomers are impregnated with a fabric and coated on a damaged part of the wind power blade. The polymerization reaction of the local coating area is started by using a heat source, a light source or a laser beam. After the polymerization reaction is started, the monomers continuously release heat to maintain the reaction until the mixed monomers in all coating areas are converted into polymers, and the system is completely cured. Compared with the traditional epoxy thermal curing resin, the polymerization process of the resin completely relies on the heat release of the monomers, and the energy consumption is extremely low without external heating. The curing reaction speed is fast, the performance of the cured plate is good, and the efficiency of the wind power blade repair work can be improved.

The present invention provides a film-like solder connection material which is capable of suppressing scattering of a solder and has good handling properties.　This solder connection material 21 contains a film-forming resin, a liquid epoxy resin, a thermal curing agent, a solder particle 20, and a flux component, and has a maximum melt viscosity at 170°C or more of 40,000 Pa∙s or less. It is preferable that the arithmetic average of the weight average molecular weight of the film-forming resin is 10,000-20,000.

The invention relates to the technical field of preparation of anti-mosquito materials, in particular to a polyurethane-polyurea composite wall material anti-mosquito microcapsule emulsion as well as a preparation method and application thereof. A wall material of the microcapsule comprises a polyurethane-polyurea composite material, and a capsule core contains mosquito-repellent active ingredients. The anti-mosquito micro-emulsion capsule is characterized in that an anti-mosquito functional substance is emulsified by an in-situ polymerization-interface synergy method and then compounded with a wall material prepolymer, and polymerization is initiated to obtain a microcapsule structure. The coating liquid can be used for a film coating through thermocuring, so that the preparation of an anti-mosquito coating is realized. The coating is good in transparency and strong in adhesive force, the mosquito repelling rate is greater than 70%, and the coating has a very strong anti-mosquito effect.

A coated panel has at least a substrate and a top layer applied thereto, The top layer includes at least a decor layer and a translucent or transparent wear layer. The above-mentioned wear layer has a thermally cured acrylate resin or a thermally cured unsaturated polyester resin. Thermal curing partially or completely cures the resin. The acrylate resin or unsaturated polyester resin is at least partially cured by a thermally initiated radical crosslinking reaction. A method for the production of such coated panels, in particular floor panels, is provided according the aforementioned coated panel.

The invention discloses macroporous silicon dioxide microspheres as well as a preparation method and application thereof, and belongs to the technical field of nano high-tech materials. The main aperture of the silicon dioxide microsphere is about 100nm, the primary particle size is 50nm, the agglomerated particle size D50 is 100mu m, and the specific surface area is gt; the pore volume is 1.0 to 1.75 cm / g. According to the preparation method, rice hull-based high-purity sodium silicate with the modulus of 3.25 and carbon dioxide are used as main raw materials, and the designed core technology is that a double-template system composed of polystyrene microspheres and a macromolecular block copolymer is adopted, and under specific conditions, processes such as carbon dioxide carbonization gel, spray drying granulation, oil-phase thermocuring and programmed roasting are used. The rice hull-based green high-tech material obtained by the method has the advantages of mild reaction process, good controllability of aperture and particle size, and high mechanical strength of the product. The macroporous silica microspheres prepared by the method are particularly suitable for the fields of drug controlled release systems, biological macromolecule chromatographic separation, immobilized enzyme carriers, high-performance catalyst carriers and the like.

The invention discloses rapid self-healing epoxy resin as well as a preparation method and application thereof, and particularly relates to near-infrared light rapid self-healing epoxy resin as well as a preparation method and application thereof. The preparation method comprises the following steps: reacting epoxy resin with a boric acid derivative to obtain epoxy resin containing a boric acid ester bond, reacting a furan derivative with a maleimide derivative to obtain a mixed solution containing a Diels-Alder bond, and reacting the mixed solution with the epoxy resin containing the boric acid ester bond to obtain the epoxy resin containing the boric acid ester bond. And further reacting with a nano material with a photothermal effect, and finally, respectively carrying out photocuring and post-thermal curing. Double dynamic covalent bonds are constructed through Diels-Alder reaction and boric acid ester bond ester exchange reaction, meanwhile, the photo-thermal conversion effect of the double dynamic covalent bonds is achieved through the Diels-Alder reaction functionalized carbon nanomaterial, and the epoxy resin capable of achieving rapid and efficient self-healing under near-infrared light irradiation is prepared through the synergistic effect of the double dynamic covalent bonds and the Diels-Alder reaction functionalized carbon nanomaterial.

The invention discloses a wear-resistant resin-based coating with a multi-scale gradient structure based on a spin-coating process and a preparation method of the wear-resistant resin-based coating, and belongs to the technical field of coating preparation. The problems that filler in an existing wear-resistant resin coating is uneven in distribution and prone to agglomeration or sedimentation, the coating and a matrix interface are poor in bonding, durability and mechanical performance are reduced and the like are solved. The preparation method comprises the following steps: respectively mixing a nano-scale filler, a submicron-scale filler and a micron-scale filler with a resin matrix, adding a reactive diluent, a photo-thermal dual-curing initiator and an auxiliary agent, sequentially spin-coating the three slurries from bottom to top at different rotating speeds and time, and then carrying out ultraviolet pre-curing and thermocuring. According to the invention, centrifugal force generated by spin-coating is utilized to drive the fillers with different sizes to be distributed according to the size gradient, the micron-sized hard filler is enriched on the surface to provide wear resistance, and the nano-sized filler is distributed on the bottom layer to enhance the adhesive force, so that an adhesion-transition-wear-resistant gradient functional structure is formed, and the mechanical property of the coating and the bonding capacity of the coating and a matrix interface are improved.

The invention relates to the technical field of polymer composite materials, and discloses a high-weatherability fiber reinforced composite material and a preparation method and application thereof, the material is formed by combining an inner fiber reinforced resin matrix layer and an outer weatherability layer; the weather-proof layer is prepared by curing a coating liquid containing hydroxyl functionalized FEVE resin, a reactive diluent, a reactive interface modifier containing isocyanate and double bonds, a light conversion material and a photothermal initiator. The preparation method comprises the following steps: preparing a photo-thermal dual-curing coating liquid, coating and pre-curing by ultraviolet light to form a B-stage weather-proof felt, assembling the B-stage weather-proof felt with an internal reinforcing material, and carrying out thermal curing molding by a reactive pultrusion process. By constructing a gradient permeation network and chemical bonding, the problem of poor adhesion between fluororesin and a matrix layer is solved, the coating and the matrix are integrally formed, and the coating has excellent weather resistance and interface bonding strength and is suitable for photovoltaic frames and outdoor structural parts.

A coated panel has at least a substrate and a top layer applied thereto, The top layer includes at least a decor layer and a translucent or transparent wear layer. The above-mentioned wear layer has a thermally cured acrylate resin or a thermally cured unsaturated polyester resin. Thermal curing partially or completely cures the resin. The acrylate resin or unsaturated polyester resin is at least partially cured by a thermally initiated radical crosslinking reaction. A method for the production of such coated panels, in particular floor panels, is provided according the aforementioned coated panel.

The invention relates to a coated panel and a method of manufacturing a coated panel. In particular, the invention relates to a coated panel having at least a substrate (2) and a top layer (3) applied thereon, wherein said top layer (3) comprises at least a decorative layer (4) and a semi-transparent or transparent wear layer (5), characterized in that said wear layer (5) comprises a thermally cured acrylate resin or a thermally cured unsaturated polyester resin. Preferably, wherein the thermal curing cures the resin partially or completely. In particular, wherein said acrylate resin or unsaturated polyester resin is at least partially cured by a thermal initiated free radical crosslinking reaction. The invention also relates to a method of producing such a coated panel (1), in particular a method of producing a floor panel.