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835 results about "Polymer resin" patented technology

Polymer resin is a clear liquid plastic product that hardens to create a thick, durable, glossy coating.

Cable Trough

A cable trough for installing cables alongside a railway line or other right of way is described. The cable trough is constructed using longitudinally oriented reinforcing fibers coated with polymeric resin that generally aligns the reinforcing fibers with the length of the cable trough. One or more connector clips may be used to secure respective portions of the cable trough to one another. The cable trough is provided with a cover that may be removably secured to an elongate channel to protect the cables housed within the cable trough. Elbows, corners, tees, and other connectors may be provided to run the cable trough in any desired direction. A method of installing cables in a cable trough is also described.
Owner:PREMIER CUSTOM TROUGH

Multi-layer composite structure flexible frequency selective surface material and preparation method thereof

The invention relates to the field of electromagnetic functional composite materials, and particularly discloses a multi-layer composite structure flexible frequency selective surface material and a preparation method thereof. The ultra-high molecular weight polymer fiber-reinforced polymer-based composite material thin-film mechanical enhanced band-pass frequency selection array sequentially comprises an acrylic acid polyvinylidene fluoride organic polymer coating environment-resistant layer, a metal oxide organic film isolation layer, an ultra-high molecular weight polymer fiber-reinforced polymer-based composite material thin-film mechanical enhanced layer, a band-pass frequency selection layer and a packaging protection layer from top to bottom, and the band-pass frequency selection layer is a hexagonal / circular ring nested band-pass frequency selection pattern array. The packaging protection layer is formed by printing a conductive coating composed of conductive filler / polymer resin matrix, and the packaging protection layer is an ink coating. The flexible frequency selective surface material has the characteristics of light weight, high strength, salt fog / rain / ultraviolet and other severe environments, frequency selective wave transmission and multiple functions, has good gas barrier property, is beneficial to maintaining the shape of an inflatable hangar made of a skin and ensuring normal operation of radar equipment, and has good practical engineering application value.
Owner:NAT UNIV OF DEFENSE TECH

Coal-based porous carbon for preparing silicon-carbon negative electrode material as well as preparation method and application of coal-based porous carbon

The invention provides coal-based porous carbon for preparing a silicon-carbon negative electrode material as well as a preparation method and application of the coal-based porous carbon, coal-based porous graphite is used as a matrix carbon material, polymer resin is used as a rigid bonding and coating material, heterogeneous elements such as B, N and P are used as doping materials, a carbon nanotube is used as a flexible conductive buffer material, and the materials are dispersed in a solvent to form slurry; through atomization granulation and high-temperature carbonization, heterogeneous element doped resin hard carbon is bridged with carbon nanotubes to construct a three-dimensional rigid-flexible conductive network to cooperatively coat the surface of the porous coal-based graphite, and doped heterogeneous elements are utilized to induce chemical-physical auxiliary activation to perform micro-mesoporous precise regulation and control pore forming on an inner core and a shell. The prepared novel coal-based porous carbon is high in porous framework particle strength and reasonable in pore distribution and has a three-dimensional rigid-flexible conductive network core-shell structure. The invention aims to solve the problems of unreasonable pore distribution of porous carbon, poor matrix strength and the like in the preparation process of a novel vapor deposition silicon-carbon negative electrode material.
Owner:博尔特新材料(银川)有限公司

Reflective thermal insulation coating based on three-dimensional porous resin as well as preparation method and application of reflective thermal insulation coating

The invention provides a reflective thermal insulation coating based on three-dimensional porous resin as well as a preparation method and application of the reflective thermal insulation coating. The coating is prepared from the following raw materials in parts by weight: 15 to 60 parts of polymer resin emulsion, 1 to 15 parts of good solvent, 1 to 15 parts of poor solvent, 5 to 15 parts of reflective filler, 2 to 5 parts of nano kaolin and 1 to 5 parts of silicon dioxide aerogel. The reflective filler is hollow glass microspheres jointly modified by a silane coupling agent and titanium n-butoxide. The chemical reaction between the silane coupling agent and the surfaces of the glass microspheres can enhance the binding force between the silane coupling agent and the resin matrix, and avoids the problems of aggregation and sedimentation in the coating, thereby improving the uniformity and stability of the coating. Meanwhile, titanium n-butoxide is introduced, a TiO2 coating layer is generated through a hydrolysis reaction, heat can be effectively reflected through the high reflectivity of TiO2, heat absorption of the coating is reduced, and the heat insulation effect is improved. Therefore, the double-modified hollow glass microspheres can play a better heat insulation role in the coating, and the overall heat insulation efficiency of the coating is improved.
Owner:JIANGSU SOBUTE NEW MATERIALS CO LTD +1

Semiconductor encapsulation composition and semiconductor package including the same

A semiconductor encapsulation composition includes a polymer resin, a hardener, a filler, and an additive configured to adjust a reaction rate between the polymer resin and the hardener, wherein the polymer resin includes a high heat-dissipating resin having a mesogen unit, and the filler includes diamond powder or a mixture of the diamond powder and an inorganic filler.
Owner:SAMSUNG ELECTRONICS CO LTD

Flexible antifouling and resistance-reducing composite coating with temperature responsiveness and preparation method and application of flexible antifouling and resistance-reducing composite coating

The invention discloses a flexible anti-fouling and anti-drag composite coating with temperature responsiveness and a preparation method and application of the flexible anti-fouling and anti-drag composite coating. The flexible antifouling anti-drag composite coating comprises a substrate layer, a flexible buffer layer, an antifouling response layer and a hydrophobic surface layer which are sequentially formed on the surface of a base material, wherein the substrate layer comprises adhesive resin, a positively charged polymer and a particle filler; the flexible buffer layer comprises flexible polymer resin, a negatively charged polymer, a polymer drag reducer and an anti-ultraviolet additive; the hydrophobic surface layer comprises flexible polymer resin, a temperature-responsive polymer microcapsule encapsulated with an antifouling agent, a pore-foaming agent, an anti-ultraviolet additive and super-hydrophobic micro-nano particles. The flexible anti-fouling and anti-drag composite coating with temperature responsiveness provided by the invention has strong binding force with a base material, and also has anti-fouling property, corrosion protection property and anti-drag property; meanwhile, the preparation method provided by the invention has the advantages of wide application range, large-area coating and the like.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI

Corrosion-resistant film for magnesium alloy wheel and preparation method thereof

Disclosed are a corrosion-resistant film for a magnesium alloy wheel and a preparation method thereof, The corrosion-resistant film for a magnesium alloy wheel includes: a micro-arc oxidation (MAO) coating, a chemically blocked coating, a physical vapor deposition (PVD) high-density inorganic hybrid coating, a high oxidation-resistant powder coating which are sequentially stacked from inside to outside by using the magnesium alloy wheel as a substrate. In the present disclosure, based on a micro-arc oxidation technology, zirconium, titanium, an iron salt, nano silicon, polymer resin are added into an electrolytic solution, and under a constant voltage mode of an adjustable power supply, the MAO coating is generated on the surface of the magnesium alloy wheel, followed by chemical blocking; the PVD high-density inorganic hybrid coating is obtained by coating on the chemically blocked coating, physical blocking is performed; the high oxidation-resistant powder coating is spray-coated on the PVD high-density inorganic hybrid coating.
Owner:CITIC DICASTAL CO LTD

Single-component modified silane adhesive as well as preparation method and application thereof

The invention provides a single-component modified silane adhesive as well as a preparation method and application thereof. The adhesive is prepared by mixing the following components: silane modified polyether resin, silane modified polymer resin, a plasticizer, a composite light stabilizer, a filler, a rheological additive, a water removal agent, a coupling agent and a catalyst, the silane modified polyether resin is silane-terminated resin prepared by a hydrosilylation method; the silane-modified polymer resin is a silane-terminated polymer resin containing a urethane bond. The adhesive is excellent in comprehensive performance, the tensile strength of a body is larger than 3 MPa, the elongation at break is larger than 450%, the adhesive is high in adhesion universality to metal base materials, PET films, ceramics, glass, wood floors, PVC, PC, ABS, wood-plastic composite materials and paint faces, the base materials do not need to be specially treated, the damage form is cohesive failure, and the adhesive has good adhesion strength, tear resistance and excellent temperature resistance and is suitable for being applied to the field of wood products. After aging at 120 DEG C for one week, the tensile strength of the body is greater than 3 MPa, the elongation at break is greater than 430%, and the surface layer can be coated after curing.
Owner:HUBEI HUITIAN NEW MATERIALS STOCK CO LTD +3

Novel automobile back view mirror flexible printed circuit board prepared based on weldable silver paste

The invention discloses a novel automobile back view mirror flexible printed circuit board prepared based on weldable silver paste, and belongs to the technical field of electronic materials and devices, conductor patterns in the flexible printed circuit board comprise a main circuit pattern and an auxiliary function structure formed by weldable low-temperature curing silver paste; the curing temperature of the weldable low-temperature silver paste is 125-135 DEG C, and the weldable low-temperature silver paste comprises conductive filler, a polymer resin system, a high-boiling-point ester solvent, a curing agent, a silane coupling agent, a polyamide wax thixotropic agent, a polysiloxane defoaming agent, modified carbon nanotubes, modified aluminum oxide powder, modified barium sulfate and a low-stress modifier. The polymer resin system comprises novolac epoxy resin, biphenyl epoxy resin and a polyacrylate-CTBN copolymer; through the synergistic effect of all the components and an innovative process, comprehensive improvement of mechanical reliability, environmental durability, conductive stability and power load capacity is achieved, and the strict requirement for high reliability of the automobile rearview mirror in an extreme environment is perfectly met.
Owner:NANO TOP ELECTRONICS TECH

Novel notebook flexible printed circuit board prepared based on weldable low-temperature silver paste and backlight module

The invention discloses a novel notebook flexible printed circuit board prepared based on weldable low-temperature silver paste and a backlight module, and belongs to the technical field of electronic materials and devices. Conductor patterns of the flexible printed circuit board comprise a main circuit pattern formed by rolled copper; the auxiliary function structure is formed in a local area of the main circuit pattern by weldable low-temperature silver paste; the curing temperature of the weldable low-temperature silver paste is 130-145 DEG C, the weldable low-temperature silver paste comprises conductive filler, a polymer resin system, an ester solvent, a curing agent, a silane coupling agent, a polyamide wax thixotropic agent, a polysiloxane defoaming agent, modified carbon nanotubes and modified antimony tin oxide powder, and the conductive filler comprises flaky silver powder, spherical silver powder and low-temperature alloy powder. The low-temperature alloy powder is Sn42Bi58 low-temperature alloy powder of which D50 is 12 [mu] m-15 [mu] m; according to the invention, low-temperature curing, high flexibility, excellent conductivity and direct weldability are integrated, and a solution suitable for local repair of a flexible printed circuit board and direct mounting of a jumper and a Mini LED chip is provided.
Owner:NANO TOP ELECTRONICS TECH

Improved Graphene and Graphene Oxide Dispersion by In-Situ Chemical Modification During Processing

Disclosed is a composition comprising from about 60 wt. % to about 99.85 wt. % of a polar polymer resin, from about 0.05 wt. % to about 20 wt. % of graphene; and from about 0.001 wt. % to about 8 wt. % of a base additive, wherein the graphene and base additive are combined in the composition to provide a modified graphene, wherein a molded sample of the composition exhibits a greater multi-axial impact strength than a reference composition in the absence of the base additive when tested in accordance with ISO 6603, wherein the combined weight percent value of all components does not exceed 100 wt. %, and all weight percent values are based on the total weight of the composition.
Owner:SHPP GLOBAL TECH BV

Preparation of N and P flame retardant and application of N and P flame retardant in flame-retardant polymer

PendingCN120309806APolymer sciencePolymer resin
The invention discloses preparation of an N and P flame retardant and application of the N and P flame retardant in a flame-retardant polymer. The N and P series flame retardant is a copolymer containing a DOPO group and an anhydride group, and the molecular structure of the N and P series flame retardant comprises at least one of a structural unit I and / or a structural unit II, a structural unit III and a structural unit IV, or at least one of structural units V-VI. The molecular structure of the N, P-series flame retardant contains DOPO groups, and the N, P-series flame retardant shows excellent flame retardance after being blended with polymer resin. Moreover, the molecular structure of the flame retardant contains anhydride groups, so that the flame retardant molecules and a polymer resin matrix have better compatibility, and the original mechanical properties of the polymer resin are retained to a great extent. Meanwhile, the anhydride group is used as an acid source, so that the effect of promoting char formation can be achieved. Due to the existence of the anhydride group, the problems of insufficient flame retardant efficiency, poor compatibility with a polymer resin matrix and the like when the DOPO flame retardant is independently used are solved.
Owner:BEIJING UNIV OF CHEM TECH

Water absorption composition and preparation method thereof

The invention relates to the technical field of high polymer materials, and particularly discloses a water-absorbing composition and a preparation method thereof. The water absorption composition comprises the following components: polymer resin, a molecular sieve, polyethylene glycol, calcium stearate, glyceryl trioleate and an antioxidant. The polymer resin comprises polypropylene and polyethylene oxide. Compared with the prior art, the water-absorbing composition has the advantages that the calcium stearate and the glyceryl trioleate which have a lubricating effect are added, so that the flowability of the water-absorbing composition in the processing process is favorably improved, and the processing performance of the water-absorbing composition is improved; the antioxidant is added, so that the oxidation resistance of the water-absorbing composition is improved; particularly, polyethylene oxide is added, so that the water absorption performance of the water absorption composition can be remarkably improved.
Owner:JINAN UNIVERSITY +1

Cavitated PHA-rich films and a method for making the same

A biaxially oriented cavitated PHA-rich composite film comprises a PHA-rich core layer and a first outer skin layer and a second outer skin layer. The core layer comprises a PHA resin at an amount of more than 50 wt % of a total weight of the polymeric resin in the core layer and a modifier X, the modifier X includes PLA resins and PLA copolymers and at least one mineral inorganic cavitating agent; the first outer skin layer comprises a PLA resin at an amount less than 50 wt % of the total weight of the outer layer and biopolymers comprising PHA resins or PBSA resins or PCL resins or mixture thereof. The PHA-rich composite film shows a reduced film density and higher yield as well as low light transmission rate.
Owner:TORAY PLASTICS (AMERICA) INC

Acrylamido triazine as well as preparation method and application thereof

The invention relates to the technical field of organic synthesis, in particular to acrylamido triazine and a preparation method and application thereof.The preparation method comprises the steps that 126 g of melamine is weighed and placed in a three-opening round-bottom flask, 600 g of water and 2-10 g of polymerization inhibitor are added and stirred to be uniform, 60-260 g of acrylic acid is dropwise added, the mixture is heated to 100-140 DEG C, the reaction time is 6-10 h, and a reaction solution is obtained; and filtering the reaction liquid while the reaction liquid is hot, washing a filter cake with water, acetone and ethanol respectively, and drying to obtain the acrylamido triazine. The prepared 1-acrylamide triazine can be used for free radical polymerization reaction to prepare linear formaldehyde-free polymer resin with a triazine ring as a unit structure; the prepared 1, 3-diacrylamido triazine and 1, 3, 5-triacrylamido triazine can perform or participate in free radical polymerization reaction between other unsaturated double bonds to prepare a polymer with a cross-linked structure, and a technical route for preparing an aldehyde-free high-molecular polymer based on melamine is broken through in an application technical method.
Owner:ZHONGKE TESTING TECH SERVICE (CHONGQING) CO LTD +1

Processes for preparing ion-conducting PVB materials and films and associated materials, films, and devices

Processes for forming polyvinyl butyral (PVB) materials, PVB materials such as PVB interlayers, and associated devices and products are disclosed. A process according to some embodiments may include combining polymer resin and one or more plasticizers to form a first combination. The one or more plasticizers may include one or more oxygenated organic compounds that are liquid at about 20 °C. The process may also include combining one or more lithium salts and one or more solvents to form a second combination. The one or more solvents may have a dielectric constant greater than about four (4) and less than about 100 at about 20 °C. The process may also include combining the first combination and the second combination to obtain a material, forming a layer of the material, and exposing the layer to a temperature of about 75 °C to about 150 °C.
Owner:MIRU SMART TECH CORP

Anti-corrosion, anti-fouling and anti-drag composite coating as well as preparation method and application thereof

The invention discloses an anti-corrosion, anti-fouling and anti-drag composite coating as well as a preparation method and application thereof. The anti-corrosion, anti-fouling and anti-drag composite coating comprises a substrate layer, a corrosion blocking layer, a connecting layer and a flexible anti-fouling layer which are sequentially formed on the surface of a base material. Wherein the substrate layer comprises adhesive resin, a positively charged polymer, a filler and a diluent; the corrosion barrier layer comprises flexible polymer resin, a negatively charged polymer and a two-dimensional nanosheet; the connecting layer comprises adhesive resin, a positively charged polymer, a filler and a connecting agent; the flexible anti-fouling layer comprises flexible polymer resin and a temperature-responsive polymer microcapsule encapsulated with an anti-fouling agent. The anti-corrosion, anti-fouling and anti-drag composite coating disclosed by the invention is high in binding force with a base material and also has anti-corrosion, anti-fouling and anti-drag properties; meanwhile, the preparation method provided by the invention has the advantages of wide application range, large-area coating and the like.
Owner:QINGDAO JUGE NEW MATERIAL TECHNOLOGY CO LTD

Composite proton exchange membrane and preparation method thereof

The invention belongs to the technical field of high polymer materials, and particularly relates to a composite proton exchange membrane and a preparation method thereof. According to the prepared composite proton exchange membrane, the perfluorosulfonic acid resin capable of being industrially applied is selected as a base membrane material, and the modified polybenzimidazole polymer resin is added, so that the problem of high ion permeation rate of a perfluorosulfonic acid proton exchange membrane in the prior art is solved; interpenetration and permeation of the electrolyte in the use process of the perfluorosulfonic acid proton exchange membrane can be reduced, cross contamination of positive and negative electrolyte is greatly reduced, and the service life of the electrolyte is prolonged. The PBI is functionalized, so that the proton transmission capacity of the PBI is improved, and the proton exchange membrane formed by blending the functionalized PBI and the perfluorinated sulfonic acid resin can keep excellent vanadium resistance, excellent proton transmission capacity and relatively high ion selectivity at the same time. The preparation process is simple, and the prepared proton exchange membrane can meet the performance and long-term stability use requirements of a flow battery.
Owner:SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD

Biochar marine anticorrosive water-based paint and preparation method thereof

The invention discloses a biochar marine anticorrosive water-based paint and a preparation method thereof. The paint comprises a component A and a component B, the component A is prepared from the following components in parts by mass: 10 to 40 parts of biochar, 24 to 72 parts of waterborne epoxy resin and 0.1 to 0.4 part of dispersing agent; the component B is prepared from the following components in parts by mass: 6 to 18 parts of a curing agent, 0.15 to 0.6 part of a water-based defoaming agent, 0.25 to 1 part of a thickening agent, 0.1 to 0.4 part of a coupling agent and 0.05 to 0.2 part of a drier. According to the coating disclosed by the invention, the microstructure of the biochar is porous, the water-based polymer resin permeates into the pore structures and is interlocked with the biochar, and fine particles of the biochar fill gaps of the substrate coating and reduce the porosity and cracking possibility of the coating, so that the addition of the biochar is economical and environment-friendly, and the porosity of the coating can be reduced; and the corrosion resistance of the coating is improved.
Owner:SOUTHEAST UNIV

Thermal protection systems having ceramic coatings optionally with metal carbide coatings

The present disclosure relates to the formation of thermal protection systems based on the formation of ceramic coatings. Such ceramic coatings may be derived from polymeric resins and may be applied over carbon-carbon (C / C) composites. The ceramic coatings may optionally contain a metal carbide coating.
Owner:BATTELLE MEMORIAL INST

Colored aluminum pigment as well as preparation method and application thereof

The invention discloses a colored aluminum pigment and a preparation method and application thereof.The colored aluminum pigment comprises aluminum paste, a first polymer resin layer, an organic dye layer and a second polymer resin layer, the surface of the aluminum paste is coated with the first polymer resin layer, and the surface of the first polymer resin layer is subjected to acid group modification; the colored aluminum pigment is prepared by the following preparation method: preparing aluminum powder coated with a first polymer resin layer; performing surface modification on the aluminum powder coated with the first polymer resin layer to obtain surface modified aluminum powder; performing air impact coating on organic dye and the surface modified aluminum powder to obtain a colored aluminum pigment substrate; and coating a second polymer resin layer on the surface of the colored aluminum pigment substrate. The aluminum pigment is subjected to multi-layer coating, organic dye and the surface modified aluminum powder are subjected to air impact coating, and the aluminum pigment has excellent aging resistance, is bright in color and is not prone to falling off.
Owner:ZUXING NEW MATERIALS CO LTD

Environment-friendly composite material as well as preparation method and application thereof

The invention discloses an environment-friendly composite material as well as a preparation method and application thereof. The composite material comprises the following components: a high polymer material; modifying plant fibers; a filler; an auxiliary agent; the modified plant fiber is prepared from the following raw materials: plant fiber, an amine compound, a silane coupling agent, titanate and silicon dioxide; the polymer resin comprises at least one of polypropylene, poly (butylene succinate) and polyethylene. The composite material disclosed by the invention is a composite material with high stability and adhesive force.
Owner:ZHONGSHAN SHANGYANG PRECISION IND

Wear-resistant coating for automobile balance shaft gear set and preparation method of wear-resistant coating

The invention discloses a wear-resistant coating for an automobile balance shaft gear set and a preparation method thereof, and the wear-resistant coating comprises the following components by weight: 500-2000 parts of an organic solvent, 300-520 parts of polymer resin, 18-126 parts of a lubricating phase, 0-50 parts of a reinforcing phase, 15-60 parts of an auxiliary agent, and 1-4 parts of a pigment filler. The preparation method comprises the following steps: adding the modified lubricating phase into the organic solvent to prepare a mixed solution, adding the mixed solution and other components into a ball milling tank, and carrying out filtering and vacuum defoaming after ball milling to obtain the high-molecular wear-resistant coating. And spraying the wear-resistant coating on the gear, and carrying out third-order curing to obtain a gear product coated with the macromolecular wear-resistant coating. The wear-resistant coating prepared by the invention has excellent wear resistance and damping characteristic, can buffer the impact force of gear transmission, improves the knocking noise problem in the gear operation process, and improves the NVH performance of the whole gear.
Owner:ZHUZHOU TIMES NEW MATERIAL TECHNOLOGY CO LTD

Polymer resin as well as preparation method and application thereof

The invention discloses a polymer resin and a preparation method and application thereof, the polymer resin has the following structural general formula as shown in the formula I: # imgabs0 #, and n is a positive integer between 1 and 10000; r1 is a group capable of providing hydrogen atoms, and R2 is an aromatic group or a substituted aromatic group. The polymer resin provided by the invention has more groups and atoms with high refractive index; multiple hydrogen-bond interactions with different strengths are generated among a plurality of hydrogen-bond acceptors and hydrogen-bond donors contained in molecules, so that the intermolecular acting force in the polymer resin is enhanced, and the refractive index of the whole polymer resin is further improved and is higher than 1.8. The aromatic group has certain rigidity, and the thioether bond has certain flexibility, so that the structural toughness and machinability of the whole molecule can be improved.
Owner:ZHUHAI MOJIE TECH CO LTD

Dual-curing front-line polymer resin system for repairing fan blade and preparation method of dual-curing front-line polymer resin system

The invention discloses a dual-curing front-line polymer resin system for repairing a fan blade and a preparation method. The dual-curing front-line polymer resin system is prepared from mixed resin and an initiator, the mixed resin comprises the following components in parts by weight: 80-90 parts of epoxy resin, 8-12 parts of polyfunctional acrylate and 2-8 parts of monofunctional acrylate; the initiator comprises a photoinitiator, a photosensitizer and a thermal initiator, and the mass ratio of the photoinitiator to the photosensitizer to the thermal initiator is (4-6): 1: (2-3); according to the dual-curing frontline polymerization resin system disclosed by the invention, through selection of all the raw materials, a form of photo-initiated frontline polymerization can be adopted, reaction heat pushes the movement towards the thickness direction before polymerization while the surface is rapidly cured by ultraviolet light, so that additional heat source equipment is not needed while complete curing of a thick-layer material and a colored system is realized, and the dual-curing frontline polymerization resin system is simple and convenient to operate and green and environment-friendly.
Owner:SINOMA TECH (PINGXIANG) WIND TURBINE BLADE CO LTD

Preparation method and equipment of metal texture colored powder coating

The invention relates to the technical field of powder coatings, and provides a preparation method and equipment of a metal-texture colored powder coating, and the method comprises the following steps: carrying out dispersion treatment on flaky aluminum powder through an alcohol solvent, and then adding a silicon source for hydrolysis reaction, so that the surface of the flaky aluminum powder is coated with a silicon dioxide layer; dispersing the flaky aluminum powder coated with the silicon dioxide layer into water, and adding composite metal salt for co-deposition treatment, so that the surface of the flaky aluminum powder is coated with a composite metal oxide layer; and dispersing the flaky aluminum powder coated with the silicon dioxide layer and the composite metal oxide layer into an organic solvent for polymerization reaction, so that the surface of the composite metal oxide layer is coated to form a polymer resin layer, and the modified aluminum pigment is obtained. The composite metal salt is added for co-deposition treatment, so that the surface of the flaky aluminum powder is coated with the composite metal oxide layer, and the color transition effect can be realized and the color richness can be improved by adjusting the proportional gradient change of various metal salts in the composite metal salt.
Owner:GUANGDONG JUHUA SYNTHETIC MATERIALS CO LTD

A new type of flexible printed circuit board and camera module prepared based on a weldable low-temperature silver paste

The application discloses a novel flexible printed circuit board and camera module prepared based on weldable low-temperature silver paste, and belongs to the technical field of electronic materials and devices. The conductor pattern in the flexible printed circuit board comprises a main circuit pattern and an auxiliary function structure formed by weldable low-temperature cured silver paste. The curing temperature of the weldable low-temperature silver paste is 87-103 DEG C. The silver paste comprises conductive fillers, a polymer resin system, ester solvents, a curing agent, a silane coupling agent, polyamide wax thixotropic agents, polysiloxane defoaming agents, modified carbon nanotubes, modified antimony tin oxide powder, modified ceramic fillers and low-stress modifiers. The polymer resin system comprises hydrogenated bisphenol A type epoxy resin, diphenyl type epoxy resin and polyacrylate-CTBN copolymer. The conductive fillers comprise silver-coated copper flaky powder, nano silver wire and low-temperature alloy powder. Through the synergistic effect of components and the innovative process, the comprehensive improvement of mechanical properties, conductive properties, high-frequency characteristics and welding reliability is realized under the premise of ultralow-temperature curing.
Owner:NANO TOP ELECTRONICS TECH

Curable coating compositions

A coating composition includes: (a) a polymeric resin including hydroxyl functional groups; (b) a polyisocyanate crosslinker; (c) a thiol including at least 2 active hydrogen groups, where the active hydrogen groups include a thiol group or a combination of a thiol and a hydroxyl group; and (d) a tin-based catalyst. The ratio of the number of moles of thiol to the number of moles of tin in the coating composition is less than or equal to 100:1 and the amount of (d) the tin-based catalyst is less than or equal to 0.25% by weight relative to the total resin solids, and / or the ratio of the number of moles of thiol to the number of moles of tin ranges from 3:1 to 50:1 and the amount of (d) the tin-based catalyst is less than or equal to 0.4% by weight relative to the total resin solids.
Owner:PPG INDUSTRIES OHIO INC

Novel anti-ultraviolet heat-insulating transparent composite coating and preparation method thereof

The invention discloses a novel anti-ultraviolet heat-insulating transparent composite coating and a preparation method thereof. The novel anti-ultraviolet heat-insulating transparent composite coating is prepared from macromolecular resin, phenylbenzimidazole sulfonic acid, an infrared absorbent, chitosan, polytetrafluoroethylene, a flatting agent, a defoaming agent, a coalescing agent, a thickening agent and a diluent. The preparation method comprises the following steps: dissolving chitosan powder in a dilute acid solution at 40-60 DEG C, uniformly stirring until the chitosan powder is completely dissolved, adding an infrared absorbent, uniformly stirring, and drying the dilute acid solution to obtain a chitosan-coated infrared absorbent material; and mixing the infrared absorbent material, phenylbenzimidazole sulfonic acid, polymer resin, polytetrafluoroethylene, a flatting agent, a defoaming agent, a coalescing agent and a thickening agent to obtain the composite coating. The heat-insulating composite coating disclosed by the invention not only has an excellent heat-insulating function, but also has an anti-ultraviolet function, and can achieve double effects of heat insulation and ultraviolet prevention when being applied to external coating of automobiles and buildings; in addition, a coating layer formed by the transparent heat-insulating composite coating is high in hardness, strong in adhesive force and excellent in aging resistance.
Owner:NANJING AETINA OPTICS CO LTD