156 results about "Conformal coating" patented technology

This application discloses a conformal coating detection method, apparatus, electronic device, storage medium, and product, relating to the field of nondestructive testing technology. The disclosed conformal coating detection method includes: obtaining a terahertz reflection signal from a chip under test and generating a time-domain spectrum of the terahertz reflection signal; converting the time-domain spectrum into a frequency-domain spectrum, and constructing an initial transfer function based on the frequency-domain spectrum and a preset reference frequency-domain spectrum, wherein the initial transfer function is the ratio of the frequency-domain spectrum to the reference frequency-domain spectrum; performing a frequency-domain reconstruction operation on the transfer function using a preset autoregressive model to obtain an optimized transfer function; and calculating the characteristics of the conformal coating of the chip under test based on the optimized transfer function. This application can ensure high-precision measurement of conformal coatings.

A coated optical component includes an optical component and a conformal coating. The optical component is crystalline calcium fluoride and the conformal coating is an atomic layer deposition (ALD) coating in contact with a surface of the optical component. The ALD coating includes a metal fluoride ALD coating having a metal different from calcium. The ALD coating can include other metal oxide or metalloid oxide ALD coating layers. The method for making the coated optical component includes depositing an atomic layer deposition (ALD) coating on a surface of the optical component, where the ALD coating can be a metalloid oxide, a metal oxide, a metal fluoride having a metal that is different from calcium, or combinations of these. Sulfur hexafluoride is used as a fluorine source in the ALD process.

The invention relates to the technical field of polyurethane, and discloses a preparation method of UV-moisture multi-cured polyurethane modified acrylate conformal coating, which comprises the following steps: mixing 100 parts by weight of polyurethane modified acrylate, 12-18 parts by weight of tertiary amine diacrylate diluent, 0.5-1 part by weight of thickener, 3.3-3.8 parts by weight of photoinitiator and the like; the UV-moisture multiple curing polyurethane modified acrylate conformal coating is obtained. Active chlorine atoms are introduced into the end position of polyurethane modified acrylate and can be subjected to quaternization reaction with tertiary amine groups of a tertiary amine diacrylate diluent, so that antibacterial quaternary ammonium salt groups are introduced, and the polyurethane paint is endowed with excellent antibacterial and bactericidal properties. Polyurethane modified acrylate has multiple crosslinking effects such as moisture curing, light curing crosslinking and hydrogen bond crosslinking at the same time, so that the polyurethane adhesive film shows higher tensile strength and elongation at break. And the paint has good water resistance and salt spray resistance.

The invention relates to the technical field of quality detection of printed circuit boards, in particular to a PCB warping degree detection method and system, and the method comprises the following steps: applying first transient thermal excitation to a printed circuit board before the shape-preserving coating of the printed circuit board, and collecting a first thermal response process of the surface of the printed circuit board as first thermal characteristic data; after conformal coating and curing of the printed circuit board are completed, second transient thermal excitation identical to the first transient thermal excitation is applied to the printed circuit board, and a second thermal response process on the surface of the printed circuit board is collected to serve as second thermal characteristic data; the internal stress is represented by comparing the thermal response difference before and after coating, and the method has the advantages that the internal stress of the printed circuit board after conformal coating can be effectively represented, and the problem that an existing optical measurement method is interfered by a transparent coating is solved.

The invention discloses a lining high-vacuum regulating valve, which comprises a valve body and a valve rod arranged in the valve body, and further comprises a valve core connected with the valve rod and a valve cover provided with a stuffing box, and is characterized in that the inner surface of the valve body is coated with a first lining layer, and the first lining layer and the valve body form a conformal coating structure through a thermal forming process; the outer surface of the valve element is coated with a second lining layer, and the second lining layer and the valve element form a common coating structure through the thermal forming technology. Through the means of combining a high-temperature mold pressing injection molding process and a dovetail groove rivet composite structure, the industrial problems of stripping deformation of a lining material and a metal valve body and medium leakage under the high-vacuum working condition are solved, and the structural stability of the lining layer under the extreme negative pressure and the zero leakage effect of gas-liquid media are obtained; and the equipment reliability and environmental safety of vacuum distillation, negative pressure reaction and other processes in the fields of chemical industry, pharmacy and the like are remarkably improved.

Aspects of the disclosure include an implantable composition / medical device encapsulating insulin-producing cells for use in the treatment and management of diabetes, generally comprising a multilayer lattice structure fabricated from a continuously bioprinted cell-laden core / shell fiber, the lattice structure having a defined infill density and at least coating applied to the lattice post-printing, and preferably at least one conformal coating. In this way, multilayer lattice structures are provided with improved stability, retrievability, and functionality.

The present invention discloses a method for evaluating the anti-sulfidation corrosion performance of conformal coating materials, which belongs to the field of test and evaluation technology. The evaluation method includes the following steps: covering the first metal foil and the second metal foil on the same side surface of the test substrate under the same conditions, the first metal foil and the second metal foil are equal and spaced apart from each other; coating the surface of the first metal foil with conformal coating, and not coating the surface of the second metal foil with conformal coating; then, performing a sulfidation corrosion test on the sample substrate according to the preset sulfidation corrosion test method and test conditions; after the test is completed, evaluating the anti-sulfidation corrosion performance of the conformal coating material based on the blackened area of ​​the first metal foil and the second metal foil; the evaluation standard is: if the blackened area of ​​the first metal foil is smaller than the blackened area of ​​the second metal foil, it indicates that the conformal coating has an anti-sulfidation corrosion effect. This method can effectively qualitatively and quantitatively evaluate the anti-sulfidation corrosion performance of the conformal coating.

Disclosed herein is a ceramic particle comprising a core substrate chosen from yttria-stabilized zirconia, partially stabilized zirconia, zirconium oxide, aluminum nitride, silicon nitride, silicon carbide, and cerium oxide, and a conformal coating of a sintering aid film having a thickness of less than three nanometers and covering the core substrate, and methods for producing the ceramic particle.

The present invention belongs to the technical field of circuit board spraying, and in particular to a spraying device for circuit board conformal coating, comprising a workbench and two symmetrically arranged bases, the workbench being fixedly mounted on the top ends of the two bases, the outer walls on both sides of the top of the workbench being fixedly connected to symmetrically arranged support rods, the outer walls of the four support rods being slidably connected to guide blocks, the outer walls on one side of the four guide blocks being fixedly connected to the same mounting plate, the outer wall on one side of the bottom of the mounting plate being fixedly connected to a first fixing bracket, the bottom end of the first fixing bracket being fixedly connected to a first positioning block, and two second fixing brackets being fixedly mounted on the side of the bottom of the mounting plate away from the first fixing bracket; the present invention can position circuit boards of two different lengths, facilitates the spraying of conformal coating on circuit boards of two different lengths, has good applicability, and can reuse spilled conformal coating, thereby reducing the waste of resources.

Various embodiments and examples of conformal coatings formed by various formulations and curing methods are disclosed herein. In one embodiment, a resin capable of thiol-ene polymerization is used. In another embodiment, a reactive acrylic liquid elastomer is used. In yet another embodiment, an epoxy resin is used in combination with other chemicals to produce physical properties useful for conformal coatings.

A composite material includes a polymer substrate having a microporous structure and a conformal coating disposed on a surface of the polymer substrate, wherein the conformal coating is formed from sintered metal nanoparticles.

A coating composition comprising at least one film forming component including a water-based carrier, a resin and at least one additive where the coating composition does not contain a high volatile organic compound (VOC) content and the resin is present in an amount sufficient and configured to form a conformal film when applied to a substrate at room temperature is disclosed. A conformal coating, a method of making the coating composition, a method of using the coating composition to protect substrates such as electronic devices including printed circuit board assemblies (PCBAs), from unwanted contaminants. Substrates coated with such conformal coatings are also disclosed.

This utility model discloses a coating equipment for drone parts that incorporates vacuum adsorption, relating to the field of drone manufacturing technology. It aims to solve the technical problem that current conformal coating machines are inconvenient for vacuum adsorption and fixation of drone body shells of different sizes. The equipment includes a coating machine body. This utility model uses springs to equidistantly arrange several sets of adsorption and fixing tubes on a rectangular platform frame. A fastening base is arranged at the bottom of each adsorption and fixing tube. A fastening frame is slidably arranged at the bottom of the rectangular platform frame. Therefore, when the coating machine body is coating the drone body shell, the operator can directly place the drone body shell onto the adsorption and fixing tubes on the rectangular platform. The operator can then press down on the drone body shell, which will simultaneously press down the adsorption and fixing tubes in contact with its bottom edge. The fastening frame and fastening base then secure the pressed adsorption and fixing tubes.

The present invention relates to the technical field of photoresist coating for wafer-level packaging, specifically a resonant cavity structure and coating method for fine atomization, comprising a resonant cavity, a spherical resonant cavity disposed within the resonant cavity, the diameter of the spherical resonant cavity being an integral multiple of half the wavelength of ultrasonic excitation, an opening for ultrasonic excitation input disposed at the top of the resonant cavity, and an acoustic resonance cavity disposed at the bottom of the resonant cavity; a liquid supply needle is inserted into the acoustic resonance cavity from the resonant cavity. This structure and method can improve the uniformity of photoresist spraying and the quality of the film layer. By utilizing precise acoustic field control, no microchannel is required to provide fluid flow, thus avoiding the potential problem of nozzle blockage. By focusing the acoustic wave in the resonant cavity, the droplets will break up in a very short time, resulting in a small atomized particle size and high concentration, thereby achieving uniform and controllable photoresist film thickness. The film layer has high uniformity and few film defects, is not restricted by the wafer surface morphology, and can achieve conformal coating of complex three-dimensional microstructures.

A method for vacuum gap formation on a dielectric substrate uses area selective deposition (ASD), such as atomic layer deposition (ALD) or chemical vapor deposition (CVD), of a hardmask material on a substrate patterned with a self-assembled monolayer (SAM) and metal features. Due to the presence of the SAM, the hardmask material reaches, but does not touch the metal features leaving areas that will form gaps on the resultant hardmask when the SAM is removed from the substrate. Etching of the dielectric substrate forms trenches in the areas of the gaps. When a non-conformal coating is deposited on the dielectric substrate, vacuum gaps form in the trenches as the non-conformal coating enters into the trenches, but closes off at the surface of the substrate prior to the complete filling of the trench.

The invention discloses a graphene conformal fitting-oriented patterned paper-cut structure and a design method thereof. The design method comprises the following steps: S1, simulating adhesion deformation of a graphene film on the surface of a target substrate with a non-zero Gaussian curvature by adopting a full-atom molecular dynamics method; s2, extracting atomic distribution of an adhesion fitting configuration according to a simulation result of the step S1, and quantitatively calculating the adhesion conformal degree of the graphene film; and S3, designing paper-cut cutting patterns of various graphene films, repeating the steps S1 to S2 until the designed paper-cut cutting patterns reach the target adhesion conformal degree, and taking the patterns as the final patterned paper-cut structure for graphene conformal lamination. According to the method, on the premise that the overall continuity of the graphene is not remarkably damaged, highly conformal attachment of the graphene on a spherical surface and other non-zero Gaussian curvature substrates can be achieved, and therefore the adhesiveness and stability of the film and the substrates are remarkably improved.

The invention relates to the technical field of coatings, in particular to dual-curing conformal coating as well as a preparation method and application thereof. The dual-curing three-proofing paint is composed of siloxane containing oxazolidinyl groups, a UV oligomer containing isocyanate groups, a diluting monomer, a water removal agent, a photoinitiator, a wetting agent, a catalyst and the like. Wherein the siloxane containing the oxazolidinyl group has two functional groups of long carbon chain oxazolidine and siloxane, the long carbon chain oxazolidine can realize rapid moisture curing of oligomer and does not generate volatile harmful substances, and meanwhile, hydrolysis residues of the long carbon chain oxazolidine can plasticize the conformal coating and reduce adhesion loss caused by shrinkage. On the other hand, siloxane groups can form a stronger physical or chemical action with a base material, so that the adhesive force to the base material is improved. In conclusion, the three-proofing paint has excellent low surface tension and high wettability, can effectively wet the polluted surface of the PCB and form interaction, has the characteristics of excellent adhesive force, salt mist resistance, high flexibility and the like, and has very high market application value.

Moisture-curing coating compositions, processes for making the same and uses for the same. The composition includes a Component (A) of one or more linear hydroxyl terminated organopolysiloxanes, a Component (B) of one or more organopolysiloxane resins, a Component (C) of one or more organosilicates, a Component (C) of one or more organosilicates, a Component (D) of one or more alkoxysilanes having at least one tertiary amino group, a Component (E) of one or more alkoxysilanes having at least one primary or secondary amino group and a Component (F) of one or more UV-fluorescent pigments. Where the one or more alkoxysilanes having at least one tertiary amino groups (D) have the following general formula (IV) R3R4N—(CR52)—Si(R2)3-x(OR1)x.

A method for vacuum gap formation on a dielectric substrate uses area selective deposition (ASD), such as atomic layer deposition (ALD) or chemical vapor deposition (CVD), of a hardmask material on a substrate patterned with a self-assembled monolayer (SAM) and metal features. Due to the presence of the SAM, the hardmask material reaches, but does not touch the metal features leaving areas that will form gaps on the resultant hardmask when the SAM is removed from the substrate. Etching of the dielectric substrate forms trenches in the areas of the gaps. When a non-conformal coating is deposited on the dielectric substrate, vacuum gaps form in the trenches as the non-conformal coating enters into the trenches, but closes off at the surface of the substrate prior to the complete filling of the trench.

A pellicle assembly includes a pellicle membrane with a nanotube layer formed from thick nanotube bundles. The pellicle membrane can be formed with multiple layers and has a combination of long lifetime, high transmittance, low deflection, and small pore size. A conformal coating may applied to an outer surface of the pellicle membrane. The conformal coating protects the pellicle membrane from damage that can occur due to heat and hydrogen plasma created during EUV exposure.

A pellicle assembly includes a pellicle membrane with a nanotube layer formed from thick nanotube bundles. The pellicle membrane can be formed with multiple layers and has a combination of long lifetime, high transmittance, low deflection, and small pore size. A conformal coating may applied to an outer surface of the pellicle membrane. The conformal coating protects the pellicle membrane from damage that can occur due to heat and hydrogen plasma created during EUV exposure.

Provided is a silicone and filler composition comprising: (A) an organopolysiloxane; (B) a filler; and (C) a filler treating agent represented by the following general formula (I) : MDxUyM' (I) A process for treating fillers, use of said filler treating agent (C) in treating fillers, as well as an encapsulant, a sealant, a conformal coating and / or a thermal interface material obtained from said silicone and filler composition are also provided.

A structure comprising a preferably high-resistivity substrate comprising a superconducting vertical interconnect SVI (100) extending through the substrate (101) from a first side (101a) to a second side (101b) of the substrate (101), the second side (101b) being opposite to the first side (101a), said SVI (100) comprising: a first interconnect portion (103) extending from the first side (101a) into the substrate (101) without reaching the second side (101b) of the substrate (101), a plurality of second interconnect portions (104) extending from the second side (101b) to the first interconnect portion (103) thus joining with the first interconnect portion (103), a superconducting conformal coating (105) covering at least sidewalls (103a) of the first interconnect portion (103) and at least a portion of sidewalls (104a) of the plurality of second interconnect portions (104a), and a continuous superconducting path from the first side (101a) to the second side (101b) of the substrate (101), said path at least partially formed by the conformal coating (105). The disclosure further relates to a method of forming a superconducting vertical interconnect.

The present invention belongs to the technical field of paint coatings and specifically relates to a toughened UV moisture dual-curing conformal coating and a preparation method thereof. The conformal coating comprises the following raw material components in weight percentage: 39-84 wt% of tricyclodecane dimethanol diacrylate, 13-45 wt% of a bifunctional polyurethane acrylate resin containing acryloyl and isocyanate groups, 2-10 wt% of a toughening modifier, and 1-6 wt% of a photoinitiator, based on the total raw material amount. The toughening modifier is selected from at least one of bisacryloyloxy-modified polyisobutylene, diene-containing EPDM rubber, carboxyl-terminated liquid nitrile rubber, and vinyl-terminated nitrile rubber. The conformal coating of the present invention is resistant to cracking when subjected to external forces and has excellent adhesion, significantly reducing problems such as wrinkling, cracking, and insufficient adhesion caused by system shrinkage. It also has high tensile strength and low water vapor transmission.

The present disclosure provides a composite comprising: (a) a core of soft-magnetic alloy particles; and (b) an electrically insulating magnetically active shell, wherein the shell forms a conformal coating on the core particles; the alloy particles comprise at least two elements selected from iron, niobium, copper, silicon, boron, cobalt, manganese, chromium, rare earth metals, or combinations thereof; and the shell comprises oxides of metals selected from Mg, Ni, Zn, Cu, Co, Mn, Cr, Ti, Fe, Sr, Ba, or rare earth metals. The present disclosure provides an inductor core comprising at least one strip of the composite as disclosed herein. The present disclosure further provides an inductor comprising at least one inductor core as disclosed herein.

A radiation shielding material for use in spacecraft comprises boron carbide particles dispersed in an epoxy matrix. In one aspect, the material is formed into modular panels attachable to satellite structures for attenuation of neutron and charged particle radiation. In another aspect, the boron carbide epoxy mixture is applied as a conformal coating to satellite components and cured in place to provide localized shielding. The composite may also be used to pot electronic components within a protective volume. The method of fabrication includes mixing boron carbide with epoxy resin and hardener, stirring until homogeneous, and curing the mixture to form a solid shielding structure. The system provides effective radiation mitigation with reduced weight and form factor compared to traditional metal or high-density polymer shields, and is compatible with aerospace integration and environmental requirements.

Discussed is an optical communication device that can include a first optical element, a second optical element configured to perform optical communication with the first optical element, a printed circuit board (PCB) where the first optical element and the second optical element are arranged, and a first conformal coating layer of a first polymer material, the first conformal coating layer being coated onto at least a part of a surface of the PCB, in which the optical communication is performed using the first conformal coating layer as an optical waveguide.

Coated substrate including coatings including a first layer that includes a conformal coating, an intermediary layer that includes an adhesion promoter formed on the first layer, and an outer omniphobic layer that includes a fluoroalkyl group formed on the intermediary layer, are provided herein. Methods of condensing liquids having surface tensions of from about 10 mN / m to about 72 mN / m on the coated substrate are further provided. Methods of forming coated substrates are further provided.

A micro-electromechanical (MEMS) component may comprise a glass substrate, a MEMS device disposed on the glass substrate, and a glass cap disposed on the glass substrate. The glass cap may have at least one electrically conductive via therethrough, comprising a cylindrical void traversing the glass cap from a top surface of the glass cap to a bottom surface of the glass cap, and a metal conformal coating disposed on an interior sidewall of the cylindrical void. The metal conformal coating may have a top end and a bottom end. A flexible composite material may be disposed in the cylindrical void from the top surface of the glass cap to the bottom surface of the glass cap. A top planar cap may be coupled to the top end of the metal conformal coating, and a bottom planar cap may be coupled to the bottom end of the metal conformal coating.

The invention discloses a UV moisture-cured three-proofing paint composition with low odor after curing and a preparation method of the UV moisture-cured three-proofing paint composition. The cured low-odor UV moisture curing three-proofing paint composition is prepared from the following components in parts by mass: 50 to 70 parts of bifunctional aliphatic urethane acrylate resin, 10 to 30 parts of cyclic trimethylolpropane formal acrylate, 10 to 30 parts of isobornyl methacrylate and 5 to 10 parts of a photoinitiator. According to the application, low-odor monomers such as cyclic trimethylolpropane formal acrylate and isobornyl methacrylate are added to replace irritant monomers, so that the problem of strong odor of the conformal coating is greatly reduced; by adding the macromolecular photoinitiator, the problem that the residual initiator on the paint film volatilizes due to heating to generate odor is solved, and the problem that the odor volatilizes due to the influence of temperature even if the residual initiator exists due to the fact that the photoinitiator is macromolecular is solved.