1206 results about "Varnish" patented technology

In a traditional bearing cap, the temperature of the oil-wetted surface that defines the oil sump may experience high temperatures, which can result in oil degradation, oil varnish, and coking. Accordingly, a bearing cap is disclosed that reduces the temperatures experienced by the oil-wetted surface. In particular, the bearing cap may comprise one or more air insulation cavities, between the surface that is exposed to heated air and the oil-wetted surface that defines the oil sump, to provide a thermal barrier between the two surfaces.

The invention relates to the technical field of coatings, in particular to a multifunctional heat-insulation and heat-preservation oily coating, a preparation method and a use method thereof.The multifunctional heat-insulation and heat-preservation oily coating is prepared from, by weight, 5-30 parts of a main agent, 10-30 parts of resin, 5-30 parts of auxiliaries, 10-50 parts of a diluent, 2-20 parts of pigment filler and 7-8 parts of a curing agent, and the ratio of the main agent to the resin is 13: (30-35). Compared with the prior art, by controlling the ratio of the main agent to the resin, the problems that a layer of varnish needs to be coated before construction to increase the interlayer adhesive force and then the heat-insulating coating is coated due to poor adhesive force of the existing heat-insulating coating on the premise of ensuring the heat-insulating property are solved; and after the two steps are completed, a layer of finish paint with a required color needs to be attached, so that the working procedures are complicated, and the manufacturing period is long.

The invention belongs to the technical field of stator processing, and discloses a stator bar less-glue insulation whole immersion process, which comprises the following steps: S1, early-stage preparation; s2, stator bar pretreatment; s3, binding a less-glue mica tape; s4, dipping treatment; s5, curing treatment; s6, cleaning and detecting; the early-stage preparation comprises material selection and equipment inspection and debugging. According to the method, the excellent performance of an insulating layer is guaranteed from the source through the epoxy resin-based solvent-free impregnating varnish with the accurate proportion, secondly, in the link of binding the mica tape with less glue, the binding tightness and uniformity of the mica tape are guaranteed by accurately setting the speed and tension of a numerical control taping machine, the insulation defect caused by poor binding is effectively avoided, and in addition, the service life of the insulating layer is prolonged. Key technical measures such as pressure impregnation, accurate temperature control and pressure maintaining in the impregnation and curing process further promote sufficient permeation of the impregnating varnish and uniform curing of the insulating layer, and the compactness and the electrical performance of the insulating layer are remarkably improved.

The invention belongs to the technical field of coatings, and discloses an anti-yellowing and high-hardness UV (ultraviolet) laminating varnish as well as a preparation method and application thereof. The UV film coating varnish comprises six-functionality alicyclic polyurethane acrylic resin, two-functionality linear polyurethane acrylic resin, pure acrylic resin, an acrylate reactive diluent, a filler, an ultraviolet light absorber, a non-alkaline hindered amine free radical scavenger and a photoinitiator. The weight ratio of the six-functionality alicyclic polyurethane acrylic resin to the two-functionality linear polyurethane acrylic resin to the pure acrylic resin to the acrylate reactive diluent is (2.5-3.5): (1-1.5): 0.5: (2.0-3.0); the bifunctional linear polyurethane acrylic resin is prepared from the following raw materials: isocyanate, poly (1, 4-butanediol) and hydroxyethyl acrylate. A paint film formed by the UV film-coated varnish has good yellowing resistance and high hardness, and is not easy to crack after thermal cycling.

The compound contains an epoxy resin (A), magnetic particles (C), and a curing agent (D). In differential scanning calorimetry of the compound, (X) and (Y) satisfy formula (1) and formula (2), where (X) is a heating vertex temperature of a heat quantity curve at a temperature increase rate of 2°C / min of the compound, and (Y) is a heating vertex temperature of a heat quantity curve at a temperature increase rate of 2°C / min after the compound is pressurized at 200 MPa for 5 minutes. 100 ≤ (X) ≤ 200 … (1) (X) - (Y) ≥ 3 … (2)

According to the preparation method of the radiation refrigeration colored coating with the double-layer structure, absorption of ultraviolet-visible light and near-infrared wave bands is weakened and heat input is reduced by adding a fluorescent coloring agent and designing a bottom strong reflection layer, meanwhile, high-emissivity varnish is selected as a base material, and the radiation refrigeration colored coating with the double-layer structure is prepared. The capability of emitting heat outwards in a middle and far infrared radiation form of the colored paint is improved, so that efficient cooling is realized. The prepared colored paint has rich and adjustable colors and a good cooling effect, is low in cost and simple in process, and is expected to be applied to the fields of high-power electronic equipment, building heat management and the like.

This invention belongs to the field of coating technology and discloses a water-based two-component polyurethane clear varnish and its preparation process. The water-based two-component polyurethane clear varnish includes component A and component B. Component A includes the following raw materials in parts by weight: 85-110 parts of water-based polyurethane dispersion, 40-45 parts of modified acrylic dispersion, 10-25 parts of modified silica, 30-40 parts of modified titanium dioxide, 4-6 parts of dispersant, 0.5-2 parts of defoamer, 0.5-2 parts of leveling agent, and 10-20 parts of water. Component B is a polyisocyanate curing agent. This invention uses water-based polyurethane dispersion and modified acrylic dispersion as film-forming substances, polyisocyanate as curing agent, and adds modified silica and modified titanium dioxide to prepare a water-based two-component polyurethane clear varnish. The modified acrylic dispersion gives the coating film excellent physical properties such as hardness and gloss. The modified silica can improve the hardness and wear resistance of the coating film, and the modified titanium dioxide can improve the thermal stability and flame retardant properties of the material.

A “Passive Radiative Coating” (PRC) is designed to dissipate heat generated mainly by solar radiation, intended for use in the manufacture of overhead conductors and cables. Additionally, this coating can dissipate heat produced by the conductors themselves, known as the Joule effect, providing environmental protection and significantly improving heat dissipation capacity. The PRC is composed of at least one filler, at least one binder, and at least one surfactant. In particular, the use of calcium carbonate and / or barium sulfate as fillers, and epoxy resins, alkyd varnishes, polyurethane dispersions, casting resins, silicone-based varnishes, and sodium silicate as binders are highlighted. The surfactant is used to stabilize the mixture and acts as a stabilization additive.

The invention relates to the field of vacuum paint dipping, in particular to a vacuum paint dipping device for a motor winding and a paint dipping process thereof.The paint dipping process comprises the steps that winding structure parameters of the motor winding and dynamic viscosity data of insulating paint are obtained, and paint dipping initial parameters are determined according to the winding structure parameters and the dynamic viscosity data; the motor winding is vertically placed in a dipping cylinder in the axial direction and pre-dried, the motor winding is naturally cooled after pre-drying is finished, and then vacuum exhaust is conducted on the dipping cylinder; insulating paint is injected after vacuum exhausting is finished, and pressure paint dipping is conducted according to paint dipping initial parameters; monitoring the temperature data of the motor winding in real time to determine the paint dipping leading edge advancing speed of the insulating paint, and adjusting the paint dipping pressure according to the paint dipping leading edge advancing speed; determining a penetration depth characterization value according to the temperature data to adjust the paint dipping pressure and the paint dipping duration; and after pressure paint dipping is finished, the pressure is unloaded, and paint returning, paint dripping, secondary paint returning, low-temperature drying and high-temperature curing are sequentially carried out. According to the invention, the probability of insufficient insulation paint penetration during vacuum paint dipping of the motor winding is reduced.

To provide resin composition particles of a cyclic olefin copolymer having curability.SOLUTION: Resin composition particles include: a thermosetting cyclic olefin copolymer (A) having a crosslinkable group; and a radical initiator (B), the radical initiator (B) being contained within the resin composition particles.SELECTED DRAWING: None

The invention discloses a UV varnish applied to a PVC edge band and a preparation process thereof, and relates to the technical field of paints.The UV varnish comprises, by mass, 15-35% of hydroxyl polyester acrylate, 5-10% of a curing agent, 1-5% of a curing agent, 1-5% of a curing agent, 1-5% of a curing agent, and the balance of water. 15-35% of aliphatic polyurethane resin with 3-4 functional groups; 15-25% of an active monomer; 0.2-0.5% of a wetting dispersant; 0.5-1% of a dispersant; 0.2%-0.5% of a defoaming agent; 0.1 to 0.2 percent of a flatting agent; 0.5%-0.8% of a fluorocarbon modified leveling agent; 3.5 to 5% of a photoinitiator; 0.5%-2.2% of a functional auxiliary agent; 5-15% of a matting agent; and 0.5-1% of nano aluminum oxide. According to the UV varnish, the flexibility reaches grade 1, the adhesive force reaches grade 0, the yellowing resistance E * is 1.0-1.5 (grade 1), and after a cold and hot cycle test, a paint film is free of cracks, bubbles, gloss loss and the like.

Provided is a charge-transporting varnish that provides a charge-transporting thin film having excellent hole injection properties and also has excellent storage stability, the charge-transporting varnish comprising SiO2 nanoparticles surface-treated with a silane coupling agent represented by formula (S1), a charge-transporting substance, and an organic solvent, wherein the residual silane coupling agent has been removed from the charge-transporting varnish. (Rv1 to Rv3 each independently represents a hydrogen atom, a chlorine atom, a hydroxy group, or an alkoxy group or the like which may have a substituent; at least one of Rv1 to Rv3 represents a hydrogen atom, a chlorine atom, a hydroxy group, or an alkoxy group which may have a substituent; L represents a single bond or a C1-10 alkylene group; and Rv4 represents a C1-10 alkyl group which may have at least one kind of substituent selected from halogen atoms or the like. When Rv4 is a C1-10 alkyl group which may have a substituent, L is a single bond.)

The invention discloses a tank body printing ink curing method. The method comprises the following steps that S1, a printing tank body is fixed; s2, rotating the printing tank body; s3, ink spraying: ink is sprayed through a color spray head and a gloss oil spray head which are arranged at the bottom of the printing trolley, and the ink is sprayed on the surface of the printing tank body; s4, ink curing irradiation is conducted, specifically, irradiation is controlled by a curing lamp set in a partitioned mode, and the jet printing ink on the surface of the printing tank is subjected to irradiation curing; s5, curing of the ink in the printing tank is completed, the printing trolley moves in the bus direction of the printing tank, the other surfaces of the printing tank are sprayed with the ink, the printing tank rotates, and the ink sprayed on the surfaces of the curing lamp sets is irradiated and cured until the printing ink on the surfaces of the printing tank is completely cured; according to the method, the gloss oil is sprayed by the gloss oil spray head through the partitioned irradiation of the curing lamp set, and compared with the existing integrated control irradiation of curing lamp beads, the method realizes the gloss oil curing brightness of the surface of the tank body through the partitioned irradiation design of the curing lamp set.

The invention provides corona-resistant polyamide-imide insulating paint and a preparation method and application thereof, the polyamide-imide insulating paint is prepared from the following raw materials: aromatic tricarboxylic anhydride, aromatic diisocyanate and alcoholic hydroxyl group modified silicon dioxide nanoparticles, and the three materials are matched to prepare the corona-resistant polyamide-imide insulating paint. The obtained polyamide-imide insulating paint has excellent storage stability before curing, and after curing, silicon dioxide nanoparticles can be uniformly dispersed in a formed insulating paint film and are not easy to agglomerate; and therefore, the enameled wire prepared from the polyamide-imide insulating paint has excellent corona resistance and excellent flexibility, and is suitable for being applied to a high-voltage motor.

The invention relates to the technical field of automobile parts, in particular to an automobile air-inlet grille highlight sagging-free spraying process which comprises the steps of cleaning, degreasing, drying, dust removal, varnish spraying, drying and detection, UV finish paint spraying, UV curing and product detection. The pre-treatment comprises cleaning, degreasing, drying and dust removal, adhesion of follow-up spraying paint is facilitated, the spraying quality is improved, natural leveling is carried out after a varnish layer is sprayed, the uniformity of a paint surface is improved, a high-gloss wear-resistant paint surface is formed through UV finish paint, and the leveling effect and glossiness of the surface of the paint surface are guaranteed through a release protective film.

The present invention provides a high-transparency matte varnish coating composition that can be used for carbon fiber composite materials, including component A and component B, in parts by weight, component A includes 50-100 parts of self-matting resin, 0-30 parts of hydroxyl resin, 10-35 parts of a first solvent, 0.5-3 parts of an ultraviolet light absorber, 0.5-2 parts of a light stabilizer, and 0.1-3 parts of an additional auxiliary agent; component B includes: 40-90 parts of an isocyanate curing agent, and 10-60 parts of a second solvent; the weight ratio of component A to component B is any ratio between 1:10-20:1. The coating obtained by the coating composition provided by the present invention has the characteristics of high transparency, beautiful appearance, chemical corrosion resistance, scratch resistance, wear resistance and high weather resistance, and the carbon fiber composite material coated therewith can meet the application requirements of automotive exterior parts, etc. The present invention also relates to a preparation method of the above-mentioned high-transparency matte varnish coating composition and a surface treatment method based on the coating composition.

The purpose of the present invention is to provide a method for forming a multilayer coating film which makes it possible to form a multilayer coating film having excellent metallic mottling resistance. The method for forming a multilayer coating film comprises: (1) a step for applying a first aqueous coating material (P1) on an object to be coated to form a first coating film; (2) a step for applying a second aqueous colored coating material (P2) on the first coating film to form a second colored coating film that contains a binder component (AP2) and lustrous pigment (BP2); (3) a step for applying a clear-coat coating material (P3) on the second colored coating film to form a clear-coat coating film; and (4) a step for heating a multilayer coating film that includes the first coating film, the second colored coating film, and the clear-coat coating film so as to cure the multilayer coating film all at once. The first aqueous coating material (P1) contains a compound (A) containing a hydroxyl group and an acid group and that has an acid value of from 50 to 150 mg KOH / g, a hydroxyl value of from 100 to 300 mg KOH / g, and a weight-average molecular weight of from 500 to 8000, a film-forming resin (B), and a crosslinking agent (C).

The invention relates to the technical field of electromagnetic wire insulating layers, in particular to an insulating layer for an electromagnetic wire and a preparation method thereof, and the preparation method comprises the following steps: coating an insulating improved paint on the electromagnetic wire by adopting an enameling machine, and then continuously baking the electromagnetic wire by adopting the enameling machine to complete the preparation of the insulating layer. According to the insulating layer for the electromagnetic wire, the insulating layer is coated with the insulating improved paint through the enameling machine, the insulating improved paint is prepared from the polyimide paint, the xylene solvent, the weather change resistant functional agent and the modified filler, and the raw materials are co-matched, co-assisted and mutually blended to achieve a synergistic effect; the obtained insulating improved paint optimizes the softening breakdown property, wear resistance and pollution resistance of an insulating layer in a system, the performance coordination of a product is improved, and the weather resistance and temperature change resistance stability effects of the product are remarkable.

The invention discloses a method for manufacturing a polyamide-imide high-heat-resistance enameled wire for a new energy automobile, and the method comprises the following steps: 1), carrying out the surface treatment of a conductor, and improving the surface roughness; 2) preparing insulating paint liquid; (3) coating the insulating paint liquid obtained in the step (2) on the surface of the conductor obtained in the step (1) for multiple times; and 4) carrying out sectional stretching treatment to finally obtain the polyamide-imide high-heat-resistance enameled wire. The polyamide-imide resin, the solvent, the epoxy modifier, the nano composite powder, the silane coupling agent and the dicumyl peroxide are compounded to prepare the insulating paint liquid, and the insulating paint liquid is coated on the conductor for multiple times, so that a compact layer can be formed on the conductor, and the insulating paint liquid has the advantages of high heat resistance, high thermal stability, high mechanical property and the like; the extreme requirements of the new energy automobile driving motor on high temperature resistance, high-frequency pulse voltage resistance and refrigerant corrosion resistance of the enameled wire are met, the manufacturing steps are simple, and the enameled wire is suitable for industrial popularization and application.

To provide laminates and PTP packages that offer reduced environmental load and exhibit superior heat resistance, rub resistance, adhesive strength, blocking resistance and rubbing strength.SOLUTION: A laminate includes a metal foil, a first ink layer provided on the metal foil and a varnish layer provided on the first ink layer. As a binder resin component (1) in the first ink layer, a butyral resin is contained. As a binder resin component (2) in the varnish layer, a butyral resin is contained.SELECTED DRAWING: Figure 1

The utility model discloses a stain-resistant color-changing car cover which comprises a PET protective layer, a stain-resistant self-repairing varnish layer, a TPU base film layer, a color-changing layer, a pressure-sensitive adhesive layer and a release protective film layer, and the PET protective layer, the stain-resistant self-repairing varnish layer, the TPU base film layer, the color-changing layer, the pressure-sensitive adhesive layer and the release protective film layer are sequentially stacked. The PET protective layer, the stain-resistant self-repairing varnish layer, the TPU base film layer, the color-changing layer, the pressure-sensitive adhesive layer and the release protective film layer are sequentially stacked, so that the stain-resistant color-changing car cover has the effects of stain resistance, doodling resistance, self-repairing, color changing, heat insulation, explosion prevention and the like, and the individuation and stain resistance of the stain-resistant color-changing car cover are improved; in addition, the PET protective layer and the pressure-sensitive adhesive are torn off after being attached, no adhesive residue exists, maintenance and cleaning are convenient, and therefore the maintenance cost of the stain-resistant color-changing car cover is reduced.

The invention provides colored varnish, a preparation method thereof and a preparation method of a colored workpiece. The colored varnish comprises a component A and a component B, based on 100 parts of the total mass of the component A, the component A comprises the following components: 30-35 parts of first resin, 13-20 parts of second resin, 2-3 parts of nanoscale black pigment, 1-2 parts of a dispersing aid, 3-4 parts of a leveling aid, 2-3 parts of an ultraviolet light absorber, 2-3 parts of a drying aid and 30-47 parts of a solvent, the first resin comprises acrylic resin, and the second resin comprises polyester resin; on the basis that the total mass of the component B is 100 parts, the component B comprises 60-85 parts of aliphatic isocyanate and 15-40 parts of an anhydrous diluent; the mass ratio of the component A to the component B is (2-4): 1. The colored varnish not only has the same color endowing function as colored paint, but also has good leveling property, glossiness, color saturation, tinting strength and weather resistance.

The utility model discloses a high-performance nonlinear buffer which comprises a main body, the whole main body is of a cylindrical structure, and baking varnish is fixedly arranged on the surface of one side of the main body. A buffering mechanism is arranged in the main body, and the buffering mechanism is characterized in that a first hole is formed in the main body in a penetrating mode, a circular-ring-shaped groove is formed in the surface of the main body in an embedded mode, a second hole is formed in the baking varnish in a penetrating mode, and the surface of one end of the main body is of a chamfering structure; and the surface of the main body and the baking varnish are respectively arranged at two ends of the main body. According to the high-performance nonlinear buffer, the buffer mechanism is arranged, the performance of the buffer can be improved, materials in the main body of the buffer are replaced, the materials are more resistant to high speed and high pressure, the comfort and safety of the buffer during use can be improved, the maximum impact mass of the buffer is improved, and the maximum impact mass speed of the buffer is increased; the minimum impact mass is increased, and the practicability of the buffer is improved.

The invention provides a radiation-curable hybrid protective varnish showing good protective effect and durability characteristics.

Provided is a laminate including: a support substrate; a polyimide resin layer on the support substrate; and an inorganic film on the polyimide resin layer, wherein the glass transition temperature of a polyimide resin constituting the polyimide resin layer is 300°C or higher, and the stress of the inorganic film is a compressive stress. Also provided is a laminate manufacturing method including: a step for applying a polyimide resin varnish or a polyimide resin precursor varnish onto a support substrate, and applying heat thereto to obtain a polyimide resin layer; and a step for further forming an inorganic film having a compressive stress on the polyimide resin layer.

The invention provides a two-component varnish composition, a spraying method and a color register finishing coat, and belongs to the technical field of vehicle body spraying, the two-component varnish composition comprises a first main agent and a first curing agent, the weight ratio of the first main agent to the first curing agent is 3.5: 1-4: 1; wherein the first main agent is prepared from the following components in parts by weight: 30 to 39 parts of acrylic resin, 12 to 19 parts of amino resin, 15 to 22 parts of anti-sagging resin, 0.6 to 1.1 parts of an auxiliary agent and 14 to 37 parts of a first solvent; the first curing agent comprises a polyisocyanate curing agent. According to the present invention, by optimizing the ratio of the components in the two-component varnish composition, the adhesion between the paint layers is improved when the two-component varnish composition is used for spraying the vehicle body, such that the polishing on the vehicle body is reduced after the paint spraying is completed, or even the polishing is not performed, the process flow beat is reduced, and the batch production requirement of the vehicle is met.

A manufacturing method and a manufacturing device for manufacturing a winding field rotor in which it is possible to coat the entirety of coil surfaces with varnish, without requiring a complicated operation or action. The manufacturing method for a wound-field rotor involves supplying a varnish material through a gap between the rotor shaft and the flange part on one axial-end side to immerse the coil end part on the one axial-end side at a lower side of the rotor assembly in the varnish material, while rotating the rotor assembly whose axial direction is aligned horizontally.

The invention discloses a weeding composition, a herbicide and application, the weeding composition contains an effective weeding amount of dichloro clomazone and halauxifen-methyl, and the dichloro clomazone and halauxifen-methyl are compounded with each other to achieve a remarkable synergistic interaction effect on prevention and control of euphorbia helioscopia. The control effect is obviously better than the control effect of dichloroclomazone and halauxifen-methyl on euphorbia helioscopia, the control effect can be obviously improved, and the generation of drug resistance is effectively avoided. The bactericidal composition has the advantages that the control effect on euphorbia helioscopia is improved, the crop growth is not influenced, the safety is extremely high, a novel targeted medicament is provided for the control of euphorbia helioscopia, and the bactericidal composition has important practical significance.

The invention discloses a laser etching production process of a signboard. The laser etching production process comprises the following steps: S1) manufacturing a light-transmitting surface shell; s2) spraying primer on the outer surface of the light-transmitting surface shell to form a primer layer; s3) colored paint is sprayed based on the primer layer to form a colored paint layer; s4, the middle ring laser etching area is subjected to laser etching, the laser etching depth is smaller than or equal to the thickness of the colored paint layer, and the laser etching depth gradually changes in a reciprocating mode in the first direction; s5) performing laser etching on the secondary outer ring laser etching area and the secondary inner ring laser etching area until the laser etching depth reaches the outer surface of the light-transmitting surface shell; according to the laser etching method, the colored paint layers which are stacked in multiple layers and gradually changed in color are matched with the gradually-changed laser etching depth, the gradually-changed color effect is achieved, and the layering sense, the stereoscopic impression and the diversity of laser etching patterns are improved.

The invention provides a derivative with a benzophenone structure, a preparation method of the derivative, a photopolymerizable composition and application of the photopolymerizable composition as a photoinitiator. The photoinitiator shows excellent performance in a photopolymerization reaction, and can effectively catalyze the starting of the polymerization reaction especially under the irradiation of ultraviolet light. The compound not only has practical application value as a photoinitiator, but also is widely applied to preparation of various radiation curing materials due to high efficiency. The photoinitiator provided by the invention is suitable for producing, including but not limited to, photoresist, coating compositions, decorative and wear-resistant coatings, varnish, fiber reinforced composite materials, microelectronic packaging materials, plastic substrates, optical fiber coatings, molding materials, UV-cured structural resin and the like. These applications prove versatility and high efficiency of the compounds of formula (I) as photoinitiators.