34results about How to "Strong resistance to yellowing" patented technology

The invention relates to a low driving voltage dimming film and a preparation method thereof. The preparation method comprises the steps of mixing acrylate, an acrylic monomer, a surfactant and a photoinitiator in a ratio to prepare UV (Ultraviolet) optical cement, mixing the UV optical cement with liquid crystal uniformly, adding 0.1-0.8% of spacer and mixing to prepare PDLC (Polymer Dispersed Liquid Crystal); and sandwiching the PDLC between two transparent conductive films, rolling to form a liquid crystal film, and curing the liquid crystal film by heating or with ultraviolet light, thus forming the dimming film. The obtained low voltage dimming film has the working voltage of 24/36 V and the lower power consumption of 0.5-1.5 W/m<2>, simultaneously has excellent photoelectric performance, and is suitable for metro shielding doors, bathroom partitions, bank partitions and the like.

The invention discloses an anti-yellowing water based coating agent. The anti-yellowing water based coating agent is prepared by the matching of the following components by weight: 90-97 parts of an acrylic ester modified polyurethane water solution, 0.5-1 part of a nanometer ZnO, 0.5-1 part of a flatting agent, 0.5-2 part(s) of a cross-linking agent, and 0.5-2 part(s) of a thickening agent. The anti-yellowing water based coating agent has the advantages of aquosity and environmental protection, non-pollution and the like, belongs to a resource-saving product, is low in cost, meanwhile can be mixed with other raw materials, and is an ideal coating adhesive product.

The invention discloses a self-repairing yellowing-resistant paint surface protective film and a preparation method thereof. The paint surface protective film is sequentially composed of a release film layer I, a pressure-sensitive adhesive layer, a TPU base material, a self-repairing coating and a release film layer II from bottom to top. The self-repairing coating is made of thermocuring functional polyurethane acrylate resin and comprises 20-50% of functional monomer modified acrylic resin, 10-30% of polymer polyol, 40-60% of a diluting solvent, 10-20% of a curing agent, 0.2-0.5% of a catalyst and 0.5-2% of an auxiliary agent, the TPU base material is optical-grade aliphatic TPU, the pressure-sensitive adhesive is an acrylate adhesive, and the release film layer is a PET silicone oil release film. The paint surface protective film prepared by the invention not only has excellent yellowing resistance and self-repairing performance, but also has high transparency, high glossiness, excellent scratch resistance, acid and alkali resistance, rain spot resistance and the like, so that the self-repairing yellowing-resistant paint surface protective film is suitable for the fields of automobile, furniture films and the like.

The invention relates to the coating application technology, in particular to a high gloss white UV (Ultra Violet) coating application technology. The gloss white UV coating application technology comprises the following steps of hair sanding; roller coating UV priming paint; roller coating pure white UV priming paint; roller coating sanding UV priming paint; sanding and dedusting; shower coating transparent UV priming paint; moistening before shower coating; shower coating pure white highlight UV finishing paint; coating a film after drying. The application technology is dispense with spray coating, has no paint mists and is in batch production; since UV white paint is utilized for shower coating the surface of a plate, the color is very uniform, and the adhesive force is strong; most important is that transparent gloss paint is not used on the surface, so that the coating has strong resistance to yellowing, is non-discolouring basically, and has the grade of fifth level.

The invention discloses a modified glass microsphere and a preparation method thereof and a method for preparing a composite resin product by using the modified glass microsphere. The modified glass microsphere includes a first class glass microsphere and a second class glass microsphere, a discontinuous metal layer and an ultraviolet absorbent wrap the surface of the first class glass microsphere, a hydrophobic material wraps the surface of the second class glass microphere, the coverage rate of the metal layer on the surface of the first glass microsphere is 45.0%-85.0%, and the modified glass microbead is added into the component of a common anti-yellowing product to improve the anti-yellowing property and the mechanical property of the product.

The invention provides a thermocuring self-repairing type paint surface protective film and a preparation method thereof. The paint surface protective film is sequentially composed of a release film layer A, a pressure-sensitive adhesive layer, a base material layer, a self-repairing coating and a release film layer B from bottom to top. The self-repairing coating is made of self-repairing thermocuring type modified polyurethane acrylate resin and comprises 10-18% of functionalized acrylic resin I, 10-18% of functionalized acrylic resin II, 12-35% of polymer polyol, 30-50% of a solvent, 15-30% of a curing agent, 0.05-0.2% of a catalyst and 0.3-1.0% of auxiliaries, and the base material is made of optical-grade aliphatic TPU, the pressure-sensitive adhesive is an acrylate adhesive, and the release film layer is a PET silicone oil release film. The paint surface protective film is simple in preparation process and easy for industrial batch production, the self-repairing coating has excellent scratch resistance, self-repairing performance, aging resistance, corrosion resistance, pollution resistance and the like after being thermally cured, and the self-repairing paint surface protective film can be widely applied to the fields of automobile and furniture paint surface protection, electronic equipment screen protection and the like.

The invention relates to a double-component polyurea sealant. The double-component polyurea sealant comprises a component A and a component B. The component A comprises polyaspartic acid ester polyurea, fumed silica, lime powder, a leveling agent, a dispersing agent, an accelerant and matte powder. The component B comprises curing agent isocyanate, epoxy resin, a defoaming agent, a wetting agent and pigment. The invention has the following beneficial effects: the sealant is formed by compounding polyaspartic acid ester polyurea, a curing agent isocyanate, epoxy resin and a plurality of reinforcing agents, has strong yellowing resistance, reduces heated volatilization deformation, is firm in connection, strong in adhesive force, water-resistant and high in adhesive force, and is not easily influenced by construction conditions.

The invention discloses addition-type molded silicone rubber for an LED bracket material and a preparation method and application of the addition-type molded silicone rubber. The addition-type moldedsilicone rubber is prepared from, by mass, 10-90 parts of phenylvinyl silicone resin, 10-80 parts of phenyl hydrogen-containing silicone resin, 5-30 PPM of a sulfurization catalyst, 10-80 parts of a thermal conductive additive, 1-60 parts of a light reflection additive, 0-10 parts of magnesium oxide and 5-30 PPM of an inhibitor. The components of the addition-type molded silicone rubber are uniformly dispersed, the addition-type molded silicone rubber has excellent optical properties and elasticity after solidification molding, the structure is stable, the airtightness is good, the rubber doesnot absorb water, the yellowing resistance is high, the preparation method of the rubber can effectively ensure the stability of the related performance of the prepared addition-type molded siliconerubber and the stability of the working performance of devices packaged by the addition-type molded silicone rubber, and the service life of the corresponding device is prolonged.

The invention belongs to the technical field of anti-wear and anti-scratching processing of the surface of a plastic product and particularly relates to an anti-yellowing UV (ultraviolet) varnish. The anti-yellowing UV varnish is characterized in that the anti-yellowing UV varnish comprises the following components in percentage by weight: 50-80% of aliphatic polyurethane hex-acrylate, 15-30% of butyl acrylate, 0-15% of dipropylene glycol diacrylate, 1-4% of 2-hydroxyl-2-methyl-1-phenylacetone and 1-4% of 1-hydroxycyclohexyl phenyl ketone. The anti-yellowing UV varnish has good anti-yellowing performance and coating flexibility and is particularly suitable for use in anti-wear and anti-scratching processing of a plastic hose.

The present invention discloses anti-oxidation heat-dissipation paint. The anti-oxidation heat-dissipation paint consists of the following raw materials in parts by weight: 0.3-1 part of 2,6-di-t-butyl-4-methylphenol, 2-3 parts of aluminum sulfate ammonium, 4-6 parts of butyl benzyl phthalate, 12-15 parts of styrene-maleic anhydride copolymer, 6-10 parts of propargyl alcohol, 90-100 parts of tetrahydrofuran, 4-7 parts of graphene, 16-20 parts of nano silica dioxide, 0.2-0.3 part of a silane coupling agent KH560, 700-800 parts of dimethyl formamide, 4-5 parts of sodium nitride, 0.04-0.05 parts of aluminium trichloride, 1.6-2 parts of a 2-3% sodium ascorbate solution, 1.8-2 parts of a 2-3% copper sulphate solution, 120-130 parts of high-density polyethylene, 2-3 parts of calcium lactate, 0.3-1 part of sodium diacetate, 3-5 parts of sodium potassium silicate, and 0.8-1 part of glyceryl monostearate. The paint provided by the present invention is excellent in oxidation resistance, high in yellowing resistance, not liable to aging, high in peeling resistance, and superior in comprehensive performance.

The invention discloses an anti-yellowing priming paint which consists of the following components in parts by weight: 40-50 parts of acrylic resin, 10-15 parts of pentachlorodiphenyl, 10-15 parts of flax oil, 5-10 parts of titanium dioxide, 20-25 parts of a filling material, 1-2 parts of bentonite, 1-5 parts of an auxiliary and 1-15 parts of a solvent. The provided anti-yellowing priming paint has extremely strong anti-yellowing capability, and the anti-yellowing performance is obviously superior to that of the conventional priming paint product, so that the quality of the product using the provided priming paint is improved, and the provided priming paint has a wide market prospect.

The invention discloses a coating material of a silicone rubber magnetic core and a coating method thereof. A ferrite magnetic core is used in coils and transformers of various electronic devices. Traditionally, a surface of a magnetic core needs to be coated with an insulating coating made of an epoxy resin material, compared with the prior art, the coating material is advantaged in that the magnetic core made of silica gel is good in chemical stability, free of influence of cold and hot impact, high in toughness, high in insulativity, resistant to corrosion, simple in production process, high in yellowing resistance and environmentally friendly, automatic large-batch production can be realized, the voltage resistance, corrosion resistance and aging resistance of electronic equipment andtransformers are greatly improved, reliability and stability of products in severe environments such as high temperature, high pressure, high and low temperature impact, salt mist and high temperatureand high humidity are particularly improved, meanwhile, the process has large-batch automatic production capacity, and consistency of products is greatly improved.

The invention discloses a ceramic tile seam beautifying curing agent low-cost system seam beautifying agent which comprises a component A and a component B, and the ratio of the component A to the component B is 1:1. The component A comprises resin, silicate, carbon nanospheres, glyceryl acrylate and an auxiliary agent; the component B comprises a modified curing agent, an accelerant, a thixotropic agent, a pigment and a coupling agent; the component A comprises the following raw materials in parts by weight: 20-30 parts of resin, 20-30 parts of silicate, 10-15 parts of the carbon nanospheres,2-10 parts of glyceryl acrylate and 5-20 parts of the auxiliary agent; the component B comprises the following raw materials in parts by weight: 30-40 parts of the modified curing agent, 2-10 parts of the accelerant, 3-8 parts of the thixotropic agent, 6-10 parts of the pigment and 0-10 parts of the coupling agent. The ceramic tile seam beautifying curing agent low-cost system seam beautifying agent has the advantages of various types, water resistance, oil resistance, easiness in cleaning, friction resistance, high strength, high brightness, difficulty in mildewing and the like.

The invention discloses a packaging paper card UV ink printing curing and drying device. The device comprises a driving device, a plurality of cover mechanisms, a UV lamp and an adjusting device, the driving device is provided with the cover mechanisms, the driving device drives the cover mechanisms to pass through the positions below the UV lamp and the adjusting device, and when the cover mechanisms pass through the position below the adjusting device, the cover mechanisms are forced by the adjusting device to move downwards to cover printed packaging paper cards on which ink is to be cured and dried; and compared with the prior art, the drying and curing efficiency can be improved, and the energy consumption is reduced.

The invention relates to a production process of a color-changeable stain-resistant leather mobile phone rear cover and relates to the technical field of mobile phone decoration and explosion prevention. The production process comprises the following steps that 1, embossed paper or an embossed film with leather texture is coated with a coating, a thermochromic material or a photochromic material or color sizing or color paste which is different in color and is fused with each other is added into the coating, then drying, curing and shaping are carried out, and a leather layer with the embossed paper or the embossed film is obtained; 2, the surface of the leather layer is coated with acrylic adhesive or silica gel or pressure-sensitive adhesive so as to form an adhesive layer on the leather layer; 3, a layer of a release film is attached to the adhesive layer; 4, the embossed paper or the embossed film is torn off, and the other surface of the leather layer is coated with a stain-resistant coating so as to form a stain-resistant layer on the other surface of the leather layer; and 5, the release film is stripped, and the adhesive layer is attached to the mobile phone rear cover layer to obtain the color-changeable stain-resistant leather mobile phone rear cover. By means of the production process, the functionality and aesthetic property of the mobile phone rear cover can be improved.

The preparation process for improving the reflectivity of the Mini-LED lamp panel comprises the following steps: carrying out a surface treatment process on a substrate of the Mini-LED lamp panel, and then carrying out oil boiling and first standing treatment; s2, printing the substrate formed in the step S1, and continuing to perform second standing treatment after the printing treatment is finished; s2, performing pre-baking treatment on the substrate formed in the step S2, sequentially performing cooling and exposure after the pre-baking is finished, and continuing third standing treatment after the exposure is finished; performing development operation on the substrate formed in the step S3; performing thermocuring treatment on the substrate formed in the step S4; carrying out character silk-screen operation on the substrate formed in the step S5; according to the technology, the lateral erosion rate is smaller than 40%, the reflectivity reaches 88% or above, the manufactured backlight face can evenly reflect the luminosity of a backlight source, the reflectivity of light emitted by the reflecting lamp beads is higher, and the brightness value and the contrast value of the whole screen can be higher.