68results about How to "Improve anti-yellowing" patented technology

The invention discloses a high weather-proof and corrosion-resistant powder paint for a satellite earth antenna. The paint comprises, by weight, 100-150 parts of polyester resin, 20-40 parts of GMA acrylic resin, 0-5 parts of beta-hydroxyalkylamide, 0-10 parts of assistants, 0-100 parts of paddings and 0-3 parts of pigments. The invention further discloses a preparation method for the powder paint. A coating after being coated by the paint and curing is good in mechanical properties, super-weather-proof, salt mist resistant, and provided with stable low gloss area.

The invention belongs to the technical field of unsaturated polyester resin, and particularly relates to a mono-acid blocked unsaturated polyester resin, formed by using dibasic alcohol, saturated dibasic acid, unsaturated dibasic acid, a monobasic acid blocking agent and a diluting agent as raw materials, and then performing condensation polymerization; and the raw materials comprise, in parts by weight, (1) 19-28 parts of dibasic alcohol, (2) 10-25 parts of saturated dibasic acid, (3) 15-27 parts of unsaturated dibasic acid, (4) 1-7 parts of monobasic acid blocking agent, and (5) 28-37 parts of diluting agent. The invention further provides a preparation method for the mono-acid blocked unsaturated polyester resin. The product obtained by the preparation method provided by the invention is better in compatibility, better in hydrolytic stability and higher in hardness compared with common unsaturated resin, as well as high in strength.

The present invention is one kind of dull white finishing polyurethane paint for wood ware. The present invention features that the dull white finishing paint is compounded with three components, including the component A comprising modified alkyd resin, titanium white powder, nitro cotton, etc.; the component B comprising n-butyrate and HDI-90; and component C comprising n-butyrate and toluene. The dull white finishing paint has excellent yellowing resistance, powerful adhesion, high hardness, high wear resistance, good leveling property, and high environment protecting property.

The invention belongs to the technical field of adhesive materials and discloses yellowing resistant liquid optical adhesive. The yellowing resistant liquid optical adhesive comprises the following components of, by mass, 30 to 40% of polyurethane modified acrylate pre-polymers, 6 to 15% of active diluent monomers, 30 to 45% of plasticizers, 5 to 10% of coupling agents, 1.5 to 4% of photoinitiators, 0.5 to 3% of antioxidants and 0.1 to 1% of yellowing resistant polymerization inhibitor A. The yellowing resistant liquid optical adhesive has the advantages of enabling the light transmittance to be larger than 99% and being high in refractive index, yellowing resistant and remarkable in ageing resistance effect due to the synergistic effect of yellowing resistant polyurethane modified acrylates and the monomers, the plasticizers, the coupling agents, the photoinitiators, the antioxidants and the like.

The invention provides an ablation-resistant, wave-absorbing, antiskid and wear-resistant composite coating and a preparation method thereof, and belongs to the field of special functional coatings. The composite coating comprises an anticorrosion bottom layer, an ablation-resistant wave-absorbing sandwich layer, an antiskid and wear-resistant layer and an anti-aging surface layer, and the composite coating is designed through collaborative matching of interlayer thickness to form a multifunctional compatible integrated coating. Compared traditional antiskid coatings, the coating of the invention has the following advantages: the process is simple, the reflectivity of the composite coating is smaller than or equal to -7 dB in a frequency band of 8-18 GHz, the composite coating has a low linear ablation rate and a good anti-aging performance, the static friction coefficient before and after abrasion is larger than or equal to 1.10, the composite coating can pass GJB150 environment testassessment, and the coating design scheme has remarkable technical advancement.

The invention discloses a modified unsaturated polyester resin excellent in ageing resistance. The modified unsaturated polyester resin comprises the following raw materials: cis-butenedioic anhydride, phthalic anhydride, maleic anhydride, terephthalic acid, ethylene glycol, propylene glycol, diethylene glycol, rosin, propoxylated bisphenol A, hydroquinone, styrene, linseed oil, cobalt isooctanoate, methyl ethyl ketone peroxide, organic montmorillonite, nano titanium dioxide, nano zinc oxide, an aluminate coupling agent, a polymerization inhibitor, a modified ultraviolet absorber, a catalyst, an air-drying additive and an antioxidant B215. The invention also provides a preparation method of the modified unsaturated polyester resin excellent in ageing resistance. The unsaturated polyester resin prepared by the invention is excellent in ageing resistance.

The invention discloses mould-proof sealant and a preparation method thereof. The mould-proof sealant is prepared from the following raw materials in parts by weight: 100 parts of a silane modified polyether mixture, 100-150 parts of filler, 0.5-1.5 parts of vinyl trimethoxy silane, 5-10 parts of a rheological agent, 5-10 parts of titanium dioxide, 0.5-1.5 parts of a stabilizer and 5-10 parts of acaking accelerator. The mould-proof sealant prepared from the silane modified polyether mixture, the filler, the vinyl trimethoxy silane, the rheological agent, light titanium dioxide, the stabilizerand the caking accelerator has high storage stability and can overcome the defect of the traditional mould-proof silicone sealant that mould-proof effect is poor; after being cured, the product has brightness like ceramic glaze, mould-proof, antipollution and anti-yellowing properties are greatly improved, and the mould-proof sealant is applicable to pointing of ground and wall surface, edge closing of an internal corner and edge closing beautifying of a closestool, a kitchen top, a shower room partition wall, a balcony and a windowsill of top-grade home space, public houses and business places, so that home space sanitation dead angles are thoroughly cleaned.

The invention discloses a hydroxyl-terminated phenyl amino polyether modified silicone oil. According to the invention, polyether modified amino silane is firstly prepared from amino silane and alkyl epoxy polyether, and then the hydroxyl-terminated phenyl amino polyether modified silicone oil is prepared from polyether modified amino silane, phenylsilane and octamethylcyclotetrasiloxane in the presence of a catalyst. Compared with the prior art, alkyl phenyl silane, polyether modified amino silane and octamethylcyclotetrasiloxane are synthesized into a brand-new hydroxyl-terminated phenyl polyether modified silicone oil through a polymerization balanced reaction. The microemulsion type softener emulsified by the silicone oil is soft and smooth in hand feel and excellent in yellowing resistance and temperature resistance when used for finishing textiles; the product is good in stability of shear force, centrifugal force, electrolyte, hard water and the like, and is particularly suitable for surface treatment of polyester fibers.

The invention discloses a composite antioxidant for polyurethane fiber; the composite antioxidant takes 1, 3, 5-trimethyl-2, 4, 6-3 (3,5-di-tert-butyl-4-hydroxy benzyl) benzene as the main material, comprises one or two types of mixed pentaerythritol-4 (3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, 3 (3,5-di-tert-butyl-4-hydroxy benzyl) isocyanurate and Beta-(3,5-di-tert-butyl-4-Hydroxy-phenyl) propionic acid ester 18 and is added into polyurethane to improve the thermal stability of the polyurethane; the composite antioxidant comprises the following components in ratio by weight: the ratio of the 1,3,5-trimethyl-2,4,6-3 (3,5-di-tert-butyl-4-hydroxy benzyl) benzene to the sum of the other component or to the other two components is: 1 to 90:99 to 10; and the addition is 0.01 to 5.0 percent of the weight of the polyurethane. The use of the composite antioxidant for polyurethane fiber can greatly improve the yellowing resistance and the thermal stability of the polyurethane fiber.

The invention relates to aqueous marble-imitated colorful paint. The comprises the following ingredients, by weight, 200-300 parts of deionized water, 3.5-5.5 parts of hydroxyethyl cellulose, 10-15 parts of heavy calcium carbonate, 0.5-2.0 parts of wetting agent, 1.5-2.5 parts of antifoaming agent, 10-20 parts of propylene glycol, 8.5-10.5 parts of glycol, 17.5-20.5 parts of film forming auxiliary agent, 2.5-5.5 parts of polyurethane thickening agent, 350-450 parts of silicone acrylic emulsion, 2.5-4.5 parts of leveling agent, 0.1-0.4 part of drier, 2.0-3.0 parts of anti-sedimentation agent, 2.0-3.0 parts of antiseptic and 150-200 parts of color slices. The aqueous marble-imitated colorful paint is advantaged by excellent acid resistance, alkali resistance and chemical resistance, high ultraviolet resistance, super durability, anti-yellowing and water white resistance.

The invention discloses an aspartate polyurea adhesive, relates to the technical field of adhesive preparation and mainly aims to solve the problems that the adhesive strength, the appearance or the sealing performance of a conventional polyurethane adhesive are affected as an adhesive layer or surface has multiple fine bubbles caused by wet vapor. The aspartate polyurea adhesive disclosed by the invention is formed by mixing of a component A and a component B in a mass ratio of 100:(10-1000), wherein the component A comprises a polyaspartic ester; and the component B comprises an aliphatic or alicyclic diisocyanate monomer, dimer or trimer or a prepolymer of the monomer, dimer or trimer. The invention further discloses a preparation method of the aspartate polyurea adhesive. Compared with a common polyurethane adhesive, the aspartate polyurea adhesive disclosed by the invention is not sensitive to wet vapor and is excellent in property such as corrosion resistance and yellowing resistance, and a polyurea structure generated through a reaction has good adherence to a substrate when being compared with a carbamate structure.

The invention provides a modified silicone sealant for asphalt pavement crack treatment, which comprises the following components in parts by weight: 10-30 parts of modified polyurethane prepolymer, 10-30 parts of modified acrylic resin prepolymer, 50-70 parts of silicone sealant, 2-4 parts of dimethyl silicone oil, 3-8 parts of coupling agent, 2-4 parts of hydroxyl radical scavenger and 2-4 partsof cross-linking agent. The compatibility between the modified polyurethane prepolymer, the modified acrylic acid prepolymer and the silicone sealant is better, so that the polyurethane prepolymer and the acrylic acid prepolymer can be better modified and added into the silicone sealant, and the polyurethane prepolymer and the acrylic acid prepolymer can be uniformly and stably dispersed in a reaction system; and the binding force between the rubber materials is improved, so that the elongation, the low-temperature tensile strength and the storage stability of the rubber body are improved, and the modified silicone sealant provided by the invention can be effectively used for treating asphalt pavement cracks.

The invention belongs to the technical field of organic silicon material preparation, and particularly relates to a preparation method and application of polyamino vinyl silicone oil. The preparation method comprises the following steps: 1) under the condition of inert gas, adding a basic catalyst and a siloxane ring body, heating while stirring, reacting for a period of time, then adding a polyamino silane coupling agent and tetramethyl divinyl disiloxane, and continuously reacting for a period of time; and 2) performing heating and continuously performing reacting for a period of time to obtain a semitransparent viscous liquid. The invention solves the problems that in the prior art, an amino silicon oil preparation method is numerous in operation steps and high in manufacturing cost, and softness and yellowing resistance cannot be achieved at the same time.

The invention belongs to the technical field of automobile decoration and particularly discloses a high-glossiness automobile black film and a preparation method therefor. The high-glossiness automobile black film comprises locating paper, a bright coating, a PVC black film, an acrylic pressure-sensitive adhesive and release paper sequentially from top to bottom. A formula of the bright coating isprepared from the following matters in parts by weight: 41-45 parts of diethyl p-toluenesulfonyloxymethylphosphonate, 2.5-3.0 parts of tin photostabilizer, 0.2-0.3 part of 8% zinc caprylate, 5-5.5 parts of propylene glycol methyl ether acetate, 28-31 parts of polyisocyanate, 6-9 parts of butyl acetate cellulose and 13-15 parts of butanone. According to the high-glossiness automobile black film, the glossiness is 90% or more and is close to a mirror face effect, so that the attractiveness of an automobile body is improved, and the vehicle competitiveness is improved; and the weather resistanceand acid/base resistance are good, the scratch resistance, scrub resistance, stone impact resistance and water gun impact resistance are greatly improved, and the service life of the high-glossinessautomobile black film is prolonged.

The invention discloses a fabric antibacterial softener and a preparation method thereof. The softener is prepared from, by weight, 10-15 parts of amino-silicone oil, 10-15 parts of ester-based quaternary ammonium salt, 1-3 parts of propyl paraben, 1-3 parts of carboxymethyl chitosan silver, 2-5 parts of eugenol and 150-200 parts of deionized water. The method includes the steps that the deionizedwater is heated to 40 DEG C, the amino silicone oil and the ester-based quaternary ammonium salt are added for constant-temperature stirring for 15 minutes, the propyl paraben, the carboxymethyl chitosan silver and the eugenol are added for stirring for 20 minutes, the materials are sufficiently mixed, and the softener is prepared. The ester-based quaternary ammonium salt serves as a cationic surfactant and excellent smoothness, anti-static performance, yellowing resistance, easy biodegradation and environmental friendliness, so that the product not only has excellent softness, but also has good antistatic property; the product has an excellent antibacterial effect, and the preparation method is simple and easy to apply and popularize.

The invention discloses a preparation method of an antistatic powder coating material, comprising the following steps: firstly dispersing acetylene black by using a dimethyl carbonate solution of oleic acid diethanolamide, then esterifying stearic acid and triethanolamine under the action of a catalyst. dispersing obtained ester amine in an amide solution, and reacting ester amine with dimethyl carbonate to obtain an antistatic solution containing quaternary ammonium salt. The preparation method has the advantages of not only effectively improving the antistatic effect, but also improving thesurface activity of the acetylene black, thus enhancing the dispersion compatibility of the acetylene black in a polypropylene matrix, improving the uniform stability of the finished coating material,improving the antibacterial and anti-yellowing properties and the like of the finished coating material by the reaction, and enhancing the finished product quality.

The invention relates to the technical field of flame-retardant high polymer materials, in particular to an anti-yellowing low-mold-scale halogen-free flame-retardant polyamide composite material and a preparation method thereof. The polyamide composite material comprises the following components: polyamide resin, a compound halogen-free flame retardant, a metal oxide, a polyhydroxy component and other auxiliaries, the compound halogen-free flame retardant is prepared from alkyl phosphinate, melamine polyphosphate and zinc borate; the ratio of the polyamide resin to the compound halogen-free flame retardant to the metal oxide to the polyhydroxy component in parts by weight is (40-60): (15-25): (0.2-1.5): (0.2-1.5). The anti-yellowing low-mold-scale halogen-free flame-retardant polyamide composite material provided by the invention has high flame retardant property and good mechanical property, and also has excellent anti-yellowing and low-mold-scale characteristics.