8results about How to "Improve boiling resistance" patented technology

The invention relates to the technical field of organic silicon resin preparation, in particular to trapezoidal methyl silicon resin and a preparation method thereof.The trapezoidal methyl silicon resin is prepared by taking methyl trichlorosilane as a main raw material, introducing a trapezoidal control agent containing amido and alkoxy at the same time to inhibit the reaction activity of the methyl trichlorosilane and then carrying out hydrolysis reaction in a small amount of alcohol solvent and water; the generation of a cross-linked network structure insoluble substance during hydrolysis is avoided, and the resin gelation risk is effectively reduced. The hydrolysis rate is reduced, so that the use amount of the solvent is reduced, the proportion of alcohol in the water phase is greatly reduced, and the process and environmental protection cost is reduced. The trapezoidal methyl silicone resin prepared by the method is excellent in viscosity performance, high in yield, excellent in boiling resistance, short in curing time, high in resin softening point and short in gelation time.

The invention discloses a polyester resin composition for a powder coating, a matte powder coating and application thereof, the polyester resin composition for the powder coating comprises a high-acid-value resin A and a low-acid-value resin B, and the low-acid-value resin B is prepared from the following raw materials: polyol, an organosilicon intermediate, polyacid, an acidolysis agent and a catalyst. The super-weather-resistant high-acid-value resin A and the super-weather-resistant low-acid-value resin B have appropriate difference in performance indexes such as acid value and viscosity, and meanwhile, an organic silicon intermediate is only introduced into the super-weather-resistant low-acid-value resin B, so that a relatively large structural composition and reaction activity difference is generated between the super-weather-resistant high-acid-value resin A and the super-weather-resistant low-acid-value resin B; the prepared super-weather-resistant matte powder coating is outstanding in matting performance, has relatively low matting gloss without adding a matting agent, and also has a comfortable and soft surface appearance.

The present invention provides a conductive silver paste and a preparation method and application thereof. The raw materials for preparing the conductive silver paste include, by weight, 66-72 parts of a functional component, 3-6 parts of an auxiliary agent, and 25-28 parts of an organic solvent; the functional component includes a resin and conductive silver in a mass ratio of 1:(5-12); the resin includes a saturated polyester resin and an acrylic resin. The present invention provides a conductive silver paste having excellent conductive properties, water boiling resistance, and high weather resistance through a specific arrangement of the resin and the conductive silver in the functional component, and can be used for the preparation of a metal mesh flexible conductive film with high light transmittance requirements.

The invention discloses a hydrophobic photocatalytic epoxy resin / carbon fiber composite material and a preparation method thereof. The method comprises the following steps: pretreating a base material; constructing a nano TiO2 / epoxy composite layer on the surface of the pretreated sample; the method comprises the following steps: respectively preparing a low-concentration KH560 solution and a high-concentration KH560 solution, firstly immersing a sample into the low-concentration KH560 solution for treatment, and then immersing the sample into the high-concentration KH560 solution for treatment to form a gradient concentration layer with the concentration gradually increased from inside to outside; then carrying out ultraviolet light assisted grafting treatment; and finally, carrying out curing by adopting an intermittent curing process of segmented heating and interspersed natural cooling. According to the preparation method, KH560 and TiO2 form chemical bonding through gradient concentration design, and the interface bonding strength and hydrophobic performance are remarkably improved by combining ultraviolet light treatment and an intermittent curing process. The surface water contact angle of the prepared composite material can reach 114 degrees or above, the photocatalytic activity is well kept, and the composite material can be widely applied to the fields of ocean engineering, aerospace, new energy automobiles and the like.

The invention relates to the technical field of multifunctional polyester materials, and discloses polyester resin for a high-bio-based content boiling-resistant high-leveling powder coating, which is prepared by the following steps: preparing a carboxylated bio-based organic silicon monomer which is a carboxylated bio-based organic silicon monomer M1 or a carboxylated bio-based organic silicon monomer M2; on the basis of an esterification reaction mechanism, hydroxylated nano SiO2 is subjected to surface modification treatment through a carboxylated bio-based organic silicon monomer, and the bio-based organic-inorganic hybrid water-resistant modifier is prepared. Polyatomic acid and polyhydric alcohol containing 2, 5-furandicarboxylic acid components are used as synthetic monomers, a bio-based organic-inorganic hybrid water-resistant modifier is added, and the semi-crystalline polyester resin with high bio-based content is prepared through catalytic esterification and vacuum polycondensation reaction, and the semi-crystalline polyester resin can significantly improve the water resistance and the leveling performance of the powder coating, so that the water resistance and the leveling performance of the powder coating are greatly improved. The stable storage can be realized.

This invention relates to the field of coating technology, specifically to the preparation and application of a heat-insulating powder coating for color steel tile rolls. The invention provides a heat-insulating powder coating for color steel tile rolls, the raw materials for which include FEVE fluorocarbon resin, polyurethane resin, polyester resin, modifiers, isocyanate, defoamer, filler, pigment, and antistatic agent. The coating obtained by this invention has excellent heat insulation and flexibility properties, as well as high-efficiency water resistance and anti-aging effects, and has broad application prospects.

This invention discloses a vacuum electroplating UV-curable primer and its preparation method, relating to vacuum electroplating UV-curable coatings. The vacuum electroplating UV-curable primer of this invention has suitable curing efficiency and excellent coating adhesion. The coating exhibits low UV-curing volume shrinkage and excellent flexibility and leveling properties, resulting in a smooth, flat, high-gloss, and metallic finish. Furthermore, it demonstrates superior high-temperature resistance and water-boiling resistance, exhibiting excellent overall performance.

The invention discloses a high-fluidity and high-strength alcohol type transparent coating adhesive and a preparation method thereof. According to the invention, the white carbon black is subjected to surface modification by adopting the base rubber, the reinforcing filler, the filler surface modifier and the modifier solvent in a simple and easy-to-operate manner, and then the plasticizer, the cross-linking agent, the coupling agent and the catalyst are added for reaction, so that the white carbon black adhesive is prepared. And the adhesive has no corrosion to most of base materials and has excellent adhesive property.