The invention relates to a preparation method of a high temperature resistant composite coating. The coating comprises, by mass, 50-70% of an organosilicon base material, 20-40% of a filler, 3-6% of an assistant and 20-40% of a solvent. The high temperature resistant organosilicon composite coating prepared in the invention has a double-layer protection layer, and overcomes original disadvantages of easy scorification under high-temperature dry burning conditions, easy oxidation after long time use and the like.

Preparation method of high temperature resistant composite coating

The invention discloses. The water-based organosilicone high temperature resistant anticorrosive coating takes water-based organosilicone resin as a film former and comprises the following components in percentage by weight: 40-50% of water-based organosilicone base stock, 15-40% of high temperature resistant filler, 0.1-5% of auxiliaries and balance of water, wherein the auxiliaries comprise a wetting agent, a dispersing agent, an anti-setting agent, a coupling agent, a leveling agent and a defoaming agent. The water-based organosilicone high temperature resistant anticorrosive coating obtained by combining the components has the following beneficial effects: firstly, the water-based organosilicone high temperature resistant anticorrosive coating is water-based, so that the water-based organosilicone high temperature resistant anticorrosive coating is healthy and environmental-friendly, and the VOC (volatile organic compound) is greatly reduced; secondly, single component construction is convenient, and the water-based organosilicone high temperature resistant anticorrosive coating can be directly brushed or sprayed onto the surface of a workpiece and dried and solidified at room temperature; thirdly, the properties of a coating are good, and acid-base resistance property is good, so that the water-based organosilicone high temperature resistant anticorrosive coating has a wide prospect in application and development. The invention also discloses a preparation method of the water-based organosilicone high temperature resistant anticorrosive coating, and the preparation method of the water-based organosilicone high temperature resistant anticorrosive coating has the advantages of simple preparation technology and industrialization applicability.

Water-based organosilicone high temperature resistant anticorrosive coating and preparation method thereof

The invention discloses phenyl MDT silicon resin and a preparation method thereof. The phenyl MDT silicon resin adopts single-group organic silane as a M link, adopts two-group organic silane as a D link and adopts three-group organic silane as a T link, wherein at least one of the D link or the T link is the phenyl silane, and the phenyl silane is collectively hydrolyzed under an acidic catalyst and concentrated under an alkaline catalyst. Raw materials for the phenyl MDT silicon resin are available, no strong corrosive substance is generated in the reaction process, and the requirement on equipment and operation is low. The preparation method comprises the following steps of adding the acidic catalyst in the mixed liquor of the M-link silane, the D-link silane and the T-link silane. The M link, the D link and the T link are unnecessary to drop into a reactor respectively, so that the operation step is simple, the procedure is saved, the production efficiency can be improved, and the industrialized mass production can be realized. The refractive index nD of the prepared phenyl MDT silicon resin is more than 1.53.

Phenyl MDT silicon resin and preparation method thereof

The invention provides a rare earth modified brushing electroplating silver plating solution. The rare earth modified brushing electroplating silver plating solution comprises following components including, by mass concentration, 10 g/L to 30 g/L of silver salt, 0.1 g/L to 2 g/L of modifying agent rare earth cerous nitrate, 50 g/L to 200 g/L of coordination agent sulfosalicylic acid, 50 g/L to 200 g/L of imidazole, 0.01 g/L to 1 g/L of protection agent hexamethylenetetramine, 0.01 g/L to 1 g/L of addition agent N,N-dimethylformamide, 1 g/L to 30 g/L of polyethylene glycol, 10 g/L to 50 g/L of ammonium hydroxide, 10 g/L to 40 g/L of stabilizing agent ammonium acetate and 5 g/L to 30 g/L of potassium pyrophosphate. The pH value of the solution is adjusted to range from 6.8 to 7.2 through dilute nitric acid or dilute sodium hydroxide. The invention further provides a preparing technology and use method of the rare earth modified brushing electroplating silver plating solution. The harmfulless silver salt, a rare earth modification agent, a coordination agent, a protection agent and the like are mixed for forming the solution, the solution is a neutral cyanide-free silver plating solution, raw materials are easily obtained, and the preparing technology is simple. A product is applied to a copper or copper alloy surface to be subject to brushing electroplating, the method is simple and easy to operate, and a plating is stable.

Rare earth modified brushing electroplating silver plating solution and preparing technology and use method of solution

The invention relates to powder paint, and especially relates to a high-temperature-resistant powder paint preparation method. The powder paint is prepared from the materials of: 20-50% of silicone resin, 5-20% of epoxy resin, 5-20% of polyester resin, 10-30% of low-melting-point glass powder, and 1-20% of mica powder. According to the technical scheme provided by the invention, silicone resin and normal-temperature-cured conventional resin are blended, such that the entire system can be cured and crosslinked into a film under normal temperature, and has excellent physical performances. The silicone resin can resist temperature of at least 500 DEG C. Before the low-melting-point glass powder is formed into a film, a coating is prevented from cracking and falling. Also, the paint adopts the low-melting-point glass powder which has a secondary film-forming effect at a high-temperature stage with a temperature higher than 400 DEG C, such that inorganic coating formed by silicone resin under high temperature can be adhered to the substrate. The coating is prevented from cracking and falling, such that decoration and protection are provided for the substrate.

High temperature resistant powder coating

The invention relates to methyl phenyl silicone resin base high-temperature-resistant coating and a preparation method thereof, which belong to the technical field of organic coating preparation Methyl phenyl silicone resin serves as a base stock The resin utilizes methyl trichlorosilane, dimethyldichlorosilance and methylphenyldichloros as hydrolysis raw materials and is prepared by processes of hydrolysis, polycondensation and the like The preparation process is simple, the resin yield is high, and the pure resin itself has good high temperature resistance and low temperature resistance The coating utilizes titanium dioxide as pigment, mica powder, talcum powder, low melting-point glass powder and hollow glass microspheres as fillers, organobentonite and KH-550 as auxiliaries and dimethylbenzene as solvent Organosilicone high-temperature-resistant coating prepared by the preparation method is coated on the surface of a base material, is fast in air drying speed at normal temperature, tough in coating film and high in mechanical strength, can resist to the high temperature of 1000 DEG C for a long time, and has long salt fog resistance time In addition, the impact strength of the high-temperature-resistant coating reaches above 50kgcm

Methyl phenyl silicone resin base high-temperature-resistant coating and preparation method thereof

The invention discloses a preparation method for thermoset high temperature resistant methyl phenyl silicone resin, which relates to the technical field of resin preparation and comprises the steps of utilizing toluene or dimethylbenzene or mixed solution of the toluene and dimethylbenzene to serve as a solvent, utilizing methyl trichlorosilane, dichlorodimethylsilane and methylphenyldichloros as monomer raw materials, dropping mixed solution of acetone and water into the raw materials under the condition of ice-water bath, ensuring that the dropping is finished within 3-5 hours, obtaining a prepolymer of the methyl phenyl silicone resin, performing condensation and curing on the obtained prepolymer above 150 DEG C after pressure of the prepolymer is reduced and the prepolyme is concentrated, the adopted condensation catalyst is caprylate or naphthenate, particularly is stannous octoate, zinc isoocatanoate, cobalt naphthenate and dibutyltin dilaurate The resin is semi-transparent hard or elastic solid, can not be dissolved or fused, and can be resistant to high temperature above 200 DEG C, and can be used as silicon rubber or a plastic filler

Preparation method for thermoset high temperature resistant methyl phenyl silicone resin

The invention belongs to an electrochemical technology, and relates to a cyanide-free silver plating stable electroplating solution and a preparation method thereof, and a silver plating method. Each 1L of electroplating solution comprises the following raw material components by weight: 10 to 50g of silver salt, 50 to 540g of complexing agent, namely sulfosalicylic acid and homologs thereof or an imidazole and sulfosalicylic acid association complex, 20 to 120g of ammonium acetate, 5 to 20g of potassium hydroxide, 35 to 110g of ammonia water and 0.1 to 0.6g of organic additive; and the pH value is 7.5 to 9.5, cathodic current density is 10 to 30A/m , temperature is 25 DEG C, and electroplating time is 3 to 5 minutes. The electroplating solution is low in toxicity or non-toxic and high in stability, a bright and fine plating is formed on the surface of a plated part, is high in adhesion, and is thick, uniform, non-foaming and crack-free, the performance of cyanide-free silver plating is close to that of cyanide silver plating, and the application requirements of fields of medical apparatus electroplating and functional electroplating are met.

Cyanide-free silver plating stable electroplating solution and preparation method thereof, and silver plating method

Method for preparing polychlorinated phenyl trichlorosilane through catalysis of ionic liquid

The invention relates to a chemical nano-silver plating solution and a preparation method thereof, and a silver plating method for a copper part, and belongs to the technical field of chemical silver plating. The chemical silver plating solution comprises the following raw material components: a plating solution A and a plating solution B, wherein 1L of the plating solution A comprises 1 to 20g of silver salt and 3 to 50g of 25 mass percent ammonia water; 1L of the plating solution B comprises 3 to 105g of reducing agent, 0.05 to 1g of organic additive and 0.01 to 0.2g of other additives; and chemical silver plating temperature is 25 DEG C, and ageing time is 5 to 60 minutes. The surface of copper is subjected to chemical silver plating by the method, the plating solution has high stability, a bright and fine nano-silver plating is formed on the surface of the copper, is high in performance and adhesion, and is thick, uniform, non-foaming and crack-free, and the application requirements of fields of decorative electroplating and functional electroplating are met.

Chemical nano-silver plating solution and preparation method thereof, and silver plating method for copper part

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