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Preparation method of H-grade water-solubility silicon steel sheet paint

A silicon steel flake paint, water-soluble technology, applied in coatings, polyester coatings, etc., can solve the problems of agglomeration and agglomeration, paint liquid performance decline, paint liquid powder sedimentation and other problems, to improve the interface state, paint liquid volume and other problems Uniform and non-settling effect

Active Publication Date: 2012-01-04
四川东材绝缘技术有限公司
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  • Claims
  • Application Information

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Problems solved by technology

Domestic water-soluble silicon steel sheet paints generally include: (1) Chinese patent application No. 00114587.8 and other disclosures mainly use acrylic resin, amino resin (or silicone resin) to form an adhesive, together with inorganic fillers, additives, and water and water-soluble paints. (2) Chinese Patent Application No. 200410064512.0, etc., is made of crosslinkable pure acrylic emulsion (or crosslinkable silicon acrylic emulsion), amino resin, inorganic filler , water-based additives, film-forming additives and water, in which the cross-linkable silicon-acrylic emulsion is prepared by core-shell seed emulsion polymerization; (3) Some domestic manufacturers use phenolic resin, polyester resin and other systems as adhesives basic composition, but the surface treatment of inorganic powder fillers is not carried out with coupling agents, and a large amount of inorganic fillers cannot be used in water-soluble silicon steel sheet paint, which leads to poor storage stability of water-soluble silicon steel sheet paint
Generally speaking, there are not many water-soluble semi-inorganic silicon steel sheet paints in China at present. Compared with imported products, the technical level in terms of insulation and water resistance is equivalent, but in the case of high inorganic powder content, the paint liquid has serious problems. The phenomenon of powder settlement, agglomeration and agglomeration leads to poor storage stability of the paint liquid, and the performance of the paint liquid drops seriously after long-term storage

Method used

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  • Preparation method of H-grade water-solubility silicon steel sheet paint

Examples

Experimental program
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Effect test

Embodiment 1

[0055] a. 440kg vegetable oil (catalysal oil: tung oil: linseed oil: castor oil mass ratio = 1:1:3:5, that is, the vegetable oil is composed of catalpa oil, tung oil, linseed oil, Composition with castor oil, the mass ratio described in the following examples (that is, the mass ratio of the raw material components described outside the brackets), 220kg glycerol is added to the reactor, and the temperature is stirred to 150°C ± 5°C for alcoholysis reaction 2h, then heat up to 200°C±5°C for alcoholysis for about 1h, cool down to below 200°C, add 110kg of isophthalic acid, react at 250°C for 2-4h, cool down to 180°C, add 66kg of trimellitic anhydride, react at 175°C for 30-60min, After cooling down, add 110kg of co-solvent (ethylene glycol butyl ether: propylene glycol ether: ethanol mass ratio = 2:1:4), add 66kg of neutralizing agent triethylamine below 60°C, and stir for 0.5h to obtain a water-soluble alkyd Resin, spare.

[0056] b. In the dispersion tank 1, add 11kg of coupli...

Embodiment 2

[0059] a. 440kg of vegetable oil (mass ratio of catalpa oil: tung oil: linseed oil: hydrogenated castor oil = 1:1:3:5), 110kg of polyols (mass ratio of neopentyl glycol and trimethylolpropane = 1:4) Add to the reaction kettle, stir and heat up to 150°C±5°C for alcoholysis for 2 hours, then heat up to 200°C±5°C for alcoholysis for about 1 hour, cool down to below 200°C, add 110kg of isophthalic acid, react at 250°C for 2-4 hours, cool down Add 66kg of trimellitic anhydride to 180°C, react at 175°C for 30-60min, add 110kg of co-solvent after cooling down (ethylene glycol butyl ether: butanol: ethylene glycol propyl ether: propylene glycol methyl ether mass ratio = 1:5:1:1 ), add 66kg of neutralizing agent triethylamine below 60°C, and stir for 0.5h to obtain a water-soluble alkyd resin for later use.

[0060] b. In the dispersion tank 1, add 11kg of coupling agent silane coupling agent and 660kg of ethanol and mix evenly, then add 550kg of nanometer inorganic filler silica and c...

Embodiment 3

[0063] a. Add 220kg of vegetable oil (mass ratio of catalpa oil: soybean oil: linseed oil: castor oil = 1:1:3:5) and 220kg of trimethylolpropane to the reactor, stir and heat up to 150℃±5℃ for alcoholysis reaction for 2 hours , then heat up to 200°C±5°C for alcoholysis for about 1h, cool down to below 200°C, add 110kg of isophthalic acid, react at 250°C for 2-4h, cool down to 180°C, add 66kg of trimellitic anhydride, react at 175°C for 30-60min, cool down Finally, add 110kg of co-solvent (ethylene glycol propyl ether: butanol mass ratio = 1:7), add 66kg of neutralizing agent ammonia water below 60°C, and stir for 0.5h to obtain a water-soluble alkyd resin for later use.

[0064] b. In the dispersion tank 1, add 11kg of coupling agent titanate coupling agent and 660kg of ethanol and mix evenly, then add 550kg of nanometer inorganic filler aluminum oxide and disperse with high-speed stirring to make it fully wet. Then, at normal temperature, after most of the ethanol is volatili...

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Abstract

The invention discloses a preparation method of a H-grade water-solubility silicon steel sheet paint, which comprises the following steps of: taking raw materials such as 10-20 parts of plant oil, 5-10 parts of polyatomic alcohol, 5 parts of binary acid, 3 parts of trimellitic anhydride, 5 parts of cosolvent, 3 parts of neutralizer, 0.5 part of coupling agent, 30 parts of alcohol, 25 parts of nanometer inorganic packing, 0.15 part of pigment, 5 parts of melamine resin, 0.1 part of flatting agent, 2 parts of dispersing moistening agent, 0.1 part of deforming agent and 10 parts of water according to a weight ratio, and preparing an environmental-friendly product with good combination properties for large generators through the synthesis of alkyd resins, the coupling treatment of the nanometer inorganic packing, the mixing and dispersion of materials such as the inorganic substances and the like in a paint, the grinding of the paint vehicle and the like. The preparation method has the advantages of solving the problems of sedimentation, aggregation and blocking of powder in paint liquid under the condition of high content of inorganic powder, obviously increasing the storage stability of the paint liquid and the hardness of a paint film, effectively reducing the discharge of poisonous and harmful gases in the production process and reducing the harm to the health of human bodies.

Description

technical field [0001] The invention belongs to a preparation method of paint, and relates to a preparation method of H-grade water-soluble silicon steel sheet paint. The prepared H grade water-soluble silicon steel sheet paint is especially suitable for silicon steel sheet insulation of large generators and motors. Background technique [0002] At present, developed countries use environmentally friendly inorganic or semi-inorganic coatings in the insulation technology of silicon steel sheets for electrical appliances such as motors and transformers. Domestic water-soluble silicon steel sheet paints generally include: (1) Chinese patent application No. 00114587.8 and other disclosures mainly use acrylic resin, amino resin (or silicone resin) to form an adhesive, together with inorganic fillers, additives, and water and water-soluble paints. (2) Chinese Patent Application No. 200410064512.0, etc., is made of crosslinkable pure acrylic emulsion (or crosslinkable silicon acry...

Claims

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Application Information

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IPC IPC(8): C09D167/08C09D7/12C08G63/49
Inventor 张先来文清云倪平袁勇杜佳
Owner 四川东材绝缘技术有限公司
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