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Dispersing agent for anti-oxidation coating for heating silicon steel plate blank and preparation method thereof

A technology of anti-oxidation coating and slab heating, applied in the direction of coating, etc.

Inactive Publication Date: 2012-12-26
湖北海力环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the sodium or potassium salt aqueous solution of acrylic acid, 2-acrylamido-2-methylpropanesulfonate sodium, acrylate and sodium hypophosphite multipolymer copolymer is used as an anti-oxidation coating for silicon steel slab heating. The dispersant has not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] First mix 85 parts of acrylic acid, 10 parts of 2-acrylamido-2-methylpropanesulfonate sodium, 5 parts of acrylate and 25 parts of water to form component A, and put it into No. 1 dropping tank. Then mix 10 parts of ammonium persulfate and 50 parts of water evenly to form component B, and put it into the No. 2 dropping tank. Then mix 9 parts of sodium hypophosphite and 50 parts of water evenly, put it into a 500L reactor, turn on the mixer of the reactor, and raise the temperature. When the temperature of the material in the reactor rises to 80°C, add components A and B dropwise at the same time . During the dropping process, the temperature of the material in the kettle is controlled at 70°C, and the dropping speed is controlled at the same time, so that components A and B are dropped simultaneously within 4 hours. After components A and B are dripped, control the temperature of the material in the reactor at 70°C and continue the reaction for 1 hour. After cooling the...

Embodiment 2

[0016] Mix 80 parts of acrylic acid, 15 parts of sodium 2-acrylamido-2-methylpropanesulfonate, 5 parts of acrylate and 25 parts of water to form component A, and put it into the No. 1 dropping tank. Then mix 12 parts of ammonium persulfate and 50 parts of water evenly to form component B, and put it into the No. 2 dropping tank. Then mix 8 parts of sodium hypophosphite and 50 parts of water evenly, put it into a 500L reactor, turn on the mixer of the reactor, and raise the temperature. When the temperature of the material in the reactor rises to 80°C, add components A and B dropwise at the same time . During the dropping process, the temperature of the material in the kettle is controlled at 70°C, and the dropping speed is controlled at the same time, so that components A and B are dropped simultaneously within 2 hours. After components A and B are dripped, control the temperature of the material in the reactor at 70°C and continue the reaction for 1 hour. After cooling the m...

Embodiment 3

[0018] First mix 75 parts of acrylic acid, 18 parts of 2-acrylamido-2-methylpropanesulfonate sodium, 7 parts of acrylate and 25 parts of water to form component A, and put it into No. 1 dropping tank. Then mix 15 parts of ammonium persulfate and 50 parts of water evenly to form component B, and put it into the No. 2 dropping tank. Then mix 10 parts of sodium hypophosphite and 50 parts of water evenly, put it into a 500L reactor, turn on the reactor agitator, and raise the temperature. When the temperature of the material in the reactor rises to 80°C, add components A and B dropwise at the same time . During the dropping process, the temperature of the material in the kettle is controlled at 80°C, and the dropping speed is controlled at the same time, so that components A and B are dropped simultaneously within 3 hours. After components A and B are dripped, control the temperature of the material in the reactor at 80°C and continue the reaction for 1 hour. After cooling the ma...

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PUM

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Abstract

A dispersing agent for anti-oxidation coating for heating a silicon steel plate blank is prepared by the following steps: mixing 100 parts of a mixture of crylic acid, 2-acrylamide group-2-methyl propane sodium sulfonate, acrylic ester and water to prepare a component A; mixing 10-15 parts of ammonium persulfate and the water to prepare a component B; placing 8-10 parts of sodium hypophosphite and the water in a reaction still, stirring and rising temperature to 80 DEG C, then simultaneously dropping the component A and the component B, controlling the temperature to be 70-95 DEG C, and enabling the component A and the component B to completely and simultaneously drip off in 2-4 hours; and continuously reacting for 1 hour, cooling and adjusting a pH value to obtain the needed dispersing agent. A small quantity of the dispersing agent is added in a slurry mixed by powder coating and the water, viscosity of the slurry is reduced, mobility of the slurry is improved to be favorable for spraying and coating, the powder coating is even in dispersion and not easy to deposit, a slurry suspension system is stable, a coating layer forming on the surface of a silicon steel plate blank is even, tight and not easy to drop, the anti-oxidation efficiency of the coating layer is improved, and an oxidation burn out rate of the silicon steel plate blank is reduced.

Description

technical field [0001] The invention relates to a dispersant for an anti-oxidation coating for heating silicon steel slabs and a preparation method thereof, belonging to the field of anti-oxidation coatings for heating silicon steel slabs. Background technique [0002] If effective measures are not taken, the oxidation and burning of the steel slab during the heating process is unavoidable, especially for the silicon slab. Burning loss (burning loss is as high as 5% to 6%), mechanical and application performance decline, and it is easy to cause liquid oxide slag to drip from the silicon steel billet and deposit on the bottom of the furnace, requiring frequent shutdown of the furnace to clean the slag, which seriously limits the quality of silicon steel and yield. To prevent the oxidation and burning of silicon billet during heating, many scholars at home and abroad have conducted a lot of research. Domestic researchers such as Xiong Xingyun of Wuhan Iron and Steel Company h...

Claims

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Application Information

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IPC IPC(8): C08F220/06C08F220/58C08F220/10C09D7/12
Inventor 史铁京彭玖玲赵连国
Owner 湖北海力环保科技股份有限公司
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