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Water-based antirust agent for filter and preparation thereof

A water-based, filter technology, applied in the field of anti-rust agents, can solve the problems that cannot meet the anti-rust requirements of filter metal shell and threaded cover plate, poor adhesion of polyester powder coating, poor anti-rust effect, etc. Achieve the effect of economical composition, good anti-rust effect and long-lasting function

Active Publication Date: 2009-08-05
NANTONG HUAXING OIL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] To sum up, the commercially available or publicly reported water-based anti-rust agents have defects such as poor anti-rust effect, low temperature resistance, and poor adhesion to polyester powder coatings, which cannot meet the requirements of the metal shell of the filter and the threaded cover plate. anti-rust requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048]Add 300 grams of water to 50 grams of hydroxyethyl starch to dissolve, add 40 grams of acetate starch, and heat to 70 ° C, stir well (continuous stirring for 3 minutes), cool to room temperature, and then add 80 grams The water-based fluorocarbon emulsion is fully stirred (continuous stirring for 3min). The water-based fluorocarbon emulsion is a copolymer of vinyl fluoride and hydroxy vinyl ether, the concentration of fluorine is 8% by weight, and the main chain contains fluorine atoms. Rust inhibitor;

[0049] Add 8 grams of micron zinc powder to a mixed solution of 40 grams of isopropanol and 20 grams of acetone, fully stir (continuous stirring for 3 minutes), and ultrasonically disperse for 10 minutes to form a suspension, and add the suspension to the preparation In the obtained antirust agent, after fully stirring (continuously stirring for 3 minutes), add 55 grams of polytetrafluoroethylene emulsion, and stir evenly (continuously stirring for 3 minutes).

Embodiment 2

[0051] Add 325 grams of water to 55 grams of hydroxypropyl starch to dissolve, add 45 grams of acetate starch, and heat to 70 ° C, stir fully (continuous stirring for 3 minutes), cool to room temperature, and then add 90 grams The water-based fluorocarbon emulsion, fully stirred (continuously stirred for 3min), the water-based fluorocarbon emulsion is a copolymer of vinyl fluoride and hydroxy vinyl ether, the concentration of fluorine is 10% by weight, and the main chain contains fluorine atoms, and this product can be obtained Rust inhibitor;

[0052] The nano-zinc powder of 9 grams is added in the mixed solution that the isopropanol of 45 grams and the acetone of 25 grams are formed, fully stir (stirring continuously 3min), and ultrasonic dispersion 10 minutes to form suspension, suspension is added to preparation In the obtained antirust agent, after fully stirring (continuously stirring for 3 minutes), add 65 grams of polytetrafluoroethylene emulsion, and stir evenly (cont...

Embodiment 3

[0054] Add 350 grams of water to 60 grams of hydroxyethyl starch to dissolve, add 50 grams of acetate starch, and heat to 70 ° C, stir well (continuous stirring for 3 minutes), cool to room temperature, and then add 100 grams The water-based fluorocarbon emulsion is fully stirred (continuous stirring for 3min). The water-based fluorocarbon emulsion is a copolymer of vinyl fluoride and hydroxy vinyl ether, the concentration of fluorine is 11.5% by weight, and the main chain contains fluorine atoms, and the present invention can be obtained. Rust inhibitor;

[0055] Add 10 grams of micron zinc powder to a mixed solution of 50 grams of isopropanol and 30 grams of acetone, fully stir (continuous stirring for 3 minutes), and ultrasonically disperse for 10 minutes to form a suspension, and add the suspension to the preparation In the obtained antirust agent, after fully stirring (continuous stirring for 3 minutes), add 75 grams of polytetrafluoroethylene emulsion, and stir evenly (c...

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Abstract

The invention relates to a water base rust preventive for a filter, which comprises 50 to 60 weight parts of hydroxyalkyl starch, 40 to 50 weight parts of acetic ester starch, 80 to 100 weight parts of aqueous fluorocarbon emulsion, 300 to 350 weight parts of water, 55 to 75 weight parts of polyfluortetraethylene emulsion, 8 to 10 weight parts of micron or nanometer zinc powder, 40 to 50 weight parts of isopropanol and 20 to 30 weight parts of acetone, wherein the hydroxyalkyl starch is ethoxyl starch or hydroxypropyl starch; the aqueous fluorocarbon emulsion is multipolymer of fluorothene and an oxhydryl vinyl ether, the weight percentage concentration of fluorin is from 8 percent to 11.5 percent, and a main chain comprises fluorin atoms. A preparation method comprises traditional methods of mixing, heating stirring and ultrasonic dispersion. The rust preventive has the advantages of good antirust effect, high temperature resistance, favorable adhesive attraction to polyester powder coatings, and the like and can satisfy the antirust requirements of a metal outer casing and a treaded cover plate of the filter. The preparation method is technically simple and uses less equipment.

Description

technical field [0001] The invention relates to an antirust agent, more specifically, the invention relates to a water-based antirust agent for a filter, and at the same time, the invention also relates to a preparation method of the water-based antirust agent for a filter. technical background [0002] At present, filter manufacturers still use the traditional process of phosphating treatment (mainly zinc phosphating) for the rust prevention of the metal shell of the filter. The phosphating solution can form a phosphating film on the metal shell. After phosphating treatment, the outer wall of the metal shell is sprayed with polyester powder coating, and the phosphating film is used as the final surface state of the inner wall of the metal shell. The part connected with the open end of the metal shell of the filter is a threaded cover plate, which is connected with the shell by crimping. The threaded cover plate is made of galvanized steel plate with a galvanized layer on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/173
Inventor 邹宜哲吴昊郭长友
Owner NANTONG HUAXING OIL EQUIP
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