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Resin anti-corrosive paint

An anti-corrosion coating and resin-based technology, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of difficult coating and repair, short service life, high price, etc., and achieve easy coating and repair, long service life and low price cheap effect

Inactive Publication Date: 2009-09-09
沈福昌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing anti-corrosion coatings, such as fluorocarbon coatings and some imported anti-corrosion coatings, have good anti-corrosion effects, they are expensive and have a short service life, generally failing in about 6 months. In addition, the coating and It is also difficult to repair, so these anti-corrosion coatings are far from meeting the requirements of the market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The following is a brief description of the preparation process of the coating of the present invention: first determine the parts by weight of each component according to the target performance of the coating, and strictly batch the ingredients according to the parts by weight; then miscible, kneading and aging the raw materials; finally pass the analysis Then pack it. During the whole process, the temperature is strictly controlled within the range of 60-80°C; the volatile components of the solvent are recovered and utilized by the condenser.

[0032] For the same anticorrosion project of the anticorrosion coating of the present invention, the anticorrosion film is roughly divided into a bottom layer, an intermediate layer and a surface layer, and each layer can be further subdivided into several thin layers. The basic characteristics of each layer can be the same but there can also be differences: the bottom layer should have sufficient adhesion; the middle layer sho...

Embodiment 1

[0035] Add the following raw materials in a 5L glass three-necked flask: 205g polyvinyl chloride resin, 98g perchlorethylene resin, 74g polytetrafluoroethylene resin, 344g cyclohexanone, 228g toluene, 102g ethyl acetate, 162g dioctyl phthalate ; Start stirring at room temperature first, and at the same time, use a water-cooled condenser to reflux the volatiles for use, and then use a brine bath to heat the above-mentioned materials to 49-51°C and keep the temperature within this range. The entire system is in a closed state. After keeping it for about 20 minutes, slowly raise the temperature to 70-80°C; keep the above state for 20 minutes, carefully observe the condition of the materials in the flask; finally, slowly cool down to below 40°C, and put 24g of antioxidant 1010 and 20g of antioxidant H into the flask , and then continue to stir evenly. The coating can be used in equipment such as incinerators.

Embodiment 2

[0037] Add the following raw materials into a 5L glass three-necked flask: 279g of polyvinyl chloride resin, 119g of perchlorethylene resin, 345g of acetone, 346g of toluene, and 163g of di-isooctyl phthalate; The condenser will reflux the volatile matter, and then use the brine bath method to heat the above-mentioned materials to 49-51°C and keep the temperature within this range. The whole system is in a closed state, keep it for about 20 minutes, and then slowly raise the temperature to 70-80°C Keep the above state for 20 minutes, carefully observe the condition of the materials in the flask; finally, slowly lower the temperature to below 40°C, put 25g of antioxidant B215 and 20g of antioxidant H2 into the flask, and continue to stir and discharge evenly. The coating can be used for coating cable joints underground or in sewers.

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PUM

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Abstract

The invention discloses a resin anti-corrosive paint which is prepared from 10-35 of resin composition, 5-15 of plasticiser, 45-70 of solvent, and 1-5 of assistant according to the weight percent, wherein the resin composition is prepared from 30-60 of polyvinyl chloride, 20-50 of chlorinated polyvinyl chloride and 0-20 of polyfluortetraethylene according to the weight percent; the plasticiser is phthalic acid esters; the solvent is one or more of a ketone solvent, a benzene solvent or an ester solvent; the assistant is antioxidant or age inhibitor; and the polyvinyl chloride uses powder as the raw material. The anti-corrosive paint has the advantages of corrosion resistance, long service life, simple and convenient coating and mending, little pollution and cheap price, can be widely used for flue gas purification and surface corrosion of chemical equipment, engineering construction, ships, and the like, and has a good market prospect.

Description

technical field [0001] The invention relates to an anti-corrosion coating, in particular to an anti-corrosion coating used in occasions such as flue gas purification equipment and chemical equipment. Background technique [0002] In flue gas purification equipment and chemical equipment and other equipment, the flow-through parts are in contact with corrosive gases, which contain a large amount of HCI, H 2 O, SO 2 , O 2 , NO, NO 2 , NaOH, HNO 3 Strongly corrosive substances composed of such as, etc., and often contain particulate matter, coupled with a relatively large gas flow rate, strongly scours the surface of the equipment, forming an abrasive phenomenon of comprehensive destructive effects of corrosion and friction. In order to ensure the normal operation of the equipment, anti-corrosion measures should be taken for the wetted parts of the equipment, and surface coating with anti-corrosion paint is a common method. Although the existing anti-corrosion coatings, su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/02C09D127/06C09D5/08
Inventor 沈福昌
Owner 沈福昌
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