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Method for preparing waterborne ultraviolet curing coating

A technology of curing coatings and ultraviolet light, which is applied in the direction of anti-corrosion coatings, fire-proof coatings, lignin coatings, etc., can solve the problems of poor wear resistance, heat resistance, poor corrosion resistance, high curing energy consumption, etc., and achieve heat resistance Good performance, good corrosion resistance, easy to obtain raw materials

Inactive Publication Date: 2016-12-21
宁波高智科技咨询服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the present invention: in view of the defects of poor heat resistance and corrosion resistance, high curing energy consumption and poor wear resistance in the current traditional ultraviolet curing coatings, the present invention combines konjac block with deionized Water was ultrasonically oscillated and centrifuged, hydrogen peroxide solution was added to stir, and ammonium persulfate water bath was added, and then filtered, the filtrate was stirred with glycerin and methanesulfonic acid and reacted in an oil bath, extracted with ethyl acetate, concentrated and dried to obtain a solid for use. Take the Schima superba branch and grind it, soak it in absolute ethanol, add N-methylpyrrolidone and other reactions, stir it with the spare solid and mixed resin, and then add butyl hydroxyanisole and other additives to obtain the water-based UV-curable coating. Examples have proved that after the material is coated with the obtained coating, the working condition is excellent under high temperature, high acid and alkali conditions, and the surface of the coating film is smooth and flat during the use of the coating, which can meet the needs of self-curing, and the curing time and energy consumption are relatively traditional. The paint is reduced by 50-80%, which has better use value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021]First weigh 20g of konjac pieces and add them to a beaker, add 100mL of deionized water, place in an ultrasonic oscillator, ultrasonicate at 60°C and 220W for 30min, then place in a centrifuge, and centrifuge at 3000r / min for 30min. Separate and remove the precipitate to obtain the konjac extract; add the above konjac extract into a beaker, place the beaker in a water bath, heat up to 40°C, then add 60mL of 30% hydrogen peroxide solution, stir for 1h, and then heat up to 80°C, then add 2g of ammonium persulfate, keep warm for 2h, filter, and collect the filtrate; add the above filtrate into a three-necked flask with a thermometer and a reflux device, place the flask in an oil bath, heat up to 120°C, and then Add 10g of glycerin and 1g of methanesulfonic acid in sequence, stir for 2h, and when the reaction is over, extract with 100mL of ethyl acetate, collect the extract, and distill it under reduced pressure to 1 / 4 of the original volume, then dry at 95°C for 2h , to obt...

example 2

[0024] First, weigh 25g of konjac pieces and add them to a beaker, add 150mL of deionized water, place in an ultrasonic oscillator, ultrasonicate at 65°C and 230W for 35min, then place in a centrifuge, and centrifuge at 3500r / min for 35min. Separate and remove the precipitate to obtain the konjac extract; add the above konjac extract into a beaker, place the beaker in a water bath, heat up to 45°C, then add 65mL of 30% hydrogen peroxide solution, stir for 1.5h, and then heat up To 85°C, add 3g of ammonium persulfate, keep warm for 2.5h, filter, and collect the filtrate; add the above filtrate into a three-necked flask with a thermometer and a reflux device, place the flask in an oil bath, and heat up to 125°C , and then add 15g glycerin and 2g methanesulfonic acid in turn, and stir for 2.5h to react. After the reaction is completed, extract with 150mL ethyl acetate, collect the extract, and carry out vacuum distillation to 1 / 4 of the original volume, and then place it at 100°C ...

example 3

[0027] First weigh 30g of konjac pieces and add them to a beaker, add 200mL of deionized water, place in an ultrasonic oscillator, ultrasonicate at 70°C and 240W for 40min, then place in a centrifuge, and centrifuge at 4000r / min for 40min. Separate and remove the precipitate to obtain the konjac extract; add the above konjac extract into a beaker, place the beaker in a water bath, heat up to 50°C, then add 70mL of 30% hydrogen peroxide solution, stir for 2h, and then heat up to 90°C, then add 4g of ammonium persulfate, keep warm for 3h, filter, and collect the filtrate; add the above filtrate into a three-necked flask with a thermometer and a reflux device, place the flask in an oil bath, heat up to 130°C, and then Add 20g of glycerin and 3g of methanesulfonic acid in turn, stir for 3h, and when the reaction is complete, extract with 200mL of ethyl acetate, collect the extract, and distill it under reduced pressure to 1 / 4 of the original volume, then dry at 105°C for 3h , to o...

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Abstract

The invention discloses a method for preparing a waterborne ultraviolet curing coating, and belongs to the technical field of coating preparation. The method comprises the steps that konjac blocks are added into ionized water for ultrasonic oscillation and centrifugation, the mixture is stirred with a hydrogen dioxide solution, and after the mixture is added into an ammonium persulfate water bath, filtering is carried out; filtrate is stirred with glycerinum and methanesulfonic acid for an oil bath reaction, extraction is carried out with ethyl acetate, then concentrating and drying are carried out, and standby solids are obtained; smashed schima root-bark branches are soaked with absolute ethyl alcohol, N-methyl pyrrolidone and the like are added, after reacting, the product is mixed with the standby solids and mixed resin, then butyl hydroxy anisd and other assistants are added, and the waterborne ultraviolet curing coating is obtained. Living examples prove that after a material is coated with the obtained coating, the operating condition is good under high-temperature, high-acid and high-alkali conditions; in the use process of the coating, a coating film is smooth and flat in surface, self curing needs can be met, compared with a traditional coating, the curing time is shortened by 50%-80%, energy consumption is reduced by 50%-80%, and high use value is achieved.

Description

technical field [0001] The invention discloses a preparation method of a water-based ultraviolet light curing paint, which belongs to the technical field of paint preparation. Background technique [0002] UV curing refers to the process in which the photoinitiator absorbs the energy of ultraviolet light to trigger the polymerization and crosslinking reaction between the molecules of the mixed system mainly composed of unsaturated polyester in the prepolymer to obtain a hardened paint film, which is essentially realized by forming chemical bonds. The process of converting a liquid into a solid. The essence of paint curing refers to the process in which the paint is applied to the object to be coated, and then a dry film is formed in a certain way. Compared with the traditional thermal curing process, UV curing has the following three obvious advantages: (1) High efficiency: Compared with the traditional thermal curing which takes several hours, the UV curing time is shorter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D197/02C09D5/08C09D7/12
CPCC09D175/14C08K2201/011C08L2201/08C08L2205/035C08L2205/16C09D5/08C09D5/18C08L97/02C08L1/286C08L91/00C08L83/04C08K13/02C08K2003/2241C08K5/42C08K3/36C08K5/13
Inventor 佟明孟中立陆娜
Owner 宁波高智科技咨询服务有限公司
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