Coating process: production process of corn starch glue by oxidation

Key tips: 1 Formula: Raw material consumption / quality parts corn starch 100 parts 30% hydrogen peroxide 5 parts caustic soda 10 parts urea formaldehyde resin glue (solid content 30% ~ 40%), 5 ~ 8 parts ferrous sulfate (catalyst), 0.01 parts sodium thiosulfate (oxidation termination agent), 2 parts water about 900 parts 2 Production process: ① Prepare the heating reactor and other equipment, and prepare all raw materials in the formula ② Dilute the UF glue Add water of the same weight as the urea formaldehyde resin glue into the spare bucket, and add the urea formaldehyde resin glue in the formula Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Paint Home News: 1 Formula: raw material amount / quality share corn starch 100 share 30% hydrogen peroxide 5 share caustic soda 10 share urea formaldehyde resin glue (solid content 30% - 40%), 5-8 share ferrous sulfate (catalyst) 0.01 share sodium thiosulfate (oxidation termination agent) 2 share water about 900 share 2 Production process: ① Prepare the heating reactor and other equipment, and prepare all raw materials in the formula ② Dilute the UF glue Add water with the same weight as the urea formaldehyde resin glue into the spare bucket, and mix the urea formaldehyde resin glue in the formula evenly to obtain the urea formaldehyde resin glue diluent for standby ③ Make caustic soda glue Add 90 parts of water and 10 parts of caustic soda into the mixing drum, fully mix to make it completely dissolved (to prevent splashing of caustic water from injuring people), and obtain 10% alkaline water solution for standby ④ Dilute hydrogen peroxide 5 parts of hydrogen peroxide can be diluted evenly with 5 parts of water ⑤ 800 parts of water were added to the reactor, the temperature was raised to about 55 ℃, and the pH value was adjusted to 9-10 with 10% caustic soda water solution Corn starch was added while stirring to make it a uniform powder ⑥ After mixing, the slurry is slightly viscous At this time, add the diluted hydrogen peroxide for oxidation reaction In order to make the oxidation fully and quickly, add the catalyst ferrous sulfate solution at the same time After these materials are added, the reaction lasts for 3 hours ⑦ After oxidation, add caustic soda water with concentration of 10% in a trickle way, mix and change to add, control to add for 0.5h, at this time, the material has become translucent and good fluidity glue ⑧ After alkali water is added, sodium thiosulfate is added to stop the oxidation Then add the diluted urea formaldehyde resin glue to the stirred glue slowly After that, the viscous glue with good gum, i.e modified corn starch glue, was prepared by stirring at 60 ℃ for 1h, and then discharged, canned and standby 3 Application: this glue can be used as auxiliary glue for low cost coating (the formula of this article is for reference only) coatings home is focused on the news and information of coatings, diatom mud, paint coatings, coating technology, fire retardant coatings, coatings, diatom mud, paint coatings, coating technology, decoration knowledge and decoration effect map of fire retardant coatings,