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Preparation method of high-temperature-resistant high-humidity-resistant binder for packaging

A packaging and adhesive technology, applied in the directions of non-polymer adhesive additives, adhesives, adhesive types, etc., can solve the problem that the high temperature and high humidity performance cannot meet the application requirements of retort food packaging, and the curing temperature of the adhesive High temperature and poor flexibility, etc., to achieve the effect of maintaining heat resistance, increasing high temperature and high humidity resistance, and improving toughness

Inactive Publication Date: 2018-12-11
FOSHAN GAOMING DISTRICT ZHUAHE NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main technical problem to be solved by the present invention is to provide a high-temperature-resistant adhesive for the defects that the current packaging adhesive has a high curing temperature, poor flexibility after curing, and its high-temperature and high-humidity resistance cannot meet the application requirements of retort food packaging. Preparation method of binder for high-humidity packaging

Method used

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  • Preparation method of high-temperature-resistant high-humidity-resistant binder for packaging

Examples

Experimental program
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Effect test

example 1

[0027]In a four-necked flask with a stirrer and a reflux condenser, add 50 mL of soybean oil, 10 mL of formic acid, 20 mL of hydrogen peroxide with a mass fraction of 20% and 30 mL of a sulfuric acid solution with a mass fraction of 75%, start the stirrer, and set the temperature at 200r / min Stir at a constant speed, heat up to 90°C, and keep warm for 2.0 hours to obtain a reaction product. Move the reaction product into a separatory funnel, wash with water until the washing liquid is neutral, discard the water phase, and obtain epoxidized soybean oil, which is set aside; take 80g Asbestos fiber and 220g mass fraction are that 3% acetic acid solution is put in the there-necked flask, leave standstill 10min, then add 20g maleic anhydride in the there-necked flask, and the three-necked flask is placed in the water-bath pot, control water-bath temperature to be 70 ℃, with Stir at a speed of 200r / min for 30min; after stirring, add N,N-dimethylformamide and epoxidized soybean oil in...

example 2

[0029] In a four-necked flask with a stirrer and a reflux condenser, add 55 mL of soybean oil, 11 mL of formic acid, 22 mL of hydrogen peroxide with a mass fraction of 20% and 35 mL of a sulfuric acid solution with a mass fraction of 75%, and start the stirrer at 210r / min Stir at a constant speed, heat up to 92°C, and keep warm for 2.2 hours to obtain a reaction product. Move the reaction product into a separatory funnel, wash with water until the washing liquid is neutral, discard the water phase, and obtain epoxidized soybean oil for later use; take 85g Asbestos fiber and 235g mass fraction are that 3% acetic acid solution is put into there-necked flask, leave standstill 12min, then add 22g maleic anhydride in there-necked flask, and three-necked flask is placed in water-bath, control water-bath temperature to be 75 ℃, with Stir at a speed of 250r / min for 32min; after stirring, add N,N-dimethylformamide and epoxidized soybean oil into the above-mentioned three-necked flask ac...

example 3

[0031] In a four-necked flask with a stirrer and a reflux condenser, add 60 mL of soybean oil, 12 mL of formic acid, 25 mL of hydrogen peroxide with a mass fraction of 20% and 40 mL of a sulfuric acid solution with a mass fraction of 75%, start the stirrer, and set the temperature at 220r / min Stir at a constant speed, heat up to 95°C, and keep the temperature for 2.5 hours to obtain a reaction product. Move the reaction product into a separatory funnel, wash with water until the washing liquid is neutral, discard the water phase, and obtain epoxidized soybean oil, which is set aside; take 90g Asbestos fiber and 250g mass fraction are that 3% acetic acid solution is put into the there-necked flask, leave standstill 15min, then add 25g maleic anhydride in the there-necked flask, and the three-necked flask is placed in the water-bath pot, control water-bath temperature to be 80 ℃, with Stir at a speed of 300r / min for 35min; after stirring, add N,N-dimethylformamide and epoxidized ...

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Abstract

The invention discloses a preparation method of a high-temperature-resistant high-humidity-resistant binder for packaging, belonging to the technical field of preparation of binders. According to thepreparation method, the soybean oil is oxidized under acidic conditions to obtain epoxidized soybean oil, the silicon hydroxyl of asbestos fiber is exposed by acid etching, the asbestos fiber is grafted by maleic anhydride, and the asbestos fiber is subjected to surface modification through the epoxidized soybean oil, high temperature, high humidity resistance and toughness are improved, and the water droplets formed by liquefaction of the surface of the film in high temperature and high humidity air will be quickly dried. According to the invention, the modified epoxy resin is toughened by polybutadiene rubber powder, the toughened modified epoxy resin is composed of epoxy resin and rubber particles, the rubber particles are of a core-shell structure, and the rubber particles of the core-shell structure are evenly distributed. The improvement effect on the toughness and strength is remarkable, the activation energy per unit volume of the epoxy glue is reduced, and the maleic anhydridecan be cured and crosslinked with the epoxy resin at a low temperature, so that the binder can be cured at a lower temperature. Therefore, the preparation method has a broad prospect.

Description

technical field [0001] The invention discloses a method for preparing an adhesive for high-temperature and high-humidity packaging, and belongs to the technical field of adhesive preparation. Background technique [0002] The binder is the guarantee of the bonding strength between the abrasive and the matrix. With the development of the chemical industry, various new binders have entered the field of coated abrasives, which has improved the performance of coated abrasives and promoted the development of the coated abrasives industry. In addition to the glue, the adhesive also includes auxiliary components such as solvents, curing agents, toughening agents, preservatives, colorants, and defoamers. Binders include synthetic resins, rubber, and paint, in addition to the most commonly used animal glue. [0003] Packaging adhesives are produced and developed on the basis of the rapid development of the packaging industry. The performance and quality of packaging adhesives direc...

Claims

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Application Information

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IPC IPC(8): C09J175/04C09J109/00C09J127/06C09J11/06C09J11/04
CPCC08K2003/2227C08K2003/265C08K2201/011C08K2201/014C08L2201/08C08L2205/03C09J11/04C09J11/06C09J175/04C08L9/00C08L27/06C08K13/02C08K3/36C08K3/26C08K3/22C08K5/47
Inventor 胡次兵邓博朱彩娣
Owner FOSHAN GAOMING DISTRICT ZHUAHE NEW MATERIAL TECH CO LTD
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