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, p

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] In a four-necked flask with a stirrer and a reflux condenser, add 50 mL soybean oil, 10 mL formic acid, 20 mL 20% hydrogen peroxide and 30 mL 75% sulfuric acid solution, start the stirrer, and set it at 200 r / min Stir at a speed of 90°C, heat up to 90°C, and react for 2.0h to obtain the reaction product. The reaction product is transferred to a separatory funnel, washed with water until the washing liquid is neutral, and the water phase is discarded to obtain epoxy soybean oil for use; take 80g Put the asbestos fiber and 220 g of 3% acetic acid solution in a three-necked flask, let stand for 10 minutes, and then add 20g of maleic anhydride to the three-necked flask, and place the three-necked flask in a water bath, and control the temperature of the water bath to 70°C. Stir at a speed of 200r / min for 30min; after stirring, add N,N-dimethylformamide and epoxidized soybean oil to the above three-neck flask at a mass ratio of 2:5, and heat to 90°C at 100r / m...

Example Embodiment

[0028] 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 20% hydrogen peroxide and 35 mL of 75% sulfuric acid solution. Start the stirrer at 210 r / min. Stir at a rotating speed of 90°C, heat to 92°C, keep the temperature for 2.2 hours, and obtain the reaction product. Transfer the reaction product to a separatory funnel. Wash with water until the washing liquid is neutral. Discard the water phase to obtain epoxy soybean oil for use; take 85g Put asbestos fiber and 235g of 3% acetic acid solution in a three-necked flask, let stand for 12min, then add 22g of maleic anhydride into the three-necked flask, and place the three-necked flask in a water bath, and control the temperature of the water bath to 75℃. Stir at 250r / min for 32min; after stirring, add N,N-dimethylformamide and epoxidized soybean oil to the above three-neck flask at a mass ratio of 2:5, and heat to 92°C at 120r / min The reaction...

Example Embodiment

[0030] 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 20% hydrogen peroxide and 40 mL of 75% sulfuric acid solution, and start the stirrer at 220r / min Stir at a high speed, heat to 95°C, keep the temperature for 2.5 hours, and obtain the reaction product. Transfer the reaction product to a separatory funnel. Wash with water until the washing liquid is neutral. Discard the water phase to obtain epoxy soybean oil for use; take 90g Put the asbestos fiber and 250g of 3% acetic acid solution in a three-necked flask, let stand for 15min, then add 25g of maleic anhydride into the three-necked flask, and place the three-necked flask in a water bath, and control the temperature of the water bath to 80℃. Stir at 300r / min for 35min; after stirring, add N,N-dimethylformamide and epoxidized soybean oil to the above three-necked flask at a mass ratio of 2:5, and heat to 95°C at 150r / min The reaction pro...

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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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