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Preparation and application of environment-friendly flame-retardant adhesive for cartons

A flame-retardant adhesive, green and environmentally friendly technology, applied in the direction of adhesive types, non-polymer adhesive additives, amylose/amylopectin adhesives, etc. Water absorption deformation, ineffective flame retardant and other problems, to achieve excellent flame retardancy and cohesiveness, easy storage and transportation, low cost effect

Pending Publication Date: 2021-07-23
GUANGZHOU UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have high production cost, complex operation process, and some methods cannot effectively flame retardant
On the other hand, starch is a common carton adhesive, but the processing procedure of ordinary starch glue is relatively complicated. The starch made of modified starch is easy to form agglomerates during the sizing process, and it is not easy to dry after being coated on corrugated cardboard, and the cardboard is easy to absorb water and deform.

Method used

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  • Preparation and application of environment-friendly flame-retardant adhesive for cartons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Weigh 25 g of calcium chloride and add it to 50 g of water, stir and dissolve until clear to obtain a calcium chloride solution.

[0032] (2) Weigh 12.5g of high amylose corn starch (amylose content is 70%), add the solution in (1), and stir evenly to form a starch / salt suspension.

[0033] (3) Heat the suspension in (2) to 75°C while stirring for 2 hours to obtain a transparent colloidal fluid.

[0034] (4) Weigh 5.36g of glycerin, add it to the system in (4), and continue to stir at 75°C for 1 hour to completely blend the glycerin and glue, and cool to room temperature to obtain a flame-retardant adhesive.

[0035] (5) Weigh 10g of flame-retardant adhesive, heat it at 80°C for 30 minutes, until the adhesive becomes fluid, and then apply it on the surface of the cardboard. Then dry the cardboard at 60°C for 20 minutes, and then it can be firmly bonded. At this time, if it is torn forcibly, the paper will be torn and cannot be peeled off from the bonded place.

...

Embodiment 2

[0038] (1) Weigh 60 g of anhydrous calcium chloride solid and add it to 120 g of water, stir and dissolve until clarified to obtain a calcium chloride solution.

[0039] (2) Weigh 25g of high-amylose corn starch (amylose content is 70%), add the solution in (1), and stir evenly to form a starch / salt suspension.

[0040] (3) Heat the suspension in (2) to 90°C while stirring for 1 hour to obtain a transparent colloidal fluid.

[0041] (4) Weigh 5.36g of glycerin, add it into the system in (3), and continue to stir at 90°C for 0.5h to make the glycerin and glue blend completely, and cool to room temperature to obtain a flame retardant adhesive.

[0042] (5) Weigh 10g of flame-retardant adhesive, heat it at 80°C for 30 minutes, until the adhesive becomes fluid, and then apply it on the surface of the cardboard. Then dry the cardboard at 60°C for 20 minutes, and then it can be firmly bonded. At this time, if it is torn forcibly, the paper will be torn and cannot be peeled off fro...

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Abstract

The invention belongs to the field of adhesives, and discloses preparation and application of an environment-friendly flame-retardant adhesive for cartons. The preparation method of the flame-retardant adhesive comprises the following steps: adding high amylose into a calcium chloride solution, uniformly stirring, and heating to obtain a transparent colloidal fluid; and adding glycerol into the transparent colloidal fluid, carrying out heat preservation, stirring and blending, and cooling to obtain the green and environment-friendly flame-retardant adhesive for the carton. The high amylose is natural starch with the high amylose content of more than 50% in starch. The environment-friendly flame-retardant adhesive for the carton is prepared by creatively adopting the high-amylose starch and the glycerol as raw materials, and the flame-retardant adhesive for the carton has flame retardance and can prevent fire disasters while meeting the requirement of carton adhesion.

Description

technical field [0001] The invention belongs to the field of adhesives, in particular to the preparation and application of a green and environment-friendly flame-retardant adhesive for cartons. Background technique [0002] With the vigorous development of e-commerce and express delivery, hundreds of millions of goods are shipped to various places through cartons every day. Cartons are flammable substances, and a large number of cartons are piled up and stored, which can easily cause fire accidents. For example, in 2019, a major fire broke out at Lianfaxing Paper Products Factory in Shenzhen, Guangdong, and the loss was as high as 200 million yuan; during the "Double 11" period in 2019, a courier truck caught fire and 13 tons of courier packages were burned. [0003] In order to avoid fire accidents of cartons in the factory building and during transportation, it is necessary to carry out flame retardant treatment on them. Most of the current flame retardant cartons are s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/12C09J11/04C09J11/06
CPCC09J103/12C09J11/04C09J11/06C08K2003/162C08K5/053C08K3/16
Inventor 刘鹏凌建娣李明谢丰蔚
Owner GUANGZHOU UNIVERSITY
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