A kind of epoxy modified polyamide polyamine cylinder sticking agent and preparation method thereof

A polyamide polyamine and epoxy modification technology, which is used in the field of sticking agent for papermaking, can solve the problems of hardening of the coating of the sticking agent, and achieve the effect of high adhesion and solving the problem of high temperature hardening.

Active Publication Date: 2022-04-01
济宁南天农科化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to fundamentally solve the problem that the coating of the sticking agent becomes hard, the present invention prepares a sticking agent with a softer skeleton, which can still maintain soft characteristics at high temperatures. The present invention uses dimer acid A polyamide polyamine prepolymer obtained by polycondensation with diethylenetriamine, and then cross-linked with polyethylene glycol diglycidyl ether to prepare a new type of cylinder sticking agent

Method used

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  • A kind of epoxy modified polyamide polyamine cylinder sticking agent and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] Weigh 320 g of polyamide polyamine prepolymer and place it in a four-necked bottle, start mechanical stirring, set the rotation speed at 180 r / min, set the reaction temperature at 80°C, and drop 5.12g of XY- 205, keep warm at this temperature for 2 hours, until the viscosity of the system is stable and does not continue to increase, add 85% phosphoric acid to adjust pH = 9.5 to terminate the reaction, add 470g of deionized water, stir and store for later use.

Embodiment 2

[0033] Weigh 320 g of polyamide polyamine prepolymer and place it in a four-necked bottle, start mechanical stirring, set the rotation speed at 180 r / min, set the reaction temperature at 80°C, and drop 7.68g of XY- 205, keep warm at this temperature for 2 hours, until the viscosity of the system is stable and does not continue to increase, add 85% phosphoric acid to adjust pH = 9.5 to terminate the reaction, add 470g of deionized water, stir and store for later use.

Embodiment 3

[0035] Weigh 320 g of polyamide polyamine prepolymer and place it in a four-necked bottle, start mechanical stirring, set the rotation speed at 180 r / min, set the reaction temperature at 80°C, and drop 10.24g XY- 205, gel about 30 minutes after adding XY-205.

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Abstract

The invention discloses an epoxy-modified polyamide polyamine cylinder sticking agent and a preparation method thereof. Alcohol diglycidyl ether is cross-linked and modified, and compounded with additives. The cylinder sticking agent of the invention has a softer molecular skeleton, which solves the problem that the coating of the cylinder sticking agent becomes hard at high temperature. The cylinder sticking agent coating of the invention can still keep softness without cracking under high temperature baking, and has a relatively high level of cohesive force.

Description

technical field [0001] The invention belongs to the technical field of cylinder sticking agents for papermaking, and in particular relates to the modification technology of polyamide polyamine cylinder sticking agents. Background technique [0002] Cylinder sticking agent is an essential chemical additive in the creping process of household paper. Cylinder sticking agent is mixed with release agent and improver and then sprayed on the Yankee dryer to build a coating. The coating has a certain adhesion to stick the wet paper web to the surface of the dryer, and the coating can protect the surface of the Yankee dryer and the creping doctor from damage. Among them, the performance of the sticking agent is very important to the creping process. A good coating should have high adhesion, good water resistance and no hardening at high temperatures. [0003] At present, the commonly used sticking agent is PAE type sticking agent. The coating tends to become very hard during actual...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08G69/34C08G69/48C09D177/08
CPCC08G69/34C08G69/48C09D177/08
Inventor李诗萃张宗举赵志松李陶伟黄军马朴郭丽芳杨云艳
Owner济宁南天农科化工有限公司