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Application of Epoxy-Terminated Organosilicon in Preparation of Cylinder Adhesive

A technology of epoxy-terminated silicone, which is applied in the application field of epoxy-based silicone in the preparation of cylinder sticking agents, can solve the problem of not being able to protect paper knives and Yankee cylinders well, affecting production efficiency, and being easy to break Paper and other issues, to achieve the effect that is beneficial to human health, low pencil hardness, high level of adhesion

Active Publication Date: 2022-07-12
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

[0003] Among them, PAE adhesives account for a high proportion in the adhesive market, but this type of adhesive has major defects. The coating formed by PAE adhesives is relatively hard and cannot protect paper knives and Yankees well. drying cylinder
Under the action of high temperature, PAE cylinder sticking agent is easy to form insoluble and infusible polymer during use, which accumulates on the Yankee dryer, which is easy to break and tear the paper and affect the production efficiency

Method used

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  • Application of Epoxy-Terminated Organosilicon in Preparation of Cylinder Adhesive
  • Application of Epoxy-Terminated Organosilicon in Preparation of Cylinder Adhesive
  • Application of Epoxy-Terminated Organosilicon in Preparation of Cylinder Adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: Preparation of 37% solids prepolymer PP

[0044] Add 360g of diethylenetriamine to the four-necked flask, add 495g of adipic acid into the four-necked flask at a constant speed under stirring, control the speed of the added adipic acid so that the adipic acid can just be dispersed uniformly in the bottle, and after adding the adipic acid. In the oil bath stage, the temperature of the diacid is controlled to observe and record the temperature in the bottle, set up a distillation device, control the temperature at 175 °C, and observe the situation in the bottle to see if there is water out, record the time of water out, and keep the temperature for 6 hours after the water is out. After the reaction is over, weigh the conical flask and record it, add 638g of deionized water to stop the reaction, and finally add 628g of deionized deionized water to adjust the solid content of the prepolymer to 37%. Incubate at 50°C for later use.

Embodiment 2

[0046] Place 280g of prepolymer PP with a solid content of 37% in a four-necked bottle, start mechanical stirring, set the rotating speed to 180r / min, set the reaction temperature to 60°C, and drop 6.42g of end rings when the system temperature reaches the set temperature. Oxyorganosilicon (17.7mmol) MY-010 was kept at this temperature for 3h until the viscosity of the system was stable and did not continue to increase. After the reaction, 194g of deionized water was added to stir uniformly, and finally 30% sulfuric acid was added to adjust pH2.5.

Embodiment 3

[0048] Place 280g of prepolymer PP with a solid content of 37% in a four-necked bottle, start mechanical stirring, set the rotating speed to 180r / min, set the reaction temperature to 60°C, and drop 6.42g of end rings when the system temperature reaches the set temperature. Oxyorganosilicon (17.7mmol) MY-010 was kept at this temperature for 3h until the viscosity of the system was stable and did not continue to increase. After the reaction, 194g of deionized water was added to stir uniformly, and finally 30% sulfuric acid was added to adjust pH4.5.

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Abstract

The invention discloses the application of epoxy-terminated organosilicon in preparing a cylinder sticking agent. The invention uses the epoxy-terminated organosilicon instead of epichlorohydrin to prepare the cylinder sticking agent not only has a higher level of cohesion, but also has a low pencil hardness and a relatively soft coating, which can well protect the drying cylinder and the paper knife; In addition, it can remain soft for a long time at high temperature, reducing the risk of hard coating and yellow edge of the paper web during use; at the same time, it can adapt to a wide pH environment, and it is better under acidic and alkaline conditions. performance effect.

Description

technical field [0001] The invention relates to the field of a cylinder sticking agent, in particular to the application of an epoxy-terminated organosilicon in the preparation of a cylinder sticking agent. Background technique [0002] With the improvement of living standards, the market has higher requirements for the feel of tissue paper, and one of the ways to obtain a good feel of tissue paper is to wrinkle. The creping process of paper can improve paper softness, water absorption, bulk and other properties. The crimping agent used in the creping process is one of the key factors for the creping effect and production rate. The crimping agent is combined with a release agent and a modifier to form a creping agent, which is sprayed onto the Yankee dryer under the action of heat. form a coating. The formed coating has a certain adhesive force, which sticks the wet paper web to the Yankee dryer, and the paper web continues to dry while the Yankee dryer rotates. The dried...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/14D21H19/10D21H17/55D21H17/13D21H17/59C08G69/26
CPCD21H21/14D21H19/10D21H17/55D21H17/13D21H17/59C08G69/26Y02P20/141
Inventor 张宗举李陶伟赵志松李诗萃黄军马朴郭丽芳
Owner 济宁南天农科化工有限公司