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Modified cross-linked polyamide polyamine cylinder adhesive applicable to low temperature and preparation method thereof

A technology of polyamide polyamine and sticking agent, which is applied in the field of sticking agent for papermaking, which can solve the problems of hard coating, etc., and achieve the effect of reducing energy consumption and saving costs

Active Publication Date: 2021-08-24
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

Benefits of technology

The technical effect of this patented modification made from specific types of polymer called PolyAmidopolyimides (PAI) are that it allows for quick formation of coatings on various materials without causing damage like rashes when used together due to its ability to form strong bonds between different parts of each material. This results in improved durability over time compared to traditional methods such as dichroicsor other chemicals. Additionally, PAIs have both reactive functions - an ester linkage attached to their main chain ends – allowing them to undergo rapid curing processes upon exposure to low temperatures. These modifications also reduce energy usage cost but they may cause environmental concerns related to potential hazards associated therewith.

Problems solved by technology

Technics: Current methods for producing rubbing clothings involve adding chemical substances like silane onto an absorbent material called yarn beforehand. These processes require expensive equipment such as steam generators, doctor blades, and rotary drums. Additionally, these techniques result in weakened coatings over longer periods of storage causing damage to papermakers' fabrics. Therefore there needs a more efficient method of making rubberized clothes without requiring costly materials while also providing sufficient strength and protection against environmental factors like humidity.

Method used

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  • Modified cross-linked polyamide polyamine cylinder adhesive applicable to low temperature and preparation method thereof
  • Modified cross-linked polyamide polyamine cylinder adhesive applicable to low temperature and preparation method thereof
  • Modified cross-linked polyamide polyamine cylinder adhesive applicable to low temperature and preparation method thereof

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preparation example Construction

[0027] The preparation of solid content 37% polyamide polyamine prepolymer:

[0028] Add 491.4g of diethylenetriamine to the four-necked flask, and add 672.57g of adipic acid into the four-necked flask at a uniform speed under stirring, control the speed of the added adipic acid so that the adipic acid can be dispersed uniformly in the bottle, add After the adipic acid is controlled to raise the temperature in the oil bath stage, observe and record the temperature in the bottle, build a distillation device, control the temperature at 175°C, and observe the situation in the bottle to see if water is coming out, record the time of water coming out, and keep it warm for 6 hours after the water is out, and the receiving system is evaporated The moisture that goes out is also recorded by weighing; After the reaction finishes, weigh the Erlenmeyer flask weight and record, add 846g deionized water to terminate the reaction, finally add 866g deionized water to adjust the polyamide poly...

Embodiment 1

[0030] Put 320g of polyamide polyamine prepolymer with a solid content of 37% in a four-necked bottle, start mechanical stirring, set the rotation speed at 180r / min, set the reaction temperature at 60°C, and add 1.84g of it dropwise when the system temperature reaches the set temperature. The joint agent GMA was kept at this temperature for 3 hours until the viscosity of the system was stable and did not continue to increase. Then 85% phosphoric acid was added to adjust the pH to 7.5 to terminate the reaction, and 470 g of deionized water was added to stir and store for later use.

Embodiment 2

[0032] Put 320g of polyamide polyamine prepolymer with a solid content of 37% in a four-necked bottle, start mechanical stirring, set the rotation speed at 180r / min, set the reaction temperature at 60°C, and add 3.69g of it dropwise when the system temperature reaches the set temperature. The joint agent GMA is kept at this temperature for 3 hours until the viscosity of the system is stable and does not continue to increase. Add 85% phosphoric acid to adjust the pH=7.5 to terminate the reaction and add 470g of deionized water to stir and store for later use.

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Abstract

The invention discloses a modified cross-linked polyamide polyamine cylinder adhesive applicable at low temperature, which is prepared by cross-linking secondary amine of polyamide polyamine and epoxy group of glycidyl methacrylate to prepare a modified polyamide polyamine prepolymer, and compounding the modified polyamide polyamine prepolymer with a plasticizer and a pH regulator. The adhesive is applied to toilet paper wrinkling, a coating can be rapidly established at a low temperature, the coating has high-level adhesive force and certain water resistance, a series of problems caused by hardening of the wrinkled coating can be solved, energy consumption is reduced to a certain extent, and cost is saved to a certain extent.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Owner 济宁南天农科化工有限公司
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