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Prepration method of nanometer material capable of improving fire resistance of waterborne polyurethane coating and adhesive

A water-based polyurethane and nanomaterial technology, applied in polyurea/polyurethane coatings, polyurea/polyurethane adhesives, adhesives, etc., can solve problems such as environmental hazards of heavy metals and tin

Active Publication Date: 2015-03-25
成都富安纳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Dibutyltin dilaurate is often used as a catalyst in the synthesis of polyurethane, but since the heavy metal tin is harmful to the environment with the degradation of polyurethane, screening efficient and non-toxic catalysts is a major problem in the synthesis of polyurethane

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0047] (1) Add 3.0g of carbon nanotubes and 250g of concentrated nitric acid into a 500ml three-neck flask, stir at room temperature for 24 hours, then wash with deionized water until the pH of the solution is neutral, dry at 100°C overnight, grind for later use to obtain pretreated carbon nanotubes tube; weigh 1.0 g of pretreated carbon nanotubes, add 60 g of triethylene glycol, ultrasonicate for 5 min, and then add Fe(acac) 3 1.5g, continue to sonicate for 10min, pass in nitrogen, heat until the solution boils, reflux for 0.5h, cool to room temperature, wash with ethanol until colorless, and dry at 80°C overnight to obtain Fe 3 o 4 / CNT carrier; weigh Pd(acac) 2 0.0446g, 0.1135g of 1,2-hexadecane glycol, 20g of dioctyl ether and 0.12g of dipotassium edetate, blowing nitrogen gas, heating to 100°C, adding 0.5g Fe 3 o 4 / CNT carrier, continue to heat to boiling, reflux for 0.5h, cool to room temperature, close the protective gas, filter with suction, wash with absolute etha...

example 2

[0053] (1) Add 3.0g of carbon nanotubes to a 500ml three-neck flask, add 250g of concentrated nitric acid, stir at room temperature for 24 hours, then wash with deionized water until the pH of the solution is neutral, dry at 100°C overnight, and grind to obtain pretreated carbon Nanotubes: Weigh 1.0 g of pretreated carbon nanotubes, add 60 g of triethylene glycol, ultrasonicate for 5 minutes, and then add Fe(acac) 3 1.5g, continue to sonicate for 10min, pass in nitrogen, heat until the solution boils, reflux for 0.5h, cool to room temperature, wash with ethanol until colorless, and dry at 80°C overnight to obtain Fe 3 o 4 / CNT carrier; weigh Pd(acac) 2 0.0446g, 0.1135g of 1,2-hexadecanediol, 20g of dioctyl ether and 0.78g of 3-carboxypyridazine, blow nitrogen, heat to 100°C, add 0.5g Fe 3 o 4 / CNT carrier, continue to heat to boiling, reflux for 0.5h, cool to room temperature, close the protective gas, filter with suction, wash with absolute ethanol until colorless, and dr...

example 3

[0060] (1) Add 3.0g of carbon nanotubes to a 500ml three-neck flask, add 250g of concentrated nitric acid, stir at room temperature for 24 hours, then wash with deionized water until the pH of the solution is neutral, dry at 100°C overnight, and grind to obtain pretreated carbon Nanotubes: Weigh 1.0 g of pretreated carbon nanotubes, add 60 g of triethylene glycol, ultrasonicate for 5 minutes, and then add Fe(acac) 3 1.5g, continue to sonicate for 10min, pass in nitrogen, heat until the solution boils, reflux for 0.5h, cool to room temperature, wash with ethanol until colorless, and dry at 80°C overnight to obtain Fe 3 o 4 / CNT carrier; weigh Pd(acac) 2 0.0446g, 0.1135g of 1,2-hexadecane diol, 20g of dioctyl ether and 0.34g of potassium 2-carboxy-5-nitrobenzenesulfonate, blow nitrogen, heat to 100°C, add 0.5g Fe 3 o 4 / CNT carrier, continue to heat to boiling, reflux for 0.5h, cool to room temperature, close the protective gas, filter with suction, wash with absolute ethano...

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PUM

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Abstract

The invention discloses a prepration method of a nanometer material capable of improving fire resistance of a waterborne polyurethane coating and an adhesive. The method comprises the following steps: mixing polytetrahydrofuran glycol with isophorone diisocyanate, reacting in the presence of a Pd / Fe3O4-CNT catalyst, so as to obtain a polyurethane prepolymer A; adding dimethylolpropionic acid to the polyurethane prepolymer A, and reacting; adding triethylamine and carrying out neutral reaction; adding water and emulsifying, so as to form polyurethane B; adding a nanometer material emulsion C to the polyurethane B; and shearing and stirring under the condition that pH is 7, so as to obtain the prepared waterborne polyurethane coating and adhesive. The polyurethane material is environment-friendly and low in price, and can meet the low-cost requirements of the market.

Description

technical field [0001] The preparation method of polyurethane involved in the present invention particularly relates to a preparation method for improving the flame retardancy of water-based polyurethane coatings and adhesives by nanomaterials. Background technique [0002] Waterborne polyurethane is a polyurethane resin containing hydrophilic groups in the molecular chain of polyurethane, which has a strong affinity with water. It can be dispersed in water and form a stable system by using a specific process. Water-based polyurethane is mainly used in leather finishing, textile printing and dyeing, papermaking, architectural coatings, adhesives, etc. Almost all of the materials involved are flammable materials. If these materials are not treated with flame retardant, they will inevitably become a fire hazard. . The flame retardancy of waterborne polyurethane is one of the important directions of functionalization of waterborne polyurethane. [0003] Nanomaterials that can...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D5/18C09J175/08C09J11/08C09J11/06C09J11/04C08G18/75C08G18/66C08G18/48C08G18/34C08G18/22
CPCC08G18/22C08G18/34C08G18/48C08G18/66C08G18/75C09D5/18C09D175/08C09J11/04C09J11/06C09J11/08C09J175/08C08G18/0823C08G18/10C08G18/348C08G18/4854C08G18/6692C08G18/755C08K3/22C08K9/06C08K2003/2293C09D7/62
Inventor 袁福德
Owner 成都富安纳新材料科技有限公司
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