Preparation method of graphene modified flame-retardant waterborne polyurethane coating and adhesive

A water-based polyurethane, graphene modification technology, applied in the direction of polyurea/polyurethane coatings, polyurea/polyurethane adhesives, adhesives, etc. The effect of releasing and suppressing the spread of flames

Active Publication Date: 2020-05-08
中炬高新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polyurethane anti-static anti-corrosion coating provided by it has a certain elongation and can avoid the influence of water vapor. It can be applied in an environment above 0°C and below a relative humidity of 95%. The static conductive performance is long-lasting, but its conductive resistance is too large , at 10 9 The above needs to be further improved
[0008] The Chinese patent application with the application number 201510216196.2 discloses a method for preparing a flame-retardant water-based polyurethane coating and an adhesive. In a 500ml four-necked flask equipped with a stirring blade, a thermometer, and a condenser tube, polytetrahydrofuran e

Method used

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  • Preparation method of graphene modified flame-retardant waterborne polyurethane coating and adhesive
  • Preparation method of graphene modified flame-retardant waterborne polyurethane coating and adhesive
  • Preparation method of graphene modified flame-retardant waterborne polyurethane coating and adhesive

Examples

Experimental program
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Example Embodiment

[0034] Example 1

[0035] (1) Preparation of MOFs: Add 12 g of ammonium molybdate, 0.6 g of nano silver, and 1.6 g of 1,5-naphthalenedisulfonic acid to 20 g of terephthalic acid and 60 g of deionized water, and stir at 50°C for 30 min. Transfer the obtained liquid to an autoclave, stir and react at 180°C for 2h, filter, and wash with 80ml water once to obtain a powder, and place it in an oven to dry at 80°C for 24h;

[0036] (2) Preparation of flame retardant MOFs compound: add 60g of dimethyl phosphite into the reaction vessel, then add 1.2g of sodium methoxide and increase the temperature to 75℃, after the sodium methoxide is completely dissolved, add 65g of acrylamide and triene 0.1g of propyl isocyanurate, 0.4g of allyl triisopropylsilane, 0.1g of acrylic hydroxamic acid, 0.2g of diethyl malonate, cooled to 50°C, heated and stirred for 2 hours to obtain an intermediate ; Add to the intermediate the MOFs obtained in step (1) is 3.2g, hydroxylated graphene 0.05g, react at 60 ℃ f...

Example Embodiment

[0042] Example 2

[0043] (1) Preparation of MOFs: Add 14g of ammonium molybdate, 0.7g of nano silver, and 3.4g of 1,5-naphthalenedisulfonic acid to 20g of terephthalic acid and 60g of deionized water, and stir at 60°C for 60min, Transfer the obtained liquid to an autoclave, stir and react at 200°C for 3h, filter, and wash with 80ml water once to obtain a powder, and place it in an oven to dry at 80°C for 24h;

[0044] (2) Preparation of flame-retardant MOFs compound: add 60g of dimethyl phosphite into the reaction vessel, then add 1.8g of sodium methoxide and increase the temperature to 95℃, after the sodium methoxide is completely dissolved, add 85g of acrylamide and triene 0.7g of propyl isocyanurate, 0.7g of allyltriisopropylsilane, 0.6g of acryl hydroxamic acid, 0.3g of diethyl malonate, cooled to 70°C, and reacted for 5h with heat preservation and stirring to obtain an intermediate ; Add to the intermediate the MOFs obtained in step (1) is 4.6g, hydroxylated graphene 0.1g, r...

Example Embodiment

[0050] Example 3

[0051] (1) Preparation of MOFs: Add 13 g of ammonium molybdate, 0.65 g of nano silver, and 2.5 g of 1,5-naphthalenedisulfonic acid to 20 g of terephthalic acid and 60 g of deionized water, and stir at 55°C for 45 minutes. Transfer the obtained liquid to an autoclave, treat it at 190°C for 2.5h, filter, and wash with 80ml of water once to obtain a powder, and place it in an oven to dry at 80°C for 24h;

[0052] (2) Preparation of flame-retardant MOFs compound: add 60g of dimethyl phosphite into the reaction vessel, then add 1.5g of sodium methoxide and increase the temperature to 85℃, after the sodium methoxide is completely dissolved, add 75g of acrylamide and triene 0.55 g of propyl isocyanurate, 0.55 g of allyl triisopropyl silane, 0.35 g of acrylic hydroxamic acid, 0.25 g of diethyl malonate, cooling to 60° C., holding and stirring for 3.5 hours to obtain the intermediate Body; Add the MOFs obtained in step (1) to the intermediate is 3.9g, hydroxylated graphe...

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Abstract

The invention relates to a preparation method of a graphene modified flame-retardant waterborne polyurethane coating and adhesive. The preparation method comprises the following steps: preparing a flame-retardant MOFs compound from MOFs, preparing a flame-retardant MOFs dispersion liquid from the flame-retardant MOFs compound, and finally preparing the polyurethane coating and adhesive from polymer polyol, isocyanate, dibutyltin dilaurate and the flame-retardant MOFs dispersion liquid. The effect of improving the two important indexes of flame retardance and static prevention of the polyurethane coating and the adhesive is outstanding.

Description

technical field [0001] The invention relates to the field of functional polymer materials, in particular to a method for preparing graphene-modified flame-retardant water-based polyurethane coatings and adhesives. Background technique [0002] Since the 1950s, my country began to develop and apply polyurethane coatings. With the continuous improvement and improvement of the material living standards of the general public, the development speed of a series of industries such as automobile processing, furniture manufacturing and processing, petrochemical industry, machinery industry, bridge and shipbuilding has been continuously increasing. With its outstanding performance advantages, polyurethane coatings have entered a new stage of rapid development. According to statistics, from 1980 to 2004, the use of polyurethane coatings in various industries has shown a very rapid development trend. The total use of polyurethane coatings has achieved a breakthrough development from 0....

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D175/04C09D5/18C09D5/24C09J175/08C09J175/04C09J11/08C09J11/04C08G83/00C08G18/66C08G18/48C08G18/44C08G18/34
CPCC09D175/04C09D5/18C09J175/04C09J11/08C08G83/008C08L2201/02C08L87/00
Inventor 段宝荣王全杰王辉强刁屾王琦研王雪李兴存唐志海
Owner 中炬高新材料股份有限公司
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