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Graphene oxide modified environment-friendly polyurethane oil-based topcoat and preparation method thereof

A graphene-modified and environmentally friendly technology, applied in the field of polyurethane materials, can solve problems such as difficulty in solvent-free, poor aging resistance, and non-environmental protection, and achieve the effects of improving skeleton structure, excellent aging resistance, and good long-term usability

Active Publication Date: 2021-01-01
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the presence of a large amount of volatile organic solvents in common solvent-based oily polyurethane topcoats, it is not environmentally friendly, consumes a lot of solvent thinners, and has a great poisonous effect on construction workers
The water-based acrylic topcoat basically does not contain organic solvents and has very low VOC, but its abrasion resistance, strength and service life are not as good as oily polyurethane topcoats.
[0004] However, oily polyurethane topcoats also have certain problems. It is difficult for industrialized oily polyurethane topcoats to be solvent-free, and even if it is done, it will face the disadvantage of poor aging resistance.

Method used

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  • Graphene oxide modified environment-friendly polyurethane oil-based topcoat and preparation method thereof
  • Graphene oxide modified environment-friendly polyurethane oil-based topcoat and preparation method thereof
  • Graphene oxide modified environment-friendly polyurethane oil-based topcoat and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Component A: Put 415g of polyether VORANOL 220-260 with a molecular weight of 400, 100g of dehydrated castor oil and 10g of dispersant YCK-2330 into the reactor, stir at 800 rpm for 15min, then add 10g of graphene oxide (graphite LC50 -9999 prepared by the Hummers method), stirred at 1000 rpm for 10 minutes, then added 20 g of leveling agent YCK-1190, 130 g of iron oxide red 130, 300 g of 4000 mesh talc powder, stirred at 1000 rpm for 15 min, and then added 5 g of organic bismuth Catalyst Kat24 and 5g defoamer RJ-4040, stirred at 1200 rpm for 25 minutes, finally added 5 g of defoamer RJ-4040, stirred at 1800 rpm for 15 minutes, and prepared component A in barrels;

[0033] (2) Component B: react 380g of polyether VORANOL4240 with a molecular weight of 4000 and 720g of isocyanate HMDI at 85°C for 2h to obtain a prepolymer, and the final percentage of isocyanate is 22%.

[0034] (3) During construction, mix component A and component B evenly and then roll coat on the ...

Embodiment 2

[0037] (1) Component A: Put 500g of polyether VORANOL 230-238 with a molecular weight of 700, 50g of dehydrated castor oil and 20g of dispersant YCK-2330 into the reactor, stir at 1000 rpm for 10min, then add 5g of graphene oxide (graphite LC50 -9999 prepared by the Hummers method), stirred at 800 rpm for 15 minutes, then added 14g of leveling agent YCK-1190, 190g of iron oxide red 130, 200g of 4000 mesh talcum powder under stirring, stirred at 800 for 20min, and then added 1g of organic bismuth Catalyst Kat24 and 10g of defoamer RJ-4040, stirred at 1500 rpm for 20 minutes, finally added 10 g of defoamer RJ-4040, stirred at 1500 rpm for 20 minutes, and prepared component A in barrels;

[0038] (2) Component B: 320 g of polyether VORANOL4701 with a molecular weight of 5000 and 680 g of isocyanate HMDI were reacted at 75° C. for 2.5 hours to obtain a prepolymer, and the final percentage of isocyanate was 21%.

[0039] (3) During construction, mix component A and component B even...

Embodiment 3

[0042] (1) Component A: Put 469g of polyether VORANOL 2110TB with a molecular weight of 1000, 70g of dehydrated castor oil and 15g of dispersant YCK-2330 into the reactor, stir at 900 rpm for 13min, then add 1g of graphene oxide (graphite LC50-9999 Prepared by the Hummers method), stirred at 900 rpm for 13 minutes, then added 10 g of leveling agent YCK-1190, 160 g of iron oxide red 130, and 250 g of 4000 mesh talcum powder under stirring, stirred at 900 rpm for 18 min, and then added 10 g of organic bismuth catalyst Kat24 and 7.5g of antifoaming agent RJ-4040, stirred at 1400 rpm for 23 minutes, finally added 7.5g of antifoaming agent RJ-4040, stirred at 1600 rpm for 17 minutes, and prepared component A in barrels;

[0043](2) Component B: react 330g polyether VORANOL3010 with a molecular weight of 3000 and 670g isocyanate HMDI at 80°C for 2.3h to obtain a prepolymer, and the final percentage of isocyanate is 20%.

[0044] (3) During construction, mix component A and component...

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Abstract

The invention belongs to the technical field of polyurethane materials, and particularly relates to a graphene oxide modified environmentally-friendly polyurethane oily topcoat and a preparation method thereof. The graphene oxide modified environmentally-friendly polyurethane oily topcoat comprises a component A and a component B, wherein the component A comprises small molecule polyether, a filler, castor oil, a defoamer, graphene oxide, a pigment, a leveling agent, a dispersant and an organic bismuth catalyst, the component B is a prepolymer, and the prepolymer is made of polyether with a molecular weight of 3000-6000 and functionality of 2-3 and 4,4'-dicyclohexylmethane diisocyanate. According to the present invention, the use of the solvent is eliminated during the production and the use, and the product has characteristics of excellent aging resistance, high toughness, super strength and wear resistance.

Description

technical field [0001] The invention belongs to the technical field of polyurethane materials, and in particular relates to a graphene oxide-modified environment-friendly polyurethane oily topcoat and a preparation method thereof. Background technique [0002] Polyurethane oil-based topcoat is widely used in indoor environmental protection ground laying and outdoor hard court laying because of its excellent strength and water resistance, especially in outdoor basketball courts and badminton courts in schools and communities, etc. It is also used in factories, parking lots, etc. field and so on. [0003] Because the common solvent-based oily polyurethane topcoat contains a large amount of volatile organic solvents, it is not environmentally friendly, consumes a lot of solvent thinners, and has a great poisonous effect on construction workers. The water-based acrylic topcoat basically does not contain organic solvents and has very low VOC, but its abrasion resistance, strengt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D7/61C08G18/75C08G18/67C08G18/48C08G18/10
CPCC08G18/10C08G18/48C08G18/758C09D175/14C09D7/61C08K3/042C08G18/6696
Inventor 孙清峰梁玲申建洲李立强王树东
Owner SHANDONG INOV POLYURETHANE
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