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Hard polyurethane coating and preparation method thereof

A technology of rigid polyurethane and polyurethane, applied in the field of coatings, can solve the problems of poor compatibility between inorganic fillers and polymers, agglomeration, and reduced stability of finished coating films, and achieve the effects of increasing hardness, improving stability and strength, and reducing agglomeration

Inactive Publication Date: 2017-11-24
霍邱金木鱼农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a hard polyurethane coating and a preparation method thereof for the poor compatibility of inorganic fillers and polymers in the prior art, which may easily cause agglomeration and reduce the stability of the finished coating film.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The utility model relates to a hard polyurethane coating, which is composed of a polyurethane main material component and a curing agent component.

[0029] The weight ratio of the polyurethane main material component and the curing agent component is 3:1.3.

[0030] Described polyurethane major component is made up of the raw material of following weight part:

[0031] Polycarbonate diol 110, isophorone diisocyanate 90, initiator 4, triglycidyl isocyanurate 4, carbon nanotube 15, diacetone alcohol 7, emulsifier 1, silane coupling agent kh550 2, tert Butyl hydrodiphenol 1, magnesium aluminum silicate 6, zinc pyrithione 2, stearic acid 3.

[0032] The initiator is azobisisobutyronitrile.

[0033] Described emulsifier is Span 80.

[0034] The preparation method of described polyurethane major component, comprises the following steps:

[0035] (1) Take carbon nanotubes, add them to 60 times its weight in 96% sulfuric acid solution, raise the temperature to 50°C, ultras...

Embodiment 2

[0045] The utility model relates to a hard polyurethane coating, which is composed of a polyurethane main material component and a curing agent component.

[0046] The weight ratio of the polyurethane main material component and the curing agent component is 2:1.

[0047] Described polyurethane major component is made up of the raw material of following weight part:

[0048] Polycarbonate diol 100, isophorone diisocyanate 70, initiator 2, triglycidyl isocyanurate 3, carbon nanotube 10, diacetone alcohol 6, emulsifier 0.3, silane coupling agent kh550 1, tertiary Butyl hydrodiphenol 0.5, magnesium aluminum silicate 4, zinc pyrithione 0.8, stearic acid 2.

[0049] Described initiator is dicumyl peroxide.

[0050] Described emulsifier is Span 80.

[0051] The preparation method of described polyurethane major component, comprises the following steps:

[0052] (1) Take carbon nanotubes, add them to 94% sulfuric acid solution that is 50 times its weight, raise the temperature to...

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Abstract

The invention discloses hard polyurethane coating. The coating comprises a polyurethane main material component and a curing agent component. Carbon nanotubes and aluminium-magnesium silicate are separately treated by organic treatment, mixing is carried out for reaction, so that carbon nanotubes and aluminium-magnesium silicate are effectively combined, agglomeration is effectively reduced, stability of the finished product coating is improved, and at the same time, carbon nanotubes and aluminium-magnesium silicate can effectively improve hardness and impact strength of the finished product coating.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a hard polyurethane coating and a preparation method thereof. Background technique [0002] Polyurethane is an emerging organic polymer material, known as the "fifth largest plastic", and is widely used in many fields of the national economy because of its excellent performance. The product application fields involve light industry, chemical industry, electronics, textile, medical treatment, construction, building materials, automobile, national defense, aerospace, aviation, etc. It is a widely used polymer material, mainly including polyurethane foam, polyurethane elastomer, polyurethane waterproof material, Polyurethane coatings, polyurethane adhesives and polyurethane biomedical materials, etc. Polyurethane has good physical and mechanical properties, wide hardness range, high strength, wear resistance, oil resistance, chemical corrosion resistance, tear resistance, ozone r...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12C08G18/75C08G18/44
CPCC09D175/04C08G18/44C08G18/755C08K3/34C08K5/0091C08K7/24C08K9/04C08K9/06C08K13/06C08K2201/011
Inventor 刘学刚
Owner 霍邱金木鱼农业科技有限公司