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High mechanical performance spray elastomer

An elastomer and mechanical technology, applied in the field of spraying elastomers, can solve problems such as weak adhesion and poor mechanical properties of aliphatic polyurea, and achieve high elongation at break, high film-forming efficiency, and excellent color retention Effect

Active Publication Date: 2018-05-22
哈威光电科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of poor mechanical performance and color retention effect and slow film-forming speed of crystalline waterproof materials due to technical defects, the present invention provides a spray-coated elastomer with high mechanical performance, which is formed by polyaspartic acid ester resin and isocyanate group. The reaction and the reaction of hydroxyl-terminated polyether or amino-terminated polyether with aliphatic isocyanate can effectively solve the problems of poor mechanical properties and weak adhesion of aliphatic polyurea. The present invention has excellent physical and mechanical properties, high adhesion, And it has excellent color retention under ultraviolet light, and can be used as a topcoat material for a long time

Method used

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  • High mechanical performance spray elastomer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The high-mechanical performance spraying elastomer provided by the present invention includes component A and component B in a weight ratio of 1:1.5, wherein the weight percentage is

[0044] The composition proportion of group A is:

[0045] Hydroxyl-terminated polyether or amino-terminated polyether 20%,

[0046] Isophorone Polyisocyanate 20%,

[0047] HDI biuret polyisocyanate 30%,

[0048] Solvent 30%,

[0049] The composition ratio of component B is:

[0050] Aliphatic isocyanate 15%,

[0051] Amino-terminated polyether 15%,

[0052] Aliphatic chain extender 15%,

[0053] Polyaspartic Ester Resin 20%,

[0054] Pigment and filler 15%,

[0055] Auxiliary 3%,

[0056] Solvent 17%.

Embodiment 2

[0058] The high-mechanical performance spraying elastomer provided by the present invention includes component A and component B in a weight ratio of 1:1.5, wherein the weight percentage is

[0059] The composition proportion of group A is:

[0060] Hydroxyl-terminated polyether or amino-terminated polyether 19%,

[0061] Isophorone Polyisocyanate 21%,

[0062] HDI Biuret Polyisocyanate 31%,

[0063] Solvent 29%,

[0064] The composition ratio of component B is:

[0065] Aliphatic isocyanate 16%,

[0066] Amino-terminated polyether 14%,

[0067] Aliphatic chain extender 15%,

[0068] Polyaspartic resin 19%,

[0069] Pigment and filler 15%,

[0070] Auxiliary 4%,

[0071] Solvent 17%.

Embodiment 3

[0073] The high-mechanical performance spraying elastomer provided by the present invention includes component A and component B in a weight ratio of 1:1.5, wherein the weight percentage is

[0074] The composition proportion of group A is:

[0075] Hydroxyl-terminated polyether or amino-terminated polyether 21%,

[0076] Isophorone Polyisocyanate 19%,

[0077] HDI biuret polyisocyanate 32%,

[0078] Solvent 28%,

[0079] The composition ratio of component B is:

[0080] Aliphatic isocyanate 14%,

[0081] Amino-terminated polyether 16%,

[0082] Aliphatic chain extender 15%,

[0083] Polyaspartic resin 19%,

[0084] Pigment and filler 15%,

[0085] Auxiliary 4%,

[0086] Solvent 17%.

[0087]This product is prepared with reference to the above proportions. First, put the component A in a gravity-free mixer for stirring, stir for 30 minutes to make it evenly mixed, and pack it as component A; put the component B in a gravity-free mixer for stirring, and stir for 30 mi...

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Abstract

The invention discloses a spraying elastomer with high mechanical property. The spraying elastomer comprises a component A and a component B in a weight ratio of 1:1.6-2.3, wherein the component A comprises the following raw materials in percentage by weight: 19-26% of hydroxyl terminated polyether or amine terminated polyether, 12-23% of isophorone isocyanate, 23-27% of HDI (hexamethylene diisocyanate) biuret isocyanate, and 26-40% of solvent; the component B comprises the following raw materials in percentage by weight: 11-20% of aliphatic isocyanate, 13-22% of amine terminated polyether, 9-17% of aliphatic chain extender, 10-20% of polyaspartic acid ester, and other additives. The spraying elastomer has the advantages that the film forming efficiency of a topcoat is high, the tensile strength is high, and the elongation at break is also high; the adhering strength and aging-resistant property are also obviously improved, the color retention property is excellent under the radiation by ultraviolet light, and the spraying elastomer can be used as topcoat material for long-time use.

Description

technical field [0001] The invention relates to the field of protective coating topcoat, in particular to a spray-coating elastic body with high mechanical properties. Background technique [0002] Although there are many types of coating topcoats, in terms of their composition, they are: main film-forming substances, secondary film-forming substances and auxiliary film-forming substances. Oil and resin are the main film-forming substances, called fixatives, or adhesives, which are the basis of coating topcoats. They can form a paint film firmly attached to the surface of the material; color is a secondary film-forming substance, which can Give the coating finish a certain color and hiding power, increase the thickness of the layer, and improve the wear resistance, heat resistance, corrosion resistance and other properties of the coating finish; solvents, thinners and other auxiliary materials are auxiliary film-forming substances that help For coverage and improved perform...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/78C08G18/75C08G18/50C08G18/48C08G18/66C08G18/60C09D175/08C09D175/12
CPCC08G18/4054C08G18/4804C08G18/5021C08G18/6666C08G18/725C08G18/73C08G18/755C08G18/7831C09D175/12
Inventor 李开成
Owner 哈威光电科技(苏州)有限公司