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A kind of aluminum alloy door and window scratch repair putty and preparation method thereof

A technology of aluminum alloy doors and windows, putty, applied in the direction of filling slurry, etc., can solve the problems of difficult metal surface repair, short material activation period, poor metal surface adhesion, etc., and achieves good construction performance, good filling, and long activation period. Effect

Active Publication Date: 2017-08-29
浙江博星化工涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although epoxy putty is strong and has strong adhesion, it has heavy viscosity, is not easy to scratch, and is easy to yellow; putty is unsaturated polyester putty, which has good construction, fast drying, and easy polishing, but the reactive diluent styrene is volatile Strong, toxic, and the mixed material has a short pot life and is easy to gel; the one-component nitro putty has poor adhesion on the metal surface, and the putty layer is easy to shrink and collapse
Alkyd putty dries slowly, has poor adhesion, and is not easy to sand
Due to the low surface energy of aluminum alloy, it is difficult for ordinary paint putty to adhere to it, and the repair of its metal surface is difficult, which affects its decorative function. The development of a special putty suitable for repairing scratches on the surface of aluminum alloy doors and windows has a wide range of market applications prospect

Method used

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  • A kind of aluminum alloy door and window scratch repair putty and preparation method thereof
  • A kind of aluminum alloy door and window scratch repair putty and preparation method thereof
  • A kind of aluminum alloy door and window scratch repair putty and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A component is made up of following components among the present embodiment:

[0027]

[0028]

[0029] The above percentages are mass percentages;

[0030] Component B is hexamethylene diisocyanate (HDI)-toluene diisocyanate (TDI) mixed trimer.

[0031] A preparation method of putty for repairing scratches on aluminum alloy doors and windows, said preparation method comprising the following preparation steps:

[0032] Put the epoxy-modified oil-free alkyd resin, butyl acetate and dispersant in component A into the paint-making tank, add polyamide wax at a stirring speed of 1200rpm / min and keep stirring for 30 minutes, and then add it to the paint-making tank in turn. Put heavy calcium carbonate, talcum powder and abrasive into the cylinder, disperse at a high speed at a speed of 2500rpm / min until the fineness is less than or equal to 50μm, then put in dimethylethanolamine, and stir evenly;

[0033] The B component is a mixed trimer of hexamethylene diisocyanate...

Embodiment 2

[0036] A component is made up of following components among the present embodiment:

[0037]

[0038] The above percentages are mass percentages;

[0039] Component B is hexamethylene diisocyanate (HDI)-toluene diisocyanate (TDI) mixed trimer.

[0040] A preparation method of putty for repairing scratches on aluminum alloy doors and windows, said preparation method comprising the following preparation steps:

[0041] Put the epoxy-modified oil-free alkyd resin, butyl acetate and dispersant in component A into the paint-making tank, add polyamide wax at a stirring speed of 1200rpm / min and keep stirring for 30 minutes, and then add it to the paint-making tank in turn. Put heavy calcium carbonate,

[0042] Talc powder and grinding agent are dispersed at a high speed at a speed of 2500rpm / min until the fineness is less than or equal to 50μm, and then dimethylethanolamine is added and stirred evenly;

[0043] The B component is a mixed trimer of hexamethylene diisocyanate (HD...

Embodiment 3

[0046] A component is made up of following components among the present embodiment:

[0047]

[0048] The above percentages are mass percentages;

[0049] Component B is hexamethylene diisocyanate (HDI)-toluene diisocyanate (TDI) mixed trimer.

[0050] A preparation method of putty for repairing scratches on aluminum alloy doors and windows, said preparation method comprising the following preparation steps:

[0051] Put the epoxy-modified oil-free alkyd resin, butyl acetate and dispersant in component A into the paint-making tank, add polyamide wax at a stirring speed of 1200rpm / min and keep stirring for 30 minutes, and then add it to the paint-making tank in turn. Put heavy calcium carbonate, talcum powder and abrasive into the cylinder, disperse at a high speed at a speed of 2500rpm / min until the fineness is less than or equal to 50μm, then put in dimethylethanolamine, and stir evenly;

[0052] The B component is a mixed trimer of hexamethylene diisocyanate (HDI)-tolue...

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Abstract

The invention discloses an aluminum alloy door / window scratch repair putty and a preparation method thereof. The putty comprises a component A and a component B, wherein the component A is composed of an epoxy modified oil-free alkyd resin, butyl acetate, a dispersing agent, polyamide wax, ground calcium carbonate, talcum powder, a sanding agent and dimethylethanolamine; the component B is a hexamethylene diisocyanate (HDI)-toluene diisocyanate (TDI) mixed tripolymer; and the mass ratio of the component A to the component B is 10:1. The aluminum alloy door / window scratch repair putty uses the epoxy modified oil-free polyester as the base material, and thus, has high adhesive force for the aluminum alloy substrate. The aluminum alloy door / window scratch repair putty has the advantages of favorable drying property and favorable filling property, and is easy for sanding and scraping. The HDI-TDI mixed tripolymer is used as the crosslinking agent, thereby compromising the drying property, flexibility, sanding property and yellowing resistance of the putty layer. The mixture has the characteristics of long activation period and favorable workability.

Description

technical background [0001] During the decoration process of exterior walls, roofs, balconies and other parts of modern buildings, some aluminum alloy doors and windows are inevitably scratched and bumped, which will cause scratches on the metal surface and affect the appearance. For the repair of scratches on metal surfaces such as aluminum alloys and iron, two-component putty (epoxy putty, putty), one-component (nitro putty), and alkyd putty are generally used. Although epoxy putty is strong and has strong adhesion, it has heavy viscosity, is not easy to scratch, and is easy to yellow; putty is unsaturated polyester putty, which has good construction, fast drying, and easy polishing, but the reactive diluent styrene is volatile Strong, toxic, and the mixed material has a short pot life and is easy to gel; the one-component nitro putty has poor adhesion on the metal surface, and the putty layer is easy to shrink and collapse. Alkyd putty dries slowly, has poor adhesion, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/34
Inventor 王君瑞
Owner 浙江博星化工涂料有限公司
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