Single-component coating for automobile seal trip

Abstract

The present application discloses a single-component coating for automobile seal strip, which includes one or several kinds of waterborne polyurethane resin, waterborne polyacrylate resin, waterborne epoxy resin, as well as polysilicone dispersion and sealant isocyanate curing agent. The coating of the present application is sprayed on the automobile glass guide groove, automobile door frame sponge strip, automobile trunk seal strip, automobile skylight seal strip and other rubber base materials and then baked; after the reaction, it can solve the problem of abnormal sound when the automobile is in motion, and the problem of feeling soft and smooth on the coating surface.

Claims

1. A single-component coating composition for automobile seal strip, comprising the following components by weight percentage: TABLE-US-00006 Waterborne polyurethane resin  25-45%, Waterborne polyacrylic resin  20-30%, Waterborne epoxy resin  15-25%, Polysilicone dispersion   5-30%, Blocked isocyanate curing agent   5-30%, Film-forming additive   3-15%, Wetting agent  0.1-2%, Leveling agent  0.1-2%, Dispersant  0.1-3%, Defoaming agent  0.1-2%, Organic silicone  0.5-5%, Organic fluorine  0.1-5%, Color paste   1-5%, Thickener   1-3%, and Ultraviolet absorbent  0.1-1%.

2. The single-component coating composition for automobile seal strip according to claim 1, wherein the film-forming additive is dipropylene glycol butyl ether.

3. The single-component coating composition for automobile seal strip according to claim 1, wherein the organic silicone is silicone resin.

4. The single-component coating composition for automobile seal strip according to claim 1, wherein the organic fluorine is a fluorine-containing olefin.

5. The single-component coating composition for automobile seal strip according to claim 1, wherein the color paste is a black paste.

6. The single-component coating composition for automobile seal strip according to claim 1, wherein the defoaming agent is organic silicon defoaming agent or mineral oil defoaming agent.

Description

DETAILED DESCRIPTION OF EMBODIMENTS

(1) The technical solution of the disclosure is further described below in conjunction with some embodiments, but the scope of protection required by the present disclosure is not limited to these.

Embodiment 1

(2) The single-composition coating for automobile seal trip of the present embodiment, which includes the following components in percentages by weight:

(3) TABLE-US-00003 Waterborne polyurethane resin  25% Waterborne polyacrylate resin  20% Waterborne epoxy-base resin  15% Polysilicone dispersion .sup. 5% Sealant isocyanate curing agent .sup. 5% Film-forming additive .sup. 3% Wetting agent 0.1% Leveling agent 0.1% Dispersant 0.1% Deforming agent 0.1% Organic silicone 0.5% Organic fluorine 0.1% Color paste .sup. 1% Thickener .sup. 1% Ultraviolet absorbent 0.1% Water remaining.

(4) A preparation method of the single-component coating for automobile seal strip, which includes the following steps:

(5) (1) Pre-dispersing organic silicone, organic fluorine powder and water according to predetermined revolutions and amounts;

(6) (2) then putting waterborne polyurethane resin, waterborne acrylic resin, waterborne epoxy resin and polysilicone dispersion in order in a stirring kettle, stirring and dispersing thoroughly;

(7) (3) adding wetting agent, leveling agent, dispersant, defoaming agent, organic silicone, organic fluorine, color paste, thickener, and ultraviolet absorbent, stirring and dispersing; and

(8) (4) adding sealant isocyanate curing agent and remaining water, stirring and dispersing.

Embodiment 2

(9) Refer to Embodiment 1, the single-composition coating for automobile seal trip of the present embodiment, which includes the following components and weight percentages:

(10) TABLE-US-00004 Waterborne polyurethane resin  28% Waterborne polyacrylate resin  23% Waterborne epoxy-base resin  17% Polysilicone dispersion .sup. 8% Sealant isocyanate curing agent .sup. 8% Film-forming additive .sup. 5% Wetting agent 0.5% Leveling agent 0.4% Dispersant 0.4% Deforming agent 0.3% Organic silicone 0.5% Organic fluorine 0.4% Color paste .sup. 2% Thickener .sup. 2% Ultraviolet absorbent 0.3% Water remaining.

Embodiment 3

(11) Refer to Embodiment 1, the single-composition coating for automobile seal trip of the present embodiment, which comprises the following components and weight percentages:

(12) TABLE-US-00005 Waterborne polyurethane resin  30% Waterborne polyacrylate resin  22% Waterborne epoxy-base resin  15% Polysilicone dispersion .sup. 6% Sealant isocyanate curing agent .sup. 9% Film-forming additive .sup. 6% Wetting agent 0.8% Leveling agent 0.7% Dispersant 0.5% Deforming agent 0.4% Organic silicone 0.4% Organic fluorine 0.6% Color paste 0.7% Thickener .sup. 1% Ultraviolet absorbent 0.2% Water remaining.

(13) The single-composition coating for automobile seal trip obtained from any of embodiments 1-3 is sprayed on rubber base material of the automobile door frame sponge strip, after the reaction, testing the loudness of the automobile in motion, and the test results are less than 3SONE (unit of loudness), which solves the problem of abnormal sounds caused in the automobile in motion; and the coating surface feels soft and smooth.