Hydrophilic primer surfacer and preparation method thereof

A hydrophilic and painting technology, applied in the direction of coating, etc., can solve the problems of unstable spraying effect, complicated wettability technology, high cost investment, etc., to improve matching, solve the problem of leaving marks and sagging, and improve The effect of sagging

Inactive Publication Date: 2016-06-29
LANGFANG NIPPON PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, one of the aforementioned methods to change the wettability technology of the water-based topcoat is very complicated and difficult; the second method has high cost input; the third method is relatively simple, although the water-based topcoat in the current technology supports the defects of the oily mid-coat Larger, the main reason is that the spraying effect is unstable, and shrinkage cavities and sags often occur, but it is still the breakthrough direction for future technical improvement
[0004] In view of this, it is necessary to provide a hydrophilic oil-based primer and a preparation method thereof, so as to solve the sagging phenomenon caused by the incompatibility of water and oil, thereby overcoming some problems that occur when the oil-based primer is matched with a water-based topcoat. defect

Method used

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  • Hydrophilic primer surfacer and preparation method thereof
  • Hydrophilic primer surfacer and preparation method thereof
  • Hydrophilic primer surfacer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0067] The preparation method of the hydrophilic intermediate paint of embodiment 3 may further comprise the steps:

[0068] Step 1: Soak 70 parts of titanium dioxide pigment with 10 parts of xylene solvent, 4.5 parts of ethylene glycol butyl ether acetate, and 15 parts of EEP for 2 hours, then add 3 parts of acrylic resin PRS-1015 and 0.1 part of pigment to disperse under stirring Agent KS-873 continues to stir for 20 minutes before sanding, the fineness is less than 5um;

[0069] Step 2: filtering the material obtained in step 1 after sand grinding;

[0070] Step 3: After filtering, add 3 parts of amino resin 20SE under stirring;

[0071] Step 4: Continue to add 0.16 parts of wetting and dispersing agent BYK161, 0.15 parts of wetting and dispersing agent BYK182, and 0.3 parts of benzoin GK19 under stirring state, then sand mill, the fineness is less than 5um, and finally add 0.1 part of hydrophilic additive BYK3560;

[0072] Step 5: Add 0.15 parts of DBE (dibasic acid este...

Embodiment 4

[0075] The preparation method of the hydrophilic intermediate paint of embodiment 4 may further comprise the steps:

[0076] Step 1: soak 67 parts of titanium dioxide pigment with 11 parts of xylene solvent, 6 parts of ethylene glycol butyl ether acetate, and 16 parts of EEP for 2 hours, then add 4 parts of acrylic resin and 0.3 parts of pigment dispersant to continue stirring Sanding after 20 minutes, the fineness is less than 5um;

[0077] Step 2: filtering the material obtained in step 1 after sand grinding;

[0078] Step 3: After filtering, add 2 parts of amino resin under stirring state;

[0079] Step 4: Continue to add 0.16 parts of wetting and dispersing agent BYK161, 0.2 parts of wetting and dispersing agent BYK182, and 0.3 parts of benzoin GK19 under stirring state, then sand mill, the fineness is less than 5um, and finally add 0.2 parts of hydrophilic additive BYK3560;

[0080] Step 5: adding 0.2 parts of DBE (dibasic acid ester), 0.2 parts of S-100 solvent, and 0....

Embodiment 5

[0083] The preparation method of the hydrophilic intermediate paint in Example 5 is the same as that in Example 4, and will not be repeated here.

[0084] The performance parameters of the hydrophilic intermediate coatings prepared in Examples 1 to 5 are shown in Table 3 below:

[0085] Table 3: Comparison table of performance parameters of hydrophilic medium paint

[0086] performance parameters

Example 1

Example 2

Example 3

Example 4

Example 5

Surface tension (dry film)

65

67

69

73

75

Water flow length (CM)

0

0

2

5

6

[0087] The solvent used in the present invention provides the solubility of raw materials for the hydrophilic medium paint of the present invention; benzoin is an anti-pinhole auxiliary agent, which can effectively prevent shrinkage; Flexibility; amino resin provides the crosslinking density of the hydrophilic medium paint of the present invention; the remaining components ...

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Abstract

The invention provides a hydrophilic intermediate paint, which is characterized by comprising the following components in parts by weight: 3-4 parts of acrylic resin; 2-3 parts of amino resin; 60-70 parts of pigment; 0.5-1.26 parts of auxiliary agent parts; solvent 27.3 to 33.6 parts. The present invention also provides a preparation method of the hydrophilic mid-coat paint. The hydrophilic mid-coat paint preparation method and the mid-coat paint product of the present invention use acrylic resin and amino resin as reaction main bodies, and are equipped with pigments and fillers. The hydrophilic auxiliary agent can effectively solve the sag phenomenon caused by the incompatibility of water and oil, thereby solving the defects that occur when the oily mid-paint is matched with the water-based topcoat; the preparation method of the invention has a simple process and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of paint preparation, and in particular relates to a hydrophilic intermediate paint applicable to automobile topcoats and a preparation method thereof. Background technique [0002] At present, automobile topcoats are usually composed of composite coatings. The spraying techniques and coatings commonly used by automobile manufacturers in spraying car paints on the body mainly include the following types: one is water-based intermediate paint supporting water-based topcoat, and the other is water-based intermediate paint. Water-based topcoat (3C1B) without preheating, and water-based topcoat for oil-based intermediate paint. Generally, when water-based intermediate paint is matched with water-based topcoat and oil-based intermediate paint is matched with oil-based topcoat for spraying, its compatibility is better; however, when oil-based intermediate paint is matched with water-based topcoat, its compatibilit...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D161/20C09D7/12C09D7/00
CPCC09D133/00C09D7/20C09D7/61C09D7/65C09D161/20
Inventor 叶东明
Owner LANGFANG NIPPON PAINT
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