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Anti-indentation amino baking paint and preparation method thereof

An amino baking varnish and anti-indentation technology, which is applied in coatings, polyester coatings, etc., can solve problems such as inability to assemble vehicles, indentations on the contact surface of the wheel hub, and affect the appearance, and achieve the effect of improving the product qualification rate

Active Publication Date: 2016-04-20
LANGFANG NIPPON PAINT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating of automobile wheels generally includes primer, base paint and varnish. These coatings need to be baked at least 140°C to cure and form a film. In order to improve production efficiency, manufacturers usually pile up and store the wheels after they are off-line to save space. Due to the influence of weight and temperature, the contact surface of the stacked wheels will have indentations, which will affect the appearance. In serious cases, they cannot be assembled into vehicles.

Method used

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  • Anti-indentation amino baking paint and preparation method thereof
  • Anti-indentation amino baking paint and preparation method thereof
  • Anti-indentation amino baking paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Table 2: Example 1 components and their content (parts by weight)

[0046]

[0047]

[0048] Step 1: Add 4 parts of solvent S-100# into the stirring tank, slowly add 4 parts of anti-sagging agent PZS1016 and 18.5 parts of amino resin US-138BB-70 in turn under stirring, and stir at 150r / min for 8min ;

[0049] Step 2: Then slowly add 4 parts of propylene glycol methyl ether acetate, 2 parts of n-butanol, 42.3 parts of polyester modified thermosetting acrylic resin SWK337, 2 parts of blocked isocyanate resin BL3175, and 0.2 parts of leveling agent BYK -315, 0.2 parts of UV absorber TINUVIN-400, 0.1 part of light stabilizer TINUVIN-292 and 1.5 parts of adhesion promoter AA9999, after feeding, increase the stirring speed to 350r / min and continue stirring for 30min before filtering and discharging The described anti-indentation amino baking varnish applied to the finish coating of automobile hubs is obtained.

[0050] Dilute the viscosity of the anti-indentation amin...

Embodiment 2

[0062] Components and content of embodiment 2 are shown in Table 5,

[0063] Table 5: Embodiment 2 components and their contents (parts by weight)

[0064]

[0065] Step 1: Add 6 parts of solvent S-100# into the stirring tank, slowly add 4.8 parts of anti-sagging agent PZS1016 and 18.5 parts of amino resin US-138BB-70 at a stirring speed of 250r / min, and stir for 15 minutes ;

[0066] Step 2: Slowly add 9 parts of propylene glycol methyl ether acetate, 5 parts of n-butanol, 55 parts of polyester modified thermosetting acrylic resin HR7054, 3 parts of blocked isocyanate resin, and 0.3 parts of leveling agent BYK- 315, 0.3 parts of ultraviolet absorber TINUVIN-400, 0.2 parts of light stabilizer TINUVIN-292 and 1.9 parts of adhesion promoter AA9999, after the feeding is completed, the stirring speed is raised to 550r / min and continued to stir for 40min, then filtered and discharged to obtain The anti-indentation amino baking varnish applied to the finish coating of automobil...

Embodiment 3

[0068] The components and content of embodiment 3 are shown in Table 6,

[0069] Table 6: Embodiment 3 components and their contents (parts by weight)

[0070]

[0071] Step 1: Add 5 parts of solvent S-100# into the stirring tank, slowly add 4.8 parts of anti-sagging agent PZS1016 and 21.6 parts of amino resin BR20SE at a stirring speed of 200r / min, and stir for 10 minutes;

[0072] Step 2: Slowly add 9 parts of propylene glycol methyl ether acetate, 2 parts of n-butanol, 42.3 parts of polyester modified thermosetting acrylic resin SWK337, 2.2 parts of blocked isocyanate resin, and 0.3 parts of leveling agent BYK- 315, 0.25 parts of ultraviolet absorber TINUVIN-400, 0.15 parts of light stabilizer TINUVIN-292 and 1.9 parts of adhesion promoter AA9999, after the feeding is completed, the stirring speed is raised to 450r / min and continued to stir for 35 minutes, then filtered and discharged to obtain The anti-indentation amino baking varnish applied to the finish coating of a...

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Abstract

The invention discloses anti-indentation amino baking paint which can be applied to automobile hub glazing coating and a preparation method of the anti-indentation amino baking paint. The anti-indentation amino baking paint is mainly prepared from, by weight, 42-55 parts of polyester-modified thermosetting acrylic resin, 2-3 parts of end-sealed isocyanate resin, 18-22 parts of amino resin, 6-8 parts of an auxiliary and 10.0-20.0 parts of solvent. The anti-indentation amino baking paint is mainly applied to automobile hub glazing coating, the polyester-modified thermosetting acrylic resin and the amino resin are taken as reaction main bodies to react with each other to generate the amino baking paint of which the pencil hardness can reach 2H, therefore, the hub surface indentation problem caused by stacking and extruding after automobile hub coating is offline can be effectively solved, and the product qualification ratio of an automobile hub manufacturing enterprise is increased. The anti-indentation amino baking paint is simple in preparation technology and suitable for industrialized production.

Description

technical field [0001] The invention relates to the technical field of coatings and preparation methods thereof. More specifically, it relates to an anti-indentation amino baking varnish that can be applied to the varnish coating of automobile hubs and a preparation method thereof. Background technique [0002] Amino baking varnish uses acrylic resin or alkyd resin and amino resin as the main film-forming substances. It is packaged in a single component at room temperature. At a higher temperature (about 140°C), chemical reactions occur between components to form a three-dimensional network Body structure, with high hardness, excellent adhesion, high gloss, good gloss and color retention and other properties, it is widely used in the coating of automobiles, ships and metal doors and windows. [0003] With the development of the automobile manufacturing industry, the demand for automobile wheels has been increasing year after year. Wheel manufacturers expect to shorten the p...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D167/00C09D161/32
CPCC08L2205/035C09D133/00C08L67/00C08L61/32
Inventor 齐见凯马永强张浩
Owner LANGFANG NIPPON PAINT
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