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Automotive PVC stone chip resistant paint and preparation method thereof

A technology for anti-stone impact and automobile, applied in the direction of coating, etc., can solve the problems of poor dispersion of inorganic foaming agent, easy penetration and retention of moisture, and reduced corrosion resistance, so as to achieve increased adhesion, uniform bubble size, and high resistance to corrosion. Corrosion reduction effect

Inactive Publication Date: 2019-05-14
NANOSPHERE SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The void and uneven structure have an impact on the mechanical properties, such as poor wear resistance and reduced corrosion resistance, and moisture is easy to penetrate and stay
Moreover, the dispersion of inorganic blowing agents in polymers is poor, and the application is limited.

Method used

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  • Automotive PVC stone chip resistant paint and preparation method thereof
  • Automotive PVC stone chip resistant paint and preparation method thereof
  • Automotive PVC stone chip resistant paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This example provides an automotive PVC anti-stone chip coating and its preparation method and application. The components are shown in Table 1.

[0040] (1) Mix and stir 1% diluent D80 and 35% plasticizer dibutyl phthalate until the solution is transparent and uniform;

[0041] (2) Add 10% polyvinyl chloride paste resin to (1) and stir to disperse;

[0042] (3) Add 0.5% stabilizer barium stearate, 1% tackifier isocyanate, 0.1% thixotropic agent precipitated silica, 30% filler ground calcium carbonate, 0.01% pigment carbon black to (2) and stir evenly ;

[0043] (4) Slowly add 1% unexpanded microspheres, 1% silane coupling agent vinyltriethoxysilane to (3), fully stir and mix, and vacuumize and stir to remove the air bubbles in the product to obtain the obtained The car PVC anti-stone impact coating.

[0044](5) Take a certain amount of PVC anti-stone chip coating in the mold, and slowly scrape it from one side to the other side with a scraper to ensure that the coat...

Embodiment 2

[0047] This example provides an automotive PVC anti-stone chip coating and its preparation method and application. The components are shown in Table 1.

[0048] (1) Mix and stir 3% diluent D80 and 40% dioctyl phthalate until the solution is transparent and uniform;

[0049] (2) Add 20% polyvinyl chloride paste resin to (1) and stir to disperse;

[0050] (3) Add 1% stabilizer zinc stearate, 2% tackifier amine cured epoxy resin, 1% thixotropic agent organic bentonite, 35% filler calcium oxide, 0.1% pigment carbon black, 0.05 %titanium dioxide is stirred evenly;

[0051] (4) Slowly add 5% unexpanded microspheres and 3% silane coupling agent vinyl tris(β-methoxyethoxy)silane to (3), stir well, and vacuumize to remove the product The air bubbles in the car PVC anti-stone chip coating are obtained.

[0052] (5) Take a certain amount of PVC anti-stone chip coating in the mold, and slowly scrape it from one side to the other side with a scraper to ensure that the coating film is sm...

Embodiment 3

[0055] This example provides an automotive PVC anti-stone chip coating and its preparation method and application. The components are shown in Table 1.

[0056] (1) Mix and stir 3% diluent D50 and 40% dioctyl phthalate until the solution is transparent and uniform;

[0057] (2) Add 10% polyvinyl chloride paste resin to (1) and stir to disperse;

[0058] (3) Add 1% stabilizer zinc stearate, 2% tackifier polyamide, 1% thixotropic agent fumed silica, 35% filler light calcium carbonate, 0.2% pigment carbon black to (2) and stir Uniform;

[0059] (4) Slowly add 0.1% expanded microspheres and 3% silane coupling agent vinyltrimethoxysilane to (3), fully stir and mix, and vacuumize and stir to remove air bubbles in the product to obtain the described Automotive PVC anti-stone impact coatings.

[0060] (5) Take a certain amount of PVC anti-stone chip coating in the mold, and slowly scrape it from one side to the other side with a scraper to ensure that the coating film is smooth and...

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Abstract

The invention discloses automotive PVC stone chip resistant paint and a preparation method and application thereof. The automotive PVC stone chip resistant paint comprises, by weight, 10-20% of polyvinyl chloride paste resin and 0.1-5% of thermal expansion microspheres. Weight of the stone chip resistant paint can be reduced by 50% and reaches about 5kg, so that automobile lightweight is realized.Bubbles formed by the expansion microspheres are of closed structures, hole channeling is avoided, and the bubbles are uniform in size and regular in distribution and have no impact on mechanical performance of a paint film like bad consequences such as low wear resistance, corrosion resistance reduction and proneness of moisture to going deeply and being retained. Compact structure of the expansion microspheres enables the expansion microspheres to be integrated with a high-resistance matrix to generate good protective effect, and other performances of the paint film can be improved.

Description

technical field [0001] The invention relates to an automobile paint and a preparation method thereof. Background technique [0002] The bottom of the car is usually impacted by dust, gravel, stones and other abrasive materials or corroded by water, moisture, ice, salt, acid rain, etc. due to exposure. Protective effect, and then affect the performance of the car. In order to avoid the occurrence of the above situation, gas field manufacturers usually use underbody paint to protect the car body, so as to slow down the strong impact of external conditions on the bottom of the car and improve the corrosion resistance of the bottom plate. The spraying thickness reaches 400-1000μm, such a thick protective layer can also achieve the effect of sealing different metal parts. [0003] For mid-to-high-end cars, the bottom anti-stone impact coating should reach nearly ten kilograms. In consideration of cost performance, automakers expect the car to be lightweight without affecting it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D127/06C09D7/63C09D7/65
Inventor 王静文章超李玲玲高英刘峰
Owner NANOSPHERE SHANGHAI
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