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Middle coating paint for polypropylene plastic and preparation method thereof

A technology of polypropylene plastic and chlorinated polypropylene, applied in the direction of coating, etc., can solve the problems of automobile damage, inability to withstand the damage of ethanol gasoline, etc., and achieve the effects of low cost, improved storage stability and simple preparation process

Inactive Publication Date: 2013-10-09
TIANCHANG JULONG TRAVEL PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional intermediate paint currently used on the car body can only withstand ordinary unleaded gasoline, and cannot withstand the damage of ethanol gasoline, which will cause serious damage to the car.

Method used

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  • Middle coating paint for polypropylene plastic and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of raw material (by weight percentage) of intermediate coating coating for polypropylene plastics is as follows:

[0041] Chlorinated polypropylene modified acrylic resin: 35%,

[0042] Modified chlorinated polypropylene: 20%,

[0043] Diphenolic propane type epoxy resin: 1%,

[0044] Titanium dioxide: 15%,

[0045] Talc powder: 2%,

[0046] Fumed silica: 1%,

[0047] Styrene-maleic anhydride copolymer: 0.1%,

[0048] Xylene fill up to 100%.

[0049] Preparation method: weigh according to the above ratio, mix chlorinated polypropylene modified acrylic resin, titanium dioxide, talcum powder, fumed silica, styrene-maleic anhydride copolymer, and xylene; then mix the materials together Put it into a sand mill for uniform dispersion; then add modified chlorinated polypropylene and diphenolic propane epoxy resin to it and mix evenly to make a coating.

Embodiment 2

[0051] A kind of raw material (by weight percentage) of intermediate coating coating for polypropylene plastics is as follows:

[0052] Chlorinated polypropylene modified acrylic resin: 20%,

[0053] Modified chlorinated polypropylene: 35%,

[0054] Diphenolic propane type epoxy resin: 2%,

[0055] Iron yellow: 10%,

[0056] Talc powder: 2%,

[0057] Barium sulfate: 3%,

[0058] Polyethylene wax: 0.5%,

[0059] Styrene-maleic anhydride copolymer: 0.2%,

[0060] Cyclohexanone: 15%,

[0061] Propylene glycol makes up to 100%.

[0062] Preparation method: weigh according to the above ratio, mix chlorinated polypropylene modified acrylic resin, iron yellow, talcum powder, barium sulfate, polyethylene wax, styrene-maleic anhydride copolymer, cyclohexanone, and propylene glycol ; Then put the materials together into a sand mill for uniform dispersion; then add modified chlorinated polypropylene and diphenolic propane epoxy resin to it and mix evenly to make a coating.

Embodiment 3

[0064] A kind of raw material (by weight percentage) of intermediate coating coating for polypropylene plastics is as follows:

[0065] Chlorinated polypropylene modified acrylic resin: 30%,

[0066] Modified chlorinated polypropylene: 30%,

[0067] Novolak epoxy resin: 1.5%,

[0068] Kaolin: 10%,

[0069] Polyamide wax: 1%,

[0070] Styrene-maleic anhydride copolymer: 0.1%,

[0071] Methyl isoamyl ketone: 10%,

[0072] Fill toluene to 100%;

[0073] Preparation method: weigh according to the above ratio, mix chlorinated polypropylene modified acrylic resin, kaolin, polyamide wax, styrene-maleic anhydride copolymer, methyl isoamyl ketone, and toluene; then mix Put the materials together into the sand mill for uniform dispersion; then add modified chlorinated polypropylene and phenolic polyepoxy resin to it and mix evenly to make the coating.

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Abstract

The invention provides a middle coating paint for a polypropylene plastic, which consists of chlorinated polypropylene modified acrylic resin, modified chlorinated polypropylene, a curing agent, pigment, filler, a dispersing agent, an auxiliary and the like. The invention also provides a preparation method of the middle coating paint, which comprises the following steps of: mixing the chlorinated polypropylene modified acrylic resin with the auxiliary, putting the mixture into a sand mill and uniformly dispersing; and adding the modified chlorinated polypropylene and the curing agent, and uniformly mixing to obtain the paint. The middle coating paint provided by the invention has the advantages of low cost, simple preparation technology, wide application and great market potential; when in use, the paint can be coated through special treatment on substrates, the coated paint does not need roasting and can be naturally dried, the construction is convenient, and the energy is saved; and the obtained composite paint film is resistant to ethanol gasoline for 8 hours.

Description

technical field [0001] The invention relates to the technical field of coating chemical industry, in particular to an intermediate coating used for polypropylene (PP) plastics and a preparation method thereof. Background technique [0002] At present, the decorative, anti-corrosion, impact resistance and weather resistance requirements of automotive surface coatings are getting higher and higher, so people pay attention to the importance of intermediate coating between cathodic electrophoretic primer and topcoat. Because if the decorative topcoat is directly sprayed on the surface of the primer, due to the poor adhesion between the primer and the topcoat, it is very easy to cause the coating layer on the surface of the car to have weak resistance and be easily damaged by sand and stones on the roadside. Or other items scratch damage. In the composite coating, the intermediate coating is used as a transitional layer connecting the preceding and the following, which contribut...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D151/06C09D7/12
Inventor 孙巨福戴宇钧汪鹏程祝盆鑫
Owner TIANCHANG JULONG TRAVEL PAINT
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