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Two-component weather-resistant hydrophobic and oleophobic finish paint

A two-component, weather-resistant technology used in coatings to achieve good compatibility, good weather resistance and UV yellowing resistance, and good hydrophobicity and oleophobicity.

Active Publication Date: 2021-10-19
上海库曜新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a two-component weather-resistant, hydrophobic and oleophobic finish against the oil-resistant limitations of existing zinc-aluminum coatings.

Method used

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  • Two-component weather-resistant hydrophobic and oleophobic finish paint
  • Two-component weather-resistant hydrophobic and oleophobic finish paint
  • Two-component weather-resistant hydrophobic and oleophobic finish paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050]This embodiment relates to a two-component weather-resistant and hydrophobic and oleophobic finish paint, and the composition and mass dosage of the composition are as follows in Table 1:

[0051] Table 1

[0052]

[0053]

[0054] Remark: 1 Hexion hydrogenated epoxy resin, epoxy equivalent 210g / mol

[0055] 2 Purchased from Honeywell, the average particle size D50 is 3um

[0056] 3 Merck Chemicals

[0057] 4 Evonik Hydrophobically Modified Fumed Silica

[0058] 5，6 Purchased from Sinopec Shell

[0059] 7 It is the curing agent a of perfluorodecanoic acid modified tetraethylenepentamine, and its synthetic raw material: the molar mass ratio of perfluorodecanoic acid to tetraethylenepentamine is 3:2. The amine equivalent of curing agent a is 170g / mol, and the structure is as follows:

[0060] NMR carbon spectrum such as figure 1 .

[0061] 8 It is the curing agent b of perfluorodecanoic acid modified diethylenetriamine, and its synthetic raw material:...

Embodiment 2

[0076] This embodiment relates to a two-component weather-resistant and hydrophobic and oleophobic topcoat, and the composition and mass dosage of the composition are as follows in Table 6:

[0077] Table 6

[0078] raw material A component 1 (wt%) A component 2 (wt%) A component 3 (wt%) A component 4 (wt%) EPONEX Resin 1510 50 50 50 50 PTFE 0 5 0 5 Krytox VPF1531 1

0 0 5 5 Xylene 5

40 36 36 32 Isobutanol 6

10 9 9 8 total 100 100 100 100

[0079] 1 The Chemours Chemical Perfluoropolyether

[0080] The performance test results are shown in Table 7:

[0081] Table 7

[0082]

[0083]

[0084] Components A in topcoats 3, 4, 5, and 6 correspond to components A 1, 2, 3, and 4 in Table 6 in turn.

[0085] In summary, the two-component weather-resistant, hydrophobic and oleophobic topcoat of the present invention has a good compatibility with the zinc-aluminum coating primer. After curi...

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PUM

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Abstract

The invention discloses a two-component weather-resistant hydrophobic and oleophobic finish paint. The finish paint composition is composed of a component A and a component B, wherein based on the total mass percentage of the component A, the component A comprises 1-100% of a weather-resistant epoxy resin, 0-10% of polytetrafluoroethylene, 0-10% of a hydrophobic auxiliary agent, 0-10% of other auxiliary agents and the balance of an organic solvent A, based on the total mass percentage of the component B, the component B comprises the following components in percentage by mass: 1-100% of a curing agent and the balance of an organic solvent B, and the mass ratio of the component A to the component B is (1: 99)-(99: 1). After the component A and the component B are mixed, the mixture is sprayed, dip-coated or brushed on paint or a metal substrate, and a film can be formed through natural drying or thermocuring. The finish paint prepared by the invention has excellent weather resistance and hydrophobic and oleophobic capabilities; and the finish paint is matched with a zinc-aluminum coating primer for use, so that the anti-corrosion capability of the composite coating can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a two-component weather-resistant, hydrophobic and oleophobic topcoat; in particular, to a topcoat composition with excellent weather resistance and hydrophobic and oleophobic properties after the coating is cured and the prepared surface paint. Background technique [0002] At present, zinc-aluminum coatings on the market are commonly used as anti-corrosion coatings for parts such as automobile fuel tanks and oil pipes, and have excellent anti-corrosion properties. However, due to the poor oil resistance of the zinc-aluminum coating, it is necessary to coat the zinc-aluminum coating with an oil-proof topcoat. [0003] After searching the existing patent documents, it was found that CN 104177986 A discloses a zinc-aluminum composite coating, which includes two components, A and B. Component A of A includes polyarylether sulfone ketone modified resin, silicon carbide micropowder,...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D127/18C08G59/50
CPCC09D163/00C08G59/504C08L27/18
Inventor 姚下银
Owner 上海库曜新材料有限公司