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Water surface treatment agent for precoating metal material, furface treated metal material and precoating metallic material

A technology of surface treatment agent and metal material, which is applied in the direction of metal material coating process, device for coating liquid on the surface, anti-corrosion coating, etc., can solve the problem that the processing adhesion cannot be realized, the surface treatment agent is not practical, and cannot be realized The bending test is qualified, the processing adhesion and other problems are achieved, and the effects of good storage stability, cold bending adhesion and deep drawing performance, coin scratch resistance and moisture resistance are achieved.

Active Publication Date: 2009-10-21
NIHON PARKERIZING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The adhesion achieved by the treatment liquid for provision of temporary rust resistance is the processing adhesion of the Ericksen extrusion level, and the processing adhesion of the bending test passing level cannot be achieved.
Similarly, when the anti-fingerprint surface treatment liquid and the surface treatment liquid for lubrication are transferred to the base treatment of pre-coated steel sheets, the processing adhesion of the acceptable level of the bending test cannot be achieved.
Therefore, surface treatment agents that have both sufficient coating adhesion and sufficient corrosion resistance required for pre-coated steel sheets have not yet been put into practical use, and early development is expected

Method used

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  • Water surface treatment agent for precoating metal material, furface treated metal material and precoating metallic material
  • Water surface treatment agent for precoating metal material, furface treated metal material and precoating metallic material
  • Water surface treatment agent for precoating metal material, furface treated metal material and precoating metallic material

Examples

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Embodiment

[0130] The following examples and comparative examples of the present invention are given to describe the present invention in detail, but the present invention is not limited to these examples.

[0131] 1. Preparation of water-based surface treatment agent

[0132] The silane coupling agent, polyurethane resin and polycarbodiimide compound described in Table 1 to Table 5, and the hexafluorometallic acid when used, other compounds that release fluoride ions when used, and the metal compound when used are according to the Sequentially add deionized water to reach the mass ratio of solid components shown in Table 1 to Table 5, and then stir for 5 minutes to fully disperse. Then, deionized water was added to adjust the solid content concentration to 7% by mass.

[0133] The components used are as follows.

[0134] Silane coupling agent (A) or equivalent

[0135] A1: γ-Aminopropyltrimethoxysilane

[0136] A2: 2-aminoethyl-3-aminopropyltrimethoxysilane

[0137] A3: γ-Glycidoxy...

manufacture example 1

[0180]Make 700 parts by mass (2.87mol) of m-tetramethylxylylene diisocyanate in 14 parts by mass of 3-methyl-1-phenyl-2-phosphene-1-oxide (carbodiimidization catalyst) The reaction was carried out at 180° C. for 32 hours in the presence of , to obtain a polycarbodiimide compound with isocyanate groups at both ends and a degree of condensation of 12. Add 115 parts by mass of polyoxyethylene monomethyl ether with a degree of polymerization of 12 to 224 parts by mass of the obtained polycarbodiimide compound, and react at 100°C for 48 hours to block the isocyanate groups at both ends, Then, 509 parts by mass of distilled water was slowly added at 50° C. to obtain an aqueous polycarbodiimide compound solution.

manufacture example 2

[0182] Make 338 mass parts (1.35mol) of diphenylmethane diisocyanate and 354 mass parts (1.35mol) of 4,4'-dicyclohexylmethane diisocyanate in 3-methyl-1-phenyl-2-cyclophosphene- The reaction was carried out at 180° C. for 32 hours in the presence of 2.9 parts by mass of 1-oxide to obtain a polycarbodiimide compound having isocyanate groups at both terminals and a degree of condensation of 12. Add 115 parts by mass of polyoxyethylene monomethyl ether with a degree of polymerization of 12 to 224 parts by mass of the obtained polycarbodiimide compound, and react at 100°C for 48 hours to block the isocyanate groups at both ends, and then 509 parts by mass of distilled water were slowly added at 50° C. to obtain an aqueous solution of a polycarbodiimide compound.

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Abstract

The invention provides an aqueous surface processing agent for a precoating metallic material, a furface treated metal material and a precoating metallic material. A non-chromium aqueous surface processing agent can be used for forming a film with good corrosion resistance(the corrosion resistance of the film cut part and end plane), one-time coating adaptation(at the normal temperature and in thecold condition), second coating adaptation, effective coin scrapeing resistance, deep drawing quality, alkali stability, acid-resistance and wet fastness, as well as storage stability. The aqueous surface processing agent is used as the substrate treating agent of the precoating metallic material, and comprises, at the specific ratio, silicone hydride coupling agent with primary amino radical (A), cationoid polyurethane resin with the specific structure and the class transition temperature of 0 to 100 DEG C (B), specific non-ionic or cationoid polycarbodiimide compounds (C), and further hexaflurate(D), metallic compound (E) and silicone hydride coupling agent with the functional group capable of reacting with the primary amino radical.

Description

technical field [0001] The present invention relates to a chromium-free water-based surface treatment agent with good storage stability, a metal material having a film formed by using the treatment agent, and a chromium-free pre-coated metal material, wherein the chromium-free water-based surface treatment agent , It is useful as a base treatment agent for the manufacture of precoated metal materials with excellent coating adhesion (adhesion to packaging), corrosion resistance, and coin scratch resistance, and good cold bending adhesion and deep drawing of. Background technique [0002] Existing post-painted products that are painted after processing for components such as home appliances, building materials, and automobiles are often pretreated with phosphate, etc. However, in recent years, especially for home appliances, coating coloring Pre-coated steel panels with organic coatings are used instead of such pretreatments. Since the precoated steel sheet is covered with a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/05C23C22/78B05D7/14
CPCC23C2222/20B05D2202/10B05D2350/00C09D5/082C23C22/34C09D5/08C09D7/40
Inventor 猪古智洋野村信治山本茂树
Owner NIHON PARKERIZING
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