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Zinc-based black rust inhibitor, rust inhibiting coating film, and rust inhibiting metal member

A kind of anti-rust agent, black technology, applied in the direction of metal layered products, anti-corrosion coatings, coatings, etc., can solve the problems of poor concealment rate, inability to maintain black for a long time, red change, etc., and achieve the effect of excellent anti-rust performance

Active Publication Date: 2012-03-21
NOF METAL COATINGS ASIA PACIFIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if a large amount of carbon is added such as the "black zinc powder paint composition" described in Patent Document 5, the carbon will form localized cells in the film, resulting in a problem of reduced rust resistance.
[0013] In addition, if the usual black iron oxide is added to the zinc-containing preservative, since the concealment rate of the black iron oxide to the silver color based on zinc is poor, for example, when a film having a thickness of 5 to 10 μm is formed on a bolt or the like, not only cannot obtain sufficient blackness, and discoloration, redness, etc. due to severe conditions such as high temperature at the installation site, it is impossible to maintain the ideal black color for a long time

Method used

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  • Zinc-based black rust inhibitor, rust inhibiting coating film, and rust inhibiting metal member
  • Zinc-based black rust inhibitor, rust inhibiting coating film, and rust inhibiting metal member
  • Zinc-based black rust inhibitor, rust inhibiting coating film, and rust inhibiting metal member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0086] The present invention will be described in detail through embodiments below, but the present invention is not limited to these examples.

[0087] Prepare the following metal substrate samples 1 and 2 as metal substrates:

[0088] (1) Metal substrate sample 1: SPCC, 5D steel plate, size: 70×150×0.8mm

[0089] (2) Metal substrate sample 2: Bolt (mild steel), M10×55, pitch 1.5mm, hardness 9T

Embodiment approach 1

[0091] After the metal substrate samples 1 and 2 were degreased by a solvent, the surface was ground by shot blasting to complete the pretreatment of each sample.

[0092] Mix in 34.6 parts by mass of deionized water (8.00 μS / cm or less), add 13.5 parts by mass of γ-glycidyl trimethoxysilane (manufactured by CHISSO Corporation: S510) as (4) silane coupling agent, and mix together . After mixing the above components for 3 hours, 0.8 parts by mass of orthoboric acid (manufactured by Wako Pure Chemical Industries, Ltd.), and 1.0 parts by mass of nonionic surfactant (HLB9.5) (NOF Corporation: NONION) were added to the mixture. NS-204.5), 1.0 parts by mass of nonionic surfactant (HLB13.5) (NOF Corporation: NONION NS-208.5), and an appropriate amount of other additives such as antifoaming agent Subtotal 7.9 mass parts, mix together. Now, 11.4 parts by mass of dipropylene glycol (manufactured by ASAHI GLASS CO., LTD., abbreviated as "DPG") was added to this mixture as (5) Alcohol-b...

Embodiment approach 2～9

[0097] Except for the change in the combination shown in Table 1, the rust-proof metal base material sample 1 and the five rust-proof metal base material samples 2 were manufactured in the same manner as in the first embodiment.

[0098] [Table 1]

[0099]

[0100] Comparison mode 1~35

[0101] Except for the changes in the combinations shown in Tables 2 to 4, in the same manner as in Embodiment 1, a rust-proof metal base material sample 1 and five rust-proof metal base material samples 2 were produced.

[0102] [Table 2]

[0103]

[0104] [table 3]

[0105]

[0106] [Table 4]

[0107]

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Abstract

Disclosed are: a rust inhibiting coating film which exhibits excellent rust inhibiting properties as a black rust inhibitor, while having a sufficient black color tone; a rust inhibiting metal member; and a zinc-based black rust inhibitor which is capable of forming the rust inhibiting coating film. Specifically disclosed is a zinc-based black rust inhibitor which is characterized by containing (1) a zinc pigment and / or a zinc alloy pigment, (2) black synthetic iron oxide and (3) a phosphoric acid-based rust inhibiting pigment in such amounts that the mass ratio of (1) the zinc pigment and / or zinc alloy pigment to (2) the black synthetic iron oxide ((1) / (2)) is within the range from 85 / 15 to 65 / 35 and the mass ratio of (2) the black synthetic iron oxide to (3) the phosphoric acid-based rust inhibiting pigment ((2) / (3)) is within the range from 70 / 30 to 50 / 50. Also specifically disclosed are a rust inhibiting coating film which is formed from the zinc-based black rust inhibitor, and a rust inhibiting metal member in which the rust inhibiting coating film is provided on the surface of a metal base.

Description

technical field [0001] The invention relates to a zinc-based black antirust agent, an antirust film and an antirust metal part, in particular to an antirust film and an antirust film which has excellent antirust performance as a black antirust agent and has a sufficient black tone. rusty metal parts, and a zinc-based black antirust agent that can form the antirust film. Background technique [0002] Among metal antirust paints, we know that zinc rich paint, for example, contains metal powders such as zinc pigments and aluminum powder as antirust pigments, and because the ionization tendency is greater than that of iron, it can exert a sacrificial anticorrosion effect. Zinc-rich paint is divided into those using organic solvents and those that can be diluted with water. Among zinc-rich paints using organic solvents, there are organic zinc-rich paints using organic resins such as epoxy resins as binders, and inorganic zinc-rich paints using inorganic binders such as ethyl sil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/00C09D5/10B32B15/08C09D1/00
CPCC09D1/00C09D5/106
Inventor 玉置晓冈岛真人前原英郎
Owner NOF METAL COATINGS ASIA PACIFIC
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