Steel/cast iron metal protective agent and preparation method thereof

A metal protective agent, cast iron technology, applied in the direction of metal material coating technology and other directions, can solve the problems of undiscovered patent documents and other problems, and achieve the effects of easy acquisition, long rust prevention time, and dense film formation

Active Publication Date: 2014-05-28
华阳新兴科技(天津)集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Through searching, no published patent documents related to the application of the present invention have been found

Method used

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  • Steel/cast iron metal protective agent and preparation method thereof
  • Steel/cast iron metal protective agent and preparation method thereof
  • Steel/cast iron metal protective agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A steel / cast iron metal protective agent, its composition and weight are as follows: (take 1000g product as an example)

[0022]

[0023] A preparation method of steel / cast iron metal protective agent, the steps are as follows:

[0024] ⑴Pump phytic acid, polyol phosphate PAPE, hydroxyethylidene diphosphonic acid HEDP, and polyacrylic acid into the reactor according to the ratio and stir evenly;

[0025] ⑵ Mix aluminum orthophosphate, zinc hydrate and zinc 5-nitroisophthalate in turn according to the ratio, and stir for 60-120 minutes until the materials are completely dissolved, which is the steel / cast iron metal protective agent.

[0026] Quality Standard:

[0027] Appearance: translucent liquid (there is a small amount of sediment on the long-term substrate);

[0028] Specific gravity: 1.14g / ml;

[0029] pH (4%): 3-4

[0030] Copper sulfate spot etching time (4% solution, soak for 10 seconds) ≥ 90s

[0031] Mechanism of action of the present invention:

[0...

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PUM

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Abstract

The invention relates to a steel / cast iron metal protective agent and a preparation method thereof. The steel / cast iron metal protective agent is prepared from the following components in percentage by weight: 6-20% of phytic acid, 10-35% of organophosphorus corrosion and scale inhibitor, 0.5-2% of high molecular polymer, 2.5-6% of aluminum zinc orthophosphate hydrate, 0.1-0.5% of zinc 5-nitro-isophthalate and the balance of water. The preparation method comprises the following steps: adding water into a reaction kettle, adding phytic acid, organophosphorus corrosion and scale inhibitor and high molecular polymer, evenly stirring, adding aluminum zinc orthophosphate hydrate and zinc 5-nitro-isophthalate while stirring, and stirring for 60-120 minutes until the materials are completely dissolved, thereby obtaining the steel / cast iron metal protective agent. The steel / cast iron metal protective agent provided by the invention has the advantages of environmental protection, and no sodium nitrate or heavy metals (chromium, nickel and the like); the antirust film has the advantages of strong adhesive force, better antirust effect, long antirust time, salt-fog resistance and moisture resistance; and thus, the steel / cast iron metal protective agent can be used instead of antirust oil to implement long-term rust protection without an oil film.

Description

technical field [0001] The invention belongs to the field of metal protection, and relates to a metal protection agent, in particular to a steel / cast iron metal protection agent and a preparation method thereof. Background technique [0002] With the in-depth implementation of a number of international directives such as ROHS and national environmental protection policies, the field of metal protection is facing severe challenges. Chromium-free, nickel-free, and nitrite-free environmentally friendly metal protective agents are the direction of steel protection. Water-based metal corrosion inhibitor is a kind of anti-rust functional agent that has been widely used for many years. Its principle is: use the corrosion inhibitor to absorb iron ions on the surface of new steel / cast iron, cover the surface of steel / cast iron, Block the iron atoms on the surface of steel / cast iron from contact with the air, so as to achieve the purpose of rust prevention. This kind of corrosion inh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/20
Inventor 朱国梅
Owner 华阳新兴科技(天津)集团有限公司
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