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Environmentally friendly dispersed aqueous aluminium alloy release agent without aluminum silicon powder

A silicon powder, environment-friendly technology, applied in the field of environment-friendly silicon-free powder dispersed water-based aluminum alloy release agent, can solve the problems of uneven film thickness, poor safety and sanitation quality, poor reading and writing of hard disk, etc., to reduce production costs, Low price, highlighting the effect of economical use

Inactive Publication Date: 2015-09-23
SHANGHAI YUSHIRO CHEM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silicone oil-containing emulsion release agents have been around for a long time, the preparation technology and process are mature, and they have good anti-oxidation and corrosion resistance. Good (thermal decomposition rate ≥ 30%), general demoulding effect (uneven thickness of the film, partial rupture of the film, and scratches caused by the biting of the workpiece and the mold when the film is released), poor anti-sintering performance (in the emulsion The organic matter is easy to carbonize at high temperature, resulting in black spots on the surface of the workpiece); the second is that the silicone oil emulsion affects the subsequent coating of the workpiece (the silicone oil volatilized at high temperature is adsorbed on the surface of electronic aluminum castings, which can easily lead to circuit short circuits and poor reading and writing of hard disks) The third is that the formula generally contains toxic and harmful substances such as heavy metals, and the safety and health quality is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An environment-friendly silicon-free powder dispersion water-based aluminum alloy release agent, the following components by weight percentage are mixed and stirred to obtain the product:

[0022] Aluminum Magnesium Silicate 18%

[0023] Magnesium silicate 5%

[0024] Lauric acid 6%

[0025] Sebacic acid 4%

[0026] Sodium Petroleum Sulfonate 5%

[0027] 400 Ethylene Oxide Hydroxy Alcohol or Alkyl Polyglycoside 4%

[0028] Water 58%.

Embodiment 2

[0030] An environment-friendly silicon-free powder dispersion water-based aluminum alloy release agent, the following components by weight percentage are mixed and stirred to obtain the product:

[0031] Film-forming powder…………………… 15~20% (eg 15%, 18%, 20%)

[0032] Anti-sintering powder……………………… 4~10% (for example 4%, 7%, 10%)

[0033] Antirust agent………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………

[0034] Surfactant………………………… 5~10% (Example 5%, 8%, 10%)

[0035] Water…………………………………………….

[0036] The film-forming powder is aluminum magnesium silicate and / or sodium aluminate.

[0037] The anti-sintering powder is one or more of magnesium silicate, magnesium oxide, and aluminum oxide.

[0038] The antirust agent is one or more of lauric acid, sebacic acid, pelargonic acid, and sodium petroleum sulfonate.

[0039] The surfactant is one or more of 400 ethylene oxide hydroxyl alcohol, alkyl ...

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PUM

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Abstract

The present invention discloses an environmentally friendly dispersed aqueous aluminium alloy release agent without aluminum silicon powder. The release agent comprises a film-forming powder, an anti-sintering powder, an anti-rust agent, a surfactant and water. The product provided by the invention has excellent anti-sintering performance, demoulding performance and heat resistance.

Description

technical field [0001] The invention relates to an environment-friendly silicon-free powder-dispersed water-based aluminum alloy release agent. Background technique [0002] Aluminum alloy release agent is an auxiliary agent that must be used in the aluminum alloy die casting process. In recent years, with the increase in the size of precision molds and die-casting products, the complexity of the structure, the continuous improvement of the clamping force of large-scale die-casting machines, and the requirements for mold quality, service life, and post-processing of die-casting products, aluminum alloy release agents The performance and quality requirements are getting higher and higher. At the same time, as the country is vigorously promoting the construction of a resource-saving and environment-friendly society, users are also paying more attention to the economical use and safety and hygiene of products. Currently commercially available aluminum alloy release agents bas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C3/00
Inventor 林丽静常建忠阿部聪俞威吴志桥
Owner SHANGHAI YUSHIRO CHEM IND