Water-based die-casting release agent for aluminum alloy casting

A release agent, aluminum alloy technology, applied in nanotechnology for materials and surface science, casting molding equipment, casting molds, etc., can solve the problems of reducing adhesion and demoulding resistance, easy peeling of the isolation film, etc., to achieve The effect of reducing churn

Active Publication Date: 2021-12-07
HEXIAN KEJIA VALVE CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For example, Chinese patent CN2017107692172 discloses a water-based release agent and a preparation method thereof, the water-based release agent includes stearate, iron oxide red, xanthan gum, sodium bentonite, sodium hexametaphosphate, defoamer , adhesives, preservatives and water; the water-based release agent uses tap water as the carrier of the release agent, and the water-based release agent can significantly reduce the adhesion of the type and core to the mold and the demoulding resistance, ensuring the type and core. Integrity rate, increasing the mold release life cycle; however, when this type of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A water-based die-casting release agent for aluminum alloy casting, comprising the following components in parts by weight: 12 parts of dimethyl silicone oil, 30 parts of hydroxyl silicone oil, 5 parts of liquid paraffin, 4 parts of emulsifier, 120 parts of water 1 part, 1 part of isopropanol, 0.8 part of urea, 0.3 part of benzoic acid, 1.0 part of borax, 1.5 parts of composite porous filler, 0.1 part of defoamer;

[0046] The emulsifier is composed of Span-80 and OP-10 in a mass ratio of 1.0:2.0;

[0047] The preparation method of described composite porous filler comprises the steps:

[0048] 1) Weigh 6.2g of cetyltrimethylammonium bromide, add it to a mixture of 170mL of absolute ethanol and 150mL of distilled water, stir at 100r / min for 20min at room temperature, and wait for cetyltrimethylammonium bromide After the ammonium is completely dissolved, add a mixed solution consisting of 21mL of ammonia water, 14.0mL of tetraethyl orthosilicate and 23mL of absolute eth...

Embodiment 2

[0055] A water-based die-casting release agent for aluminum alloy casting, comprising the following components in parts by weight: 15 parts of dimethyl silicone oil, 37 parts of hydroxyl silicone oil, 6 parts of liquid paraffin, 8 parts of emulsifier, 135 parts of water 1 part, 2 parts of isopropanol, 1.6 parts of urea, 0.5 part of benzoic acid, 1.4 parts of borax, 2.7 parts of composite porous filler, 0.2 part of defoamer;

[0056] The emulsifier is composed of Span-80 and OP-10 in a mass ratio of 1.6:1.4;

[0057] The preparation method of described composite porous filler comprises the steps:

[0058] 1) Weigh 7.0g cetyltrimethylammonium bromide, add it to a mixture of 180mL absolute ethanol and 165mL distilled water, stir at 150r / min for 30min at room temperature, and wait for cetyltrimethylammonium bromide After the ammonium is completely dissolved, add a mixed solution consisting of 22mL of ammonia water, 14.5mL of tetraethyl orthosilicate and 25mL of absolute ethanol, ...

Embodiment 3

[0065] A water-based die-casting release agent for aluminum alloy casting, comprising the following components in parts by weight: 18 parts of dimethyl silicone oil, 45 parts of hydroxyl silicone oil, 9 parts of liquid paraffin, 10 parts of emulsifier, 150 parts of water Parts, 3 parts of isopropanol, 2.1 parts of urea, 0.8 parts of benzoic acid, 1.6 parts of borax, 3.2 parts of composite porous filler, 0.3 parts of defoamer;

[0066] The emulsifier is composed of Span-80 and OP-10 in a mass ratio of 1.8:1.2;

[0067] The preparation method of described composite porous filler comprises the steps:

[0068] 1) Weigh 7.6g cetyltrimethylammonium bromide, add it to a mixture of 190mL absolute ethanol and 180mL distilled water, stir at 160r / min for 40min at room temperature, and wait until cetyltrimethylammonium bromide After the ammonium is completely dissolved, add a mixed solution composed of 23mL ammonia water, 14.8mL tetraethyl orthosilicate and 29mL absolute ethanol, wherein...

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Abstract

The invention discloses a water-based die-casting release agent for aluminum alloy casting, and relates to the technical field of release agents. In parts by weight, the water-based die-casting release agent comprises the following components: 12 to 18 parts of dimethyl silicone oil, 30 to 45 parts of hydroxyl silicone oil, 5 to 9 parts of liquid paraffin, 4 to 10 parts of an emulsifier, 120 to 150 parts of water, 1 to 3 parts of isopropanol, 0.8 to 2.1 parts of urea, 0.3 to 0.8 part of benzoic acid, 1.0 to 1.6 parts of borax, 1.5 to 3.2 parts of a composite porous filler and 0.1 to 0.3 part of a defoaming agent. According to the water-based die-casting release agent for the aluminum alloy casting provided by the invention, the prepared composite porous filler is introduced into a conventional release agent system, the composite porous filler can effectively improve the high-temperature molding property of the release agent, a complete isolating membrane without obvious pores can be formed under a high-temperature condition, and a casting prepared by spraying the composite porous filler to a mold and demolding is few in pores, smooth and clean in surface and free of carbon deposition, and the smoothness and integrity of the casting are improved.

Description

technical field [0001] The invention belongs to the technical field of release agents, and in particular relates to a water-based die-casting release agent for aluminum alloy casting. Background technique [0002] Die-casting release agent, also known as release agent, is an auxiliary agent that isolates the mold and the casting during the casting molding process. It can effectively prevent or reduce the mechanical damage of the molded casting when it is released from the mold. It plays an indispensable role in improving the appearance quality of castings and prolonging the service life of molds. [0003] The rapid development of the die-casting market has naturally led to a large demand for release agents. The mold release agent is an essential auxiliary agent for the production of metal die-casting products. Its main function is to help the metal die-casting products to be removed from the mold, and to maintain the integrity and post-processing of the products. In the di...

Claims

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Application Information

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IPC IPC(8): B22C3/00B22D17/20B22D17/22B22F1/00B22F9/24B82Y30/00B82Y40/00C23C18/18C23C18/42
CPCB22C3/00B22D17/22B22F9/24C23C18/42C23C18/1882B22D17/2007B82Y30/00B82Y40/00
Inventor 黎宏倪明主黎思瑶
Owner HEXIAN KEJIA VALVE CASTING
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