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Water-based release agent for aluminum alloy die casting and preparation method thereof

A mold release agent, aluminum alloy technology, used in casting molding equipment, metal processing equipment, casting molds, etc., can solve problems such as unfriendly people and the environment, achieve good film-forming effect, reduce emulsification difficulty, and excellent heat resistance. Effect

Active Publication Date: 2014-06-04
上海福岛新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of water-based aluminum alloy die-casting release agent with excellent heat resistance and lubricity and good film-forming effect and its preparation method. The problem of being unfriendly to people and the environment

Method used

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  • Water-based release agent for aluminum alloy die casting and preparation method thereof
  • Water-based release agent for aluminum alloy die casting and preparation method thereof
  • Water-based release agent for aluminum alloy die casting and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Formula:

[0023]

[0024] The rest is deionized water

[0025] 2. Preparation method: 15kg of dimethyl silicone oil, 8kg of long-chain alkyl silicone oil, 5kg of paraffin wax, 5kg of microcrystalline wax, 4kg of fatty alcohol polyoxyethylene (5) ether, 1.5kg of fatty alcohol polyoxyethylene (25 ) ether and 1.5kg of alkylphenol polyoxyethylene (10) ether were heated and kept at 70°C, mixed and stirred well, and 30kg of deionized water was slowly added in batches and in small amounts under stirring to make O / W The pre-emulsion is passed through a colloid mill, and 1.5 kg of triethanolamine oleate, 0.3 kg of benzisothiazolone, and the remaining deionized water are added to make a water-based release agent with an emulsion particle size of about 0.1 μm.

Embodiment 2

[0027] 1. Formula:

[0028]

[0029]

[0030] The rest is deionized water

[0031] 2. Preparation method: mix 10kg of dimethyl silicone oil, 15kg of long-chain alkyl silicone oil, 3kg of ozokerite wax, 3kg of microcrystalline wax, 5kg of fatty alcohol polyoxyethylene (7) ether, 5kg of fatty alcohol polyoxyethylene (20 ) ether and 5kg of isomeric tridecanol polyoxyethylene (9) ether were heated and kept at 80°C, mixed and stirred well, and 35kg of deionized water was slowly added in batches and in small amounts under stirring to make O / Take the pre-emulsion, pass it through a colloid mill, and add 1 kg of diethanolamine, 1 kg of isothiazolinone, and the remaining deionized water to make a water-based release agent with an emulsion particle size of about 0.3 μm.

Embodiment 3

[0033] 1. Formula:

[0034]

[0035] The rest is deionized water

[0036] 2. Preparation method: mix 25kg simethicone oil, 6kg hydroxyhydrocarbyl silicone oil, 2kg ozokerite wax, 3kg microcrystalline wax, 2kg fatty alcohol polyoxyethylene (3) ether, 3kg sorbitan fatty acid ester and 1kg The isomeric tridecyl alcohol polyoxyethylene (6) ether is heated and kept at 75°C, mixed and stirred well, and 40kg of deionized water is slowly added in batches and a small amount under stirring to make an O / W pre-emulsion. Pass through a colloid mill, add 1.5 kg of benzotriazole, 0.3 kg of benzisothiazolone, and the remaining deionized water to make a water-based release agent with an emulsion particle size of about 0.2 μm.

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Abstract

The invention discloses a water-based release agent for aluminum alloy die casting and a preparation method thereof. The release agent comprises, by mass, 10 to 30% of dimethicone, 5 to 15% of modified silicone oil, 5 to 20% of a wax composition, 4 to 15% of a surfactant, 1 to 3% of an anti-rust corrosion inhibitor and 0.1 to 1% of a bactericide, with the balance being deionized water. The preparation method comprises the following steps: heating dimethicone, modified silicone oil, the wax composition and the surfactant to a temperature of 70 to 80 DEG C and carrying out uniform mixing with stirring; slowly adding deionized water accounting for 30 to 40% of the total weight of the release agent with stirring in batches so as to prepare an oil-in-water O / W pre-emulsion; and carrying out grinding by using a colloid mill and adding the anti-rust corrosion inhibitor, the bactericide and residual deionized water so as to obtain the water-based release agent with an emulsion particle size of 0.1 to 0.4 mu m. According to the invention, modified silicone oil is used as main base oil, so emulsification difficulty is lowered down, heat resistance is improved, and good high temperature stability is obtained; the wax composition has excellent lubrication capability and a good film forming effect. The release agent has excellent heat resistance, excellent lubricity and a good film forming effect.

Description

Technical field: [0001] The invention relates to a water-based aluminum alloy die-casting release agent and a preparation method thereof. Background technique: [0002] Aluminum alloy die-casting is widely used in automobile, electronics, communication and other industries. Mold release agents are indispensable materials for the die casting process. Among them, the emulsion-like water-based die-casting release coating is most widely used in the aluminum alloy die-casting process because of its excellent high-temperature film-forming properties, cooling lubricity, convenient use, protection of the working environment, and smooth surface of the obtained castings. [0003] Some water-based die-casting release agents on the domestic market often use mineral oil and animal fat as the base oil, which generally have the disadvantages of poor adsorption, insufficient lubricating performance, and poor stability at high temperatures. Simethicone oil has the characteristics of low su...

Claims

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Application Information

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IPC IPC(8): B22C3/00
Inventor 宋铁成夏丽萍戴金星宋传军
Owner 上海福岛新材料科技有限公司
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