CN103831393A - Water-based release agent for aluminum alloy die casting and preparation method thereof - Google Patents
Water-based release agent for aluminum alloy die casting and preparation method thereof Download PDFInfo
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- CN103831393A CN103831393A CN201310746442.6A CN201310746442A CN103831393A CN 103831393 A CN103831393 A CN 103831393A CN 201310746442 A CN201310746442 A CN 201310746442A CN 103831393 A CN103831393 A CN 103831393A
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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:
The present invention relates to a kind of water-based aluminium alloy compression casting releasing agent and preparation method thereof.
Background technology:
Aluminium alloy compression casting, is widely used in the industries such as automobile, electronics, communication.Releasing agent is the indispensable material of press casting procedure.Wherein the water base die casting mould wash of emulsion form has the advantages such as good high temperature film forming, cooling and lubricating, easy to use, protection operating environment, gained cast(ing) surface are bright and clean because of it, and that in aluminium alloy compression casting process, applies is the most extensive.
Some water base casting mold-releasing agents on domestic market, often select mineral oil and animal fat as base oil, and ubiquity absorption affinity is poor, and greasy property is excellent not, the shortcoming that high temperatures is poor.It is low that dimethicone has surface tension, good heat resistance, and the feature such as solubility parameter is low, is a kind of very good release agent material.But common dimethicone is because polarity is little, more difficult emulsification, poor stability.Silicone oil through modification can reduce emulsification difficulty, is better than common dimethicone simultaneously aspect resistance to elevated temperatures.
Summary of the invention:
The object of the present invention is to provide a kind of heat resistance, lubricity excellence, water-based aluminium alloy compression casting releasing agent that film-formation result is good and preparation method thereof, this aluminium alloy compression casting releasing agent can also solve in existing releasing agent the disagreeableness problem of human and environment.
Technical scheme of the present invention is:
A kind of water-based aluminium alloy compression casting releasing agent, is made up of the component of following percentage by weight:
All the other are deionized water.
The optimization formula of above-mentioned water-based aluminium alloy compression casting releasing agent is:
All the other are deionized water.
Preferably, described dimethyl-silicon oil viscosity is 1000-50000cs, and preferred viscosities is 2000-30000cs.
Preferably, described modified silicon oil is selected from one or more any combination in methyl phenyl silicone oil, long-chain alkyl-silicone oil, long-chain alkyl-phenyl silicone oil, hydroxyl alkyl silicone oil, composite modified silicone oil.
Preferably, described Wax composition is the composition of paraffin and microwax.
Preferably, described surfactant is non-ionic surface active agent, is selected from one or more any combination in AEO, APES, aliphatic alcohol polyethenoxy polyethenoxy ether, sorbitan fatty acid ester, sorbitan polyoxyethylene fatty acid ester.
Preferably, described rust inhibitor is selected from one or more any combination in triethanolamine oleate, diethanol amine, MEA, hexamethylenetetramine, BTA.
Preferably, described bactericide is selected from one or more any combination in OIT, benzisothia oxazolone, the chloro-3-methyl-phenol of 4-, s-triazine, glutaraldehyde.
The preparation method of water-based aluminium alloy compression casting releasing agent of the present invention is as follows: by required solid content, dimethicone, modified silicon oil, Wax composition, surfactant are heated in high speed dispersion instrument and remain on 70-80 DEG C, mix and blend is abundant, under stirring, adding slowly, in batches total amount is the deionized water of releasing agent gross weight 30-40%, make oil-in-water O/W pre-emulsion, pass through colloid mill, and add rust inhibitor, bactericide, residue deionized water, make the aqueous release agent of emulsion particle diameter at 0.1-0.4 μ m.
Beneficial effect of the present invention:
The present invention is using on the basis of dimethicone, increases and uses modified silicon oil as a kind of main base oil wherein, has reduced emulsification difficulty, has improved heat resistance, high-temperature stability is good simultaneously; In addition, the complex wax that has used paraffin and microwax to be composited, the lubricating ability excellence of this complex wax, film-formation result is good, can improve the surface-brightening of foundry goods.Finally make the casting mold-releasing agent of making there is good heat resistance, lubricity excellence, film-formation result is good.
Embodiment 1:
One, formula:
All the other are deionized water
Two, preparation method: by 15kg dimethicone, 8kg long-chain alkyl-silicone oil, the paraffin of 5kg, the microwax of 5kg, aliphatic alcohol polyethenoxy (5) ether of 4kg, alkylphenol-polyethenoxy (10) ether of 1.5kg aliphatic alcohol polyethenoxy (25) ether and 1.5kg heats and remains on 70 DEG C, mix and blend is abundant, slow under stirring, in batches, marginally add 30kg deionized water, make O/W pre-emulsion, pass through colloid mill, and add 1.5kg triethanolamine oleate, 0.3kg benzisothia oxazolone, residue deionized water, make the aqueous release agent of emulsion particle diameter in 0.1 μ m left and right.
Embodiment 2:
One, formula:
All the other are deionized water
Two, preparation method: by 10kg dimethicone, 15kg long-chain alkyl-silicone oil, the ceresine of 3kg, the microwax of 3kg, aliphatic alcohol polyethenoxy (7) ether of 5kg, isomerous tridecanol polyoxyethylene (9) ether of 5kg aliphatic alcohol polyethenoxy (20) ether and 5kg heats and remains on 80 DEG C, mix and blend is abundant, slow under stirring, in batches, marginally add 35kg deionized water, make O/W pre-emulsion, pass through colloid mill, and add 1kg diethanol amine, 1kg OIT, residue deionized water, make the aqueous release agent of emulsion particle diameter in 0.3 μ m left and right.
Embodiment 3:
One, formula:
All the other are deionized water
Two, preparation method: by 25kg dimethicone, 6kg hydroxyl alkyl silicone oil, the ceresine of 2kg, the microwax of 3kg, aliphatic alcohol polyethenoxy (3) ether of 2kg, isomerous tridecanol polyoxyethylene (6) ether of 3kg sorbitan fatty acid ester and 1kg heats and remains on 75 DEG C, mix and blend is abundant, slow under stirring, in batches, marginally add 40kg deionized water, make O/W pre-emulsion, pass through colloid mill, and add 1.5kg BTA, 0.3kg benzisothia oxazolone, residue deionized water, make the aqueous release agent of emulsion particle diameter in 0.2 μ m left and right.
Embodiment 4:
One, formula:
All the other are deionized water
Two, preparation method: the sorbitan polyoxyethylene fatty acid ester of the microwax of the paraffin of 30kg dimethicone, 5kg phenyl silicone oil, 5kg, 15kg, 1.5kg, 2.5kg aliphatic alcohol polyethenoxy (20) ether are heated and remains on 80 DEG C, mix and blend is abundant, under stirring, slowly, in batches, marginally add 32kg deionized water, make O/W pre-emulsion, pass through colloid mill, and add 2kg hexamethylenetetramine, 0.3kg glutaraldehyde, residue deionized water, make the aqueous release agent of emulsion particle diameter in 0.4 μ m left and right.
Effect comparative experimental example
Product of the present invention and like product contrast, and its performance test results is compared as follows shown in table 1.
The comparison of table 1 the performance test results
Found out by upper table data, this product decomposition starting temperature is higher with violent relative existing certain product of decomposition temperature, illustrate that invention product has excellent heat resistance, make this product keep good high-temperature stability in the high temperature die casting demoulding, bright property is good, does not produce silicon spot, has improved stripping result.
Claims (10)
1. a water-based aluminium alloy compression casting releasing agent, is characterized in that, wherein each component and mass percent are as follows:
All the other are deionized water;
Described surfactant is non-ionic surface active agent.
2. water-based aluminium alloy compression casting releasing agent according to claim 1, is characterized in that, wherein each component and mass percent are:
All the other are deionized water.
3. water-based aluminium alloy compression casting releasing agent according to claim 1 and 2.It is characterized in that, described dimethyl-silicon oil viscosity is 1000-50000cs.
4. water-based aluminium alloy compression casting releasing agent according to claim 3, is characterized in that, described dimethyl-silicon oil viscosity is 2000-30000cs.
5. water-based casting mold-releasing agent according to claim 1 and 2, it is characterized in that, described modified silicon oil is selected from one or more any combination in methyl phenyl silicone oil, long-chain alkyl-silicone oil, long-chain alkyl-phenyl silicone oil, hydroxyl alkyl silicone oil, amido silicon oil, composite modified silicone oil.
6. water-based aluminium alloy compression casting releasing agent according to claim 1 and 2, is characterized in that, described Wax composition is the composition of paraffin and microwax.
7. water-based aluminium alloy compression casting releasing agent according to claim 1 and 2, it is characterized in that, described non-ionic surface active agent, is selected from one or more any combination in AEO, APES, aliphatic alcohol polyethenoxy polyethenoxy ether, sorbitan fatty acid ester, sorbitan polyoxyethylene fatty acid ester.
8. water-based aluminium alloy compression casting releasing agent according to claim 1 and 2, it is characterized in that, described rust inhibitor is selected from one or more any combination in triethanolamine oleate, diethanol amine, MEA, hexamethylenetetramine, BTA.
9. water-based aluminium alloy compression casting releasing agent according to claim 1 and 2, is characterized in that, described bactericide is selected from one or more any combination in OIT, benzisothia oxazolone, the chloro-3-methyl-phenol of 4-, s-triazine, glutaraldehyde.
10. the preparation method of a water-based aluminium alloy compression casting releasing agent according to claim 1, it is characterized in that, dimethicone, modified silicon oil, Wax composition, surfactant are heated in high speed dispersion instrument and remain on 70-80 DEG C, mix and blend is abundant, under stirring, adding slowly, in batches total amount is the deionized water of releasing agent gross weight 30-40%, make oil-in-water O/W pre-emulsion, pass through colloid mill, and add rust inhibitor, bactericide, residue deionized water, make the aqueous release agent of emulsion particle diameter at 0.1-0.4 μ m.
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| CN105689638A (en) * | 2016-04-18 | 2016-06-22 | 苏州兴业材料科技股份有限公司 | Water-based aluminum alloy die-casting mold releasing agent and preparation method thereof |
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| CN106566637A (en) * | 2016-10-26 | 2017-04-19 | 广西大学 | Aluminum alloy waterborne emulsion release agent |
| CN106670379A (en) * | 2017-03-14 | 2017-05-17 | 沈阳大学 | Water-based paint for aluminum alloy die casting |
| CN107803460A (en) * | 2017-12-07 | 2018-03-16 | 广州旭太材料科技有限公司 | A kind of releasing agent and preparation method thereof |
| CN107876692A (en) * | 2017-09-26 | 2018-04-06 | 上海力太化学有限公司 | A kind of high-performance water-based die cast metal releasing agent, preparation method and applications |
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| CN109097160A (en) * | 2018-07-19 | 2018-12-28 | 芜湖维软新材料有限公司 | Improve the silicon oil compound adjuvant of surface tension of liquid |
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