CN108339930A - A kind of water based mold release agent and preparation method thereof applied to aluminum alloy die casting - Google Patents
A kind of water based mold release agent and preparation method thereof applied to aluminum alloy die casting Download PDFInfo
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- CN108339930A CN108339930A CN201810134438.7A CN201810134438A CN108339930A CN 108339930 A CN108339930 A CN 108339930A CN 201810134438 A CN201810134438 A CN 201810134438A CN 108339930 A CN108339930 A CN 108339930A
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- Prior art keywords
- mold release
- die casting
- aluminum alloy
- water based
- water
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
Abstract
The present invention provides the present invention provides a kind of water based mold release agents applied to aluminum alloy die casting, including following components in percentage by weight：Water 51.5 70.3%；Triethanolamine 0.5 1%；Silicone oil emulsion 14 25%；Silicon wax emulsion 8 10%；Polythene wax emulsion 7 12%；Fungicide 0.2 0.5%.The present invention also provides a kind of preparation methods of the water based mold release agent applied to aluminum alloy die casting.The present invention can greatly improve the yield rate in the last handling process of surface, reduce the burden of cleaning process, effectively improve the yield rate of surface treatment, reduce nonscheduled down time, significantly reduce cost；And water based mold release agent emulsion intercalation method is maintained, has good compatibility and affinity to the other compositions in system.
Description
Technical field
The present invention relates to water based mold release agent fields, in particular to a kind of applied to the water base de- of aluminum alloy die casting
Mould agent and preparation method thereof.
Background technology
Aluminium alloy is processed as light weight, intensity height, corrosion resistant high-test metal by compression casting (abbreviation die casting)
At various proximate matters, it is widely used in many industrial circles.Aluminum alloy materials heating fusing, injects mould type through high pressure in the liquid state
Chamber, and head part depanning is molded in a short time, to ensure the smooth depanning of product, it is necessary to be sprayed before the injection on mold cavity surface
Coating release agent.
In press casting procedure, releasing agent plays the role of three aspects：(1) before molten metal injection, by spraying releasing agent,
Isolation film is formed in die surface, makes cavity directly washing away from molten metal；(2) contribute to molten metal to enter cavity, make to fill
Type is intact；(3) it can make it easier to demould after casting molding.The casting mold-releasing agent of function admirable should meet claimed below：(1) it lubricates
Good with demolding performace, releasing agent forms complete uniform lubricating film in metal surface at high temperature；(2) cooling and thermal insulation is good,
Releasing agent has cooling and heat-blocking action, keeps mold temperature balance, improves service life；(3) thermally and chemically stability is high, takes off
Mould agent does not have corrosivity in use temperature range to mold, not carbon distribution, makes the pure white light of die casting, does not influence spray painting, plating
The coating process Deng after.Among these, releasing agent can be divided into oil-based release agent, water based mold release agent and powdered mold release agents.Water based mold release agent
Have many advantages, such as that release property is good, cooling effect is strong, pollution-free, cast(ing) surface is bright and clean, few stomata, be conducive to automation mechanized operation.
Water based mold release agent basis is base oil, emulsifier and water.The organic silicon releasing agent of base oil is made of silicone oil
Stablize with performance, has good demoulding property, it is cost-effective, it is optimum releasing agent the advantages of nonhazardous.Good releasing agent
Die casting can be helped smoothly to be taken out from mold, reduce the abrasion of casting and mold cavity, additionally adjustable die is each
Partial temperature ensures the quality of die casting to improve die life.Organic matter thermal stability is poor, and carbonization fouling easily occurs
Phenomenon influences product appearance and die life.3C casing parts are very high to surface treatment requirement, and die casting should have preferably
Surface smoothness, it is desirable that corresponding releasing agent does not corrode mold and workpiece, good to subsequent handling adaptability.
Under the premise of ensureing thinned water, alloying component and die-casting process and die surface processing correctly, releasing agent pair
The influence of die casting appearance plays a decisive role.Silicone oil heat resistance and release property are good, but coating is poor, organic wax filming performance
It is good, at high temperature easily carbon distribution is generated in die surface.Die casting and mold need manual cleaning or by cleaning the works such as ball blast
Sequence removes carbon remover and improves appearance.Silicon wax combines molding effect and the spreading ability of organosilicon of organic wax, is applicable to
The application of lubrication.
Current water based mold release agent is using water as carrier, and emulsifier is by base oil with the even particulate dispersion of superfine cause in water
Phase is aided with the multiple additives such as EP agent, fungicide and antirust agent and is formulated, the slight variations of portions additive,
Demolding performace may have prodigious difference, and larger variation is also brought along to cost and price.Eco-power releasing agent is general
Demoulding can be met to require, the residual jaundice of die casting surface organic matter is often resulted in and black, carbon distribution is applied after influencing and product gloss
And beauty.
Invention content
In consideration of it, the present invention provides it is a kind of can reduce cleaning process burden, reduce cost be applied to aluminium alloy pressure
Water based mold release agent of casting and preparation method thereof.
Thus, on the one hand, the present invention provides a kind of water based mold release agents applied to aluminum alloy die casting comprising following
The component of weight percent：
Further, a kind of above-mentioned water based mold release agent applied to aluminum alloy die casting includes the group of following weight percent
Point：Water 60-66%；Triethanolamine 0.5-0.8%；Silicone oil emulsion 17-20%；Silicon wax emulsion 8-9%；Polythene wax emulsion 8-
10%；Fungicide 0.2-0.5%.
Further, a kind of above-mentioned water based mold release agent applied to aluminum alloy die casting includes the group of following weight percent
Point：Water 63%；Triethanolamine 0.7%；Silicone oil emulsion 18%；Silicon wax emulsion 9%；Polythene wax emulsion 9%；Fungicide 0.3%.
Further, a kind of above-mentioned water based mold release agent applied to aluminum alloy die casting includes the group of following weight percent
Point：Water 51.5%；Triethanolamine 1%；Silicone oil emulsion 25%；Silicon wax emulsion 10%；Polythene wax emulsion 12%；Fungicide
0.5%.
Further, a kind of above-mentioned water based mold release agent applied to aluminum alloy die casting includes the group of following weight percent
Point：Water 70.3%；Triethanolamine 0.5%；Silicone oil emulsion 14%；Silicon wax emulsion 8%；Polythene wax emulsion 7%；Fungicide
0.2%.
Further, above-mentioned silicone oil emulsion is to step figure silicone oil emulsion 334-50.
Further, above-mentioned silicon wax emulsion is watt gram silicon wax emulsion WACKER E32.
Further, above-mentioned polythene wax emulsion is BASF polythene wax emulsion WE-7.
Further, above-mentioned fungicide is BIT-20 fungicide.
On the other hand, the present invention provides a kind of preparation method of the water based mold release agent applied to aluminum alloy die casting,
Include the following steps：
1) according to above-mentioned proportioning, prepare the water base casting mold-releasing agent of aluminium alloy prepares material；
2) triethanolamine and 40% water are added in container, sequentially added under stirring silicone oil emulsion, silicon wax emulsion and
Polythene wax emulsion；
3) 60% water and fungicide are added after stirring, stirs evenly, obtains finished product.
A kind of water based mold release agent and preparation method thereof applied to aluminum alloy die casting provided by the present invention, compared to existing
There is technology to has the following advantages：
1) yield rate in the last handling process of surface can be greatly improved, the burden of cleaning process is reduced, effectively improves table
The yield rate of surface treatment reduces nonscheduled down time, significantly reduces cost；
2) wetting, dispersion and solubilization of emulsifier maintain water based mold release agent emulsion intercalation method, to its in system
His ingredient has good compatibility and affinity.
Specific implementation mode
The exemplary embodiment of the disclosure is described in more detail below.Although showing the exemplary implementation of the disclosure
Example, it being understood, however, that may be realized in various forms the disclosure without should be limited by embodiments set forth here.On the contrary,
These embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can completely be communicated to the scope of the present disclosure
Those skilled in the art.
Embodiment one：
It adds water 51.5%, triethanolamine 1%, step figure silicone oil emulsion 334-50 25%, watt gram silicon wax emulsion
WACKERE32 10%, BASF polythene wax emulsion WE-7 12%, BIT-20 fungicide 0.5%.
Preparation process is as follows：Triethanolamine and part water are added in clean container, is sequentially added under high-speed stirred state
Figure silicone oil emulsion 334-50, watt gram silicon wax emulsion WACKER E32 and BASF polythene wax emulsion WE-7 12% are stepped, is persistently stirred
Remaining water and BIT-20 fungicide is added after mixing a period of time, stirring at low speed is uniform, and finished emulsion is white, even and fine
Greasy, centrifugation stands not stratified.
Wherein, water is used as solvent；Triethanolamine is used as antirust agent；Step figure silicone oil emulsion 334-50 rise demoulding and
The effect of lubrication；Watt gram silicon wax emulsion WACKER E32 play lubrication, assisted demoulding and improve stability of emulsion；BASF
Polythene wax emulsion WE-7 plays film forming, assisted demoulding and the effect for improving stability of emulsion.
Silicone oil heat resistance, release property are good, and coating is poor, at high price；Low temperature adhesion spreadability is good in polyethylene wax, Yi Chen
Product, valence are high；Synthetic ester high-temperature stability is good, and carbon residue is few, and excellent lubricating properties, toxicity is extremely low, and high temperature adhesion spreadability is good, valence
High, difficult emulsification.Take into account releasing agent various functions, environmental protection and cost consideration, this formula selection silicone oil emulsion, polythene wax emulsion
Mixture forms by a certain percentage with silicon wax emulsion.
Silicon wax emulsion combines the advantages of organosilicon and organic wax, enhancing demoulding and lubricating ability, while improving die casting
Appearance.
Embodiment two：
Other are identical as embodiment one, the difference is that proportioning：It adds water 70.3%, triethanolamine 0.5%, step figure silicon
Fat liquor 334-50 14%, watt gram silicon wax emulsion WACKER E32 8%, BASF polythene wax emulsion WE-7 7%, BIT-
20 fungicide 0.2%.
Embodiment three：
Other are identical as embodiment one, the difference is that proportioning：It adds water 63%, triethanolamine 0.7%, step figure silicone oil
Lotion 334-50 18%, watt gram silicon wax emulsion WACKER E32 9%, BASF polythene wax emulsion WE-7 9%, BIT-20
Fungicide 0.3%.
Example IV：
Other are identical as embodiment one, the difference is that proportioning：It adds water 60%, triethanolamine 0.8%, step figure silicone oil
Lotion 334-50 20%, watt gram silicon wax emulsion WACKER E32 9%, BASF polythene wax emulsion WE-7 10%, BIT-20
Fungicide 0.2%.
Embodiment five：
Other are identical as embodiment one, the difference is that proportioning：It adds water 66%, triethanolamine 0.5%, step figure silicone oil
Lotion 334-50 17%, watt gram silicon wax emulsion WACKER E32 8%, BASF polythene wax emulsion WE-7 8%, BIT-20
Fungicide 0.5%.
The comparison of the experimental data of the present embodiment 1-5 and comparative example (prior art) is as shown in the table：
According to above-mentioned comparison, it can be seen that embodiment 1 to 5 is compared to comparative example (prior art) in pH value, ambient-temp-stable
It is all improved in property, shear stability, centrifugal stability and thermal stability these indexs.
Above-described embodiment is specifically in aluminium alloy mobile phone shell 1:80 (ADC12,250T mechanical stiffness die casting machine, 260 DEG C of mould temperature) on probation,
Demoulding is good, and casting is perfect to fall into, and the white light in surface is clean, no oil stripping, does not influence the subsequent handlings such as spray painting, plating.
Thus, a kind of water based mold release agent and preparation method thereof applied to aluminum alloy die casting that the present embodiment is provided,
It has the following advantages compared to the prior art：
1) this product is added to siloxane wax lotion, can greatly improve the yield rate in the last handling process of surface, reduces clear
The burden for washing process effectively improves the yield rate of surface treatment, reduces nonscheduled down time, and cost is significantly reduced for client；
2) wetting, dispersion and solubilization of emulsifier maintain the stabilization of water based mold release agent lotion；Emulsifier and use
The determination of amount and emulsification optimum process condition is difficult to grasp, and most of emulsifying effectiveness is caused to be difficult to reach satisfactory degree.
WACKER E32 are a kind of admittedly containing 40% nonionic siloxane wax emulsion, uniform particle sizes, stability height, to other in system
Ingredient has good compatibility and affinity.
Wherein, the stability of releasing agent is defined as follows：
Room temperature stability：The releasing agent prepared is stood at ambient temperature, has seen whether lamination；
Shear stability：10min is stirred with homogenizer after lotion is diluted 80 times, is not demulsified, is not stratified, not precipitating
For stabilization；
Centrifugal stability：15min is centrifuged at 3000r/min after lotion is diluted 80 times, is not demulsified, is not stratified, not sinking
It forms sediment to stablize；
Thermal stability：Lotion is heated in test tube and boils 10min, if lotion is not any change as stabilization.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of water based mold release agent applied to aluminum alloy die casting, which is characterized in that including following components in percentage by weight：
2. a kind of water based mold release agent applied to aluminum alloy die casting according to claim 1, which is characterized in that including with
The component of lower weight percent：Water 60-66%；Triethanolamine 0.5-0.8%；Silicone oil emulsion 17-20%；Silicon wax emulsion 8-9%；
Polythene wax emulsion 8-10%；Fungicide 0.2-0.5%.
3. a kind of water based mold release agent applied to aluminum alloy die casting according to claim 1, which is characterized in that including with
The component of lower weight percent：Water 63%；Triethanolamine 0.7%；Silicone oil emulsion 18%；Silicon wax emulsion 9%；Polythene wax emulsion
9%；Fungicide 0.3%.
4. a kind of water based mold release agent applied to aluminum alloy die casting according to claim 1, which is characterized in that including with
The component of lower weight percent：Water 51.5%；Triethanolamine 1%；Silicone oil emulsion 25%；Silicon wax emulsion 10%；Polyethylene wax breast
Liquid 12%；Fungicide 0.5%.
5. a kind of water based mold release agent applied to aluminum alloy die casting according to claim 1, which is characterized in that including with
The component of lower weight percent：Water 70.3%；Triethanolamine 0.5%；Silicone oil emulsion 14%；Silicon wax emulsion 8%；Polyethylene wax breast
Liquid 7%；Fungicide 0.2%.
6. according to a kind of any water based mold release agents applied to aluminum alloy die casting of claim 1-5, which is characterized in that
The silicone oil emulsion is to step figure silicone oil emulsion 334-50.
7. according to a kind of any water based mold release agents applied to aluminum alloy die casting of claim 1-5, which is characterized in that
The silicon wax emulsion is watt gram silicon wax emulsion WACKER E32.
8. according to a kind of any water based mold release agents applied to aluminum alloy die casting of claim 1-5, which is characterized in that
The polythene wax emulsion is BASF polythene wax emulsion WE-7.
9. according to a kind of any water based mold release agents applied to aluminum alloy die casting of claim 1-5, which is characterized in that
The fungicide is BIT-20 fungicide.
10. a kind of preparation method of water based mold release agent applied to aluminum alloy die casting, which is characterized in that include the following steps：
1) according to any proportionings of claim 1-9, prepare the water base casting mold-releasing agent of aluminium alloy prepares material；
2) triethanolamine and 40% water are added in container, silicone oil emulsion, silicon wax emulsion and poly- second are sequentially added under stirring
Alkene wax emulsion；
3) 60% water and fungicide are added after stirring, stirs evenly, obtains finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810134438.7A CN108339930B (en) | 2018-02-09 | 2018-02-09 | Water-based release agent applied to aluminum alloy die castings and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810134438.7A CN108339930B (en) | 2018-02-09 | 2018-02-09 | Water-based release agent applied to aluminum alloy die castings and preparation method thereof |
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Cited By (4)
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| CN109014023A (en) * | 2018-08-29 | 2018-12-18 | 昆山帝邦铸造科技有限公司 | A kind of water based mold release agent and preparation method thereof and application method |
| CN109434010A (en) * | 2018-12-14 | 2019-03-08 | 上海樱花化研化工科技有限公司 | A kind of aluminum alloy mould release agent composition and preparation method thereof |
| CN111360195A (en) * | 2020-04-02 | 2020-07-03 | 佛山市三水区正田金属制品有限公司 | High-temperature-resistant mold release agent |
| CN113134566A (en) * | 2021-04-28 | 2021-07-20 | 奎克化学（中国）有限公司 | Die-casting release agent for aluminum alloy structural part |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202100032024A1 (en) * | 2021-12-21 | 2023-06-21 | Maurizio Sala | Process of preparing a release agent for die casting. |
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