CN103331411B - Efficient, lossless, precision molding demoulding addictive for pressure casting and preparation method thereof - Google Patents
Efficient, lossless, precision molding demoulding addictive for pressure casting and preparation method thereof Download PDFInfo
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- CN103331411B CN103331411B CN201310205385.0A CN201310205385A CN103331411B CN 103331411 B CN103331411 B CN 103331411B CN 201310205385 A CN201310205385 A CN 201310205385A CN 103331411 B CN103331411 B CN 103331411B
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- additive
- demoulding
- releasing agent
- addictive
- die casting
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000005266 casting Methods 0.000 title claims abstract description 8
- 238000000465 moulding Methods 0.000 title abstract 2
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 42
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 15
- 239000001257 hydrogen Substances 0.000 claims abstract description 15
- -1 methyl hydrogen Chemical compound 0.000 claims abstract description 10
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 6
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 5
- 239000000654 additive Substances 0.000 claims description 41
- 230000000996 additive effect Effects 0.000 claims description 37
- 238000004512 die casting Methods 0.000 claims description 22
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 17
- 150000001336 alkenes Chemical class 0.000 claims description 16
- 239000003921 oil Substances 0.000 claims description 12
- 150000003376 silicon Chemical class 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 8
- 229910052697 platinum Inorganic materials 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000006482 condensation reaction Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 7
- 229920002545 silicone oil Polymers 0.000 abstract description 14
- CRSBERNSMYQZNG-UHFFFAOYSA-N 1 -dodecene Natural products CCCCCCCCCCC=C CRSBERNSMYQZNG-UHFFFAOYSA-N 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008676 import Effects 0.000 abstract description 3
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 abstract 2
- 229940069096 dodecene Drugs 0.000 abstract 2
- 238000010092 rubber production Methods 0.000 abstract 1
- 239000004945 silicone rubber Substances 0.000 abstract 1
- 150000002431 hydrogen Chemical class 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 239000007795 chemical reaction product Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 125000005504 styryl group Chemical group 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
- Lubricants (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses an efficient, lossless, precision molding demoulding addictive for pressure casting and a preparation method thereof. The addictive is modified silicone oil which is produced by modifying methyl hydrogen polysiloxane oil with dodecene and phenylethylene. The specific structure is shown in the description, wherein the X is between 5000 and 6000, and the Y is between 80 and 90. The addictive of mould release agent provided by the invention is modified with dodecene and phenylethylene. As an addictive of mould release agent, in the same demoulding conditions, the use amount of the addictive can be reduced by 20%, and the cost is reduced by 30% compared to the import level product. The addictive can be used as mould release agent to improve mould release effect and high-temperature resistance effect during aluminum alloy pressure casting, can be used as an addictive of internal release agent and high-temperature resistance mould release agent during silicone rubber production, and has a vast market prospect.
Description
Technical field
The present invention relates to a kind of demoulding additive, specifically, relate to efficient, harmless, the precise forming demoulding additive of a kind of die casting and preparation method, can as the releasing agent additive strengthening stripping result and high-temperature resistant result during aluminium alloy compression casting, and when silicon rubber is produced as the interior demoulding and resistant to elevated temperatures additive.
Background technology
The main centralizedly supply business of releasing agent of the aluminium die casting of present industrial use be DOW CORNING, watt gram etc.Releasing agent main feature on the market of present stage is single, and stripping result is pretty good, but yield rate is not high or high-temperature resistant result good, but production efficiency not good (production efficiency refers to the frequency of periodic cleaning mould).And after the aluminium casting mold-releasing agent demoulding in the market, carbon distribution is residual generally higher, affects the outward appearance of final products.
Summary of the invention
The above-mentioned defect of the releasing agent customer service of our improved, under the prerequisite not affecting its stripping result, increases its high-temperature stability, decreases residual.And the Stability Analysis of Structures that residual key is product will be solved, the active constituent content inside silicone oil is high, and segmented structure is stablized.
The object of this invention is to provide efficient, harmless, the precise forming demoulding additive of a kind of die casting and preparation method, this demoulding additive can increase stripping result during aluminium die casting, high lubricating effect, improve and turn over mould number of times, and high temperature to be reduced when the aluminium die casting demoulding to the decomposition of releasing agent, reduce the consumption of releasing agent, can be high temperature resistant, and decrease residual.
In order to achieve the above object, the invention provides efficient, harmless, the precise forming demoulding additive of a kind of die casting, this additive is the modified silicon oil after 12 alkene and phenylethene modified Methyl Hydrogen Polysiloxane Fluid, and its concrete structure is as follows:
Wherein, X=5000-6000; Y=80-90.
Efficient, harmless, the precise forming demoulding additive of above-mentioned die casting, wherein, described additive is the containing hydrogen silicone oil of employing 25 ~ 30 parts, 12 alkene of 70 ~ 75 parts, and the platinum complex compound of the styrene of 5 parts and 0.1 part, condensation obtains at high temperature under high pressure.
Efficient, harmless, the precise forming demoulding additive of above-mentioned die casting, wherein, described HTHP refers to 250-270 DEG C, and pressure is 5-10MPa.
Present invention also offers a kind of above-mentioned die casting preparation method that is efficient, harmless, precise forming demoulding additive, described additive is by the following raw material counted by weight:
Containing hydrogen silicone oil 25 ~ 30 parts;
12 70 ~ 75 parts, alkene;
Styrene 5 parts;
0.1 part, platinum complex compound;
Be 250-270 DEG C in reaction temperature, reaction pressure is under 5-10MPa, within condensation reaction 4-7 hour, obtains.
Present invention also offers a kind of above-mentioned die casting purposes that is efficient, harmless, precise forming demoulding additive, the releasing agent of stripping result and high-temperature resistant result is strengthened when it is for improving aluminium alloy compression casting, and when silicon rubber is produced as the interior demoulding and resistant to elevated temperatures additive.
Above-mentioned die casting purposes that is efficient, harmless, precise forming demoulding additive, wherein, the preparation method of described releasing agent is: the described additive getting 20%-25% by releasing agent overall weight percent, other additives 5% that the water of 70-75% and releasing agent are commonly used, releasing agent preparation method obtains releasing agent routinely.
The structure of described Methyl Hydrogen Polysiloxane Fluid (i.e. containing hydrogen silicone oil) is:
Owing to containing the more active Si-H key of some in molecule, easily there is cross-linking reaction, under the catalysis of Pt catalyst, the crosslinking agent of add-on type liquid silicon rubber can be made in this containing hydrogen silicone oil.Hydrophobic film can be formed on the surface of various material under metallic salt, catalysis, at a lower temperature.Si-H key easy fracture in the basic conditions.Concrete reaction is as follows:
Organosilyl backbone is play lubrication at aluminium Die Casting Industry, and there is certain heat endurance, side chain connecting 12 alkene is promote greasy property further, i.e. release property (general similar silicone oil select be 6 alkene or 8 alkene), the styryl structures (styrene of preferred 2-3 carbon) that gets on of grafting can the resistance to elevated temperatures of significantly improving product.
Owing to containing a large amount of polymerization inhibitors inside styrene, it is very difficult that actual styrene connects side chain.The present invention is through validation trial, finally obtains suitable reaction condition, can styryl structures and 12 alkene be grafted on containing hydrogen silicone oil simultaneously.The present invention has a process to be remove the inhibition composition of the inside when producing, i.e. pressurized conditions, does not have compressive reaction in normal building-up process, and compressive reaction is the key removing cinnamic inhibition composition.Polymerization technique just because of us controls proper, and the active ingredient of silicone oil is higher, and the consumption of our product can than existing addition few about 20% commercially.
Releasing agent additive provided by the invention, through 12 alkene and cinnamic modification, as the additive of releasing agent, under equal demoulding condition, the use of this additive can reduce by the consumption of 20%; Cost reduces 30% than the product cost of import grade; Strengthen the releasing agent of stripping result and high-temperature resistant result when can be used for improving aluminium alloy compression casting, and when silicon rubber is produced as the interior demoulding and resistant to elevated temperatures additive, there are very large market prospects.
Detailed description of the invention
Die casting of the present invention with efficient, harmless, precise forming demoulding additive by the following raw material counted by weight:
Containing hydrogen silicone oil 25 ~ 30 parts;
12 70 ~ 75 parts, alkene;
Styrene 5 parts;
0.1 part, platinum complex compound
Under HTHP (250-270 DEG C, pressure is 5-10MPa), within condensation reaction 4-7 hour, obtain.
12 described alkene molecular formula are: C12H24; Molecular weight: 168.32; No. CAS: 112-41-4.
Below in conjunction with embodiment, technical scheme of the present invention is described further.
Embodiment 1
Get the following raw material counted by weight: containing hydrogen silicone oil 25 parts, 12 70 parts, alkene, styrene 5 parts, 0.1 part, platinum complex compound, is placed in autoclave, and in 250-270 DEG C, pressure is under 5-10MPa condition, reacts 4 hours, obtains the modified silicon oil of target.This modified silicon oil is qualitative through chromatograph-mass spectrometer.
Embodiment 2
Get the following raw material counted by weight: containing hydrogen silicone oil 28 parts, 12 75 parts, alkene, styrene 5 parts, 0.1 part, platinum complex compound, is placed in autoclave, and in 250-270 DEG C, pressure is under 5-10MPa condition, reacts 7 hours, obtains the modified silicon oil of target.This modified silicon oil is qualitative through chromatograph-mass spectrometer.
Embodiment 3
Get the following raw material counted by weight: containing hydrogen silicone oil 30 parts, 12 72 parts, alkene, styrene 5 parts, 0.1 part, platinum complex compound, is placed in autoclave, and in 250-270 DEG C, pressure is under 5-10MPa condition, reacts 6 hours, obtains the modified silicon oil of target.This modified silicon oil is qualitative through chromatograph-mass spectrometer.
The modified silicon oil that the present invention is synthesized mainly on be available to the main raw material of manufacturer as releasing agent of releasing agent, to prepare end product, i.e. releasing agent.
Embodiment 4
The silicone oil that embodiment 1 obtains gets 20% by end product overall weight percent, other additives 5% that water 75% and releasing agent are commonly used, and releasing agent preparation method obtains releasing agent routinely.
The effect of assessment releasing agent, mainly one is turned over the comparison on mould number of times: user's every die casting one secondary aluminium, and temperature, probably at 300 ~ 400 degree, can spray a releasing agent.The releasing agent continuous operation that the present embodiment obtains 3 months, does not need the polishing carrying out mould.
Comparative example 1
Get the modified silicon oil for releasing agent additive conventional on market, get 35% by end product overall weight percent, other additives 5% that water 60% and releasing agent are commonly used, releasing agent preparation method obtains releasing agent routinely.
The releasing agent that this comparative example obtains is in continuous operation after 1 month, and mould just must be polished once.
Relatively above-described embodiment 4 is visible with comparative example 1, and the releasing agent utilizing modified silicon oil of the present invention to prepare can reduce the injury to mould, improves the mold use life-span.And the addition of modified silicon oil of the present invention is less, just can reach better stripping result, can reach the object reduced costs.Under equal demoulding condition, the use of this additive can reduce by the consumption of 20%; Cost reduces 30% than the product cost of import grade.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (6)
1. a die casting shaping and demoulding additive, is characterized in that, this additive is the modified silicon oil after 12 alkene and phenylethene modified Methyl Hydrogen Polysiloxane Fluid, and concrete structure is as follows:
Wherein, X=5000-6000; Y=80-90.
2. die casting shaping and demoulding additive as claimed in claim 1, it is characterized in that, described additive is the Methyl Hydrogen Polysiloxane Fluid of employing 25 ~ 30 weight portion, 12 alkene of 70 ~ 75 weight portions, the styrene of 5 weight portions and the platinum complex compound of 0.1 weight portion, condensation obtains at high temperature under high pressure.
3. die casting shaping and demoulding additive as claimed in claim 2, it is characterized in that, described HTHP refers to 250-270 DEG C, and pressure is 5-10MPa.
4. a preparation method for die casting shaping and demoulding additive as claimed in claim 1, is characterized in that, described additive is by the following raw material counted by weight:
Methyl Hydrogen Polysiloxane Fluid 25 ~ 30 parts;
12 70 ~ 75 parts, alkene;
Styrene 5 parts;
0.1 part, platinum complex compound;
Be 250-270 DEG C in reaction temperature, reaction pressure is under 5-10MPa, within condensation reaction 4-7 hour, obtains.
5. the purposes of a die casting shaping and demoulding additive as claimed in claim 1, it is characterized in that, the releasing agent of stripping result and high-temperature resistant result is strengthened when described die casting shaping and demoulding additive is for improving aluminium alloy compression casting, and when silicon rubber is produced as the interior demoulding and resistant to elevated temperatures additive.
6. the die casting as claimed in claim 5 purposes of shaping and demoulding additive, it is characterized in that, the preparation method of described releasing agent is: the described additive getting 20%-25% by releasing agent overall weight percent, other additives 5% that the water of 70-75% and releasing agent are commonly used, releasing agent preparation method obtains releasing agent routinely.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310205385.0A CN103331411B (en) | 2013-05-29 | 2013-05-29 | Efficient, lossless, precision molding demoulding addictive for pressure casting and preparation method thereof |
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| CN201310205385.0A CN103331411B (en) | 2013-05-29 | 2013-05-29 | Efficient, lossless, precision molding demoulding addictive for pressure casting and preparation method thereof |
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| CN103331411A CN103331411A (en) | 2013-10-02 |
| CN103331411B true CN103331411B (en) | 2015-05-20 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2525420A (en) * | 2014-04-24 | 2015-10-28 | Henkel Ag & Co Kgaa | New modified silicone oil for low temperature cure die casting lubricants |
| CN110358093A (en) * | 2018-04-11 | 2019-10-22 | 苏州润特新材料科技有限公司 | A kind of preparation method of high temperature resistant alkylaryl silicone oil |
| CN111633885A (en) * | 2020-06-12 | 2020-09-08 | 欧士曼(台州)高分子科技有限公司 | High-temperature-resistant rubber mold release agent and preparation method thereof |
| CN112574417A (en) * | 2020-11-27 | 2021-03-30 | 山东大易化工有限公司 | Preparation method of release agent suitable for medium-high temperature metal die casting |
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| EP0550028A1 (en) * | 1991-12-26 | 1993-07-07 | Dow Corning Toray Silicone Company, Limited | Mold-release agent composition for aluminum die-casting |
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| CN1656173A (en) * | 2002-04-12 | 2005-08-17 | 罗狄亚化学公司 | Siloxane composition not releasing hydrogen for the moulding/demoulding of tyres |
| CN1813022A (en) * | 2003-06-30 | 2006-08-02 | 罗迪亚公司 | Microparticle containing silicone release coatings having improved anti-block and release properties |
| CN101402734A (en) * | 2008-11-11 | 2009-04-08 | 宁波润禾化学工业有限公司 | Process for producing long-chain alkyl-phenyl modified silicone oil |
| CN102532551A (en) * | 2011-12-09 | 2012-07-04 | 宁波经济技术开发区希科新材料有限公司 | Preparation method of monocarboxyl modified silicone oil |
| CN102585233A (en) * | 2010-12-17 | 2012-07-18 | 日华化学株式会社 | Organo-modified silicone, mold release agent for metal mold casting comprising the same, and metal mold casting method using the same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0379311A (en) * | 1989-08-23 | 1991-04-04 | Tonen Chem Corp | Mold release agent composition |
| JP2621755B2 (en) * | 1993-03-31 | 1997-06-18 | 東レ株式会社 | Method for producing epoxy resin composition |
| JPH10244546A (en) * | 1997-03-05 | 1998-09-14 | Nok Corp | Mold release agent |
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- 2013-05-29 CN CN201310205385.0A patent/CN103331411B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0550028A1 (en) * | 1991-12-26 | 1993-07-07 | Dow Corning Toray Silicone Company, Limited | Mold-release agent composition for aluminum die-casting |
| US6635606B2 (en) * | 2000-03-17 | 2003-10-21 | Nicca Chemical Co., Ltd. | Release agents for die casting |
| CN1646590A (en) * | 2002-04-10 | 2005-07-27 | 三洋化成工业株式会社 | Polyurethane resin based slush molding material |
| CN1656173A (en) * | 2002-04-12 | 2005-08-17 | 罗狄亚化学公司 | Siloxane composition not releasing hydrogen for the moulding/demoulding of tyres |
| CN1813022A (en) * | 2003-06-30 | 2006-08-02 | 罗迪亚公司 | Microparticle containing silicone release coatings having improved anti-block and release properties |
| CN101402734A (en) * | 2008-11-11 | 2009-04-08 | 宁波润禾化学工业有限公司 | Process for producing long-chain alkyl-phenyl modified silicone oil |
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