CN108555229A - A kind of heat-resistance type self-healing coatings for casting mould - Google Patents
A kind of heat-resistance type self-healing coatings for casting mould Download PDFInfo
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- CN108555229A CN108555229A CN201711346141.9A CN201711346141A CN108555229A CN 108555229 A CN108555229 A CN 108555229A CN 201711346141 A CN201711346141 A CN 201711346141A CN 108555229 A CN108555229 A CN 108555229A
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- casting mould
- heat
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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
Abstract
The present invention provides a kind of heat-resistance type self-healing coatings for casting mould, and constituent includes vector resin, admixture, polyvinyl alcohol, auxiliary agent；Vector resin includes linseed oil water soluble alkyd resin, polyester imine resin, organic siliconresin；Admixture includes composite fibre powder, ceramic powders, aerosil；Auxiliary agent includes the acidic aqueous solution of ethyl orthosilicate, repairs liquid, activating solution, nucleating agent.The present invention has outstanding temperature tolerance and wearability, when in use, can form one layer of smooth, continuous and smooth paint film in die surface, while changing coating film to have the function of certain recovery, contribute to the use for reducing coating, reduce casting cost；And component provided by the invention simply easily obtains, and moderate cost, is suitable for major medium-sized and small enterprises and promotes the use of, has a vast market foreground.
Description
Technical field
The invention belongs to casting technology fields, and in particular to a kind of heat-resistance type self-healing coatings for casting mould.
Background technology
Casting mould coating is to play buffer action among casting and casting mold, achievees the purpose that Sand sticking-resistant.In recent years,
With the rapid development of new and high technology, when casting it is raw materials used type it is also more and more, therefore to the resistance to of casting mould coating
Warm nature require it is also higher and higher, existing die lubricant improve it is durothermic other performances all have certain reduction simultaneously,
It is difficult to ensure casting quality.Meanwhile be directed to high-end casting at present, casting mould coating also casting toward high cost, high quality direction
Development；After carrying out primary complete casting mold, brushing casting mould coating again is needed, the raising of casting cost is caused.
Therefore, develop that one kind can aid in temperature tolerance and other properties are outstanding for above ask, and energy
The enough casting mould coating that casting cost is reduced while ensureing mold quality is that those skilled in the art are badly in need of solving
Problem.
Invention content
To solve the above problems, the invention discloses a kind of heat-resistance type self-healing coatings for casting mould.
In order to achieve the above object, the present invention provides the following technical solutions：
A kind of heat-resistance type self-healing coatings for casting mould, mass percent difference shared by constituent and each ingredient
For：Vector resin：52~70%, admixture：17~22%, polyvinyl alcohol：7~15%, auxiliary agent：6~15%；The composition of vector resin
The percentage that ingredient and each ingredient account for vector resin gross mass is respectively：Linseed oil water soluble alkyd resin：33~45%, gather
Ester imide resin：37~45%, organic siliconresin：15~30%；It is total that the constituent of admixture and each ingredient account for blended powder
The percentage of quality is respectively：Composite fibre powder：40~55%, ceramic powders：40~52%, aerosil：5~
10%；The percentage that the constituent of auxiliary agent and each ingredient account for auxiliary agent gross mass is respectively：The acidity of ethyl orthosilicate is water-soluble
Liquid：20~33%, liquid is repaired：15~33%, activating solution：15~33%, nucleating agent：14~20%.
Further, composite fibre powder by silicate fiber powder and carbon fiber powder according to mass ratio 3~7:1 mixing
It forms.
Further, repair liquid constituent and each ingredient account for repair liquid gross mass percentage be respectively：Mineral
Oil：60~75%, repairing activity agent：15~25%, nano-sized carbon：10~20%.
Further, repairing activity agent is the chain compound containing siloxanes or the concatenation containing succimide
Close any one in object.
Further, activating solution is colloidal pd activation solution.
Further, the granularity of admixture is not higher than 30 μm.
The present invention provides a kind of heat-resistance type self-healing coatings for casting mould, by vector resin, admixture, poly- second
Enol and auxiliary agent composition.Vector resin is by linseed oil water soluble alkyd resin, polyester imine resin and organic siliconresin group
At wherein polyester imine resin itself has outstanding mechanical performance, heat-resisting quantity and wearability, cooperation linseed oil water-soluble
Alkyd resin and organic siliconresin can ensure as coating vehicles the temperature tolerance of vector resin entirety, wearability and other
Properties.Admixture is made of composite fibre powder, ceramic powders and aerosil, wherein composite fibre powder
It being made of silicate powder and carbon fiber powder, silicate fiber temperature tolerance is good, and temperature in use can reach 800 DEG C or more,
Carbon fiber axial strength and modulus are high, density is low, it is higher than performance, without creep, superhigh temperature resistant under non-oxidizing atmosphere, fatigue durability
Good, coefficient of thermal expansion is small, not only light after mixing molding with silicate fiber, and mechanical performance is excellent, and its high temperature resistant is resistance to
When it is strong to wait performance, then mixing as admixture with ceramic powders and aerosil, ensure the wear-resisting of admixture entirety
And temperature tolerance.Auxiliary agent is made of the acidic aqueous solution of ethyl orthosilicate, reparation liquid, activating solution and nucleating agent, can be directed to
Vector resin be effectively modified, while improving whole heat-resistant, wear-resistant effect so that the present invention integrally has certain
Prosthetic can be automatic to a certain extent when certain abrasion or cracking occur for coating surface disclosed in this invention
It restores, restores its wear-resisting and heat resistance.
Compared with prior art, the present invention when in use can be in mold table with outstanding temperature tolerance and wearability
Face forms one layer of smooth, continuous and smooth paint film, while changing coating film and have the function of certain recovery, contributes to
The use of coating is reduced, casting cost is reduced；And component provided by the invention simply easily obtains, and moderate cost, is suitable for
Major medium-sized and small enterprises promote the use of, and have a vast market foreground.
Specific implementation mode
Technical solution provided by the invention is described in detail below with reference to specific embodiment, it should be understood that following specific
Embodiment is only illustrative of the invention and is not intended to limit the scope of the invention.
Embodiment 1：
A kind of heat-resistance type self-healing coatings for casting mould, mass percent difference shared by constituent and each ingredient
For：Vector resin：52%, admixture：22%, polyvinyl alcohol：13%, auxiliary agent：13%；The constituent of vector resin and each ingredient
The percentage for accounting for vector resin gross mass is respectively：Linseed oil water soluble alkyd resin：33%, polyester imine resin：45%, organic
Silicones：22%；The percentage that the constituent of admixture and each ingredient account for blended powder gross mass is respectively：Composite fibre
Powder：40%, ceramic powders：52%, aerosil：8%, and the granularity of admixture is 28 μm, composite fibre powder is by silicon
Silicate fiber powder is with carbon fiber powder according to mass ratio 3:1 mixes；The constituent of auxiliary agent and each ingredient account for auxiliary agent
The percentage of gross mass is respectively：The acidic aqueous solution of ethyl orthosilicate：20%, liquid is repaired：33%, activating solution：33%, nucleating agent：
14%；Repair liquid constituent and each ingredient account for repair liquid gross mass percentage be respectively：Mineral oil：60%, it repairs and lives
Property agent：25%, nano-sized carbon：15%, wherein repairing activity agent is the chain compound containing siloxanes；Activating solution activates for colloid palladium
Liquid.
Embodiment 2：
A kind of heat-resistance type self-healing coatings for casting mould, mass percent difference shared by constituent and each ingredient
For：Vector resin：70%, admixture：17%, polyvinyl alcohol：7%, auxiliary agent：6%；The constituent of vector resin and each ingredient account for
The percentage of vector resin gross mass is respectively：Linseed oil water soluble alkyd resin：45%, polyester imine resin：37%, organosilicon
Resin：18%；The percentage that the constituent of admixture and each ingredient account for blended powder gross mass is respectively：Composite fibre powder
End：55%, ceramic powders：40%, aerosil：5%, and the granularity of admixture is 20 μm, composite fibre powder is by silicic acid
Salt fiber dust is with carbon fiber powder according to mass ratio 7:1 mixes；It is total that the constituent of auxiliary agent and each ingredient account for auxiliary agent
The percentage of quality is respectively：The acidic aqueous solution of ethyl orthosilicate：33%, liquid is repaired：25%, activating solution：25%, nucleating agent：
17%；Repair liquid constituent and each ingredient account for repair liquid gross mass percentage be respectively：Mineral oil：75%, it repairs and lives
Property agent：15%, nano-sized carbon：10%, wherein repairing activity agent is the chain compound containing succimide；Activating solution is colloid palladium
Activating solution.
Embodiment 3：
A kind of heat-resistance type self-healing coatings for casting mould, mass percent difference shared by constituent and each ingredient
For：Vector resin：60%, admixture：19%, polyvinyl alcohol：11%, auxiliary agent：10%；The constituent of vector resin and each ingredient
The percentage for accounting for vector resin gross mass is respectively：Linseed oil water soluble alkyd resin：39%, polyester imine resin：40%, organic
Silicones：21%；The percentage that the constituent of admixture and each ingredient account for blended powder gross mass is respectively：Composite fibre
Powder：47%, ceramic powders：46%, aerosil：7%, and the granularity of admixture is 25 μm, composite fibre powder is by silicon
Silicate fiber powder is with carbon fiber powder according to mass ratio 5:1 mixes；The constituent of auxiliary agent and each ingredient account for auxiliary agent
The percentage of gross mass is respectively：The acidic aqueous solution of ethyl orthosilicate：26%, liquid is repaired：29%, activating solution：25%, nucleating agent：
20%；Repair liquid constituent and each ingredient account for repair liquid gross mass percentage be respectively：Mineral oil：66%, it repairs and lives
Property agent：20%, nano-sized carbon：14%, wherein repairing activity agent is the chain compound containing siloxanes；Activating solution activates for colloid palladium
Liquid.
Casting mould coating is obtained respectively by the component provided in above 3 embodiments, and above 3 embodiments are obtained
Casting mould coating proceed by high temperature and abrasion test by 400 DEG C, and heat up 25 DEG C, above 3 every 5min
Embodiment acquisition casting mould coating is not cracking between 400~625 DEG C, and coating surface remains more flat
Whole and smooth state.
When temperature rises to 650 DEG C, the casting mould coating surface that embodiment 1,3 obtains still keeps flat smooth, and real
Apparent cracking occurs for the casting mould coating for applying the acquisition of example 2, but is gradually restored in 2min.
When temperature rises to 700 DEG C, the casting mould coating surface that embodiment 1 obtains cracks, but there is no occur
It restores；And the casting mould coating surface cracking that embodiment 2 obtains is more serious, and recovery is more slow, restores and stops after 5min
Only, and crackle return rate is about 62%；Embodiment 3 obtain casting mould coating surface still keep it is good smooth and
It is smooth.
When temperature rises to 750 DEG C, the casting mould coating surface cracking aggravation that embodiment 2 obtains, and no longer restore；And it is real
Although moderate cracking occurs for the casting mould coating for applying the acquisition of example 3, restored completely after 1min40s.
When temperature rises to 800 DEG C, embodiment 3 obtains the face checking aggravation of casting mould coating, and no longer restores.
To sum up, embodiment 1,2,3 all has good heatproof and wearability, and embodiment 1 exists compared with existing coating
It is better than embodiment 2 on heat-resistant, wear-resistant, but the restoration of embodiment 2 is better than embodiment 1, embodiment 3 is with outstanding heatproof
While wearability, also there is extremely outstanding restoration；Therefore the die lubricant that the component provided through the invention obtains is complete
Face is better than current existing die lubricant, and embodiment 3 is most preferred embodiment.
Finally, it should be noted that property technical side the above examples are only used to illustrate the technical scheme of the present invention and are not limiting
Case, it will be understood by those of ordinary skill in the art that, those are modified or replaced equivalently technical scheme of the present invention, and
The objective and range for not departing from the technical program, are intended to be within the scope of the claims of the invention.
Claims (6)
1. a kind of heat-resistance type self-healing coatings for casting mould, it is characterised in that：Shared by its constituent and each ingredient
Mass percent is respectively：Vector resin：52~70%, admixture：17~22%, polyvinyl alcohol：7~15%, auxiliary agent：6~15%；
The percentage that the constituent of the vector resin and each ingredient account for vector resin gross mass is respectively：Linseed oil water-soluble alcohol
Acid resin：33~45%, polyester imine resin：37~45%, organic siliconresin：15~30%；The constituent of the admixture with
And each ingredient accounts for the percentage of blended powder gross mass and is respectively：Composite fibre powder：40~55%, ceramic powders：40~52%,
Aerosil：5~10%；The percentage that the constituent of the auxiliary agent and each ingredient account for auxiliary agent gross mass is respectively：
The acidic aqueous solution of ethyl orthosilicate：20~33%, liquid is repaired：15~33%, activating solution：15~33%, nucleating agent：14~20%.
2. a kind of heat-resistance type self-healing coatings for casting mould according to claim 1, it is characterised in that：It is described multiple
Condensating fiber powder is by silicate fiber powder and carbon fiber powder according to mass ratio 3~7:1 mixes.
3. a kind of heat-resistance type self-healing coatings for casting mould according to claim 1, it is characterised in that：It is described to repair
The constituent of multiple liquid and each ingredient, which account for, to be repaired the percentage of liquid gross mass and is respectively：Mineral oil：60~75%, repairing activity
Agent：15~25%, nano-sized carbon：10~20%.
4. a kind of heat-resistance type self-healing coatings for casting mould according to claim 3, it is characterised in that：It is described to repair
Active dose is any one in the chain compound containing siloxanes or the chain compound containing succimide.
5. a kind of heat-resistance type self-healing coatings for casting mould according to claim 1, it is characterised in that：The work
Change liquid is colloidal pd activation solution.
6. a kind of heat-resistance type self-healing coatings for casting mould according to claim 1, it is characterised in that：It is described to mix
The granularity for closing material is not higher than 30 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711346141.9A CN108555229A (en) | 2017-12-15 | 2017-12-15 | A kind of heat-resistance type self-healing coatings for casting mould |
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| CN201711346141.9A CN108555229A (en) | 2017-12-15 | 2017-12-15 | A kind of heat-resistance type self-healing coatings for casting mould |
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| CN108555229A true CN108555229A (en) | 2018-09-21 |
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| CN201711346141.9A Pending CN108555229A (en) | 2017-12-15 | 2017-12-15 | A kind of heat-resistance type self-healing coatings for casting mould |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110961571A (en) * | 2020-01-07 | 2020-04-07 | 大连远景铸造有限公司 | Casting surface air-tight hole technology |
Citations (5)
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|---|---|---|---|---|
| KR100957986B1 (en) * | 2007-12-27 | 2010-05-17 | 주식회사 포스코 | Steel Sheet Having Coating Containing Self Healing Microcapsule Encapsulating Inorganic Compound and Coating Composition Comprising the Micro Capsule |
| US20110251335A1 (en) * | 2010-04-09 | 2011-10-13 | Basf Se | Coatings repairable by introduction of energy |
| CN103113717A (en) * | 2013-03-01 | 2013-05-22 | 华东交通大学 | Preparation method of ceramic pipe network carrier in damage self-restoration of resin-base composite material |
| CN106085213A (en) * | 2016-05-31 | 2016-11-09 | 安徽开林新材料股份有限公司 | A kind of processing technology of steel surface renovation agent |
| CN106085238A (en) * | 2016-05-31 | 2016-11-09 | 安徽开林新材料股份有限公司 | A kind of steel surface processing agent with self-repair function |
-
2017
- 2017-12-15 CN CN201711346141.9A patent/CN108555229A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100957986B1 (en) * | 2007-12-27 | 2010-05-17 | 주식회사 포스코 | Steel Sheet Having Coating Containing Self Healing Microcapsule Encapsulating Inorganic Compound and Coating Composition Comprising the Micro Capsule |
| US20110251335A1 (en) * | 2010-04-09 | 2011-10-13 | Basf Se | Coatings repairable by introduction of energy |
| CN103113717A (en) * | 2013-03-01 | 2013-05-22 | 华东交通大学 | Preparation method of ceramic pipe network carrier in damage self-restoration of resin-base composite material |
| CN106085213A (en) * | 2016-05-31 | 2016-11-09 | 安徽开林新材料股份有限公司 | A kind of processing technology of steel surface renovation agent |
| CN106085238A (en) * | 2016-05-31 | 2016-11-09 | 安徽开林新材料股份有限公司 | A kind of steel surface processing agent with self-repair function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110961571A (en) * | 2020-01-07 | 2020-04-07 | 大连远景铸造有限公司 | Casting surface air-tight hole technology |
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Application publication date: 20180921 |