CN105200367A - Vacuum impregnation nano hole sealing agent with high permeability as well as preparation method and application thereof - Google Patents

Vacuum impregnation nano hole sealing agent with high permeability as well as preparation method and application thereof Download PDF

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CN105200367A
CN105200367A CN201410310384.7A CN201410310384A CN105200367A CN 105200367 A CN105200367 A CN 105200367A CN 201410310384 A CN201410310384 A CN 201410310384A CN 105200367 A CN105200367 A CN 105200367A
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hole sealing
sealing agent
vacuum impregnation
nano hole
hypertonicity
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CN201410310384.7A
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CN105200367B (en
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檀四华
向汝明
其他发明人请求不公开姓名
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Huizhou Huayu Industrial Co Ltd
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Huizhou Huayu Industrial Co Ltd
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Abstract

The invention discloses a vacuum impregnation nano hole sealing agent with high permeability as well as a preparation method and application thereof. The vacuum impregnation nano hole sealing agent is composed of the following raw materials: silicon carbide, silicon dioxide, an auxiliary and a solvent, wherein the mass ratio of the silicon carbide to the silicon dioxide to the auxiliary to the solvent is (1%-5%):(5%-15%):(0.1%-3%):(65%-95%). The invention further discloses a preparation method for the vacuum impregnation nano hole sealing agent, and application of the vacuum impregnation nano hole sealing agent to precision workpieces of iron series, aluminum series, copper series and alloy series. The vacuum impregnation nano hole sealing agent with high permeability, provided by the invention, can form chemical crosslinking with iron, aluminum, zinc, magnesium and other metals to generate strong chemical bonding, and has the follows advantages: (1), compared with a common hole sealing agent, the vacuum impregnation nano hole sealing agent disclosed by the invention has better permeability and the particle size is smaller than 50nm; (2), compared with a common hole sealing agent, the vacuum impregnation nano hole sealing agent disclosed by the invention has better high temperature resistance; (3), compared with a common hole sealing agent, the vacuum impregnation nano hole sealing agent disclosed by the invention further has the advantages of low viscosity and high abrasion resistance.

Description

A kind of vacuum impregnation nano hole sealing agent with hypertonicity and its production and use
Technical field
The present invention relates to vacuum impregnation nano hole sealing agent technical field, particularly relate to a kind of vacuum impregnation nano hole sealing agent with hypertonicity and its production and use.
Background technology
Concerning a lot of hot spray coating, sealing of hole is a necessary last handling process.When coating faces corrosion and oxidation (being sometimes in high temperature) environment, sealing of hole is the content that coated designs is necessarily considered.
First releases seriation hole sealing agent product to market is in the world METCO company of the U.S. (existing SULZERMETCO), the existing considerable scale of its hole sealing agent series, and successfully use for many years, its important several hole sealing agents have: dry air type glyceryl ester resin, dry air type resol, aluminium ethenoid resin, baking-type resol and sial resin etc., wherein, although first four kinds have good chemical stability, but its working temperature is all at about 200 DEG C, the hole-sealing technology under hot environment cannot be applied to, although and sial resin working temperature can reach 480 DEG C, but it is low to there is fastness to rubbing, the problem of poor permeability.
Except above problem, general resin cannot penetrate into small hole, and the assembly for some precisions is helpless, also there is significant limitation.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art part and provide a kind of with hypertonicity, high-wearing feature, high temperature tolerance, the agent of low viscous vacuum impregnation nano hole sealing, solve traditional hole sealing agent poor permeability, wear resistance is low, non-refractory, viscosity are a high difficult problem, thus realize for intact the sealing of precision components inner void.
For achieving the above object, the technical scheme that the present invention takes is: a kind of vacuum impregnation nano hole sealing agent with hypertonicity, is made up of the raw material of following quality proportioning:
Silicon carbide: silicon-dioxide: auxiliary agent: solvent=1% ~ 5%:5% ~ 15%:0.1% ~ 3%:65% ~ 95%.
As the preferred implementation with the vacuum impregnation nano hole sealing agent of hypertonicity of the present invention, the agent of described vacuum impregnation nano hole sealing is made up of the raw material of following quality proportioning:
Silicon carbide: silicon-dioxide: auxiliary agent: solvent=3.45%:11.25%:0.3%:85%.
As the preferred implementation with the vacuum impregnation nano hole sealing agent of hypertonicity of the present invention, described auxiliary agent comprises thickening material and film coalescence aid.
As the preferred implementation with the vacuum impregnation nano hole sealing agent of hypertonicity of the present invention, described thickening material is urethane, and described film coalescence aid is at least one in dipropylene glycol methyl ether, dipropylene, C3-Fluoroalcohol.
As the preferred implementation with the vacuum impregnation nano hole sealing agent of hypertonicity of the present invention, described solvent is at least one in C3-Fluoroalcohol or Virahol.
Secondly, the present invention also provides a kind of preparation method with the vacuum impregnation nano hole sealing agent of hypertonicity, said method comprising the steps of:
(1) be silicon carbide according to quality proportioning: silicon-dioxide: auxiliary agent: solvent=1% ~ 5%:5% ~ 15%:0.1% ~ 3%:65% ~ 95% takes the quality of each material respectively;
Or step (1) is for being silicon carbide according to quality proportioning: silicon-dioxide: auxiliary agent: solvent=3.45%:11.25%:0.3%:85% takes the quality of each material respectively;
(2) dispersing speed is adjusted to 300r/m ~ 500r/m, first slowly add silicon carbide and silicon-dioxide, add appropriate solvent again, to be unlikely to make the too high and inconvenient use of slurry viscosity, add film coalescence aid, the viscosity situation of most backsight entire slurry adds thickening material in right amount, obtains the slurry prepared;
(3) in baking box slurry described in step (2) being placed in 200 DEG C ~ 300 DEG C, namely low-temperature bake 10min ~ 30min obtains required hole sealing agent.
Finally, present invention also offers a kind of purposes of vacuum impregnation nano hole sealing agent on iron system, aluminium system, copper system and alloy system precision workpiece with hypertonicity.
Hole sealing agent of the present invention can infiltrate inside workpiece deep layer and reaches the object of sealing by mat capillary theory after vacuum impregnation processing treatment, improves resistance to air loss gas-tight and leaks seepage, strengthening mechanical cutting processibility, increases mechanical resistance Compressive Strength, improves machining tolerance dimensional accuracy, promotes accessory appearance texture and weather resistance.
There is organism on the one hand and form chemical bonded refractory in described hole sealing agent, there is inorganics on the other hand and produce bond, and therefore can form chemically crosslinked with the metal such as iron, aluminium, zinc, magnesium and produce strong chemical bonded refractory, be the most important fundamental requirement of excellent product quality.But not the resin hole sealing agent of the epoxy resin that generally impregnation sealing of hole factory is used or poorer first-class, this resinoid is a kind of polymer of macromolecule, top layer that can only be simple again for workpiece forms a kind of resin of cladding, the inside of workpiece cannot be penetrated into, therefore after workpiece sealing of hole, often during re-plating fraction defective high and also be used in high temperature height friction operating condition under be easy to electroplating film is peeled off, under salt spray resistance condition test, often do not reach perfect requirement yet.
Described hole sealing agent is nano level molecule (<50nm), there is hypertonicity, low-viscosity, even if small hole also can infiltrate, self can start when drying evaporation to be polymerized (polymerization), finally after liquid evaporation, form ceramic membrane and hole and hole interior surface are taken into account and sealed completely.
Range of application can be used in powder metallurgy spare part, the airtight assembly of Pneumatic hand tools, cylinder head, engine spare part, prime the fuel system, refrigerant condenser, power-operated system, rack and pinion cap, turbine engine spare part, switch-valve, menifold, setter, casinghead gas controller, oil pressure side Pu spare part, motor and electronics, military affairs equipment, space flight equipment unit etc.
The reaction mechanism of described hole sealing agent sealing of hole is as follows:
A, infiltration, as shown in Figure 3:
Hole sealing agent containing being impregnated in the gap of deep layer, the situation of hole sealing agent and workpiece internal layer [iron system, aluminium system, copper system, alloy system] existence respectively.
B, crosslinked and polymerization, as shown in Figure 4:
Hole sealing agent starts polymerization (polymerization) when drying evaporation and crosslinking reaction (corss-link) ceramic body is formed gradually.
C, sealing of hole, as shown in Figure 5:
There is strong chemically crosslinked in hole sealing agent and workpiece substrate [iron system, aluminium system, copper system, alloy system], and polyreaction itself, the ceramic body simultaneously formed and reach the usefulness of sealing of hole.
The vacuum impregnation nano hole sealing agent with hypertonicity provided by the invention, by changing formula rate, has the following advantages: (1), compared with general hole sealing agent, has better perviousness, particle <50nm; (2) compared with general hole sealing agent, there is better high-temperature stability, 600 DEG C; (3) compared with general hole sealing agent, also there is the advantage of low viscosity, high-wearing feature.
Accompanying drawing explanation
Fig. 1 is the SEM figure that vacuum impregnation nano hole sealing of the present invention agent is applied to before and after micro-arc oxidation workpiece disk sealing of hole.
Fig. 2 is the SEM figure of vacuum impregnation nano hole sealing agent embodiment 2 of the present invention.
Fig. 3 is the osmotic engine drawing of hole sealing agent sealing of hole of the present invention reaction.
Fig. 4 is the crosslinked of hole sealing agent sealing of hole of the present invention reaction and polymerization machine drawing.
Fig. 5 is the hole covering machine drawing of hole sealing agent sealing of hole of the present invention reaction.
Embodiment
For better the object, technical solutions and advantages of the present invention being described, below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
There is described in the present embodiment being made up of the raw material of following mass ratio of the vacuum impregnation nano hole sealing agent of hypertonicity:
Silicon carbide: silicon-dioxide: auxiliary agent: Virahol=1%:5%:0.1%:65%, wherein, the quality proportioning of auxiliary agent is urethane: C3-Fluoroalcohol=1:1.
The preparation technology of vacuum impregnation nano hole sealing agent described in the present embodiment, comprises the following steps:
(1) be silicon carbide according to quality proportioning: silicon-dioxide: urethane: C3-Fluoroalcohol: Virahol=1%:5%:0.05%:0.05%:65% takes the quality of each material respectively;
(2) dispersing speed is adjusted to 300r/m, first slowly adds silicon carbide and silicon-dioxide, then add appropriate Virahol, to be unlikely to make the too high and inconvenient use of slurry viscosity, add C3-Fluoroalcohol, the viscosity situation of most backsight entire slurry adds urethane in right amount, obtains the slurry prepared;
(3) in baking box slurry described in step (2) being placed in 200 DEG C, namely low-temperature bake 10min obtains required hole sealing agent.
Embodiment 2
There is described in the present embodiment being made up of the raw material of following mass ratio of the vacuum impregnation nano hole sealing agent of hypertonicity:
Silicon carbide: silicon-dioxide: auxiliary agent: Virahol=3.45%:11.25%:0.3%:85%, wherein, the quality proportioning of auxiliary agent is urethane: dipropylene=1:1.
The preparation technology of vacuum impregnation nano hole sealing agent described in the present embodiment, comprises the following steps:
(1) be silicon carbide according to quality proportioning: silicon-dioxide: urethane: dipropylene: Virahol=3.45%:11.25%:0.15%:0.15%:85% takes the quality of each material respectively;
(2) dispersing speed is adjusted to 400r/m, first slowly add silicon carbide and silicon-dioxide, add appropriate Virahol again, to be unlikely to make the too high and inconvenient use of slurry viscosity, add dipropylene, the viscosity situation of most backsight entire slurry adds urethane in right amount, obtains the slurry prepared;
(3) in baking box slurry described in step (2) being placed in 250 DEG C, namely low-temperature bake 20min obtains required hole sealing agent.
Fig. 2 is the SEM figure of the present embodiment, and therefrom can find out, nanometer particle size <50nm, even if in the face of small hole, vacuum impregnation nano hole sealing of the present invention agent also can be infiltrated, and reaches the effect sealing hole completely.
Embodiment 3
There is described in the present embodiment being made up of the raw material of following mass ratio of the vacuum impregnation nano hole sealing agent of hypertonicity:
Silicon carbide: silicon-dioxide: auxiliary agent: C3-Fluoroalcohol=5%:15%:3%:95%, wherein, the quality proportioning of auxiliary agent is urethane: dipropylene glycol methyl ether=1:1.
The preparation technology of vacuum impregnation nano hole sealing agent described in the present embodiment, comprises the following steps:
(1) be silicon carbide according to quality proportioning: silicon-dioxide: urethane: dipropylene glycol methyl ether: C3-Fluoroalcohol=5%:15%:1.5%:1.5%:95% takes the quality of each material respectively;
(2) dispersing speed is adjusted to 500r/m, first slowly add silicon carbide and silicon-dioxide, add appropriate C3-Fluoroalcohol again, to be unlikely to make the too high and inconvenient use of slurry viscosity, add dipropylene glycol methyl ether, the viscosity situation of most backsight entire slurry adds urethane in right amount, obtains the slurry prepared;
(3) in baking box slurry described in step (2) being placed in 300 DEG C, namely low-temperature bake 30min obtains required hole sealing agent.
Comparative example 1
This comparative example is the performance of the agent of vacuum impregnation nano hole sealing and general hole sealing agent in embodiment 1-3 carried out, shown in comparing result following table.Wherein, the raw material of general hole sealing agent consists of: nickel acetate: phenylformic acid: Sodium Benzoate: how to be sulfonate: silicone antifoam agent=75%:1%:1%:15%:0.5%.
Experimental example 2
Hole sealing agent in the present embodiment 2 is applied to micro-arc oxidation workpiece disk, as shown in Figure 1, upper left and upper right portion are before sealing of hole, the pattern of micro-arc oxidation workpiece disk, can see clearly, there is a lot of hole in workpiece disk, aperture is maximum reaches about 4 μm, most I reaches Nano grade, in embodiment 2, hole sealing agent is after vacuum impregnation art breading is on micro-arc oxidation workpiece disk, and as shown in Figure 1, bottom left section and lower right-most portion are the patterns after sealing of hole, seeing clearly, the hole of workpiece disk is sealed by intact.
Finally to should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although be explained in detail the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.

Claims (7)

1. there is a vacuum impregnation nano hole sealing agent for hypertonicity, be made up of the raw material of following quality proportioning: silicon carbide: silicon-dioxide: auxiliary agent: solvent=1% ~ 5%:5% ~ 15%:0.1% ~ 3%:65% ~ 95%.
2. have the vacuum impregnation nano hole sealing agent of hypertonicity according to claim 1, it is characterized in that, the agent of described vacuum impregnation nano hole sealing is made up of the raw material of following quality proportioning:
Silicon carbide: silicon-dioxide: auxiliary agent: solvent=3.45%:11.25%:0.3%:85%.
3. according to claim 1 or 2, have the vacuum impregnation nano hole sealing agent of hypertonicity, it is characterized in that, described auxiliary agent comprises thickening material and film coalescence aid.
4. have the vacuum impregnation nano hole sealing agent of hypertonicity according to claim 3, it is characterized in that, described thickening material is urethane, and described film coalescence aid is at least one in dipropylene glycol methyl ether, dipropylene, C3-Fluoroalcohol.
5. according to claim 1 or 2, have the vacuum impregnation nano hole sealing agent of hypertonicity, it is characterized in that, described solvent is at least one in C3-Fluoroalcohol or Virahol.
6. there is as described in as arbitrary in claim 1-5 a preparation method for the vacuum impregnation nano hole sealing agent of hypertonicity, it is characterized in that, said method comprising the steps of:
(1) be silicon carbide according to quality proportioning: silicon-dioxide: auxiliary agent: solvent=1% ~ 5%:5% ~ 15%:0.1% ~ 3%:65% ~ 95% takes the quality of each material respectively;
Or step (1) is for being silicon carbide according to quality proportioning: silicon-dioxide: auxiliary agent: solvent=3.45%:11.25%:0.3%:85% takes the quality of each material respectively;
(2) dispersing speed is adjusted to 300r/m ~ 500r/m, first slowly add silicon carbide and silicon-dioxide, add appropriate solution again, to be unlikely to make the too high and inconvenient use of slurry viscosity, add film coalescence aid, the viscosity situation of most backsight entire slurry adds thickening material in right amount, obtains the slurry prepared;
(3) in baking box slurry described in step (2) being placed in 200 DEG C ~ 300 DEG C, namely low-temperature bake 10min ~ 30min obtains required hole sealing agent.
7. one kind as arbitrary in claim 1-5 as described in there is the purposes of vacuum impregnation nano hole sealing agent on iron system, aluminium system, copper system and alloy system precision workpiece of hypertonicity.
CN201410310384.7A 2014-06-30 2014-06-30 A kind of vacuum impregnation nano hole sealing agent and its preparation method and application with high osmosis Active CN105200367B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114315246A (en) * 2021-12-29 2022-04-12 西南科技大学 Hole sealing agent with repairing function and application thereof

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CN102732131A (en) * 2012-07-23 2012-10-17 河北晨阳工贸集团有限公司 Paint in aqueous epoxy thick paste and preparation method thereof
CN103058712A (en) * 2013-01-10 2013-04-24 湖南南方搏云新材料有限责任公司 C/SiC composite coating applied to surface of low-density carbon/carbon composite material and preparation process thereof
CN103498179A (en) * 2013-10-22 2014-01-08 哈尔滨三泳金属表面技术有限公司 Aluminum or aluminum alloy surface oxide film and method for preparing same
CN103881496A (en) * 2014-03-18 2014-06-25 中国兵器工业集团第五三研究所 Transparent protective coat for concrete

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1878668A (en) * 2004-11-04 2006-12-13 Lg化学株式会社 Ultralight ceramic plate and method for manufacturing same
CN101949481A (en) * 2010-09-17 2011-01-19 西安超码科技有限公司 Method for preparing wound heat-insulating drum
CN102732131A (en) * 2012-07-23 2012-10-17 河北晨阳工贸集团有限公司 Paint in aqueous epoxy thick paste and preparation method thereof
CN103058712A (en) * 2013-01-10 2013-04-24 湖南南方搏云新材料有限责任公司 C/SiC composite coating applied to surface of low-density carbon/carbon composite material and preparation process thereof
CN103498179A (en) * 2013-10-22 2014-01-08 哈尔滨三泳金属表面技术有限公司 Aluminum or aluminum alloy surface oxide film and method for preparing same
CN103881496A (en) * 2014-03-18 2014-06-25 中国兵器工业集团第五三研究所 Transparent protective coat for concrete

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114315246A (en) * 2021-12-29 2022-04-12 西南科技大学 Hole sealing agent with repairing function and application thereof
CN114315246B (en) * 2021-12-29 2022-11-25 西南科技大学 Hole sealing agent with repairing function and application thereof

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