CN101955336A - Application of silicon carbide composite material - Google Patents
Application of silicon carbide composite material Download PDFInfo
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- CN101955336A CN101955336A CN2009101733386A CN200910173338A CN101955336A CN 101955336 A CN101955336 A CN 101955336A CN 2009101733386 A CN2009101733386 A CN 2009101733386A CN 200910173338 A CN200910173338 A CN 200910173338A CN 101955336 A CN101955336 A CN 101955336A
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Abstract
The invention particularly relates to a composite material used for repairing and protecting metal surfaces. The composite material comprises a filler material and an adhesive, wherein a silicon carbide filler material is used as a foundation, and epoxy resin is simultaneously used as the adhesive. By adding ceramic oxides with particularly fine particle sizes, the particle size of silicon carbide is at least partially enlarged at the same time and the abrasion resistance and the processability of the composite material are enhanced. Based on the fact that round and fine oxide particles can be filled into gaps among obviously larger silicon carbide particles, silicon carbide particles can mutually and favorably flow.
Description
The present invention relates to matrix material and be used to repair application with the protective money metal surface, described matrix material comprises packing material and tackiness agent, and silicon carbide is the necessary part of described packing material, and aluminum oxide and/or zirconium white are sneaked into wherein as oxide compound.This class matrix material if for example use, can significantly improve frictional strength and erosion resistance in liquid medium.Resistibility for most of different chemical actions from acid, alkali and other chemical also can be improved.Described matrix material both can be applied to the regeneration on wear metal surface, also can be used for the prevention protection.The matrix material that makes is applied on the pending surface can smear (spreadable) form, its age hardening on this surface (ageharden), thus reach the desired protection effect subsequently.
Matrix material is usually sold with the form of high viscosity repair material (repair mass), if desired, it can be mixed with stiffening agent to produce matrix material certainly.Be to improve wear resistance, but need the packing material that resistance to wears of high intrinsic energy.Wherein, confirmed that metal and alumina particle are suitable as packing material.So far, seldom use silicon carbide.
On the other hand, packing material content can not increase arbitrarily, needs tackiness agent in the material because packing material is embedded into.Tackiness agent is simultaneously as tackiness agent, so that matrix material is fixed on the pending surface, but in fact it to not contribution of tear strength.If the packing material too high levels, the workability of matrix material can because the application efficiency of matrix material may be lower, for example be used trowel (trowel) worse and worse.Epoxy or vinyl ester resin are often as tackiness agent.
The formulation of the repair material of the known production matrix material of prior art is made up of following material: bisphenol-A or bisphenol-f and epoxy chloropropane are as epoxy resin system, and the silicon carbide of granularity≤0.1mm.In order to realize sclerosis, repair material is mixed with amine hardener (aminic hardener) (as diethylenetriamine or Triethylenetetramine (TETA)).
From the prior art, the past has been carried out various experiments, and target is to improve the content of packing material.At the packing material of other effort that improve tear strength based on the increase of use granularity.Yet two kinds of approach all cause the obvious reduction of repair material workability and workability.
German patent DE 3931959C1 has described the polyurethane-base spread compositions, and it mainly is made up of silicon carbide and/or corundum, and sneaks into silicon-dioxide to improve workability.The sneaking into of silicon-dioxide make it can be applied in addition vertical surface on, and can not cause because flowing of bringing of the deadweight of institute's materials used, and so mobilely can form irregular top coat.This spread compositions is specified with metal parts and is used jointly, and this metal parts is subjected to high wearing and tearing when contact ceramic masses (for example clay, earth, concrete etc.).Yet, in this mode, fail to realize the optimization of packing material with respect to the ratio of tackiness agent and associated performance.
DE10057111C2 discloses the slip casting composition that is used for the insulated electro sub-element.The high heat conductivity of this slip casting composition is guaranteed effective discharge of the heat that produces in the printed conductor of this electronic component.Here the mixture that uses silicon carbide and aluminum oxide etc. is as packing material.Yet, repair and the protective money metal surface, and more particularly tear strength and the erosion resistance theme that be not this printed publication of raising in liquid medium.
Consider the above-mentioned prior art of mentioning, because the increase of packing material content and packing material granularity, thereby target is to provide the matrix material based on silicon carbide, it is characterized in that high tear strength and erosion resistance, and still keeps good material workability.
The present invention addresses this problem by using the matrix material of being made up of packing material and tackiness agent, silicon carbide is the necessary part in the packing material, aluminum oxide and/or zirconium white are sneaked into wherein as oxide compound, wherein the mean particle size of oxide compound is less than 50 μ m, and the mean particle size of the size ratio silicon carbide of oxide compound wants thin.
When having relatively sharp-pointed silicon-carbide particle structure, thicker when improving tear strength, oxide particle very thin, that justify is inserted the space between silicon-carbide particle, thereby improves tap density by this way.In use, the latter can be along the oxide particle slippage, so the smearing property of repair material is improved.Total viscosity of repair material reduces.
The preferred aluminum oxide that adopts is as ceramic oxide.The same with silicon carbide, aluminum oxide or corundum also have the very high characteristics of hardness.In the Mohs' hardness standard, aluminum oxide is classified as 9.0, and silicon carbide (9.5) even approaching adamantine hardness aspect hardness.Simultaneously, because aluminum oxide reaches very thin granularity easily, and these particles have circular configuration, so aluminum oxide is particularly suitable for.Aluminum oxide can be substituted by zirconium white.
Easily, can be with a certain amount of high dispersing SiO
2Sneak in the formulation.The SiO that is called Aerosil
2Be particularly suitable for.Aerosil sneaks into the tackiness that has improved repair material, the particularly tackiness on vertical surface.Simultaneously, this repair material can be used with thick-layer, and can't be caused it to flow and distortion.
For guaranteeing the effective slippage of silicon carbide along oxide particle, the mean particle size of the oxide compound of sneaking into should significantly be lower than the granularity of silicon carbide.Therefore, mean particle size is in the scope of≤50 μ m.The special preferred average particle size of mean particle size≤10 μ m.
Simultaneously, known compared to existing technology matrix material on purpose improves the granularity of silicon carbide, to improve tear strength.Therefore, the granularity of silicon carbide can be up to 3mm, and preferred value is not more than 1mm.
Advantageously, making packing material embedding and fixing composite material to the tackiness agent on pending surface is Resins, epoxy.What the typical case used is the aromatic epoxy resin system that utilizes amine hardener.
The preferred Triethylenetetramine (TETA) that uses is as stiffening agent.Compare with diethylenetriamine, less with the exothermic heat of reaction of Triethylenetetramine (TETA), thereby the speed of response reduction, the sclerosis of matrix material has less stress and strain.The quenching and age-hardening after 16 to 18 hours of such matrix material, but process of setting is roughly finished after 6 hours.
The mixture of typical bisphenol-A or bisphenol-f and epoxy chloropropane can be used as epoxy resin system.Past has confirmed that this epoxy resin system is reliably, and is widely accepted on market.
Yet,, also it is contemplated that and use vinyl ester resin as tackiness agent as the surrogate of Resins, epoxy.
The present invention also comprises the purposes of repair material, and it can be converted with suitable stiffening agent and obtain matrix material of the present invention.Valuably, under vacuum, prepare formulation, thereby in fact premixed repair material does not contain bubble.In addition, provide vacuum also to guarantee the removal of residual water-content.
Provide the embodiment for preparing repair material according to the present invention below.
Embodiment
The silicon carbide and the 1000g mean particle size that the 3000g particle diameter are not more than 1mm are the aluminum oxide pre-mixing of 4 μ m.Simultaneously, the epoxy resin system that 1000g is made up of bisphenol-f, bisphenol-A and epoxy chloropropane mixes with the silicon-dioxide (Aerosil) of 40g high dispersing, and places the mixing vessel that can be placed under the vacuum.Afterwards, sneak into premixed silicon carbide/aluminum oxide gradually.In this process, all materials are by thorough mixing.At last, the material that further thorough mixing has mixed under vacuum is about 10 minutes.Repair material can be packed into afterwards in storage vessel or the Sales Package.
Be to realize the age hardening of repair material, add the 140g Triethylenetetramine (TETA), and thorough mixing again.Afterwards, this material is applied on the pending surface.Therefore the total content of packing material can reach 78.5 weight %, and this has had significant increase for the content of packing material in the known exemplary complex material of prior art.
Claims (11)
1. matrix material is used for repairing and the protective money metal surface; more specifically be used for being increased in the tear strength in the liquid medium and the application of erosion resistance; described matrix material is made up of packing material and tackiness agent; silicon carbide is the necessary part of described packing material; aluminum oxide and/or zirconium white are sneaked into as oxide compound; the median size that it is characterized in that described oxide compound is less than 50 μ m, and the median size of the particle diameter ratio silicon carbide of described oxide compound is thin.
2. the application of the matrix material of claim 1, the silicon-dioxide that it is characterized in that high dispersing are the necessary parts of described matrix material.
3. the application of claim 1 or 2 matrix material, the median size that it is characterized in that described oxide compound is less than 10 μ m.
4. each the application of matrix material of aforementioned claim 1-3, the particle diameter that it is characterized in that described silicon carbide is less than 3mm.
5. each the application of matrix material of aforementioned claim 1-4 is characterized in that described tackiness agent is a Resins, epoxy.
6. the application of the matrix material of claim 5 is characterized in that using the aromatic epoxy resin system with amine hardener to produce Resins, epoxy.
7. the application of the matrix material of claim 6 is characterized in that described amine hardener is a Triethylenetetramine (TETA).
8. the application of claim 6 or 7 matrix material is characterized in that described epoxy resin system contains bisphenol-A and/or bisphenol-f.
9. each the application of matrix material of aforementioned claim 5-8 is characterized in that described epoxy resin system contains epoxy chloropropane.
10. each the application of matrix material of aforementioned claim 1-4 is characterized in that described tackiness agent is a vinyl ester resin.
11. repair material is used to produce each the application of matrix material of aforementioned claim 1-10, it is characterized in that described repair material can transform to obtain described matrix material with suitable stiffening agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910173338.6A CN101955336B (en) | 2009-07-13 | 2009-07-13 | Application of silicon carbide composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910173338.6A CN101955336B (en) | 2009-07-13 | 2009-07-13 | Application of silicon carbide composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101955336A true CN101955336A (en) | 2011-01-26 |
| CN101955336B CN101955336B (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910173338.6A Active CN101955336B (en) | 2009-07-13 | 2009-07-13 | Application of silicon carbide composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114437619A (en) * | 2022-04-04 | 2022-05-06 | 河北大唐国际王滩发电有限责任公司 | Silicon carbide wear-resistant paint for repairing and protecting overcurrent component |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1747797B (en) * | 2003-02-07 | 2011-08-17 | 戴蒙得创新股份有限公司 | Equipment abrasive surfaces of extended resistance and methods for their manufacture |
| ITMI20071200A1 (en) * | 2007-06-14 | 2008-12-15 | Oto Melara Spa | REINFORCEMENT AND ARMORING PANEL FOR A VEHICLE |
-
2009
- 2009-07-13 CN CN200910173338.6A patent/CN101955336B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114437619A (en) * | 2022-04-04 | 2022-05-06 | 河北大唐国际王滩发电有限责任公司 | Silicon carbide wear-resistant paint for repairing and protecting overcurrent component |
| CN114437619B (en) * | 2022-04-04 | 2022-06-21 | 河北大唐国际王滩发电有限责任公司 | Silicon carbide wear-resistant paint for repairing and protecting overcurrent component |
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| Publication number | Publication date |
|---|---|
| CN101955336B (en) | 2014-10-08 |
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