CN105780086A - Preparation method for interlayer porous structure insulating film of carbon fiber magnesium alloy laminated plate - Google Patents
Preparation method for interlayer porous structure insulating film of carbon fiber magnesium alloy laminated plate Download PDFInfo
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- CN105780086A CN105780086A CN201610134329.6A CN201610134329A CN105780086A CN 105780086 A CN105780086 A CN 105780086A CN 201610134329 A CN201610134329 A CN 201610134329A CN 105780086 A CN105780086 A CN 105780086A
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- magnesium alloy
- carbon fiber
- laminated plate
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/30—Anodisation of magnesium or alloys based thereon
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- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a preparation method for an interlayer porous structure insulating film of a carbon fiber magnesium alloy laminated plate. According to the method, the porous structure insulating film prepared from a magnesium alloy surface is compounded on the carbon fiber magnesium alloy laminated plate, the interlayer shearing and stripping and other comprehensive mechanical properties of the laminated plate are improved, and the galvanic corrosion behavior between components of the laminated plate is restrained. The porosity of the porous structure insulating film ranges from 20% to 70%, and the thickness of the porous structure insulating film ranges from 1 micrometer to 10 micrometers. The porosity of the film layer is beneficial to permeation of polymer, the insulativity of the film layer is beneficial to restraining of the galvanic corrosion behavior between the components of the laminated plate, and therefore it is ensured that the laminated plate has high interlayer shearing and stripping and other comprehensive mechanical properties and has good corrosion resistance. The preparation method has important value for preparing the high-performance ultra-light carbon fiber magnesium alloy laminated plate.
Description
Technical field
The invention belongs to fibre metal laminate (FiberMetalLaminates is called for short FMLs) preparing technical field, concrete invention relates to the preparation method of loose structure dielectric film between a kind of carbon fiber magnesium alloy laminate layer.
Background technology
Strengthen aluminum alloy laminate (ARALL), glass fiber reinforcement aluminum alloy laminate (GLARE) and fibre reinforced titanium alloy layer plywood (TiGr) as a new generation's fibre metal laminate material carbon fiber magnesium alloy laminate density relatively aramid fiber and reduce 20～60%, and there is the functional characteristic that damping noise reduction and electromagnetic shielding etc. are prominent, can be used as the structural details such as fuselage wallboard, Wing panel, rocket cylinder body and vertical fin eyelid covering.But, the interfacial bonding strength of current carbon fiber magnesium alloy laminate, particularly interlaminar strength is relatively low.Additionally, there is bigger potential difference (about 1.8V) between carbon fiber and magnesium alloy, easily caused by interlayer electrochemical corrosion in life-time service process.Existing method is by carrying out blasting treatment at Mg alloy surface, but the method main lift is that interlaminar shear strength and toughness, interlaminar strength and toughness are still relatively low, is difficult to play the effect of electrochemical corrosion between inhibition layer plywood component simultaneously.Chinese patent literature CN101623944B discloses a kind of magnesium alloy sandwich plate preparation method.Mg alloy surface is sequentially carried out anodic oxidation and sealing pores by the method, and to improve the decay resistance of magnesium alloy panel, but it has the drawback that the interfacial bonding strength weakening between magnesium alloy panel and polymer.Therefore, the present invention is by adopting differential of the arc technology at carbon fiber magnesium alloy laminate Mg alloy surface loose structure dielectric film, it is possible to be effectively improved the bond strength between carbon fiber magnesium alloy laminate layer and anti-galvanic corrosion performance.
Summary of the invention
The purpose of the present invention is intended between carbon fiber magnesium alloy laminate layer Mg alloy surface a kind of loose structure dielectric film of preparation, its porous is conducive to the infiltration of polymer, to promote the interfacial bonding strength of laminate；Its insulating properties is beneficial to the galvanic corrosion behavior between inhibition layer plywood component.The carbon fiber magnesium alloy laminate that the present invention has, for preparation, the decay resistance that high interfacial bonding strength is become reconciled has important value.
For achieving the above object, the technical scheme is that the dielectric film adopting differential of the arc technology to prepare one layer of loose structure at carbon fiber magnesium alloy laminate Mg alloy surface.Described differential of the arc technology adopts constant voltage or constant current mode to carry out, and the process time is 2～15min.The porosity obtaining loose structure film is 20～70%, and thickness is 1～10 μm.
The invention have the advantages that porous insulating film prepared by (), the present invention is ensureing that carbon fibre composite and magnesium alloy have high interlaminar shear strength simultaneously, interlaminar strength can be significantly improved, so that laminate obtains good interface comprehensive mechanical property.(2), the present invention adopts porous insulating film prepared by differential of the arc treatment technology to have good toughness so that the interface combination property that laminate has had simultaneously, has the comprehensive mechanical properties such as good endurance and shock resistance.(3), the rete prepared of the present invention there is good insulating properties, can effectively suppress the galvanic corrosion behavior between carbon fiber and magnesium alloy, thus the corrosion resistance promoted between laminate layer.
Accompanying drawing explanation
Accompanying drawing 1The surface texture pattern of loose structure dielectric film is formed for Mg alloy surfaceFigure。
Accompanying drawing 2The section structure pattern of loose structure dielectric film is formed for Mg alloy surfaceFigure。
Detailed description of the invention
Further describing technical scheme below in conjunction with embodiment, following example are only the illustrations to advantageous embodiments of the present invention.
Embodiment 1:
(1) pretreatment: magnesium alloy (AZ31) first soaks to remove the organic dirt of mechanical wet goods of Mg alloy surface residual in lye solution.The oxide layer of Mg alloy surface is removed in pickling.Pickling afterflush also dries.
(2) differential of the arc processes: in the electrolyte that sodium silicate (0.02mol/L), sodium hydroxide (0.13mol/L), sodium citrate (0.10mol/L), potassium fluoride (0.05mol/L) and deionized water are formed, pretreated magnesium alloy plate is carried out differential of the arc treatment technology.Cathode material is 316L rustless steel, its area and magnesium alloy area equation.Additional constant current density is 150mA/cm2；Dutycycle is 30%；Frequency 200HZ.The temperature of electrolyte controls lower than 40 DEG C；The process time is 2min.Laminate surface magnesium alloy plate only carries out one side process.
(3) clean and dry: the magnesium alloy plate after differential of the arc treatment technology is rinsed and dries, removing the electrolyte of Mg alloy surface residual.
(4) after the magnesium alloy plate after differential of the arc technical finesse being replaced laying with carbon fibre composite (T800/FM94), by hot pressing compound on vulcanizer, to obtain carbon fiber magnesium alloy laminate.
(5) carbon fiber magnesium alloy laminate is characterized.Between prepared carbon fiber magnesium alloy laminate layer, thicknesses of layers is about 3 μm, and average pore size is 3 μm, porosity be about 56% (seeAccompanying drawing 1WithAccompanying drawing 2)。
Laminate interlaminar shear strength is 42.0MPa, and peel strength is 5.8N/mm.Compared with matched group (laminate magnesium alloy is blasting treatment), laminate interlaminar shear strength is suitable, and peel strength adds about 280%.The corrosion rate of this laminate that employing weight-loss method records is less than the 22% of matched group.
Embodiment 2:
(1) pretreatment is with case study on implementation 1.
(2) differential of the arc treatment technology: pretreated magnesium alloy plate is carried out differential of the arc treatment technology in the electrolyte that sodium phosphate (0.08mol/L), sodium tetraborate (0.15mol/L), sodium hydroxide (0.05mol/L) and deionized water are formed.Cathode material is 316L rustless steel, its area and magnesium alloy area equation.Additional constant voltage is 130V；Dutycycle is 45%；Frequency 500HZ.The temperature of electrolyte controls lower than 40 DEG C；The process time is 10min.Laminate surface magnesium alloy plate only carries out one side process.
(3) clean and dry: the magnesium alloy plate after differential of the arc treatment technology is rinsed and dries, removing the electrolyte of Mg alloy surface residual.
(4) prefabricated component that this magnesium alloy plate and carbon fibre composite (T800/FM94) are laid to carries out Vacuum Package, adopts autoclave hot pressing compound, prepares carbon fiber magnesium alloy laminate.
(5) carbon fiber magnesium alloy laminate is characterized.Between prepared carbon fiber magnesium alloy laminate layer, thicknesses of layers is about 5 μm, and average pore size is 2 μm, and porosity is about 43%.Laminate interlaminar shear strength is 43.6MPa, and peel strength is 6.2N/mm.The corrosion rate of this laminate that employing weight-loss method records is about the 18% of matched group (laminate magnesium alloy is blasting treatment).
Claims (3)
1. the preparation method of loose structure dielectric film between a carbon fiber magnesium alloy laminate layer, it is characterised in that: adopt differential of the arc technology in described carbon fiber magnesium alloy laminate Mg alloy surface masking, as loose structure dielectric film between laminate layer.
2. differential of the arc technology according to claim 1, it is characterised in that: described differential of the arc technology adopts constant voltage or constant current mode to carry out, and the process time is 2～15min.
3. loose structure dielectric film according to claim 1, it is characterised in that: the porosity of described structural membrane is 20～70%, and thicknesses of layers is 1～10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610134329.6A CN105780086A (en) | 2016-03-10 | 2016-03-10 | Preparation method for interlayer porous structure insulating film of carbon fiber magnesium alloy laminated plate |
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| CN201610134329.6A CN105780086A (en) | 2016-03-10 | 2016-03-10 | Preparation method for interlayer porous structure insulating film of carbon fiber magnesium alloy laminated plate |
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| CN201610134329.6A Pending CN105780086A (en) | 2016-03-10 | 2016-03-10 | Preparation method for interlayer porous structure insulating film of carbon fiber magnesium alloy laminated plate |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582146A (en) * | 2011-12-31 | 2012-07-18 | 杭州超探新材料科技有限公司 | Composite material with magnesium alloy as base body and manufacturing method thereof |
| CN202448410U (en) * | 2011-12-31 | 2012-09-26 | 杭州超探新材料科技有限公司 | Composite material taking magnesium alloy as matrix |
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2016
- 2016-03-10 CN CN201610134329.6A patent/CN105780086A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102582146A (en) * | 2011-12-31 | 2012-07-18 | 杭州超探新材料科技有限公司 | Composite material with magnesium alloy as base body and manufacturing method thereof |
| CN202448410U (en) * | 2011-12-31 | 2012-09-26 | 杭州超探新材料科技有限公司 | Composite material taking magnesium alloy as matrix |
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