CN108892925A - A kind of anti-lightning strike composite material surface film and its preparation method and application - Google Patents
A kind of anti-lightning strike composite material surface film and its preparation method and application Download PDFInfo
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
- C08J2463/04—Epoxynovolacs
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
- C08J2479/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08J2479/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/16—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers in which all the silicon atoms are connected by linkages other than oxygen atoms
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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- C08K2201/001—Conductive additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2201/011—Nanostructured additives
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/041—Carbon nanotubes
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/55—Boron-containing compounds
Abstract
A kind of anti-lightning strike composite material surface film and its preparation method and application, it is related to a kind of anti-lightning strike composite material surface film of aerospace and its preparation method and application.The problems such as poor, complex process that the invention solves electromagnetic shielding performances in the previous anti-lightning strike method of aerospace composite product or big weight gain；Using carbon nanomaterial and micron silver thin slice as conductive material, a kind of new method of epoxy resin modification is proposed, and improve the heat resistance and toughness of epoxy resin.Anti-lightning strike composite material surface film of the invention is made of epoxy resin, micron silver thin slice, carbon nanomaterial, plasticized modifier, heat-proof modifier, curing agent, UV stabilizer and carrier.The preparation method of the anti-lightning strike skin covering of the surface is to be formed a film after raw material are blended uniformly using resin hot melt.The anti-lightning strike composite material surface film of the present invention can improve the surface quality of composite material structural member, and have anti-lightning strike function.
Description
Technical field
The present invention relates to anti-lightning strike composite material surface films of a kind of aerospace and its preparation method and application.
Background technique
Due to loss of weight demand, aerospace field largely uses composite material substitution metal as aircraft body material,
Composite material has many advantages, such as excellent specific strength, since conductivity of composite material can be poor compared with metal, encounter lightning stroke after be difficult by
High-energy electric current conducts, and necessarily leads to the accumulation of big energy, and the damage of the destruction or interior instrument that cause composite material is lost
Effect.Currently, the anti-lightning strike protection of composite material mainly has using the side for shunting strips, the attached metal net mode of paving or flame-spraying aluminium
The problems such as formula, the above form there are electromagnetic shielding performances poor, complex process or big weight gain.
Summary of the invention
The present invention be directed to the preparation method and application that composite material proposes a kind of anti-lightning strike composite material surface film.
The present invention is using non-metallic conducting materials complexed metal silver thin slices such as carbon nanotube, graphenes, as conductive bodies
Material is scattered in uniform filling in resin matrix using ultrasonic disperse technology, under high temperature and pressure carbon nanotube or graphite
The fillers such as alkene oriented alignment again forms with prepreg co-curing, plays lightning Protection and electromagnetic shielding action to aircraft components.
A kind of anti-lightning strike composite material surface film of the invention, it is by 75~100 parts of asphalt mixtures modified by epoxy resin according to parts by weight
Rouge, 25~60 parts of micron silver thin slices, 2~10 parts of carbon nanomaterial, 10~15 parts of plasticized modifier, 10~20 parts it is heat-resisting
Modifying agent, 10~30 parts of curing agent, 1~5 part of UV stabilizer and carrier composition.
A kind of preparation method of anti-lightning strike composite material surface film of the invention follows the steps below：
One, 75~100 parts of epoxy resin, 25~40 parts of micron silver thin slice, 2~10 parts of carbon are weighed by mass fraction to receive
Rice material, 10~15 parts of plasticized modifiers, 10~20 parts of heat-proof modifiers, 10~30 parts of curing agent and 1~5 part of UV stablize
Agent；
Two, the weighed epoxy resin of step 1 is heated in high speed disperser 150~170 DEG C, is weighed in step 1
Carbon nanomaterial be added in high speed disperser 60~120min of stirring, obtain blending resin；
Three, blending resin in step 2 is heated to 160~180 DEG C, further dispersed in ultrasonic dispersing machine；
Four, by step 3 blending resin and step 1 in weighed micron silver thin slice 3 are ground in three-roll grinder
Time, then be added in kneader with plasticized modifier weighed in step 1, heat-proof modifier, curing agent, UV stabilizer, 120
30~60min is mediated at~140 DEG C, then vacuumizes 10~30min；
Five, the resin in step 4 is used under carrier auxiliary on hot melt film laminator and is formed a film, film-forming temperature is 80~100
℃。
Anti-lightning strike composite material surface film of the invention is used to prepare anti-lightning strike composite panel.
A kind of anti-lightning strike composite material surface film advantage of the invention is as follows：
1, present invention employs carbon nanotubes and graphene cooperation micron silver thin slice as skin covering of the surface conductive material, with tradition
Silver-colored thin slice compared as conductive material, reduce the additional amount of silver-colored thin slice, unitary resistance value still keeps reduced levels, alleviates
Skin covering of the surface weight.
2, toughener of the present invention is epoxy resin toughened using polyimides and polyamidoimide nanometer powder joint, dual
Toughening effect is better than single mode.
3, heat-proof modifier presses any ratio by one or both of siliceous aryne resin and carborane-benzimidazole
Composition.Both heat-proof modifiers are obvious to epoxy resin heat resistance modified effect, with the use of taking into account heat resistance and economy.
The heat resistance of skin covering of the surface of the present invention has obtained unexpected raising, and increase rate is up to 40%.
Detailed description of the invention
Fig. 1 is the anti-lightning strike each stage structures status diagram of composite material surface film preparation of the present invention.
Specific embodiment
The technical solution of the present invention is not limited to the following list, further includes between each specific embodiment
Any combination.
Specific embodiment one：A kind of anti-lightning strike composite material surface film of the invention, it is by 75 according to parts by weight
~100 parts of epoxy resin, 25~60 parts of silver-colored thin slices, 2~10 parts of carbon nanomaterial, 10~15 parts of plasticized modifier, 10
~20 parts of heat-proof modifiers, 10~30 parts of curing agent, 1~5 part of UV stabilizer and carrier composition.
Specific embodiment two：The present embodiment is different from the first embodiment in that：Epoxy resin be by N, N, N',
N'- tetra- (oxiranylmethyl radical) -1,3- benzene dimethylamine、
Naphthalene novolac epoxy resinOne of or in which two
Kind forms in any proportion.It is other same as the specific embodiment one.
Specific embodiment three：The present embodiment is different from the first and the second embodiment in that：The silver-colored lamina dimensions of micron
It is 5~15 μm.It is other the same as one or two specific embodiments.
Specific embodiment four：Unlike one of present embodiment and specific embodiment one to three：Carbon nanomaterial
It is made of one or more of graphene, carbon nanotube or conductive black by any ratio.It is other with specific embodiment one to
One of three is identical.
Specific embodiment five：Present embodiment is unlike specific embodiment one to four：Toughener is by polyamides Asia
Amine and polyamidoimide press 3:2 ratios composition.
Polyimide structures formula：Wherein R be toluene di-isocyanate(TDI) or
Methyl diphenylene diisocyanate.
Polyamidoimide structural formula：Wherein：R isOr
Specific embodiment six：Present embodiment is unlike specific embodiment one to five：Heat-proof modifier is by containing
One or both of silicon aryne resin and carborane-benzimidazole are by any than composition.Both heat-proof modifiers pair
Thermosetting resin surface film heat resistance modified effect is best, with the use of taking into account heat resistance and economy.Other and specific implementation
One of mode one to five is identical.
Siliceous aryne resin structural formula：
Between carborane-benzimidazole structure formula：
Specific embodiment seven：Unlike one of present embodiment and specific embodiment one to six：Curing agent is 4,
4'- diaminodiphenylsulfone.It is other identical as one of specific embodiment one to six.
Specific embodiment eight：Unlike one of present embodiment and specific embodiment one to seven：UV stabilizer is
By rutile type nano titanium dioxide, nano zine oxide, ESCALOL 567,2- hydroxyl -4- n-octyloxy hexichol
One or more of ketone is by any than composition.It is other identical as one of specific embodiment one to seven.
Specific embodiment nine：Unlike one of present embodiment and specific embodiment one to eight：Carrier is polyester
One of non-woven fabrics, aramid fiber non-woven fabrics, glass fibre non-woven, quartz fibre non-woven fabrics.Other and specific embodiment party
One of formula one to eight is identical.
Specific embodiment ten：A kind of preparation method of anti-lightning strike composite material surface film of present embodiment is according to following
Step carries out：
One, 75~100 parts of epoxy resin, 25~40 parts of micron silver thin slice, 2~10 parts of carbon are weighed by mass fraction to receive
Rice material, 10~15 parts of plasticized modifiers, 10~20 parts of heat-proof modifiers, 10~30 parts of curing agent and 1~5 part of UV stablize
Agent；
Two, the weighed epoxy resin of step 1 is heated in high speed disperser 150~170 DEG C, is weighed in step 1
Carbon nanomaterial be added in high speed disperser 60~120min of stirring, obtain blending resin；
Three, blending resin in step 2 is heated to 160~180 DEG C, further dispersed in ultrasonic dispersing machine；
Four, by step 3 blending resin and step 1 in weighed micron silver thin slice 3 are ground in three-roll grinder
Time, then be added in kneader with plasticized modifier weighed in step 1, heat-proof modifier, curing agent, UV stabilizer, 120
30~60min is mediated at~140 DEG C, then vacuumizes 10~30min；
Five, the resin in step 4 is used under carrier auxiliary on hot melt film laminator and is formed a film, film-forming temperature is 80~100
℃。
Specific embodiment 11：The anti-lightning strike composite material surface film of present embodiment be used to prepare it be used to prepare it is anti-
Be struck by lightning composite panel.
Specific embodiment 12：Present embodiment is unlike specific embodiment 11：Anti-lightning strike composite material
Plate preparation method is as follows：
The smooth paving of anti-lightning strike composite material surface film is invested into prepreg outer surface, in 180~200 DEG C of autoclave, 0.4
Co-curing is carried out under~0.6MPa, obtains anti-lightning strike composite material.
It is other identical as specific embodiment 11.
High-speed mixer mixing speed described in present embodiment is not less than 1500r/min.
Beneficial effects of the present invention are verified by following tests：
Test 1, a kind of this preparation method for testing anti-lightning strike composite material surface film follow the steps below：
One, 90 parts of epoxy resin, 40 parts of micron silver thin slice, 2 parts of carbon nanomaterials, 12 parts of increasings are weighed by mass fraction
Tough modifying agent, 10 parts of heat-proof modifiers, 30 parts of curing agent and 2 parts of UV stabilizers；
Two, the weighed epoxy resin of step 1 is heated in high speed disperser 150~170 DEG C, is weighed in step 1
Carbon nanomaterial be added to high speed disperser high speed stir 60~120min, obtain blending resin；
Three, blending resin in step 2 is heated to 160~180 DEG C, further dispersed in ultrasonic dispersing machine；
Four, by step 3 blending resin and step 1 in weighed micron silver thin slice 3 are ground in three-roll grinder
Time, then be added in kneader with plasticized modifier weighed in step 1, heat-proof modifier, curing agent, UV stabilizer, 120
30~60min is mediated at~140 DEG C, then vacuumizes 10~30min；
Five, the resin in step 4 is used under carrier auxiliary on hot melt film laminator and is formed a film, film-forming temperature is 80~100
℃。
This test high-speed mixer mixing speed is not less than 1500r/min；
Vacuum kneader vacuum degree described in present embodiment is not less than -0.092Mpa；
The epoxy resin of this test is N, N, N ', N '-four (oxiranylmethyl radical) -1,3- benzene dimethylamine：Naphthalene phenolic aldehyde
Epoxy resin is 10 in mass ratio:1 ratio composition；
The plasticized modifier of this test is；Plasticized modifier is polyimides and polyamidoimide is 3 in mass ratio:2
Blending nanometer powder, powder particle be 30 μm~50 μm；
The heat-proof modifier of this test is siliceous aryne resin；
The UV stabilizer of this test is rutile type nano titanium dioxide；
The carrier of this test is polyester non-woven fabric.
Test 2, a kind of this preparation method for testing anti-lightning strike composite material surface film follow the steps below：
One, 90 parts of epoxy resin, 30 parts of micron silver thin slice, 3 parts of carbon nanomaterials, 10 parts of increasings are weighed by mass fraction
Tough modifying agent, 12 parts of heat-proof modifiers, 30 parts of curing agent and 2 parts of UV stabilizers；
Two, the weighed epoxy resin of step 1 is heated in high speed disperser 150~170 DEG C, is weighed in step 1
Carbon nanomaterial be added to high speed disperser high speed stir 60~120min, obtain blending resin；
Three, blending resin in step 2 is heated to 160~180 DEG C, further dispersed in ultrasonic dispersing machine；
Four, by step 3 blending resin and step 1 in weighed micron silver thin slice 3 are ground in three-roll grinder
Time, then be added in kneader with plasticized modifier weighed in step 1, heat-proof modifier, curing agent, UV stabilizer, 120
30~60min is mediated at~140 DEG C, then vacuumizes 10~30min；
Five, the resin in step 4 is used under carrier auxiliary on hot melt film laminator and is formed a film, film-forming temperature is 80~100
℃。
This test high-speed mixer mixing speed is not less than 1500r/min；
Vacuum kneader vacuum degree described in present embodiment is not less than -0.092Mpa；
The epoxy resin of this test is N, N, N ', N '-four (oxiranylmethyl radical) -1,3- benzene dimethylamine：Naphthalene phenolic aldehyde
Epoxy resin is 10 in mass ratio:1 ratio composition；
The plasticized modifier of this test is；Plasticized modifier is polyimides and polyamidoimide is 3 in mass ratio:2
Blending nanometer powder, powder particle be 30 μm~50 μm；
The heat-proof modifier of this test is siliceous aryne resin；
The UV stabilizer of this test is rutile type nano titanium dioxide；
The carrier of this test is polyester non-woven fabric.
Anti-lightning strike composite material surface film basic performance such as the following table 1 is prepared in test 1~test 2：
The anti-lightning strike composite material surface film basic performance of table 1
Comparative sample 1 is the graphene that epoxy resin surface film adds 3% mass fraction, and comparative sample 2 is epoxy resin surface
Film adds the silver-colored thin slice of 60% mass fraction.Anti-lightning strike composite material surface film of the invention is being added relative to fine silver thin slice
In the case that sample mass area ratio is greatly reduced, very low-resistance value is maintained, is beneficial to suitable after composite material experience is struck by lightning
Benefit export lightning current.
Embodiment 3
The anti-lightning strike anti-lightning strike composite material of composite material surface film preparation prepared by Examples 1 and 2, detailed process is such as
Under：
The smooth paving of anti-lightning strike composite material surface film is invested into prepreg outer surface, in 180 DEG C of autoclave, high pressure 0.6MPa
Lower carry out co-curing, obtains anti-lightning strike composite material.
It is presented by the flake micron silver thin slice in the anti-lightning strike composite material surface film of solidification process perpendicular to pressure direction
It is regularly arranged, such as attached drawing 1.The lamella arrangements of the silver-colored thin slice of micron are conducive to the conducting of electric current, and carbon nanotube produces between silver-colored thin slice
Raw function served as bridge reduces the thin bar to bar resistance of silver, may ultimately reach the anti-lightning strike function of composite material.
Claims (10)
1. a kind of anti-lightning strike composite material surface film, it is characterised in that anti-lightning strike composite material surface film be according to parts by weight by
75~100 parts of epoxy resin, 25~60 parts of micron silver thin slices, 2~10 parts of carbon nanomaterial, 10~15 parts of toughening modifyings
Agent, 10~20 parts of heat-proof modifiers, 10~30 parts of curing agent, 1~5 part of UV stabilizer and carrier composition.
2. a kind of anti-lightning strike composite material surface film according to claim 1, it is characterised in that epoxy resin be by N,
One of (the oxiranylmethyl radical) -1,3- of N, N', N'- tetra- benzene dimethylamine, naphthalene novolac epoxy resin or in which two kinds are pressed
Arbitrary proportion composition.
3. a kind of anti-lightning strike composite material surface film according to claim 1, it is characterised in that micron silver lamina dimensions
It is 5~15 μm.
4. a kind of anti-lightning strike composite material surface film according to claim 1, it is characterised in that carbon nanomaterial is by stone
One or more of black alkene, carbon nanotube or conductive black are by any than composition.
5. a kind of anti-lightning strike composite material surface film according to claim 1, it is characterised in that toughener is by polyamides Asia
Amine and polyamidoimide press 3:2 ratios composition.
6. a kind of anti-lightning strike composite material surface film according to claim 1, it is characterised in that heat-proof modifier is by containing
One or both of silicon aryne resin and carborane-benzimidazole are by any than composition.
7. a kind of anti-lightning strike composite material surface film according to claim 1, it is characterised in that curing agent 4,4'- bis-
Aminodiphenyl sulfone.
8. the method for preparing a kind of anti-lightning strike composite material surface film described in claim 1, it is characterised in that anti-lightning strike compound
Material surface membrane preparation method follows the steps below：
One, 75~100 parts of epoxy resin, 25~40 parts of micron silver thin slice, 2~10 parts of carbon nanometer materials are weighed by mass fraction
Material, 10~15 parts of plasticized modifiers, 10~20 parts of heat-proof modifiers, 10~30 parts of curing agent and 1~5 part of UV stabilizer；
Two, the weighed epoxy resin of step 1 is heated to 150~170 DEG C in high speed disperser, weighed carbon in step 1
Nano material is added to 60~120min of stirring in high speed disperser, obtains blending resin；
Three, blending resin in step 2 is heated to 160~180 DEG C, further dispersed in ultrasonic dispersing machine；
Four, by step 3 blending resin and step 1 in weighed micron silver thin slice ground in three-roll grinder 3 times, then
It is added in kneader with plasticized modifier weighed in step 1, heat-proof modifier, curing agent, UV stabilizer, 120~140
30~60min is mediated at DEG C, then vacuumizes 10~30min；
Five, the resin in step 4 is used under carrier auxiliary on hot melt film laminator and is formed a film, film-forming temperature is 80~100 DEG C.
9. a kind of application of anti-lightning strike composite material surface film, it is characterised in that it is used to prepare anti-lightning strike composite panel.
10. a kind of application of anti-lightning strike composite material surface film according to claim 9, it is characterised in that anti-lightning strike compound
Plate of material preparation method is as follows：
The smooth paving of anti-lightning strike composite material surface film is invested into prepreg outer surface, 180~200 DEG C of autoclave, 0.4~
Co-curing is carried out under 0.6MPa, obtains anti-lightning strike composite material.
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| CN109795185A (en) * | 2018-12-05 | 2019-05-24 | 广东炜田环保新材料股份有限公司 | A kind of anti-electromagnetic radiation waterproof breathable membrane material and its preparation method and application |
| CN110396362A (en) * | 2019-08-10 | 2019-11-01 | 蚌埠市正园电子科技有限公司 | A kind of coating of the transformer production with anti-lightning strike function |
| CN110564107A (en) * | 2019-09-19 | 2019-12-13 | 四川大学 | Efficient electromagnetic shielding composite material and preparation method thereof |
| CN116120849A (en) * | 2022-12-29 | 2023-05-16 | 江苏新扬新材料股份有限公司 | Low-cost light lightning protection surface film for composite material structure and application thereof |
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