CN109853252A - Wave suction composite material and preparation method thereof - Google Patents
Wave suction composite material and preparation method thereof Download PDFInfo
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- CN109853252A CN109853252A CN201711235701.3A CN201711235701A CN109853252A CN 109853252 A CN109853252 A CN 109853252A CN 201711235701 A CN201711235701 A CN 201711235701A CN 109853252 A CN109853252 A CN 109853252A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/30—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being formed of particles, e.g. chips, granules, powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/32—Radiation-absorbing paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
Abstract
The present invention provides Wave suction composite material and preparation method thereof, and Wave suction composite material includes: polyester knitting object；Bottom is formed on polyester knitting object, wherein bottom includes the first resin material and ferrite；Middle layer is formed on bottom, wherein middle layer includes the second resin material and silicon carbide；And top layer, on layer formed between, wherein top layer includes third resin material and graphite.The present invention prepares a kind of multi-functional Wave suction composite material for having good absorbing property and mechanical property.
Description
Technical field
The present invention relates to Material Fields, more particularly, to Wave suction composite material and preparation method thereof.
Background technique
With the development of electronic science and technology, electronic information equipment is all widely used in all trades and professions.Electromagnetism
Influence of the wave to the mankind has also penetrated into each corner.It is all irreplaceable in machinery, electronics, biological field.Electromagnetism skill
While art has brought great convenience, the serious electromagnetism good fortune also seriously attracted penetrates pollution.Electromagnetism good fortune is penetrated not only
Electronic instrument and equipment are interfered, causes it that cannot run well, also will affect the health of the mankind, interferes human normal physiology
Function, in some instances it may even be possible to lead to disease.Therefore, the absorbing material for administering electromagnetic pollution comes into being.
Although coating type absorbing material is widely used, higher want is proposed to coating type absorbing material at present
It asks, that is, needs to meet the requirement of " wide, thin, light, strong ", however the single wave absorbing agent of single coating is difficult to realize this and wants in the market
It asks, therefore needs to develop the multi-functional composite wave-suction material that one kind has " wide, thin, light, strong " requirement, both had good suction wave
Performance, but also with good mechanical property.
Summary of the invention
Present invention incorporates the advantage of three kinds of ferrite, silicon carbide and graphite absorbing materials, provides and have good suction wave
The multi-functional Wave suction composite material of performance and mechanical property.
The present invention provides a kind of methods for preparing Wave suction composite material, comprising: by the first diluent and the first resinous wood
Material mixing, stirs evenly, obtains the first mixture；Ferrite is added in first mixture, stirs evenly, obtains second
Mixture；The first curing agent is added in second mixture, stirs evenly, obtains bottom coating；By the bottom coating
Coating is on the knitted fabric, dry, forms bottom on the knitted fabric；Second diluent is mixed with the second resin material, is stirred
It mixes uniformly, obtains third mixture；Silicon carbide is added in the third mixture, is stirred evenly, the 4th mixture is obtained；?
The second curing agent is added in 4th mixture, stirs evenly, obtains intermediate layer coating；The intermediate layer coating is coated on
It is dry on the bottom, middle layer is formed on the bottom；Third diluent is mixed with third resin material, stirring is equal
It is even, obtain the 5th mixture；Graphite is added in the 5th mixture, is stirred evenly, the 6th mixture is obtained；Described
Third curing agent is added in six mixtures, stirs evenly, obtains top coat paint；The top coat paint is coated on the middle layer
On, it is dry, top layer is formed on the middle layer, to form the Wave suction composite material.
In the above-mentioned methods, mass fraction of the ferrite in the bottom coating is 10%~60%.
In the above-mentioned methods, mass fraction of the silicon carbide in the intermediate layer coating is 10%~60%.
In the above-mentioned methods, mass fraction of the graphite in the top coat paint is 10%~60%.
In the above-mentioned methods, the thickness of the bottom, the middle layer and the top layer is 0.4mm~0.6mm.
In the above-mentioned methods, first diluent, second diluent and the third diluent include methanol,
One of dehydrated alcohol, propyl alcohol and isopropanol are a variety of.
In the above-mentioned methods, first resin material, second resin material and the third resin material wrap
Include one of epoxy resin, polyester resin, amino resins and polyurethane or a variety of.
In the above-mentioned methods, first curing agent, second curing agent and the third curing agent include polyamides
One of polyimide resin, m-phenylene diamine (MPD) and benzene dimethylamine are a variety of.
In the above-mentioned methods, mass ratio, second diluent of first diluent and first resin material
Mass ratio with the mass ratio of second resin material and the third diluent and the third resin material is 2:1
~3:1.
In the above-mentioned methods, mass fraction, second curing agent of first curing agent in the bottom coating
It is 5% in the mass fraction of mass fraction and the third curing agent in the top coat paint in the intermediate layer coating
~15%.
The present invention also provides a kind of Wave suction composite materials, comprising: polyester knitting object；Bottom is formed in the terylene needle
On fabric, wherein the bottom includes the first resin material and ferrite；Middle layer is formed on the bottom, wherein institute
Stating middle layer includes the second resin material and silicon carbide；And top layer, it is formed on the middle layer, wherein the top layer packet
Include the second resin material and graphite.
In above-mentioned Wave suction composite material, first resin material, second resin material and the third resin
Material includes one of epoxy resin, polyester resin, amino resins and polyurethane or a variety of.
The present invention is using polyester knitting object as base fabric, using epoxy resin as matrix, the biggish ferrite of magnetic loss rate is selected to make
For bottom wave absorbing agent, selects the adjustable dielectric loss type absorbing material silicon carbide of resistivity as middle layer wave absorbing agent, select price
Cheap, the lesser graphite of density prepares a kind of more function for having good absorbing property and mechanical property as surface layer wave absorbing agent
Energy Wave suction composite material, is able to satisfy " wide, thin, light, strong " composite request to coating type absorbing material.
Detailed description of the invention
Fig. 1 shows the schematic diagram of Wave suction composite material of the invention.
Specific embodiment
In view of the single wave absorbing agent of single coating " wide, thin, light, strong " difficult to realize to coating type absorbing material in the market
Composite request.The present invention is using polyester knitting object as base fabric, using epoxy resin as matrix, selects the biggish ferrite of magnetic loss rate
As bottom wave absorbing agent, selects the adjustable dielectric loss type absorbing material silicon carbide of resistivity as middle layer wave absorbing agent, select valence
Lattice are cheap, the lesser graphite of density is as surface layer wave absorbing agent, develop and a kind of have the more of good absorbing property and mechanical property
Function Wave suction composite material is able to satisfy " wide, thin, light, strong " composite request to coating type absorbing material.
Graphite/carbon SiClx of the invention/three layers of ferrite composite coating is as shown in Figure 1.Composite coating is formed in base fabric 1
On.Base fabric 1 can be polyester knitting object, however, the present invention is not limited thereto.During composite coating includes bottom 2, is formed on bottom 2
Top layer 4 on interbed 3 and layer formed between 3.Each layer of composite coating is using resin material as matrix.Resin material packet
Include one of epoxy resin, polyester resin, amino resins and polyurethane or a variety of.Wave absorbing agent in bottom 2 is ferrite, in
Wave absorbing agent in interbed 3 is silicon carbide, and the wave absorbing agent in top layer 4 is graphite.The thickness of bottom 2, middle layer and top layer 4 is equal
For 0.4~0.6mm.
Wave suction composite material of the invention the preparation method is as follows: take quantity of resin material, weigh a certain amount of diluent
(for example, one of methanol, dehydrated alcohol, propyl alcohol and isopropanol or a variety of) is mixed with resin, with blender stirring 20~
40min is allowed to uniformly mixed, wherein the mass ratio of resin material and diluent can be 1:2~1:3；Again by definite quality (matter
Amount score is added in mixture for the wave absorbing agent of 10%-60%), stirs 10~20min with blender and is allowed to uniformly mixed；Most
Afterwards, a certain amount of curing agent (including one of polyamide, m-phenylene diamine (MPD) and benzene dimethylamine or a variety of) is added and is mixed
In object, certain time is stirred with electric mixer and guarantees to be uniformly mixed, wherein the mass fraction of curing agent in each coating agent
It is 5%~15%.So far, coating agent preparation finishes.Knitted fabric base fabric is fixed on coating machine, suitable coating agent is taken to topple over
In knitted surfaces and carry out top finish；Coated fabric is placed in baking oven after coating, keeps temperature 50 C~70 DEG C
2~4h of drying.So far, the primer coating preparation of coated fabric finishes, and selects different wave absorbing agents that different coatings is made, repeats
Middle layer and top layer can be made in the coating operation of bottom, so that Wave suction composite material be made.In bottom 2, middle layer 3 and top layer 4
In, the ratio range of material is identical, but is directed to same Wave suction composite material, and each layer of material mixture ratio can be in respective model
Interior variation is enclosed, and each layer of material mixture ratio can be the same or different from each other.
Ferrite belongs to magnetic loss type material, mainly absorbs electricity by magnetic hystersis loss, ferromagnetic resonance and the loss of nest stream etc.
Magnetic wave energy, and be thermal energy by electromagnetic energy.Ferrite and the resin material of addition can synthesize composite diphase material, i.e. two-phase
Between the complexing actions such as counterdiffusion of ion occur.Different ferrite contents influence the absorbing property of coating very big.decagram
The loss mechanism of silicon carbide ceramics absorbing material is complex, is mainly lost and is absorbed by the dielectric relaxor of medium
Electromagnetic wave, it is considered that be the collective effect of a variety of loss mechanisms.Different carborundum contents, using different loss mechanisms as suction
The main reason for receipts, influences the absorbing property of coating.
Graphite is a kind of carbon material of layer structure, with high thermal conductivity coefficient, high dielectric constant, high electron mobility,
The characteristics such as extra specific surface area.Wherein, the higher dielectric constant of graphene and the easy dielectric relaxor characteristic of outer-shell electron make it can
As potential dielectric loss substrate.Its impedance not only can be improved in remaining defect and group in reduced graphene oxide serving
With characteristic, it can also be made to be converted to fermi level state rapidly, the dielectric relaxor of defect and the electronics dipole of group can also occur
Relaxation, these are conducive to scattering and electromagnetic wave absorption.Different content of graphite influence the absorbing property of coating.
It is illustrated below with reference to specific embodiment, to better understand the invention.
Embodiment 1
It weighs 100g diluent dehydrated alcohol to mix with 50g epoxy resin, it is equal to be allowed to mixing with blender stirring 30min
It is even；The ferrite of 300g is added in mixture again, stir 15min with blender and is allowed to uniformly mixed；Finally, 50g is consolidated
Agent polyamide is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains bottom coating.It will
Polyester knitting object base fabric is fixed on coating machine, is taken quantitative coating agent to be poured over knitted surfaces and is carried out top finish；It applies
Coated fabric is placed in baking oven after layer, keeps the dry 3h of temperature 60 C.So far, prepared by the primer coating of coated fabric
Finish, bottom with a thickness of 0.5mm.
It weighs 155g diluent dehydrated alcohol to mix with 70g epoxy resin, it is equal to be allowed to mixing with blender stirring 30min
It is even；The silicon carbide of 225g is added in mixture again, stir 15min with blender and is allowed to uniformly mixed；Finally, 50g is consolidated
Agent polyamide is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains intermediate layer coating.
Polyester knitting object base fabric is fixed on coating machine, quantitative coating agent is taken to be poured over bottom surface and carries out top finish；It applies
Coated fabric is placed in baking oven after layer, keeps the dry 3h of temperature 60 C.So far, the middle layer coating preparation of coated fabric
Finish, middle layer with a thickness of 0.5mm.
It weighs 250g diluent dehydrated alcohol to mix with 100g epoxy resin, it is equal to be allowed to mixing with blender stirring 30min
It is even；The graphite of 100g is added in mixture again, stir 15min with blender and is allowed to uniformly mixed；Finally, 50g is solidified
Agent polyamide is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains top coat paint.It will wash
Synthetic fibre knitted fabric base fabric is fixed on coating machine, is taken quantitative coating agent to topple over interlayer surfaces and is carried out top finish；Coating is complete
Coated fabric is placed in baking oven after finishing, keeps the dry 3h of temperature 60 C.So far, the top coat preparation of coated fabric finishes,
Top layer with a thickness of 0.5mm, thus be made Wave suction composite material.
Embodiment 2
It weighs 225g diluent methanol to mix with 100g epoxy resin, is allowed to uniformly mixed with blender stirring 20min；Again
The ferrite of 150g is added in mixture, stir 10min with blender and is allowed to uniformly mixed；Finally, 25g curing agent is gathered
Amide resin is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains bottom coating.By terylene needle
Fabric substrate is fixed on coating machine, is taken quantitative coating agent to be poured over knitted surfaces and is carried out top finish；Coating finishes
Coated fabric is placed in baking oven afterwards, keeps the dry 2h of temperature 50 C.So far, the primer coating preparation of coated fabric finishes, bottom
Layer with a thickness of 0.4mm.
It weighs 140g diluent propyl alcohol to mix with 60g polyurethane, is allowed to uniformly mixed with blender stirring 40min；Again will
The silicon carbide of 250g is added in mixture, stirs 20min with blender and is allowed to uniformly mixed；Finally, by 50g curing agent polyamides
Polyimide resin is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains intermediate layer coating.By terylene needle
Fabric substrate is fixed on coating machine, is taken quantitative coating agent to be poured over bottom surface and is carried out top finish；After coating
Coated fabric is placed in baking oven, the dry 4h of temperature 50 C is kept.So far, the middle layer coating preparation of coated fabric finishes, in
Interbed with a thickness of 0.6mm.
It weighs 300g diluent dehydrated alcohol to mix with 100g amino resins, it is equal to be allowed to mixing with blender stirring 30min
It is even；The graphite of 50g is added in mixture again, stir 15min with blender and is allowed to uniformly mixed；Finally, by 50g curing agent
Polyamide is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains top coat paint.By terylene
Knitted fabric base fabric is fixed on coating machine, is taken quantitative coating agent to topple over interlayer surfaces and is carried out top finish；Coating finishes
Coated fabric is placed in baking oven afterwards, keeps the dry 3h of temperature 60 C.So far, the top coat preparation of coated fabric finishes, and pushes up
Layer with a thickness of 0.5mm, thus be made Wave suction composite material.
Embodiment 3
It weighs 240g diluent methanol to mix with 80g epoxy resin, is allowed to uniformly mixed with blender stirring 20min；Again
The ferrite of 150g is added in mixture, stir 10min with blender and is allowed to uniformly mixed；Finally, 30g curing agent is gathered
Amide resin is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains bottom coating.By terylene needle
Fabric substrate is fixed on coating machine, is taken quantitative coating agent to be poured over knitted surfaces and is carried out top finish；Coating finishes
Coated fabric is placed in baking oven afterwards, keeps the dry 2h of temperature 50 C.So far, the primer coating preparation of coated fabric finishes, bottom
Layer with a thickness of 0.4mm.
It weighs 240g diluent propyl alcohol to mix with 80g polyurethane, is allowed to uniformly mixed with blender stirring 40min；Again will
The silicon carbide of 150g is added in mixture, stirs 20min with blender and is allowed to uniformly mixed；Finally, by 50g curing agent isophthalic
Diamines is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains intermediate layer coating.By polyester knitting
Object base fabric is fixed on coating machine, is taken quantitative coating agent to be poured over bottom surface and is carried out top finish；It will after coating
Coated fabric is placed in baking oven, keeps the dry 4h of temperature 50 C.So far, the middle layer coating preparation of coated fabric finishes, intermediate
Layer with a thickness of 0.6mm.
It weighs 240g diluent dehydrated alcohol to mix with 80g amino resins, it is equal to be allowed to mixing with blender stirring 30min
It is even；The graphite of 150g is added in mixture again, stir 15min with blender and is allowed to uniformly mixed；Finally, 50g is solidified
Agent benzene dimethylamine is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains top coat paint.By terylene
Knitted fabric base fabric is fixed on coating machine, is taken quantitative coating agent to topple over interlayer surfaces and is carried out top finish；Coating finishes
Coated fabric is placed in baking oven afterwards, keeps the dry 3h of temperature 60 C.So far, the top coat preparation of coated fabric finishes, and pushes up
Layer with a thickness of 0.5mm, thus be made Wave suction composite material.
Embodiment 4
It weighs 250g diluent methanol to mix with 125g polyester resin, is allowed to uniformly mixed with blender stirring 20min；Again
The ferrite of 50g is added in mixture, stir 10min with blender and is allowed to uniformly mixed；Finally, 75g curing agent is gathered
Amide resin is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains bottom coating.By terylene needle
Fabric substrate is fixed on coating machine, is taken quantitative coating agent to be poured over knitted surfaces and is carried out top finish；Coating finishes
Coated fabric is placed in baking oven afterwards, keeps the dry 2h of temperature 50 C.So far, the primer coating preparation of coated fabric finishes, bottom
Layer with a thickness of 0.4mm.
It weighs 250g diluent propyl alcohol to mix with 125g polyurethane, is allowed to uniformly mixed with blender stirring 40min；Again will
The silicon carbide of 50g is added in mixture, stirs 20min with blender and is allowed to uniformly mixed；Finally, by 75g curing agent polyamides
Polyimide resin is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains intermediate layer coating.By terylene needle
Fabric substrate is fixed on coating machine, is taken quantitative coating agent to be poured over bottom surface and is carried out top finish；After coating
Coated fabric is placed in baking oven, the dry 4h of temperature 50 C is kept.So far, the middle layer coating preparation of coated fabric finishes, in
Interbed with a thickness of 0.6mm.
It weighs 250g diluent dehydrated alcohol to mix with 125g amino resins, it is equal to be allowed to mixing with blender stirring 30min
It is even；The graphite of 50g is added in mixture again, stir 15min with blender and is allowed to uniformly mixed；Finally, by 75g curing agent
Polyamide is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains top coat paint.By terylene
Knitted fabric base fabric is fixed on coating machine, is taken quantitative coating agent to topple over interlayer surfaces and is carried out top finish；Coating finishes
Coated fabric is placed in baking oven afterwards, keeps the dry 3h of temperature 60 C.So far, the top coat preparation of coated fabric finishes, and pushes up
Layer with a thickness of 0.5mm, thus be made Wave suction composite material.
Embodiment 5
It weighs 100g diluent methanol to mix with 50g epoxy resin, is allowed to uniformly mixed with blender stirring 20min；Again
The ferrite of 300g is added in mixture, stir 10min with blender and is allowed to uniformly mixed；Finally, 50g curing agent is gathered
Amide resin is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains bottom coating.By terylene needle
Fabric substrate is fixed on coating machine, is taken quantitative coating agent to be poured over knitted surfaces and is carried out top finish；Coating finishes
Coated fabric is placed in baking oven afterwards, keeps the dry 2h of temperature 50 C.So far, the primer coating preparation of coated fabric finishes, bottom
Layer with a thickness of 0.4mm.
It weighs 100g diluent propyl alcohol to mix with 50g polyurethane, is allowed to uniformly mixed with blender stirring 40min；Again will
The silicon carbide of 300g is added in mixture, stirs 20min with blender and is allowed to uniformly mixed；Finally, by 50g curing agent polyamides
Polyimide resin is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains intermediate layer coating.By terylene needle
Fabric substrate is fixed on coating machine, is taken quantitative coating agent to be poured over bottom surface and is carried out top finish；After coating
Coated fabric is placed in baking oven, the dry 4h of temperature 50 C is kept.So far, the middle layer coating preparation of coated fabric finishes, in
Interbed with a thickness of 0.6mm.
It weighs 100g diluent dehydrated alcohol to mix with 50g amino resins, it is equal to be allowed to mixing with blender stirring 30min
It is even；The graphite of 300g is added in mixture again, stir 15min with blender and is allowed to uniformly mixed；Finally, 50g is solidified
Agent polyamide is added in mixture, stirs certain time with blender and guarantees to be uniformly mixed, obtains top coat paint.It will wash
Synthetic fibre knitted fabric base fabric is fixed on coating machine, is taken quantitative coating agent to topple over interlayer surfaces and is carried out top finish；Coating is complete
Coated fabric is placed in baking oven after finishing, keeps the dry 3h of temperature 60 C.So far, the top coat preparation of coated fabric finishes,
Top layer with a thickness of 0.5mm, thus be made Wave suction composite material.
Later, it to the absorbing property of Wave suction composite material made from Examples 1 to 5, tensile property, bending property and cuts
Performance is cut to be tested.It can be measured using any suitable measurement method commonly used in the art, wherein absorbing property is surveyed
The frequency of examination is 2~18GHz.The result of measurement is as shown in table 1 below.
Table 1
As shown in Table 1, the mechanical property of Wave suction composite material prepared by the present invention and absorbing property are good.
Therefore, the present invention is using polyester knitting object as base fabric, using resin material as matrix, selects the biggish iron oxygen of magnetic loss rate
Body is selected the adjustable dielectric loss type absorbing material silicon carbide of resistivity as middle layer wave absorbing agent, is selected as bottom wave absorbing agent
Cheap, the lesser graphite of density as surface layer wave absorbing agent, combine three kinds of respective advantages of absorbing material make again it is compound
Material is provided with the mechanical properties such as certain stretching, bending, shearing, has prepared and has had good absorbing property and mechanical property
Multi-functional Wave suction composite material is able to satisfy " wide, thin, light, strong " composite request to coating type absorbing material.
Present invention can apply to mobile phone, electronic equipment, high-frequency apparatus, microwave active device, radar and microwave communications
The technical fields such as clutter recognition, the electromagnetism interference of system, according to different application bands, the thickness of adjustable function material and
Formula, is made electro-magnetic wave absorption film.
Claims (10)
1. a kind of method for preparing Wave suction composite material characterized by comprising
First diluent is mixed with the first resin material, stirs evenly, obtains the first mixture；
Ferrite is added in first mixture, is stirred evenly, the second mixture is obtained；
The first curing agent is added in second mixture, stirs evenly, obtains bottom coating；
On the knitted fabric by bottom coating coating, dry, bottom is formed on the knitted fabric；
Second diluent is mixed with the second resin material, stirs evenly, obtains third mixture；
Silicon carbide is added in the third mixture, is stirred evenly, the 4th mixture is obtained；
The second curing agent is added in the 4th mixture, stirs evenly, obtains intermediate layer coating；
The intermediate layer coating is coated on the bottom, it is dry, middle layer is formed on the bottom；
Third diluent is mixed with third resin material, stirs evenly, obtains the 5th mixture；
Graphite is added in the 5th mixture, is stirred evenly, the 6th mixture is obtained；
Third curing agent is added in the 6th mixture, stirs evenly, obtains top coat paint；
On the middle layer by top coat paint coating, dry, top layer is formed on the middle layer, thus described in being formed
Wave suction composite material.
2. the method according to claim 1 for preparing Wave suction composite material, which is characterized in that the ferrite is at the bottom
Mass fraction in coating is 10%~60%.
3. the method according to claim 1 for preparing Wave suction composite material, which is characterized in that the silicon carbide is in described
Between mass fraction in coating be 10%~60%.
4. the method according to claim 1 for preparing Wave suction composite material, which is characterized in that the graphite is in the top layer
Mass fraction in coating is 10%~60%.
5. the method according to claim 1 for preparing Wave suction composite material, which is characterized in that the bottom, the centre
The thickness of layer and the top layer is 0.4mm~0.6mm.
6. the method according to claim 1 for preparing Wave suction composite material, which is characterized in that first curing agent, institute
Stating the second curing agent and the third curing agent includes one of polyamide, m-phenylene diamine (MPD) and benzene dimethylamine or more
Kind.
7. the method according to claim 1 for preparing Wave suction composite material, which is characterized in that first diluent and institute
The mass ratio, second diluent and the mass ratio of second resin material and the third for stating the first resin material are dilute
The mass ratio for releasing agent and the third resin material is 2:1~3:1.
8. the method according to claim 1 for preparing Wave suction composite material, which is characterized in that first curing agent is in institute
It is solid to state mass fraction and the third of the mass fraction, second curing agent in bottom coating in the intermediate layer coating
Mass fraction of the agent in the top coat paint is 5%~15%.
9. a kind of Wave suction composite material characterized by comprising
Polyester knitting object；
Bottom is formed on the polyester knitting object, wherein the bottom includes the first resin material and ferrite；
Middle layer is formed on the bottom, wherein the middle layer includes the second resin material and silicon carbide；
Top layer is formed on the middle layer, wherein the top layer includes the second resin material and graphite.
10. Wave suction composite material according to claim 9, which is characterized in that first resin material, second tree
Rouge material and the third resin material include one of epoxy resin, polyester resin, amino resins and polyurethane or more
Kind.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711235701.3A CN109853252A (en) | 2017-11-30 | 2017-11-30 | Wave suction composite material and preparation method thereof |
| PCT/CN2018/083691 WO2019104933A1 (en) | 2017-11-30 | 2018-04-19 | Wave-absorbing composite material and preparation method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711235701.3A CN109853252A (en) | 2017-11-30 | 2017-11-30 | Wave suction composite material and preparation method thereof |
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| CN109853252A true CN109853252A (en) | 2019-06-07 |
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| WO (1) | WO2019104933A1 (en) |
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| CN112029376A (en) * | 2020-08-18 | 2020-12-04 | 集美大学 | High-performance radar composite wave-absorbing coating material and preparation method thereof |
| CN112281503A (en) * | 2020-10-10 | 2021-01-29 | 天津工业大学 | Flexible graphene/barium ferrite composite fabric and preparation method thereof |
| CN112281508A (en) * | 2020-10-26 | 2021-01-29 | 天津工业大学 | Multilayer electromagnetic wave-absorbing textile composite material and preparation method thereof |
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| CN112281503A (en) * | 2020-10-10 | 2021-01-29 | 天津工业大学 | Flexible graphene/barium ferrite composite fabric and preparation method thereof |
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| WO2019104933A1 (en) | 2019-06-06 |
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