CN107286594A - Absorbing material and preparation method thereof - Google Patents
Absorbing material and preparation method thereof Download PDFInfo
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- CN107286594A CN107286594A CN201610200342.7A CN201610200342A CN107286594A CN 107286594 A CN107286594 A CN 107286594A CN 201610200342 A CN201610200342 A CN 201610200342A CN 107286594 A CN107286594 A CN 107286594A
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- resin
- absorbing material
- absorbing
- base material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
- C08L63/10—Epoxy resins modified by unsaturated compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/18—Spheres
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The present invention relates to a kind of absorbing material, including the base material and wave absorbing agent being made up of resin material, it is characterised in that the base material includes bubble, and the bubble is formed by plastic microsphere powder foam, and the wave absorbing agent is dispersed in the base material；By mass parts, the resin is 90 110 parts, and the plastic microsphere powder is 1 30 parts, and the wave absorbing agent is 50 150 parts.The absorbing material that the present invention is provided utilizes plastic microsphere powder foam formation absorbing material, the voidage of bubble is adjustable in absorbing material, and then can realize that the density to absorbing material is adjusted by adjusting the voidage of bubble, and the suction wave frequency rate of absorbing material can also be adjusted by the voidage of bubble and the content of wave absorbing agent.The absorbing material that the present invention is provided has preferable absorbing property and heat resistance.
Description
Technical field
The present invention relates to absorbing material, particularly absorbing material and preparation method thereof.
Background technology
With the development that science and technology is with rapid changepl. never-ending changes and improvements, various technologies and product by medium of electromagnetic wave
More and more, influence of the electromagenetic wave radiation to environment also increasingly increases.Such as, radio wave may
Airport environment can be interfered, cause airplane flight not take off normally；Mobile phone may
Disturb the normal work of various precise electronic medicine equipments；Even common computer, it can also send out
Penetrate the electromagnetic wave for carrying information, it may be received and paid attention to beyond several kilometers, cause national defence,
The leakage of information in terms of politics, economic, science and technology.Therefore, electromagnetic pollution is administered, finds a kind of
It can keep out and weaken the material of electromagenetic wave radiation --- absorbing material, it has also become the one of material science is big
Problem.
Absorbing material is to absorb a class material of the electromagnetic wave energy for projecting its surface, and material is inhaled
Receiving the primary condition of electromagnetic wave is：(1) when electromagnetic wave incident is on material, it can enter to greatest extent
Enter material internal, that is, require that material has matching properties；(2) the electromagnetism wave energy for entering material internal is fast
Fast ground almost all is attenuated, i.e. attenuation characteristic.
Absorbing material can be divided into dielectric type absorbing material and magnetizing mediums type inhales ripple material according to loss mechanism
Material, mainly including ferrite, metal fine powder, barium titanate, carborundum, graphite, conductive fiber,
Nano material, conducting polymer etc..And according to the moulding process of absorbing material, absorbing material can be with
To divide application type and a structural absorbing mater ials, wherein coating-type absorbing materials are main in the form of a paint
In the presence of technique is simple, studies more；And structural absorbing mater ials then have pair for carrying and inhaling ripple
Weight function.Structural absorbing mater ials include the species such as laminate, cellular sandwich, foam core, bubble
The preparation method of foam sandwiched material is typically to mix shape with absorbent with thermoplasticity or thermosetting resin
Resin matrix, is coated in fiber surface formation prepreg, then passes through co-curing with foam core
Formed composite stealthy material, another preparation method be by the foam core with absorbing property with it is general
Logical prepreg co-curing formation foam core type composite stealthy material.
The base material of existing absorbing material has FR-4 materials, ceramic material, ferroelectric material, iron oxygen
Material etc., has some patent documents to disclose using transition metal base aeroge, transiting metal oxidation
Thing aeroge, composite transition metal oxide silica aerogel etc. are as absorbing material, and more typical is to make
The iron-based material realized with iron oxide aeroge.However, FR-4 quality of materials weights, it is impossible to meet very
The demand of " lightweight " under multi-environment.For ferroferric oxide aerogel, if directly as
Absorbing material, wave-absorbing effect is bad；If the ferroferric oxide aerogel is directly reduced into nanometer
Iron, then losing with oxygen in reduction process, network can be collapsed, and nano-pore disappears, and remaining
Iron acted on due to self-field, also easily reunite, thus can not realize the nanosizing of iron with entirely
The lighting of absorbing material.
The content of the invention
In view of this, it is an object of the invention to provide a kind of absorbing material and preparation method thereof, with
Solve technical problem of the prior art.
According to the first aspect of the invention there is provided a kind of absorbing material, including it is made up of resin material
Base material and wave absorbing agent, the base material include bubble, the bubble is by plastic microsphere powder foam shape
Into the wave absorbing agent is dispersed in the base material；By mass parts, the resin is 90-110 parts,
The plastic microsphere powder is 1-30 parts, and the wave absorbing agent is 50-150 parts.
Preferably, the absorbing material is by resin, plastic microsphere powder, wave absorbing agent Hybrid Heating shape
Into.
Preferably, the resin by polyester resin, epoxy resin and phenolic resin, furane resins and
One or more compositions in vinyl ester resin.
Preferably, the resin is polyester resin, and the polyester resin is annular right containing catalyst
Benzene dicarboxylic acid butanediol ester.
Preferably described wave absorbing agent is made up of carbon black and/or metal dust.
Preferably, a diameter of 10-45 μm of the plastic microsphere.
According to the second aspect of the invention there is provided a kind of preparation method of absorbing material, including it is as follows
Step：
Resin, plastic microsphere powder, wave absorbing agent are mixed, are resin 90-110 according to mass fraction
Part, plastic microsphere powder is 1-30 parts, and wave absorbing agent is 50-150 parts, forms mixture；
Mixture is heated at a predetermined temperature and extrusion forming, form base material；
The base material is passed through drying to produce bubble；And
It is cooled to room temperature.
Preferably, the step of mixture formation base material includes：
The mixture is entered in double screw extruder, extruded machine is sufficiently mixed, temperature control is predetermined
Heating-up temperature within, afterwards via extruder special mould extrude, shaping obtain base material.
Preferably, the preset heating temperature is 100-200 DEG C.
Preferably, drying temperature is 180-220 DEG C.
The absorbing material that the present invention is provided inhales ripple using plastic microsphere powder foam formation absorbing material
The voidage of bubble is adjustable in material, and then can be realized by adjusting the voidage of bubble
Density to absorbing material is adjusted, and the suction wave frequency rate of absorbing material can also pass through bubble
Voidage and the content of wave absorbing agent are adjusted.The absorbing material that the present invention is provided has preferable
Absorbing property and heat resistance.
Embodiment
Below in conjunction with several preferred embodiments, the present invention will be described in detail, but not office of the invention
It is limited to these embodiments.
The absorbing material that the present invention is provided, including the base material and wave absorbing agent being made up of resin material, its
In, the base material includes bubble, and the wave absorbing agent is dispersed in the base material.Wherein, ripple material is inhaled
The density of material can be adjusted by the voidage of bubble, and the suction wave frequency rate of absorbing material can be with
Adjusted by least one the voidage of bubble and the content of wave absorbing agent.Bubble is by plastic microsphere powder
End heating expansion is formed.The diameter of the plastic microsphere is preferably 10-45 μm.
The resin can be by polyester resin, epoxy resin and phenolic resin, furane resins and ethene
One or more compositions in base ester resin, it is therefore preferable to polyester resin；The wave absorbing agent can be by
One or more compositions in carbon black, metal dust and iron powder.
Wherein, the absorbing material is thermally formed by mixture, and the key component of mixture includes tree
Fat, plastic microsphere powder and wave absorbing agent, by 90-110 parts of mass parts resin；Plastic microsphere powder
1-30 parts；50-150 parts of wave absorbing agent.
Wherein, polyester resin is the cyclic butylene terephthalate containing catalyst.
The preparation method for the absorbing material that the present invention is provided, comprises the following steps：
Polyester resin, foam microspheres powder, wave absorbing agent are mixed, mixture is formed；
By mixture heating and extrusion forming, base material is formed；
The base material is passed through drying to produce bubble；And
It is cooled to room temperature.
Preferably, polyester resin can be by epoxy resin and phenolic resin, furane resins or vinyl
Ester resin is substituted.
Preferably, the step of forming the base material includes；
The mixed material of stating is added in double screw extruder, extruded machine is sufficiently mixed, temperature control
Within predetermined heating-up temperature, extruded afterwards via extruder special mould, shaping obtains base material.
Wherein, predetermined heating-up temperature can make the mixture be melt blending state.Polyester tree
Fat can be cyclic butylene terephthalate, also, the mixture includes catalyst.Dry
Dry step is carried out in 180-220 DEG C of baking oven, and drying time is 20-40min.
Embodiment 1
By CBT160 polyester resin (containing catalyst) 1000g, plastic microsphere F-230D (Japan
Loose our company) 20g, wave absorbing agent carbon black VULCAN XC72 500g be under predetermined heating-up temperature
Melt blending is extruded, and base material is made, it is preferable that the heating-up temperature of the reservation is 150 DEG C.
In the baking oven that base material is put into 200 DEG C, foamable 30min is subsequently cooled to room temperature system
Standby absorbing material.
Wherein, the density for the absorbing material that the present embodiment is prepared is 510kg/m3, heat distortion temperature
For 160-200 DEG C, and the absorbing material has good suction ripple in 2-18GHz frequency range
Performance, reflectivity R≤- 10dB frequency range is 8GHz；It is in 9-13GHz frequency range internal reflections
Rate R≤- 16dB, in 14-17GHz frequency range internal reflection rates R≤- 17dB, maximum reflectivity
At 15GHz, R is -31dB.
Embodiment 2
By CBT160 polyester resin (containing catalyst) 1000g, plastic microsphere F-230D (Japan
Loose our company) 50g, wave absorbing agent carbon black VULCAN XC72 500g be under predetermined heating-up temperature
Melt blending is extruded, and base material is made, it is preferable that the heating-up temperature of the reservation is 150 DEG C.
In the baking oven that base material is put into 200 DEG C, foamable 30min is subsequently cooled to room temperature system
Standby absorbing material.
Wherein, the density of absorbing material manufactured in the present embodiment is 281kg/m3, heat distortion temperature is
160-200 DEG C, and the absorbing material has good wave absorbtion in 2-18GHz frequency range
Can, reflectivity R≤- 10dB frequency range is 10GHz；It is in 8-13GHz frequency range internal reflections
Rate R≤- 17dB, in 14-17GHz frequency range internal reflection rates R≤- 22dB, maximum reflectivity
At 16GHz, R is -31dB.
Embodiment 3
By CBT160 polyester resin (containing catalyst) 1000g, plastic microsphere F-230D (Japan
Loose our company) 50g, wave absorbing agent carbon black VULCAN XC72 1000g be in predetermined heating-up temperature
Lower melt blending extrusion, is made base material, it is preferable that the heating-up temperature of the reservation is 150 DEG C.
In the baking oven that base material is put into 200 DEG C, foamable 30min is subsequently cooled to room temperature system
Standby absorbing material.
Wherein, the density of absorbing material manufactured in the present embodiment is 207kg/m3, heat distortion temperature is
160-200 DEG C, and the absorbing material has good wave absorbtion in 2-18GHz frequency range
Can, reflectivity R≤- 10dB frequency range is 15GHz；It is in 8-12GHz frequency range internal reflections
Rate R≤- 18dB, in 13-15GHz frequency range internal reflection rates R≤- 27dB, maximum reflectivity
At 14GHz, R is -38dB.
Bubble in the absorbing material that the present invention is provided is formed by the heating expansion of plastic microsphere powder.Its
In, the density of absorbing material is adjusted by the voidage of bubble, and the frequency of absorbing material can
To be adjusted by least one content of the voidage of bubble and wave absorbing agent.The suction ripple material of the present invention
The absorbing property of material is good, and heat resistance is good.
It should be noted that herein, term " comprising ", "comprising" or its any other
Variant is intended to including for nonexcludability, so that process, method including a series of key elements,
Article or equipment not only include those key elements, but also other key elements including being not expressly set out,
Either also include for this process, method, article or the intrinsic key element of equipment.Do not having
In the case of more limitations, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate institute of the present invention
The citing of work, and the not restriction to embodiment.Come for those of ordinary skill in the art
Say, can also make other changes in different forms on the basis of the above description.Here
There is no need to be exhaustive to all embodiments.And thus amplify out it is obvious
Among change or variation are still in protection scope of the present invention.
Claims (10)
1. a kind of absorbing material, including the base material and wave absorbing agent being made up of resin material, its feature exist
In the base material includes bubble, and the bubble is formed by plastic microsphere powder foam, the suction ripple
Agent is dispersed in the base material；By mass parts, the resin is 90-110 parts, the plastic microsphere
Powder is 1-30 parts, and the wave absorbing agent is 50-150 parts.
2. absorbing material according to claim 1, it is characterised in that the absorbing material by
Resin, plastic microsphere powder, wave absorbing agent Hybrid Heating are formed.
3. absorbing material according to claim 2, it is characterised in that the resin is by polyester
One or more in resin, epoxy resin and phenolic resin, furane resins and vinyl ester resin
Constitute.
4. absorbing material according to claim 3, it is characterised in that the resin is polyester
Resin, the polyester resin is the cyclic butylene terephthalate containing catalyst.
5. absorbing material according to claim 2, it is characterised in that the wave absorbing agent is by carbon
Black and/or metal dust is constituted.
6. absorbing material according to claim 1, it is characterised in that the plastic microsphere
A diameter of 10-45 μm.
7. a kind of preparation method of absorbing material, it is characterised in that comprise the following steps：
Resin, plastic microsphere powder, wave absorbing agent are mixed, are resin 90-110 according to mass fraction
Part, plastic microsphere powder is 1-30 parts, and wave absorbing agent is 50-150 parts, forms mixture；
Mixture is heated at a predetermined temperature and extrusion forming, form base material；
The base material is passed through drying to produce bubble；And
It is cooled to room temperature.
8. preparation method according to claim 7, it is characterised in that the mixture is formed
The step of base material, includes：
The mixture is entered in double screw extruder, extruded machine is sufficiently mixed, temperature control is predetermined
Heating-up temperature within, afterwards via extruder special mould extrude, shaping obtain base material.
9. preparation method according to claim 7, it is characterised in that the predetermined heat temperature
Spend for 100-200 DEG C.
10. preparation method according to claim 7, it is characterised in that drying temperature is
180-220℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610200342.7A CN107286594A (en) | 2016-03-31 | 2016-03-31 | Absorbing material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610200342.7A CN107286594A (en) | 2016-03-31 | 2016-03-31 | Absorbing material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN107286594A true CN107286594A (en) | 2017-10-24 |
Family
ID=60087240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610200342.7A Pending CN107286594A (en) | 2016-03-31 | 2016-03-31 | Absorbing material and preparation method thereof |
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| Country | Link |
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| CN (1) | CN107286594A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396275A (en) * | 2019-08-20 | 2019-11-01 | 成都玉龙化工有限公司 | A kind of melamine foam absorbing material and preparation method thereof |
| CN111253715A (en) * | 2020-02-17 | 2020-06-09 | 宁国市千洪电子有限公司 | High-elasticity conductive foam and preparation method thereof |
| CN114801336A (en) * | 2022-04-02 | 2022-07-29 | 芜湖创联新材料科技有限公司 | Wave-absorbing honeycomb capable of preventing surface cracking and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396275A (en) * | 2019-08-20 | 2019-11-01 | 成都玉龙化工有限公司 | A kind of melamine foam absorbing material and preparation method thereof |
| CN111253715A (en) * | 2020-02-17 | 2020-06-09 | 宁国市千洪电子有限公司 | High-elasticity conductive foam and preparation method thereof |
| CN114801336A (en) * | 2022-04-02 | 2022-07-29 | 芜湖创联新材料科技有限公司 | Wave-absorbing honeycomb capable of preventing surface cracking and preparation method thereof |
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Application publication date: 20171024 |