CN106519471A - Wave absorbing material and preparation method thereof - Google Patents
Wave absorbing material and preparation method thereof Download PDFInfo
- Publication number
- CN106519471A CN106519471A CN201610947347.6A CN201610947347A CN106519471A CN 106519471 A CN106519471 A CN 106519471A CN 201610947347 A CN201610947347 A CN 201610947347A CN 106519471 A CN106519471 A CN 106519471A
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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
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
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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
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention relates to a wave absorbing material and a preparation method thereof. The wave absorbing material is formed by expanded polystyrene wrapped with wrapping liquid through mold pressing. The wrapping liquid is composed of, by weight, 40-45% of water, 0.8-1.2% of dispersing agents, 1-2% of acetylene black, 6-7% of aluminum hydroxide, 4-5% of ammonium polyphosphate, 5-6% of expanded graphite, and 36.2-40.8% of acrylic elastic emulsion. The wave absorbing material is a hard material and is firm in structure, good in mechanical performance and high in tensile strength, and drooped tips are avoided.
Description
Technical field
The present invention relates to a kind of absorbing material and preparation method thereof.
Background technology
At present, the absorbing material that domestic microwave dark room is adopted mainly has：Polyurethane sponge absorbing material and non-woven fabrics inhale ripple
Material.Polyurethane sponge absorbing material is that the series of processes such as impregnated wave absorbing agent, fire retardant, surface spraying coating are processed into
, because wave absorbing agent and fire retardant are adsorbed in polyurethane foam hole by impregnation process, wave absorbing agent and fire retardant are with making
It is easy to fall off with the increase of the time limit, environmental pollution is caused, performance is affected；And because：Polyurethane sponge belongs to open pore,
Easily the moisture absorption, causes absorbing property to decline.In addition, polyurethane sponge is soft structures, it is squeezed after cutting, the factor chi such as moisture
It is very little to be susceptible to change, it is impossible to ensure that apparent size is completely the same.Non-woven fabrics absorbing material is coated, impression, folding, assembling
It is processed into etc. operation, because complicated process of preparation needs more labour, low production efficiency；Again because of manual work
Sequence is more, apparent size uniformity it cannot be guaranteed that, for a long time using coming off for absorbent and fire retardant is also easily caused, pollute ring
Border, affects performance.
The content of the invention
The present invention is by by material based on expanded polystyrene (EPS), wrapping up in deposited conductive agent, fire retardant and adhesive etc., then
Jing compression moldings, obtain that apparent size is completely the same, nonhygroscopic, do not fall carbon, the absorbing material of the point that do not hang down.
The invention provides a kind of absorbing material, the absorbing material is wrapped up in the expanded polystyrene (EPS) molding of dressing liquid by cladding
Shaping；
It is described to wrap up in dressing liquid, by weight percentage, it is made up of following components：
It is 35 that expanded polystyrene (EPS) of the present invention is preferably flame retardant rating for B1 levels, limited oxygen index；
The density of the polystyrene after pre- is 20kg/m3, particle diameter be 0.8-1mm.
Another object of the present invention is providing the preparation method of above-mentioned absorbing material, the preparation method comprises the steps：
1. predetermined weight percent is pressed, by dispersant, acetylene carbon black, aluminium hydroxide, APP and expanded graphite successively
It is added to the water, mixes for the first time, add elastic pure-acrylic emulsion, second mixing obtains wrapping up in dressing liquid；
2. will wrap up in the polystyrene that dressing liquid is added to after pre-, third time is mixed, air-dry, compression molding obtains inhaling ripple
Material.
The condition that first time of the present invention mixes is preferably：Mixing speed is 1000-2000r/min, and mixing time is
60-120min。
The condition for mixing for second of the present invention is preferably：Mixing speed is 300-400r/min, and mixing time is 30-
60min。
The condition that third time of the present invention is mixed is preferably：Mixing speed is 300-400r/min, and mixing time is 20-
30min。
Polystyrene after pre- of the present invention and the weight ratio preferably 100 for wrapping up in dressing liquid：70-90.
Air-dried condition of the present invention is preferably：Air-dried temperature is 25-30 DEG C, and air-dry time is 40-60min.
The condition of compression molding of the present invention is preferably：Briquetting pressure is 0.7-0.9kg/cm2, the heat time is 180-
300s, cool time are 240-360s.
The present invention has the beneficial effect that：
1. the absorbing material that prepared by the present invention is hard material, and sound construction, good mechanical property, tensile strength height, nothing hang down
Point manifests；
2. the absorbing material excellent fireproof performance that prepared by the present invention, flame retardant rating are GB8624B1 levels, and limited oxygen index is
35；
3. the present invention prepare absorbing material is lightweight, density is little, be that the polyurethane foam of same size solid inhales ripple material
The half of material weight；
4. the present invention prepare absorbing material be hole-closing structure, nonhygroscopic water suction, it is not scaling-off fall carbon, it is without airborne dust drawback, clean
Net performance is good；
5. the absorbing material ageing-resistant performance that prepared by the present invention is good, and product has the life cycle of overlength, and service life is not
Less than 40 years.
Description of the drawings
2 width of accompanying drawing of the present invention,
Fig. 1 is the structural representation of absorbing material prepared by embodiment 1；
Fig. 2 is the reflectance test curve of absorbing material prepared by embodiment 1.
Specific embodiment
Following non-limiting examples can make one of ordinary skill in the art be more fully understood the present invention, but not with
Any mode limits the present invention.
Embodiment 1
A kind of preparation method of absorbing material, the preparation method comprise the steps：
By weight percentage, by the acetylene carbon black of 1% dispersant 2100,1.5%, 6.5% aluminium hydroxide, 4.5%
The degree of polymerization be that 1000 APP and 5.5% expanded graphite are added sequentially in 43.5% water, 1000r/min stirring
60min, adds 37.5% elastic pure-acrylic emulsion, and 300r/min stirring 30min obtain wrapping up in dressing liquid；
To wrap up in the polystyrene that dressing liquid is added to after pre- by the 80% of polystyrene weight, 300r/min stirrings
20min, 25 DEG C of air-dried 40min, carry out compression molding by mould, and briquetting pressure is 0.8kg/cm2, the heat time is 250s,
Cool time is 300s；Compression molding is pedestal and pyramid, and pyramid is fixed on base, absorbing material is obtained.
Above-mentioned absorbing material adopts modularized design, is combined with detachable pyramid by pedestal, is easily installed, safeguards
And replacing, apparent size uniformity is good, and pyramid orientation can be horizontal or vertical, improve reflectivity by adjustment angle
Can, so as to greatly improve wave-absorbing effect；Above-mentioned absorbing material is autologous closed, without airborne dust drawback, clean excellent, complies fully with
ISO14644-1class4 clean room standards (10.000 grades)；The product life cycle of above-mentioned absorbing material overlength, service life
More than 40 years.Polyurethane sponge absorbing material is solved because from the great point that easily hangs down, falling Carbon dust pollution environment, affecting performance, use
The problem of short life.
Claims (9)
1. a kind of absorbing material, it is characterised in that：The absorbing material is molded into by the expanded polystyrene (EPS) that cladding wraps up in dressing liquid
Type；
It is described to wrap up in dressing liquid, by weight percentage, it is made up of following components：
2. absorbing material according to claim 1, it is characterised in that：The flame retardant rating of the expanded polystyrene (EPS) is B1
Level, limited oxygen index are 35；
The density of the polystyrene after pre- is 20kg/m3, particle diameter be 0.8-1mm.
3. the preparation method of absorbing material described in claim 1 or 2, it is characterised in that：The preparation method comprises the steps：
1. predetermined weight percent is pressed, dispersant, acetylene carbon black, aluminium hydroxide, APP and expanded graphite is sequentially added
To in water, mix for the first time, add elastic pure-acrylic emulsion, second mixing obtains wrapping up in dressing liquid；
2. will wrap up in the polystyrene that dressing liquid is added to after pre-, third time is mixed, air-dry, compression molding obtains inhaling ripple material
Material.
4. preparation method according to claim 3, it is characterised in that：The condition that first time mixes is：Mixing speed
For 1000-2000r/min, mixing time is 60-120min.
5. preparation method according to claim 4, it is characterised in that：Described second condition for mixing is：Mixing speed
For 300-400r/min, mixing time is 30-60min.
6. preparation method according to claim 5, it is characterised in that：The condition that the third time is mixed is：Mixing speed
For 300-400r/min, mixing time is 20-30min.
7. preparation method according to claim 6, it is characterised in that：Polystyrene after described pre- with wrap up in dressing liquid
Weight ratio is 100：70-90.
8. preparation method according to claim 7, it is characterised in that：The air-dried condition is：Air-dried temperature is 25-30
DEG C, air-dry time is 40-60min.
9. preparation method according to claim 8, it is characterised in that：The condition of the compression molding is：Briquetting pressure is
0.7-0.9kg/cm2, the heat time is 180-300s, and cool time is 240-360s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610947347.6A CN106519471A (en) | 2016-10-26 | 2016-10-26 | Wave absorbing material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610947347.6A CN106519471A (en) | 2016-10-26 | 2016-10-26 | Wave absorbing material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106519471A true CN106519471A (en) | 2017-03-22 |
Family
ID=58292547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610947347.6A Pending CN106519471A (en) | 2016-10-26 | 2016-10-26 | Wave absorbing material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106519471A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106947349A (en) * | 2017-04-06 | 2017-07-14 | 南京南大波平电子信息有限公司 | A kind of aqueous honeycomb Wave suction composite material and preparation method thereof |
| CN107417948A (en) * | 2017-06-14 | 2017-12-01 | 大连东信微波技术有限公司 | A kind of absorbing material and preparation method thereof |
| CN110790978A (en) * | 2019-11-06 | 2020-02-14 | 大连东信微波技术有限公司 | Wave-absorbing material, preparation method and equipment |
| CN117050378A (en) * | 2023-10-13 | 2023-11-14 | 中汽研汽车检验中心（天津）有限公司 | Millimeter wave absorbing material for ADAS (advanced automatic analysis system) test and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04356543A (en) * | 1991-05-17 | 1992-12-10 | Kanegafuchi Chem Ind Co Ltd | Conductive and dielectric thermoplastic resin particle, foam made therefrom, and its production |
| CN1909115A (en) * | 2006-08-16 | 2007-02-07 | 南京南大波平电子信息有限公司 | Flame resisting wave-absorbing material and method for making same |
| CN101552044A (en) * | 2009-04-17 | 2009-10-07 | 南京南大波平电子信息有限公司 | Electromagnetic wave absorbing material used for EMC electric wave darkroom and preparation method thereof |
| CN103408788A (en) * | 2013-08-06 | 2013-11-27 | 南京洛普电子工程研究所 | Flame-retardance wave-absorbing polystyrene foam material and preparation method thereof |
| CN104312352A (en) * | 2014-11-20 | 2015-01-28 | 大连东信微波技术有限公司 | Flame-retardant coating capable of sealing holes of perforated polymeric sponge wave-absorbing material and hole-sealed polymeric sponge wave-absorbing material prepared with flame-retardant coating |
| CN104610816A (en) * | 2014-12-31 | 2015-05-13 | 大连东信微波技术有限公司 | Outdoor waterproof weather-proof wave-absorbing material and preparation method thereof |
-
2016
- 2016-10-26 CN CN201610947347.6A patent/CN106519471A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04356543A (en) * | 1991-05-17 | 1992-12-10 | Kanegafuchi Chem Ind Co Ltd | Conductive and dielectric thermoplastic resin particle, foam made therefrom, and its production |
| CN1909115A (en) * | 2006-08-16 | 2007-02-07 | 南京南大波平电子信息有限公司 | Flame resisting wave-absorbing material and method for making same |
| CN101552044A (en) * | 2009-04-17 | 2009-10-07 | 南京南大波平电子信息有限公司 | Electromagnetic wave absorbing material used for EMC electric wave darkroom and preparation method thereof |
| CN103408788A (en) * | 2013-08-06 | 2013-11-27 | 南京洛普电子工程研究所 | Flame-retardance wave-absorbing polystyrene foam material and preparation method thereof |
| CN104312352A (en) * | 2014-11-20 | 2015-01-28 | 大连东信微波技术有限公司 | Flame-retardant coating capable of sealing holes of perforated polymeric sponge wave-absorbing material and hole-sealed polymeric sponge wave-absorbing material prepared with flame-retardant coating |
| CN104610816A (en) * | 2014-12-31 | 2015-05-13 | 大连东信微波技术有限公司 | Outdoor waterproof weather-proof wave-absorbing material and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106947349A (en) * | 2017-04-06 | 2017-07-14 | 南京南大波平电子信息有限公司 | A kind of aqueous honeycomb Wave suction composite material and preparation method thereof |
| CN107417948A (en) * | 2017-06-14 | 2017-12-01 | 大连东信微波技术有限公司 | A kind of absorbing material and preparation method thereof |
| CN110790978A (en) * | 2019-11-06 | 2020-02-14 | 大连东信微波技术有限公司 | Wave-absorbing material, preparation method and equipment |
| CN110790978B (en) * | 2019-11-06 | 2022-03-11 | 大连东信微波技术有限公司 | Wave-absorbing material, preparation method and equipment |
| CN117050378A (en) * | 2023-10-13 | 2023-11-14 | 中汽研汽车检验中心（天津）有限公司 | Millimeter wave absorbing material for ADAS (advanced automatic analysis system) test and preparation method thereof |
| CN117050378B (en) * | 2023-10-13 | 2024-02-13 | 中汽研汽车检验中心（天津）有限公司 | Millimeter wave absorbing material for ADAS (advanced automatic analysis system) test and preparation method thereof |
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Application publication date: 20170322 |