CN105949630A - Shielding material for vehicle-borne front radars and preparation method of shielding material - Google Patents
Shielding material for vehicle-borne front radars and preparation method of shielding material Download PDFInfo
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- CN105949630A CN105949630A CN201610348259.4A CN201610348259A CN105949630A CN 105949630 A CN105949630 A CN 105949630A CN 201610348259 A CN201610348259 A CN 201610348259A CN 105949630 A CN105949630 A CN 105949630A
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- parts
- shielding material
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- absorbent
- rubber
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- C—CHEMISTRY; METALLURGY
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- 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
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K3/08—Metals
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K3/08—Metals
- C08K2003/0856—Iron
-
- C—CHEMISTRY; METALLURGY
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
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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)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention relates to the field of wave-absorbing materials for electromagnetic wave radiation protection, and discloses a shielding material for vehicle-borne front radars. The shielding material comprises, by mass, 55-65 parts of absorbent, 25-35 parts of rubber base material, 2-4 parts of vulcanizer, 3-5 parts of anti-aging agent and 1-3 parts of water-proofing agent, wherein the absorbent is carbonyl iron powder, conductive carbon black or ferrite. The invention further provides a preparation method of the shielding material for the vehicle-borne front radars. The preparation method includes: evenly mixing, by mass, 55-65 parts of absorbent, 25-35 parts of rubber base material, 2-4 parts of vulcanizer, 3-5 parts of anti-aging agent and 1-3 parts of water-proofing agent in an open mill prior to plastication, mixing and calendering to obtain a sheet 0.5-1.5mm in thickness; putting the sheet in a press vulcanizer for heating at the temperature of 135-160 DEG C and under the pressure of 10MPa-20Mpa for 6-30min to obtain the shielding material. The shielding material can effectively absorb electromagnetic interference waves.
Description
Technical field
The present invention relates to the absorbing material field of electromagenetic wave radiation protection, be specifically related to a kind of for
The shielding material of vehicle-mounted preposition radar and the system of a kind of shielding material for vehicle-mounted preposition radar
Preparation Method.
Background technology
Vehicle-mounted preposition radar is the miniradar of a kind of Highgrade integration, is generally mounted to automobile
On front bumper, for exploring those, less than bumper, driver is difficult to the obstacle seen in car
Thing, and in the way of sound or image, inform the situation of driver's peripheral obstacle, it is automobile
Safety aid when parking or move backward, effective low help driver cleared away blind area or
The defect of blind area, improves the safety of driving.
Vehicle-mounted preposition radar includes a transmitting antenna and two reception antennas, and three antenna set
Become on same wiring board, during the work of vehicle-mounted preposition radar, between dual-mode antenna, form physical field,
And producing coupling, forming frequency is the electromagnetic interference wave of 22GHz～26GHz, and impact connects
Working sensitivity and the detection of receiving antenna identify distance, and the traveling of vehicle is brought unnecessary peace
Full hidden danger.
Summary of the invention
For defect present in prior art, it is an object of the invention to provide a kind of for car
Carry shielding material and the preparation of a kind of shielding material for vehicle-mounted preposition radar of preposition radar
Method, it is possible to effectively absorb electromagnetic interference wave, improves the stability of vehicle-mounted preposition radar work.
For reaching object above, the present invention adopts the technical scheme that: by mass parts, described screen
Cover material by 55～65 parts of absorbent, 25～35 parts of rubber substrates, 2～4 parts of vulcanizing agents, 3～
5 parts of age resistor and 1～3 part of waterproofing agent composition, described absorbent is carbonyl iron dust, conduction charcoal
Black or ferrite.
On the basis of technique scheme, described rubber substrate is butyl rubber, EPDM
Rubber or nitrile rubber.
On the basis of technique scheme, described age resistor is 2,2,4-trimethyl-1,2-
Dihydroquinoline polymer.
On the basis of technique scheme, described waterproofing agent is polycarbodiimide.
On the basis of technique scheme, by mass parts, described shielding material is by 57～60
Part absorbent, 32～34 parts of rubber substrates, 2～4 parts of vulcanizing agents, 3～4 parts of age resistor and 1～
2 parts of waterproofing agent compositions.
On the basis of technique scheme, by mass parts, described shielding material is by 58 parts of suctions
Receive agent, 33 parts of rubber substrates, 4 parts of vulcanizing agents, 3 parts of age resistor and 2 parts of waterproofing agent compositions.
The present invention also provides for the preparation method of a kind of shielding material for vehicle-mounted preposition radar, bag
Include following steps: by mass parts, by 55～65 parts of absorbent, 25～35 parts of rubber substrates,
2～4 parts of vulcanizing agents, 3～5 parts of age resistor and 1～3 part of waterproofing agent mix homogeneously in mill
After, carry out plasticating, mixing and calendering, obtain the sheet material that thickness is 0.8mm～1.5mm；Will
Described sheet material is positioned in vulcanizing press, temperature be 135 DEG C～160 DEG C, pressure be
Heat 6min～30min under conditions of 10MPa～20Mpa, obtain shielding material.
On the basis of technique scheme, the thickness of described shielding material be 0.5mm～
1mm。
On the basis of technique scheme, described shielding material is 22GHz's～26GHz
In frequency range, the reflectance of electromagnetic wave is less than-20dB.
Compared with prior art, it is an advantage of the current invention that:
(1) the vehicle-mounted preposition radar shielding material of the present invention is to 22GHz～26GHz frequency range
In electromagnetic wave have a good Absorption, the lowest avoid between vehicle-mounted preposition radar transmit-receive antenna
The interference worked vehicle-mounted preposition radar because of the electromagnetic interference wave of coupling generation, improves vehicle-mounted
The job stability of preposition radar, strengthens the driving safety of vehicle.
(2) rubber substrate that the vehicle-mounted preposition radar shielding material of the present invention uses is nothing
Halogen rubber, more environmental protection.
(3) thickness of the vehicle-mounted preposition radar shielding material of the present invention is 0.5mm～1mm,
It is prone to cutting, it is possible to use on various baroque vehicle-mounted preposition radars, applied range.
(4) temperature be 135 DEG C～160 DEG C, under conditions of pressure is 10MPa～20Mpa
Sheet material is heated 6min～30min, prepares the shielding material of the present invention, to 22GHz～26GHz
Electromagnetic wave in frequency range has good Absorption.
Detailed description of the invention
Hereinafter the present invention is described in further detail.
The present invention provides a kind of shielding material for vehicle-mounted preposition radar, and this shielding material is sheet
Shape structure, is placed between trailer-mounted radar chip and its pedestal.By mass parts, this shielding material
By 55～65 parts of absorbent, 25～35 parts of rubber substrates, 2～4 parts of vulcanizing agents, 3～5 parts
Age resistor and 1～3 part of waterproofing agent composition.
Preferably, by mass parts, this shielding material by 57～60 parts of absorbent, 32～34 parts
Rubber substrate, 2～4 parts of vulcanizing agents, 3～4 parts of age resistor and 1～2 part of waterproofing agent composition.
The embodiment of the present invention also provides for a kind of preferable shielding material of effect: by mass parts, shielding
Material is by 58 parts of absorbent, 33 parts of rubber substrates, 4 parts of vulcanizing agents, 3 parts of age resistor and 2
Part waterproofing agent composition.
In the present embodiment, absorbent is carbonyl iron dust, conductive black or ferrite；Rubber substrate
For butyl rubber, ethylene propylene diene rubber or nitrile rubber；Age resistor is 2,2,4-trimethyl-1,
2-dihydroquinoline polymer；Waterproofing agent is polycarbodiimide；Vulcanizing agent is rubber vulcanizing agent.
The shielding material of the present invention reflectance to the electromagnetic wave in 22GHz～26GHz frequency range
Less than-20dB, thus the electromagnetic wave in 22GHz～26GHz frequency range is had and well absorbs work
With such that it is able to sponge the electromagnetic interference produced because of coupling between dual-mode antenna well
Ripple, improves the job stability of vehicle-mounted preposition radar, strengthens the driving safety of vehicle；And this material
The rubber substrate that material uses is halide-free rubber, more environmental protection.
The present invention also provides for the preparation method of a kind of vehicle-mounted preposition radar shielding material, in order to right
Above-mentioned vehicle-mounted preposition radar shielding material is prepared, and concrete comprises the following steps: by matter
Amount part, by 55～65 parts of absorbent, 25～35 parts of rubber substrates, 2～4 parts of vulcanizing agents, 3～
5 parts of age resistor and 1～3 part of waterproofing agent mix homogeneously in mill, and plasticate, mixing and
Calendering, obtains the sheet material that thickness is 0.8mm～1.5mm；Sheet material is positioned over vulcanizing press
In, temperature be 135 DEG C～160 DEG C, pressure be 10MPa～20Mpa under conditions of heat
6min～30min, obtains the shielding material that thickness is 0.5mm～1mm.
Below by way of 6 embodiments, the shielding material of the present invention is specifically described.
Embodiment one
In terms of mass parts, by the carbonyl iron dusts of 65 parts, the butyl rubber of 28 parts, the sulfur of 3 parts
The waterproofing agent of agent, the age resistor of 3 parts and 1 part mixes 30min in mill, and plasticate,
Mixing and calendering, obtain the sheet material that thickness is 0.8mm；The sheet material that thickness is 0.8mm is put
It is placed in vulcanizing press, under conditions of temperature 160 DEG C, pressure 10MPa, heats 30min
The shielding material of the present invention that thickness is 0.5mm.
Embodiment two
In terms of mass parts, by the ferrites of 63 parts, the ethylene propylene diene rubber of 28 parts, 3 parts
The waterproofing agent of vulcanizing agent, the age resistor of 4 parts and 2 parts mixes 30min in mill, and moulds
Refining, mixing and calendering, obtain the sheet material that thickness is 0.9mm；It is the sheet of 0.9mm by thickness
Material is positioned in vulcanizing press, heats under conditions of temperature 160 DEG C, pressure 10MPa
30min the shielding material of the present invention that thickness is 0.6mm.
Embodiment three
In terms of mass parts, by the conductive blacks of 60 parts, the nitrile rubber of 32 parts, the sulfur of 2 parts
The waterproofing agent of agent, the age resistor of 4 parts and 2 parts mixes 30min in mill, and plasticate,
Mixing and calendering, obtain the sheet material that thickness is 1.0mm；The sheet material that thickness is 1.0mm is put
It is placed in vulcanizing press, under conditions of temperature 160 DEG C, pressure 10MPa, heats 30min
The shielding material of the present invention that thickness is 0.7mm.
Embodiment four
In terms of mass parts, by the carbonyl iron dusts of 58 parts, the butyl rubber of 33 parts, the sulfur of 4 parts
The waterproofing agent of agent, the age resistor of 3 parts and 2 parts mixes 30min in mill, and plasticate,
Mixing and calendering, obtain the sheet material that thickness is 0.8mm；The sheet material that thickness is 0.8mm is put
It is placed in vulcanizing press, under conditions of temperature 160 DEG C, pressure 10MPa, heats 30min
The shielding material of the present invention that thickness is 0.8mm.
Embodiment five
In terms of mass parts, by the ferrite powders of 57 parts, the ethylene propylene diene rubber of 34 parts, 2 parts
The waterproofing agent of vulcanizing agent, the age resistor of 5 parts and 2 parts in mill, mix 30min, and
Plasticate, mixing and calendering, obtain the sheet material that thickness is 1.2mm；It is 1.2mm's by thickness
Sheet material is positioned in vulcanizing press, heats under conditions of temperature 160 DEG C, pressure 10MPa
30min the shielding material of the present invention that thickness is 0.9mm.
Embodiment six
In terms of mass parts, by the conductive black absorbent of 55 parts, the nitrile rubber of 35 parts, 4
The waterproofing agent of vulcanizing agent, the age resistor of 4 parts and 2 parts of part mixes 30min in mill,
And plasticate, mixing and calendering, obtain the sheet material that thickness is 1.3mm；It is 1.3mm by thickness
Sheet material be positioned in vulcanizing press, add under conditions of temperature 160 DEG C, pressure 10MPa
Hot 30min the shielding material of the present invention that thickness is 1.0mm.
In the frequency range of 22GHz～26GHz, the shielding material that embodiment one to six is prepared
Carrying out the test of reflection of electromagnetic wave rate performance, test result is as described in Table 1, wherein, and electromagnetic wave
The examination criteria of reflectance is: GJB2038A-2011 " radar absorbing reflectance test side
Method ".
Table 1
In table 1, sequence number 1～6 represents the shielding material that embodiment one to six prepares respectively, example:
Sequence number 1 represents the shielding material that embodiment one prepares.
As shown in Table 1: according to the preparation method of the vehicle-mounted preposition radar shielding material of the present invention
The shielding material that the different materials proportioning be given is made, in the frequency range of 22GHz～26GHz,
The reflectance of electromagnetic wave is below-20dB, thus illustrates that the vehicle-mounted preposition radar of the present invention is used
Shielding material has shielding action well to electromagnetic interference wave in the frequency range of 22GHz～26GHz；
Along with in shielding material, absorbent proportioning reduces, the maximum reflection of corresponding shielding material takes the lead in subtracting
Few, increase afterwards, i.e. take the lead in the absorption of electromagnetic wave in the frequency range of 22GHz～26GHz increasing,
Rear minimizing, the shielding material that embodiment four prepares in the frequency range of 22GHz～26GHz to electricity
The shielding material that the absolute value of the maximum reflectivity of magnetic wave prepares relative to other embodiments is
Big reflectance is maximum, i.e. the assimilation effect to electromagnetic wave can reach optimum, and embodiment four is made
Shielding material to the electromagnetic wave of two end points frequencies of the frequency range of 22GHz～26GHz
Assimilation effect is also preferable, therefore in parts by mass, the carbonyl iron dust of 58 parts, the butyl rubber of 33 parts
The waterproofing agent of glue, the vulcanizing agent of 4 parts, the age resistor of 3 parts and 2 parts is shielding material of the present invention
Optimum proportioning.
The present invention is not limited to above-mentioned embodiment, for those skilled in the art
For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications,
Within these improvements and modifications are also considered as protection scope of the present invention.This specification is not made in detail
The content described belongs to prior art known to professional and technical personnel in the field.
Claims (9)
1. the shielding material for vehicle-mounted preposition radar, it is characterised in that: by mass parts,
Described shielding material is by 55～65 parts of absorbent, 25～35 parts of rubber substrates, 2～4 parts of sulfurations
Agent, 3～5 parts of age resistor and 1～3 part of waterproofing agent composition, described absorbent be carbonyl iron dust,
Conductive black or ferrite.
A kind of shielding material for vehicle-mounted preposition radar, its
It is characterised by: described rubber substrate is butyl rubber, ethylene propylene diene rubber or nitrile rubber.
A kind of shielding material for vehicle-mounted preposition radar, its
It is characterised by: described age resistor is 2,2,4-trimethyl-1,2-dihydroquinoline polymer.
A kind of shielding material for vehicle-mounted preposition radar, its
It is characterised by: described waterproofing agent is polycarbodiimide.
A kind of shielding material for vehicle-mounted preposition radar, its
Be characterised by: by mass parts, described shielding material by 57～60 parts of absorbent, 32～34 parts
Rubber substrate, 2～4 parts of vulcanizing agents, 3～4 parts of age resistor and 1～2 part of waterproofing agent composition.
A kind of shielding material for vehicle-mounted preposition radar, its
Be characterised by: by mass parts, described shielding material by 58 parts of absorbent, 33 parts of rubber substrates,
4 parts of vulcanizing agents, 3 parts of age resistor and 2 parts of waterproofing agent compositions.
7. the shielding for vehicle-mounted preposition radar as described in any one of claim 1～6
The preparation method of material, it is characterised in that comprise the following steps:
By mass parts, by 55～65 parts of absorbent, 25～35 parts of rubber substrates, 2～4 parts of sulfur
Agent, 3～5 parts of age resistor and 1～3 part of waterproofing agent after mix homogeneously, are carried out in mill
Plasticate, mixing and calendering, obtain the sheet material that thickness is 0.8mm～1.5mm；By described sheet material
Be positioned in vulcanizing press, temperature be 135 DEG C～160 DEG C, pressure be 10MPa～
Heat 6min～30min under conditions of 20Mpa, obtain shielding material.
A kind of system of the shielding material for vehicle-mounted preposition radar
Preparation Method, it is characterised in that: the thickness of described shielding material is 0.5mm～1mm.
A kind of system of the shielding material for vehicle-mounted preposition radar
Preparation Method, it is characterised in that: described shielding material in the frequency range of 22GHz～26GHz,
The reflectance of electromagnetic wave is less than-20dB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610348259.4A CN105949630A (en) | 2016-05-24 | 2016-05-24 | Shielding material for vehicle-borne front radars and preparation method of shielding material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610348259.4A CN105949630A (en) | 2016-05-24 | 2016-05-24 | Shielding material for vehicle-borne front radars and preparation method of shielding material |
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| CN105949630A true CN105949630A (en) | 2016-09-21 |
Family
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106961827A (en) * | 2017-04-25 | 2017-07-18 | 大连东信微波技术有限公司 | Multi-layer structured wave absorbing elastomeric material and preparation method thereof |
| CN107912012A (en) * | 2017-11-29 | 2018-04-13 | 横店集团东磁股份有限公司 | A kind of electromagnetic wave shielding/absorption composite paster and preparation method thereof |
| CN108003834A (en) * | 2017-12-29 | 2018-05-08 | 湖北航聚科技有限公司 | A kind of harmonic wave and stray electromagnetic irradiation suppress material and preparation method thereof |
| CN108794831A (en) * | 2018-04-08 | 2018-11-13 | 华南理工大学 | A kind of flexible compound absorbing material and preparation method thereof applied to 5G millimere-wave bands |
| CN109228000A (en) * | 2018-09-07 | 2019-01-18 | 南京波平电子科技有限公司 | Dedicated absorbing material of vehicle radar antenna and preparation method thereof |
| CN109957180A (en) * | 2017-12-25 | 2019-07-02 | 洛阳尖端技术研究院 | Wave absorbing patch and preparation method thereof |
| CN113717661A (en) * | 2021-09-18 | 2021-11-30 | 无锡昆成新材料科技有限公司 | Viscous waterproof shielding material and preparation method thereof |
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| CN103819820A (en) * | 2014-02-10 | 2014-05-28 | 上海蓝昊电气江苏有限公司 | Mine cable rubber sheath conductor shielding material |
| CN105038058A (en) * | 2015-06-18 | 2015-11-11 | 天津市安正电力高分子材料有限公司 | Ultra-smooth high-voltage semi-conductive external shielding material and preparation method thereof |
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| CN102226018A (en) * | 2011-06-02 | 2011-10-26 | 安徽中鼎密封件股份有限公司 | Magnetizable rubber and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106961827A (en) * | 2017-04-25 | 2017-07-18 | 大连东信微波技术有限公司 | Multi-layer structured wave absorbing elastomeric material and preparation method thereof |
| CN107912012A (en) * | 2017-11-29 | 2018-04-13 | 横店集团东磁股份有限公司 | A kind of electromagnetic wave shielding/absorption composite paster and preparation method thereof |
| CN107912012B (en) * | 2017-11-29 | 2020-07-07 | 横店集团东磁股份有限公司 | Electromagnetic wave shielding/absorbing composite patch and preparation method thereof |
| CN109957180A (en) * | 2017-12-25 | 2019-07-02 | 洛阳尖端技术研究院 | Wave absorbing patch and preparation method thereof |
| CN108003834A (en) * | 2017-12-29 | 2018-05-08 | 湖北航聚科技有限公司 | A kind of harmonic wave and stray electromagnetic irradiation suppress material and preparation method thereof |
| CN108794831A (en) * | 2018-04-08 | 2018-11-13 | 华南理工大学 | A kind of flexible compound absorbing material and preparation method thereof applied to 5G millimere-wave bands |
| CN109228000A (en) * | 2018-09-07 | 2019-01-18 | 南京波平电子科技有限公司 | Dedicated absorbing material of vehicle radar antenna and preparation method thereof |
| CN113717661A (en) * | 2021-09-18 | 2021-11-30 | 无锡昆成新材料科技有限公司 | Viscous waterproof shielding material and preparation method thereof |
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Application publication date: 20160921 |
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