CN109054188A - A kind of radar absorbing of high absorbent capacity and preparation method thereof - Google Patents
A kind of radar absorbing of high absorbent capacity and preparation method thereof Download PDFInfo
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- CN109054188A CN109054188A CN201810694242.3A CN201810694242A CN109054188A CN 109054188 A CN109054188 A CN 109054188A CN 201810694242 A CN201810694242 A CN 201810694242A CN 109054188 A CN109054188 A CN 109054188A
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- radar absorbing
- absorbent capacity
- methacryloxypropyl
- nano silver
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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Abstract
The present invention provides a kind of radar absorbing and preparation method thereof of high absorbent capacity, and the radar absorbing of the high absorbent capacity includes following raw material: polypropylene random copolymer, liquid silica gel, ceramic powder, nano silver fibre, aromatic polyamide fibre, 3- (methacryloxypropyl) propyl trimethoxy silicane, fatty acid polyethylene glycol ester, dibutyl terephthalate；Preparation method includes the following steps: S1, preparing raw material；The premixing of S2, nano silver fibre, aromatic polyamide fibre, 3- (methacryloxypropyl) propyl trimethoxy silicane and ceramic powder；S3, mixing；S4, it extrusion, forms, be drying to obtain.Radar absorbing proposed by the present invention, rationally, preparation process raw material easily disperses formula, and radar absorbing obtained inhales that wave frequency bandwidth, wave-sucking performance is strong, density is small, stability is good, difference is small between applied widely, batch, is suitable for industrialized mass production.
Description
Technical field
The present invention relates to the radar absorbing of radar absorbing technical field more particularly to a kind of high absorbent capacity and
Preparation method.
Background technique
Radar absorbing, which refers to, can absorb or substantially weaken the electromagnetic wave energy for projecting its surface, to reduce electricity
A kind of material of the interference of magnetic wave, can be used as the stealth material of aircraft, guided missile, naval vessels, vehicle etc., it is dark to can also be used as microwave
The wall material of room is also used as the radiation proof material of the electronic products such as clothes, utensil and the mobile phone, computer, TV of radiation protection.
Radar absorbing can be divided into inorganic wave-absorbing material and organic absorbing material two major classes according to the difference of material, wherein inorganic suction
Wave material mainly has iron series, carbon system and ceramics system absorbing material；Organic absorbing material is usually conductive high molecular polymer.Two
Person respectively has advantage and disadvantage, although current inorganic wave-absorbing material has excellent wave-sucking performance, its density is commonly greater than 5kg/m2,
Thus the reference in certain field is restricted.Organic absorbing material due to light, flexibility is good, can large area film forming, closely
By extensive concern over year.Current most commonly used organic absorbing material is schiff bases and its salt, but due to schiff bases and its salt
Stability is poor, cause using when inhale wave effect obviously weaken, influence the wave-sucking performance of material.Based on existing in the prior art
Deficiency, the present invention propose a kind of radar absorbing and preparation method thereof of high absorbent capacity.
Summary of the invention
The deficiency that the purpose of the present invention is to solve the wave-sucking performances of existing radar absorbing is weak, stability is poor, and
A kind of radar absorbing and preparation method thereof of the high absorbent capacity proposed.
In order to achieve the above object, the present invention is achieved by the following technical programs:
A kind of radar absorbing of high absorbent capacity, the raw material including following parts by weight: polypropylene random copolymer 80-
120 parts, 20-40 parts of liquid silica gel, 1-5 parts of ceramic powder, 1-3 parts of nano silver fibre, 1-6 parts of aromatic polyamide fibre, 3- (first
Base acryloyl-oxy) 2-9 parts of propyl trimethoxy silicane, 0.05-0.15 parts of fatty acid polyethylene glycol ester, dibutyl terephthalate
0.1-0.3 parts.
Preferably, the nano silver fibre, aromatic polyamide fibre and 3- (methacryloxypropyl) propyl trimethoxy
The mass ratio of silane is 1:(1-2): (2-3).
Preferably, the mass ratio of the fatty acid polyethylene glycol ester and dibutyl terephthalate is 1:2.
Preferably, the radar absorbing of the high absorbent capacity includes the raw material of following parts by weight: polypropylene random is total
90-110 parts of polymers, 25-35 parts of liquid silica gel, 2-5 parts of ceramic powder, 1.5-2.5 parts of nano silver fibre, aromatic polyamide fibre
2-5 parts, 4-7 parts of 3- (methacryloxypropyl) propyl trimethoxy silicane, 0.08-0.12 parts of fatty acid polyethylene glycol ester, to benzene
0.15-0.25 parts of dibutyl carboxylic acid.
Preferably, the radar absorbing of the high absorbent capacity includes the raw material of following parts by weight: polypropylene random is total
100 parts of polymers, 30 parts of liquid silica gel, 4 parts of ceramic powder, 2 parts of nano silver fibre, 4 parts of aromatic polyamide fibre, 3- (methyl-prop
Alkene acyl-oxygen) 6 parts of propyl trimethoxy silicane, 0.1 part of fatty acid polyethylene glycol ester, 0.2 part of dibutyl terephthalate.
The invention also provides a kind of preparation methods of the radar absorbing of high absorbent capacity, comprising the following steps:
It is S1, fine according to 80-120 parts of polypropylene random copolymer, 20-40 parts of liquid silica gel, 1-5 parts of ceramic powder, nano silver
Tie up 1-3 parts, 1-6 parts of aromatic polyamide fibre, 2-9 parts of 3- (methacryloxypropyl) propyl trimethoxy silicane, fatty acid polyglycol
0.05-0.15 parts of glycol ester, 0.1-0.3 parts of dibutyl terephthalate weigh each raw material, it is spare；
S2, nano silver fibre and aromatic polyamide fibre are added to 3- (methacryloxypropyl) propyl trimethoxy silicon
5-10min is stirred with the speed of 100-200r/min in alkane, then the weighed ceramic powder of step S1 is added, ultrasonic disperse is uniform to be obtained
Mixture A；
S3, polypropylene random copolymer, fatty acid polyethylene glycol ester and dibutyl terephthalate are added to mixing machine
In, mixture B is stirred until homogeneous to obtain with the speed of 200-300r/min, improves mixing speed to 300-500r/min again by liquid
Silica gel and mixture A are added sequentially in mixture B, are stirred until homogeneous up to mixture C；
S4, mixture C through extrusion, form, be drying to obtain the radar absorbing of high absorbent capacity.
Radar absorbing provided by the invention, advantage is compared with prior art:
1, radar absorbing proposed by the present invention, rationally, preparation process raw material easily disperses formula, radar-wave absorbing obtained
Material suction wave frequency bandwidth, wave-sucking performance is strong, density is small, stability is good, difference is small between applied widely, batch, is suitable for industry
Change batch production；
2, radar absorbing proposed by the present invention assigns radar absorbing using polypropylene random copolymer as major ingredient
Large area film forming may be implemented in excellent processing characteristics, add the nano silver fibre of rational proportion, aromatic polyamide fibre and
Conventional radar absorbing material stability is poor, absorbability is weak to significantly improve for 3- (methacryloxypropyl) propyl trimethoxy silicane
The problem of, expand the use scope of radar absorbing, and the experiment proved that nano silver fibre, aromatic polyamide in the present invention
Fiber and 3- (methacryloxypropyl) propyl trimethoxy silicane have synergistic effect, can significantly improve radar absorbing
Wave-sucking performance；
3, the addition in the present invention rationally than fatty acid polyethylene glycol ester and dibutyl terephthalate can be effectively improved
The molding processibility of radar absorbing makes the radar absorbing of preparation be easier to meet industrialized production needs；
4, the invention also provides a kind of radar-wave absorbings for preparing high absorbent capacity easy to operate, stock dispersion effect is good
The method of material, first by nano silver fibre, aromatic polyamide fibre and 3- (methacryloxypropyl) propyl trimethoxy silicane
The pre-dispersed compounding to accelerate three is carried out, adds ceramic powder to improve the raw material for being not easy to disperse in polypropylene random copolymer
In dispersion effect, improve the stability of final products, expand the use scope of radar absorbing.
Specific embodiment
Combined with specific embodiments below the present invention is made further to explain.
Embodiment 1
A kind of radar absorbing of high absorbent capacity proposed by the present invention, the raw material including following parts by weight:
80 parts of polypropylene random copolymer, 20 parts of liquid silica gel, 1 part of ceramic powder, 1 part of nano silver fibre, aromatic series polyamides
1 part of amine fiber, 2 parts of 3- (methacryloxypropyl) propyl trimethoxy silicane, 0.05 part of fatty acid polyethylene glycol ester, terephthaldehyde
0.1 part of dibutyl phthalate；
Preparation method includes the following steps:
S1, according to 80 parts of polypropylene random copolymer, 20 parts of liquid silica gel, 1 part of ceramic powder, 1 part of nano silver fibre, fragrance
It is 1 part of polyamide fiber, 2 parts of 3- (methacryloxypropyl) propyl trimethoxy silicane, 0.05 part of fatty acid polyethylene glycol ester, right
0.1 part of dibatyl phithalate weighs each raw material, spare；
S2, nano silver fibre and aromatic polyamide fibre are added to 3- (methacryloxypropyl) propyl trimethoxy silicon
5min is stirred with the speed of 100r/min in alkane, then the weighed ceramic powder of step S1 is added, ultrasonic disperse is uniform to obtain mixture
A；
S3, polypropylene random copolymer, fatty acid polyethylene glycol ester and dibutyl terephthalate are added to mixing machine
In, mixture B is stirred until homogeneous to obtain with the speed of 200r/min, raising mixing speed to 300r/min by liquid silica gel and is mixed again
It closes object A to be added sequentially in mixture B, be stirred until homogeneous up to mixture C；
S4, mixture C through extrusion, form, be drying to obtain the radar absorbing of high absorbent capacity.
Embodiment 2
A kind of radar absorbing of high absorbent capacity proposed by the present invention, the raw material including following parts by weight:
100 parts of polypropylene random copolymer, 30 parts of liquid silica gel, 4 parts of ceramic powder, 2 parts of nano silver fibre, aromatic series polyamides
4 parts of amine fiber, 6 parts of 3- (methacryloxypropyl) propyl trimethoxy silicane, 0.1 part of fatty acid polyethylene glycol ester, terephthaldehyde
0.2 part of dibutyl phthalate；
Preparation method includes the following steps:
S1, according to 100 parts of polypropylene random copolymer, 30 parts of liquid silica gel, 4 parts of ceramic powder, 2 parts of nano silver fibre, virtue
4 parts of fragrant polyamide fiber, 6 parts of 3- (methacryloxypropyl) propyl trimethoxy silicane, 0.1 part of fatty acid polyethylene glycol ester,
0.2 part of dibutyl terephthalate weighs each raw material, spare；
S2, nano silver fibre and aromatic polyamide fibre are added to 3- (methacryloxypropyl) propyl trimethoxy silicon
8min is stirred with the speed of 150r/min in alkane, then the weighed ceramic powder of step S1 is added, ultrasonic disperse is uniform to obtain mixture
A；
S3, polypropylene random copolymer, fatty acid polyethylene glycol ester and dibutyl terephthalate are added to mixing machine
In, mixture B is stirred until homogeneous to obtain with the speed of 250r/min, raising mixing speed to 400r/min by liquid silica gel and is mixed again
It closes object A to be added sequentially in mixture B, be stirred until homogeneous up to mixture C；
S4, mixture C through extrusion, form, be drying to obtain the radar absorbing of high absorbent capacity.
Embodiment 3
A kind of radar absorbing of high absorbent capacity proposed by the present invention, the raw material including following parts by weight:
120 parts of polypropylene random copolymer, 40 parts of liquid silica gel, 5 parts of ceramic powder, 3 parts of nano silver fibre, aromatic series polyamides
6 parts of amine fiber, 9 parts of 3- (methacryloxypropyl) propyl trimethoxy silicane, 0.15 part of fatty acid polyethylene glycol ester, terephthaldehyde
0.3 part of dibutyl phthalate；
Preparation method includes the following steps:
S1, according to 120 parts of polypropylene random copolymer, 40 parts of liquid silica gel, 5 parts of ceramic powder, 3 parts of nano silver fibre, virtue
6 parts of fragrant polyamide fiber, 9 parts of 3- (methacryloxypropyl) propyl trimethoxy silicane, 0.15 part of fatty acid polyethylene glycol ester,
0.3 part of dibutyl terephthalate weighs each raw material, spare；
S2, nano silver fibre and aromatic polyamide fibre are added to 3- (methacryloxypropyl) propyl trimethoxy silicon
10min is stirred with the speed of 200r/min in alkane, then the weighed ceramic powder of step S1 is added, ultrasonic disperse is uniform to obtain mixture
A；
S3, polypropylene random copolymer, fatty acid polyethylene glycol ester and dibutyl terephthalate are added to mixing machine
In, mixture B is stirred until homogeneous to obtain with the speed of 300r/min, raising mixing speed to 500r/min by liquid silica gel and is mixed again
It closes object A to be added sequentially in mixture B, be stirred until homogeneous up to mixture C；
S4, mixture C through extrusion, form, be drying to obtain the radar absorbing of high absorbent capacity.
Comparative example 1
By the nano silver fibre in embodiment 1 according to nano silver fibre, aromatic polyamide fibre and 3- in embodiment 1
The quality of (methacryloxypropyl) propyl trimethoxy silicane is substituted for aromatic polyamide fibre and 3- (methyl-prop than equal proportion
Alkene acyl-oxygen) propyl trimethoxy silicane, for his condition with embodiment 1.
Comparative example 2
By the aromatic polyamide fibre in embodiment 1 according to nano silver fibre, aromatic polyamide fibre in embodiment 1
Nano silver fibre and 3- (metering system are substituted for than equal proportion with the quality of 3- (methacryloxypropyl) propyl trimethoxy silicane
Acyl-oxygen) propyl trimethoxy silicane, for his condition with embodiment 1.
Comparative example 3
By 3- (methacryloxypropyl) propyl trimethoxy silicane in embodiment 1 according to nano silver fibre in embodiment 1,
The quality of aromatic polyamide fibre and 3- (methacryloxypropyl) propyl trimethoxy silicane is substituted for nano silver than equal proportion
Fiber and aromatic polyamide fibre, for his condition with embodiment 1.
The embodiment 1-3 and comparative example 1-3 radar absorbing prepared is tested for the property, the results are shown in Table 1.
Table 1:
1 experimental result of table is shown: the suction wave frequency range and maximum reflection damage of the radar absorbing of embodiment 1-3 preparation
Mistake value is much better than the absorbing material that comparative example obtains, and the density for the radar absorbing being prepared is small, in 1.0g/cm2
Hereinafter, showing that radar absorbing proposed by the present invention inhales the characteristic that wave range is wide, maximum reflection penalty values are big, density is small, make
It is wider with range.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of radar absorbing of high absorbent capacity, which is characterized in that the raw material including following parts by weight: polypropylene random
80-120 parts of copolymer, 20-40 parts of liquid silica gel, 1-5 parts of ceramic powder, 1-3 parts of nano silver fibre, aromatic polyamide fibre 1-
6 parts, 2-9 parts of 3- (methacryloxypropyl) propyl trimethoxy silicane, 0.05-0.15 parts of fatty acid polyethylene glycol ester, to benzene two
0.1-0.3 parts of formic acid dibutyl ester.
2. a kind of radar absorbing of high absorbent capacity according to claim 1, which is characterized in that the nano silver is fine
The mass ratio of dimension, aromatic polyamide fibre and 3- (methacryloxypropyl) propyl trimethoxy silicane is 1:(1-2): (2-3).
3. a kind of radar absorbing of high absorbent capacity according to claim 1, which is characterized in that the fatty acid polyglycol
The mass ratio of glycol ester and dibutyl terephthalate is 1:2.
4. a kind of radar absorbing of high absorbent capacity according to claim 1, which is characterized in that including following weight
The raw material of part: 90-110 parts of polypropylene random copolymer, 25-35 parts of liquid silica gel, 2-5 parts of ceramic powder, nano silver fibre 1.5-
2.5 parts, 2-5 parts of aromatic polyamide fibre, 4-7 parts of 3- (methacryloxypropyl) propyl trimethoxy silicane, fatty acid polyglycol second
0.08-0.12 parts of diol ester, 0.15-0.25 parts of dibutyl terephthalate.
5. a kind of radar absorbing of high absorbent capacity according to claim 1 or 2 or 3, which is characterized in that including with
The raw material of lower parts by weight: 100 parts of polypropylene random copolymer, 30 parts of liquid silica gel, 4 parts of ceramic powder, 2 parts of nano silver fibre, virtue
4 parts of fragrant polyamide fiber, 6 parts of 3- (methacryloxypropyl) propyl trimethoxy silicane, 0.1 part of fatty acid polyethylene glycol ester,
0.2 part of dibutyl terephthalate.
6. a kind of preparation method of the radar absorbing of high absorbent capacity, which comprises the following steps:
S1, according to 80-120 parts of polypropylene random copolymer, 20-40 parts of liquid silica gel, 1-5 parts of ceramic powder, nano silver fibre 1-3
Part, 1-6 parts of aromatic polyamide fibre, 2-9 parts of 3- (methacryloxypropyl) propyl trimethoxy silicane, fatty acid polyglycol ethylene glycol
0.05-0.15 parts of ester, 0.1-0.3 parts of dibutyl terephthalate weigh each raw material, it is spare；
S2, nano silver fibre and aromatic polyamide fibre are added in 3- (methacryloxypropyl) propyl trimethoxy silicane
5-10min is stirred with the speed of 100-200r/min, then the weighed ceramic powder of step S1 is added, ultrasonic disperse is uniform to be mixed
Object A；
S3, polypropylene random copolymer, fatty acid polyethylene glycol ester and dibutyl terephthalate are added in mixing machine, with
The speed of 200-300r/min is stirred until homogeneous to obtain mixture B, improves mixing speed to 300-500r/min again by liquid silica gel
It is added sequentially in mixture B, is stirred until homogeneous up to mixture C with mixture A；
S4, mixture C through extrusion, form, be drying to obtain the radar absorbing of high absorbent capacity.
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| CN201810694242.3A CN109054188A (en) | 2018-06-29 | 2018-06-29 | A kind of radar absorbing of high absorbent capacity and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810694242.3A CN109054188A (en) | 2018-06-29 | 2018-06-29 | A kind of radar absorbing of high absorbent capacity and preparation method thereof |
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Citations (6)
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| CN102746576B (en) * | 2012-07-17 | 2015-02-04 | 合肥工业大学 | Polyolefin heat-conducting composite material |
| CN105237890A (en) * | 2015-11-02 | 2016-01-13 | 深圳德邦界面材料有限公司 | EPDM/PP thermoplastic elastomer with electromagnetic shielding property |
| CN106380689A (en) * | 2016-08-31 | 2017-02-08 | 江苏领瑞新材料科技有限公司 | Irradiation-resistant, halogen-free and flame-retardant ethylene-propylene cable material and preparation method thereof |
| CN106800705A (en) * | 2017-01-18 | 2017-06-06 | 中北大学 | Pp/epdm/nickel coated glass fibres functional composite material |
| KR20170076361A (en) * | 2015-12-24 | 2017-07-04 | 율촌화학 주식회사 | Complex sheets with shielding and absorbing of electromagnetic waves and thermal dissipation, and methods of manufacturing the same |
-
2018
- 2018-06-29 CN CN201810694242.3A patent/CN109054188A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746576B (en) * | 2012-07-17 | 2015-02-04 | 合肥工业大学 | Polyolefin heat-conducting composite material |
| CN104292526A (en) * | 2014-11-03 | 2015-01-21 | 济南中正新材料有限公司 | Ultra-thin continuous winding wave-absorbing material |
| CN105237890A (en) * | 2015-11-02 | 2016-01-13 | 深圳德邦界面材料有限公司 | EPDM/PP thermoplastic elastomer with electromagnetic shielding property |
| KR20170076361A (en) * | 2015-12-24 | 2017-07-04 | 율촌화학 주식회사 | Complex sheets with shielding and absorbing of electromagnetic waves and thermal dissipation, and methods of manufacturing the same |
| CN106380689A (en) * | 2016-08-31 | 2017-02-08 | 江苏领瑞新材料科技有限公司 | Irradiation-resistant, halogen-free and flame-retardant ethylene-propylene cable material and preparation method thereof |
| CN106800705A (en) * | 2017-01-18 | 2017-06-06 | 中北大学 | Pp/epdm/nickel coated glass fibres functional composite material |
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