CN115873347A - Foaming wave-absorbing material combining polypropylene and metal micro-nano particles and preparation method thereof - Google Patents
Foaming wave-absorbing material combining polypropylene and metal micro-nano particles and preparation method thereof Download PDFInfo
- Publication number
- CN115873347A CN115873347A CN202211687154.3A CN202211687154A CN115873347A CN 115873347 A CN115873347 A CN 115873347A CN 202211687154 A CN202211687154 A CN 202211687154A CN 115873347 A CN115873347 A CN 115873347A
- Authority
- CN
- China
- Prior art keywords
- wave
- polypropylene
- metal micro
- parts
- absorbing material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002105 nanoparticle Substances 0.000 title claims abstract description 71
- -1 polypropylene Polymers 0.000 title claims abstract description 67
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 63
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 63
- 239000002184 metal Substances 0.000 title claims abstract description 63
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 63
- 239000011358 absorbing material Substances 0.000 title claims abstract description 61
- 238000005187 foaming Methods 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000003063 flame retardant Substances 0.000 claims abstract description 35
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 13
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 13
- 239000006096 absorbing agent Substances 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 7
- 239000003381 stabilizer Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 22
- 239000002131 composite material Substances 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000012965 benzophenone Substances 0.000 claims description 12
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 12
- 239000008116 calcium stearate Substances 0.000 claims description 12
- 235000013539 calcium stearate Nutrition 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 229920005990 polystyrene resin Polymers 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 10
- 238000001746 injection moulding Methods 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 239000004088 foaming agent Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 239000000460 chlorine Substances 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- RVHSTXJKKZWWDQ-UHFFFAOYSA-N 1,1,1,2-tetrabromoethane Chemical compound BrCC(Br)(Br)Br RVHSTXJKKZWWDQ-UHFFFAOYSA-N 0.000 claims description 2
- HGRZLIGHKHRTRE-UHFFFAOYSA-N 1,2,3,4-tetrabromobutane Chemical compound BrCC(Br)C(Br)CBr HGRZLIGHKHRTRE-UHFFFAOYSA-N 0.000 claims description 2
- CWZVMVIHYSYLSI-UHFFFAOYSA-N 1,3-dibromo-5-[3,5-dibromo-4-(2,3-dibromopropoxy)phenyl]sulfonyl-2-(2,3-dibromopropoxy)benzene Chemical compound C1=C(Br)C(OCC(Br)CBr)=C(Br)C=C1S(=O)(=O)C1=CC(Br)=C(OCC(Br)CBr)C(Br)=C1 CWZVMVIHYSYLSI-UHFFFAOYSA-N 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- TXQVDVNAKHFQPP-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(CO)CO TXQVDVNAKHFQPP-UHFFFAOYSA-N 0.000 claims description 2
- 239000006230 acetylene black Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 2
- 150000008366 benzophenones Chemical class 0.000 claims description 2
- 150000001565 benzotriazoles Chemical class 0.000 claims description 2
- 239000002041 carbon nanotube Substances 0.000 claims description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- 239000010941 cobalt Substances 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- VONWDASPFIQPDY-UHFFFAOYSA-N dimethyl methylphosphonate Chemical compound COP(C)(=O)OC VONWDASPFIQPDY-UHFFFAOYSA-N 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims description 2
- 230000003179 granulation Effects 0.000 claims description 2
- 229910021389 graphene Inorganic materials 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 239000011859 microparticle Substances 0.000 claims description 2
- 239000012170 montan wax Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 2
- 229920013716 polyethylene resin Polymers 0.000 claims description 2
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 claims description 2
- 150000003918 triazines Chemical class 0.000 claims description 2
- HQUQLFOMPYWACS-UHFFFAOYSA-N tris(2-chloroethyl) phosphate Chemical compound ClCCOP(=O)(OCCCl)OCCCl HQUQLFOMPYWACS-UHFFFAOYSA-N 0.000 claims description 2
- GTRSAMFYSUBAGN-UHFFFAOYSA-N tris(2-chloropropyl) phosphate Chemical compound CC(Cl)COP(=O)(OCC(C)Cl)OCC(C)Cl GTRSAMFYSUBAGN-UHFFFAOYSA-N 0.000 claims description 2
- 239000001993 wax Substances 0.000 claims description 2
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 2
- 229910017464 nitrogen compound Inorganic materials 0.000 claims 2
- 150000002830 nitrogen compounds Chemical class 0.000 claims 2
- 229910052698 phosphorus Inorganic materials 0.000 claims 2
- 239000011574 phosphorus Substances 0.000 claims 2
- 239000011324 bead Substances 0.000 abstract description 7
- 230000010287 polarization Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000009825 accumulation Methods 0.000 abstract description 2
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 10
- 150000008301 phosphite esters Chemical class 0.000 description 10
- 239000006260 foam Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000004793 Polystyrene Substances 0.000 description 4
- 229920002223 polystyrene Polymers 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000003018 phosphorus compounds Chemical class 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Abstract
The invention discloses a foaming wave-absorbing material combining polypropylene and metal micro-nano particles and a preparation method thereof, belonging to the technical field of wave-absorbing materials; the wave-absorbing material comprises the following raw materials in parts by weight: 60-80 parts of polypropylene, 10-20 parts of wave absorbing agent, 3-10 parts of metal micro-nano particles, 8-12 parts of flame retardant, 1-5 parts of compatilizer, 0.1-1.5 parts of stabilizer, 0.3-3 parts of antioxidant and 0.3-3 parts of lubricant; according to the invention, the polypropylene beads are compounded by the metal micro-nano particles, so that an unstable polarization center can be formed on the contact surface of the polypropylene beads and the metal micro-nano particles, a large amount of space polarization charge accumulation is caused, the absorption of electromagnetic waves is enhanced, the space impedance matching property of the polypropylene beads can be improved, the reflection of the electromagnetic waves at the interface of the wave-absorbing material is reduced, the wave-absorbing performance is further improved, the mechanical property, the size stability and the flame retardant property of the foaming wave-absorbing material are favorably improved due to the compounded addition of the metal micro-nano particles, and the market industry requirements are met.
Description
Technical Field
The invention relates to a foamed wave-absorbing material combining polypropylene and metal micro-nano particles and a preparation method thereof, belonging to the technical field of wave-absorbing materials.
Background
The wave-absorbing composite material is an energy conversion functional material, can effectively absorb electromagnetic waves, and can be used for converting the electromagnetic energy into heat energy or leading the electromagnetic waves to be lost through interference or scattering. The wave-absorbing composite material mainly comprises a wave-absorbing agent and a base material, wherein the wave-absorbing agent is used for absorbing and losing electromagnetic waves, the base material is generally a high polymer material, such as thermosetting epoxy resin, phenolic resin, cyanate resin, thermoplastic polyethylene, polypropylene and polystyrene, and the base material mainly plays a role in bonding and bearing.
The wave absorbing materials on the market at present are mainly sponge wave absorbing bodies and polystyrene wave absorbing materials, but when the sponge wave absorbing bodies are used, the wave absorbing agent is easy to fall off, the service life is short, and meanwhile, the product is not environment-friendly; when the polystyrene wave-absorbing material is used, the strength of the material is not enough, and the material is easily subjected to brittle fracture due to accidental collision in the installation process, so that the whole functionality of the whole wave-absorbing material is poor, and the wave-absorbing performance, flame retardance and mechanical strength of the wave-absorbing material cannot better meet the market demand.
In the prior art, a flame retardant is added in the process of extruding and granulating polypropylene resin to endow foamed polypropylene with flame retardant performance, but the finished product obtained by a direct adding method has poor flame retardant performance, if a finished product with better flame retardant performance is to be obtained, a large amount of flame retardant needs to be added, which can affect the foaming effect and the cell quality in the later period of the material to a great extent, and the apparent quality and the mechanical property of the formed material can be affected due to too large addition of the flame retardant.
Therefore, the wave absorbing performance, the mechanical property and the flame retardant property of the wave absorbing material are considered to be urgent requirements of the next generation of wave absorbing material, and the flame retardant polypropylene composite material added with the metal micro-nano particles provided by the invention can well solve the technical problem.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problem that the existing wave-absorbing material cannot well take wave-absorbing performance, mechanical performance and flame retardant performance into consideration.
(II) technical scheme
In order to solve the technical problems, the invention provides a foaming wave-absorbing material combining polypropylene and metal micro-nano particles, which comprises the following raw materials in parts by weight: 60-80 parts of polypropylene, 10-20 parts of wave absorbing agent, 3-10 parts of metal micro-nano particles, 8-15 parts of flame retardant, 1-5 parts of compatilizer, 0.1-1.5 parts of stabilizer, 0.3-3 parts of antioxidant and 0.3-3 parts of lubricant.
Specifically, the metal micro-nano particles are micro-nano particles of metals or metal oxides such as iron, aluminum, chromium, nickel, cobalt, manganese, antimony, indium and the like, and the particle size is 300-3000nm.
Specifically, the wave absorbing agent is at least one of conductive carbon black, acetylene black, graphite powder, graphene and carbon nanotubes.
Specifically, the flame retardant is organic chlorine/bromide and phosphorus/nitrogen compounds, the organic chlorine/bromide is at least one of tetrabromoethane, tetrabromobutane, octabromoether or octabromobisphenol S ether, and the phosphorus/nitrogen compounds are at least one of dimethyl methylphosphonate, tris (2-chloropropyl) phosphate and tris (2-chloroethyl) phosphate.
Specifically, the compatilizer is at least one of polystyrene resin and polyethylene resin, and the good compatibility of the flame retardant and the polystyrene is utilized to improve the precipitation and migration of the flame retardant.
Specifically, the stabilizer is one or more of benzophenones, benzotriazoles, triazines and Hindered Amines (HAL).
Specifically, the antioxidant is at least one of hindered phenol antioxidant, phosphite antioxidant and thiosulfate antioxidant, and the lubricant is at least one of pentaerythritol stearate, calcium stearate, montan wax, polyethylene wax and zinc stearate.
The invention also provides a preparation method of the foamed wave-absorbing material combining polypropylene and metal micro-nano particles, which comprises the following steps:
s1: taking polypropylene, a wave absorbing agent, metal micro-nano particles, a flame retardant, a compatilizer, a stabilizer, an antioxidant and a lubricant according to a proportion;
s2: adding the raw materials into a high-pressure blending pot, fully stirring and mixing, extruding micro particles through a double-screw extruder, and performing melt extrusion granulation to obtain the polypropylene and metal micro-nano particle composite material;
s3: uniformly mixing the polypropylene and metal micro-nano particle composite material with a chemical foaming agent, and performing secondary die sinking and injection molding to obtain a polypropylene and metal micro-nano particle composite foaming wave-absorbing material;
s4: and (3) preparing the obtained foamed wave-absorbing material into a flat plate or a pointed cone and other required shapes by using a forming machine, drying, cooling and testing the material performance.
More specifically, the length-diameter ratio L: D of the double-screw extruder in the step S2 is 35-45, the rotating speed of the screw is 250-450r/min, and the feeding speed is 5-20rpm.
More specifically, the step S3 of secondary die sinking and injection molding to obtain the polypropylene and metal micro-nano particle composite foaming wave-absorbing material, wherein the molding temperature is 200-250 ℃.
(III) advantageous effects
The technical scheme of the invention has the following advantages:
1, the invention compounds polypropylene beads by using metal micro-nano particles, can form unstable polarization centers on contact surfaces of the metal micro-nano particles and the polypropylene beads, causes a large amount of space polarization charge accumulation, enhances electromagnetic wave absorption,
2, the metal particles can also improve the space impedance matching of the polypropylene beads, reduce the reflection of electromagnetic waves at the interface of the wave-absorbing material and further improve the wave-absorbing performance.
3, on one hand, the comprehensive mechanical property of the material is improved through the metal micro-nano particles, and on the other hand, the defects of flammability, large molding shrinkage, unstable size and the like of the material are improved.
In addition to the technical problems solved by the present invention, the technical features of the constituent technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical features of the present invention and the advantages brought by the technical features of the present invention will be further described with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a preparation process of the wave-absorbing material of the present invention.
FIG. 2 is a schematic diagram of the polypropylene bead and metal micro-nano particle composite material.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
A foamed wave-absorbing material combining polypropylene and metal micro-nano particles comprises the following raw materials in parts by weight: 60 parts of polypropylene, 20 parts of conductive carbon black, 3 parts of magnetic iron powder micro-nano particles, 15 parts of octabromoether, 1.5 parts of polystyrene resin, 0.5 part of benzophenone, 0.3 part of phosphite ester and 0.3 part of calcium stearate.
As shown in fig. 1 and 2, the preparation method of the foamed wave-absorbing material combining polypropylene and metal micro-nano particles comprises the following steps:
s1: mixing the raw materials of polypropylene, conductive carbon black, magnetic iron powder micro-nano particles, octabromoether, polystyrene resin, benzophenone, phosphite ester and calcium stearate according to the proportion;
s2: adding the raw materials into a high-pressure blending pot, fully stirring and mixing, feeding into a double-screw extruder, carrying out melt extrusion, and granulating to obtain the flame-retardant polypropylene-metal micro-nano particle composite material, wherein the extrusion temperature is 200-240 ℃, and the rotating speed of a screw is 350r/min;
s3: mixing the flame-retardant polypropylene-metal micro-nano particle composite material with a chemical foaming agent, and performing secondary die opening injection molding to obtain a polypropylene-metal micro-nano particle foaming wave-absorbing material, wherein the foaming rate is 15, and the molding temperature is 200-250 ℃;
s4: and (3) preparing the obtained foam wave-absorbing material into a flat plate with the thickness of 20mm by using a forming machine, drying and cooling the flat plate, and testing the performance of the material.
Example 2
A foamed wave-absorbing material combining polypropylene and metal micro-nano particles comprises the following raw materials in parts by weight: 60 parts of polypropylene, 18 parts of conductive carbon black, 5 parts of magnetic iron powder micro-nano particles, 15 parts of octabromoether, 1.5 parts of polystyrene resin, 0.5 part of benzophenone, 0.3 part of phosphite ester and 0.3 part of calcium stearate.
The preparation method of the foamed wave-absorbing material combining the polypropylene and the metal micro-nano particles comprises the following steps:
s1: mixing the raw materials of polypropylene, conductive carbon black, magnetic iron powder micro-nano particles, octabromoether, polystyrene resin, benzophenone, phosphite ester and calcium stearate according to the proportion;
s2: adding the raw materials into a high-pressure blending pot, fully stirring and mixing, feeding into a double-screw extruder, performing melt extrusion, and granulating to obtain the flame-retardant polypropylene-metal micro-nano particle composite material, wherein the extrusion temperature is 200-240 ℃, and the rotation speed of a screw is 400r/min;
s3: mixing the flame-retardant polypropylene-metal micro-nano particle composite material with a chemical foaming agent, and performing secondary die opening injection molding to obtain a polypropylene-metal micro-nano particle foaming wave-absorbing material, wherein the foaming rate is 15, and the molding temperature is 200-250 ℃;
s4: and (3) preparing the obtained foam wave-absorbing material into a flat plate with the thickness of 20mm by using a forming machine, drying and cooling the flat plate, and testing the performance of the material.
Example 3
A foamed wave-absorbing material combining polypropylene and metal micro-nano particles comprises the following raw materials in parts by weight: 65 parts of polypropylene, 15 parts of conductive carbon black, 8 parts of magnetic iron powder micro-nano particles, 10 parts of octabromoether, 1.5 parts of polystyrene resin, 0.5 part of benzophenone, 0.3 part of phosphite ester and 0.3 part of calcium stearate.
The preparation method of the foaming wave-absorbing material (flame-retardant polypropylene-metal micro-nano particle foaming wave-absorbing material) with the combination of the polypropylene and the metal micro-nano particles comprises the following steps:
s1: mixing the raw materials of polypropylene, conductive carbon black, magnetic iron powder micro-nano particles, octabromoether, polystyrene resin, benzophenone, phosphite ester and calcium stearate according to the proportion;
s2: adding the raw materials into a high-pressure blending pot, fully stirring and mixing, feeding into a double-screw extruder, performing melt extrusion, and granulating to obtain the flame-retardant polypropylene-metal micro-nano particle composite material, wherein the extrusion temperature is 200-240 ℃, and the rotation speed of a screw is 360r/min;
s3: mixing the flame-retardant polypropylene-metal micro-nano particle composite material with a chemical foaming agent, and performing secondary die opening injection molding to obtain a polypropylene-metal micro-nano particle foaming wave-absorbing material, wherein the foaming rate is 18, and the molding temperature is 200-250 ℃;
s4: and (3) preparing the obtained foam wave-absorbing material into a flat plate with the thickness of 20mm by using a forming machine, drying and cooling the flat plate, and testing the performance of the material.
Example 4
A foamed wave-absorbing material combining polypropylene and metal micro-nano particles comprises the following raw materials in parts by weight: 65 parts of polypropylene, 13 parts of conductive carbon black, 10 parts of magnetic iron powder micro-nano particles, 10 parts of octabromoether, 1.5 parts of polystyrene resin, 0.5 part of benzophenone, 0.3 part of phosphite ester and 0.3 part of calcium stearate.
The preparation method of the foamed wave-absorbing material combining the polypropylene and the metal micro-nano particles comprises the following steps:
s1: mixing the raw materials of polypropylene, conductive carbon black, magnetic iron powder micro-nano particles, octabromoether, polystyrene resin, benzophenone, phosphite ester and calcium stearate according to the proportion;
s2: adding the raw materials into a high-pressure blending pot, fully stirring and mixing, feeding into a double-screw extruder, performing melt extrusion, and granulating to obtain the flame-retardant polypropylene-metal micro-nano particle composite material, wherein the extrusion temperature is 200-240 ℃, and the rotation speed of a screw is 380r/min;
s3: mixing the flame-retardant polypropylene-metal micro-nano particle composite material with a chemical foaming agent, and performing secondary die opening injection molding to obtain a polypropylene-metal micro-nano particle foaming wave-absorbing material, wherein the foaming rate is 18, and the molding temperature is 200-250 ℃;
s4: and (3) preparing the obtained foam wave-absorbing material into a flat plate with the thickness of 20mm by using a forming machine, drying and cooling the flat plate, and testing the performance of the material.
Comparative example 1
The flame-retardant polypropylene foaming wave-absorbing material comprises the following raw materials in parts by weight: 60 parts of polypropylene, 20 parts of conductive carbon black, 15 parts of octabromoether, 1.5 parts of polystyrene resin, 0.5 part of benzophenone, 0.3 part of phosphite ester and 0.3 part of calcium stearate.
The preparation method of the flame-retardant polypropylene foaming wave-absorbing material comprises the following steps:
s1: mixing polypropylene, conductive carbon black, octabromoether, polystyrene resin, benzophenone, phosphite ester and calcium stearate according to the proportion;
s2: adding the raw materials into a high-pressure blending pot, fully stirring and mixing, feeding into a double-screw extruder, performing melt extrusion, and granulating to obtain the flame-retardant polypropylene material, wherein the extrusion temperature is 200-240 ℃, and the rotating speed of a screw is 350r/min;
s3: mixing the flame-retardant polypropylene material with a chemical foaming agent, and performing secondary die opening and injection molding to obtain a polypropylene foaming wave-absorbing material, wherein the foaming ratio is 15, and the molding temperature is 200-250 ℃;
s4: and (3) preparing the obtained foam wave-absorbing material into a flat plate with the thickness of 20mm by using a forming machine, drying and cooling the flat plate, and testing the performance of the material.
According to relevant detection standards, density, tensile strength, impact strength, foaming multiplying power, molding shrinkage and flame retardant grade of each embodiment and comparative example are detected, each group of materials are cut into wave-absorbing flat plates with the size of 300x300x20mm according to GJB2038-94 radar wave-absorbing material reflectivity test method, 2-18GHz wave-absorbing performance test is carried out under an arch field reflectivity test system, and the detection results are shown in table 1:
TABLE 1
| Material properties | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 |
| Density (g/cm) 3 ) | 1.046 | 1.048 | 1.035 | 1.037 | 1.045 |
| Tensile Strength (MPa) | 33 | 34 | 36 | 40 | 30 |
| Impact Strength (MPa) | 5.4 | 5.7 | 6.2 | 6.5 | 5.3 |
| Expansion ratio | 15 times of | 15 times of | 18 times of | 18 times of | 15 times of |
| Molding shrinkage ratio | 1.2％ | 1％ | 0.8％ | 0.5％ | 2％ |
| Flame retardant rating UL94 | V0 | V0 | V0 | V0 | V1 |
| Wave-absorbing Property (dB) | -5.6～-14.5 | -6.7～-15.5 | -6.8～-16.6 | -8.6～-18.5 | -3.6～-12.5 |
The test results show that the wave-absorbing material can well improve the wave-absorbing performance, the flame retardant property, the mechanical property and the size stability by properly improving the addition of the metal micro-nano particles, and the formula can be adjusted according to actual requirements to meet the application requirements of different markets.
While specific embodiments of the invention have been described in detail above with reference to the drawings, the foregoing terminology, which is used for the purpose of describing the exemplary embodiments, is not necessarily intended to be exhaustive or to limit the invention. And the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The present invention is not limited to the above-described embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Such variations and modifications are intended to be within the scope of the invention as claimed.
Claims (10)
1. The foaming wave-absorbing material combining polypropylene and metal micro-nano particles is characterized in that: the wave-absorbing material comprises the following raw materials in parts by weight: 60-80 parts of polypropylene, 10-20 parts of wave absorbing agent, 3-10 parts of metal micro-nano particles, 8-15 parts of flame retardant, 1-5 parts of compatilizer, 0.1-1.5 parts of stabilizer, 0.3-3 parts of antioxidant and 0.3-3 parts of lubricant.
2. The foamed wave-absorbing material formed by combining polypropylene and metal micro-nano particles according to claim 1, which is characterized in that: the metal micro-nano particles are micro-nano particles of metals or metal oxides such as iron, aluminum, chromium, nickel, cobalt, manganese, antimony, indium and the like, and the particle size is 300-3000nm.
3. The foamed wave-absorbing material formed by combining polypropylene and metal micro-nano particles according to claim 2, which is characterized in that: the wave absorbing agent is at least one of conductive carbon black, acetylene black, graphite powder, graphene and carbon nano tubes.
4. The foamed wave-absorbing material formed by combining polypropylene and metal micro-nano particles according to claim 3, which is characterized in that: the flame retardant is an organic chlorine/bromide and a phosphorus/nitrogen compound, the organic chlorine/bromide is at least one of tetrabromoethane, tetrabromobutane, octabromoether or octabromobisphenol S ether, and the phosphorus/nitrogen compound is at least one of dimethyl methylphosphonate, tris (2-chloropropyl) phosphate and tris (2-chloroethyl) phosphate.
5. The polypropylene and metal micro-nano particle combined foaming wave-absorbing material according to claim 4, which is characterized in that: the compatilizer is at least one of polystyrene resin and polyethylene resin.
6. The polypropylene and metal micro-nano particle combined foaming wave-absorbing material according to claim 5, which is characterized in that: the stabilizer is one or more of benzophenones, benzotriazoles, triazines and hindered amines.
7. The polypropylene and metal micro-nano particle combined foaming wave-absorbing material according to claim 6, which is characterized in that: the antioxidant is at least one of hindered phenol antioxidant, phosphite antioxidant and thiosulfate antioxidant, and the lubricant is at least one of pentaerythritol stearate, calcium stearate, montan wax, polyethylene wax and zinc stearate.
8. The preparation method of the foamed wave-absorbing material combining polypropylene and metal micro-nano particles according to any one of claims 1 to 7, which is characterized by comprising the following steps: the preparation method comprises the following steps:
s1: taking polypropylene, a wave absorbing agent, metal micro-nano particles, a flame retardant, a compatilizer, a stabilizer, an antioxidant and a lubricant according to a proportion;
s2: adding the raw materials into a high-pressure blending pot, fully stirring and mixing, extruding micro particles through a double-screw extruder, and performing melt extrusion granulation to obtain the polypropylene and metal micro-nano particle composite material;
s3: uniformly mixing the polypropylene and metal micro-nano particle composite material with a chemical foaming agent, and performing secondary die sinking and injection molding to obtain a polypropylene and metal micro-nano particle composite foaming wave-absorbing material;
s4: and (3) preparing the obtained foamed wave-absorbing material into a flat plate or a pointed cone and other required shapes by using a forming machine, drying, cooling and testing the material performance.
9. The preparation method of the polypropylene and metal micro-nano particle combined foaming wave-absorbing material according to claim 8, characterized in that: in the step S2, the length-diameter ratio L: D of the double-screw extruder is 35-45, the rotating speed of the screw is 250-450r/min, and the feeding speed is 5-20rpm.
10. The preparation method of the polypropylene and metal micro-nano particle combined foaming wave-absorbing material according to claim 8, characterized in that: and S3, carrying out secondary die sinking and injection molding to obtain the polypropylene and metal micro-nano particle composite foaming wave-absorbing material, wherein the molding temperature is 200-250 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211687154.3A CN115873347A (en) | 2022-12-27 | 2022-12-27 | Foaming wave-absorbing material combining polypropylene and metal micro-nano particles and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211687154.3A CN115873347A (en) | 2022-12-27 | 2022-12-27 | Foaming wave-absorbing material combining polypropylene and metal micro-nano particles and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115873347A true CN115873347A (en) | 2023-03-31 |
Family
ID=85755632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211687154.3A Pending CN115873347A (en) | 2022-12-27 | 2022-12-27 | Foaming wave-absorbing material combining polypropylene and metal micro-nano particles and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115873347A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4508640A (en) * | 1981-11-24 | 1985-04-02 | Showa Denko Kabushiki Kaisha | Electromagnetic wave-shielding materials |
-
2022
- 2022-12-27 CN CN202211687154.3A patent/CN115873347A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4508640A (en) * | 1981-11-24 | 1985-04-02 | Showa Denko Kabushiki Kaisha | Electromagnetic wave-shielding materials |
Non-Patent Citations (2)
| Title |
|---|
| 胡书春等: "导电炭黑/磁性氧化物复合吸波剂的制备与表征", 材料导报, no. 02, pages 135 - 138 * |
| 贾瑛等: "轻质碳材料的应用", vol. 1, 30 November 2013, 国防工业出版社, pages: 222 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101481483B (en) | Antistatic teflon film and preparation thereof | |
| CN109054337A (en) | A kind of formula of Noryl expanded bead, preparation method and applications | |
| CN1995128A (en) | Conductive plastic material and its preparation method and application | |
| CN113105679B (en) | Corrugated pipe filling master batch, preparation method and application | |
| CN101722175A (en) | Method for producing thermoplastic plastics by recycling nonmetal materials of discarded printed circuit boards and related thermoplastic plastics | |
| CN111484681A (en) | Graphene modified antistatic polypropylene composite material and preparation method thereof | |
| CN115403861B (en) | Isotropic electromagnetic shielding polypropylene composite material and preparation and application thereof | |
| CN110818990A (en) | Preparation method of light slow-running shoe sole | |
| CN102863708B (en) | Modified renewable high impact polystyrene special material for household appliances and preparation method thereof | |
| CN111087730A (en) | Blow-moldable high-temperature water-soluble PVA particle composition and blow-moldable high-temperature water-soluble PVA particles | |
| CN113603921A (en) | Micro-foaming high-wave-permeability reinforced polypropylene material and preparation method thereof | |
| CN112694661A (en) | Electromagnetic shielding polypropylene composite material with heat conduction and wave absorption functions and preparation method thereof | |
| CN113652032B (en) | Automobile reinforced damping fin | |
| CN101696315A (en) | Nonmetal powder filled phenolic resin composite material and preparation method thereof | |
| CN115873347A (en) | Foaming wave-absorbing material combining polypropylene and metal micro-nano particles and preparation method thereof | |
| CN105175856A (en) | Regenerated polyolefine halogen-free flame-retardant environmental-friendly plastic foam and production method therefor | |
| CN111560141A (en) | Antistatic high-impact polypropylene mine car bearing end cover and preparation method thereof | |
| CN110713656B (en) | Polypropylene composite material and preparation method thereof | |
| CN108624187A (en) | A kind of preparation method of carbon nano-structured enhancing blast resistant surface material | |
| CN110467769A (en) | A kind of anti-oxidant high-density polyethylene composite material and preparation method thereof | |
| CN110922853A (en) | Heavy-duty anticorrosive polymer composite material with high Tg and preparation method thereof | |
| CN102372876B (en) | TPV material for highway isolation belt | |
| CN112321948B (en) | Silica aerogel-polypropylene light heat-insulating material and preparation method thereof | |
| CN103275375A (en) | Special material for hot spraying of ultra-high molecular weight polyethylene and preparation method thereof | |
| CN111269529A (en) | Marine environment resistant composite wave-absorbing material plastic master batch and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |