CN106317447A - Fire-retardant polypropylene foam wave absorbing composite material and method for preparing same - Google Patents
Fire-retardant polypropylene foam wave absorbing composite material and method for preparing same Download PDFInfo
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- CN106317447A CN106317447A CN201610692705.3A CN201610692705A CN106317447A CN 106317447 A CN106317447 A CN 106317447A CN 201610692705 A CN201610692705 A CN 201610692705A CN 106317447 A CN106317447 A CN 106317447A
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- polypropylene
- composite material
- fire retardant
- polypropylene foam
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- -1 polypropylene Polymers 0.000 title claims abstract description 147
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 132
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 130
- 239000003063 flame retardant Substances 0.000 title claims abstract description 96
- 239000006260 foam Substances 0.000 title claims abstract description 54
- 239000002131 composite material Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 47
- 229920005989 resin Polymers 0.000 claims abstract description 47
- 239000011324 bead Substances 0.000 claims abstract description 30
- 238000005187 foaming Methods 0.000 claims abstract description 23
- 239000006096 absorbing agent Substances 0.000 claims abstract description 14
- 239000002270 dispersing agent Substances 0.000 claims abstract description 13
- 239000004094 surface-active agent Substances 0.000 claims abstract description 12
- 239000004088 foaming agent Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000004925 Acrylic resin Substances 0.000 claims description 42
- 229920000178 Acrylic resin Polymers 0.000 claims description 42
- 238000002485 combustion reaction Methods 0.000 claims description 38
- 239000010985 leather Substances 0.000 claims description 23
- 238000002360 preparation method Methods 0.000 claims description 23
- 239000011358 absorbing material Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 12
- 230000004927 fusion Effects 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 10
- 238000005453 pelletization Methods 0.000 claims description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims description 7
- 239000011574 phosphorus Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims description 5
- 239000007822 coupling agent Substances 0.000 claims description 5
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 claims description 5
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- VONWDASPFIQPDY-UHFFFAOYSA-N dimethyl methylphosphonate Chemical compound COP(C)(=O)OC VONWDASPFIQPDY-UHFFFAOYSA-N 0.000 claims description 3
- RVHSTXJKKZWWDQ-UHFFFAOYSA-N 1,1,1,2-tetrabromoethane Chemical group 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
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 2
- 239000000347 magnesium hydroxide Substances 0.000 claims description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 2
- 239000012188 paraffin wax Substances 0.000 claims description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims 1
- 125000001246 bromo group Chemical class Br* 0.000 claims 1
- 150000003016 phosphoric acids Chemical class 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 86
- 239000008187 granular material Substances 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 239000012792 core layer Substances 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 4
- 238000011049 filling Methods 0.000 abstract description 2
- 239000011258 core-shell material Substances 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 238000009991 scouring Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 24
- 230000000694 effects Effects 0.000 description 15
- 238000010521 absorption reaction Methods 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- 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 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 229920002521 macromolecule Polymers 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 206010000269 abscess Diseases 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical group [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 239000001506 calcium phosphate Substances 0.000 description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 description 2
- 235000011010 calcium phosphates Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000001404 mediated effect Effects 0.000 description 2
- XFZRQAZGUOTJCS-UHFFFAOYSA-N phosphoric acid;1,3,5-triazine-2,4,6-triamine Chemical compound OP(O)(O)=O.NC1=NC(N)=NC(N)=N1 XFZRQAZGUOTJCS-UHFFFAOYSA-N 0.000 description 2
- 230000000979 retarding effect Effects 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 2
- 238000005406 washing Methods 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
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical group C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000004643 cyanate ester Substances 0.000 description 1
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- HXEQSCUBDIKNLN-UHFFFAOYSA-N ditert-butyl ethanediperoxoate Chemical compound CC(C)(C)OOC(=O)C(=O)OOC(C)(C)C HXEQSCUBDIKNLN-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012757 flame retardant agent Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/126—Polymer particles coated by polymer, e.g. core shell structures
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
-
- 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
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention provides a method for preparing a fire-retardant polypropylene foam wave absorbing composite material. The method includes steps of mixing and treating polypropylene resin A and wave absorbing agents and then melting and plasticizing the polypropylene resin A and the wave absorbing agents on an extruder for forming core layers so as to obtain molten resin for the core layers; mixing and treating polypropylene resin B and first flame retardants and melting and plasticizing the polypropylene resin B and the first flame retardants on an extruder for forming covering layers so as to obtain molten resin for the covering layers; extruding and granulating the molten resin for the core layers and the molten resin for the covering layers to obtain core-shell structural type polypropylene beads with the core layers and the covering layers; adding the core-shell structural type polypropylene beads, foaming agents, dispersing agents and surfactants into a reaction kettle and preparing polypropylene wave absorbing foam granules by means of foaming by the aid of kettle pressure processes; filling forming molds with the polypropylene wave absorbing foam granules and forming the fire-retardant polypropylene foam wave absorbing composite material by means of steam scouring under heating and pressurizing conditions.
Description
Technical field
The invention belongs to functional composite material field, be specifically related to a kind of flame-retarding wave-absorbing functional composite material, particularly relate to
A kind of difficult combustion polypropylene foam Wave suction composite material and preparation method thereof.
Background technology
Wave suction composite material is a kind of energy converting function material, it is possible to effectively absorb electromagnetic wave, and by by electromagnetism
Energy is converted into heat energy or makes electromagnetic wave be lost by interfering or scatter.Wave suction composite material is mainly by wave absorbing agent and matrix material
Material composition, wherein wave absorbing agent is used for absorbing and being lost electromagnetic wave, and matrix material is usually macromolecular material, such as the epoxy of heat curing-type
Resin, phenolic resin, cyanate ester resin and thermoplastic polyethylene, polypropylene and polystyrene, matrix material acts primarily as bonding
And the effect of carrying.
Anti-flammability is important performance indications of absorbing material.Due to the employing of conventional expansion type Wave suction composite material
Reisn base material is combustible material, typically improves its fire resistance by interpolation fire retardant.
Expanded polypropylene (EPP) is a kind of with high bath strength acrylic resin as base material, by physical blowing or chemistry
What foaming obtained a kind of has independent hole-closing structure, the foamed materials of controlled expansion ratio, due to its lightweight, tough, solvent resistant
Property and the feature of environmental protection, the New Radar Absorbing composite with expanded polypropylene as matrix material is used widely in recent years.But due to
Polypropylene is hydrocarbon macromolecular compound, easily burns, and belongs to combustible material.It is loose structure plus expanded polypropylene, material
Under the conditions of naked light, the inflammable and intensity of a fire easily spreads.As when the application of electromagnetic arts, expanded polypropylene absorbing material can be with electricity
Line, conductive cable contacts, when leaky occurs in circuit, material is easy to be ignited, and causes fire.Prior art generally uses
The mode adding fire retardant during acrylic resin extruding pelletization gives expanded polypropylene fire resistance, but, directly
The finished product flame retardancy performance that addition method obtains is the best, finished product as more excellent in fire resistance to be obtained, then need to add the most fire-retardant
Agent, this can affect foaming effect and the abscess quality in material later stage to a great extent.Also can additionally, retardant load level is excessive
Affect the material list appearance quality after molding and mechanical property.
For polypropylene foam, especially as electro-magnetic wave absorption high connductivity expanded polypropylene composite and
Speech, the difficult problem do not captured for a long time in its fire-retardant problem industry class especially.First, amount of flame-retardant agent and coating layer thickness need to strictly be controlled
System, to avoid it to affect the electromagnetic absorption performance of material.Additionally, polypropylene molecule structure is carbon-carbon skeletal chain, side base is methyl,
Molecular polarity is more weak, and general macromole film forming matter is easy to fall off on its surface, and fire retardant is in its surface attachment difficulty.Therefore, poly-
The flame retarding process of acryl foam absorbing material need to strictly be investigated.
Comparing cladding process, the flame retarding process to polypropylene material is grouped as adding fire retardant at pelletization stage at present.As, logical
Cross interpolation expansion type flame retardant so that the goods obtained have good flame retardant effect, but material itself does not carry out foaming also
Not there is absorbing property, therefore cannot function as absorbing material；Ye You enterprise uses phosphorus flame retardant to obtain expanded material, obtains
The oxygen index (OI) that has of expanded material more than 28% but the relatively big (0.5g/cm of expansion density3Above), some expansion density and anti-flammability
Can be the best, do not provide expansion density and fire-retardant evaluation, and it is all not related to absorbing property.Additionally, be such as intended to be hindered
The finished product that combustion performance is more excellent, then need to add a large amount of fire retardant, after the interpolation of a large amount of fire retardants can affect material to a great extent
The foaming effect of phase and abscess quality.
Summary of the invention
It is an object of the invention to provide a kind of difficult combustion polypropylene foam Wave suction composite material and preparation method thereof, it is intended to solve
Certainly existing polypropylene foam is difficult to have concurrently electro-magnetic wave absorption performance and the problem of fire resistance of excellence.
The present invention is achieved in that the preparation method of a kind of difficult combustion polypropylene foam Wave suction composite material, including following
Step:
Prepare core-leather block configuration polypropylene bead: after acrylic resin A and wave absorbing agent, auxiliary agent mixed processing, be used for
Form fusion plastification on the extruder of sandwich layer, obtain sandwich layer molten resin；By acrylic resin B, the first fire retardant mixed processing
After, for forming fusion plastification on the extruder of cover layer, obtain cover layer molten resin；By described sandwich layer molten resin and
Cover layer molten resin carries out extruding pelletization, obtains including the core-leather block configuration polypropylene bead of sandwich layer and cover layer；
Prepare polypropylene and inhale ripple bubble grain: by described core-leather block configuration polypropylene bead, foaming agent, dispersant, surface activity
Agent adds in reactor, prepares polypropylene by still platen press foaming and inhales ripple bubble grain；
Prepare polypropylene foam absorbing material: described polypropylene is inhaled ripple bubble grain and is filled in mould, add in heating
By steam flush molding under the conditions of pressure, obtain difficult combustion polypropylene foam absorbing material.
And, the difficult combustion polypropylene foam Wave suction composite material that a kind of said method prepares.
Difficult combustion polypropylene foam Wave suction composite material that the present invention provides and preparation method thereof, by preparing core-skin structure
Type polypropylene bead, on the one hand, owing to sandwich layer need not add fire retardant, thus it is guaranteed that the addition of wave absorbing agent, so that
The polypropylene foam composite that must obtain has the electro-magnetic wave absorption performance of excellence；On the other hand, on this basis, by inciting somebody to action
Acrylic resin B, the first fire retardant are mixed with cover layer so that each polypropylene particles surface has fire retardant, thus
Fire resistance that polypropylene foam Wave suction composite material excellent is effectively ensured, and the utilization rate of fire retardant is high.Thus obtained
Polypropylene foam, on the premise of ensureing excellent electro-magnetic wave absorption performance, has the performance of difficult combustion.
Detailed description of the invention
In order to make the technical problem to be solved in the present invention, technical scheme and beneficial effect clearer, below in conjunction with
Embodiment, is further elaborated to the present invention.Should be appreciated that specific embodiment described herein is only in order to explain this
Invention, is not intended to limit the present invention.
Embodiments provide the preparation method of a kind of difficult combustion polypropylene foam Wave suction composite material, including following step
Rapid:
S01. core-leather block configuration polypropylene bead is prepared: after acrylic resin A and wave absorbing agent mixed processing, be used for
Form fusion plastification on the extruder of sandwich layer, obtain sandwich layer molten resin；By acrylic resin B, the first fire retardant mixed processing
After, for forming fusion plastification on the extruder of cover layer, obtain cover layer molten resin；By described sandwich layer molten resin and
Cover layer molten resin carries out extruding pelletization, obtains including the core-leather block configuration polypropylene bead of sandwich layer and cover layer；
S02. prepare polypropylene and inhale ripple bubble grain: by described core-leather block configuration polypropylene bead, foaming agent, dispersant, surface
Activating agent adds in reactor, prepares polypropylene by still platen press foaming and inhales ripple bubble grain；
S03. polypropylene foam absorbing material is prepared: described polypropylene is inhaled ripple bubble grain and is filled in mould, adding
By steam flush molding under hot pressurized conditions, obtain difficult combustion polypropylene foam absorbing material.
Concrete, in above-mentioned steps S01, described core-leather block configuration polypropylene bead refer to by cortex (i.e. cover layer) and
The acrylic resin particle of sandwich layer composition.Described core-leather block configuration polypropylene bead can be prepared by following method.
S011. by after acrylic resin A and wave absorbing agent mixed processing, for forming melted on the extruder of sandwich layer moulding
Change, obtain sandwich layer molten resin；
S012. by after acrylic resin B, the first fire retardant mixed processing, molten for being formed on the extruder of cover layer
Melt plasticizing, obtain cover layer molten resin；
S013. described sandwich layer molten resin and cover layer molten resin are carried out extruding pelletization, obtain including sandwich layer and covering
The core of cap rock-leather block configuration polypropylene bead.
Concrete, in above-mentioned steps S011, described acrylic resin A is carried out mixed processing with wave absorbing agent and can use often
The hybrid mode of rule realizes, in order to ensure that each component is uniformly dispersed, it is preferred to use high speed mixer mix homogeneously.Wherein, described
Conducting particles includes but not limited to conductive black.Owing to described sandwich layer molten resin particularly can hinder without other auxiliary agents
Combustion agent, therefore, the content of its wave absorbing agent improves relatively, thus can ensure absorbing property.Certainly, described sandwich layer molten resin can wrap
Include at least one in nucleator, stabilizer, coupling agent, antioxidant.
Material after mixing is joined the extruder for forming sandwich layer and carries out fusion plastification, obtain the melted tree of sandwich layer
Fat.Wherein, described extruder can be double screw extruder, and the temperature of described extruder is 160-220 DEG C, thereby guarantees that each component
Energy is uniformly dispersed under molten condition.
In above-mentioned steps S012, by described acrylic resin B, the first fire retardant mixed processing, the mixed of routine can be used
Conjunction mode realizes, in order to ensure that each component is uniformly dispersed, it is preferred to use high speed mixer mix homogeneously.Preferably, described first
The addition of fire retardant is satisfied: the weight ratio of described first fire retardant and described acrylic resin B is (8-15): 100.This is excellent
The addition of choosing, can form one layer of cover layer with fire resistance, can guarantee that again not on described sandwich layer molten resin surface
The effect of follow-up foaming can be affected because the composition of fire retardant is too high, and then affect the absorbing property of material.
Described first fire retardant preferably has the fire retardant of the preferable compatibility with described acrylic resin B such that it is able to more
Add and be evenly dispersed in described acrylic resin B, and then form the cover layer molten resin of stable performance.It is concrete preferred,
Described first fire retardant is at least one in aqueous metal-oxide, organochlorine/bromide, phosphorus/compound nitrogen series, wherein,
Described aqueous metal-oxide includes but not limited to that magnesium hydroxide, aluminium hydroxide, preferred above-mentioned aqueous metal-oxide can lead to
Cross release water of crystallization when being heated, generate steam and play the effect of heat absorption isolation；Described organochlorine/bromide includes but not limited to
Chlorinated paraffin, deca-BDE (DBPO), three (1,2-dibromopropyl) fulminuric acid ester (TBC), preferred above-mentioned organochlorine/
Bromide combustor can produce plastic-aluminum free radical, can catch the free radical that macromolecule burning produces, and interrupts the combustion of high molecular chain type
Burn, and play fire retardation with the generation of hydrone；Described phosphorus/compound nitrogen series include but not limited to APP (APP),
Melamine phosphate (MPP), preferred above-mentioned phosphorus/compound nitrogen series can generate Metaphosphoric acid by strong dehydration and make macromolecule
Superficial charring, and the charring layer that can generate insulating effect covers at macromolecule surface, tissue burning is carried out further.Should manage
Solving, above-mentioned first fire retardant can single use, it is also possible to multiple compound use, to reach the flame retardant effect of excellence.
It is further preferred that the fusing point that the fusing point of described acrylic resin A is higher than described acrylic resin B.Thus, a side
Face, it is ensured that when foaming, cover layer has the sandwich layer that the most melted extensibility expands with cladding, on the other hand, permissible
Ensure during subsequent forming, on the premise of the described acrylic resin A being in sandwich layer is not melted, be coated on expanded beads
The described cover layer on surface is in molten condition, by melted described acrylic resin B molding bonded between expanded beads.For
There is more preferable effect, it is furthermore preferred that the fusing point difference of described acrylic resin A and described acrylic resin B is 15-45 DEG C.
Further preferred, when preparing described cover layer molten resin, add nucleator, stabilizer, coupling agent, resist
At least one in oxygen agent, is used for improving its overall performance, certainly, adds auxiliary agent and be not limited to this.
Material after mixing is joined the extruder for forming cover layer and carries out fusion plastification, obtain cover layer and melt
Resin.Wherein, described extruder can be double screw extruder, and the temperature of described extruder is 160-190 DEG C, thereby guarantees that each group
Divide in energy and be uniformly dispersed under molten condition.
As the preferred embodiment of the present invention, the thickness of described cover layer is 5-50 μm.If the thickness of described cover layer is blocked up,
On the one hand, the relative amount of described first fire retardant is the highest, then, in following foaming process, described foaming agent can not effectively ooze
Penetrate into into sandwich layer, largely affect foaming effect and the abscess quality in material later stage, and then affect absorbing property；The opposing party
Face, if the thickness of described cover layer is the thinnest, can not well be coated with in sandwich layer, and forming process each when cover layer can be caused to foam
Bond between polypropylene expanded granule not strong, and molding poor effect.
In above-mentioned steps S013, after sandwich layer and cover layer molten resin are mediated completely, by described layer molten resin with cover
Cap rock molten resin feeds to co-extrusion die, carries out extruding pelletization so that for forming the molten resin of described cover layer
Line stream is centered around the molten resin line stream for forming described sandwich layer, and is laminated therewith, little by the die orifice of coextrusion machine
Hole, extrudes molten resin compositions, through traction, under water cooling, pelletizing, obtains including the core-skin structure of sandwich layer and cover layer
Type polypropylene bead.
Thus obtained described core-leather block configuration polypropylene bead, comprises foamable sandwich layer and the most expandable or can be micro-
(poor owing to there is fusing point between acrylic resin A and B, resin can show in heating melting process and differ the cover layer of foaming
The viscoelasticity of sample, the relation between expansiveness (i.e. foaminess) and himself viscoelasticity of cover layer resin, it is not enough to/is suitable for
Make it keep or form swelling state, then can get core layer foaming and structure that cover layer does not foams).Wherein, described sandwich layer
Including acrylic resin A, wave absorbing agent and conducting particles；Described cover layer includes acrylic resin B, the first fire retardant.
In above-mentioned steps S02, prepare polypropylene by still platen press foaming and inhale ripple bubble grain.Concrete, by described core-skin structure
Type polypropylene bead is equipped with in the autoclave of water, dispersant, surfactant, is passed through foamed gas and stirs, and rises
Temperature, to blowing temperature, reaches pressurize 15-20min, then constant voltage discharging after blow pressure, cleans, obtains polypropylene suction after drying
Ripple bubble grain.Wherein, the temperature that foaming processes is 145-148 DEG C, and pressure is 2.55-4.7Mpa.Preferably, described dispersant is phosphorus
Acid calcium, described surfactant is dodecyl sodium sulfate.It is further preferred that in order to obtain more preferable dispersion effect, can add
Entering dispersing aid, concrete, described dispersing aid is magnesium chloride.Above-mentioned preferred each component, can be produced by the most collaborative
Dispersibility is more preferable, and ripple bubble grain inhaled by electric conductivity, overall stability more preferably polypropylene.
In the embodiment of the present invention, in the described core obtained after above-mentioned steps S01-leather block configuration polypropylene bead, institute
State the first fire retardant and be formed at the surface of described core-leather block configuration polypropylene bead, and inside core-leather block configuration polypropylene bead
Do not have fire resistance.Preferably, in order to improve fire resistance further so that ripple bubble intragranular portion inhaled by the polypropylene after foaming
Between possess anti-flammability (i.e. polypropylene inhale ripple bubble grain hole all contain fire retardant), the embodiment of the present invention is being sent out by still platen press
When ripple bubble grain inhaled by brewed standby described polypropylene, described reactor adds the second fire retardant of liquid, thus further from source
Achieve described polypropylene on head and inhale the anti-flammability of ripple bubble grain itself.Second fire retardant of described liquid can be by described dispersion
Agent and described surfactant are dispersed in suspension.During foaming, along with temperature-pressure, acrylic resin granule is in melted
State, the second fire retardant of described liquid penetrates into inside the PP GRANULES of molten state together with described foaming agent, thus, it is possible to
Obtain the more excellent polypropylene of fire resistance and inhale ripple bubble grain.
Preferably, the addition of described second fire retardant meets: described second fire retardant and described core-leather block configuration poly-third
The weight ratio of alkene beadlet is (5-20): 100.This preferred addition, can be effectively ensured institute while improving flame retardant effect
State polypropylene and inhale the foaming effect of ripple bubble grain.
It is further preferred that in order to effectively penetrate into inside described PP GRANULES, described second fire retardant is
The fire retardant of low-molecular-weight, the most preferably, described second fire retardant is tetrabromoethane, tetrabromobutane, or phosphoric acid ester
In dimethyl methyl phosphonate (DMMP), tricresyl phosphate (2-chlorine third) ester (TCPP), tricresyl phosphate (2-chloroethene) ester (TCEP) at least one
Kind.This most described second fire retardant, is liquid combustion inhibitor, can mix all with described dispersant, surfactant very well
Even, particularly form uniform suspension with calcium phosphate, dodecyl sodium sulfate, and then preferably penetrate into the polypropylene of molten state
Inside granule.
In above-mentioned steps S03, described polypropylene is inhaled ripple bubble grain and is filled in mould, can be filled into by normality
Mould is shaped, it is also possible to by carrying pressure in advance or being filled in mould with the state of compression
Type.Preferably, use the mode carrying pressure in advance to be inhaled by described polypropylene after ripple bubble grain internal pressure increases to fill to mould.Excellent
The pressure filling mode of load in advance of choosing, on the one hand, described polypropylene can be recovered and inhale ripple bubble grain in transportation because colliding or squeezing
The deformation that pressure produces；On the other hand, by carrying pressure in advance, the pressure that the high pressure applied suddenly in forming process causes can be slowed down
The deformation that difference causes, prevents described polypropylene from inhaling the excess shrinkage of ripple bubble grain.
In the embodiment of the present invention, in order to further improve the fire resistance of polypropylene foam absorbing material, preferably exist
Prepare addition the 3rd fire retardant in the step of polypropylene foam absorbing material.Concrete, described steam is containing the 3rd fire retardant
Steam, and described 3rd fire retardant be can with water formed azeotropic mixture fire retardant.Selection can be with the resistance of water formation azeotropic mixture
Combustion agent so that it is form fire retardant-water azeotropic mixture steam under the conditions of certain pressure, and then by polypropylene described in mould is inhaled
Washing away of ripple bubble grain so that described 3rd fire retardant infiltrates in the internal void of expanded beads and the gap of granule or granule,
And then make, inside the expanded polypropylene absorbing material after molding, there is fire resistance.The addition of described 3rd fire retardant meets
Azeotropic mixture can be formed with water under forming temperature and pressure.
Concrete, before using steam flush, adjust the feed system of steam, make water and described 3rd fire retardant be formed mixed
Fit system, pressurized, heated makes described 3rd fire retardant form azeotropic mixture with described water, enters mould in the way of steam.
The embodiment of the present invention can select to add fire retardant in above-mentioned steps S01, S02, S03, add according to actual needs
Add process flexible, and the absorbing property of material can not be affected.
And, the embodiment of the present invention additionally provides the difficult combustion polypropylene foam that a kind of said method prepares and inhales ripple and be combined
Material.
Concrete, described difficult combustion polypropylene foam Wave suction composite material by described core-leather block configuration polypropylene bead foaming,
Molding prepares, and wherein, described core-leather block configuration polypropylene bead referred to by gathering that cortex (i.e. cover layer) and sandwich layer form
Allyl resin particle, specifically comprises foamable sandwich layer and the most expandable or can the cover layer of fretting map.Wherein, described sandwich layer bag
Include acrylic resin A, wave absorbing agent；Described cover layer includes acrylic resin B, fire retardant.Preferably, described acrylic resin A
Fusing point higher than the fusing point of described acrylic resin B.It is further preferred that described sandwich layer and/or described cover layer also include into
At least one in core agent, stabilizer, coupling agent, antioxidant.
Further, the described difficult combustion particle surface of polypropylene foam Wave suction composite material, particulate interspaces and granule
Fire retardant is all contained in inside.
Difficult combustion polypropylene foam Wave suction composite material that the embodiment of the present invention provides and preparation method thereof, by prepare core-
Leather block configuration polypropylene bead, on the one hand, owing to sandwich layer need not add fire retardant, thus it is guaranteed that the addition of wave absorbing agent,
So that the polypropylene foam composite obtained has the electro-magnetic wave absorption performance of excellence；On the other hand, on this basis,
By acrylic resin B, the first fire retardant are mixed with cover layer so that each polypropylene particles surface has fire-retardant
Agent, thus fire resistance that polypropylene foam Wave suction composite material excellent has been effectively ensured, and the utilization rate of fire retardant is high.Thus
The polypropylene foam obtained, on the premise of ensureing excellent electro-magnetic wave absorption performance, has the performance of difficult combustion.
Below, it is illustrated in connection with specific embodiments.
Embodiment 1
The preparation method of a kind of difficult combustion polypropylene foam Wave suction composite material, comprises the following steps:
S11. core-leather block configuration polypropylene bead is prepared: by acrylic resin A, conductive black, nucleator mixed processing
After, for forming fusion plastification on the Twin screw extruder of sandwich layer, obtain sandwich layer molten resin, wherein, extruder temperature is
160-220℃；After acrylic resin B, the first fire retardant mixed processing, at the Twin screw extruder for forming cover layer
Fusion plastification, obtains cover layer molten resin, and wherein, extruder temperature is 160-190 DEG C；Treat described sandwich layer and described cover layer
Molten resin mediated and, described sandwich layer molten resin and cover layer molten resin are carried out extruding pelletization, through traction, under water
Obtain including the core-leather block configuration polypropylene bead of sandwich layer and cover layer after cooling, pelletizing；In this step, described polypropylene tree
The type of fat A, conductive black, acrylic resin B, the consumption of the first fire retardant and the first fire retardant such as table 1 embodiment 1 institute
Show；
S12. prepare polypropylene and inhale ripple bubble grain: just electrically conductive particles is equipped with water, dispersant calcium phosphate, dispersing aid chlorine
Change in the autoclave of magnesium, surfactant sodium dodecyl base sodium sulfonate, the second fire retardant, be passed through foamed gas such as carbon dioxide
And open stirring, it is warming up to blowing temperature, reaches pressurize 15-20min, then constant voltage discharging after blow pressure, clean, be dried,
Obtain the flame-retardant conductive polypropylene particles of foaming；In this step, described dispersant, dispersing aid, surfactant, foaming gas
The type of body, the consumption of the second fire retardant and the second fire retardant is as shown in table 2 embodiment 1；
S13. polypropylene foam absorbing material is prepared: described polypropylene is inhaled ripple bubble grain in the way of carrying pressure, is filled into molding
In mould, before carrying out steam and washing away, adjust the feed system of steam, make the 3rd fire retardant of water and liquid by a definite proportion
Example forms homogeneous system, and under certain pressure during heating, the 3rd fire retardant can form azeotropic mixture with water, enters in the way of steam
Mould, to be formed complete after, obtain difficult combustion polypropylene foam absorbing material.
Embodiment 2
The preparation method of a kind of difficult combustion polypropylene foam Wave suction composite material is same as in Example 1, wherein, and described polypropylene
The type of Resin A, conductive black, acrylic resin B, the consumption of the first fire retardant and the first fire retardant such as table 1 embodiment 2 institute
Show；Described dispersant, dispersing aid, surfactant, foamed gas, the consumption of the second fire retardant and the class of the second fire retardant
Type is as shown in table 2 embodiment 2.
Embodiment 3
The preparation method of a kind of difficult combustion polypropylene foam Wave suction composite material is same as in Example 1, wherein, and described polypropylene
The type of Resin A, conductive black, acrylic resin B, the consumption of the first fire retardant and the first fire retardant such as table 1 embodiment 3 institute
Show；Described dispersant, dispersing aid, surfactant, foamed gas, the consumption of the second fire retardant and the class of the second fire retardant
Type is as shown in table 2 embodiment 3.
Embodiment 4
The preparation method of a kind of difficult combustion polypropylene foam Wave suction composite material is same as in Example 1, wherein, and described polypropylene
The type of Resin A, conductive black, acrylic resin B, the consumption of the first fire retardant and the first fire retardant such as table 1 embodiment 4 institute
Show；Described dispersant, dispersing aid, surfactant, foamed gas, the consumption of the second fire retardant and the class of the second fire retardant
Type is as shown in table 2 embodiment 4.
Embodiment 5
The preparation method of a kind of difficult combustion polypropylene foam Wave suction composite material is same as in Example 1, wherein, and described polypropylene
The type of Resin A, conductive black, acrylic resin B, the consumption of the first fire retardant and the first fire retardant such as table 1 embodiment 5 institute
Show；Described dispersant, dispersing aid, surfactant, foamed gas, the consumption of the second fire retardant and the class of the second fire retardant
Type is as shown in table 2 embodiment 5.
Table 1
Table 2
Difficult combustion polypropylene foam Wave suction composite material embodiment 1-5 prepared carries out oxygen index (OI) and absorbing property is surveyed
Examination, wherein oxygen index (OI) test uses GB2406.2-2009, absorbing property test to use GJB5239-2004.With embodiment 3 it is
Example, the performance test results of its oxygen index (OI) and characteristic electromagnetic wave-absorbing property is as shown in table 3, from table 3: the polypropylene of preparation
Foamed product has good fire resistance, and oxygen index (OI) is 27.6%, and electro-magnetic wave absorption performance has in frequency range 0.6-18GHz
Outstanding reflection of electromagnetic wave rate, and reach maximum reflectivity-65dB at 4GHz characteristic frequency point.
Table 3
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (10)
1. a preparation method for difficult combustion polypropylene foam Wave suction composite material, comprises the following steps:
Prepare core-leather block configuration polypropylene bead: by after acrylic resin A and wave absorbing agent mixed processing, form sandwich layer being used for
Extruder on fusion plastification, obtain sandwich layer molten resin；After acrylic resin B, the first fire retardant mixed processing, it is being used for
Form fusion plastification on the extruder of cover layer, obtain cover layer molten resin；Described sandwich layer molten resin and cover layer are melted
Melt resin carries out extruding pelletization, obtains including the core-leather block configuration polypropylene bead of sandwich layer and cover layer；
Prepare polypropylene and inhale ripple bubble grain: described core-leather block configuration polypropylene bead, foaming agent, dispersant, surfactant are added
Enter in reactor, prepare polypropylene by still platen press foaming and inhale ripple bubble grain；
Prepare polypropylene foam absorbing material: described polypropylene is inhaled ripple bubble grain and is filled in mould, add press strip in heating
By steam flush molding under part, obtain difficult combustion polypropylene foam absorbing material.
2. the preparation method of difficult combustion polypropylene foam Wave suction composite material as claimed in claim 1, it is characterised in that passing through
When described polypropylene suction ripple bubble grain is prepared in the foaming of still platen press, described reactor adds the second fire retardant of liquid.
3. the preparation method of difficult combustion polypropylene foam Wave suction composite material as claimed in claim 1, it is characterised in that in preparation
In the step of polypropylene foam absorbing material, described steam is the steam containing the 3rd fire retardant.
4. the preparation method of the difficult combustion polypropylene foam Wave suction composite material as described in claim 1-3 is arbitrary, it is characterised in that
The fusing point of the described acrylic resin A fusing point higher than described acrylic resin B.
5. the preparation method of the difficult combustion polypropylene foam Wave suction composite material as described in claim 1-3 is arbitrary, it is characterised in that
The weight ratio of described first fire retardant and described acrylic resin B is (8-15): 100；And/or
Described first fire retardant is at least one in aqueous metal-oxide, organochlorine/bromide, phosphorus/compound nitrogen series, its
In, described aqueous metal-oxide includes magnesium hydroxide, aluminium hydroxide；Described organochlorine/bromide bag chlorinated paraffin, ten bromines two
Phenylate, three (1,2-dibromopropyl) fulminuric acid ester；Described phosphorus/compound nitrogen series includes APP, tripolycyanamide phosphoric acid
Salt.
6. the preparation method of combustion polypropylene foam Wave suction composite material as claimed in claim 2 difficult, it is characterised in that described the
The weight ratio of two fire retardants and described core-leather block configuration polypropylene bead is (5-20): 100；And/or
Described second fire retardant is tetrabromoethane, tetrabromobutane, dimethyl methyl phosphonate, tricresyl phosphate (2-chlorine third) ester, tricresyl phosphate
At least one in (2-chloroethene) ester.
7. the preparation method of combustion polypropylene foam Wave suction composite material as claimed in claim 3 difficult, it is characterised in that described the
Three fire retardants are can be with the fire retardant of water formation azeotropic mixture.
8. the preparation method of the difficult combustion polypropylene foam Wave suction composite material as described in claim 1-3 is arbitrary, it is characterised in that
The thickness of described cover layer is 5-50 μm.
9. the preparation method of the difficult combustion polypropylene foam Wave suction composite material as described in claim 1-3 is arbitrary, it is characterised in that
When preparing described sandwich layer molten resin, add at least one in nucleator, stabilizer, coupling agent, antioxidant；And/or
When preparing described cover layer molten resin, add at least one in nucleator, stabilizer, coupling agent, antioxidant.
10. the difficult combustion polypropylene foam Wave suction composite material that a method as described in claim 1-9 is arbitrary prepares.
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Application publication date: 20170111 |
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