CN116589779B - Polyolefin halogen-free flame-retardant master batch - Google Patents
Polyolefin halogen-free flame-retardant master batch Download PDFInfo
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- CN116589779B CN116589779B CN202310883322.4A CN202310883322A CN116589779B CN 116589779 B CN116589779 B CN 116589779B CN 202310883322 A CN202310883322 A CN 202310883322A CN 116589779 B CN116589779 B CN 116589779B
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 97
- 229920000098 polyolefin Polymers 0.000 title claims abstract description 86
- 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 title claims abstract description 77
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 54
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 61
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000010439 graphite Substances 0.000 claims abstract description 57
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 57
- VLCLHFYFMCKBRP-UHFFFAOYSA-N tricalcium;diborate Chemical class [Ca+2].[Ca+2].[Ca+2].[O-]B([O-])[O-].[O-]B([O-])[O-] VLCLHFYFMCKBRP-UHFFFAOYSA-N 0.000 claims abstract description 47
- -1 polyethylene Polymers 0.000 claims abstract description 46
- 239000004698 Polyethylene Substances 0.000 claims abstract description 26
- 229920000573 polyethylene Polymers 0.000 claims abstract description 26
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 26
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 239000004743 Polypropylene Substances 0.000 claims abstract description 8
- 229920001155 polypropylene Polymers 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 41
- 238000002360 preparation method Methods 0.000 claims description 34
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 30
- 238000001816 cooling Methods 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 21
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 21
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 20
- 239000007864 aqueous solution Substances 0.000 claims description 20
- 239000000706 filtrate Substances 0.000 claims description 20
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims description 20
- 229920002545 silicone oil Polymers 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 claims description 16
- IMQLKJBTEOYOSI-UHFFFAOYSA-N Phytic acid Natural products OP(O)(=O)OC1C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C(OP(O)(O)=O)C1OP(O)(O)=O IMQLKJBTEOYOSI-UHFFFAOYSA-N 0.000 claims description 16
- 235000002949 phytic acid Nutrition 0.000 claims description 16
- 229940068041 phytic acid Drugs 0.000 claims description 16
- 239000000467 phytic acid Substances 0.000 claims description 16
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 15
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 15
- 238000010992 reflux Methods 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 12
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical class [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 7
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 6
- 229960003237 betaine Drugs 0.000 claims description 6
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 claims description 6
- MTEZSDOQASFMDI-UHFFFAOYSA-N 1-trimethoxysilylpropan-1-ol Chemical compound CCC(O)[Si](OC)(OC)OC MTEZSDOQASFMDI-UHFFFAOYSA-N 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- RNMDNPCBIKJCQP-UHFFFAOYSA-N 5-nonyl-7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-ol Chemical compound C(CCCCCCCC)C1=C2C(=C(C=C1)O)O2 RNMDNPCBIKJCQP-UHFFFAOYSA-N 0.000 claims 1
- 229910019142 PO4 Inorganic materials 0.000 claims 1
- 239000010452 phosphate Substances 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 abstract description 13
- 239000001301 oxygen Substances 0.000 abstract description 13
- 238000005452 bending Methods 0.000 abstract description 6
- 229920005989 resin Polymers 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 5
- 229920013716 polyethylene resin Polymers 0.000 abstract description 3
- 239000002861 polymer material Substances 0.000 abstract description 3
- 229920006124 polyolefin elastomer Polymers 0.000 abstract 2
- 150000008064 anhydrides Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 description 39
- 238000002485 combustion reaction Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
- 238000001125 extrusion Methods 0.000 description 11
- 239000011159 matrix material Substances 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 8
- 238000007599 discharging Methods 0.000 description 7
- 238000004898 kneading Methods 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 229910000000 metal hydroxide Inorganic materials 0.000 description 6
- 150000004692 metal hydroxides Chemical class 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000007822 coupling agent Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- WPEXVRDUEAJUGY-UHFFFAOYSA-B hexacalcium;(2,3,4,5,6-pentaphosphonatooxycyclohexyl) phosphate Chemical compound [Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])(=O)OC1C(OP([O-])([O-])=O)C(OP([O-])([O-])=O)C(OP([O-])([O-])=O)C(OP([O-])([O-])=O)C1OP([O-])([O-])=O WPEXVRDUEAJUGY-UHFFFAOYSA-B 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 239000004114 Ammonium polyphosphate Substances 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- 206010029350 Neurotoxicity Diseases 0.000 description 1
- 206010044221 Toxic encephalopathy Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 1
- 229920001276 ammonium polyphosphate Polymers 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 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
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 230000007135 neurotoxicity Effects 0.000 description 1
- 231100000228 neurotoxicity Toxicity 0.000 description 1
- 229920006113 non-polar polymer Polymers 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- XZTOTRSSGPPNTB-UHFFFAOYSA-N phosphono dihydrogen phosphate;1,3,5-triazine-2,4,6-triamine Chemical compound NC1=NC(N)=NC(N)=N1.OP(O)(=O)OP(O)(O)=O XZTOTRSSGPPNTB-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
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- 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
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- 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
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
-
- 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/387—Borates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A polyolefin halogen-free flame-retardant master batch belongs to the technical field of high polymer materials, and consists of polyolefin resin, modified expanded graphite, organic modified diatomite, modified calcium borate, polyethylene wax and anhydride grafted POE (polyolefin elastomer) Rong Jima; the impact strength of the sample prepared by mixing the master batch and the polyethylene resin according to the mass ratio of 1:8 is 17.8-18.5 kJ.m ‑2 The bending strength is 40.2-41.4 MPa, the tensile strength is 19.6-20.1 MPa, the oxygen index is 29-30, and the flame retardant grade is UL94V-0; the impact strength of the sample prepared by mixing the polypropylene resin and the polypropylene resin according to the mass ratio of 1:8 is 5.1 kJ.m ‑2 The bending strength is 50.3MPa, the tensile strength is 34.9MPa, the oxygen index is 32, and the flame retardant grade is UL94V-0.
Description
Technical Field
The invention relates to a polyolefin halogen-free flame-retardant master batch, belonging to the technical field of high polymer materials.
Background
Polyolefin is a general term for all homopolymers and copolymers mainly containing ethylene and propylene and mixtures thereof, and is widely applied to industries such as electric appliances, chemical industry, food, machinery, traffic and the like, and becomes one of chemical products indispensable in national economy. However, polyolefin is a flammable material, and has serious molten drop phenomenon during combustion, which is very easy to ignite other articles, resulting in serious fire accidents. The flame retardant of polyolefin still takes halogen flame retardant as the main material at present, the halogen flame retardant takes important place in the flame retardant field due to small addition amount and obvious flame retardant effect, especially the bromine flame retardant takes most of markets in the civil electrical appliance field. With the development and progress of society and the enhancement of environmental protection consciousness, halogen flame retardants gradually reduce the application scale due to the defects of large smoke amount, easy generation of a large amount of corrosivity, toxic gas and the like, and halogen-free flame retardance becomes a common consensus in the flame retardant industry.
The ideal halogen-free flame retardant for polyolefin generally meets the following requirements: the flame retardant has high flame retardant efficiency, good compatibility with polyolefin, no reduction of mechanical property, electrical property, weather resistance and the like of the polyolefin, good durability, no toxicity, no odor and no pollution, and no toxic and harmful substances under the condition of thermal decomposition in the flame retardant process. Halogen-free flame retardants for polyolefins which fully satisfy the above requirements are almost absent. This is mainly because polyolefin is a nonpolar polymer material, the groups contained in the molecular structure are nonpolar or very weak in polarity, while halogen-free flame retardants generally have stronger polarity, and natural barriers exist in compatibility of the two. Furthermore, the polyolefin is mainly composed of C and H, the combustion is particularly rapid due to the rich hydrocarbon content, and the carbon-binding rate is very low in the combustion process due to the highly saturated hydrocarbon structure, so that the spreading speed of molten drops and flame in the combustion of the polyolefin to the inside of the combustion polymer matrix is further increased. In order to find the halogen-free flame retardant which is high-efficiency, low-smoke and nontoxic and is suitable for polyolefin systems, scientific researchers do a great deal of work and develop a plurality of halogen-free flame retardants of different systems. The halogen-free flame retardant systems currently in common use are briefly listed below: 1. inorganic metal hydroxides typified by magnesium hydroxide and aluminum hydroxide. The inorganic metal hydroxide reduces combustion heat by self decomposition and dilutes oxygen, so that the flame retardant efficiency is low, and the content of the inorganic metal hydroxide is often more than 50%. Meanwhile, the polarity of the inorganic metal hydroxide is larger, and the compatibility of the inorganic metal hydroxide and the polyolefin matrix is poor, so that the inorganic metal hydroxide is difficult to disperse in the processing process and is easy to form mechanical stress points, and the mechanical property of the final product is obviously reduced; 2. the phosphorus-containing flame retardant has the defects of low neurotoxicity, low stability, poor water resistance, poor compatibility with polymers and relatively large influence on mechanical properties, so that the application is limited; 3. the composition of the expansion type flame retardant (IFR) mainly comprises phosphorus and nitrogen, combines the advantages of the two flame retardants, and has the characteristics of no toxicity, less smoke and the like. The phosphorus-based material forms an isolating film after being heated, and the nitrogen-based material is decomposed into water after being heated
And a gas, wherein the nitrogen-based decomposed gas contributes to the formation of foam-like carbon layers of the phosphorus-based. The foam carbon layer can play the roles of oxygen insulation and heat insulation, and can prevent molten drops. However, most of the materials used in the intumescent flame retardant have insufficient thermal stability, have pungent odor and mold corrosion during processing, are basically strong polar compounds, and have difficult technical problems to solve due to the compatibility with polyolefin.
Chinese patent CN112300466a discloses a polyolefin flame retardant masterbatch, and preparation method and application thereof, the preparation method comprises the following steps: (1) Adding soluble magnesium salt and aluminum salt into water to prepare solution A; (2) preparing a mixed alkali solution, which is denoted as solution B; (3) Mixing the solution A, the solution B and sodium dodecyl benzene sulfonate to obtain a solution C; (4) Aging, suction filtering, washing and drying the solution C to obtain modified LDH; (5) Mixing modified LDH, intumescent flame retardant, pentaerythritol, polyolefin, erucamide and antioxidant to obtain a mixture; (6) And extruding and granulating the mixture to obtain the polyolefin flame-retardant master batch. In the patent, a large amount of melamine pyrophosphate is added to improve the flame retardant property of polyolefin, which tends to greatly damage the mechanical property of polyolefin high polymer.
Chinese patent CN103012904a discloses a halogen-free flame retardant master batch, which comprises the following raw materials in parts by mass: halogen-free flame retardant: 30-80 parts; polyolefin carrier: 15-69.7 parts; silicone oil: 0.2-2 parts; coupling agent: 0.1-3 parts; during preparation, the raw materials are firstly weighed according to the proportion, then the polyolefin carrier, the silicone oil and the coupling agent are added into a high-speed stirrer to be stirred for 3min at a low speed, and finally the halogen-free flame retardant is added to be stirred for 5min at a high speed; and (3) transferring the stirred raw materials into a two-stage vacuum double-screw extruder, extruding and granulating, wherein the temperature of the extruder is set to be 100-130 ℃. The air source used in the patent is ammonium polyphosphate, the polarity is strong, the compatibility with the polyolefin matrix is poor, and finally, the polyolefin high polymer with excellent comprehensive performance is difficult to obtain.
The above can be seen that the halogen-free flame retardant used in the polyolefin field still has the problem that the flame retardance and the comprehensive performance are difficult to be simultaneously considered, and how to prepare the high flame retardant polyolefin polymer under the condition of not losing the comprehensive performance is a problem in the industry which needs to be solved by material researchers.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a polyolefin halogen-free flame-retardant master batch, which realizes the following aims: the polyolefin halogen-free flame retardant master batch with high flame retardant property is prepared, and the polyolefin high polymer obtained by using the flame retardant master batch has good comprehensive performance under the condition of excellent flame retardant property.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
the specific formula of the polyolefin halogen-free flame-retardant master batch comprises the following components in parts by weight:
50-80 parts of polyolefin resin,
20-35 parts of modified expanded graphite,
8-15 parts of organic modified diatomite,
3-7 parts of modified calcium borate,
1-2.5 parts of polyethylene wax,
Adding Rong Jima maleic anhydride grafted POE 4-8 parts;
the polyolefin resin is polyethylene or polypropylene;
the following is a further improvement of the above technical scheme:
step 1, preparation of modified expanded graphite
Mixing expanded graphite, 3-isocyanatopropyl triethoxysilane and toluene according to a mass ratio of 20-50:1-4:95-139, controlling the temperature to be 110-135 ℃, carrying out reflux reaction for 3-5.5 hours under the condition of stirring speed to be 250-550 r/min, then adding hydroxyl silicone oil, continuing stirring and reflux reaction for 8-11 hours, cooling to room temperature, filtering, washing filtrate with acetone for 2-4 times, and drying in an oven at 70-90 ℃ for 1-2.5 hours to obtain modified expanded graphite;
the particle size of the expanded graphite is 300-500 meshes;
the adding amount of the hydroxyl silicone oil is 6-15wt% of the mass of the expanded graphite;
the hydroxyl silicone oil has a hydroxyl content of 1-3wt% and a viscosity of 400-900 mPa.s.
Step 2, preparation of organic modified diatomite
Mixing diatomite and a phytic acid aqueous solution according to a mass ratio of 1:5-9, stirring for 12-16 hours at a stirring rate of 300-500 r/min, standing for 36-50 hours, filtering, placing the filtrate in a vacuum oven at 30-45 ℃ for drying for 8-13 hours, placing the dried filtrate in a saturated calcium hydroxide aqueous solution, stirring for reacting for 9-14 hours at a stirring rate of 350-500 r/min at a temperature of 0-8 ℃, filtering, placing the filtered solid in an oven at 70-85 ℃ for drying for 10-14 hours to obtain fluffy powder, mixing the fluffy powder, toluene and gamma-glycidol ether oxypropyl trimethoxysilane according to a mass ratio of 25-40:120-160:4-9, controlling the temperature to be 110-130 ℃ for reflux reaction for 4-7 hours at a stirring rate of 350-600 r/min, cooling to room temperature, filtering, and naturally airing the filtrate to obtain the organically modified diatomite;
the particle size of the diatomite is 350-550 meshes;
the mass concentration of the phytic acid in the phytic acid aqueous solution is 35-50wt%;
the addition amount of the saturated calcium hydroxide aqueous solution is 7-10 times of the mass of the diatomite.
Step 3, preparation of modified calcium borate
Calcium borate, polyoxyethylene nonylphenol phosphate, perfluoroalkyl betaine, deionized water and absolute ethyl alcohol are mixed according to the mass ratio of 25-45:3-9:1-5:90-130:10-25, the temperature is controlled to be 35-50 ℃, the stirring speed is 170-420 r/min, the mixture is stirred and reacted for 6-9 hours, centrifugal separation is carried out, the obtained solid is washed for 2-4 times by acetone, and the obtained solid is dried for 1-2 hours at 75-90 ℃ to obtain modified calcium borate;
the particle size of the calcium borate is 600-1000 meshes.
Step 4, preparation of polyolefin halogen-free flame-retardant master batch
According to a specific formula of the polyolefin halogen-free flame-retardant master batch in parts by weight, placing polyolefin resin, modified expanded graphite, organic modified diatomite, modified calcium borate, polyethylene wax and compatibilizer maleic anhydride grafted POE into a high-speed kneader, kneading for 25-40 minutes at a rotation speed of 80-120 r/min, discharging when the temperature of materials in the kneader rises to 100-110 ℃, placing the materials into a double-screw extrusion granulator, controlling the rotation speed of 150-300 r/min, controlling the temperature of a first area of a screw to be 60-90 ℃, controlling the temperature of a second area to be 120-135 ℃ and the temperature of a third area to be 140-150 ℃ and the temperature of a die orifice of a machine head to be 140-150 ℃, cooling the materials by a water tank after extruding, and introducing the materials into a granulator for granulating after cooling the materials into the granulator to obtain the polyolefin halogen-free flame-retardant master batch.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, 3-isocyanatopropyl triethoxysilane and hydroxyl silicone oil are used for carrying out surface modification on the expanded graphite, so that the surface polarity of the expanded graphite is greatly reduced, the affinity between the expanded graphite and a polyolefin matrix is stronger, and the uniform dispersion degree of the expanded graphite in the polyolefin matrix is promoted, so that the performance of the polyolefin resin is not influenced, and in the polyolefin combustion process, the uniformly dispersed expanded graphite can form a compact carbon layer with larger coverage area after being heated and expanded, and the molten drops of polyolefin can be effectively prevented and the spreading speed of flame to the matrix can be reduced;
2. the diatomite selected in the invention has the advantages of low heat conductivity, good heat insulation, large specific surface area and loose and porous internal structure still maintained in a high-temperature state, and can cooperatively reduce the speed of conducting combustion heat into the polyolefin matrix after being matched with the expanded graphite, prevent oxygen from entering, and greatly reduce the combustion intensity of the polyolefin matrix. In addition, the high adsorptivity of the diatomite is utilized, the phytic acid is firstly adsorbed into micropores of the diatomite and then reacts with the calcium hydroxide to generate the calcium phytate complex, and when the polyolefin polymer burns, the thermal expansion of the calcium phytate complex can expand the volume of the diatomite, so that the heat conductivity of the diatomite is further reduced, and the heat insulation effect of a heat insulation layer formed by the diatomite on heat is better;
3. according to the invention, the calcium borate is subjected to surface modification by using two substances, namely the polyoxyethylene nonylphenol phosphate and the perfluoroalkyl betaine, the polarity of the modified calcium borate is reduced, the compatibility with polyolefin is enhanced, and test data show that the incorporation of the modified calcium borate has no negative effect on the mechanical properties of the polyolefin. The calcium borate slowly releases crystal water after being heated to absorb a large amount of heat, the temperature of a polyolefin combustion surface is reduced, meanwhile, the released water dilutes the air around the combustion surface in a steam form, the oxygen concentration is reduced, the combustion rate is inhibited, in addition, boron oxide formed by decomposition of the calcium borate is a glass-like substance, and the glass-like substance has the function of isolating heat and oxygen like expanded graphite and diatomite, so that the calcium borate, the expanded graphite and the diatomite can have a synergistic flame retardant effect, and the flame retardant performance of a polyolefin matrix is improved to the greatest extent;
4. the impact strength of the sample prepared by mixing the polyolefin halogen-free flame-retardant master batch prepared by the invention and polyethylene resin according to the mass ratio of 1:8 is 17.8-18.5 kJ.m -2 The bending strength is 40.2-41.4 MPa, the tensile strength is 19.6-20.1 MPa, the oxygen index is 29-30, and the flame retardant grade is UL94V-0; the impact strength of the sample prepared by mixing the polypropylene resin and the polypropylene resin according to the mass ratio of 1:8 is 5.1 kJ.m -2 The bending strength is 50.3MPa, the tensile strength is 34.9MPa, the oxygen index is 32, and the flame retardant grade is UL94V-0.
Drawings
FIG. 1 is an SEM image of a polyolefin halogen-free flame-retardant masterbatch obtained in example 1;
FIG. 2 is an SEM image of a polyolefin halogen-free flame-retardant masterbatch obtained in example 3.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and explanation only and is not intended to limit the present invention.
Example 1: polyolefin halogen-free flame-retardant master batch
Step 1, preparation of modified expanded graphite
Mixing expanded graphite, 3-isocyanatopropyl triethoxysilane and toluene according to a mass ratio of 35:3:125, controlling the temperature to 125 ℃, carrying out reflux reaction at a stirring rate of 400 r/min for 4 hours, then adding hydroxyl silicone oil, continuously stirring and carrying out reflux reaction for 9 hours, cooling to room temperature, filtering, washing filtrate with acetone for 3 times, and drying in an oven at 85 ℃ for 2 hours to obtain modified expanded graphite;
the particle size of the expanded graphite is 450 meshes;
the adding amount of the hydroxyl silicone oil is 11wt% of the mass of the expanded graphite;
the hydroxyl silicone oil had a hydroxyl group content of 2wt% and a viscosity of 700 mPas.
Step 2, preparation of organic modified diatomite
Mixing diatomite and phytic acid aqueous solution according to a mass ratio of 1:8, stirring for 13 hours at a stirring rate of 360 r/min, standing for 45 hours, filtering, putting the filtrate into a vacuum oven at 35 ℃ for drying for 10 hours, putting the dried filtrate into a saturated calcium hydroxide aqueous solution, controlling the temperature to be 5 ℃, stirring for reacting for 12 hours at a stirring rate of 400 r/min, filtering, putting the filtered solid into an oven at 80 ℃ for drying for 13 hours to obtain fluffy powder, mixing the fluffy powder, toluene and gamma-glycidol ether oxypropyl trimethoxysilane according to a mass ratio of 35:145:7, controlling the temperature to be 125 ℃, refluxing for reacting for 6 hours at a stirring rate of 550 r/min, cooling to room temperature, filtering, and naturally airing the filtrate to obtain organic modified diatomite;
the particle size of the diatomite is 400 meshes;
the mass concentration of the phytic acid in the phytic acid aqueous solution is 45wt%;
the addition amount of the saturated calcium hydroxide aqueous solution is 9 times of the mass of the diatomite.
Step 3, preparation of modified calcium borate
Calcium borate, polyoxyethylene nonylphenol phosphate, perfluoroalkyl betaine, deionized water and absolute ethyl alcohol are mixed according to the mass ratio of 30:7:4:110:23, the temperature is controlled to 40 ℃, the stirring speed is 250 r/min, the mixture is stirred and reacted for 7 hours, centrifugal separation is carried out, the obtained solid is washed for 3 times by acetone, and the solid is dried for 1.4 hours at 85 ℃ to obtain modified calcium borate;
the particle size of the calcium borate is 900 meshes.
Step 4, preparation of polyolefin halogen-free flame-retardant master batch
The specific formula of the polyolefin halogen-free flame-retardant master batch comprises the following components in parts by weight:
70 parts of polyolefin resin,
30 parts of modified expanded graphite,
10 parts of organic modified diatomite,
6 parts of modified calcium borate,
2 parts of polyethylene wax,
Adding Rong Jima maleic anhydride grafted POE 7 parts;
the polyolefin resin is polyethylene;
according to a specific formula of the polyolefin halogen-free flame-retardant master batch in parts by weight, placing polyolefin resin, modified expanded graphite, organic modified diatomite, modified calcium borate, polyethylene wax and compatibilizer maleic anhydride grafted POE into a high-speed kneader, kneading for 30 minutes at a rotational speed of 110 revolutions per minute, discharging when the temperature of the materials in the kneader rises to 106 ℃, then placing the materials into a double-screw extrusion granulator, controlling the rotational speed of the double-screw to 230 revolutions per minute, controlling the temperature of a first region of the screw to 80 ℃, controlling the temperature of a second region to 130 ℃, controlling the temperature of a third region to 145 ℃, controlling the temperature of a head die to 145 ℃, cooling the materials by a water tank, cooling the materials by air, and introducing the materials into a granulator for granulating to obtain the polyolefin halogen-free flame-retardant master batch.
Example 2: polyolefin halogen-free flame-retardant master batch
Step 1, preparation of modified expanded graphite
Mixing expanded graphite, 3-isocyanatopropyl triethoxysilane and toluene according to a mass ratio of 20:1:95, controlling the temperature to 110 ℃, carrying out reflux reaction at a stirring speed of 250 r/min for 3 hours, then adding hydroxyl silicone oil, continuously stirring and carrying out reflux reaction for 8 hours, cooling to room temperature, filtering, washing filtrate with acetone for 2 times, and drying in a 70 ℃ oven for 1 hour to obtain modified expanded graphite;
the particle size of the expanded graphite is 300 meshes;
the adding amount of the hydroxyl silicone oil is 6wt% of the mass of the expanded graphite;
the hydroxyl silicone oil had a hydroxyl group content of 1wt% and a viscosity of 400 mPas.
Step 2, preparation of organic modified diatomite
Mixing diatomite and phytic acid aqueous solution according to a mass ratio of 1:5, stirring for 12 hours at a stirring rate of 300 r/min, standing for 36 hours, filtering, putting the filtrate into a vacuum oven at 30 ℃ for drying for 8 hours, putting the dried filtrate into a saturated calcium hydroxide aqueous solution, controlling the temperature to be 0 ℃, stirring for reacting for 9 hours at a stirring rate of 350 r/min, filtering, putting the filtered solid into an oven at 70 ℃ for drying for 10 hours to obtain fluffy powder, mixing the fluffy powder, toluene and gamma-glycidol ether oxypropyl trimethoxysilane according to a mass ratio of 25:120:4, controlling the temperature to be 110 ℃, refluxing for reacting for 4 hours at a stirring rate of 350 r/min, cooling to room temperature, filtering, and naturally airing the filtrate to obtain organic modified diatomite;
the particle size of the diatomite is 350 meshes;
the mass concentration of the phytic acid in the phytic acid aqueous solution is 35wt%;
the addition amount of the saturated calcium hydroxide aqueous solution is 7 times of the mass of the diatomite.
Step 3, preparation of modified calcium borate
Calcium borate, polyoxyethylene nonylphenol phosphate, perfluoroalkyl betaine, deionized water and absolute ethyl alcohol are mixed according to a mass ratio of 25:3:1:90:10, the temperature is controlled to 35 ℃, the stirring speed is 170 r/min, the mixture is stirred and reacted for 6 hours, centrifugal separation is carried out, the obtained solid is washed for 2 times by acetone, and the obtained solid is dried for 1 hour at 75 ℃ to obtain modified calcium borate;
the particle size of the calcium borate is 600 meshes.
Step 4, preparation of polyolefin halogen-free flame-retardant master batch
The specific formula of the polyolefin halogen-free flame-retardant master batch comprises the following components in parts by weight:
50 parts of polyolefin resin,
20 parts of modified expanded graphite,
8 parts of organic modified diatomite,
3 parts of modified calcium borate,
1 part of polyethylene wax,
Adding Rong Jima maleic anhydride grafted POE 4 parts;
the polyolefin resin is polyethylene;
according to a specific formula of the polyolefin halogen-free flame-retardant master batch in parts by weight, placing polyolefin resin, modified expanded graphite, organic modified diatomite, modified calcium borate, polyethylene wax and compatibilizer maleic anhydride grafted POE into a high-speed kneader, kneading for 25 minutes at a rotation speed of 80 revolutions per minute, discharging when the temperature of the materials in the kneader is raised to 100 ℃, then placing the materials into a double-screw extrusion granulator, controlling the rotation speed of 150 revolutions per minute of the double-screw, controlling the temperature of a first region of the screw to be 60 ℃, controlling the temperature of a second region to be 120 ℃, controlling the temperature of a third region to be 140 ℃, controlling the temperature of a die head to be 140 ℃, cooling the materials by a water tank after extrusion, and introducing the materials into a granulator for granulating after air cooling to obtain the polyolefin halogen-free flame-retardant master batch.
Example 3: polyolefin halogen-free flame-retardant master batch
Step 1, preparation of modified expanded graphite
Mixing expanded graphite, 3-isocyanatopropyl triethoxysilane and toluene according to a mass ratio of 50:4:139, controlling the temperature to 135 ℃, carrying out reflux reaction at a stirring rate of 550 r/min for 5.5 hours, then adding hydroxyl silicone oil, continuously carrying out reflux reaction for 11 hours, cooling to room temperature, filtering, washing filtrate with acetone for 4 times, and drying in a 90 ℃ oven for 2.5 hours to obtain modified expanded graphite;
the particle size of the expanded graphite is 500 meshes;
the adding amount of the hydroxyl silicone oil is 15wt% of the mass of the expanded graphite;
the hydroxyl silicone oil had a hydroxyl group content of 3wt% and a viscosity of 900 mPas.
Step 2, preparation of organic modified diatomite
Mixing diatomite and phytic acid aqueous solution according to the mass ratio of 1:9, stirring for 16 hours at the stirring speed of 500 r/min, standing for 50 hours, filtering, putting the filtrate into a vacuum oven at 45 ℃ for drying for 13 hours, putting the dried filtrate into a saturated calcium hydroxide aqueous solution, controlling the temperature to 8 ℃, stirring for reacting for 14 hours at the stirring speed of 500 r/min, filtering, putting the filtered solid into an oven at 85 ℃ for drying for 14 hours to obtain fluffy powder, mixing the fluffy powder, toluene and gamma-glycidol ether oxypropyl trimethoxysilane according to the mass ratio of 40:160:9, controlling the temperature to 130 ℃, refluxing for reacting for 7 hours at the stirring speed of 600 r/min, cooling to room temperature, filtering, and naturally airing the filtrate to obtain the organically modified diatomite;
the particle size of the diatomite is 550 meshes;
the mass concentration of the phytic acid in the phytic acid aqueous solution is 50wt%;
the addition amount of the saturated calcium hydroxide aqueous solution is 10 times of the mass of the diatomite.
Step 3, preparation of modified calcium borate
Calcium borate, polyoxyethylene nonylphenol phosphate, perfluoroalkyl betaine, deionized water and absolute ethyl alcohol are mixed according to the mass ratio of 45:9:5:130:25, the temperature is controlled to be 50 ℃, the stirring speed is 420 turns/min, the mixture is stirred and reacted for 9 hours, centrifugal separation is carried out, the obtained solid is washed for 4 times by acetone, and the obtained solid is dried for 2 hours at 90 ℃ to obtain modified calcium borate;
the particle size of the calcium borate is 1000 meshes.
Step 4, preparation of polyolefin halogen-free flame-retardant master batch
The specific formula of the polyolefin halogen-free flame-retardant master batch comprises the following components in parts by weight:
80 parts of polyolefin resin,
35 parts of modified expanded graphite,
15 parts of organic modified diatomite,
7 parts of modified calcium borate,
2.5 parts of polyethylene wax,
Adding Rong Jima maleic anhydride grafted POE 8 parts;
the polyolefin resin is polypropylene;
according to a specific formula of the polyolefin halogen-free flame-retardant master batch in parts by weight, placing polyolefin resin, modified expanded graphite, organic modified diatomite, modified calcium borate, polyethylene wax and compatibilizer maleic anhydride grafted POE into a high-speed kneader, kneading for 40 minutes at a rotational speed of 120 revolutions per minute, discharging when the temperature of the material in the kneader is raised to 110 ℃, then placing the material into a double-screw extrusion granulator, controlling the rotational speed of the double-screw to 300 revolutions per minute, controlling the temperature of a first region of the screw to 90 ℃, controlling the temperature of a second region to 135 ℃, controlling the temperature of a third region to 150 ℃, controlling the temperature of a head die to 150 ℃, cooling the material by a water tank after extrusion, and introducing the material into a granulator for granulating after air cooling to obtain the polyolefin halogen-free flame-retardant master batch.
Comparative example 1: based on the embodiment 1, the preparation of the modified expanded graphite in the step 1 is not carried out, and in the preparation of the polyolefin halogen-free flame retardant master batch in the step 4, 30 parts of modified expanded graphite is replaced by 30 parts of expanded graphite in equal quantity, and the specific operation is as follows:
step 1, preparing modified expanded graphite is not carried out;
steps 2 and 3 are the same as in example 1;
step 4, preparation of polyolefin halogen-free flame-retardant master batch
The specific formula of the polyolefin halogen-free flame-retardant master batch comprises the following components in parts by weight:
70 parts of polyolefin resin,
30 parts of expanded graphite,
10 parts of organic modified diatomite,
6 parts of modified calcium borate,
2 parts of polyethylene wax,
Adding Rong Jima maleic anhydride grafted POE 7 parts;
the polyolefin resin is polyethylene;
the particle size of the expanded graphite is 450 meshes;
according to a specific formula of the polyolefin halogen-free flame-retardant master batch in parts by weight, placing polyolefin resin, expanded graphite, organic modified diatomite, modified calcium borate, polyethylene wax and compatibilizer maleic anhydride grafted POE into a high-speed kneader, kneading for 30 minutes at a rotational speed of 110 revolutions per minute, discharging when the temperature of the materials in the kneader rises to 106 ℃, then placing the materials into a double-screw extrusion granulator, controlling the rotational speed of the double-screw to 230 revolutions per minute, controlling the temperature of a first region of the screw to 80 ℃, controlling the temperature of a second region to 130 ℃, controlling the temperature of a third region to 145 ℃, controlling the temperature of a machine head die to 145 ℃, cooling the materials by a water tank, cooling the materials by air, and introducing the materials into a granulator to form granules to obtain the polyolefin halogen-free flame-retardant master batch.
Comparative example 2: based on the example 1, the preparation of the organic modified diatomite in the step 2 is not carried out, and in the preparation of the polyolefin halogen-free flame retardant master batch in the step 4, 10 parts of the organic modified diatomite is replaced by 10 parts of diatomite in equal quantity, and the specific operation is as follows:
step 1 the procedure is as in example 1;
step 2, preparation of organic modified diatomite is not carried out;
step 3 the procedure is as in example 1;
step 4, preparation of polyolefin halogen-free flame-retardant master batch
The specific formula of the polyolefin halogen-free flame-retardant master batch comprises the following components in parts by weight:
70 parts of polyolefin resin,
30 parts of modified expanded graphite,
10 parts of diatomite,
6 parts of modified calcium borate,
2 parts of polyethylene wax,
Adding Rong Jima maleic anhydride grafted POE 7 parts;
the polyolefin resin is polyethylene;
the particle size of the diatomite is 400 meshes;
according to a specific formula of the polyolefin halogen-free flame-retardant master batch in parts by weight, placing polyolefin resin, modified expanded graphite, diatomite, modified calcium borate, polyethylene wax and compatibilizer maleic anhydride grafted POE into a high-speed kneader, kneading for 30 minutes at a rotation speed of 110 revolutions per minute, discharging when the temperature of materials in the kneader rises to 106 ℃, then placing the materials into a double-screw extrusion granulator, controlling the rotation speed of the double screws to 230 revolutions per minute, controlling the temperature of a first region of the screws to 80 ℃, controlling the temperature of a second region to 130 ℃, controlling the temperature of a third region to 145 ℃, controlling the temperature of a die opening of a machine head to 145 ℃, cooling the materials by a water tank after extrusion, cooling the materials by air, and introducing the materials into a granulator to form granules to obtain the polyolefin halogen-free flame-retardant master batch.
Comparative example 3: based on the embodiment 1, the preparation of the modified calcium borate in the step 3 is not carried out, the modified calcium borate is not added in the preparation of the halogen-free flame retardant master batch of the polyolefin in the step 4, and 6 parts of modified calcium borate is replaced by 6 parts of polyolefin resin in equal quantity, and the specific operation is as follows:
steps 1 and 2 are the same as in example 1;
step 3, preparation of modified calcium borate is not carried out;
step 4, preparation of polyolefin halogen-free flame-retardant master batch
The specific formula of the polyolefin halogen-free flame-retardant master batch comprises the following components in parts by weight:
76 parts of polyolefin resin,
30 parts of modified expanded graphite,
10 parts of organic modified diatomite,
2 parts of polyethylene wax,
Adding Rong Jima maleic anhydride grafted POE 7 parts;
the polyolefin resin is polyethylene;
according to a specific formula of the polyolefin halogen-free flame-retardant master batch in parts by weight, placing polyolefin resin, modified expanded graphite, organic modified diatomite, polyethylene wax and compatibilizer maleic anhydride grafted POE into a high-speed kneader, kneading for 30 minutes at a rotation speed of 110 revolutions per minute, discharging when the temperature of materials in the kneader is raised to 106 ℃, then placing the materials into a double-screw extrusion granulator, controlling the rotation speed of the double screws to 230 revolutions per minute, controlling the temperature of a first region of the screws to 80 ℃, controlling the temperature of a second region to 130 ℃, controlling the temperature of a third region to 145 ℃, controlling the temperature of a die opening of a machine head to 145 ℃, cooling the materials by a water tank after extrusion, cooling the materials by air, and introducing the materials into a granulator for granulating to obtain the polyolefin halogen-free flame-retardant master batch.
Performance test:
the polyolefin halogen-free flame retardant master batches obtained in examples 1 and 2 and comparative examples 1, 2 and 3 are mixed with polyethylene resin according to a mass ratio of 1:8 to prepare a test sample, the polyolefin halogen-free flame retardant master batch obtained in example 3 is mixed with polypropylene resin according to a mass ratio of 1:8 to prepare the test sample, an injection molding process is adopted in the sample preparation process, a double-screw injection molding machine is adopted in equipment, and the technological parameters of the injection molding machine are as follows: the feeding section is 100 ℃, the compression section is 170 ℃, the homogenization section is 190 ℃, the injection molding die is 185 ℃, and the injection molding pressure is 7MPa;
testing the notch impact strength of a sample according to GB/T1043-1993 rigid plastic simply supported beam impact test method;
testing the bending strength of the test sample according to GB 1042-1979 Plastic bending test method;
tensile strength of test specimens was tested according to GB/T1040-1992 Plastic tensile test method;
oxygen index of test specimens according to GB/T2406-1993 test method for Plastic Combustion Performance;
evaluating the flame retardant rating of the experiment according to UL94 flame retardant rating test criteria;
the specific test results are shown in Table 1:
TABLE 1
| Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| Impact Strength (kJ.m) -2 ） | 18.5 | 17.8 | 5.1 | 9.7 | 12.2 | 18.8 |
| Flexural Strength (MPa) | 41.4 | 40.2 | 50.3 | 23.2 | 31.6 | 41.9 |
| Tensile Strength (MPa) | 20.1 | 19.6 | 34.9 | 6.8 | 11.5 | 20.7 |
| Oxygen index | 29 | 30 | 32 | 21 | 24 | 26 |
| Flame retardant rating | UL94V-0 | UL94V-0 | UL94V-0 | UL94V-2 | UL94V-2 | UL94V-1 |
As can be seen from the data in table 1, the mechanical properties and flame retardant properties of comparative example 1 are most severely reduced compared with those of examples 1 and 2, and it is seen that the expanded graphite is difficult to uniformly disperse into the polyethylene body without modification, which not only makes it difficult to exert the flame retardant efficacy of the expanded graphite, but also causes a significant reduction in the mechanical properties of the polyethylene; the diatomite in the comparative example 2 is not subjected to surface modification, and the dispersion uniformity of the diatomite is difficult to ensure, so that the mechanical property of the comparative example 2 is obviously lower than that of the examples 1 and 2, and the oxygen index and the flame retardant level are obviously reduced; comparative example 3, to which no modified calcium borate was added, had mechanical properties comparable to those of examples 1 and 2, which indicated that the modified calcium borate of examples 1 and 2 was uniformly dispersed in the polyethylene matrix, and comparative example 3 had an oxygen index and a flame retardant rating significantly lower than those of examples 1 and 2, which indicated that the modified calcium borate had a significant synergistic effect with respect to flame retardance with expanded graphite and diatomaceous earth.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. A polyolefin halogen-free flame-retardant master batch is characterized in that:
the specific formula of the polyolefin halogen-free flame-retardant master batch comprises the following components in parts by weight:
50-80 parts of polyolefin resin,
20-35 parts of modified expanded graphite,
8-15 parts of organic modified diatomite,
3-7 parts of modified calcium borate,
1-2.5 parts of polyethylene wax,
Adding Rong Jima maleic anhydride grafted POE 4-8 parts;
the preparation method of the modified expanded graphite comprises the following steps: mixing expanded graphite, 3-isocyanatopropyl triethoxysilane and toluene according to a mass ratio of 20-50:1-4:95-139, controlling the temperature to be 110-135 ℃, carrying out reflux reaction for 3-5.5 hours under the condition of stirring speed to be 250-550 r/min, then adding hydroxyl silicone oil, continuing stirring and reflux reaction for 8-11 hours, cooling to room temperature, filtering, washing filtrate with acetone for 2-4 times, and drying in an oven at 70-90 ℃ for 1-2.5 hours to obtain modified expanded graphite;
the preparation method of the organic modified diatomite comprises the following steps: mixing diatomite and a phytic acid aqueous solution according to a mass ratio of 1:5-9, stirring for 12-16 hours at a stirring rate of 300-500 r/min, standing for 36-50 hours, filtering, placing the filtrate in a vacuum oven at 30-45 ℃ for drying for 8-13 hours, placing the dried filtrate in a saturated calcium hydroxide aqueous solution, stirring for reacting for 9-14 hours at a stirring rate of 350-500 r/min at a temperature of 0-8 ℃, filtering, placing the filtered solid in an oven at 70-85 ℃ for drying for 10-14 hours to obtain fluffy powder, mixing the fluffy powder, toluene and gamma-glycidol ether oxypropyl trimethoxysilane according to a mass ratio of 25-40:120-160:4-9, controlling the temperature to be 110-130 ℃ for reflux reaction for 4-7 hours at a stirring rate of 350-600 r/min, cooling to room temperature, filtering, and naturally airing the filtrate to obtain the organically modified diatomite;
the preparation method of the modified calcium borate comprises the following steps: and (3) mixing calcium borate, polyoxyethylene nonylphenol ether phosphate, perfluoroalkyl betaine, deionized water and absolute ethyl alcohol according to a mass ratio of 25-45:3-9:1-5:90-130:10-25, controlling the temperature to be 35-50 ℃, stirring at a stirring rate of 170-420 r/min, stirring for 6-9 hours, centrifuging, washing the obtained solid with acetone for 2-4 times, and drying at 75-90 ℃ for 1-2 hours to obtain the modified calcium borate.
2. The polyolefin halogen-free flame retardant masterbatch according to claim 1, characterized in that:
the polyolefin resin is polyethylene or polypropylene;
the particle size of the expanded graphite is 300-500 meshes;
the adding amount of the hydroxyl silicone oil is 6-15wt% of the mass of the expanded graphite;
the hydroxyl silicone oil has a hydroxyl content of 1-3wt% and a viscosity of 400-900 mPa.s.
3. The polyolefin halogen-free flame retardant masterbatch according to claim 1, characterized in that:
the particle size of the diatomite is 350-550 meshes;
the mass concentration of the phytic acid in the phytic acid aqueous solution is 35-50wt%;
the addition amount of the saturated calcium hydroxide aqueous solution is 7-10 times of the mass of the diatomite.
4. The polyolefin halogen-free flame retardant masterbatch according to claim 1, characterized in that:
the particle size of the calcium borate is 600-1000 meshes.
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| CN104194572A (en) * | 2014-09-25 | 2014-12-10 | 芜湖县双宝建材有限公司 | Anti-corrosion and flame retardant coating |
| CN106065088A (en) * | 2016-06-06 | 2016-11-02 | 同济大学 | A kind of preparation method of the modified expanded graphite being grafted silicon P elements |
| CN110183728A (en) * | 2019-06-28 | 2019-08-30 | 金旸（厦门）新材料科技有限公司 | A kind of in-situ polymerization expansion type flame retardant and prepare raw material and its preparation method and application |
| DE102019124471A1 (en) * | 2019-09-11 | 2021-03-11 | Chaoyang University Of Technology | Flame-retardant polymer composite material and its manufacturing process |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194572A (en) * | 2014-09-25 | 2014-12-10 | 芜湖县双宝建材有限公司 | Anti-corrosion and flame retardant coating |
| CN106065088A (en) * | 2016-06-06 | 2016-11-02 | 同济大学 | A kind of preparation method of the modified expanded graphite being grafted silicon P elements |
| CN110183728A (en) * | 2019-06-28 | 2019-08-30 | 金旸（厦门）新材料科技有限公司 | A kind of in-situ polymerization expansion type flame retardant and prepare raw material and its preparation method and application |
| DE102019124471A1 (en) * | 2019-09-11 | 2021-03-11 | Chaoyang University Of Technology | Flame-retardant polymer composite material and its manufacturing process |
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