CN115044137B - Composition for preparing polypropylene material, application thereof, polypropylene material and preparation method and application thereof - Google Patents
Composition for preparing polypropylene material, application thereof, polypropylene material and preparation method and application thereof Download PDFInfo
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- CN115044137B CN115044137B CN202110258437.5A CN202110258437A CN115044137B CN 115044137 B CN115044137 B CN 115044137B CN 202110258437 A CN202110258437 A CN 202110258437A CN 115044137 B CN115044137 B CN 115044137B
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- Prior art keywords
- styrene
- composition
- butadiene
- propylene
- block copolymer
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- -1 polypropylene Polymers 0.000 title claims abstract description 137
- 239000000203 mixture Substances 0.000 title claims abstract description 87
- 239000000463 material Substances 0.000 title claims abstract description 72
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 62
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title claims abstract description 53
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims description 77
- 229920005604 random copolymer Polymers 0.000 claims description 67
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical class C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 claims description 62
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 60
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 30
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 28
- 239000005977 Ethylene Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 26
- 238000005984 hydrogenation reaction Methods 0.000 claims description 22
- 239000003963 antioxidant agent Substances 0.000 claims description 20
- 230000003078 antioxidant effect Effects 0.000 claims description 20
- 239000002253 acid Substances 0.000 claims description 12
- 239000006096 absorbing agent Substances 0.000 claims description 9
- 239000000155 melt Substances 0.000 claims description 9
- 239000000654 additive Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000002667 nucleating agent Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 6
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 5
- 239000012748 slip agent Substances 0.000 claims description 5
- 125000003118 aryl group Chemical group 0.000 claims description 4
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 4
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical group CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 claims description 3
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 3
- BGHBLQKNCVRIKV-UHFFFAOYSA-N OP(O)OP(O)O.OCC(CO)(CO)CO.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)O.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)O Chemical compound OP(O)OP(O)O.OCC(CO)(CO)CO.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)O.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)O BGHBLQKNCVRIKV-UHFFFAOYSA-N 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 3
- 239000000600 sorbitol Substances 0.000 claims description 3
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims description 2
- 235000021355 Stearic acid Nutrition 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical group CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 2
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims description 2
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 2
- 239000008117 stearic acid Substances 0.000 claims description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims 1
- 239000007983 Tris buffer Substances 0.000 claims 1
- 230000002087 whitening effect Effects 0.000 abstract description 16
- 238000006116 polymerization reaction Methods 0.000 description 47
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 31
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 31
- 239000000178 monomer Substances 0.000 description 25
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 20
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 20
- 229910052739 hydrogen Inorganic materials 0.000 description 20
- 239000001257 hydrogen Substances 0.000 description 20
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 18
- 239000010936 titanium Substances 0.000 description 17
- 239000003054 catalyst Substances 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 15
- 229920000428 triblock copolymer Polymers 0.000 description 13
- 238000009472 formulation Methods 0.000 description 12
- 235000013336 milk Nutrition 0.000 description 12
- 239000008267 milk Substances 0.000 description 12
- 210000004080 milk Anatomy 0.000 description 12
- 239000000843 powder Substances 0.000 description 12
- 239000002904 solvent Substances 0.000 description 11
- 238000005452 bending Methods 0.000 description 10
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 9
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 8
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 7
- 239000003999 initiator Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 6
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 239000002954 polymerization reaction product Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 description 5
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 description 4
- 235000019700 dicalcium phosphate Nutrition 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical group ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 150000001408 amides Chemical class 0.000 description 3
- SJJCABYOVIHNPZ-UHFFFAOYSA-N cyclohexyl-dimethoxy-methylsilane Chemical compound CO[Si](C)(OC)C1CCCCC1 SJJCABYOVIHNPZ-UHFFFAOYSA-N 0.000 description 3
- 229940095079 dicalcium phosphate anhydrous Drugs 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 206010057040 Temperature intolerance Diseases 0.000 description 2
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- MKNXBRLZBFVUPV-UHFFFAOYSA-L cyclopenta-1,3-diene;dichlorotitanium Chemical compound Cl[Ti]Cl.C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 MKNXBRLZBFVUPV-UHFFFAOYSA-L 0.000 description 2
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical group [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012456 homogeneous solution Substances 0.000 description 2
- 229960001545 hydrotalcite Drugs 0.000 description 2
- 229910001701 hydrotalcite Inorganic materials 0.000 description 2
- WGOPGODQLGJZGL-UHFFFAOYSA-N lithium;butane Chemical compound [Li+].CC[CH-]C WGOPGODQLGJZGL-UHFFFAOYSA-N 0.000 description 2
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229920005653 propylene-ethylene copolymer Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FMZUHGYZWYNSOA-VVBFYGJXSA-N (1r)-1-[(4r,4ar,8as)-2,6-diphenyl-4,4a,8,8a-tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxin-4-yl]ethane-1,2-diol Chemical compound C([C@@H]1OC(O[C@@H]([C@@H]1O1)[C@H](O)CO)C=2C=CC=CC=2)OC1C1=CC=CC=C1 FMZUHGYZWYNSOA-VVBFYGJXSA-N 0.000 description 1
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- YLZOPXRUQYQQID-UHFFFAOYSA-N 3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]propan-1-one Chemical compound N1N=NC=2CN(CCC=21)CCC(=O)N1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F YLZOPXRUQYQQID-UHFFFAOYSA-N 0.000 description 1
- WPMYUUITDBHVQZ-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoic acid Chemical compound CC(C)(C)C1=CC(CCC(O)=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- NHTMVDHEPJAVLT-UHFFFAOYSA-N Isooctane Chemical compound CC(C)CC(C)(C)C NHTMVDHEPJAVLT-UHFFFAOYSA-N 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical class [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000009924 canning Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 229940087101 dibenzylidene sorbitol Drugs 0.000 description 1
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 1
- CCZVEWRRAVASGL-UHFFFAOYSA-N lithium;2-methanidylpropane Chemical compound [Li+].CC(C)[CH2-] CCZVEWRRAVASGL-UHFFFAOYSA-N 0.000 description 1
- UBJFKNSINUCEAL-UHFFFAOYSA-N lithium;2-methylpropane Chemical compound [Li+].C[C-](C)C UBJFKNSINUCEAL-UHFFFAOYSA-N 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- SNVLJLYUUXKWOJ-UHFFFAOYSA-N methylidenecarbene Chemical compound C=[C] SNVLJLYUUXKWOJ-UHFFFAOYSA-N 0.000 description 1
- UIEKYBOPAVTZKW-UHFFFAOYSA-L naphthalene-2-carboxylate;nickel(2+) Chemical compound [Ni+2].C1=CC=CC2=CC(C(=O)[O-])=CC=C21.C1=CC=CC2=CC(C(=O)[O-])=CC=C21 UIEKYBOPAVTZKW-UHFFFAOYSA-L 0.000 description 1
- 125000001979 organolithium group Chemical group 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
Landscapes
- 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)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention relates to the field of polypropylene materials, and discloses a composition for preparing a polypropylene material, an application thereof, a polypropylene material, a preparation method thereof and an application thereof. The composition provided by the invention can prepare the polypropylene material which is resistant to low temperature and breakage and can overcome stress whitening through the cooperation of specific types and contents of components.
Description
Technical Field
The invention relates to the field of cover materials, in particular to a composition for preparing a polypropylene material, application of the composition in preparing the polypropylene material, a method for preparing the polypropylene material, the polypropylene material prepared by the method and application of the polypropylene material as a cover material.
Background
Polypropylene materials are widely used in the fields of automobile parts, electronic devices, medicines, semiconductor parts, household utensils, textiles and the like, and particularly, the polypropylene materials are increasingly used as sealing covers for outer packages.
For example, at present, two packaging modes of milk powder are generally adopted, one is bagging, and a user needs to reseal a bag opening after using the milk powder, and the mode is low in cost, complex in operation and poor in sealing effect; the other is canning, after the bottle is used up once, the bottle can be sealed only by covering the bottle with a cover, and the bottle is convenient to operate, excellent in sealing effect and most widely applied.
The resin composition for injection molding of the lidstock needs to have good modulus and toughness, low odor and low shrinkage, and low temperature resistance to bending and blushing when packaged for multiple openings. However, in the existing process of preparing the milk powder sealing cover, common polypropylene materials are used for processing and injection molding, so that smell is high, and particularly when a cover for sealing the barreled milk powder is integrally molded by injection molding, comprising a lower cover, an upper cover and a spoon, the lower cover and the upper cover are connected through a soft connecting part, the prepared integral cover is too hard or too soft, and can not be smoothly covered on the milk powder barrel through a mechanical arm; meanwhile, under the conditions of low temperature and normal temperature, the cover is easy to break, turn white and the like after being bent, and the requirements of the product performance cannot be met.
Therefore, it is important to provide a new polypropylene material which has good toughness, is resistant to bending and can overcome stress whitening and is suitable for being used as a cover material.
Disclosure of Invention
The invention aims to overcome the defects of bending intolerance and easy stress whitening in the polypropylene material in the prior art, and provides a novel composition which can be used for preparing the polypropylene material which is bending resistant and stress whitening resistant and is suitable for being used as a cover material, and the polypropylene material prepared from the composition.
In order to achieve the above object, the present invention provides, in a first aspect, a composition for preparing a polypropylene material, the composition comprising a propylene-ethylene random copolymer and a hydrogenated styrene-butadiene-styrene block copolymer;
wherein, in the propylene-ethylene random copolymer, ethylene is provided in an amount of 1 to 10 mol% based on the total molar amount of the propylene-ethylene random copolymer;
in the hydrogenated styrene-butadiene-styrene block copolymer, the hydrogenation degree of unsaturated double bonds in structural units provided by butadiene is more than or equal to 98mol percent, and the hydrogenation degree of aromatic hydrocarbon unsaturated bonds in structural units provided by styrene is less than or equal to 5mol percent; styrene provides a content of structural units of 9 to 40 wt% and butadiene provides a content of 1, 2-structural units of 15 to 85 wt% based on the total weight of the hydrogenated styrene-butadiene-styrene block copolymer;
The propylene-ethylene random copolymer is present in an amount of from 85 to 99.5 weight percent, based on the total weight of the propylene-ethylene random copolymer and the hydrogenated styrene-butadiene-styrene block copolymer; the hydrogenated styrene-butadiene-styrene block copolymer is contained in an amount of 0.5 to 15% by weight.
In a second aspect the invention provides the use of a composition according to the first aspect hereinbefore described for the preparation of a polypropylene material.
In a third aspect the present invention provides a process for preparing a polypropylene material, the process comprising: the components of the composition according to the first aspect are mixed and shaped sequentially.
In a fourth aspect the present invention provides a polypropylene material obtainable by the process according to the third aspect.
A fifth aspect of the present invention provides the use of the polypropylene material according to the fourth aspect as a lidstock.
Compared with the prior art, the invention has at least the following advantages:
according to the composition provided by the invention, through the cooperative matching of specific types and contents of components, the polypropylene material which is resistant to low temperature and breakage and capable of overcoming stress whitening can be prepared, and the obtained polypropylene material is suitable for being used as a cover material, so that the problems of low temperature intolerance, breakage intolerance, easy stress whitening and the like existing in the existing cover material are solved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
The following describes specific embodiments of the present invention in detail. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
As previously described, a first aspect of the present invention provides a composition for preparing a polypropylene material, the composition comprising a propylene-ethylene random copolymer and a hydrogenated styrene-butadiene-styrene block copolymer;
wherein, in the propylene-ethylene random copolymer, ethylene is provided in an amount of 1 to 10 mol% based on the total molar amount of the propylene-ethylene random copolymer;
in the hydrogenated styrene-butadiene-styrene block copolymer, the hydrogenation degree of unsaturated double bonds in structural units provided by butadiene is more than or equal to 98mol percent, and the hydrogenation degree of aromatic hydrocarbon unsaturated bonds in structural units provided by styrene is less than or equal to 5mol percent; styrene provides a content of structural units of 9 to 40 wt% and butadiene provides a content of 1, 2-structural units of 15 to 85 wt% based on the total weight of the hydrogenated styrene-butadiene-styrene block copolymer;
The propylene-ethylene random copolymer is present in an amount of from 85 to 99.5 weight percent, based on the total weight of the propylene-ethylene random copolymer and the hydrogenated styrene-butadiene-styrene block copolymer; the hydrogenated styrene-butadiene-styrene block copolymer is contained in an amount of 0.5 to 15% by weight.
In the present invention, the hydrogenated styrene-butadiene-styrene block copolymer refers to a hydrogenated block copolymer obtained by hydrogenating a styrene-butadiene-styrene block copolymer.
The following description will be made with respect to preferred embodiments of the propylene-ethylene random copolymer.
Preferably, the propylene-ethylene random copolymer has a weight average molecular weight of from 8 to 16 tens of thousands, more preferably from 10 to 14 tens of thousands.
Preferably, ethylene is provided in an amount of 1.2 to 5 mole%, more preferably 1.5 to 5 mole%, based on the total molar amount of the propylene-ethylene random copolymer.
Preferably, the propylene-ethylene random copolymer has a melt flow rate of 15 to 40g/10min, more preferably 25 to 35g/10min, at 230℃under a load of 2.16 kg.
According to the present invention, in order to improve the oxidation resistance of the propylene-ethylene random copolymer, various auxiliaries known in the art, such as an antioxidant 1010, an antioxidant 168, etc., and an acid acceptor such as DHT-4A, etc., may be contained in the propylene-ethylene random copolymer. Preferably, the antioxidant is 0.02 to 0.3g relative to 100g of the propylene-ethylene copolymer; preferably, the acid absorber is 0.01 to 0.1g relative to 100g of the propylene-ethylene copolymer.
The inventors have found that by specifically selecting the propylene-ethylene random copolymer within the above-mentioned preferred range to be blended with other components in the composition of the present invention, a polypropylene material having better properties such as bending resistance can be obtained.
According to the present invention, the propylene-ethylene random copolymer may be prepared using a preparation method existing in the art.
In order to obtain polypropylene materials with better performance, according to a preferred embodiment of the present invention, the propylene-ethylene random copolymer is prepared by the following method:
the propylene monomer and the ethylene monomer are polymerized in the presence of a first catalyst and hydrogen.
Preferably, the polymerization conditions include: the polymerization temperature is 50-80 ℃; the pressure is 1-2MPa.
Preferably, the first catalyst is selected from at least one of Ziegler Natta and metallocene. The dosage of the first catalyst is 0.3-0.9kg/h.
Preferably, the propylene monomer is used in an amount of 90 to 99 mol% and the ethylene monomer is used in an amount of 1 to 10 mol% based on the total molar amount of the propylene monomer and the ethylene monomer; more preferably, the propylene monomer is used in an amount of 95 to 98.8 mol% and the ethylene monomer is used in an amount of 1.2 to 5 mol%.
Preferably, the molar ratio of the hydrogen to the propylene monomer is in the range of 0.025 to 0.045:1.
according to the invention, in order to improve the oxidation resistance of the propylene-ethylene random copolymer, the preparation process of the propylene-ethylene random copolymer further comprises the steps of sequentially mixing a polymerization reaction product, an antioxidant and an acid absorber, extruding and granulating.
Preferably, the antioxidant is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate (antioxidant 1010) and/or tris (2, 4-di-tert-butylphenyl) phosphite (antioxidant 168).
Preferably, the antioxidant is used in an amount of 0.02 to 0.3g relative to 100g of the polymerization reaction product.
Preferably, the acid absorber is used in an amount of 0.01 to 0.1g relative to 100g of the polymerization reaction product.
According to the invention, in the preparation of the propylene-ethylene random copolymer, the monomer is converted almost completely into the corresponding structural unit contained in the polymer, and the amount of the monomer is consistent with the content of the corresponding structural unit contained in the polymer.
The following description is made with respect to preferred embodiments of the hydrogenated styrene-butadiene-styrene block copolymer.
Preferably, styrene provides a content of structural units of 10 to 30 wt% and butadiene provides a content of 1, 2-structural units of 25 to 75 wt% based on the total weight of the hydrogenated styrene-butadiene-styrene block copolymer.
More preferably, styrene provides a content of structural units of 15 to 25% by weight and butadiene provides a content of 1, 2-structural units of 25 to 70% by weight, based on the total weight of the hydrogenated styrene-butadiene-styrene block copolymer.
Preferably, the hydrogenated styrene-butadiene-styrene block copolymer has a number average molecular weight of from 4 to 10, more preferably from 6 to 9.
Preferably, in the hydrogenated styrene-butadiene-styrene block copolymer, the styrene provides a degree of hydrogenation of aromatic hydrocarbon unsaturation in the structural units of 1mol% or less, more preferably less than 0.1mol%; still more preferably, the aromatic unsaturated double bonds in the structural units provided by styrene are not hydrogenated, i.e., the degree of hydrogenation is 0.
Preferably, the hydrogenated styrene-butadiene-styrene block copolymer has a melt flow rate of 1 to 80g/10min, preferably 5 to 51g/10min, more preferably 5 to 45g/10min, at 190℃under a load of 2.16 kg.
The inventors have found that the particular choice of hydrogenated styrene-butadiene-styrene block copolymer within the above preferred ranges in combination with other components of the composition according to the invention gives polypropylene materials with better properties such as resistance to bending and resistance to stress whitening.
According to the present invention, the hydrogenated styrene-butadiene-styrene block copolymer can be prepared using the preparation methods existing in the art.
In order to obtain polypropylene materials with better performance, according to a preferred embodiment of the present invention, the hydrogenated styrene-butadiene-styrene block copolymer is prepared by the following preparation method:
(a) Carrying out a first polymerization reaction on a styrene monomer in the presence of an organic solvent and an initiator;
(b) Carrying out second polymerization reaction on the first polymerization reaction product and butadiene monomer;
(c) Carrying out a third polymerization reaction on the second polymerization reaction product and a styrene monomer to prepare a styrene-butadiene-styrene block copolymer with an SBS structure;
(d) And in the presence of a second catalyst, contacting the styrene-butadiene-styrene block copolymer with hydrogen to carry out hydrogenation reaction, so as to prepare the hydrogenated styrene-butadiene-styrene triblock copolymer with the SEBS structure.
Preferably, in step (a), the organic solvent is selected from at least one of n-pentane, n-hexane, n-heptane, isooctane, cyclopentane, cyclohexane.
Preferably, in step (a), the organic solvent is used in an amount such that the styrene monomer is contained in an amount of 0.5 to 10% by weight based on the total weight of the organic solvent and the styrene monomer.
Preferably, in step (a), the initiator is selected from at least one of n-butyllithium, sec-butyllithium, isobutyl lithium and tert-butyllithium, more preferably n-butyllithium and/or sec-butyllithium.
According to the present invention, in the step (a), the initiator is added to the polymerization system in the form of an initiator solution, a solvent of the initiator is, for example, at least one of n-hexane, cyclohexane, n-heptane and the like, and the concentration of the organolithium initiator solution is preferably 0.1 to 2mol/L.
Preferably, in step (a), the initiator is used in an amount of 0.02 to 0.72mol with respect to 1kg of the styrene monomer.
Preferably, in step (a), the conditions of the first polymerization reaction include: the temperature is 40-80 ℃ and the time is 0.5-3h.
Preferably, in step (b), the conditions of the second polymerization reaction include: the temperature is 40-80 ℃ and the time is 0.5-4h.
Preferably, in step (b), the weight ratio of the amount of the butadiene monomer to the amount of the styrene monomer of the first polymerization reaction is 3 to 18:1, more preferably 3.5-17:1.
preferably, in step (c), the conditions of the third polymerization reaction include: the temperature is 40-80 ℃ and the time is 0.5-3h.
Preferably, in step (c), the weight ratio of the amount of the butadiene monomer used in the second polymerization reaction to the amount of the styrene monomer used in step (c) is 3 to 18:1, more preferably 3.5-17:1.
preferably, in step (d), the hydrogenation conditions include: the temperature is 50-80 ℃, the time is 0.5-3h, and the pressure is 2-6MPa.
Preferably, in step (d), the second catalyst is selected from at least one of titanocene dichloride, nickel naphthenate, and metallic palladium salt. For example, titanocene dichloride (catalyst Ti/Al, ti/Al content molar ratio 1:1-30).
Preferably, the weight ratio of the styrene-butadiene-styrene block copolymer to the second catalyst is 100:0.1-0.5.
According to the present invention, the termination of the polymerization reaction may be further included after the completion of the third polymerization reaction using a terminator including, but not limited to, deionized water, alcohol, acid, etc., preferably at least one of isopropyl alcohol, methanol, water.
Although the composition provided by the invention can obtain the polypropylene material with the required performance in the invention within the content range, in order to obtain the polypropylene material which has better toughness, better bending resistance and better stress whitening resistance and is more suitable for being used as a cover material, the content of the propylene-ethylene random copolymer is 90 to 99 weight percent based on the total weight of the propylene-ethylene random copolymer and the hydrogenated styrene-butadiene-styrene block copolymer contained in the composition; the hydrogenated styrene-butadiene-styrene block copolymer is contained in an amount of 1 to 10% by weight.
More preferably, the propylene-ethylene random copolymer is contained in an amount of 92 to 98% by weight based on the total weight of the propylene-ethylene random copolymer and the hydrogenated styrene-butadiene-styrene block copolymer contained in the composition; the hydrogenated styrene-butadiene-styrene block copolymer is contained in an amount of 2 to 8% by weight.
According to a preferred embodiment of the present invention, the composition comprises a propylene-ethylene random copolymer and a hydrogenated styrene-butadiene-styrene block copolymer, wherein the propylene-ethylene random copolymer has a weight average molecular weight of 8 to 16, preferably 10 to 14, tens of thousands; ethylene provides a content of structural units of 1 to 10 mol%, preferably 1.2 to 5 mol%, based on the total moles of the propylene-ethylene random copolymer; the propylene-ethylene random copolymer has a melt flow rate of 15 to 40g/10min, preferably 25 to 35g/10min, at 230℃under a load of 2.16 kg. The hydrogenated styrene-butadiene-styrene block copolymer has a number average molecular weight of 4 to 10, preferably 6 to 9; in the hydrogenated styrene-butadiene-styrene block copolymer, the degree of hydrogenation of aromatic unsaturated double bonds in the structural units provided by styrene is 1mol% or less, more preferably less than 0.1mol%, and still more preferably the aromatic unsaturated double bonds in the structural units provided by styrene are not hydrogenated; styrene provides a content of structural units of 9 to 40 wt%, preferably 10 to 30 wt%, more preferably 15 to 25 wt%, and butadiene provides a content of 1, 2-structural units of 15 to 85 wt%, preferably 25 to 75 wt%, more preferably 25 to 70 wt%, based on the total weight of the hydrogenated styrene-butadiene-styrene block copolymer; the hydrogenated styrene-butadiene-styrene block copolymer has a melt flow rate of 1 to 80g/10min, preferably 5 to 45g/10min, at 190℃under a load of 2.16 kg. The inventor finds that the polypropylene material prepared by particularly selecting the composition in the preferable range has more excellent low temperature resistance, breakage resistance and stress whitening resistance, and is more suitable for being used as a cover material.
According to another preferred embodiment of the present invention, the composition comprises a propylene-ethylene random copolymer, a hydrogenated styrene-butadiene-styrene block copolymer, and an additive selected from at least one of a nucleating agent, a primary antioxidant, a secondary antioxidant, an acid acceptor, and a slip agent.
Preferably, the total content of the propylene-ethylene random copolymer and the hydrogenated styrene-butadiene-styrene block copolymer is 99 to 99.9 wt% and the content of the additive is 0.1 to 1 wt% based on the total weight of the composition.
Preferably, the nucleating agent is a sorbitol compound and/or an inorganic salt compound.
According to the invention, the sorbitol compound is preferably dibenzylidene sorbitol.
According to the present invention, the inorganic salt compound is preferably at least one selected from the group consisting of talc, silicate, dibasic calcium phosphate and calcium carbonate.
Preferably, the primary antioxidant is selected from at least one of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate (antioxidant 1010), n-stearyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate (antioxidant 1076), and 2,4, 6-tris (3 ',5' -di-tert-butyl-4 ' -hydroxybenzyl) mesitylene (antioxidant 330).
Preferably, the auxiliary antioxidant is selected from at least one of phenyl tri (2, 4-di-tert-butyl) phosphite (antioxidant 168) and bis (2, 4-di-tert-butylphenol) pentaerythritol diphosphite (antioxidant 626).
Preferably, the acid absorber is hydrotalcite and/or stearic acid.
Preferably, the slip agent is erucamide and/or oleamide.
According to a preferred embodiment of the invention, the nucleating agent is present in an amount of 0.05 to 0.3% by weight, based on the total weight of the composition; the content of the main antioxidant is 0.02-0.2 wt%; the content of the auxiliary antioxidant is 0.02-0.2 wt%; the content of the acid absorbing agent is 0-0.1 wt%; the content of the slipping agent is 0.01-0.2 wt%.
The inventors have found that by specifically selecting the above preferred types and amounts of additives to be combined with the other components of the composition, a polypropylene material having better properties can be obtained.
The present invention is not particularly limited in the preparation method of the composition, and may be prepared by methods conventional in the art, for example, the components in the composition may be mixed to prepare the composition; the components forming the composition may also be stored separately, mixed for application or otherwise treated accordingly.
The composition provided by the invention can be prepared into a polypropylene material which has the comprehensive excellent characteristics of good toughness, good bending resistance, capability of overcoming stress whitening and the like through the cooperation of specific types and contents of components, is particularly suitable for being used as a cover material, and solves the problems of the existing cover material in multiple aspects such as low temperature intolerance, fracture intolerance, easy stress whitening, difficult buckling and the like.
In addition, the polypropylene material prepared from the composition provided by the invention also has the advantages of proper modulus, lower odor and excellent shrinkage performance.
As previously mentioned, a second aspect of the present invention provides the use of a composition as described in the first aspect above for the preparation of a polypropylene material.
The specific operation of the application is not particularly limited in the present invention, and may be carried out using a method for preparing a polypropylene material using a polypropylene composition as known in the art.
In order to obtain a polypropylene material which has better toughness, better bending resistance and better stress whitening resistance and is suitable for being used as a cover material, the invention provides a preparation method in a third aspect, which comprises the following steps:
the method comprises the following steps: the components of the composition according to the first aspect are mixed and shaped sequentially.
Preferably, the mixing conditions include: the temperature is 160-240 ℃ and the time is 30-240s.
Preferably, the molding conditions at least satisfy: the temperature is 190-230 ℃ and the time is 60-180s.
According to a preferred embodiment of the invention, said mixing and said shaping steps are carried out in a twin-screw extruder.
According to a preferred embodiment of the invention, the shaping is extrusion, for example extrusion granulation.
In the method according to the third aspect of the present invention, the properties of each component in the composition, such as optional species, etc., are correspondingly the same as those of each component in the composition according to the first aspect, and for avoiding redundancy, the present invention is not described in detail herein, and those skilled in the art should not understand the limitation of the present invention.
As previously mentioned, a fourth aspect of the present invention provides a polypropylene material prepared by the method of the third aspect.
The polypropylene material obtained by the invention has the comprehensive excellent characteristics of good toughness, good bending resistance, capability of overcoming stress whitening and the like. In addition, the polypropylene material obtained by the invention also has proper modulus, lower odor and excellent shrinkage performance.
As described above, the fifth aspect of the present invention provides the use of the polypropylene material according to the fourth aspect as a lidstock.
The specific operation of the application is not particularly limited, and may be performed using an operation of preparing a sheathing cap material such as a milk powder cap using a polypropylene material, which is known in the art, for example, by injection molding, which is not described in detail herein, and a specific operation process is hereinafter enumerated, and the person skilled in the art should not understand the limitation of the present invention.
In the present invention, unless otherwise specified, the pressures refer to gauge pressures.
The invention will be described in detail below by way of examples.
In the examples below, all the raw materials used are commercially available, unless otherwise specified.
Triethylaluminum: purchased from beijing dilong chemical company;
cyclohexylmethyldimethoxysilane: purchased from Shandong Lu Jing Co;
n-butyllithium: supplied by the reagent Co., ltd., the solvent is cyclohexane, the concentration is 1.3mol.L -1 ；
Nucleating agent: calcium hydrogen phosphate, silica was purchased from Guangdong Su and Corp;
and (3) a main antioxidant: pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate (antioxidant 1010); beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propanoic acid n-stearyl alcohol ester (antioxidant 1076) was purchased from Tianjin An Long company;
Auxiliary antioxidant: tris (2, 4-di-t-butylphenyl) phosphite (antioxidant 168), bis (2, 4-di-t-butylphenol) pentaerythritol diphosphite (antioxidant 626) were purchased from Tianjin An Long company;
slip agent: the medium acid amide is purchased from Heda, england;
acid absorber: hydrotalcite DHT-4A, zinc stearate was purchased from guangdong.
In the following examples, the properties referred to were prepared by the following preparation methods:
(1) The molecular weight of the propylene-ethylene random copolymer and the hydrogenated styrene-butadiene-styrene block copolymer are obtained by gel chromatography test, the solvent is o-dichlorobenzene, and the sample dissolution and filtration temperature is 150 ℃;
(2) Structural unit content: the method is obtained through a nuclear magnetic method test, specifically, a sample is dissolved by deuterated o-dichlorobenzene at the temperature of 120 ℃ to prepare a homogeneous solution with the mass concentration of 15% (V), and the homogeneous solution is dissolved in an oil bath at the temperature of 120 ℃ for 4-5 hours. Carbon spectra were measured using a BRUKER400 nuclear magnetic resonance spectrometer,the sample tube, working frequency 100.62MHz,30 DEG pulse, pulse time 3s, proton noise total decoupling, spectrum width 15000HZ, accumulated times 4000 times, calibrating with 30.0ppm isolated methylene carbon;
(3) Melt flow rate: the test according to GB/T3682-2000 shows a temperature of 230℃and a load of 2.16kg.
(4) Rockwell hardness: is tested by an ASTMD1415 method;
(5) Flexural modulus: is obtained by testing the GB/T9341-2000 method;
(6) TVO concentration: the concentration of the total volatile is shown and is obtained by testing a gas chromatography method;
(7) Shrinkage ratio: is obtained by testing by GBT15585 method;
(8) Impact strength of simple beam: is tested by a GB/T1043-2008 method;
(9) Number of fold resistance: manufacturing a sheet with the thickness of 0.5mm, the length of 10cm and the width of 1cm at 23 ℃, and carrying out reciprocating folding on the sheet on a folding endurance meter at an angle of 135 degrees until the sheet is folded to the logarithm of the double folding times required by fracture;
(10) Hydrogenation degree: sample hydrogenation rate as determined by 1H-NMR; solvent: deuterated chloroform, the polymer was formulated to a concentration of: 50mg/mL, observed frequency: 400MHz, chemical shift reference: TMS (tetramethylsilane), pulse delay: 2.904 seconds, number of scans: 64 times, pulse width: 45 deg..
The following preparation examples are presented to illustrate the preparation of the propylene-ethylene random copolymer component.
PREPARATION EXAMPLE 1-1
(1) The catalyst solid (titanium tetrachloride supported on magnesium chloride (SAL), available from Beijing Orda petrochemical Co., ltd.) was continuously added at 0.63kg/h for 50m 3 Continuously adding triethylaluminum by a pump (the addition amount of the triethylaluminum is such that the molar ratio of aluminum in the triethylaluminum chloride to titanium in the solid component of the catalyst Al/Ti=20), and continuously adding cyclohexylmethyldimethoxy silane (wherein the molar ratio of the triethylaluminum to the cyclohexylmethyldimethoxy silane is 5:1);
(2) Introducing propylene monomer, ethylene monomer and hydrogen into the reactor for polymerization reaction, wherein the polymerization reaction conditions comprise: the pressure of the reactor is 1.4MPa, the temperature of the reactor is 70 ℃, the dosage mole ratio of hydrogen to propylene monomer in the reactor is 0.032, based on the total mole dosage of propylene monomer and ethylene monomer, the dosage of propylene is 96.8 mole percent, and the dosage of ethylene is 3.2 mole percent; the average residence time of propylene, ethylene and hydrogen in the reactor was 60min, the reactor level was 65%;
(3) 1000ppm of antioxidant 1010, 1000ppm of antioxidant 168 and 400ppm of DHT-4A are added to the product after the polymerization reaction is completed, and the propylene-ethylene random copolymer A1 is obtained through pelletization by an extruder.
The reaction gave a propylene-ethylene random copolymer, the specific properties of which are shown in Table 1.
PREPARATION EXAMPLES 1-2
In a similar manner to preparation example 1-1, except that: in the step (2), the amount of propylene is 98.8 mol% and the amount of ethylene is 1.2 mol% based on the total molar amount of propylene and ethylene;
the remainder was the same as in preparation example 1-1 to obtain propylene-ethylene random copolymer A2.
The reaction gave a propylene-ethylene random copolymer, the specific properties of which are shown in Table 1.
Preparation examples 1 to 3
In a similar manner to preparation example 1-1, except that: in step (2), the molar ratio of hydrogen to propylene monomer is 0.041; the amount of propylene was 95.9 mol% and the amount of ethylene was 4.1 mol% based on the total molar amount of propylene and ethylene;
the remainder was the same as in preparation example 1-1 to obtain propylene-ethylene random copolymer A3.
The reaction gave a propylene-ethylene random copolymer, the specific properties of which are shown in Table 1.
Preparation examples 1 to 4
In a similar manner to preparation example 1-1, except that: in step (2), the molar ratio of hydrogen to propylene monomer is 0.028; the amount of propylene was 97.5 mol% and the amount of ethylene was 2.5 mol% based on the total molar amount of propylene and ethylene;
the remainder was the same as in preparation example 1-1 to obtain propylene-ethylene random copolymer A4.
The reaction gave a propylene-ethylene random copolymer, the specific properties of which are shown in Table 1.
Preparation examples 1 to 5
In a similar manner to preparation example 1-1, except that: in step (2), the molar ratio of hydrogen to propylene monomer is 0.041; the amount of propylene is 90 mol% and the amount of ethylene is 10 mol% based on the total mol of propylene and ethylene;
The remainder was the same as in preparation example 1-1 to obtain propylene-ethylene random copolymer A5.
The reaction gave a propylene-ethylene random copolymer, the specific properties of which are shown in Table 1.
Preparation examples 1 to 6
In a similar manner to preparation example 1-1, except that: in step (2), the molar ratio of hydrogen to propylene monomer is 0.049; the amount of propylene is 90 mol% and the amount of ethylene is 10 mol% based on the total mol of propylene and ethylene;
the remainder was the same as in preparation example 1-1 to obtain propylene-ethylene random copolymer A6.
The reaction gave a propylene-ethylene random copolymer, the specific properties of which are shown in Table 1.
Comparative preparation example 1-1
In a similar manner to preparation example 1-1, except that: in step (2), the molar ratio of hydrogen to propylene monomer is 0.028; the amount of propylene was 99.6 mol% and the amount of ethylene was 0.4 mol% based on the total molar amount of propylene and ethylene;
the remainder was the same as in preparation example 1-1 to obtain propylene-ethylene random copolymer DA1.
The reaction gave a propylene-ethylene random copolymer, the specific properties of which are shown in Table 1.
Comparative preparation examples 1-2
In a similar manner to preparation example 1-1, except that: in step (2), the molar ratio of hydrogen to propylene monomer is 0.041; the amount of propylene is 85 mol% and the amount of ethylene is 15 mol% based on the total molar amount of propylene and ethylene;
The remainder was the same as in preparation example 1-1 to obtain propylene-ethylene random copolymer DA2.
The reaction gave a propylene-ethylene random copolymer, the specific properties of which are shown in Table 1.
Comparative preparation examples 1 to 3
A polypropylene polymer was produced in a similar manner to production example 1-1 except that in step (2), the hydrogen/propylene monomer molar ratio was 0.028; the polymerization was carried out using only propylene monomer without using ethylene monomer, and the rest was the same as in preparation example 1-1, to obtain a polypropylene polymer DA3.
TABLE 1
The following preparation examples are presented to illustrate the preparation of hydrogenated styrene-butadiene-styrene block copolymers.
PREPARATION EXAMPLE 2-1
(a) Dissolving 4kg of styrene monomer in 160kg of cyclohexane solvent, adding 242.8ml of n-butyllithium, and reacting for 3 hours at 50 ℃ to perform a first polymerization reaction;
(b) After the first polymerization reaction, adding 30.04kg total butadiene monomer at a rate of 2kg/min, and keeping the temperature at 55 ℃ for 4 hours to perform a second polymerization reaction;
(c) Adding 4kg of styrene into the second polymerization reaction system, and reacting for 3 hours at 50 ℃ to perform a third polymerization reaction to prepare a styrene-butadiene-styrene triblock copolymer with an SBS structure;
(d) The triblock copolymer and a catalyst Ti/Al (the molar ratio of Ti/Al is 1:1.7) are mixed according to the mass ratio of 100:0.2, and carrying out hydrogenation reaction under the conditions of hydrogen pressure of 4.5MPa and temperature of 55 ℃ for 3 hours to prepare the hydrogenated styrene-butadiene-styrene block copolymer B1 with the SEBS structure.
The properties of the hydrogenated styrene-butadiene-styrene block copolymer B1 obtained are shown in Table 2.
PREPARATION EXAMPLE 2-2
(a) 7kg of styrene monomer is dissolved in 200kg of cyclohexane solvent, 301.2ml of n-butyllithium is added, and the reaction is carried out for 3 hours at 50 ℃ to carry out a first polymerization reaction;
(b) After the completion of the first polymerization, 37.3kg of total butadiene monomer was added at a rate of 1.7kg/min, and the reaction was carried out at 52℃for 4 hours to carry out the second polymerization
(c) Adding 7kg of styrene into the second polymerization reaction system, reacting for 3 hours at 50 ℃ to perform a third polymerization reaction, and then preparing a styrene-butadiene-styrene triblock copolymer with an SBS structure;
(d) The triblock copolymer and a catalyst Ti/Al (the molar ratio of Ti/Al is 1:1.7) are mixed according to the mass ratio of 100:0.15, and carrying out hydrogenation reaction under the conditions of hydrogen pressure of 4.7MPa and temperature of 55 ℃ for 3 hours to prepare the triblock copolymer B2 with the SEBS structure.
The resulting hydrogenated styrene-butadiene-styrene block copolymer was tested and its specific properties are shown in Table 2.
PREPARATION EXAMPLES 2-3
(a) Dissolving 12kg of styrene monomer in 250kg of cyclohexane solvent, adding 369ml of n-butyllithium, and reacting for 3 hours at 50 ℃ to perform a first polymerization reaction;
(b) After the first polymerization, 45.1kg of total butadiene monomer was added at a rate of 2.8kg/min, and the reaction was carried out at 55℃for 4 hours;
(c) Adding 12kg of styrene into the second polymerization reaction system, and reacting for 3h at 55 ℃ to perform a third polymerization reaction to prepare a styrene-butadiene-styrene triblock copolymer with an SBS structure;
(d) The triblock copolymer and a catalyst Ti/Al (the molar ratio of Ti/Al is 1:1.7) are mixed according to the mass ratio of 100:0.25, and carrying out hydrogenation reaction under the conditions of hydrogen pressure of 4.7MPa and temperature of 55 ℃ for 3 hours to prepare the styrene-ethylene-butylene-styrene triblock copolymer B3 with the SEBS structure.
The hydrogenated styrene-butadiene-styrene block copolymer was tested and its specific properties are shown in Table 2.
PREPARATION EXAMPLES 2 to 4
(a) 1kg of styrene monomer is dissolved in 100kg of cyclohexane solvent, 135.6ml of n-butyllithium is added, and the reaction is carried out for 3 hours at 50 ℃ to carry out a first polymerization reaction;
(b) After the first polymerization reaction is finished, adding 16.2kg of total butadiene monomer at a rate of 2.5kg/min, maintaining the temperature at 55 ℃ for 4 hours, and then preparing a styrene-butadiene-styrene triblock copolymer with an SBS structure;
(c) Adding 1kg of styrene into the second polymerization reaction system, and reacting for 2 hours at the temperature of 60 ℃ to perform a third polymerization reaction to prepare a styrene-butadiene-styrene triblock copolymer with an SBS structure;
(d) The triblock copolymer and a catalyst Ti/Al (the molar ratio of Ti/Al is 1:1.7) are mixed according to the mass ratio of 100:0.3, and carrying out hydrogenation reaction under the condition of hydrogen pressure of 4.8Mpa and temperature of 55 ℃ for 3 hours to prepare the triblock copolymer B4 with the SEBS structure.
The hydrogenated styrene-butadiene-styrene block copolymer was tested and its specific properties are shown in Table 2.
PREPARATION EXAMPLES 2 to 5
(a) 5kg of styrene monomer is dissolved in 100kg of cyclohexane solvent, 135.6ml of n-butyllithium is added, and the reaction is carried out for 3 hours at 50 ℃ to carry out a first polymerization reaction;
(b) After the first polymerization reaction is finished, adding 16.2kg of total butadiene monomer at a rate of 2.5kg/min, maintaining the temperature at 55 ℃ for 4 hours, and then preparing a styrene-butadiene-styrene triblock copolymer with an SBS structure;
(c) Adding 5kg of styrene into the second polymerization reaction system, and reacting for 2 hours at the temperature of 60 ℃ to perform a third polymerization reaction to prepare a styrene-butadiene-styrene triblock copolymer with an SBS structure;
(d) The triblock copolymer and a catalyst Ti/Al (the molar ratio of Ti/Al is 1:1.7) are mixed according to the mass ratio of 100:0.3, and carrying out hydrogenation reaction under the conditions of hydrogen pressure of 4.8MPa and temperature of 55 ℃ for 3 hours to prepare the triblock copolymer B5 with the SEBS structure.
The hydrogenated styrene-butadiene-styrene block copolymer was obtained by the test, and its specific properties are shown in Table 2.
Preparation examples 2 to 6
(a) 0.9kg of styrene monomer is dissolved in 100kg of cyclohexane solvent, 135.6ml of n-butyllithium is added, and the reaction is carried out for 3 hours at 50 ℃ to carry out a first polymerization reaction;
(b) After the first polymerization reaction is finished, adding 16.2kg of total butadiene monomer at a rate of 2.5kg/min, maintaining the temperature at 55 ℃ for 4 hours, and then preparing a styrene-butadiene-styrene triblock copolymer with an SBS structure;
(c) Adding 0.9kg of styrene into the second polymerization reaction system, and reacting for 2 hours at the temperature of 60 ℃ to perform a third polymerization reaction to prepare a styrene-butadiene-styrene triblock copolymer with an SBS structure;
(d) The triblock copolymer and a catalyst Ti/Al (the molar ratio of Ti/Al is 1:1.7) are mixed according to the mass ratio of 100:0.3, and carrying out hydrogenation reaction under the condition of hydrogen pressure of 4.8Mpa and temperature of 55 ℃ for 3 hours to prepare the triblock copolymer B6 with the SEBS structure.
The hydrogenated styrene-butadiene-styrene block copolymer was tested and its specific properties are shown in Table 2.
Comparative preparation example 2-1
This preparation example is used to illustrate the preparation of hydrogenated styrene-butadiene-styrene block copolymers.
(a) 0.5kg of styrene monomer is dissolved in 100kg of cyclohexane solvent, 135.6ml of n-butyllithium is added, and the reaction is carried out for 3 hours at 50 ℃ to carry out a first polymerization reaction;
(b) After the first polymerization reaction is finished, adding 16.2kg of total butadiene monomer at a rate of 2.5kg/min, maintaining the temperature at 55 ℃ for 4 hours, and then preparing a styrene-butadiene-styrene triblock copolymer with an SBS structure;
(c) Adding 0.5kg of styrene into the second polymerization reaction system, and reacting for 2 hours at the temperature of 60 ℃ to perform a third polymerization reaction to prepare a styrene-butadiene-styrene triblock copolymer with an SBS structure;
(d) The triblock copolymer and a catalyst Ti/Al (the molar ratio of Ti/Al is 1:1.7) are mixed according to the mass ratio of 100:0.3, and carrying out hydrogenation reaction under the condition of hydrogen pressure of 4.8Mpa and temperature of 55 ℃ for 3 hours to prepare the triblock copolymer DB1 with the SEBS structure.
The hydrogenated styrene-butadiene-styrene block copolymer was tested and its specific properties are shown in Table 2.
TABLE 2
Example 1
This example illustrates the preparation of polypropylene materials and milk powder caps using the compositions of the present invention.
The specific formulations of the compositions used in this example are shown in Table 3.
The preparation process comprises the following steps:
in a double-screw extruder, the components in the composition for preparing the polypropylene material are subjected to screw melt mixing and extrusion molding to obtain the polypropylene material, wherein the mixing conditions comprise: the temperature of the melt is 220 ℃ and the time is 2min; the extrusion molding conditions include: the temperature is 200 ℃ and the time is 120s;
and (3) carrying out injection molding on the polypropylene material to obtain the milk powder cover, wherein the injection molding conditions comprise: the temperature was 220℃for 20s.
Other embodiments
In a similar manner to example 1, a polypropylene material and a milk powder cap were prepared using an equal weight of the composition, except that the formulation of the composition was different from example 1, and the remainder was the same as example 1, and the specific formulation of the composition used in each example was as shown in Table 3.
TABLE 3 Table 3
Note that: in Table 3, the weight ratio (A: B) of the amount of the propylene-ethylene random copolymer to the hydrogenated styrene-butadiene-styrene block copolymer based on the total amount of the propylene-ethylene random copolymer and the hydrogenated styrene-butadiene-styrene block copolymer contained in the composition formulation is as follows.
Table 3 (Xue 1)
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Note that: the amounts of each additive in Table 3 (section 1) represent the amounts added to the twin screw extruder, based on the total weight of the composition formulation.
Comparative example
In a similar manner to example 1, except that: the formulation of the composition used was different from that of example 1, and the rest was the same as in example 1, and a polypropylene material and a milk powder cap were prepared, and the specific formulation is shown in Table 4.
TABLE 4 Table 4
In table 4: the weight ratio of the amount (A: B) represents the weight ratio of the amount of the propylene-ethylene random copolymer to the hydrogenated styrene-butadiene-styrene block copolymer based on the total amount of the propylene-ethylene random copolymer and the hydrogenated styrene-butadiene-styrene block copolymer contained in the composition formulation; the amount of each additive was 1000ppm, the amount of 168 was 1000ppm, the amount of dibasic calcium phosphate was 1500ppm, and the amount of the mesogenic amide was 1000ppm, based on the total weight of the composition formulation.
Comparative example 6
In a similar manner to example 1, except that:
the formulation of the composition used was different from that of example 1, and the rest was the same as in example 1, to prepare a polypropylene material and a milk powder cap.
Specifically: the composition formulation used was commercial atactic polypropylene (available from Yanshan petrochemical Co., ltd., trade mark C4608) and additives (1010 in 1000ppm,168 in 1000ppm, dibasic calcium phosphate in 1500ppm, and the amount of the mediating amide in 1000ppm, based on the total weight of the composition formulation).
The performance of the milk powder cap obtained in the above example was tested and the specific results are shown in table 5.
TABLE 5
Note that: in table 5, the parallel shrinkage means shrinkage in the direction parallel to the cylinder, and the vertical shrinkage means shrinkage in the direction perpendicular to the cylinder; NP indicates that the cover is too soft and cannot be broken in the impact process of the simply supported beam;
number of fold resistance: "yes" means 230 times without breaking; "No" means 230 post-breaks; "-" indicates that the lid is too soft or too hard to be tested.
According to the results, the polypropylene material which is resistant to low temperature and breakage and capable of overcoming stress whitening can be prepared by matching specific types and contents of components, the phenomenon of whitening can not occur after 230 times of breakage, and the problems of the existing cover material, such as intolerance to low temperature, intolerance to breakage, easiness in stress whitening, difficulty in buckling and the like, are solved.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a plurality of simple variants of the technical proposal of the invention can be carried out, comprising that each specific technical feature is combined in any suitable way, and in order to avoid unnecessary repetition, the invention does not need to be additionally described for various possible combinations. Such simple variations and combinations are likewise to be regarded as being within the scope of the present disclosure.
Claims (24)
1. A composition for preparing polypropylene material as a cap material, characterized in that the composition comprises a propylene-ethylene random copolymer and a hydrogenated styrene-butadiene-styrene block copolymer;
wherein, in the propylene-ethylene random copolymer, ethylene is provided in an amount of 1 to 10 mol% based on the total molar amount of the propylene-ethylene random copolymer; the weight average molecular weight of the propylene-ethylene random copolymer is 8 ten thousand to 16 ten thousand; the melt flow rate of the propylene-ethylene random copolymer under the action of 2.16kg load at 230 ℃ is 15-40g/10min;
in the hydrogenated styrene-butadiene-styrene block copolymer, the hydrogenation degree of unsaturated double bonds in structural units provided by butadiene is more than or equal to 98mol percent, and the hydrogenation degree of aromatic hydrocarbon unsaturated bonds in structural units provided by styrene is less than or equal to 5mol percent; styrene provides a content of structural units of 9 to 40 wt% and butadiene provides a content of 1, 2-structural units of 15 to 85 wt% based on the total weight of the hydrogenated styrene-butadiene-styrene block copolymer; the hydrogenated styrene-butadiene-styrene block copolymer has a number average molecular weight of 4 to 10 tens of thousands; the melt flow rate of the hydrogenated styrene-butadiene-styrene block copolymer under the action of 2.16kg load at 190 ℃ is 1-80g/10min;
The propylene-ethylene random copolymer is present in an amount of from 85 to 99.5 weight percent, based on the total weight of the propylene-ethylene random copolymer and the hydrogenated styrene-butadiene-styrene block copolymer; the hydrogenated styrene-butadiene-styrene block copolymer is contained in an amount of 0.5 to 15% by weight.
2. The composition of claim 1, wherein the propylene-ethylene random copolymer has a weight average molecular weight of from 10 to 14 tens of thousands.
3. The composition of claim 2, wherein ethylene provides a content of structural units of 1.2 to 5 mole percent, based on the total molar amount of the propylene-ethylene random copolymer.
4. The composition of claim 2, wherein the propylene-ethylene random copolymer has a melt flow rate of 25-35g/10min at 230 ℃ under a 2.16kg load.
5. The composition of any of claims 1-4, wherein styrene provides a content of structural units of 10-30 wt% and butadiene provides a content of 1, 2-structural units of 25-75 wt%, based on the total weight of the hydrogenated styrene-butadiene-styrene block copolymer.
6. The composition of any of claims 1-4, wherein the hydrogenated styrene-butadiene-styrene block copolymer has a number average molecular weight of 6-9 ten thousand.
7. The composition according to any one of claims 1 to 4, wherein in the hydrogenated styrene-butadiene-styrene block copolymer, styrene provides a degree of hydrogenation of aromatic hydrocarbon unsaturation in the structural units of 1mol% or less.
8. The composition of any of claims 1-4, wherein in the hydrogenated styrene-butadiene-styrene block copolymer, styrene provides a degree of hydrogenation of aromatic unsaturation in the structural units of less than 0.1mol%.
9. The composition of any of claims 1-4, wherein the hydrogenated styrene-butadiene-styrene block copolymer has a melt flow rate of 5-45g/10min at 190 ℃ under a 2.16kg load.
10. The composition of any of claims 1-4, wherein the propylene-ethylene random copolymer is present in an amount of 90-99 wt% based on the total weight of the propylene-ethylene random copolymer and the hydrogenated styrene-butadiene-styrene block copolymer; the hydrogenated styrene-butadiene-styrene block copolymer is contained in an amount of 1 to 10% by weight.
11. The composition of any of claims 1-4, wherein the composition further comprises an additive selected from at least one of a nucleating agent, a primary antioxidant, a secondary antioxidant, an acid absorber, and a slip agent.
12. The composition of claim 11, wherein the total content of the propylene-ethylene random copolymer and the hydrogenated styrene-butadiene-styrene block copolymer is 99 to 99.9 wt% and the additive is 0.1 to 1 wt%, based on the total weight of the composition.
13. The composition of claim 11, wherein the nucleating agent is a sorbitol compound and/or an inorganic salt compound.
14. The composition of claim 11, wherein the primary antioxidant is selected from at least one of pentaerythritol tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], n-stearyl β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, 2,4, 6-tris (3 ',5' -di-tert-butyl-4 ' -hydroxybenzyl) mesitylene.
15. The composition of claim 11, wherein the secondary antioxidant is selected from at least one of phenyl tris (2, 4-di-t-butyl) phosphite, bis (2, 4-di-t-butylphenol) pentaerythritol diphosphite.
16. The composition of claim 11, wherein the acid absorber is hydrotalcite-like and/or stearic acid.
17. The composition of claim 11, wherein the slip agent is erucamide and/or oleamide.
18. The composition of claim 11, wherein the nucleating agent is present in an amount of 0.05 to 0.3 weight percent based on the total weight of the composition; the content of the main antioxidant is 0.02-0.2 wt%; the content of the auxiliary antioxidant is 0.02-0.2 wt%; the content of the acid absorbing agent is 0-0.1 wt%; the content of the slipping agent is 0.01-0.2 wt%.
19. Use of a composition according to any one of claims 1 to 18 for the preparation of polypropylene material as lidstock.
20. A method of preparing a polypropylene material as a lidstock, the method comprising: mixing and shaping the components of the composition according to any of claims 1 to 18 in sequence.
21. The method of claim 20, wherein the mixing conditions comprise: the temperature is 160-240 ℃ and the time is 30-240s.
22. The method of claim 20, wherein the molding conditions comprise: the temperature is 190-230 ℃ and the time is 60-180s.
23. The method of claim 20, wherein the steps of mixing and shaping are performed in a twin screw extruder.
24. A polypropylene material prepared by the method of any one of claims 20-23.
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