CN107406612B - 交联聚烯烃系树脂发泡体 - Google Patents
交联聚烯烃系树脂发泡体 Download PDFInfo
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- CN107406612B CN107406612B CN201680018953.8A CN201680018953A CN107406612B CN 107406612 B CN107406612 B CN 107406612B CN 201680018953 A CN201680018953 A CN 201680018953A CN 107406612 B CN107406612 B CN 107406612B
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- resin
- polyolefin resin
- mass
- foam
- resin composition
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- 239000006260 foam Substances 0.000 title claims abstract description 77
- 229920005672 polyolefin resin Polymers 0.000 title claims abstract description 62
- 229920005989 resin Polymers 0.000 claims abstract description 70
- 239000011347 resin Substances 0.000 claims abstract description 70
- 239000011342 resin composition Substances 0.000 claims abstract description 53
- 150000002681 magnesium compounds Chemical class 0.000 claims abstract description 33
- 238000004132 cross linking Methods 0.000 claims abstract description 26
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims abstract description 21
- 235000019399 azodicarbonamide Nutrition 0.000 claims abstract description 21
- 239000004156 Azodicarbonamide Substances 0.000 claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 19
- 238000005187 foaming Methods 0.000 claims abstract description 16
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims abstract description 8
- 239000000347 magnesium hydroxide Substances 0.000 claims abstract description 8
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims abstract description 8
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 8
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 8
- -1 polypropylene Polymers 0.000 claims description 19
- 239000004743 Polypropylene Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 16
- 229920001155 polypropylene Polymers 0.000 claims description 16
- 229920013716 polyethylene resin Polymers 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 description 15
- 230000003078 antioxidant effect Effects 0.000 description 14
- 239000004711 α-olefin Substances 0.000 description 13
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 10
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 5
- 239000005977 Ethylene Substances 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000012465 retentate Substances 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 4
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N 1-Heptene Chemical compound CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 description 4
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 4
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- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 4
- 238000007666 vacuum forming Methods 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
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- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 2
- GHKOFFNLGXMVNJ-UHFFFAOYSA-N Didodecyl thiobispropanoate Chemical compound CCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCC GHKOFFNLGXMVNJ-UHFFFAOYSA-N 0.000 description 2
- 239000003508 Dilauryl thiodipropionate Substances 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- 229940043430 calcium compound Drugs 0.000 description 2
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- 235000019304 dilauryl thiodipropionate Nutrition 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
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- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- 239000002530 phenolic antioxidant Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
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- 239000000126 substance Substances 0.000 description 2
- ROLAGNYPWIVYTG-UHFFFAOYSA-N 1,2-bis(4-methoxyphenyl)ethanamine;hydrochloride Chemical compound Cl.C1=CC(OC)=CC=C1CC(N)C1=CC=C(OC)C=C1 ROLAGNYPWIVYTG-UHFFFAOYSA-N 0.000 description 1
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 description 1
- LRZPQLZONWIQOJ-UHFFFAOYSA-N 10-(2-methylprop-2-enoyloxy)decyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCCCCCCCCOC(=O)C(C)=C LRZPQLZONWIQOJ-UHFFFAOYSA-N 0.000 description 1
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- ROHFBIREHKPELA-UHFFFAOYSA-N 2-[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]prop-2-enoic acid;methane Chemical compound C.CC(C)(C)C1=CC(CC(=C)C(O)=O)=CC(C(C)(C)C)=C1O.CC(C)(C)C1=CC(CC(=C)C(O)=O)=CC(C(C)(C)C)=C1O.CC(C)(C)C1=CC(CC(=C)C(O)=O)=CC(C(C)(C)C)=C1O.CC(C)(C)C1=CC(CC(=C)C(O)=O)=CC(C(C)(C)C)=C1O ROHFBIREHKPELA-UHFFFAOYSA-N 0.000 description 1
- LQILVUYCDHSGEU-UHFFFAOYSA-N 4-[(2,5-dioxopyrrol-1-yl)methyl]cyclohexane-1-carboxylic acid Chemical compound C1CC(C(=O)O)CCC1CN1C(=O)C=CC1=O LQILVUYCDHSGEU-UHFFFAOYSA-N 0.000 description 1
- SAPGBCWOQLHKKZ-UHFFFAOYSA-N 6-(2-methylprop-2-enoyloxy)hexyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCCCCOC(=O)C(C)=C SAPGBCWOQLHKKZ-UHFFFAOYSA-N 0.000 description 1
- YJVIKVWFGPLAFS-UHFFFAOYSA-N 9-(2-methylprop-2-enoyloxy)nonyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCCCCCCCOC(=O)C(C)=C YJVIKVWFGPLAFS-UHFFFAOYSA-N 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 208000000474 Poliomyelitis Diseases 0.000 description 1
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- ULQMPOIOSDXIGC-UHFFFAOYSA-N [2,2-dimethyl-3-(2-methylprop-2-enoyloxy)propyl] 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC(C)(C)COC(=O)C(C)=C ULQMPOIOSDXIGC-UHFFFAOYSA-N 0.000 description 1
- IORUEKDKNHHQAL-UHFFFAOYSA-N [2-tert-butyl-6-[(3-tert-butyl-2-hydroxy-5-methylphenyl)methyl]-4-methylphenyl] prop-2-enoate Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)OC(=O)C=C)=C1O IORUEKDKNHHQAL-UHFFFAOYSA-N 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
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- 239000003513 alkali Substances 0.000 description 1
- 230000005260 alpha ray Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000005250 beta ray Effects 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- ZDNFTNPFYCKVTB-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,4-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=C(C(=O)OCC=C)C=C1 ZDNFTNPFYCKVTB-UHFFFAOYSA-N 0.000 description 1
- MPMBRWOOISTHJV-UHFFFAOYSA-N but-1-enylbenzene Chemical compound CCC=CC1=CC=CC=C1 MPMBRWOOISTHJV-UHFFFAOYSA-N 0.000 description 1
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229920005674 ethylene-propylene random copolymer Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- JKBYAWVSVVSRIX-UHFFFAOYSA-N octadecyl 2-(1-octadecoxy-1-oxopropan-2-yl)sulfanylpropanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)SC(C)C(=O)OCCCCCCCCCCCCCCCCCC JKBYAWVSVVSRIX-UHFFFAOYSA-N 0.000 description 1
- HMZGPNHSPWNGEP-UHFFFAOYSA-N octadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)=C HMZGPNHSPWNGEP-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- LGOPTUPXVVNJFH-UHFFFAOYSA-N pentadecanethioic s-acid Chemical compound CCCCCCCCCCCCCCC(O)=S LGOPTUPXVVNJFH-UHFFFAOYSA-N 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920005678 polyethylene based resin Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- LVEOKSIILWWVEO-UHFFFAOYSA-N tetradecyl 3-(3-oxo-3-tetradecoxypropyl)sulfanylpropanoate Chemical compound CCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCCC LVEOKSIILWWVEO-UHFFFAOYSA-N 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- GRPURDFRFHUDSP-UHFFFAOYSA-N tris(prop-2-enyl) benzene-1,2,4-tricarboxylate Chemical compound C=CCOC(=O)C1=CC=C(C(=O)OCC=C)C(C(=O)OCC=C)=C1 GRPURDFRFHUDSP-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000011787 zinc oxide Substances 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0012—Combinations of extrusion moulding with other shaping operations combined with shaping by internal pressure generated in the material, e.g. foaming
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F10/02—Ethene
-
- 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
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/22—Compounds containing nitrogen bound to another nitrogen atom
- C08K5/23—Azo-compounds
-
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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Abstract
本发明的交联聚烯烃系树脂发泡体为将包含树脂(A)、偶氮二甲酰胺(B)和碱性镁化合物(C)的聚烯烃系树脂组合物交联并发泡而成的交联聚烯烃系树脂发泡体,所述树脂(A)含有聚烯烃系树脂,所述碱性镁化合物(C)为选自氧化镁及氢氧化镁中的至少1种以上,在所述聚烯烃系树脂组合物中,相对于所述树脂(A)100质量份,配合有0.05~0.5质量份所述碱性镁化合物(C),并且所述碱性镁化合物(C)的平均粒径为0.1~15μm。
Description
技术领域
本发明涉及一种将树脂组合物交联并发泡而成的交联聚烯烃系树脂发泡体。
背景技术
目前,在天花板材料、门、仪器面板等汽车用内装材料中,广泛使用将交联聚烯烃系树脂发泡体进行了二次加工的材料。在交联聚烯烃系树脂发泡体的制造中,一般使用偶氮二甲酰胺作为发泡剂。偶氮二甲酰胺在发泡后使微量的分解残渣物残存于树脂中,但其分解残渣物的一部分有升华性,因此,有时成为雾化的原因。雾化是指用作内装材料的树脂材料或由树脂发泡体产生的微量的升华物附着于挡风玻璃等的内面而产生模糊的现象。
为了防止偶氮二甲酰胺导致的雾化,例如在专利文献1中公开了在树脂中与偶氮二甲酰胺一同配合碱性镁化合物和/或碱性钙化合物。
现有技术文献
专利文献
专利文献1:日本专利第3532791号公报
发明内容
发明所要解决的课题
但是,聚烯烃系树脂发泡体有时通过使用挤出机的连续生产来制造。用挤出机生产的情况下,有时因树脂的劣化而产生的滞留物滞留在挤出机内部,但如果滞留物混入于发泡体组合物,则有时在滞留物附近引起破泡,从而产生巨大气泡。这种巨大气泡的产生如专利文献1那样,在配合碱性镁化合物或碱性钙化合物等的情况下,特别容易引起。树脂发泡体如果有巨大气泡,则外观变差,难以作为汽车用内装材料使用。
本发明是鉴于以上的问题点而完成的发明,本发明的课题在于,提供一种聚烯烃系树脂发泡体,其即使在使用挤出机等制造发泡体的情况下,也可合适地防止雾化的产生,并且可以抑制破泡导致的巨大气泡的产生。
用于解决课题的手段
本发明人等潜心研究的结果发现,通过使用规定量的小粒径的特定碱性镁化合物,可以防止偶氮二甲酰胺导致的雾化,并且可以抑制巨大气泡的产生,从而完成了以下的本发明。
(1)一种交联聚烯烃系树脂发泡体,是将聚烯烃系树脂组合物交联并发泡而成的,所述聚烯烃系树脂组合物包含树脂(A)、偶氮二甲酰胺(B)和碱性镁化合物(C),所述树脂(A)含有聚烯烃系树脂,所述碱性镁化合物(C)选自氧化镁及氢氧化镁中的至少1种以上,
在所述聚烯烃系树脂组合物中,相对于所述树脂(A)100质量份,配合有0.05~0.5质量份所述碱性镁化合物(C),并且所述碱性镁化合物(C)的平均粒径为0.1~15μm。
(2)根据上述(1)所述的交联聚烯烃系树脂发泡体,其中,在所述聚烯烃系树脂组合物中,相对于所述树脂(A)100质量份,配合有3~12质量份偶氮二甲酰胺(B)。
(3)根据上述(1)或(2)所述的交联聚烯烃系树脂发泡体,其中,所述树脂(A)含有50质量%以上的聚丙烯系树脂作为所述聚烯烃系树脂。
(4)根据上述(3)所述的交联聚烯烃系树脂发泡体,其中,所述树脂(A)还含有1~50质量%的聚乙烯系树脂作为所述聚烯烃系树脂。
(5)根据上述(1)~(4)中任一项所述的交联聚烯烃系树脂发泡体,其中,所述发泡体的密度为0.02~0.20g/cm3。
(6)一种汽车用内装材料,是通过将上述(1)~(5)中任一项所述的交联聚烯烃系树脂发泡体进一步成型而得到的。
(7)一种交联聚烯烃系树脂发泡体的制造方法,通过挤出机将聚烯烃系树脂组合物挤出,将所挤出的聚烯烃系树脂组合物交联并发泡从而得到交联聚烯烃系树脂发泡体,所述聚烯烃系树脂组合物包含树脂(A)、偶氮二甲酰胺(B)和碱性镁化合物(C),所述树脂(A)含有聚烯烃系树脂,所述碱性镁化合物(C)选自氧化镁及氢氧化镁中的至少1种以上,
在所述聚烯烃系树脂组合物中,相对于所述树脂(A)100质量份,配合有所述碱性镁化合物(C)0.05~0.5质量份,并且所述碱性镁化合物(C)的平均粒径为0.1~15μm。
发明效果
根据本发明,在交联聚烯烃系树脂发泡体中,可以防止偶氮二甲酰胺导致的雾化,并且也可以抑制巨大气泡的产生。
具体实施方式
以下,对本发明利用实施方式更详细地进行说明。
本发明中的聚烯烃系树脂发泡体(以下,有时简称为“发泡体”。)为将包含含有聚烯烃系树脂的树脂(A)、偶氮二甲酰胺(B)和碱性镁化合物(C)的聚烯烃系树脂组合物(以下,有时简称为“树脂组合物”。)交联并发泡而成的。以下,对树脂组合物中所含的各成分详细地进行说明。
[树脂(A)]
作为树脂(A),可举出含有聚丙烯系树脂、聚乙烯系树脂等聚烯烃系树脂的树脂。
(聚丙烯系树脂)
聚丙烯系树脂可举出作为丙烯的均聚物的均聚丙烯、或丙烯与丙烯以外的α-烯烃的共聚物。作为丙烯与丙烯以外的α-烯烃的共聚物,可举出嵌段共聚物、无规共聚物、无规嵌段共聚物,但优选无规共聚物(即无规聚丙烯)。
作为丙烯以外的α-烯烃,可举出:碳原子数2的乙烯、或、1-丁烯、1-戊烯、1-己烯、4-甲基-1-戊烯、1-庚烯、1-辛烯等碳原子数4~10左右的α-烯烃,其中,从成型性及耐热性的观点出发,优选乙烯。予以说明,在共聚物中,这些α-烯烃可以单独使用或组合2种以上而使用。
另外,聚丙烯系树脂既可以单独使用1种,也可以并用2种以上的聚丙烯系树脂。
另外,无规聚丙烯优选使50质量%以上且低于100质量%的丙烯与50质量%以下的丙烯以外的α-烯烃共聚而得到。在此,相对于构成共聚物的总单体成分,丙烯更优选为80~99.9质量%,丙烯以外的α-烯烃为0.1~20质量%,进一步优选丙烯为90~99.5质量%,丙烯以外的α-烯烃为0.5~10质量%,更进一步优选丙烯为95~99质量%,丙烯以外的α-烯烃为1~5质量%。
(聚乙烯系树脂)
作为聚乙烯系树脂,可举出例如:低密度聚乙烯系树脂、中密度聚乙烯系树脂、高密度聚乙烯系树脂、直链状低密度聚乙烯系树脂,其中,优选直链状低密度聚乙烯系树脂(LLDPE)。
直链状低密度聚乙烯系树脂为密度为0.910g/cm3以上且低于0.950g/cm3的聚乙烯,优选密度为0.910~0.930g/cm3的聚乙烯。就发泡体而言,通过含有密度低的直链状低密度聚乙烯系树脂,将树脂组合物加工成发泡体时的加工性或将发泡体成型为成型体时的成型性等容易变得良好。予以说明,上述树脂的密度根据JIS K7112进行测定。
直链状低密度聚乙烯通常为以乙烯为主成分(总单体的50质量%以上、优选70质量%以上、更优选90质量%以上)的、乙烯与少量的α-烯烃的共聚物。在此,作为α-烯烃,可举出碳原子数3~12、优选碳原子数4~10的α-烯烃,具体而言,可举出:1-丁烯、1-戊烯、1-己烯、4-甲基-1-戊烯、1-庚烯、1-辛烯等。予以说明,在共聚物中,这些α-烯烃可以单独使用或组合2种以上而使用。
另外,聚乙烯系树脂既可以单独使用1种,也可以并用2种以上的聚乙烯系树脂。
树脂(A)含有聚烯烃系树脂。树脂(A)可以由上述的聚丙烯系树脂、聚乙烯系树脂、或它们的混合物构成,但也可以含有上述的树脂以外的聚烯烃系树脂成分。
这种树脂成分具体而言可举出:乙烯-丙烯橡胶(EPR)、乙烯-丙烯-二烯橡胶(EPDM)、乙烯-醋酸乙烯酯共聚物、乙烯-丙烯酸共聚物、乙烯-(甲基)烷基丙烯酸酯共聚物、或使这些物质与马来酸酐共聚成的改性共聚物等。
另外,树脂(A)可以由聚烯烃系树脂单独构成,但只要是不阻碍本发明的目的的范围,就可以含有聚烯烃系树脂以外的树脂成分。
相对于树脂组合物中所含的树脂(A)总量,通常含有70质量%以上的聚烯烃系树脂,优选含有80~100质量%,更优选含有90~100质量%。
另外,优选以树脂组合物中所含的树脂(A)总量基准含有树脂(A)50质量%以上的上述的聚丙烯系树脂,更优选含有55~90质量%的上述的聚丙烯系树脂。
在此,聚丙烯系树脂优选为无规聚丙烯,可以为均聚丙烯和无规聚丙烯的混合物。
发泡体通过这样以聚丙烯系树脂为主成分,可以使发泡体的机械强度、耐热性等良好。另外,通过使用聚丙烯系树脂作为主成分,后述的挤出机内部的树脂温度升高,在挤出机内部树脂劣化而容易产生滞留物。如果这种滞留物混入到树脂组合物中,容易成为巨大气泡的主要原因,但在本发明中,通过使用于防止雾化的(C)成分成为小粒径,且配合量也设为一定范围,可以防止巨大气泡的产生。
进而,对于树脂(A),除作为聚烯烃系树脂的上述聚丙烯系树脂之外,优选还含有上述的聚乙烯系树脂。该情况下,相对于树脂组合物中所含的树脂(A)总量,聚乙烯系树脂优选为1~50质量%,更优选含有10~45质量%。
树脂组合物通过除聚丙烯树脂之外还含有聚乙烯系树脂,可以提高机械强度、耐热性等,并且加工性、成型性也容易变得良好。予以说明,聚乙烯系树脂如上所述优选为直链状低密度聚乙烯系树脂。
[偶氮二甲酰胺(B)]
本发明的树脂组合物含有偶氮二甲酰胺(B)。偶氮二甲酰胺(B)为通过加热而分解并进行发泡的热分解型发泡剂,例如在后述的工序(3)中进行分解而使树脂组合物发泡。
在树脂组合物中,相对于树脂(A)100质量份,优选配合2~20质量份偶氮二甲酰胺(B),更优选配合3~12质量份。
通过将(B)成分的配合量设为上述范围内,可以在不使发泡体的气泡破裂的情况下而适当地容易进行发泡。另外,也可以对发泡倍率比较高的(即密度低的)发泡体进行成型。
另外,树脂组合物含有聚丙烯系树脂作为主成分的情况下,树脂组合物的发泡(即(B)成分的分解)在比较高温的环境下进行。因此,(B)成分的分解残渣虽然容易以升华物的形式产生,即使在这种情况下,通过使用一定量的后述的规定的(C)成分,也容易防止因(B)成分的升华物而产生的雾化。
[碱性镁化合物(C)]
本发明中所使用的碱性镁化合物(C)为选自氧化镁及氢氧化镁中的至少1种以上。本发明的树脂组合物作为(C)成分,可以仅含有氧化镁及氢氧化镁中的一种,也可以含有两者。
本发明中,如上所述,偶氮二甲酰胺(B)通过加热而被分解时,其一部分成为升华物,但通过含有(C)成分而防止这种升华物导致的雾化的产生。另外,通过使(C)成分为小粒径,可抑制巨大气泡的产生。
碱性镁化合物(C)的平均粒径具体而言为0.1~15μm。通过将平均粒径设为上述范围内,在发泡体中难以形成巨大气泡,也可以抑制雾化的产生。从这些观点出发,碱性镁化合物(C)的平均粒径优选为0.2~10μm,更优选为0.3~5μm。
予以说明,碱性镁化合物(C)的平均粒径为中值粒径(D50),具体而言用实施例记载的方法进行测定。
树脂组合物中,相对于树脂(A)100质量份,配合0.05~0.5质量份碱性镁化合物(C)。通过将(C)成分的配合量设为上述范围内,可以防止发泡体中的巨大气泡的产生,也可以充分地抑制雾化的产生。
从以上的观点出发,优选相对于树脂(A)100质量份,配合0.05~0.4质量份碱性镁化合物(C),更优选配合0.05~0.3质量份。
本发明的树脂组合物除上述的(A)、(B)及(C)成分以外,也可以含有添加剂。作为树脂组合物中所含的优选的添加剂,可举出交联助剂及抗氧化剂。这些物质既可以两者均含有,也可以仅含有一种。
(交联助剂)
作为交联助剂,可以使用多官能单体。可举出例如:三羟甲基丙烷三甲基丙烯酸酯、三羟甲基丙烷三丙烯酸酯等3官能(甲基)丙烯酸酯系化合物;偏苯三酸三烯丙酯、1,2,4-苯三甲酸三烯丙酯、三烯丙基异氰脲酸酯等1分子中具有3个官能团的化合物;1,6-己二醇二甲基丙烯酸酯、1,9-壬二醇二甲基丙烯酸酯、1,10-癸二醇二甲基丙烯酸酯、新戊二醇二甲基丙烯酸酯等2官能(甲基)丙烯酸酯系化合物、二乙烯基苯等1分子中具有2个官能团的化合物;邻苯二甲酸二烯丙酯、对苯二甲酸二烯丙酯、间苯二甲酸二烯丙酯、乙基乙烯基苯、月桂基甲基丙烯酸酯、甲基丙烯酸十八烷基酯等。交联助剂可以单独使用或组合2种以上而使用。其中,更优选3官能(甲基)丙烯酸酯系化合物。
通过在树脂组合物中添加交联助剂,可以以少的电离性射线量将树脂组合物交联。因此,可以防止伴随电离性射线的照射而发生的各树脂分子的断裂、劣化。
至于交联助剂的含量,优选相对于树脂(A)100质量份为0.2~10质量份,更优选为0.5~7质量份,进一步优选为1~5质量份。若该含量为0.2质量份以上,则将树脂组合物进行发泡时,容易调整为所期望的交联度。另外,若其为10质量份以下,则容易控制赋予树脂性组合物的交联度。
(抗氧化剂)
作为抗氧化剂,可举出酚系抗氧化剂、硫系抗氧化剂、磷系抗氧化剂、胺系抗氧化剂等,其中,优选酚系抗氧化剂、硫系抗氧化剂,更优选将酚系抗氧化剂和硫系抗氧化剂组合而使用。
例如,作为酚系抗氧化剂,可举出:2,6-二叔丁基-对甲酚、正十八烷基-3-(3,5-二叔丁基-4-羟基苯基)丙酸酯、2-叔丁基-6-(3-叔丁基-2-羟基-5-甲基苄基)-4-甲基苯基丙烯酸酯、四[亚甲基-3-(3,5-二叔丁基-4-羟基苯基)丙酸酯]甲烷等。这些酚系抗氧化剂可以单独使用,也可以并用2种以上。
另外,作为硫系抗氧化剂,可举出例如:二月桂基硫代二丙酸酯、二(十四烷基)硫代二丙酸酯、二(十八烷基)硫代二丙酸酯、季戊四醇基四(3-月桂基硫代丙酸酯)等。这些硫系抗氧化剂可以单独使用,也可以并用2种以上。
至于抗氧化剂的含量,优选相对于树脂(A)100质量份为0.1~10质量份,更优选为0.2~5质量份。
另外,树脂组合物可以根据需要含有氧化锌、硬脂酸锌、尿素等分解温度调整剂、阻燃剂、金属危害防治剂、防静电剂、稳定剂、填充剂、颜料等上述以外的添加剂。进而,树脂组合物可以含有(B)成分以外的发泡剂。
<发泡体>
本发明的发泡体是将上述的树脂组合物交联且发泡而成的。发泡体的交联度优选为30~55%,更优选为32~50%。
通过使发泡体的交联度为上述的范围,可以使机械强度、柔软性、成型性均衡地提高。予以说明,发泡体的交联度的测定方法如后述的实施例所记载的那样。
发泡体优选为片状。另外,发泡体的厚度没有特别限定,优选为0.5~10mm,更优选为0.8~8mm。
具有这种厚度的发泡体可以适当地成型为汽车用内装材料。
发泡体的密度(表观密度)没有特别限定,为了使柔软性和强度均衡地良好,优选为0.02~0.20g/cm3,更优选为0.03~0.15g/cm3。
发泡体通过以高倍率进行发泡,这样成为比较的低密度时,一般而言,容易引起破泡而产生巨大气泡,但本发明中,如上所述,用于防止雾化的(C)成分为小粒径,且使用量也为一定量,因此,不易产生巨大气泡。
<发泡体的制造方法>
本发明一个实施方式的发泡体的制造方法为:将至少含有(A)、(B)、及(C)成分的树脂组合物通过挤出机挤出,将该挤出的树脂组合物交联并发泡,得到交联聚烯烃系树脂发泡体。本制造方法具体而言优选具有以下的工序(1)~(3)。
工序(1):将上述(A)、(B)、(C)成分及根据需要所配合的其它添加剂供给至挤出机,在低于作为(B)成分的偶氮二甲酰胺的分解温度的温度下进行熔融、混炼之后,从挤出机中挤出而得到片状等规定形状的树脂组合物的工序;
工序(2):对工序(1)中得到的树脂组合物照射电离性射线并使其交联的工序;
工序(3):将工序(2)中交联的树脂组合物加热至偶氮二甲酰胺(B)的分解温度以上而进行发泡,得到发泡体的工序。
作为本制造方法中所使用的挤出机,可举出例如单螺杆挤出机、双螺杆挤出机等。另外,挤出机内部的树脂温度优选为130~195℃,更优选为160~195℃。
另外,作为工序(2)中所使用的电离性射线,可以列举α射线、β射线、γ射线、电子束等,但优选电子束。电离性射线的照射量只要可以得到所期望的交联度即可,优选为0.1~10Mrad,更优选为0.2~5Mrad。电离性射线的照射量受(A)、(B)、(C)成分及其它的添加剂等影响,因此,通常一边测定交联度,一边照调整射量。
工序(3)中,使树脂组合物进行加热发泡的温度通常为200~290℃,优选为220~280℃。
另外,工序(3)中,发泡体可以在发泡后沿着MD方向或CD方向的一个方向或两个方向进行拉伸,或者一边进行发泡、一边沿着MD方向或CD方向的一个方向或两个方向进行拉伸。
予以说明,以上说明的制造方法为本发明的制造方法的一个实施方式,发泡体可以用其它制造方法来制造。
[成型体]
本发明中,上述发泡体优选以发泡体单一体、或根据需要在与不同种材料重叠的基础上用公知的方法进行成型而制成成型体。作为成型方法,可举出真空成型、压缩成型、冲压成型等,其中,优选真空成型。另外,真空成型有凸模真空成型、凹模真空成型,但优选为凹模真空成型。另外,作为不同种材料,可举出树脂片、热塑性弹性体片、布帛等片状的材料。
成型体可以用于各种用途,但优选作为汽车的天花板材料、门、仪器面板等汽车用内装材料使用。
实施例
以下,通过实施例进一步详细地说明本发明,但本发明并不受这些例子的任何限定。
各物性的测定方法及发泡体的评价方法如下所述。
(1)平均粒径
碱性镁化合物的平均粒径为根据HELOS(H2731)、以分散压:2.00bar、引压:72.00mbar所测定的中值粒径(D50)。
(2)交联度
从发泡体中采取约100mg的试验片,精确称量试验片的质量A(mg)。接着,将该试验片浸渍于120℃的二甲苯30cm3中并放置24小时后,用200网眼的金属网进行过滤而采取金属网上的不溶解成分进行真空干燥,精确称量不溶解成分的质量B(mg)。由得到的值利用下述式算出交联度(质量%)。
交联度(质量%)=100×(B/A)
(3)密度
发泡体的密度(表观密度)根据JIS K 7222进行测定。
(4)发泡体的厚度
用千分尺进行测量。
(5)雾化评价
雾化评价通过用以ISO6452为基准的设备将发泡体在100℃下熟化20小时后、测定雾度而进行。予以说明,雾度使用日本电色工业社制NDH-300A进行测定。将雾度为15%以下的情况设为合格。
(6)巨大气泡
通过目视观察是否在得到的发泡体中有巨大气泡。目视观察通过在实施例、比较例中得到的片厚度4mm的发泡体中使照度3,000lx的光透过而进行,将巨大气泡为1个以下/3m2的情况设为“A”,将其多于1个/3m2的情况设为“B”。
实施例1~8、比较例1~7
各实施例、比较例中,以表1、2所示的份数将表1、2所示的各成分投入于单螺杆挤出机,在树脂温度190℃下进行熔融混炼而挤出,得到厚度2.0mm的片状的树脂组合物。在该片状的树脂组合物的两面以加速电压800kV、以1Mrad的照射量照射电子束,由此将树脂组合物交联。其后,利用热风烘箱将交联的树脂组合物在250℃下加热5分钟,其通过加热进行发泡而制成厚度4mm的发泡片(发泡体)。将各实施例、比较例的发泡体的评价结果示于表1、2。
[表1]
[表2]
※予以说明,表1、2中,“氧化”表示碱性镁化合物为氧化镁,“氢氧化”表示碱性镁化合物为氢氧化镁。
表1、2中的树脂及添加剂如下所述。
无规PP:乙烯-丙烯无规共聚物制品名:EG7F、日本聚Pro社制、MFR=1.3g/10分、乙烯量:3质量%
LLDPE:直链状低密度聚乙烯、制品名:5220G、道化学日本社制、密度:0.915g/cm3
交联助剂:三羟甲基丙烷三甲基丙烯酸酯
抗氧化剂1:2,6-二叔丁基-对甲酚
抗氧化剂2:二月桂基硫代二丙酸酯
以上的实施例1~8中,通过配合规定量的小粒径的碱性镁化合物,可以防止雾化的产生,并且抑制巨大气泡的产生,可以得到能够作为汽车用内装材料优选使用的发泡体。
与此相对,比较例1、4、5、7中,未配合碱性镁化合物或配合量少,因此,不能充分地抑制雾化。另一方面,比较例2中,可以抑制雾化,但由于碱性镁的配合量过多,因此可看到巨大气泡,外观变差。进而,比较例3、6中,由于碱性镁的粒径大,因此,虽然配合量适当,但是,不能充分地抑制雾化,进而,可看到巨大气泡而外观也变差。
Claims (6)
1.一种交联聚烯烃系树脂发泡体,是作为汽车用内装材料使用的,
所述发泡体是将聚烯烃系树脂组合物交联并发泡而成的,所述聚烯烃系树脂组合物包含树脂(A)、偶氮二甲酰胺(B)和碱性镁化合物(C),所述树脂(A)含有聚烯烃系树脂,所述碱性镁化合物(C)选自氧化镁和氢氧化镁中的至少1种以上,
在所述聚烯烃系树脂组合物中,相对于所述树脂(A)100质量份,配合有0.05~0.5质量份所述碱性镁化合物(C),并且所述碱性镁化合物(C)的平均粒径为0.1~15μm,
所述发泡体的密度为0.02~0.20g/cm3。
2.根据权利要求1所述的交联聚烯烃系树脂发泡体,在所述聚烯烃系树脂组合物中,相对于所述树脂(A)100质量份,配合有3~12质量份偶氮二甲酰胺(B)。
3.根据权利要求1或2所述的交联聚烯烃系树脂发泡体,所述树脂(A)含有50质量%以上的聚丙烯系树脂作为所述聚烯烃系树脂。
4.根据权利要求3所述的交联聚烯烃系树脂发泡体,所述树脂(A)还含有1~50质量%的聚乙烯系树脂作为所述聚烯烃系树脂。
5.一种汽车用内装材料,是通过将权利要求1~4中任一项所述的交联聚烯烃系树脂发泡体进一步成型而得到的。
6.一种交联聚烯烃系树脂发泡体的制造方法,通过挤出机将聚烯烃系树脂组合物挤出,将所挤出的聚烯烃系树脂组合物交联并发泡从而得到交联聚烯烃系树脂发泡体,所述聚烯烃系树脂组合物包含树脂(A)、偶氮二甲酰胺(B)和碱性镁化合物(C),所述树脂(A)含有聚烯烃系树脂,所述碱性镁化合物(C)选自氧化镁和氢氧化镁中的至少1种以上,
在所述聚烯烃系树脂组合物中,相对于所述树脂(A)100质量份,配合有0.05~0.5质量份所述碱性镁化合物(C),并且所述碱性镁化合物(C)的平均粒径为0.1~15μm,
所述发泡体的密度为0.02~0.20g/cm3。
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CN111592703B (zh) * | 2020-05-18 | 2022-08-16 | 广德祥源新材科技有限公司 | 环保型交联聚烯烃发泡材料及其制备方法 |
CN112225938A (zh) * | 2020-09-27 | 2021-01-15 | 惠州市峄董塑胶科技有限公司 | 关于各种塑胶发泡的配方及工艺 |
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