AU2014349559B2 - Flame-resistant, termite-repellent cable - Google Patents
Flame-resistant, termite-repellent cable Download PDFInfo
- Publication number
- AU2014349559B2 AU2014349559B2 AU2014349559A AU2014349559A AU2014349559B2 AU 2014349559 B2 AU2014349559 B2 AU 2014349559B2 AU 2014349559 A AU2014349559 A AU 2014349559A AU 2014349559 A AU2014349559 A AU 2014349559A AU 2014349559 B2 AU2014349559 B2 AU 2014349559B2
- Authority
- AU
- Australia
- Prior art keywords
- termite
- resistant
- equal
- flame
- mass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000005871 repellent Substances 0.000 title abstract 3
- 239000004743 Polypropylene Substances 0.000 claims abstract description 138
- -1 polypropylene Polymers 0.000 claims abstract description 122
- 229920001155 polypropylene Polymers 0.000 claims abstract description 112
- 239000000203 mixture Substances 0.000 claims abstract description 85
- 229920005989 resin Polymers 0.000 claims abstract description 49
- 239000011347 resin Substances 0.000 claims abstract description 49
- 229920001384 propylene homopolymer Polymers 0.000 claims abstract description 15
- 241000256602 Isoptera Species 0.000 claims description 194
- 239000004800 polyvinyl chloride Substances 0.000 claims description 47
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 47
- 239000003063 flame retardant Substances 0.000 claims description 37
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 34
- 238000012360 testing method Methods 0.000 claims description 11
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 9
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 9
- 229920002554 vinyl polymer Polymers 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 229920002943 EPDM rubber Polymers 0.000 claims description 4
- 229920005606 polypropylene copolymer Polymers 0.000 claims description 4
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 4
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 3
- 229920003244 diene elastomer Polymers 0.000 claims description 2
- 239000004677 Nylon Substances 0.000 description 24
- 229920001778 nylon Polymers 0.000 description 24
- 238000000034 method Methods 0.000 description 11
- 239000000314 lubricant Substances 0.000 description 10
- 239000003963 antioxidant agent Substances 0.000 description 9
- 238000011156 evaluation Methods 0.000 description 9
- 239000011342 resin composition Substances 0.000 description 9
- 239000004065 semiconductor Substances 0.000 description 9
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical group C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 8
- 230000003078 antioxidant effect Effects 0.000 description 8
- 229920003023 plastic Polymers 0.000 description 8
- 239000004033 plastic Substances 0.000 description 8
- 239000004020 conductor Substances 0.000 description 6
- 239000003484 crystal nucleating agent Substances 0.000 description 6
- 238000004898 kneading Methods 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000007765 extrusion coating Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 229920001400 block copolymer Polymers 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 150000004985 diamines Chemical class 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000002667 nucleating agent Substances 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229940059574 pentaerithrityl Drugs 0.000 description 3
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 3
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000002952 polymeric resin Substances 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 2
- 229920000299 Nylon 12 Polymers 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229920001893 acrylonitrile styrene Polymers 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 150000001993 dienes Chemical class 0.000 description 2
- 229920005669 high impact polystyrene Polymers 0.000 description 2
- 239000004797 high-impact polystyrene Substances 0.000 description 2
- 229920003049 isoprene rubber Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 150000003918 triazines Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- BPXVHIRIPLPOPT-UHFFFAOYSA-N 1,3,5-tris(2-hydroxyethyl)-1,3,5-triazinane-2,4,6-trione Chemical compound OCCN1C(=O)N(CCO)C(=O)N(CCO)C1=O BPXVHIRIPLPOPT-UHFFFAOYSA-N 0.000 description 1
- PTJWCLYPVFJWMP-UHFFFAOYSA-N 2-[[3-hydroxy-2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)COCC(CO)(CO)CO PTJWCLYPVFJWMP-UHFFFAOYSA-N 0.000 description 1
- WDQMWEYDKDCEHT-UHFFFAOYSA-N 2-ethylhexyl 2-methylprop-2-enoate Chemical compound CCCCC(CC)COC(=O)C(C)=C WDQMWEYDKDCEHT-UHFFFAOYSA-N 0.000 description 1
- ROGIWVXWXZRRMZ-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1 ROGIWVXWXZRRMZ-UHFFFAOYSA-N 0.000 description 1
- VEORPZCZECFIRK-UHFFFAOYSA-N 3,3',5,5'-tetrabromobisphenol A Chemical compound C=1C(Br)=C(O)C(Br)=CC=1C(C)(C)C1=CC(Br)=C(O)C(Br)=C1 VEORPZCZECFIRK-UHFFFAOYSA-N 0.000 description 1
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 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 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 208000037062 Polyps Diseases 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000000676 alkoxyimino group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [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 1
- 230000005684 electric field Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229960001545 hydrotalcite Drugs 0.000 description 1
- 229910001701 hydrotalcite Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- QWDJLDTYWNBUKE-UHFFFAOYSA-L magnesium bicarbonate Chemical compound [Mg+2].OC([O-])=O.OC([O-])=O QWDJLDTYWNBUKE-UHFFFAOYSA-L 0.000 description 1
- 229910000022 magnesium bicarbonate Inorganic materials 0.000 description 1
- 235000014824 magnesium bicarbonate Nutrition 0.000 description 1
- 239000002370 magnesium bicarbonate Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920005678 polyethylene based resin Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005673 polypropylene based resin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920006132 styrene block copolymer Polymers 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- LTURHSAEWJPFAA-UHFFFAOYSA-N sulfuric acid;1,3,5-triazine-2,4,6-triamine Chemical compound OS(O)(=O)=O.NC1=NC(N)=NC(N)=N1 LTURHSAEWJPFAA-UHFFFAOYSA-N 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- BHYQWBKCXBXPKM-UHFFFAOYSA-N tris[3-bromo-2,2-bis(bromomethyl)propyl] phosphate Chemical compound BrCC(CBr)(CBr)COP(=O)(OCC(CBr)(CBr)CBr)OCC(CBr)(CBr)CBr BHYQWBKCXBXPKM-UHFFFAOYSA-N 0.000 description 1
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2274/00—Thermoplastic elastomer material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Insulated Conductors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Laminated Bodies (AREA)
- Organic Insulating Materials (AREA)
Abstract
This flame-resistant, termite-repellent cable is provided with a sheath, the sheath is provided at the surface with a polypropylene termite-repellent layer formed from a polypropylene composition, the polypropylene composition contains (A) a propylene homopolymer and (B) a resin component having a solubility parameter of 7.0-9.5 inclusive, the tensile strength (S
Description
2014349559 10 Mar 2017
DESCRIPTION
FLAME-RESISTANT TERMITE-RESISTANT CABLE 5 The present invention relates to a flame- resistant termite-resistant cable having termite resistance that prevents feeding damage by termites (termite damage) along with having flame-resistance.
As examples of a cable, there is an 10 electric power cable, a communication cable, etc. These cables have a sheath provided on their outermost layer as an outer protection layer. The sheath is typically formed by performing extrusion coating with use of a common resin such as low 15 density polyethylene or polyvinyl chloride.
However, in a case of burying a cable in the ground, a sheath formed of the above-described common resin is susceptible to feeding damage by termites (termite damage). When a sheath receives 20 damage from termites, the properties of the sheath such as insulation deteriorates and degrades electric power and data transmission.
The use of nylon as the sheath of a cable is proposed for suppressing termite damage of the 25 sheath (see, for example, Patent Document 1).
Because nylon is rigid and has satisfactory strength, nylon is strong against termite damage and has a satisfactory termite resistance. In addition, nylon is resistant against damage and has satisfactory 30 outer-damage resistance. Specifically, Patent
Document 1 proposes a termite-resistant cable having a double-layer structure in which a nylon termite-resistant layer formed of a nylon having termite resistance is layered on a PVC layer formed of 5 polyvinyl chloride (hereinafter also referred to as "PVC") having flame-resistance.
However, nylon has a problem of having low flame-resistance compared to PVC or the like. That is, with the termite-resistant cable of Patent 10 Document 1, it is difficult for the cable to satisfy a required high flame resistance (i.e., to pass the IEEE std. 383 test) because the nylon termite-resistant layer having low flame resistance is provided on an outermost surface of the cable. 15 Although there is a method of adding a large amount of flame retardant for improving the flame resistance of the nylon termite-resistant layer, the mechanical strength of the nylon termite-resistant layer may be degraded and result in the nylon 20 termite-resistant layer receiving outer-damage when the cable is placed.
Therefore, another PVC layer having flame resistance is provided around the circumference of the nylon termite-resistant layer having low flame 25 resistance. That is, the sheath is formed with a triple-layer structure in which a PVC layer, a nylon termite-resistant layer, and a PVC layer are layered in order from an inner side. Thus, a termite-resistant cable having the triple-layer structure 30 has satisfactory flame resistance. diameter outer
However, because the termite-resistant cable has the triple-layer structure, the termite-resistant cable has problems of large 2014349559 10 Mar 2017 and heavy weight. Further, the termite-resistant cable has high cost due to the use of expensive nylon .
In order to solve such problems, there is 5 proposed a flame-resistant termite-resistant cable using polypropylene (hereinafter also referred to as "PP") having rigidity greater than or equal to 60 (Shore D) as a sheath instead of using nylon (see, for example, Patent Document 2) . PP not only has 10 greater flame resistance than nylon but also satisfactory termite resistance by having a predetermined rigidity. In Patent Document 2, a PP termite-resistant layer formed of PP having high rigidity is provided instead of a nylon termite-15 resistant layer. For example, there is provided a sheath having a double-layer structure in which a PVC layer formed of PVC having an oxygen index of 30 and a PP termite-resistant layer formed of PP having a rigidity of 60 with an oxygen index of 20 are 20 layered in order from the inner side. By using the flame-resistant termite-resistant cable of Patent Document 2, its outer diameter and weight can be reduced. Further, the flame-resistant termite-resistant cable is inexpensive and has satisfactory 25 termite resistance and a flame resistant property. Patent Literature 1: Japanese Laid-Open Patent Publication No. 3-15114
Patent Literature 2: Japanese Laid-Open Patent Publication No. 2012-174574 30 In a case where a cable is buried in the ground, the cable is placed in, for example, a pipeline. When placing the cable, the cable is extended by drawing the cable into the pipeline and 2014349559 10 Mar 2017 -4- moving the cable.
However, with the flame-resistant termite-resistant cable having a PP termite-resistant layer on its outermost surface as shown in Patent Document 5 2, the PP termite-resistant layer may peel due to the cable being dragged when extending the cable by moving the cable. This is because the PP termite-resistant layer of Patent Document 2 is susceptible to damage by friction and has an insufficient outer-10 damage resistance.
The present invention aims to provide a flame-resistant termite-resistant cable that has satisfactory termite resistance and flame-resistance along with satisfactory outer-damage resistance. 15 As described above, although nylon is hard and has satisfactory rigidity, nylon has insufficient flame resistance. On the other hand, the high rigidity polypropylene (hereinafter also referred to as "PP") shown in Patent Document 2 is 20 hard and has satisfactory flame resistance, but has low strength (tensile strength) compared to nylon. That is, the high rigidity PP cannot attain a tensile strength as much as that of nylon.
Therefore, the PP termite-resistant layer formed of 25 high rigidity PP cannot endure the tension that is created and becomes damaged and is peeled when friction or the like is caused when the cable is pulled during the extension of the cable. Thus, the _ C._ PP termite-resistant layer has insufficient outer- damage resistance.
Therefore, the inventors of the present invention focused on the stress/strain curve (so-5 called SS curve) and investigated on a PP which not only has satisfactory termite resistance but also has satisfactory outer-damage resistance.
The SS curve that is obtained by a tension test of resin shows the correlation between stress 10 (tensile stress) and strain (ductility). Typically, when resin is pulled, elongation and stress that attempts to resist against the force of the ductility are generated. An SS curve can be obtained by assuming that the elongation is 15 indicated by a horizontal axis and that the stress (i.e., tensile strength) is indicated by a vertical axis. By using the SS curve, the mechanical characteristics of the resin can be understood. Typically, the SS curve has an area in which tensile 20 strength linearly increases with respect to ductility (elasticity area) and an area in which tensile strength only moderately increases due to plastic deformation of the resin (plastic deformation area). The point where the elasticity 25 areas changes to the plastic deformation area is a yield point. The yield point is a point that indicates the start of the plastic deformation of the resin. The tensile strength at the yield point indicates the tensile strength at the time when the 30 plastic deformation of the resin begins. The greater the tensile strength at the yield point, the more difficult plastic deformation of resin becomes. Assuming that "Si" is the tensile strength at the -6- yield point and "S2" is the elongation percentage at the yield point, a slope (S1 /S2) indicates the tensile strength per unit elongation, that is, inductility. The greater the S1/S2, the smaller the 5 ductility.
By investigating the SS curve of the high rigidity PP, it is confirmed that a high tensile strength can be attained together with a small slope (S1/S2) and a large ductility depending on the 10 composition of the PP. That is, even with the high rigidity PP, it is confirmed that the high rigidity PP has a low outer-damage resistance in a case where the ductility is large. Accordingly, the inventors of the present invention have found that, not only a 15 large tensile strength but also inductility (small ductility) is essential for improving the outer-damage resistance of PP.
Thus, the inventors of the present invention have investigated on how to reduce 20 elongation of PP. As a result of the investigation, the inventors of the present invention found it significant to add PP with a resin that has a solubility parameter greater than or equal to 7.0 and less than or equal to 9.5 and has satisfactory 25 compatibility with PP. By using this PP resin composition, the tensile strength Si at the yield point is greater than or equal to 27 MPa, and the slope (S1 /S2) of the tensile strength Si and the elongation percentage S2 at the yield point is 30 greater than or equal to 2.8. Further, the PP resin composition not only has high tensile strength but also has small ductility. Therefore, satisfactory termite resistance and satisfactory outer-damage 2014349559 10 Mar 2017 -7- resistance can be obtained with a termite-resistant layer formed of the PP resin composition.
According to the present invention, there is provided a flame-resistant termite-resistant 5 cable including a sheath. The flame-resistant termite-resistant cable includes the sheath having a surface on which a polypropylene termite-resistant layer including a polypropylene composition is provided. The polypropylene composition contains 10 (A) a propylene homopolymer and (B) a resin component having a solubility parameter greater than or equal to 7.0 and less than or equal to 9.5. A tensile strength Si of the polypropylene composition is greater than or equal to 27 MPa at a yield point 15 in a tension test. A slope Si/S2 of the tensile strength Si and an elongation percentage S2 of the polypropylene composition is greater than or equal to 2.8 at the yield point.
According to a second embodiment of the 20 present invention, the polypropylene composition contains (A) the propylene homopolymer being greater than or equal to 90% by mass and less than 100% by mass and (B) the resin component being greater than 0% by mass and less than or equal to 10% by mass 25 with respect to the total of (A) the propylene homopolymer and (B) the resin component being 100% by mass .
According to a third embodiment of the present invention, (B) the resin component includes 30 one of or a combination of two kinds of a copolymer of propylene and an a olefin other than propylene, a vinyl resin, a diene rubber, an ethylene-propylene rubber, an ethylene-propylene-diene rubber, and a thermoplastic elastomer. 5 According to a fourth embodiment of the present invention, the polypropylene composition further contains a flame retardant having a melting peak temperature less than or equal to 230 °C, the flame retardant content being greater than or equal 10 to 1% by mass and less than or equal to 10% by mass with respect to the total of (A) the propylene homopolymer and (B) the resin component being 100% by mass .
According to a fifth embodiment of the 15 present invention, the polypropylene composition further contains a flame retardant having a peak mass loss rate of 1% at a temperature less than or equal to 300 °C, the flame retardant content being greater than or equal to 1% by mass and less than or 20 equal to 10% by mass with respect to the total of (A) the propylene homopolymer and (B) the resin component being 100% by mass.
According to a sixth embodiment of the present invention, the sheath includes a double-25 layer structure in which a polyvinyl chloride layer formed of a polyvinyl chloride composition and the polypropylene termite-resistant layer are layered from an inner side to the surface.
According to a seventh embodiment of the 3 0 present invent ion, polypropylene termite-resistant layer has a thickness greater than or equal to 0.5 mm and less than or equal to 50% of a thickness of the polyvinyl chloride layer. -Si- 2014349559 10 Mar 2017
According to embodiments of the present invention, a flame-resistant termite-resistant cable having satisfactory termite resistance, flame resistance, and outer-damage resistance can be 5 obtained.
The invention is described, by way of nonlimiting example only, with reference to the accompanying drawings, which are briefly described as follows . 10 Fig.l is cross-sectional view of a flame- resistant termite-resistant cable according to an embodiment of the present invention;
Fig. 2 is a diagram illustrating a correlation between the tensile strength of a 15 polypropylene composition at a yield point and a slope S1/S2 of the tensile strength Si and the elongation percentage S2 of the polypropylene composition at a yield point according to a practical example; 20 Fig. 3 is a diagram for describing an evaluation of termite resistance according to a practical example; and
Fig. 4 is a diagram for describing an outer-damage resistance test of a flame-resistant 25 termite-resistant cable according to a practical example, in which (a) is a diagram viewed from a side direction, (b) is a diagram viewed from a cross-sectional direction, and (c) is an enlarged view of the dotted area in (a). 30 [Embodiments of present invention]
Next, a flame-resistant termite-resistant cable according to an embodiment of the present invention is described. Although a flame-resistant termite-resistant cable used as an electric power -10- cable is described below, the flame-resistant termite-resistant cable of the present invention is not limited to the electric power cable. For example, the flame-resistant termite-resistant cable 5 may also be used as a communication cable or the like .
Fig. 1 is a cross-sectional view illustrating the flame-resistant termite-resistant cable according to an embodiment of the present 10 invent ion .
As illustrated in Fig. 1, the flame-resistant termite-resistant cable 1 of this embodiment includes a conductor 10. An internal semiconductor layer 11, an insulation layer 12, an 15 external semiconductor layer 13, a shield layer 14, a pressing tape 15, a water-shielding layer 16, and a sheath 17 are provided on an outer periphery of the conductor 10 in this order. The sheath 17 has a double-layer structure in which a polyvinyl chloride 20 layer 17a formed of a polyvinyl chloride composition and a polypropylene termite-resistant layer 17b formed of a polypropylene compound are layered from an inner side of the flame-resistant termite-resistant cable 1 to an outer surface of the flame-25 resistant termite-resistant cable 1.
Except for using the polypropylene termite-resistant layer 17b for the flame-resistant termite-resistant cable 1, conventionally known components may be used for the flame-resistant 30 termite-resistant cable 1. The conductor 10 may be formed of, for example, copper or aluminum. The internal semiconductor layer is formed of a semiconductive resin composition containing, for 1- example, a conducting agent (e.g., carbon black) or a resin component such as an ethylene-vinyl acetate copolymer. The insulation layer 12 may be formed of an insulating resin compound including a resin 5 component such as polyethylene. Similar to the internal semiconductor layer 11, the external semiconductor layer 13 is formed of a semiconductive resin compound. The shield layer 14 has a shielding property that shields an electric field generated by 10 the conductor 10. The shield layer 14 is formed of, for example, an annealed copper tape. The pressing tape 15 is formed by, for example, winding a non-woven fabric tape or a semiconductive tape around an outer periphery of the shield layer 14. The water 15 shielding layer 16 is formed of, for example, an aluminum laminated water shielding tape.
The sheath 17 has a double-layer structure in which the polyvinyl chloride layer 17a and the polypropylene layer 17b are layered from an inner 20 side to the surface.
The polyvinyl chloride layer 17a is formed of a polyvinyl chloride compound and has satisfactory flame resistance. Although the termite resistance of the polyvinyl chloride layer 17a may 25 be insufficient, the polyvinyl chloride layer 17a is covered and protected by the polypropylene termite-resistant layer 17b having satisfactory termite resistance as described below. A conventionally known component may be used as the polyvinyl 30 chloride composition. The thickness of the polyvinyl chloride layer 17a is not limited in particular. However, from the standpoint of attaining flame resistance, the thickness of the Ί Ο polyvinyl chloride layer 17a is preferably greater than or equal to 4% of the outer diameter of the flame-resistant termite-resistant cable 1, and more preferably, greater than or equal to 2 mm and less 5 than or equal to 10 mm. If the thickness of the polyvinyl chloride layer 17a is less than 2 mm, the polyvinyl chloride layer 17a may be unable to attain sufficient flame resistance. On the other hand, although flame resistance improves if the thickness 10 of the polyvinyl chloride layer 17a is greater than 10 mm, the increase of the outer diameter of the flame-resistant termite-resistant cable 1 may degrade flexibility of the flame-resistant termite-resistant cable 1 and cause difficulty in inserting 15 the flame-resistant termite-resistant cable 1 into a pipeline .
The polypropylene termite-resistant layer 17b is formed of the below-described polypropylene composition and has satisfactory flame resistance, 20 termite resistance, and outer-damage resistance.
The polypropylene termite-resistant layer 17b is formed on the outer periphery of the polyvinyl chloride layer 17a. The polypropylene termite-resistant layer 17b covers and protects the 25 polyvinyl chloride layer 17a having insufficient termite resistance. The thickness of the polypropylene layer 17b is not limited in particular. However, from the standpoint of attaining characteristics such as termite resistance and 30 outer-damage resistance, the thickness of the polypropylene layer 17b is preferably greater than or equal to 0.5 mm, and more preferably, greater than or equal to 0.5 mm and less than or equal to 2 -13mm. If the thickness of the polypropylene layer 17b is less than 0.5 mm, the polypropylene layer 17b may be unable to sufficiently attain its characteristics. On the other hand, if the thickness of the 5 polypropylene layer 17b is greater than 2 mm, the polypropylene layer 17b may be unable attain its characteristics (e.g., flame resistance) despite of its thickness. In addition, the increase of the outer diameter of the flame-resistant termite-10 resistant cable 1 may degrade flexibility of the flame-resistant termite-resistant cable 1. Further, the thickness of the polypropylene layer 17b is preferably less than or equal to 50% of the thickness of the polyvinyl chloride layer 17a. 15 Owing to the configuration described above, the flame-resistant termite-resistant cable 1 can attain an appropriate degree of flame resistance and termite resistance.
Note that the sheath 17 is formed by 20 extrusion coating the polyvinyl chloride composition and the polypropylene composition on the outer periphery of the water-shielding layer 16. In performing the extrusion coating, a layer of the polyvinyl chloride composition and a layer of the 25 polypropylene composition may be simultaneously extrusion coated to form the two layers consisting of the polyvinyl chloride layer 17a and the polypropylene termite-resistant layer 17b. Alternatively, the two layers may be formed by 30 extrusion coating one layer at a time. <Polypropylene composition>
Next, a propylene composition included in the polypropylene termite-resistant layer 17b is described .
The propylene composition contains (A) a propylene homopolymer and (B) a resin component having a solubility parameter that is greater than 5 or equal to 7.0 and less than or equal to 9.5. The propylene composition is obtained by kneading the propylene homopolymer and the resin component. The component (A) is a homopolymer composited by homopolymerizing propylene and has high rigidity and 10 high tensile strength. The component (B) is a resin component having a solubility parameter that is greater than or equal to 7.0 and less than or equal to 9.5. The component (B) has a satisfactory compatibility with the component (A) that has a 15 solubility parameter of approximately 8.0. The polypropylene composition obtained by kneading the components (A) and (B) is in a state in which the component (B) is compatibi1ized inside the component (A) phase or a state in which the component (B) is 20 dispersed into fine particles inside the component (A) phase. Thereby, in a case where a tension test is performed on the polypropylene composition when the component (A) constituting the polypropylene composition is greater than or equal to 82% by mass 25 and the component (B) constituting the polypropylene composition is less than or equal to 18% by mass, the SS curve indicating the correlation between the tensile strength Si and the elongation percentage S2 of the polypropylene composition shows that the 30 tensile strength Si is greater than or equal to 23 MPa at a yield point. Accordingly, the polypropylene composition can attain termite resistance. Further, the polypropylene composition can attain a more satisfactory termite resistance by setting the component (A) to be greater than or equal to 90% by mass and less than 100% by mass and the component (B) to be greater than 0% and less 5 than or equal to 10% by mass under a condition where the tensile strength Si is greater than or equal to 27 MPa and the slope S1/S2 of the tensile strength Si and the elongation percentage S2 is greater than or equal to 2.8 at the yield point. In addition, the 10 polypropylene composition can attain satisfactory outer-damage resistance that is required when the polypropylene composition is formed into a cable.
The tensile strength Si at the yield point is preferably greater than or equal to 27 MPa and less 15 than or equal to 35 MPa. Further, the slope S1/S2 of the tensile strength Si and the elongation percentage S2 at the yield point is preferably greater than or equal to 2.9 and less than or equal to 5.0. With the polypropylene composition having 20 the tensile strength Si and the slope S1/S2 of the tensile strength Si and the elongation percentage S2 in the above-described ranges, the polypropylene composition not only has a high tensile strength but also has an inductile property. Therefore, the 25 polypropylene termite-resistant layer 17b not only has satisfactory termite resistance but is also less susceptible to outer damage when the flame-resistant termite-resistant cable 1 is dragged during extension of the flame-resistant termite-resistant 30 cable 1. Further, the polypropylene termite-resistant layer 17b has satisfactory flame resistance because polypropylene having satisfactory flame resistance is included in the polypropylene termite-resistant layer 17b.
Note that the solubility parameter is calculated by using Fedors method (Polymer Engineering and Science, Vol. 14, page 152). The values described by known references such as " (New) -Basic and Applied- Plastic Compounds, Taisei Inc." may be used in actual practice.
Next, each component is described. 10 15 ο ο 25 3 0
The polypropylene composition includes (A) a polymer resin containing a propylene homopolymer and (B) a resin component having a solubility parameter that is greater than or equal to 7.0 and less than or equal to 9.5. Because this polymer resin has the component (B) contained in the component (A), the moldability and physical properties such as tensile strength and ductility are adjusted according to the purpose for using the polypropylene composition.
The method for mixing the component (A) and the component (B) of the polymer resin is not limited in particular. For example, the mixing method may be a mixing method that includes copolymerization during propylene polymerization or another mixing method of performing melt-kneading. Further, the copolymer may be a random copolymer or a block copolymer. of the
The component (B) is not limited in particular as long as the component (B) is a resin component that has a solubility parameter greater than or equal to 7.0 and less than or equal to 9.5 and has satisfactory compatibility with the component (A) . By using the component (B) , the tensile strength and the ductility polypropylene composition can be adjusted. From the standpoint of adjusting tensile strength and ductility, the component (B) is preferably a resin component having high compatibility with the 5 component (A). That is, the resin component is preferred to have a solubility parameter similar to that of the component (A), the solubility parameter preferably being greater than or equal to 7.5 and less than or equal to 9.0. 10 The component (B) may be, for example, a copolymer of propylene and an a olefin other than propylene, a vinyl-based resin, a diene-based rubber, an ethylene-propylene rubber, an ethylene-propylene-diene rubber (EPDM), and a thermoplastic elastomer. 15 One of or a combination of two kinds of these components may be included in the component (B).
The vinyl-based resin may be, for example: a polyethylene-based resin (e.g., polyethylene, ethylene-a-olefin (carbon number of 3 to 12) 20 copolymer, ethylene-vinyl acetate copolymer); a polypropylene-based resin (e.g., propylene-a-olefin (carbon number of 4 to 12) copolymer); a (META) acrylic-based resin (e.g., (co)-polymer of one or more monomers selected from a group including 25 methacrylic acid, methyl methacrylate, ethyl methacrylate, and 2-ethylhexyl methacrylate); or a styrene-based resin (polystyrene, AS (Acrylonitrile-Styrene) resin, styrene-butadiene resin, styrene-maleic anhydride resin, styrene-acrylic ester resin, 30 or HIPS (High Impact Polystyrene) resin).
The diene-based rubber may be, for example, butadiene rubber, butyl rubber, chloroprene rubber, isoprene rubber, or nitrile rubber (e.g., acrylonitrile-butadiene copolymer).
The thermoplastic elastomer may be, for example, styrene-butadiene rubber (SBR), styrene-butadiene block copolymer (SEBS), styrene-isoprene-styrene block copolymer (SIS), styrene-isoprene rubber (SIR), styrene-ethylene-propylene-styrene block copolymer (SEPS), polystyrene-poly (ethylene/butylene) block copolymer, polystyrene-poly(ethylene/propylene) block copolymer, styrene-ethylene-butylene-ethylene block copolymer, or a hydrogenated derivative of the above.
From the standpoint of the balance between tensile strength and ductility, the polypropylene composition is preferred to have a content in which the component (A) is greater than or equal to 90% by mass and less than 100% by mass and the component (B) is greater than 0% by mass and less than or equal to 10% by mass with respect to the total of the component (A) and the component (B) being 100% by mass. More preferably, the component (A) is greater than or equal to 90% by mass and less than or equal to 95% by mass and the component (B) is greater than 5% by mass and less than or equal to 10% by mass with respect to the total of the component (A) and the component (B) being 100% by mass. With the preferred contents of component (A) and (B), the polypropylene composition can attain higher tensile strength and smaller ductility. (Flame retardant)
The polypropylene composition is preferred to further contain a flame retardant from the standpoint of flame resistance. The flame retardant may be, for example, a flame retardant having a melting peak temperature less than or equal to 230 °C, or a flame retardant having a peak mass loss rate of 1% at a temperature less than or equal to 300 °C. A single kind of flame retardant or two or 5 more kinds of flame retardants may be used. The flame retardant content is preferably greater than or equal to 1% by mass and less than or equal to 10% by mass with respect to the total of (A) the polypropylene polymer and (B) the resin component 10 being 100% by mass. In a case of using two or more kinds of flame retardants, the total of the flame retardants is preferred to be within the abovedescribed range.
Although the flame retardant having a 15 melting peak temperature less than or equal to 230 °C is not limited in particular, the flame retardant may be, for example, tetrabromobisphenol A or its derivative, tris (tribromoneopentyl) phosphate or its derivative, and triallyl 20 isocyanurate-6 bromide or its derivative. The flame retardant may be a single kind of flame retardant or a combination of two or more kinds of flame retardant s.
Although the flame retardant that has a 25 peak mass loss rate of 1% at a temperature less than or equal to 300 °C is not limited in particular, the flame retardant may be, for example: a phosphate mixture or its derivative, in which the phosphate mixture contains 2 kinds of phosphate compounds of 30 phosphoric acid and a triazine derivative or diamine (e.g., linear diamine, diamine containing piperazine or piperazine ring) , each of the 2 kinds of phosphate compounds being greater than or equal to 2014349559 10 Mar 2017 -20- 1% by mass and less than or equal to 99% by mass; a phosphate ester or its derivative; metal hydroxide; melamine sulfate; red phosphorous; and alkoxy imino hindered amine or its derivative. The flame 5 retardant may be a single kind of flame retardant or a combination of two or more kinds of these flame retardants . (Auxiliary flame retardant)
According to necessity, the polypropylene 10 composition may contain an auxiliary flame retardant along with the above-described flame retardant. Although the auxiliary flame retardant is not limited in particular, the auxiliary flame retardant may be, for example, antimony trioxide, zinc borate, 15 polytetrafluoroethylene, silicon dioxide, hydrotalcite, magnesium bicarbonate, zinc oxide, aluminum oxide, magnesium oxide, zirconium oxide, vanadium oxide, molybdenum oxide (and its surfactants), melamine, melamine cyanurate, 20 pentaerythritol, di pentaerythritol, tripentaerythritol, monopentaerythritol, tris (2-hydroxyethyl) isocyanurate, or polytetrafluoroethylene. (Other additives) 25 To the extent of not degrading the effects of embodiments of the present invention, the polypropylene composition may be combined with an additive such as an antioxidant, a lubricant, a crystal nucleating agent, an anti-blocking agent, 30 various stabilizers such as an ultraviolet absorber, an antistatic agent, a coloring agent such as a dye or a pigment, a plasticizer, a crystallization accelerator, a release agent, or a filler. 21
Although the antioxidant is not limited in particular, the antioxidant may be, for example, a phenol-based antioxidant, a phosphorous-based antioxidant, or a thiether-based antioxidant. The 5 antioxidant may be a single kind of antioxidant or a combination of two or more kinds of these antioxidants .
Although the lubricant is not limited in particular, the lubricant may be, for example, a 10 fatty acid amide-based lubricant, a fatty acid ester-based lubricant, a fatty acid-based lubricant, or a fatty acid metal salt-based lubricant. The lubricant may be a single kind of lubricant or a combination of two or more kinds of these lubricants. 15 Although the crystal nucleating agent is not limited in particular, the crystal nucleating agent may be, for example, a sorbitol-based nucleating agent, a phosphorous-based nucleating agent, a rosin-based nucleating agent, or a 20 petroleum resin-based nucleating agent. The crystal nucleating agent may be a single kind of crystal nucleating agent or a combination of two or more kinds of these crystal nucleating agents.
The polypropylene composition is obtained 25 by kneading the above-described components and additives with a Banbury mixer, an extruder, or the like. Taking productivity into consideration, the extruder is preferable because the extruder can perform production continuously. Of the extruders, 30 a twin screw extruder is preferable. When kneading the above-described components and additives, the kneading is preferred to be performed while heating the above-described components and additives at a temperature higher than or equal to the melting point of the polypropylene composition.
[Effects of the invention]
One or more of the following effects can 5 be attained by the embodiments of the present invent ion .
With the flame-resistant termite-resistant cable 1 according to an embodiment of the present invention, the sheath 17 has a surface on which a 10 polypropylene termite-resistant layer 17b formed of a polypropylene composition is provided. The polypropylene composition has a tensile strength Si greater than or equal to 27 MPa at a yield point in a tension test. The polypropylene composition has a 15 slope S1/S2 in which the tensile strength Si and an elongation percentage S2 is greater than or equal to 2.8 at the yield point. Because the polypropylene termite-resistant layer 17b is formed of a polypropylene composition having high tensile 20 strength and low ductility, the flame-resistant termite-resistant cable 1 has satisfactory termite resistance and outer-damage resistance. In addition, the flame-resistant termite-resistant cable 1 has satisfactory flame resistance because the 25 polypropylene termite-resistant layer 17b contains polypropylene having satisfactory flame resistance.
Further, the sheath 17 is preferred to have a double-layer structure in which a polyvinyl chloride layer 17a formed of a polyvinyl chloride 30 composition and the polypropylene termite-resistant layer 17b are layered from an inner side to the surface. Although the polyvinyl chloride layer 17a has satisfactory flame resistance, the polyvinyl -2 3- chloride layer 17a has poor termite resistance. However, by forming the sheath 17 to have the double-layer structure by covering the poor termite-resistance polyvinyl chloride layer 17a with the polypropylene layer 17b, flame resistance can be improved without degrading the termite resistance of the flame-resistant termite-resistant cable 1. 10 15
The polypropylene composition constituting the polypropylene termite-resistant layer 17b preferably contains the component (A) being greater than or equal to 90% by mass and less than 100% by mass and the component (B) being greater than 0% by mass and less than or equal to 10% by mass. More preferably, the polypropylene composition contains the component (A) being greater than or equal to 90% by mass and less than or equal to 95% by mass and the component (B) being greater than or equal to 5% by mass and less than or equal to 10% by mass. Thereby, the polypropylene composition attains greater tensile strength and less ductility. Accordingly, the polypropylene termite-resistant layer 17b formed of these components has satisfactory termite resistance and outer-damage resistance . 25 3 0 e c omposition c onst. itut ing res istant lay er 17b eta rdant havi ng a melting or equal to 23 o °c. , The pr eferably g re ater than le ss than or e qual to 10% e t otal 100% of the one nt (B) by ma s s . More ene compositi on is ' to contain a flame retardant having a peak mass loss rate of 1% at a temperature less than or equal to 300 °C. The flame retardant content is greater than or equal to 1% by mass and less than or equal to 10% 5 by mass with respect to the total 100% of the component (A) and the component (B) by mass.
Thereby, the flame resistance of the flame-resistant termite-resistant cable 1 can be further improved.
Moreover, the polypropylene termite-10 resistant layer 17b of the sheath 17 preferably has a thickness greater than or equal to 0.5 mm and is less than or equal to 50% of a thickness of the polyvinyl chloride layer 17a. Thereby, in addition to achieving balance between termite resistance and 15 outer-damage resistance, the outer-diameter of the flame-resistant termite-resistant cable 1 can be prevented from increasing.
PRACTICAL EXAMPLE 20 Next, a practical example of the present invention is described. In the practical example, a flame-resistant termite-resistant cable was manufactured, and flame-resistance, termite resistance, and outer-damage resistance of the 25 flame-resistant termite-resistant cable were evaluated according to the below-described methods and conditions. The following practical example(s) is merely an illustration of the present invention, and is not intended to limit the scope of the 30 present invention. (1) Materials
In the practical example, a propylene homopolymer was used as the component (A). A resin component containing at least one kind of an ethylene-vinyl acetate copolymer (solubility parameter: 8.96) and a copolymer of propylene and ethylene (solubility parameter: 7.9 to 8.1) was used as the component (B). Further, 2, 2' bis [4-(2, 3- (dibromopropyloxy)-3, 5-dibromophenyl] propane (solubility peak temperature: 90 to 105 °C) was used as the flame retardant having a melting peak temperature less than or equal to 230 °C. Further, a phosphate mixture (peak mass loss rate of 1% at a temperature ranging from 90 to 105 °C) was used as the flame retardant having a peak mass loss rate of 1% at a temperature less than or equal to 300 °C) . Note that the phosphate mixture contains 2 kinds of phosphate compounds of phosphoric acid and a triazine derivative or diamine (e.g., linear diamine diamine containing piperazine or piperazine ring) Each of the 2 kinds of phosphate compounds is greater than or equal to 1% by mass and less than or equal to 99% by mass. (2) Preparation of resin composition for termite-resistant layer
By using the above-described materials, samples 1 to 8 formed of polypropylene compositions were prepared as the resin composition used for the termite-resistant layer. The conditions for preparing samples are shown in the following Table 1 In this practical example, a sample 9 formed of a nylon composition, and samples 10 and 11 formed of PVC compositions were prepared as conventional resin compositions .
[Table 1]
SAMPLE 1 2 3 4 5 6 7 8 9 10 11 POLY PROPYLENE COMPOSmON COMPOSITDN % COMPONENT <A) BY MASS 82 80 98 90 81 92 95 93 NYLON C0MP0- SITDN PVC C0MP0- SITDN PVC C0MP0- SITDN % CO Μ PO NENT 6) BY MASS 18 20 2 10 19 8 5 7 DENSITY <g/cm3) 0.94 1.04 0.93 0.93 1.04 0.93 0.94 0.94 CHARAC-TER 1ST D TENSLE STRENGTH S, MPa) 23.0 19.0 31.0 27.0 22.0 28.0 31.0 30.0 ELONGATDN PERCENTAGE S2 ft) 10.0 5.5 11.0 7.5 4.8 7.2 7.1 6.8 TENSLE STRENGTH S,/ ELONGATDN PERCENTAGE S2 s,/s2 2.3 3.5 2.8 3.6 4.6 3.9 4.4 4.4 EVALUATDN TERM [TERES ISTANCE C FCUM FERENTIAL TERM ΓΤΕ DAMAGE RATE a ft) 4.0 100.0 17.3 24.6 87.8 10.3 11.0 18.2 8.9 16.6 70.5 TERM ΓΤΕ DAMAGE PROGRESS DN DISTANCE b (nm) 1.0 6.0 0.1 0.1 3.0 0.1 0.1 0.1 1.0 3.0 7.0 axb 4.0 600.0 1.7 2.5 263.4 1.0 1.1 1.8 8.9 49.8 493.5 EVALUATDN O X 0 O X O O O CRITERDN X X 27- (3) Evaluation method of resin composition for termite-resistant layer
Specimens were fabricated by using the 5 above-described prepared resin compositions used for the termite-resistant layer. The tensile strength and the termite resistance of the specimens were evaluated. The method for evaluating the tensile strength and the termite resistance is described 10 below, respectively. (Tensile strength)
By performing a tensile test on each of the specimens formed of the propylene compositions shown in Table 1, the slope S1/S2 of the tensile 15 strength Si at the yield point of each of the specimens and the elongation percentage S2 at the yield point of each of the specimens were obtained. More specifically, the tests were performed on the specimens in compliance with the JIS C3005 tensile 20 test method (Test methods for rubber or plastic insulated wires and cables). Thereby, the tensile strength and the ductility at the yield point of each of the specimens was continuously measured until the specimen fractured. According to the 25 results of the tensile tests, the tensile strength Si at the yield point of sample 1 was confirmed to be 23 MPa and the slope S1/S2 of the tensile strength Si at the yield point of sample 1 and the elongation percentage S2 at the yield point of 30 sample 1 was confirmed to be 2.3. The results shown in Table 1 were confirmed by measuring the samples 2 to 8 in a similar manner as sample 1. The correlations between the tensile strength Si and the 28 slope S1/S2 of each of the samples 1 to 8 are shown in Fig. 2. In Fig. 2, the horizontal axis indicates the tensile strength Si (MPa) at the yield point and the vertical axis indicates the slope 5 S1/S2 of the tensile strength Si at the yield point and the elongation percentage S2 at the yield point. (Termite resistance)
The termite resistance of the specimens formed of the polypropylene compositions of samples 10 1 to 8 and the specimens formed of the above described compositions of samples 9 to 11 were evaluated based on the degree of damage that is caused when the specimens are exposed to feeding by termites (termite damage). 15 More specifically, specimens (size: 50 mm X 50 mm, thickness: 1 mm) were fabricated from the compositions of samples 1 to 11. Each specimen was clamped between bait wood for termites and placed in a termite colony for 1 month. The degree of the 20 feeding damage by termites (termite damage) was observed for each specimen placed in the colony. As illustrated in Fig. 3, the length of termite damage (c) (mm units) was measured in a width direction throughout the circumference of the specimen. The 25 termite damage rate (a) (% units) which is the ratio between the total length of the termite damage and the circumferential length of the specimen (= total length of termite damage in width direction/circumferential length 200 mm (50 mm X 4 30 sides)) was measured. Further, the termite damage progression distance (b) (mm units) was measured in a depth direction throughout the circumference of the specimen. The maximum value of the termite damage progression distance and the termite damage rate (a) were multiplied ( (a) X (b) ) . In measuring the length of termite damage (c) in the width direction, the areas of termite damage were 5 identified as follows. As illustrated in Fig. 3, not only the areas subjected to termite damage throughout in the thickness direction of the specimen were identified as the areas of termite damage, but also the areas subjected to termite 10 damage halfway from an upper side or a lower side of the specimen in the thickness direction of the specimen are also identified as the areas of termite damage. In a case where an area subjected to termite damage from the upper side of the specimen 15 and an area subjected to termite damage from the lower side of the specimen overlap at a region of the specimen (hatched portion illustrated in Fig. 3), the length of termite damage (c) at this region of the specimen can be measured by subtracting the 2 0 length of the hat ched portion from the total length of the overlapped areas .
In the practical example, termite resistance was evaluated by using the specimen of sample 9 (nylon 12) as a criterion. By comparing 25 the specimens with the criterion values below, a specimen having an evaluation value ( (a) X (b) ) that is large (satisfactory termite resistance) is judged as "O", and a specimen having an evaluation ((a) X (b)) that is small (poor termite resistance) 30 is judged as "X". The obtained results are shown in Table 1.
Termite resistance of specimen of nylon 12 3 0- (criterion value)
Termite damage rate (a): 8.9%
Termite damage progression distance (maximum value] (b) : 1 mm
Evaluation value ( (a) X (b) ): 8.9 (4) Evaluation results of resin component for termite-resistant layer
It was confirmed that the samples except 10 for samples 2 and 5 have a tensile strength Si greater than or equal to 3.0 MPa at yield point, and that the samples except for samples 2 and 5 have more satisfactory termite resistance compared to the termite resistance of the nylon of sample 9 and the 15 PVC of samples 10 and 11. Thus, it can be understood that termite resistance becomes satisfactory when the component (A) contained in a polypropylene composition is greater than or equal to 82% by mass and the component (B) contained in 20 the polypropylene composition is less than or equal to 18% by mass. As illustrated in Table 1, with the sample 1, the slope S1/S2 of the tensile strength Si and an elongation percentage S2 at the yield point was 2.3, that is, less than 2.8 . On 25 the other hand, with the samples 2 to 8, the slope S1/S2 of the tensile strength Si and an elongation percentage S2 at the yield point was greater than or equal to 2.8. The results of evaluating the outer-damage resistance of a manufactured cable are 30 described in detail below in relation to the above-described evaluation results. (5) Manufacturing of flame-resistant termite-resistant cable 31
Next, flame-resistant termite-resistant cables of practical examples 1, 2 and a flame- resistant termite-resistant cable of a comparative example 1 were manufactured by using the samples 1, 5 4, and 6 including the above-described prepared polypropylene compositions having termite resistance. In this practical example, a flame-resistant termite-resistant cable having the structure illustrated in Fig. 1 was used. 10 First, the internal semiconductor layer 11, the insulation layer 12, the external semiconductor layer 13, the shield layer 14, the pressing tape 15, and the water-shielding layer 16 were formed on the outer periphery of the conductor 10 in this order by 15 using a conventionally known method. Then, the double-layer structure sheath 17 having the polyvinyl chloride layer 17a and the polypropylene termite-resistant layer 17b were layered on the outer periphery of the water-shielding layer 16 by 20 simultaneously forming the polyvinyl chloride composition and the polypropylene composition of sample 4 with a double-layer extrusion-coating process. Thereby, the flame-resistant termite-resistant cable 1 of practical example 1 was 25 manufactured. Further, the flame-resistant termite-resistant cable 1 of practical example 2 was manufactured in a similar manner as the manufacturing of the f1ame-resistant termite-resistant cable 1 of practical example 1 except for 30 changing the kind of polypropylene composition from the polypropylene composition of sample 4 to the polypropylene composition of sample 6. Further, the flame-resistant termite-resistant cable 1 of comparative example 1 was manner as the manufacturin termite-resistant cable 1 except for changing the ki composition from the polyp sample 4 to the polypropyl 1. Note that the thicknes chloride layer 17a was 3.5 polypropylene termite-resi and the outer diameter of termite-resistant cable 1 polyvinyl chloride composi contained 10 polyvinyl chi flame retardant parts by m manufacturing the flame-re cable are shown in Table 2 [Table 2] manufactured in a similar g of the flame-resistant of practical example 1 nd of polypropylene ropylene composition of ene composition of sample s of the polyvinyl mm, the thickness of the stant layer 17b was 1 mm, the flame-resistant was 40 mm. Further, the tion that was used oride parts by mass and 3 ass. The conditions for sistant termite-resistant be1ow. σι
S
CD r+
LT o η a lt CD Hi
3 O
' H
CD CD < <
SD SD I—1 I—' c c
SD SD Γ+ Γ+ Η- H- O 3
3 iQ
O O
Hi SD tr O I—1
C CD Γ+
CD
H
I a
SD 3
SD
iQ
CD SAMPLE COMPARATIVE EXAMPLE 1 PRACTCAL EXAMPLE 1 PRACTCAL EXAMPLE 2 POLY PROPYLENE COMPOSITDN SHEET SAMPLE No. 1 4 6 C0MP0- SITDN % CO Μ PONENT (A) BY MASS 82 90 92 "/«COMPONENT ¢) BY MASS 18 10 8 DENSITY (g/cm3) 0.94 0.93 0.93 CHARAC-TER 1ST IC TENSLE STRENGTH S, (MPa) 23.0 27.0 28.0 ELONGATDN PERCENTAGE S, ft) 10.0 7.5 7.2 TENSLE STRENGTH S,/ ELONGATDN PERCENTAGE S2 s,/s2 2.3 3.6 3.9 FLAME-RESISTANT TERM ITE-RES ISTANT CABLE THCKNESS OF POLYVWYL CHLORDE LAYER film) 3.5 3.5 3.5 THCKNESS OF POLYPROPYLENE TERM ITE-RES ISTANT LAYER film) 1.0 1.0 1.0 OUTER DIAMETER film) 40.0 40.0 40.0 EVALUATDN TERM ITE-RES ISTANCE C FCUM FERENTIAL TERM ΙΓΕ DAMAGE RATE a ft) 4.0 24.6 10.3 TERM ΙΓΕ DAMAGE PROGRESSDN DISTANCE b fnm) 1.0 0.1 0.1 axb 4.0 2.5 1.0 EXTERNAL DAMAGE RESISTANCE (PEELWG A* 500 kg/m) O (NO PEELWG AT 1500 kg/m) O WO PEELWG AT 1500 kg/m) FLAME RESISTANCE O OOMBUSTDN LENGTH 76 cm,AFTERFLAM E TftlE 25 m n.) O OOMBUSTDN LENGTH 76 cm,AFTERFLAME TIM E 2 m n. 30 sec.) O OOMBUSTDN LENGTH 77 cm,AFTERFLAME T IM E 4 m n. 50 sec.) resistance and flame resistance was performed for the manufactured flame-resistant termite-resistant cables of practical examples 1, 2 and comparative example 1, respectively. The method for evaluating 5 each of the outer-damage resistance and the flame resistance is described below. (Outer-damage resistance)
The outer-damage resistance was evaluated by observing the outer damage of the surface of the 10 flame-resistant termite-resistant cable 1 when the flame-resistant termite-resistant cable 1 placed on an test platform simulated as a pipeline is pulled while a load is applied to the flame-resistant termite-resistant cable 1. 15 More specifically, as illustrated in Figs. 4 (a) and 4 (b) , 2 lines of flame-resistant termite- resistant cables 1, which have been heated to approximately 40 °C for 2 hours or more, are placed on a test platform 20 that is simulated as a 20 pipleline and includes a pipeline step part 21. The flame-resistant termite-resistant cable 1 was moved at a rate of 10 m/minute while a load 30 is evenly applied throughout 1.5 m. Then, the state of damage (e.g., peeling) caused on the exterior 25 (polypropylene termite-resistant layer 17b)) of the flame-resistant termite-resistant cable 1 during the movement of the flame-resistant termite-resistant cable 1 over the pipeline step part 21 was verified. In the practical example, the evaluation was 30 performed by changing the load 30 from approximately 900 kg (300 kg/m) to an upper limit of approximately 4500 kg (1500 kg/m). As illustrated in Fig. 5(c), the pipeline step part 21 that was used has a height -35- of 8 mm and includes a corner cross section being chamfered approximately 1 to 2 mm. A satisfactory result is indicated with a "O" when no peeling is confirmed at the upper limit and an unsatisfactory 5 result is indicated with "X" along with the load when peeling is confirmed. (Flame resistance)
Flame resistance was evaluated by performing a flame resistance test IEEE std. 38310 1974 on the flame-resistant termite-resistant cable.
More specifically, cables were laid on a tray and burned from below the tray for 20 minutes with a predetermined burner. The cables were mounted on a vertical ladder-like tray to form a 15 total width of 150 mm at intervals that are 1/2 of the outer diameter of a cable. Then, flame resistance is judged to be satisfactory if the combustion length from an orifice of the burner is less than or equal to 120 cm and the after-flame 20 time is less than or equal to approximately 1 hour. (7) Evaluation result of cable
As illustrated in Table 2, with the flame-resistant termite-resistant cable of comparative example 1, it was confirmed that peeling of the 25 polypropylene termite-resistant layer 17b occurred at 500 kg/m, and that the polypropylene composition of sample 1 has poor outer-damage resistance. This is believed to have occurred because the slope S1/S2 of the tensile strength Si and the elongation 30 percentage S2 at the yield point of the sample 1 is less than 2.8, and the sample 1 has high ductility. On the other hand, with the practical examples 1 and 2, it was confirmed that no peeling of the ' ό'Ο' polypropylene termite-resistant layer 17b occurred at 1500 kg/m, and that the samples 4 and 6 have satisfactory outer-damage resistance. This is believed to have occurred because the slope S1/S2 of 5 the tensile strength Si and the elongation percentage S2 at the yield point of each of the samples 4 and 6 is greater than or equal to 2.8, and each of the samples 4 and 6 has small ductility.
Further, it was confirmed that all of the 10 flame-resistant termite-resistant cables have satisfactory flame resistance.
It was confirmed that a cable not only can attain satisfactory termite resistance and flame resistance but also satisfactory outer-damage 15 resistance when the cable is manufactured at the area indicated with arrows in Fig. 2, that is, when the tensile strength Si is greater than or equal to 27 MPa at the yield point and the slope S1/S2 of the tensile strength Si and the elongation percentage S2 20 is greater than or equal to 2.8 at the yield point.
Similar to the samples 4 and 6, the samples 3, 7, and 8 have a tensile strength Si greater than or equal to 27 MPa at the yield point and the slope S1/S2 greater than or equal to 2.8 at 25 the yield point. Thus, the samples 3, 7, and 8 were confirmed to have satisfactory, termite resistance, flame resistance, and outer-damage resistance. On the other hand, the samples 2 and 5 each have slopes S1/S2 greater than or equal to 2.8 and low ductility 30 Thus, the samples 2 and 5 were confirmed to have satisfactory outer-damage resistance but poor termite resistance due to the tensile strength Si being less than 23 MPa. 2014349559 10 Mar 2017
Hence, a flame-resistant termite-resistant cable having satisfactory termite resistance, outer-damage resistance, and flame resistance can be obtained by forming a polypropylene termite-5 resistant layer by using a polypropylene composition having high tensile strength and elongation percentage .
While various embodiments of the present invention have been described above, it should be 10 understood that they have been presented by way of example only, and not by way of limitation. It will be apparent to a person skilled in the relevant art that various changes in form and detail can be made therein without departing from the spirit and scope 15 of the invention. Thus, the present invention should not be limited by any of the above described exemplary embodiments.
Throughout this specification and the claims which follow, unless the context requires otherwise, 20 the word "comprise", and variations such as "comprises" and "comprising", will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps. 25 The reference in this specification to any prior publication (or information derived from it), or to any matter which is known, is not, and should not be taken as an acknowledgment or admission or any form of suggestion that that prior publication (or information 30 derived from it) or known matter forms part of the common general knowledge in the field of endeavour to which this specification relates. 2014349559 10 Mar 2017 10
EXPLANATION OF REFERENCE NUMERALS I flame-resistant termite-resistant cable 10 conductor II internal semiconductor layer 12 insulation layer 13 external semiconductor layer 14 shield layer 15 pressing tape 16 water-shielding layer 17 sheath 17a polyvinyl chloride 17b polypropylene termite-resistant layer
Claims (7)
1. A flame-resistant termite-resistant cable including a sheath, the flame-resistant termite-resistant cable comprising: the sheath having a surface on which a polypropylene termite-resistant layer including a polypropylene composition is provided; wherein the polypropylene composition contains (A) a propylene homopolymer and (B) a resin component having a solubility parameter greater than or equal to 7.0 and less than or equal to 9.5, a tensile strength Si of the polypropylene composition being greater than or equal to 27 MPa at a yield point in a tension test, and a slope S1/S2 of the tensile strength Si and an elongation percentage S2 of the polypropylene composition being greater than or equal to 2.8 at the yield point.
2. The f1ame-resistant termite-resistant cable as claimed in claim 1, wherein the polypropylene composition contains (A) the propylene homopolymer being greater than or equal to 90% by mass and less than 100% by mass and (B) the resin component being greater than 0% by mass and less than or equal to 10% by mass with respect to the total of (A) the propylene homopolymer and (B) the resin component being 100% by mass.
3. The f1ame-resistant termite-resistant cable as claimed in claim 1 or claim 2, wherein (B) the resin component includes one of or a combination of two kinds of a copolymer of propylene and an a olefin other than propylene, a vinyl resin, a diene rubber, an ethylene-propylene rubber, an ethylene-propylene-diene rubber, and a thermoplastic elastomer .
4. The f1ame-resistant termite-resistant cable as claimed in one of claims 1 to 3, wherein the polypropylene composition further contains a flame retardant having a melting peak temperature less than or equal to 230 °C, the flame retardant content is greater than or equal to 1% by mass and less than or equal to 10% by mass with respect to the total of (A) the propylene homopolymer and (B) the resin component being 100% by mass.
5. The f1ame-resistant termite-resistant cable as claimed in one of claims 1 to 3, wherein the polypropylene composition further contains a flame retardant having a peak mass loss rate of 1% at a temperature less than or equal to 300 °C, the flame retardant content is greater than or equal to 1% by mass and less than or equal to 10% by mass with respect to the total of (A) the propylene homopolymer and (B) the resin component 100% by mass.
6. The f1ame-resistant termite-resistant cable as claimed in one of claims 1 to 5, wherein the sheath includes a double-layer structure in which a polyvinyl chloride layer formed of a polyvinyl chloride composition and the polypropylene termite-resistant layer are layered from an inner side to the surface.
7. The f1ame-resistant termite-resistant cable as claimed in claim 6, wherein the polypropylene termite-resistant layer has a thickness greater than or equal to 0.5 mm and is less than or equal to 50% of a thickness of the polyvinyl chloride layer.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013237215A JP5808023B2 (en) | 2013-11-15 | 2013-11-15 | Flame retardant ant cable |
| JP2013-237215 | 2013-11-15 | ||
| PCT/JP2014/080149 WO2015072535A1 (en) | 2013-11-15 | 2014-11-14 | Flame-resistant, termite-repellent cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2014349559A1 AU2014349559A1 (en) | 2016-05-05 |
| AU2014349559B2 true AU2014349559B2 (en) | 2017-04-20 |
Family
ID=53057469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2014349559A Active AU2014349559B2 (en) | 2013-11-15 | 2014-11-14 | Flame-resistant, termite-repellent cable |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP5808023B2 (en) |
| CN (1) | CN105745723B (en) |
| AU (1) | AU2014349559B2 (en) |
| MY (1) | MY182236A (en) |
| SG (1) | SG11201602802TA (en) |
| WO (1) | WO2015072535A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374459A (en) * | 2015-11-23 | 2016-03-02 | 浙江昌泰电力电缆有限公司 | Non-toxic harmless and pollution-free power cable with long control period for preventing termites |
| JP6734243B2 (en) * | 2017-10-06 | 2020-08-05 | 古河電気工業株式会社 | Flame-retardant ant composition, power cable and method for producing the same |
| WO2020202516A1 (en) * | 2019-04-03 | 2020-10-08 | 古河電気工業株式会社 | Flame retardant anti-termite resin composition, power cable and method for producing same |
| CN113597445A (en) * | 2019-04-03 | 2021-11-02 | 古河电气工业株式会社 | Flame-retardant termite-resistant resin composition, power cable, and method for producing and laying same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48103132A (en) * | 1972-04-10 | 1973-12-25 | ||
| JPS5918738A (en) * | 1982-07-23 | 1984-01-31 | Tokuyama Soda Co Ltd | Composite resin composition |
| JP2012174574A (en) * | 2011-02-23 | 2012-09-10 | Kansai Electric Power Co Inc:The | Flame-retardant termite-prevention cable |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62103132A (en) * | 1986-05-20 | 1987-05-13 | Nichias Corp | Manufacture of joint sheet |
| JPH0290413A (en) * | 1988-09-28 | 1990-03-29 | Fujikura Ltd | Ant-proofing electric cable |
| JP5144007B2 (en) * | 2004-12-22 | 2013-02-13 | 古河電気工業株式会社 | Flame retardant resin composition and molded article using the same |
| CN101379096B (en) * | 2006-02-03 | 2012-11-21 | 胜亚诺盟股份有限公司 | Modified polypropylene polymer and composition comprising the polymer |
| US8206825B2 (en) * | 2008-01-03 | 2012-06-26 | Equistar Chemicals, Lp | Preparation of wires and cables |
| US20100012373A1 (en) * | 2008-07-16 | 2010-01-21 | Sabic Innovative Plastics, Ip B.V. | Poly(arylene ether) composition and a covered conductor with thin wall and small size conductor |
| JP5436994B2 (en) * | 2009-09-11 | 2014-03-05 | 古河電気工業株式会社 | Flame retardant resin composition and molded article using the same |
| JP5588660B2 (en) * | 2009-11-24 | 2014-09-10 | 矢崎総業株式会社 | Flame retardant resin composition |
| JP5526951B2 (en) * | 2010-04-05 | 2014-06-18 | 株式会社オートネットワーク技術研究所 | Wire covering material composition, insulated wire and wire harness |
| JP5549675B2 (en) * | 2010-04-16 | 2014-07-16 | 住友電気工業株式会社 | Non-halogen flame retardant resin composition and electric wire and cable using the same |
| JP5684087B2 (en) * | 2010-10-19 | 2015-03-11 | 古河電気工業株式会社 | Flame retardant resin composition and molded article using the same |
-
2013
- 2013-11-15 JP JP2013237215A patent/JP5808023B2/en active Active
-
2014
- 2014-11-14 CN CN201480062373.XA patent/CN105745723B/en active Active
- 2014-11-14 SG SG11201602802TA patent/SG11201602802TA/en unknown
- 2014-11-14 AU AU2014349559A patent/AU2014349559B2/en active Active
- 2014-11-14 MY MYPI2016000898A patent/MY182236A/en unknown
- 2014-11-14 WO PCT/JP2014/080149 patent/WO2015072535A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48103132A (en) * | 1972-04-10 | 1973-12-25 | ||
| JPS5918738A (en) * | 1982-07-23 | 1984-01-31 | Tokuyama Soda Co Ltd | Composite resin composition |
| JP2012174574A (en) * | 2011-02-23 | 2012-09-10 | Kansai Electric Power Co Inc:The | Flame-retardant termite-prevention cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105745723A (en) | 2016-07-06 |
| MY182236A (en) | 2021-01-18 |
| SG11201602802TA (en) | 2016-05-30 |
| JP2015097175A (en) | 2015-05-21 |
| WO2015072535A1 (en) | 2015-05-21 |
| JP5808023B2 (en) | 2015-11-10 |
| AU2014349559A1 (en) | 2016-05-05 |
| CN105745723B (en) | 2018-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9805840B2 (en) | Halogen-free crosslinked resin composition and insulated wire and cable using the same | |
| AU2014349559B2 (en) | Flame-resistant, termite-repellent cable | |
| KR101625034B1 (en) | Charging cable for electronic vehicle and manufacturing method thereof | |
| US20070272426A1 (en) | Impact Resistant Cable | |
| US11257607B2 (en) | Electric cable with improved temperature ageing resistance | |
| JP2013177610A (en) | Non-halogen flame-retardant resin composition, and non-halogen flame-retardant electric wire and cable | |
| US20140141240A1 (en) | Halogen-free resin composition, electric wire and cable | |
| US11069460B1 (en) | Fire resistant cable with dual insulation layer arrangement | |
| US20140017494A1 (en) | Insulations containing non-migrating antistatic agent | |
| JP5788165B2 (en) | Flame retardant resin film and method for producing the film | |
| US20100300727A1 (en) | Cable Comprising Bedding with Reduced Amount of Volatile Compounds | |
| WO2013108329A1 (en) | Flame-retardant electric wire/cable | |
| US9640301B2 (en) | Electric wire and cable | |
| US9812232B2 (en) | Electric wire and cable | |
| US9984792B2 (en) | Electric wire and cable | |
| US10465118B2 (en) | Fire retardant cables formed from halogen-free and heavy metal-free compositions | |
| JP2012124061A (en) | Flame retardant wire/cable | |
| US9991027B2 (en) | Electric wire and cable | |
| KR102234147B1 (en) | Resin composition for cable sheath and cable including the same | |
| JP2016189270A (en) | Flame-retardant termite-prevention cable | |
| JP2017191657A (en) | LAN cable | |
| EP3395881B1 (en) | Halogen- and phosphorus-free flame-retardant resin composition, and electric wire and cable using the same | |
| JPH11339563A (en) | Flame retardant wire and cable | |
| JP2005044596A (en) | Nonphosphate high-flame-resistance high-strength nonhalogen insulated wire | |
| CN116364339A (en) | Flame retardant cable with self-extinguishing layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) |