CN117986763A - Weather-resistant cold-resistant flame-retardant PVC sheath material composition and preparation method thereof - Google Patents
Weather-resistant cold-resistant flame-retardant PVC sheath material composition and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 75
- 239000000203 mixture Substances 0.000 title claims abstract description 32
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000003063 flame retardant Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000004014 plasticizer Substances 0.000 claims abstract description 22
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 11
- -1 polyethylene Polymers 0.000 claims abstract description 9
- 239000004698 Polyethylene Substances 0.000 claims abstract description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 8
- 239000006229 carbon black Substances 0.000 claims abstract description 8
- 229920000573 polyethylene Polymers 0.000 claims abstract description 8
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 6
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 6
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 4
- 239000000314 lubricant Substances 0.000 claims abstract description 3
- 239000004808 2-ethylhexylester Substances 0.000 claims abstract 4
- KRADHMIOFJQKEZ-UHFFFAOYSA-N Tri-2-ethylhexyl trimellitate Chemical compound CCCCC(CC)COC(=O)C1=CC=C(C(=O)OCC(CC)CCCC)C(C(=O)OCC(CC)CCCC)=C1 KRADHMIOFJQKEZ-UHFFFAOYSA-N 0.000 claims abstract 4
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 11
- ZQYCVIGMGPFQQS-UHFFFAOYSA-N [3-pentanoyloxy-2,2-bis(pentanoyloxymethyl)propyl] pentanoate Chemical compound CCCCC(=O)OCC(COC(=O)CCCC)(COC(=O)CCCC)COC(=O)CCCC ZQYCVIGMGPFQQS-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 9
- JNXDCMUUZNIWPQ-UHFFFAOYSA-N trioctyl benzene-1,2,4-tricarboxylate Chemical compound CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C(C(=O)OCCCCCCCC)=C1 JNXDCMUUZNIWPQ-UHFFFAOYSA-N 0.000 claims description 9
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 claims description 8
- 239000000779 smoke Substances 0.000 claims description 8
- 238000009775 high-speed stirring Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000006116 polymerization reaction Methods 0.000 claims description 7
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 5
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 239000011343 solid material Substances 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000012964 benzotriazole Substances 0.000 claims description 2
- 125000003354 benzotriazolyl group Chemical group N1N=NC2=C1C=CC=C2* 0.000 claims description 2
- 239000004611 light stabiliser Substances 0.000 claims description 2
- 229920013716 polyethylene resin Polymers 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 abstract description 33
- 229920000915 polyvinyl chloride Polymers 0.000 abstract description 33
- 230000000694 effects Effects 0.000 abstract description 10
- 230000002195 synergetic effect Effects 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 5
- 239000003381 stabilizer Substances 0.000 abstract description 4
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 abstract description 3
- 125000001931 aliphatic group Chemical group 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 10
- 239000003822 epoxy resin Substances 0.000 description 6
- 229920000647 polyepoxide Polymers 0.000 description 6
- 238000009472 formulation Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 239000001993 wax Substances 0.000 description 4
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- 150000001875 compounds Chemical class 0.000 description 3
- 229910021389 graphene Inorganic materials 0.000 description 3
- UWNADWZGEHDQAB-UHFFFAOYSA-N 2,5-dimethylhexane Chemical group CC(C)CCC(C)C UWNADWZGEHDQAB-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 239000002216 antistatic agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- OCWYEMOEOGEQAN-UHFFFAOYSA-N bumetrizole Chemical compound CC(C)(C)C1=CC(C)=CC(N2N=C3C=C(Cl)C=CC3=N2)=C1O OCWYEMOEOGEQAN-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- OCWMFVJKFWXKNZ-UHFFFAOYSA-L lead(2+);oxygen(2-);sulfate Chemical compound [O-2].[O-2].[O-2].[Pb+2].[Pb+2].[Pb+2].[Pb+2].[O-]S([O-])(=O)=O OCWMFVJKFWXKNZ-UHFFFAOYSA-L 0.000 description 2
- UMKARVFXJJITLN-UHFFFAOYSA-N lead;phosphorous acid Chemical compound [Pb].OP(O)O UMKARVFXJJITLN-UHFFFAOYSA-N 0.000 description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 2
- 239000000347 magnesium hydroxide Substances 0.000 description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 235000019198 oils Nutrition 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 2
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 description 1
- 239000004114 Ammonium polyphosphate Substances 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- PZBFGYYEXUXCOF-UHFFFAOYSA-N TCEP Chemical compound OC(=O)CCP(CCC(O)=O)CCC(O)=O PZBFGYYEXUXCOF-UHFFFAOYSA-N 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 235000019826 ammonium polyphosphate Nutrition 0.000 description 1
- 229920001276 ammonium polyphosphate Polymers 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- WHHGLZMJPXIBIX-UHFFFAOYSA-N decabromodiphenyl ether Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br WHHGLZMJPXIBIX-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- PZTAGFCBNDBBFZ-UHFFFAOYSA-N tert-butyl 2-(hydroxymethyl)piperidine-1-carboxylate Chemical compound CC(C)(C)OC(=O)N1CCCCC1CO PZTAGFCBNDBBFZ-UHFFFAOYSA-N 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 239000001038 titanium pigment Substances 0.000 description 1
- HQUQLFOMPYWACS-UHFFFAOYSA-N tris(2-chloroethyl) phosphate Chemical compound ClCCOP(=O)(OCCCl)OCCCl HQUQLFOMPYWACS-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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
- Insulated Conductors (AREA)
Abstract
The invention relates to the technical field of PVC sheath materials, in particular to a weather-resistant cold-resistant flame-retardant PVC sheath material composition and a preparation method thereof. The material comprises the following raw materials in parts by mass: 100 parts of polyvinyl chloride resin; 5-9 parts of composite calcium-zinc stabilizer; 47-59 parts of composite plasticizer; 0.25 to 0.55 portion of antioxidant; 0.05 to 0.15 portion of ultraviolet absorber; 21-29 parts of composite flame retardant; 0.3 to 0.7 portion of polyethylene wax; 0.3 to 0.7 portion of lubricant; 11-15 parts of calcium carbonate; 1-3 parts of carbon black. The composite plasticizer is a mixture of DOA, TOTM and PTL; the plasticizer PTL used in the invention is an aliphatic plasticizer, has high plasticizing efficiency, high processing speed, low volatility and mobility and excellent ultraviolet stability, has a good synergistic plasticizing effect with DOA and TOTM, and effectively improves the cold resistance and weather resistance of the sheath material.
Description
Technical Field
The invention relates to the technical field of PVC sheath materials, in particular to a weather-resistant cold-resistant flame-retardant PVC sheath material composition and a preparation method thereof.
Background
Vinyl chloride is a high polymer material with excellent mechanical property and electrical insulation, particularly has flame resistance and self-extinguishing property, so that the polyvinyl chloride is widely applied to the production of cable materials, plays an important role in the insulation protection materials of wires and cables for a long time, and is widely applied to various wire and cable insulation and protection layer materials. However, with rapid development of national economy, the cable is widely applied to various power stations, wind motors, charging piles, subway stations, power plants, high-rise buildings, military facilities, oil platforms, submarine cables and other fields, and the use environment of the cable is complex, so that the requirements on the quality and the functions of the cable are also higher and higher. Many electric wires and cables are used outdoors and are subjected to severe weather such as wind, sun, cold and the like, so that the sheath material of the cable is required to be weather-resistant, cold-resistant, water-resistant, acid-base-resistant, oil-resistant and the like. At present, the current cable sheath material is difficult to satisfy the operation requirement in some fields in the aspect of weather resistance, and in the use, because the environment that the cable suffered is complicated, the cable surface is easy ageing and wearing and tearing, and after the cable ageing and wearing and tearing, its inside structural layer even conductor exposes outside easily, has the potential safety hazard, very easily causes the electric shock.
The invention discloses a cold-resistant flame-retardant antistatic polyvinyl chloride sheath material for a coal mine cable, which is characterized by comprising the following raw materials: polyvinyl chloride resin SG3, tri (2-chloroethyl) phosphate, antistatic agent, dioctyl sebacate, dioctyl phthalate, tricresyl phosphate, antimonous oxide, zinc borate, tribasic lead sulfate, dibasic lead phosphite, light calcium carbonate, bisphenol A, 2-mercaptobenzimidazole, vinyl tri (beta-methoxyethoxy) silane, accelerator TMTD and modified asbestos powder; the polyvinyl chloride sheath cable material has the characteristics of low surface resistance and high antistatic performance, and the composite high-concentration antistatic agent consisting of TCEP and quaternary ammonium salt cationic surfactant and nonionic surfactant is used together, so that a good antistatic synergistic effect can be achieved, the surface resistance is less than or equal to 108 omega, and the polyvinyl chloride sheath cable material has good antistatic performance.
The invention discloses a cold-resistant PVC sheath material for cables and a preparation method thereof, wherein the cold-resistant PVC sheath material is prepared from the following raw materials in parts by weight: 75-95 parts of SG-4 type polyvinyl chloride, 10-15 parts of chloroprene rubber, 10-15 parts of epoxy tetrahydrodioctyl phthalate, 5-10 parts of diisobutyl nylon acid, 4-7 parts of ACR, 2-3 parts of ethylene bis-hard amide, 8-12 parts of dipropylene glycol dibenzoate, 264-1.5 parts of antioxidant, 10-15 parts of decabromodiphenyl ether, 5-10 parts of ammonium polyphosphate, 1-2 parts of dibasic lead phosphite, 1-2 parts of tribasic lead sulfate, 2-3 parts of barium stearate, 4-8 parts of epoxy soybean oil, 20-30 parts of acetylene black, 3-6 parts of titanium pigment, 5-10 parts of calcined loess, 10-15 parts of active calcium carbonate and 4-6 parts of composite filler. The sheath material of the invention has high cold resistance, the low-temperature impact catalysis temperature can reach 50 ℃ below zero, and excellent tensile strength, impact resistance, wear resistance, ageing resistance and the like can be maintained under the low-temperature condition.
Chinese patent CN104861385A is a flame-retardant insulating polyvinyl chloride cable material sheath material, which relates to the technical field of cable processing and is prepared from the following raw materials in parts by weight: 80-90 parts of PVC, 50-60 parts of butyl rubber, 30-40 parts of pentaerythritol, 5-15 parts of trioctyl trimellitate, 10-20 parts of chlorinated paraffin, 3-5 parts of antioxidant and 12-14 parts of calcium carbonate. The beneficial effects of the invention are as follows: the process flow is brief, the raw materials are reasonably proportioned, reasonable raw materials are provided for the production of the cable sheath material, the cable sheath material has the advantages of strong flame retardant property and high insulating strength, the use effect is better, and the quality of the cable product is ensured.
The invention provides a weather-resistant polyvinyl chloride cable sheath material for outdoor use and a preparation method thereof, wherein the sheath material is prepared from the following raw materials in parts by weight: 30-50 parts of polyvinyl chloride, 30-50 parts of epoxy resin, 1-3 parts of polyethylene wax, 10-20 parts of graphene oxide, 1-3 parts of antimony trioxide, 20-40 parts of plasticizer, 10-15 parts of stabilizer and 1-5 parts of triphenylphosphine. Wherein the epoxy resin is bisphenol A type epoxy resin; the weight ratio of the epoxy resin to the polyvinyl chloride is 1:1. According to the invention, the graphene and the epoxy resin are simultaneously introduced into the polyvinyl chloride cable material, and the epoxy resin and the graphene oxide are combined through chemical bonds and then mixed with the polyvinyl chloride cable material, so that the mixing uniformity of all raw materials of the sheath material is fully ensured, and the mechanical property and weather resistance of the polyvinyl chloride cable sheath material are effectively improved.
The cable sheath material related to the four patents has single or double combination properties in aspects of cold resistance, flame retardance, weather resistance and the like, and none of the cable sheath materials has limitations in cold resistance, flame retardance and weather resistance.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a weather-resistant cold-resistant flame-retardant PVC sheath material composition which has excellent performances of cold resistance, flame retardance, weather resistance and the like; the invention also provides a preparation method thereof, which is scientific, reasonable, simple and easy to implement.
A weather-resistant cold-resistant flame-retardant PVC sheath material composition comprises the following raw materials in parts by mass:
Wherein:
the composite plasticizer is a mixture of dioctyl adipate DOA, trioctyl trimellitate TOTM and pentaerythritol tetravalerate PTL.
The mixing mass ratio of the dioctyl adipate DOA, the trioctyl trimellitate TOTM and the pentaerythritol tetravalerate PTL is (28-32): (13-17): (6-10), preferably (29-31): (14-16): (7-9).
The polyethylene resin is PVC resin with the average polymerization degree of 1700-2000, preferably S-80 resin with the average polymerization degree of 1700 of Taiwan plastic industry (Ningbo) Co.
The compound calcium zinc stabilizer is preferably RUP-127 compound calcium zinc stabilizer of Japanese Ai Dike, and the preferable dosage is 6-8 parts.
The antioxidant is a mixture of antioxidant 1010 and antioxidant 168.
The antioxidant 1010 is tetra [ methyl-beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) acrylate ] pentaerythritol ester, the antioxidant is 168 tri (2, 4-di-tert-butylphenyl) phosphite, and the mixing mass ratio of the antioxidant 1010 to the antioxidant 168 is (0.15-0.35): 0.1-0.2, preferably (0.2-0.3): 0.1-0.2.
The ultraviolet absorber is benzotriazole light stabilizer, preferably ultraviolet absorber UV-326, namely 2- (2 ' -hydroxy-3 ' -tertiary butyl-5 ' -methylphenyl) -5-chlorobenzotriazole, and the preferable dosage is 0.08-0.12 part.
The composite flame retardant is a mixture of aluminum hydroxide and antimony trioxide.
The mixing mass ratio of the aluminum hydroxide to the antimonous oxide is (16-20): 5-9, preferably (17-19): 6-8.
The lubricant is polyethylene wax and polyethylene oligomer with average molecular weight of 4000-6000.
The calcium carbonate is active nano calcium carbonate, and the preferable dosage is 12-14 parts.
The carbon black is carbon black of a furnace smoke method, and the preferable dosage is 1-3 parts.
A preparation method of a weather-resistant cold-resistant flame-retardant PVC sheath material composition comprises the following steps:
(1) Weighing raw materials according to a formula, pouring the weighed solid materials into a high-speed mixer, and stirring at a high speed;
(2) When the material temperature reaches 75-80 ℃, stirring at a low speed, adding the weighed composite plasticizer, mixing at a low speed for 1-2 minutes, and then regulating to high-speed stirring;
(3) Through observation, the plasticizer is completely absorbed, the materials are discharged into a low-speed mixer after being loosened, stirring and cooling are started, the materials are discharged after being cooled, and the mixed materials are granulated in a double-screw extruder;
Wherein:
The high-speed stirring rotating speed is 1000-1400 rpm;
The low-speed stirring rotating speed is 700-999 revolutions per minute;
The temperature of the material in the step (3) is 45-55 ℃;
parameters of the twin-screw extruder described in step (3) were set as follows:
1-3 regions: 100-140 ℃,
4-7 Regions: 150-170 ℃,
Machine head: 163-167 deg.c.
Compared with the prior art, the invention has the following beneficial effects:
(1) The plasticizer Pentaerythritol Tetravalerate (PTL) used in the invention is an aliphatic plasticizer, has high plasticizing efficiency, high processing speed, low volatility and mobility and excellent ultraviolet stability, and has good synergistic plasticizing effect with dioctyl adipate (DOA) and trioctyl trimellitate (TOTM), thereby effectively improving the cold resistance and weather resistance of the sheath material.
(2) The aluminum hydroxide used in the invention has the effects of flame retardance, smoke abatement, filling and the like, has excellent dispersion performance, has good synergistic flame retardance with the antimonous oxide, and effectively improves the flame retardance and smoke abatement of the sheath material by adding the aluminum hydroxide.
(3) The carbon black by the furnace smoke method has fine particles and good dispersion performance, and can effectively improve the surface smoothness of the sheath material.
Detailed Description
The present invention is further illustrated by the following examples, but the scope of the present invention is not limited thereto.
The polyvinyl chloride resins used in examples and comparative examples were S-80 resin, S-70 resin, S-85 resin, available from Ningbo Co., ltd. The polyethylene wax is CH-4A type polyethylene wax, and is purchased from Shanghai Hua Yi plastic auxiliary agent factories.
All materials used in the examples are commercially available, except as specified.
Table 1 examples 1-5 formulation components (in parts by weight) of weather-resistant Cold-resistant flame retardant PVC Cable sheath materials
Comparative examples 1 to 7 are comparative formulations, and the component ratios of the comparative formulations are shown in table 2.
Table 2 comparative examples 1 to 7 formulation components (in parts by weight) of weather-resistant cold-resistant flame-retardant PVC cable sheathing compound
The method comprises the steps of weighing the materials according to a formula, pouring the weighed solid materials into a high-speed mixer, starting high-speed stirring, adjusting to low speed when the temperature of the materials reaches about 80 ℃, adding the weighed composite plasticizer through a plasticizer feeding port, adjusting to high speed stirring after mixing at low speed for 1-2 minutes, continuing mixing for 4-6 minutes, discharging the materials into the low-speed mixer after observing that the plasticizer is completely absorbed and the materials are loose, starting stirring and cooling, and discharging the materials when the temperature of the materials is reduced to about 50 ℃, wherein the speed of high-speed stirring is 1300 revolutions, and the speed of low-speed stirring is 700 revolutions.
The mixed materials were pelletized in a twin screw extruder with the pelleting parameters set forth in table 3. And preparing the prepared PVC cable sheath material into corresponding patterns for performance test.
Table 3 granulator parameter settings
The results of performance tests of examples and comparative examples of the PVC cable sheathing composition are shown in tables 4 and 5.
Table 4 PVC comparative performance of cable sheathing compositions examples 1 to 5
Table 5 PVC comparative cable jacket material compositions examples 1-7 performance comparisons
From the examples and comparative examples, example 3 is the best formulation; as can be seen from comparative examples 3-5, the cold-resistant and weather-resistant properties of the three plasticizers of the two-by-two combined cable sheath material are obviously inferior to those of the three plasticizers, and the application effect is better at the same time, and the three plasticizers are matched according to a certain proportion so that the cold-resistant and weather-resistant properties of the PVC cable sheath material achieve excellent effects; the plasticizer Pentaerythritol Tetravalerate (PTL) is an aliphatic plasticizer, has high plasticizing efficiency, high processing speed, low volatility and mobility and excellent ultraviolet stability, has a good synergistic plasticizing effect with the other two plasticizers, and effectively improves the cold resistance and weather resistance of the sheath material; the weather-resistant and cold-resistant performances of the sheath material prepared by the S-70 with the average polymerization degree of 1300 are not as good as those of the cable sheath material prepared by the S-80 resin with the average polymerization degree of 1700, and the weather-resistant and cold-resistant performances of the cable sheath material prepared by the S-85 resin with the average polymerization degree of 2500 are better, but the processing performance is poor due to the high polymerization degree; the aluminum hydroxide has the effects of flame retardance, smoke abatement, filling and the like, has excellent dispersion performance, has good synergistic flame retardance with the antimonous oxide, and effectively improves the flame retardance and smoke abatement of the sheath material by adding the aluminum hydroxide; the dispersion performance of the magnesium hydroxide is poor, and the synergistic flame retardant effect of the aluminum hydroxide and the antimonous oxide is better than that of the magnesium hydroxide; compared with common carbon black, the carbon black prepared by the furnace smoke method has fine particles and good dispersing effect, and can effectively improve the surface finish of the sheath material.
Claims (10)
1. The weather-resistant cold-resistant flame-retardant PVC sheath material composition is characterized by comprising the following raw materials in parts by mass:
Wherein:
The composite plasticizer is a mixture of dioctyl adipate DOA, trioctyl trimellitate TOTM and pentaerythritol tetravalerate PTL;
the mixing mass ratio of the dioctyl adipate DOA to the trioctyl trimellitate TOTM to the pentaerythritol tetravalerate PTL is (28-32): (13-17): (6-10).
2. The weather-resistant cold-resistant flame-retardant PVC sheath material composition according to claim 1, wherein the polyethylene resin is PVC resin with an average polymerization degree of 1700-2000.
3. The weather-resistant cold-resistant flame-retardant PVC sheath material composition according to claim 1, wherein the antioxidant is a mixture of antioxidant 1010 and antioxidant 168.
4. The weather-resistant cold-resistant flame-retardant PVC sheath material composition according to claim 3, wherein the mixing mass ratio of the antioxidant 1010 to the antioxidant 168 is (0.15-0.35) (0.1-0.2).
5. The weather-resistant cold-resistant flame-retardant PVC sheath material composition according to claim 1, wherein the ultraviolet absorber is benzotriazole light stabilizer.
6. The weather-resistant cold-resistant flame-retardant PVC sheath material composition according to claim 1, wherein the composite flame retardant is a mixture of aluminum hydroxide and antimony trioxide, and the mixing mass ratio of the aluminum hydroxide to the antimony trioxide is (16-20) (5-9).
7. The weather-resistant cold-resistant flame-retardant PVC sheath material composition according to claim 1, wherein the lubricant is polyethylene wax and polyethylene oligomer with an average molecular weight of 4000-6000.
8. The weather-resistant cold-resistant flame-retardant PVC sheath material composition according to claim 1, wherein the calcium carbonate is active nano calcium carbonate.
9. The weather-resistant cold-resistant flame-retardant PVC sheath material composition according to claim 1, wherein the carbon black is a furnace smoke method carbon black.
10. A method for preparing the weather-resistant cold-resistant flame-retardant PVC jacket composition according to any one of claims 1 to 9, comprising the steps of:
(1) Weighing raw materials according to a formula, pouring the weighed solid materials into a high-speed mixer, and stirring at a high speed;
(2) When the material temperature reaches 75-80 ℃, stirring at a low speed, adding the weighed composite plasticizer, mixing at a low speed for 1-2 minutes, and then regulating to high-speed stirring;
(3) Through observation, the plasticizer is completely absorbed, the materials are discharged into a low-speed mixer after being loosened, stirring and cooling are started, the materials are discharged after being cooled, and the mixed materials are granulated in a double-screw extruder;
Wherein:
The high-speed stirring rotating speed is 1000-1400 rpm;
The low-speed stirring rotating speed is 700-999 revolutions per minute;
The temperature of the material in the step (3) is 45-55 ℃;
parameters of the twin-screw extruder described in step (3) were set as follows:
1-3 regions: 100-140 ℃,
4-7 Regions: 150-170 ℃,
Machine head: 163-167 deg.c.
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