CN108707286A - A kind of weather-proof polyolefin pipe and preparation method thereof - Google Patents
A kind of weather-proof polyolefin pipe and preparation method thereof Download PDFInfo
- Publication number
- CN108707286A CN108707286A CN201810432834.8A CN201810432834A CN108707286A CN 108707286 A CN108707286 A CN 108707286A CN 201810432834 A CN201810432834 A CN 201810432834A CN 108707286 A CN108707286 A CN 108707286A
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- China
- Prior art keywords
- parts
- weather
- outer layer
- proof
- polyolefin pipe
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- 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.)
- Granted
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- 229920000098 polyolefin Polymers 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000004611 light stabiliser Substances 0.000 claims abstract description 30
- -1 succinate compound Chemical class 0.000 claims abstract description 23
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 15
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 9
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims abstract description 8
- 125000004066 1-hydroxyethyl group Chemical group [H]OC([H])([*])C([H])([H])[H] 0.000 claims abstract description 6
- 229940116351 sebacate Drugs 0.000 claims abstract description 3
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 claims abstract description 3
- 229920001155 polypropylene Polymers 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 25
- 239000004743 Polypropylene Substances 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 19
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 18
- 238000009472 formulation Methods 0.000 claims description 16
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 12
- 238000005453 pelletization Methods 0.000 claims description 12
- 239000004698 Polyethylene Substances 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- YWDBZVIHZORXHG-UHFFFAOYSA-N bis(2,2,6,6-tetramethylpiperidin-1-yl) decanedioate Chemical class CC1(C)CCCC(C)(C)N1OC(=O)CCCCCCCCC(=O)ON1C(C)(C)CCCC1(C)C YWDBZVIHZORXHG-UHFFFAOYSA-N 0.000 claims description 7
- RGASRBUYZODJTG-UHFFFAOYSA-N 1,1-bis(2,4-ditert-butylphenyl)-2,2-bis(hydroxymethyl)propane-1,3-diol dihydroxyphosphanyl dihydrogen phosphite Chemical class OP(O)OP(O)O.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)C(O)(C(CO)(CO)CO)C1=C(C=C(C=C1)C(C)(C)C)C(C)(C)C RGASRBUYZODJTG-UHFFFAOYSA-N 0.000 claims description 6
- 235000019260 propionic acid Nutrition 0.000 claims description 6
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 5
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 4
- 239000000049 pigment Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 4
- 239000003508 Dilauryl thiodipropionate Substances 0.000 claims description 3
- 235000019304 dilauryl thiodipropionate Nutrition 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 239000012965 benzophenone Substances 0.000 claims description 2
- 239000004215 Carbon black (E152) Substances 0.000 claims 1
- 150000007973 cyanuric acids Chemical class 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- 229930195733 hydrocarbon Natural products 0.000 claims 1
- 150000002430 hydrocarbons Chemical class 0.000 claims 1
- 150000004291 polyenes Chemical class 0.000 claims 1
- 239000010410 layer Substances 0.000 description 62
- 238000012545 processing Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 238000002156 mixing Methods 0.000 description 10
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 230000032683 aging Effects 0.000 description 6
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- WXNUOKAEGISHHE-UHFFFAOYSA-N 1-ethyl-2,2,6,6-tetramethylpiperidin-4-ol Chemical class CCN1C(C)(C)CC(O)CC1(C)C WXNUOKAEGISHHE-UHFFFAOYSA-N 0.000 description 3
- GHKOFFNLGXMVNJ-UHFFFAOYSA-N Didodecyl thiobispropanoate Chemical compound CCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCC GHKOFFNLGXMVNJ-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- DEXFNLNNUZKHNO-UHFFFAOYSA-N 6-[3-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-3-oxopropyl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)C(CCC1=CC2=C(NC(O2)=O)C=C1)=O DEXFNLNNUZKHNO-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VNQNXQYZMPJLQX-UHFFFAOYSA-N 1,3,5-tris[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-1,3,5-triazinane-2,4,6-trione Chemical group CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CN2C(N(CC=3C=C(C(O)=C(C=3)C(C)(C)C)C(C)(C)C)C(=O)N(CC=3C=C(C(O)=C(C=3)C(C)(C)C)C(C)(C)C)C2=O)=O)=C1 VNQNXQYZMPJLQX-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001723 carbon free-radicals Chemical group 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 238000007539 photo-oxidation reaction Methods 0.000 description 1
- 125000005936 piperidyl group Chemical group 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 150000003900 succinic acid esters Chemical class 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- 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
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- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
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- 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
-
- 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
- B32B2307/552—Fatigue strength
-
- 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
- B32B2307/70—Other properties
- B32B2307/712—Weather resistant
-
- 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
- B32B2597/00—Tubular articles, e.g. hoses, pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/07—Aldehydes; Ketones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3432—Six-membered rings
- C08K5/3435—Piperidines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
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- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
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- C08K5/3475—Five-membered rings condensed with carbocyclic rings
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
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- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
- C08K5/372—Sulfides, e.g. R-(S)x-R'
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
- C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- 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)
- Compositions Of Macromolecular Compounds (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of weather-proof polyolefin pipe and preparation method thereof, the weather-proof polyolefin pipe, including the outer layer and internal layer being layered on top of each other, wherein the outer layer includes the outer layer component of following mass parts：100 parts of polyolefin, 1-2 parts of antioxidant, 0.5-1 parts of light stabilizer combination, 0.5-1.5 parts of diatomite；The internal layer includes the interior layer component of following mass parts：100 parts of polyolefin, 0.5-1 parts of antioxidant, 0.1-0.5 parts of light stabilizer combination, 0.5-1 parts of diatomite.The light stabilizer combination is 2'-(2'Hydroxyl -3'Tertiary butyl -5'Aminomethyl phenyl) -5- chlorobenzotriazoles, 2-hydroxy-4-n-octoxybenzophenone, bis- (2,2,6,6- tetramethyl-piperidyls) sebacate, poly- (1- hydroxyethyls -2,2,6,6- tetramethyl -4- hydroxy piperidines) succinate compound.Weather-proof polyolefin pipe provided by the present invention has excellent weatherability, especially suitable for open air.
Description
Technical field
The present invention relates to polyolefin pipe field, more particularly to a kind of weather-proof polyolefin pipe in open air and preparation method thereof.
Background technology
Some outdoor supply equipments are needed pipe installation outdoors, such as：Air-source water heater needs to be mounted on roof
Or balcony；Solar water heater is also needed pipe installation outdoors.Polypropylene pipe as new type plastic pipe, by
Market highly recognition, is widely used.Due to there are a large amount of unstable tertiary carbon atoms on PP strands, in hot oxygen condition
Under, it is easy to become tertiary carbon free radical, causes chain reaction, cause plastic degradation.However, tubing uses outdoors, unavoidably
Meeting irradiated by light, if not taking shading safeguard measure, its aging can be accelerated, eventually lead to tubing rupture.But
Increase shading safeguard measure in the construction process, cost will certainly be increased, and be easily damaged using shading material after a certain period of time,
Secondary construction is needed, it is very inconvenient.In addition, shading safeguard measure often influences aesthetics.
Therefore, the tubing used for open air, especially polypropylene pipe, such as PP pipes (polypropylene), PP-R are (random total
Poly- polypropylene) pipe, there is an urgent need for improving its weather resistance, the weatherability that its open air uses is promoted, and then extend its service life.
Invention content
The present invention is to make up the deficiencies in the prior art, provides a kind of weather-proof polyolefin pipe, provided by the present invention
Weather-proof polyolefin pipe have excellent weatherability, especially suitable for open air.
The present invention is to reach its purpose, and the technical solution of use is as follows：
First aspect present invention provides a kind of weather-proof polyolefin pipe, which is more preferably PA tube
Material.The polyolefin pipe includes the outer layer and internal layer being layered on top of each other, wherein the outer layer includes the outer layer group of following mass parts
Point：100 parts of polyolefin, 1-2 parts of antioxidant, 0.5-1 parts of light stabilizer combination, 0.5-1.5 parts of diatomite；
The internal layer includes the interior layer component of following mass parts：100 parts of polyolefin, 0.5-1 parts of antioxidant, light stabilizer group
Close 0.1-0.5 parts of object, 0.5-1 parts of diatomite.
The light stabilizer combination is 2'-(2'Hydroxyl -3'Tertiary butyl -5'Aminomethyl phenyl) -5- chlorobenzotriazoles,
2-hydroxy-4-n-octoxybenzophenone, bis- (2,2,6,6- tetramethyl-piperidyl) sebacates, it is poly- (1- hydroxyethyls -2,2,
6,6- tetramethyl -4- hydroxy piperidines) succinate compound.
Internal layer based on tubing of the present invention and layer structure design, and the interior layer component of the collocation present invention and outer layer component
Formula system, can obtain have excellent weather resistance especially suitable for outdoor polyolefin pipe.And especially suitable for exploitation
Polypropylene pipe can be very good to solve in the prior art due to the PP strand characteristics in polypropylene pipe, outdoors condition
Easy aging down, the problem of weatherability difference.The weather-proof polypropylene tubing developed based on the solution of the present invention is had excellent resistance to
Thermal-oxidative ageing ability and weather resistance, to can still obtain longer make under the premise of need not take shading safeguard measure
Use the service life.
Preferably, in the light stabilizer combination, 2'-(2'Hydroxyl -3'Tertiary butyl -5'Aminomethyl phenyl) -5- chlorobenzenes
And triazole, 2-hydroxy-4-n-octoxybenzophenone, bis- (2,2,6,6- tetramethyl-piperidyl) sebacates, poly- (1- hydroxyl second
Base -2,2,6,6- tetramethyl -4- hydroxy piperidines) succinate mass ratio be 3-5:2-4:1-3:1-2.Using optimum ratio
Light stabilizer combination, promotes the weather resistance and heatproof air aging performance of product, and it is superior poly- especially to obtain performance
Propylene tubing.Each component in light stabilizer can be obtained by commercially available channel, such as the corresponding product that the producers such as BASF produce,
Such as, but not limited to UV326, UV531, GW480, GW622 etc. of BASF production.
Preferably, the thickness of the outer layer is not less than 0.5mm, and no more than the 1/2 of thickness of pipe wall.It is preferred that the thickness, tubing
While with preferable weather resistance, also there is preferable load performance.
Preferably, the antioxidant is 1,3,5- tri- (3,5- di-tert-butyl-4-hydroxyl benzyl) isocyanuric acids, β-(3,5-
Di-tert-butyl-hydroxy phenyl) propionic acid n-octadecyl alcohol ester, bis- (2,4- di-tert-butyl-phenyl) pentaerythritol diphosphites,
One or more compounds in dilauryl thiodipropionate, more preferably in outer layer component, antioxidant be two kinds or
The compound of a variety of antioxidant obtains more preferably weather-proof and oxidation resistance.In some embodiments, such as above four
The proportioning of kind antioxidant is 1-2：0-1：0-1：0-0.5；Or such as β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid positive 18
Carbon alcohol ester, bis- (2,4- di-tert-butyl-phenyl) pentaerythritol diphosphites proportioning be 1:0.5, or such as 1,3,5- tri- (3,
5- di-tert-butyl-4-hydroxyl benzyls) isocyanuric acid, bis- (2,4- di-tert-butyl-phenyl) pentaerythritol diphosphites, thio two
The proportioning of propionic acid dilauryl is 1：0.5：0.5 etc..Each component in antioxidant can be obtained from commercially available channel, such as BASF
The corresponding product of equal producers' production, such as, but not limited to 3114,1076, JC-242, DLTP etc..
Add 0.5-1 parts of diatomite respectively in the outer layer component and interior layer component of the weather-proof polyolefin pipe of the present invention,
Antioxidant and light stabilizer can be adsorbed on surface by the components combination collocation such as diatomite and antioxidant and light stabilizer, diatomite,
It prevents it to external migration, ensures the long-acting persistence of antioxidant and light stabilizer.Preferably, the diatomaceous mesh number is
1000-2000 mesh, the preferably diatomite of the grain size have more preferably adsorptivity to antioxidant and light stabilizer, improve polyolefin
The weatherability of tubing.Diatomite can be obtained from commercially available channel, such as Thailand etc. is contained in Qingdao.
Preferably, the outer layer component further includes the Masterbatch of 5-10 mass parts；The interior layer component further includes 0-2 mass
The Masterbatch of part.
In some specific implementation modes of the invention, the Masterbatch includes each component of following mass parts：100 parts of carrier,
0.5-5 parts of dispersant, 30-60 parts of pigment, wherein the carrier is polyolefin, such as PP, PE etc..Masterbatch is prepared as this
The routine techniques in field does not repeat this.In some embodiments, Masterbatch is made in accordance with the following steps：By color
By double screw extruder extruding pelletization after each component mixing in master batch, processing temperature is 170-200 DEG C, obtains Masterbatch.
Pigment used can be inorganic pigment or organic pigment, can be needed according to product and be specifically chosen required pigment.Some are excellent
Select in embodiment, the dispersant preferably but be not limited to polyethylene wax, silicone, one kind in ethylene distearyl acid amide or
A variety of mixtures.
The weather-proof polyolefin pipe of the present invention, wherein the polyolefin in the outer layer component and interior layer component can select respectively
From PP or PE, particularly preferably PP-R, outer endothecium structure and ectonexine formula system using the present invention can get weatherability
Excellent polypropylene pipe can still obtain the product of longer life especially suitable for open air, and without shading measure.
Preferably, the outer layer and internal layer are combined by co-extrusion technology, and co-extrusion technology is those skilled in the art institute
The well known prior art does not repeat this.
Second aspect of the present invention provides a kind of preparation method preparing weather-proof polyolefin pipe as described above, including such as
Lower step：
Outer layer formulation material is obtained in 170-200 DEG C of extruding pelletization by double screw extruder after outer layer component is mixed；
Core formulation material is obtained in 170-200 DEG C of extruding pelletization by double screw extruder after interior layer component is mixed；
By outer layer formulation material and core formulation material under the conditions of 180-220 DEG C, it is layered on top of each other by double-layer coextrusion formation
Internal layer and outer layer.Double-layer coextrusion technology is the ordinary skill in the art, is not repeated this.In some embodiments,
With two single screw extrusion machines, double-layer coextrusion mold is configured, squeezes out ectonexine respectively, processing temperature control is 180-220 DEG C, warp
Shaping pipe is obtained after vacuum sizing cooling.
Technical solution provided by the invention has the advantages that：
The tubing of the present invention using ectonexine double-layer structure, while adding the light stabilizer combination of unique composition, obtains
A kind of polyolefin pipe of better weatherability.The tubing can solve polypropylene especially suitable for polypropylene pipe is made
When tubing uses outdoors the problem of existing easy aging, to effectively extend its service life, enhance what its open air used
Weatherability and heatproof air aging performance.
Description of the drawings
Fig. 1 is a kind of cross-sectional view of weather-proof polyolefin pipe in embodiment.
Figure label explanation：1, outer layer, 2, internal layer.
Specific implementation mode
For a better understanding of the technical solution of the present invention, with reference to the embodiment content that the present invention is further explained,
But present disclosure is not limited only to following embodiment.
It is raw materials used in following embodiment and comparative example, it is the routine that can be obtained from commercial channel unless otherwise instructed
Raw material.For example, PP powders used in embodiment come from Yanshan Petrochemical, the trade mark 4400；Antioxidant and light stabilizer purchased from bar
Si Fu, PP-R resin are South Korea Hyosung R200P；It is only to enumerate herein, not the raw material of each component according to the present invention is come
Source is limited.
Embodiment 1：
A kind of weather-proof PP-R pipe (specification S3.2 20*2.8) is prepared, outer layer thickness 0.8, internal layer thickness 2.0, outer layer is black
Color, internal layer white.Preparation method is as follows：
(1) by PP powders, silicone powder and carbon black in mass fraction ratio 100：1：30 mixing, are stirred with high speed (600 revs/min)
The machine of mixing is sufficiently stirred 5-10min, then by double screw extruder extruding pelletization, processing temperature control 170-220 DEG C it
Between, obtain outer layer black agglomerate.
By PP powders, silicone powder and titanium dioxide in mass fraction ratio 100：1：50 mixing, are stirred with high speed (700 revs/min)
The machine of mixing is sufficiently stirred 5-10min, then by double screw extruder extruding pelletization, processing temperature control 170-220 DEG C it
Between, obtain internal layer white master batch.
(2) by PP-R resins, outer layer black agglomerate, 1,3,5- tri- (3,5- di-tert-butyl-4-hydroxyl benzyls) isocyanuric acid,
β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid n-octadecyl alcohol ester, the diatomite of 1500 mesh and light stabilizer combination are pressed
Mass fraction ratio 100：8：1：0.5：1：0.8 mixing is sufficiently stirred 5-10min with high speed (650 revs/min) blender.Then
By double screw extruder extruding pelletization, processing temperature controls between 170-220 DEG C, obtains outer layer formulation material.
By PP-R resins, internal layer white master batch, bis- (2,4- di-tert-butyl-phenyl) pentaerythritol diphosphites, thio two
Propionic acid dilauryl, the diatomite of 1500 mesh and light stabilizer combination are in mass fraction ratio 100：1：0.5：0.5：0.8：
0.5 mixing is sufficiently stirred 5-10min with high speed (650 revs/min) blender, then by double screw extruder extruding pelletization,
Processing temperature controls between 170-220 DEG C, obtains core formulation material.
(3) outer layer formulation material and core formulation material are then put into respectively in two single screw extrusion machines, is configured double-deck total
Extruding mold, processing temperature control between 180-220 DEG C, rotating speed 50-90r/min, and tubing speed of production is 10-20m/min.
Again outer layer black, the weather-proof PP-R pipes of internal layer white are obtained through cooling, sizing, printing, cutting.
Light stabilizer combination used in the present embodiment is 2'-(2'Hydroxyl -3'Tertiary butyl -5'Aminomethyl phenyl) -5-
Chlorobenzotriazole, 2-hydroxy-4-n-octoxybenzophenone, bis- (2,2,6,6- tetramethyl-piperidyl) sebacates, poly- (1- hydroxyls
Base ethyl -2,2,6,6- tetramethyl -4- hydroxy piperidines) succinate is according to mass ratio 4：3：2：1 composition.
Weather-proof PP-R pipes are more as shown in table 1 below with common PP-R pipes performance：
Table 1
Wherein, the common PP-R pipes stir PP-R resins and Masterbatch for only fully mixed under 650 revs/min of rotating speed
It closes, obtained single layer tubing is squeezed out (between extrusion temperature is 170-220 DEG C) in single screw extrusion machine；The composition of Masterbatch
It is identical as the internal layer white master batch in embodiment 1, it repeats no more；The dosage of Masterbatch is be formulated gross mass 2%.
In production practice, it is PE resins, its performance detection knot of tubing obtained by the PP-R resin replacements in embodiment 1
Fruit and embodiment 1 it is substantially similar, repeat no more.
Embodiment 2：
A kind of weather-proof PP-R pipe (specification S3.2 25*3.5) is prepared, outer layer thickness 1.0, internal layer thickness 2.5, outer layer is white
Color, internal layer are colourless.Preparation method is as follows：
(1) first by PE powders, polyethylene wax and titanium dioxide in mass fraction ratio 100：1.2：60 mixing, with high speed
(600 revs/min) blender is sufficiently stirred 5-10min, and then by double screw extruder extruding pelletization, processing temperature control exists
Between 170-220 DEG C, outer layer white master batch is obtained.
(2) by PP-R resins, outer layer white master batch, 1,3,5- tri- (3,5- di-tert-butyl-4-hydroxyl benzyls) isocyanuric acid,
The diatomite and light of bis- (2,4- di-tert-butyl-phenyl) pentaerythritol diphosphites, dilauryl thiodipropionate, 1800 mesh
Stabiliser compositions are in mass fraction ratio 100：6：1：0.5：0.5：:1.5：1 mixing is filled with high speed (700 revs/min) blender
Divide stirring 5-10min.Then by double screw extruder extruding pelletization, processing temperature is controlled between 170-220 DEG C, is obtained
Outer layer formulation material.
By PP-R resins, the diatomite of β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid n-octadecyl alcohol ester, 1800 mesh
With light stabilizer combination in mass fraction ratio 100：0.5：0.5：0.5 mixing, it is abundant with high speed (700 revs/min) blender
5-10min are stirred, then by double screw extruder extruding pelletization, processing temperature controls between 170-220 DEG C, obtains interior
Layer formula material.
(3) outer layer formulation material and core formulation material are put into respectively in two single screw extrusion machines, configures double-layer coextrusion mould
Tool, processing temperature control between 180-220 DEG C, rotating speed 50-100r/min, and tubing speed of production is 10-15m/min.Again
Outer layer white, the colourless weather-proof PP-R pipes of internal layer are obtained through cooling, sizing, printing, cutting.
Light stabilizer combination used in the present embodiment is 2'-(2'Hydroxyl -3'Tertiary butyl -5'Aminomethyl phenyl) -5-
Chlorobenzotriazole, 2-hydroxy-4-n-octoxybenzophenone, bis- (2,2,6,6- tetramethyl-piperidyl) sebacates, poly- (1- hydroxyls
Base ethyl -2,2,6,6- tetramethyl -4- hydroxy piperidines) succinate is according to mass ratio 4：3：2：1 composition.
Weather-proof PP-R pipes are more as shown in table 2 below with common PP-R pipes performance：
Table 2
Embodiment 3
Embodiment 3 is compared with embodiment 1, is only that the composition of light stabilizer combination used is different, used in embodiment 3
Light stabilizer combination in, 2'-(2'Hydroxyl -3'Tertiary butyl -5'Aminomethyl phenyl) -5- chlorobenzotriazoles, 2- hydroxyls -4-
Oxy-octyl benzophenone, bis- (2,2,6,6- tetramethyl-piperidyl) sebacates, poly- (1- hydroxyethyls -2,2,6,6- tetramethyls
Base -4- hydroxy piperidines) succinate mass ratio be 3:2:1:1.3 gained tubing of embodiment its result and embodiment 1 after testing
It is substantially similar, repeat no more.
Comparative example 1
The comparative example 1 is substantially the same manner as Example 2, is different only in that, light stabilizer combination is not added in core formulation material
Object.The testing result of gained tubing see the table below 3 compared with Example 2.
Table 3
By table 3 as it can be seen that using internal layer and outer layer structure design, and in internal layer and outer layer use the present invention light it is steady
Determine agent composition, excellent product performance, good weatherability.And if internal layer do not add the present invention light stabilizer combination, it is weather-proof
Property be deteriorated, and bearing strength substantially reduces after plastics photooxidation resistance.
Comparative example 2-5
Comparative example 2-4 is substantially the same manner as Example 2, is different only in that light stabilizer combination difference used in it, phase
For in embodiment 2, without addition 2-hydroxy-4-n-octoxybenzophenone and bis- (2,2,6,6- tetramethyls in comparative example 2
Piperidyl) sebacate, without adding bis- (2,2,6,6- tetramethyl-piperidyl) sebacates and poly- (1- hydroxyls in comparative example 3
Ethyl -2,2,6,6- tetramethyl -4- hydroxy piperidines) succinate, without addition 2&apos in comparative example 4;-(2'Hydroxyl -3'Tertiary fourth
Base -5'Aminomethyl phenyl) -5- chlorobenzotriazoles and poly- (1- hydroxyethyls -2,2,6,6- tetramethyl -4- hydroxy piperidines) succinic acid
Ester is only added to 2&apos in comparative example 5;-(2'Hydroxyl -3'Tertiary butyl -5'Aminomethyl phenyl) -5- chlorobenzotriazoles.
Tubing obtained by comparative example 2-5 is detected through weather resistance, and gray level is respectively 3 grades, 2 grades, 3 grades and 2 grades.And
The light stabilizer combination made of four kinds of compound combinations, acts synergistically from each other in embodiment 2, has more preferably resistance to
Effect is waited, 4 grades of gray level is reached.
It will be understood by those skilled in the art that under the introduction of this specification, the present invention can be made some modifications or
Adjustment.These modifications or adjustment should also be as within the scope of the claims in the present invention.
Claims (10)
1. a kind of weather-proof polyolefin pipe, which is characterized in that the polyolefin pipe includes the outer layer and internal layer being layered on top of each other,
Described in outer layer include following mass parts outer layer component：100 parts of polyolefin, 1-2 parts of antioxidant, light stabilizer combination 0.5-
1 part, 0.5-1.5 parts of diatomite；
The internal layer includes the interior layer component of following mass parts：100 parts of polyolefin, 0.5-1 parts of antioxidant, light stabilizer combination
0.1-0.5 parts, 0.5-1 parts of diatomite；
The light stabilizer combination is 2'-(2'Hydroxyl -3'Tertiary butyl -5'Aminomethyl phenyl) -5- chlorobenzotriazoles, 2- hydroxyls
Base -4- oxy-octyl benzophenones, bis- (2,2,6,6- tetramethyl-piperidyl) sebacates, it is poly- (1- hydroxyethyls -2,2,6,6-
Tetramethyl -4- hydroxy piperidines) succinate compound.
2. weather-proof polyolefin pipe according to claim 1, which is characterized in that in the light stabilizer combination, 2'-
(2'Hydroxyl -3'Tertiary butyl -5'Aminomethyl phenyl) -5- chlorobenzotriazoles, 2-hydroxy-4-n-octoxybenzophenone, it is bis- (2,
2,6,6- tetramethyl-piperidyls) sebacate, poly- (1- hydroxyethyls -2,2,6,6- tetramethyl -4- hydroxy piperidines) succinate
Mass ratio be 3-5:2-4:1-3:1-2.
3. weather-proof polyolefin pipe according to claim 1 or 2, which is characterized in that the outer layer thickness is not less than
0.5mm, and no more than the 1/2 of thickness of pipe wall.
4. according to the weather-proof polyolefin pipe of claim 1-3 any one of them, which is characterized in that the antioxidant is 1,3,5-
Three (3,5- di-tert-butyl-4-hydroxyl benzyls) isocyanuric acids, the positive octadecanol of β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid
It is one or more in ester, bis- (2,4- di-tert-butyl-phenyl) pentaerythritol diphosphites, dilauryl thiodipropionate
Compound.
5. according to the weather-proof polyolefin pipe of claim 1-4 any one of them, which is characterized in that the diatomaceous grain size is
1000-2000 mesh.
6. according to the weather-proof polyolefin pipe of claim 1-5 any one of them, which is characterized in that the outer layer component further includes
The Masterbatch of 5-10 mass parts；The interior layer component further includes the Masterbatch of 0-2 mass parts.
7. weather-proof polyolefin pipe according to claim 6, which is characterized in that the Masterbatch includes following mass parts
Each component：100 parts of carrier, 0.5-5 parts of dispersant, 30-60 parts of pigment, wherein the carrier is polyolefin；
Preferably, the dispersant is one or more mixtures in polyethylene wax, silicone, ethylene distearyl acid amide.
8. according to the weather-proof polyolefin pipe of claim 1-7 any one of them, which is characterized in that the outer layer component and internal layer
Polyolefin in component is respectively selected from PP or PE, it is preferred that the PP is PP-R；
Preferably, the weather-proof polyolefin pipe is weather-proof polypropylene tubing, the polyene in the outer layer component and interior layer component
Hydrocarbon is PP, preferably PP-R.
9. weather-proof polyolefin pipe according to claim 1 or 2, which is characterized in that the outer layer and internal layer pass through co-extrusion
Technology is combined.
10. a kind of preparing the preparation method such as the weather-proof polyolefin pipe of claim 1-9 any one of them, which is characterized in that
Include the following steps：
Outer layer formulation material is obtained in 170-200 DEG C of extruding pelletization by double screw extruder after outer layer component is mixed；
Core formulation material is obtained in 170-200 DEG C of extruding pelletization by double screw extruder after interior layer component is mixed；
By outer layer formulation material and core formulation material under the conditions of 180-220 DEG C, the internal layer being layered on top of each other is formed by double-layer coextrusion
And outer layer.
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| CN108707286B (en) | 2020-11-10 |
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