CN116178816A - Composition for polyethylene material, polyethylene material and preparation method - Google Patents
Composition for polyethylene material, polyethylene material and preparation method Download PDFInfo
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- CN116178816A CN116178816A CN202211600194.XA CN202211600194A CN116178816A CN 116178816 A CN116178816 A CN 116178816A CN 202211600194 A CN202211600194 A CN 202211600194A CN 116178816 A CN116178816 A CN 116178816A
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- polyethylene material
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- 239000000463 material Substances 0.000 title claims abstract description 98
- -1 polyethylene Polymers 0.000 title claims abstract description 55
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 49
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 49
- 239000000203 mixture Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 38
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 34
- 239000004611 light stabiliser Substances 0.000 claims abstract description 24
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 21
- 150000001450 anions Chemical class 0.000 claims abstract description 15
- 239000003463 adsorbent Substances 0.000 claims abstract description 13
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- QUAMTGJKVDWJEQ-UHFFFAOYSA-N octabenzone Chemical compound OC1=CC(OCCCCCCCC)=CC=C1C(=O)C1=CC=CC=C1 QUAMTGJKVDWJEQ-UHFFFAOYSA-N 0.000 claims description 14
- 125000001841 imino group Chemical group [H]N=* 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 10
- 229910052709 silver Inorganic materials 0.000 claims description 8
- 239000004332 silver Substances 0.000 claims description 8
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 7
- UWDMKTDPDJCJOP-UHFFFAOYSA-N 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-ium-4-carboxylate Chemical compound CC1(C)CC(O)(C(O)=O)CC(C)(C)N1 UWDMKTDPDJCJOP-UHFFFAOYSA-N 0.000 claims description 6
- GHKOFFNLGXMVNJ-UHFFFAOYSA-N Didodecyl thiobispropanoate Chemical compound CCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCC GHKOFFNLGXMVNJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003508 Dilauryl thiodipropionate Substances 0.000 claims description 6
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 6
- 239000012964 benzotriazole Substances 0.000 claims description 6
- 235000019304 dilauryl thiodipropionate Nutrition 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 6
- 230000008569 process Effects 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
- 229910017944 Ag—Cu Inorganic materials 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- VNQNXQYZMPJLQX-UHFFFAOYSA-N 1,3,5-tris[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-1,3,5-triazinane-2,4,6-trione Chemical compound 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 claims description 3
- XYXJKPCGSGVSBO-UHFFFAOYSA-N 1,3,5-tris[(4-tert-butyl-3-hydroxy-2,6-dimethylphenyl)methyl]-1,3,5-triazinane-2,4,6-trione Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C)=C1CN1C(=O)N(CC=2C(=C(O)C(=CC=2C)C(C)(C)C)C)C(=O)N(CC=2C(=C(O)C(=CC=2C)C(C)(C)C)C)C1=O XYXJKPCGSGVSBO-UHFFFAOYSA-N 0.000 claims description 3
- RRFWWSOELBTKEK-UHFFFAOYSA-N P(O)(O)O.P(O)(O)O.C(CCCCCCCCCCCCCCCCC)C(O)(C(CO)(CO)CO)CCCCCCCCCCCCCCCCCC Chemical compound P(O)(O)O.P(O)(O)O.C(CCCCCCCCCCCCCCCCC)C(O)(C(CO)(CO)CO)CCCCCCCCCCCCCCCCCC RRFWWSOELBTKEK-UHFFFAOYSA-N 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 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 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 3
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- FQUNFJULCYSSOP-UHFFFAOYSA-N bisoctrizole Chemical compound N1=C2C=CC=CC2=NN1C1=CC(C(C)(C)CC(C)(C)C)=CC(CC=2C(=C(C=C(C=2)C(C)(C)CC(C)(C)C)N2N=C3C=CC=CC3=N2)O)=C1O FQUNFJULCYSSOP-UHFFFAOYSA-N 0.000 claims description 3
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical group [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims description 3
- 229960001545 hydrotalcite Drugs 0.000 claims description 3
- 229910001701 hydrotalcite Inorganic materials 0.000 claims description 3
- JKBYAWVSVVSRIX-UHFFFAOYSA-N octadecyl 2-(1-octadecoxy-1-oxopropan-2-yl)sulfanylpropanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)SC(C)C(=O)OCCCCCCCCCCCCCCCCCC JKBYAWVSVVSRIX-UHFFFAOYSA-N 0.000 claims description 3
- DXGLGDHPHMLXJC-UHFFFAOYSA-N oxybenzone Chemical compound OC1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1 DXGLGDHPHMLXJC-UHFFFAOYSA-N 0.000 claims description 3
- 229940116351 sebacate Drugs 0.000 claims description 3
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 claims description 3
- 229920001661 Chitosan Polymers 0.000 claims description 2
- FKIOYBLZUCCLTL-UHFFFAOYSA-N 4-butyl-2-tert-butyl-5-methylphenol Chemical compound CCCCC1=CC(C(C)(C)C)=C(O)C=C1C FKIOYBLZUCCLTL-UHFFFAOYSA-N 0.000 claims 1
- 239000007983 Tris buffer Substances 0.000 claims 1
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000460 chlorine Substances 0.000 abstract description 10
- 229910052801 chlorine Inorganic materials 0.000 abstract description 10
- 230000007774 longterm Effects 0.000 abstract description 9
- 206010051246 Photodermatosis Diseases 0.000 abstract description 6
- 230000004048 modification Effects 0.000 abstract description 6
- 238000012986 modification Methods 0.000 abstract description 6
- 230000008845 photoaging Effects 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000006096 absorbing agent Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 14
- 230000032683 aging Effects 0.000 description 8
- 238000001556 precipitation Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 7
- 230000002195 synergetic effect Effects 0.000 description 7
- 150000003254 radicals Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 229940124543 ultraviolet light absorber Drugs 0.000 description 4
- 239000004599 antimicrobial Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- PRWJPWSKLXYEPD-UHFFFAOYSA-N 4-[4,4-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butan-2-yl]-2-tert-butyl-5-methylphenol Chemical compound C=1C(C(C)(C)C)=C(O)C=C(C)C=1C(C)CC(C=1C(=CC(O)=C(C=1)C(C)(C)C)C)C1=CC(C(C)(C)C)=C(O)C=C1C PRWJPWSKLXYEPD-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003809 water extraction Methods 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000003335 steric effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- 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
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- 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
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a composition for a polyethylene material, the polyethylene material and a preparation method, wherein the composition for the polyethylene material comprises 0.5-5 parts by weight of an antibacterial agent, 0.1-0.5 part by weight of an anion adsorbent, 0.1-0.5 part by weight of an ultraviolet absorber, 0.1-0.5 part by weight of a light stabilizer, 0.1-0.5 part by weight of a main antioxidant and 0.2-1 part by weight of an auxiliary antioxidant. According to the invention, through the matched use of the antioxidant, the light stabilizer, the ultraviolet absorber and the anion absorber, the PE-RT material is subjected to blending modification, so that the long-acting photo-aging performance, the antibacterial performance, the chlorine resistance and the long-term mechanical performance of the material are ensured, and the ultraviolet-resistant antibacterial chlorine-resistant polyethylene material for the PE-RT pipe of the water purifier is prepared.
Description
Technical Field
The invention relates to the technical field of polyethylene, in particular to a composition for a polyethylene material, the polyethylene material and a preparation method.
Background
The enhancement of antibacterial consciousness and the expansion of the application field of antibacterial materials are particularly important, and the pipe is used as a water conveying medium, and particularly needs to enhance the antibacterial function in the aspects of drinking; in the actual use environment of the pipe, the transported water can be disinfected by using chlorine-containing disinfectants and the like, and the residual chloride ions in the water have strong oxidation effect on the pipe; meanwhile, the long-term photo-thermal oxidation aging performance of the exposed pipe is considered, so that the PE-RT pipe capable of being used for conveying drinking water is particularly necessary for guaranteeing the safety and health of the drinking water.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to provide a composition for a polyethylene material, the polyethylene material and a preparation method.
The invention is realized in the following way:
in a first aspect, the present invention provides a composition for polyethylene material comprising 0.5 to 5 parts by weight of an antibacterial agent, 0.1 to 0.5 part by weight of an anionic adsorbent, 0.1 to 0.5 part by weight of an ultraviolet absorber, 0.1 to 0.5 part by weight of a light stabilizer, 0.1 to 0.5 part by weight of a primary antioxidant, and 0.2 to 1 part by weight of a secondary antioxidant.
In an alternative embodiment, the antimicrobial agent is Ag-Cu/SiO 2 Silver/activated carbon, ag/ZnO and chitosanOne or more of the following.
In alternative embodiments, the ultraviolet absorber is one or more of 2-hydroxy-4-n-octoxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2- [ 2-hydroxy-5- (1, 3-tetramethylbutyl) phenyl ] benzotriazole, and 2,2' -methylenebis [6- (2H-benzotriazol-2-yl) -4- (1, 3-tetramethylbutyl) phenol ].
In an alternative embodiment of the present invention, the light stabilizer is bis (2, 6-tetramethyl piperidinyl) sebacate poly (4-hydroxy-2, 6-tetramethyl-1-piperidineethanol) succinate and poly { [6- [ (1, 3-tetramethylbutyl) amino ] ] -1,3, 5-triazine-2, 4-bis [ (2, 6, -tetramethyl-piperidinyl) imino ] -1, 6-hexamethylenediyl [ (2, 6-tetramethyl-4-piperidinyl) imino ] }.
In alternative embodiments, the primary antioxidant is one or more of 1,3, 5-trimethyl-2, 4,6- (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, 1,3, 5-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid (3114), 2' -oxamido-bis [ ethyl-3- (3, 5-di-tert-butyl-4-hydroxyphenyl) ] propionate, 1,3, 5-tris [ [4- (1, 1-dimethylethyl) -3-hydroxy-2, 6-dimethylphenyl ] methyl ] -1,3, 5-triazine-2, 4, 6-trione, and 1, 3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane.
In an alternative embodiment, the secondary antioxidant is one or more of dilauryl thiodipropionate, dioctadecyl thiodipropionate, dilauryl thiodipropionate, tris (2, 4-di-tert-butylphenyl) phosphite and dioctadecyl pentaerythritol bisphosphite.
In an alternative embodiment, the anion adsorbent is one of hydrotalcite or hydrotalcite-like material and a lignocellulose anion exchanger.
In an alternative embodiment of the present invention, the light stabilizer comprises poly (4-hydroxy-2, 6-tetramethyl-1-piperidineethanol) succinate and poly { [6- [ (1, 3-tetramethylbutyl) amino ] ] -1,3, 5-triazine-2, 4-bis [ (2, 6), -tetramethyl-piperidinyl) imino ] -1, 6-hexamethylenediyl [ (2, 6-tetramethyl-4-piperidinyl) imino ] }; and/or the ultraviolet absorber comprises 2-hydroxy-4-n-octoxybenzophenone and 2- [ 2-hydroxy-5- (1, 3-tetramethylbutyl) phenyl ] benzotriazole.
In a second aspect, the present invention provides a polyethylene material comprising 93wt% to 98wt% polyethylene and 2wt% to 7wt% of the composition for a polyethylene material according to any of the preceding embodiments.
In a third aspect, the invention provides a preparation method of the polyethylene material according to the foregoing embodiment, wherein the mixed raw materials are put into a co-rotating twin-screw granulation device for granulation, and the modified polyethylene material is obtained, and the material temperature is 160-230 ℃.
The invention has the following beneficial effects:
according to the invention, through the matched use of the antioxidant, the light stabilizer, the ultraviolet absorber, the antibacterial agent and the anion adsorbent, the PE-RT material is subjected to blending modification, so that the long-acting photo-aging performance, the antibacterial performance, the chlorine resistance and the long-term mechanical performance of the material are ensured, and the ultraviolet-resistant antibacterial chlorine-resistant polyethylene material for the PE-RT pipe of the water purifier is prepared.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
The embodiment provides a composition for polyethylene material, which comprises 0.5-5 parts by weight of antibacterial agent, 0.1-0.5 part by weight of anion adsorbent, 0.1-0.5 part by weight of ultraviolet absorber, 0.1-0.5 part by weight of light stabilizer, 0.1-0.5 part by weight of main antioxidant and 0.2-1 part by weight of auxiliary antioxidant.
According to the invention, through the matched use of the antioxidant, the light stabilizer, the ultraviolet absorber, the antibacterial agent and the anion adsorbent, the PE-RT material is subjected to blending modification, so that the long-acting photo-aging performance, the antibacterial performance, the chlorine resistance and the long-term mechanical performance of the material are ensured, and the ultraviolet-resistant antibacterial chlorine-resistant polyethylene material for the PE-RT pipe of the water purifier is prepared.
Specifically, in some embodiments, the antimicrobial agent may be 0.1, 0.2, 0.3, 0.4, or 0.5 parts by weight, the anion adsorbent may be 0.1, 0.2, 0.3, 0.4, or 0.5 parts by weight, the ultraviolet absorber may be 0.1, 0.2, 0.3, 0.4, or 0.5 parts by weight, the light stabilizer may be 0.1, 0.2, 0.3, 0.4, or 0.5 parts by weight, the primary antioxidant may be 0.1, 0.2, 0.3, 0.4, or 0.5 parts by weight, and the secondary antioxidant may be 0.2, 0.4, 0.6, 0.8, or 1.0 parts by weight, each component may also be selected to be any of course within the corresponding ranges.
In some embodiments of the present application, the antimicrobial agent is Ag-Cu/SiO 2 One or more of silver/activated carbon, ag/ZnO and chitosan.
Ag-Cu/SiO in this example 2 The silver/activated carbon refers to silver-loaded activated carbon, and the Ag/ZnO refers to silver inorganic antibacterial material taking nano ZnO as a carrier.
In some embodiments of the present application, the ultraviolet absorber is one or more of 2-hydroxy-4-n-octoxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2- [ 2-hydroxy-5- (1, 3-tetramethylbutyl) phenyl ] benzotriazole, and 2,2' -methylenebis [6- (2H-benzotriazol-2-yl) -4- (1, 3-tetramethylbutyl) phenol ].
In some embodiments, the ultraviolet absorber selects 2-hydroxy-4-n-octoxybenzophenone and 2- [ 2-hydroxy-5- (1, 3-tetramethylbutyl) phenyl ] benzotriazole to form a synergistic effect, so that the material has a long-acting ultraviolet absorption effect, meanwhile, the existence of benzene rings in molecules greatly enhances the steric effect, prevents the sliding of the molecules, ensures the excellent precipitation resistance of the material, and ensures the integrity of the material.
In some embodiments of the present application, the light stabilizer is bis (2, 6-tetramethyl piperidinyl) sebacate poly (4-hydroxy-2, 6-tetramethyl-1-piperidineethanol) succinate and poly { [6- [ (1, 3-tetramethylbutyl) amino ] ] -1,3, 5-triazine-2, 4-bis [ (2, 6, -tetramethyl-piperidinyl) imino ] -1, 6-hexamethylenediyl [ (2, 6-tetramethyl-4-piperidinyl) imino ] }.
In some embodiments of the present invention, in some embodiments, the light stabilizer comprises poly (4-hydroxy-2, 6-tetramethyl-1-piperidineethanol) succinate and poly { [6- [ (1, 3-tetramethylbutyl) amino ] ] -1,3, 5-triazine-2, 4-bis [ (2, 6), -tetramethyl-piperidinyl) imino ] -1, 6-hexamethylenebis [ (2, 6-tetramethyl-4-piperidinyl) imino ] }, and the two are compounded for use, so that a good synergistic effect is formed, the addition amount is reduced, the processing heat stability of the material is enhanced, and the material is endowed with excellent precipitation resistance and water extraction resistance.
In some embodiments of the present application, the primary antioxidant is one or more of 1,3, 5-trimethyl-2, 4,6- (3, 5-di-tert-butyl-4-hydroxybenzyl) benzene, 1,3, 5-tris (3, 5-di-tert-butyl-4-hydroxybenzyl) isocyanuric acid (3114), 2' -oxamido-bis [ ethyl-3- (3, 5-di-tert-butyl-4-hydroxyphenyl) ] propionate, 1,3, 5-tris [ [4- (1, 1-dimethylethyl) -3-hydroxy-2, 6-dimethylphenyl ] methyl ] -1,3, 5-triazine-2, 4, 6-trione, and 1, 3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane.
In some embodiments of the present application, the secondary antioxidant is one or more of dilauryl thiodipropionate, dioctadecyl thiodipropionate, dilauryl thiodipropionate, tris (2, 4-di-tert-butylphenyl) phosphite, and distearyl pentaerythritol bisphosphite.
In some embodiments of the present application, the anion adsorbent is one of hydrotalcite or hydrotalcite-like material and a lignocellulosic anion exchanger.
Still further embodiments of the present application provide a polyethylene material comprising 93wt% to 98wt% polyethylene and 2wt% to 7wt% of the composition for a polyethylene material of any of the previous embodiments.
The application also provides a preparation method of the polyethylene material, which is characterized in that the mixed raw materials are put into a homodromous double-screw granulation device for granulation, so as to obtain the modified polyethylene material, wherein the temperature of the raw materials is 160-230 ℃.
The features and capabilities of the present invention are described in further detail below in connection with the examples.
The following examples specifically include the following steps:
1. the raw materials are precisely weighed according to the formula proportion.
2. The components in the formula are fully stirred by stirring equipment, so that the components are fully and uniformly distributed on a physical level. And (3) putting the stirred raw materials into a homodromous double-screw granulating device, controlling the processing temperature to be 160-230 ℃, and granulating to obtain the modified material.
3. The mechanical property, antibacterial property and ultraviolet aging resistance of the material are detected.
Example 1 and comparative examples 1 to 6
An ultraviolet-resistant antibacterial polyethylene material is prepared, wherein the polyethylene base material is PE-RT, and the preparation method comprises the following steps:
(1) The components were precisely weighed according to the following formulation proportions.
(2) The prepared raw materials are stirred for more than 10 minutes by a stirrer.
(3) Granulating with a homodromous double-screw granulator, and controlling the processing temperature to 160-230 ℃.
(4) And detecting various properties of the granulated modified material, and meeting the requirements of the following table.
The stabilizers 622 and 944 are compounded to form a light stabilizer compounding system with the same action mechanism, and the two light stabilizers are subjected to complementary action, the action of active groups is enhanced, and the synergistic action is fully exerted through action mechanisms such as free radical capturing, hydroperoxide decomposition, excited state energy quenching and the like.
The UV-531 and UV-5411 are compounded, which belongs to an ultraviolet light absorber compounding system with two different action mechanisms, and compared with a single ultraviolet light absorber, the ultraviolet light absorber can expand the wavelength range for absorbing ultraviolet light, and can be matched with each other, so that the material has a wide-range and long-acting ultraviolet light absorption effect.
Antioxidant 1330 and antioxidant 3114 have the same mechanism of action, and produce synergistic effect, so that one of the consumed antioxidants can be timely regenerated to play the role of resisting oxidation, and the other consumed antioxidant can generate free radicals in the repeated regeneration process and still has the role of resisting oxidation.
The antioxidant 412s is compounded with antioxidants 1330, 3114, 1330, 3114 are free radical "traps", 412s are hydroperoxide decomposers, the former is first consumed to form ROOH, the latter decomposes ROOH, and in the process, the former is "regenerated" to play a role in resisting oxygen again.
The antioxidant system, the ultraviolet light absorber and the light stabilizer form a synergistic effect, the photo-aging process and the thermal-oxidative aging process are free radical chain reactions, and the antioxidants are consumed when free radicals are generated in the bond aging process. The use of the light stabilizer can reduce free radicals generated by photo-aging and reduce the consumption of the antioxidant. The antioxidant stabilizes the product, protects the light stabilizer with poor heat stability, and makes the light stabilizer fully play a role of light stabilization, so that the light, heat and oxygen stability of the product are improved.
The light stabilizer and the ultraviolet absorber form synergistic action, and the ultraviolet absorber dispersed in the resin cannot absorb the ultraviolet light completely, but when the light stabilizer is used together, unabsorbed ultraviolet light can be released through a photophysical process, so that damage to a polymer is avoided.
The selection of the auxiliary agents fully considers the extraction resistance, the water precipitation resistance, the processing heat stability, the hot and cold water use scene and the long-term photo-thermal oxidation aging performance, and fully ensures the integrity of the materials and the use of the auxiliary agents in pipes for conveying hot and cold water.
The LDHs adsorbent can reduce the use amount of the antioxidant, and simultaneously ensures the removal and purification of chloride ions in water, so that the whole material has the advantage of cost performance.
The silver/activated carbon and the Ag/ZnO are compounded for use, so that the antibacterial efficiency and the long-acting antibacterial property of the material are improved.
Example 2:
an ultraviolet-resistant antibacterial polyethylene material is prepared, wherein the polyethylene base material is PE-RT, and the preparation method comprises the following steps:
(1) The components were precisely weighed according to the following formulation proportions.
(2) The prepared raw materials are stirred for more than 10 minutes by a stirrer.
(3) Granulating with a homodromous double-screw granulator, and controlling the processing temperature to 160-230 ℃.
(4) And detecting various properties of the granulated modified material, and meeting the requirements of the following table.
The antioxidant 1330 is completely used, the addition amount of the antioxidant needs to be properly increased, and the long-term aging performance of the material is ensured.
The LDHs adsorbent can be replaced by lignocellulose anion adsorbent, but the addition amount needs to be properly increased to ensure the chlorine resistance of the material.
UV-531 can be used instead of UV-5431, but the addition amount needs to be properly increased to achieve the same ultraviolet absorption effect.
Ag-Cu/SiO can be used for silver/activated carbon 2 The substitution is performed, but the addition amount needs to be increased appropriately to ensure the antibacterial property of the material.
The light stabilizer 944 is completely used, and the addition amount needs to be properly increased to ensure the long-term photo-thermal stability of the material.
This example is an alternative to example 1, in which the OIT value of the material is somewhat reduced, but the overall performance, extraction resistance, cost performance and safety in use are still guaranteed. Comparative example 7:
preparing an ultraviolet-resistant antibacterial polyethylene material, wherein the polyethylene base material is PE-RT:
(1) The components were precisely weighed according to the following formulation proportions.
(2) The prepared raw materials are stirred for more than 10 minutes by a stirrer.
(3) Granulating with a homodromous double-screw granulator, and controlling the processing temperature to 160-230 ℃.
(4) And detecting various properties of the granulated modified material, and meeting the requirements of the following table.
In this comparative example, 168 was used as an auxiliary antioxidant, and the amount of the auxiliary antioxidant added was increased, but the OIT value of the whole material was still significantly reduced as compared with that of example 1.
The material prepared in this comparative example was compared with the material prepared in example 1 by standing at room temperature for three months, and the surface of the particles of the material in this comparative example had a precipitation phenomenon, which did not satisfy the precipitation resistance that the material had to satisfy.
The material prepared in the comparative example is subjected to a one-month water boiling comparative test at 80 ℃ with the material prepared in the example 1, and the surface precipitation of the material in the comparative example is obvious and does not meet the material requirement.
From the comparative example, it is concluded that the auxiliary antioxidant is 412s, so that the extraction resistance and the long-term aging performance required by the material are more satisfied.
Comparative example 8:
preparing an ultraviolet-resistant antibacterial polyethylene material, wherein the polyethylene base material is PE-RT:
(1) The components were precisely weighed according to the following formulation proportions.
(2) The prepared raw materials are stirred for more than 10 minutes by a stirrer.
(3) Granulating with a homodromous double-screw granulator, and controlling the processing temperature to 160-230 ℃.
(4) And detecting various properties of the granulated modified material, and meeting the requirements of the following table.
In the comparative example, the antioxidant 1010 is used as a main antioxidant, and compared with the example 2, the OIT is obviously improved, which proves that the antioxidant 1010 endows the material with excellent ageing resistance.
The material prepared in this comparative example, which was compared with the material prepared in example 2 by standing at room temperature for three months, had a remarkable precipitation phenomenon on the surface of the particles of the material in this comparative example, and example 2 was unchanged, and did not satisfy the precipitation resistance that the material had to satisfy.
From the comparative example, the main antioxidants 1330 and 3114 are adopted, so that the extraction resistance required by the materials is more met, and the use safety of the materials applied to cold and hot water conveying scenes is met.
According to the invention, through the matched use of the antioxidant, the light stabilizer, the ultraviolet absorber and the anion absorber, the PE-RT material is subjected to blending modification, the water extraction resistance, migration resistance, processing thermal stability and the synergistic effect among the auxiliaries are considered in the process of selecting the material, the auxiliaries with large molecular structure steric hindrance effect and large molecular weight are selected, and the long-acting photoaging performance, antibacterial performance, chlorine resistance and long-term mechanical performance of the material are ensured, so that the ultraviolet-resistant antibacterial chlorine-resistant polyethylene material for the PE-RT pipe of the water purifier is prepared.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A composition for polyethylene materials is characterized by comprising 0.5-5 parts by weight of an antibacterial agent, 0.1-0.5 part by weight of an anion adsorbent, 0.1-0.5 part by weight of an ultraviolet absorber, 0.1-0.5 part by weight of a light stabilizer, 0.1-0.5 part by weight of a primary antioxidant and 0.2-1 part by weight of a secondary antioxidant.
2. The composition for polyethylene material according to claim 1, wherein the antibacterial agent is Ag-Cu/SiO 2 One or more of silver/activated carbon, ag/ZnO and chitosan.
3. The composition for polyethylene material according to claim 1, wherein the ultraviolet absorber is one or more of 2-hydroxy-4-n-octoxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2- [ 2-hydroxy-5- (1, 3-tetramethylbutyl) phenyl ] benzotriazole and 2,2' -methylenebis [6- (2H-benzotriazol-2-yl) -4- (1, 3-tetramethylbutyl) phenol ].
4. A composition for polyethylene material according to claim 1, wherein, the light stabilizer is bis (2, 6-tetramethyl piperidinyl) sebacate poly (4-hydroxy-2, 6-tetramethyl-1-piperidineethanol) succinate and poly { [6- [ (1, 3-tetramethylbutyl) amino ] ] -1,3, 5-triazine-2, 4-bis [ (2, 6, -tetramethyl-piperidinyl) imino ] -1, 6-hexamethylenediyl [ (2, 6-tetramethyl-4-piperidinyl) imino ] }.
5. The composition for polyethylene material according to claim 1, wherein the primary antioxidant is one or more of 1,3, 5-trimethyl-2, 4,6- (3, 5-di-t-butyl-4-hydroxybenzyl) benzene, 1,3, 5-tris (3, 5-di-t-butyl-4-hydroxybenzyl) isocyanuric acid, 2' -oxamido-bis [ ethyl-3- (3, 5-di-t-butyl-4-hydroxyphenyl) ] propionate, 1,3, 5-tris [ [4- (1, 1-dimethylethyl) -3-hydroxy-2, 6-dimethylphenyl ] methyl ] -1,3, 5-triazine-2, 4, 6-trione and 1, 3-tris (2-methyl-4-hydroxy-5-t-butylphenyl) butane.
6. The composition for polyethylene material according to claim 1, wherein the secondary antioxidant is one or more of dilauryl thiodipropionate, dioctadecyl thiodipropionate, dilauryl thiodipropionate, tris (2, 4-di-t-butylphenyl) phosphite and distearyl pentaerythritol bisphosphite.
7. The composition for polyethylene material according to claim 1, wherein the anion adsorbent is hydrotalcite or one of hydrotalcite-like material and lignocellulose anion exchanger.
8. A composition for polyethylene material according to claim 1, wherein, the light stabilizer comprises poly (4-hydroxy-2, 6-tetramethyl-1-piperidineethanol) succinate and poly { [6- [ (1, 3-tetramethylbutyl) amino ] ] -1,3, 5-triazine-2, 4-bis [ (2, 6), -tetramethyl-piperidinyl) imino ] -1, 6-hexamethylenediyl [ (2, 6-tetramethyl-4-piperidinyl) imino ] }; and/or the ultraviolet absorber comprises 2-hydroxy-4-n-octoxybenzophenone and 2- [ 2-hydroxy-5- (1, 3-tetramethylbutyl) phenyl ] benzotriazole.
9. A polyethylene material comprising 93wt% to 98wt% of polyethylene and 2wt% to 7wt% of the composition for polyethylene material according to any one of claims 1 to 8.
10. A process for producing a polyethylene material according to claim 9, characterized in that the blended raw materials are put into a co-rotating twin-screw granulating apparatus for granulation to obtain a modified polyethylene material, wherein the material temperature is 160 ℃ to 230 ℃.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103146028A (en) * | 2013-03-08 | 2013-06-12 | 江西吉祥新材料有限公司 | Additive composition for polyolefin and application of additive composition as well as polyolefin combustion |
| CN103724773A (en) * | 2013-12-19 | 2014-04-16 | 江苏洁润管业有限公司 | Nanometer antimicrobial polyethylene tube material and preparing method thereof |
| CN104744769A (en) * | 2013-12-30 | 2015-07-01 | 青岛万力科技有限公司 | Antistatic flame retardant polyethylene high polymer material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146028A (en) * | 2013-03-08 | 2013-06-12 | 江西吉祥新材料有限公司 | Additive composition for polyolefin and application of additive composition as well as polyolefin combustion |
| CN103724773A (en) * | 2013-12-19 | 2014-04-16 | 江苏洁润管业有限公司 | Nanometer antimicrobial polyethylene tube material and preparing method thereof |
| CN104744769A (en) * | 2013-12-30 | 2015-07-01 | 青岛万力科技有限公司 | Antistatic flame retardant polyethylene high polymer material |
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