CN112143102A - Polypropylene plastic for garbage can and processing technology - Google Patents
Polypropylene plastic for garbage can and processing technology Download PDFInfo
- Publication number
- CN112143102A CN112143102A CN202011021299.0A CN202011021299A CN112143102A CN 112143102 A CN112143102 A CN 112143102A CN 202011021299 A CN202011021299 A CN 202011021299A CN 112143102 A CN112143102 A CN 112143102A
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- Prior art keywords
- polypropylene
- wax
- parts
- plastic
- hydrophobic material
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- -1 Polypropylene Polymers 0.000 title claims abstract description 79
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 78
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 78
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 74
- 229920003023 plastic Polymers 0.000 title claims abstract description 67
- 239000004033 plastic Substances 0.000 title claims abstract description 67
- 238000005516 engineering process Methods 0.000 title claims abstract description 16
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 122
- 239000000463 material Substances 0.000 claims abstract description 80
- 239000012462 polypropylene substrate Substances 0.000 claims abstract description 74
- 239000011248 coating agent Substances 0.000 claims abstract description 36
- 238000000576 coating method Methods 0.000 claims abstract description 36
- 239000012790 adhesive layer Substances 0.000 claims abstract description 12
- 239000001993 wax Substances 0.000 claims description 64
- 239000000853 adhesive Substances 0.000 claims description 37
- 230000001070 adhesive effect Effects 0.000 claims description 37
- 239000006255 coating slurry Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 17
- 239000003995 emulsifying agent Substances 0.000 claims description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 13
- XPVIQPQOGTVMSU-UHFFFAOYSA-N (4-acetamidophenyl)arsenic Chemical compound CC(=O)NC1=CC=C([As])C=C1 XPVIQPQOGTVMSU-UHFFFAOYSA-N 0.000 claims description 12
- 229920013640 amorphous poly alpha olefin Polymers 0.000 claims description 12
- 239000004831 Hot glue Substances 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 239000002736 nonionic surfactant Substances 0.000 claims description 9
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 8
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 7
- 239000003365 glass fiber Substances 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000004203 carnauba wax Substances 0.000 claims description 5
- 235000013869 carnauba wax Nutrition 0.000 claims description 5
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 5
- 239000004200 microcrystalline wax Substances 0.000 claims description 5
- 235000019808 microcrystalline wax Nutrition 0.000 claims description 5
- RMTFNDVZYPHUEF-XZBKPIIZSA-N 3-O-methyl-D-glucose Chemical compound O=C[C@H](O)[C@@H](OC)[C@H](O)[C@H](O)CO RMTFNDVZYPHUEF-XZBKPIIZSA-N 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 4
- 230000003078 antioxidant effect Effects 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 4
- 238000000678 plasma activation Methods 0.000 claims description 4
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 4
- 229920000053 polysorbate 80 Polymers 0.000 claims description 4
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 claims description 2
- 239000012298 atmosphere Substances 0.000 claims description 2
- 239000004595 color masterbatch Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- 239000008117 stearic acid Substances 0.000 claims description 2
- 239000010865 sewage Substances 0.000 abstract description 10
- 238000002474 experimental method Methods 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000000203 mixture Substances 0.000 description 7
- 239000002002 slurry Substances 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000001994 activation Methods 0.000 description 3
- 230000004913 activation Effects 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 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 group 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 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 229920006347 Elastollan Polymers 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical group CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229940075507 glyceryl monostearate Drugs 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/123—Treatment by wave energy or particle radiation
-
- 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
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D191/00—Coating compositions based on oils, fats or waxes; Coating compositions based on derivatives thereof
- C09D191/06—Waxes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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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
- 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
- C08J2323/12—Polypropene
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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
- 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
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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
- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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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
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
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- 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
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2491/06—Waxes
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Wood Science & Technology (AREA)
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- Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The application relates to the technical field of plastic products, in particular to polypropylene plastic for a garbage can; the application also relates to a processing technology of the polypropylene plastic. One of the polypropylene plastics for the garbage can comprises a polypropylene substrate, wherein a hydrophobic coating is coated on the polypropylene substrate, and the hydrophobic coating comprises an adhesive layer and a wax-based hydrophobic material adsorbed on the adhesive layer. In this application, the surface of polypropylene substrate has better hydroscopicity, and consequently sewage is difficult at this polypropylene plastics adhesion, makes the garbage bin of making through this polypropylene plastics have more easily by the cleanness, and then has improved the durability of garbage bin.
Description
Technical Field
The application relates to the technical field of plastic products, in particular to polypropylene plastic for a garbage can; the application also relates to a processing technology of the polypropylene plastic for the garbage can.
Background
With the improvement of living standard, the garbage can used for garbage can has gone into thousands of households, and has the important functions of keeping indoor environment clean and maintaining living environment sanitation.
Polypropylene is a nontoxic, odorless, light and easily available material, and is widely applied to the manufacturing of garbage cans. However, polypropylene substrates suffer from the following disadvantages: the surface energy of polypropylene substrate is lower, and its hydrophilicity is better, and the contact angle with water is generally at 85 ~ 90, therefore the easy adhesion of sewage in the garbage bin is on the surface of polypropylene substrate, leads to the garbage bin to wash more difficult on the one hand, and on the other hand also leads to the pollutant in the sewage to permeate the lateral wall of garbage bin easily, leads to the lateral wall of garbage bin to be damaged or pollute.
Disclosure of Invention
To the not enough of prior art existence, at first, this application provides a polypropylene plastic for garbage bin, and sewage is difficult for the surface adhesion at this material, and then makes the garbage bin that makes through this polypropylene plastic more easily by clean, and then has improved the durability of garbage bin.
Secondly, this application provides a processing technology for the polypropylene plastics of garbage bin for processing above-mentioned polypropylene plastics, the processing quality is good.
The first purpose of the application is realized by the following technical scheme: the polypropylene plastic for the garbage can comprises a polypropylene substrate, wherein the polypropylene substrate comprises the following components in parts by weight:
polypropylene master batch: 120-150 parts;
talc powder: 20-30 parts of a solvent;
color master batch: 2.5-5 parts;
the hydrophobic coating comprises an adhesive layer coated on the polypropylene substrate and a wax-based hydrophobic material adsorbed on the adhesive layer.
The polypropylene substrate is light and thin as a whole, has low density, good tensile strength and rigidity, but poor impact resistance, and can be made of high-strength materials such as ABS resin and the like to form certain protection on the polypropylene substrate on the outer side. The two components supplement each other, so that the manufactured garbage can has both strength and portability.
The hydrophobic coating can make the surface of the polypropylene substrate hydrophobic, and increase the contact angle between the polypropylene surface and water. Therefore, after the hydrophobic coating is coated, sewage is not easy to be retained on the wall of the polypropylene substrate, and the residual sewage in the garbage can be conveniently poured out when garbage is poured; after the garbage can is flushed, the residual water amount is less, so that the phenomenon that sewage is remained in the garbage can and permeates into the side wall of the garbage can to cause damage or pollution to the side wall of the garbage can is reduced.
The hydrophobic coating is made of wax-based hydrophobic material, and the wax-based hydrophobic material is adhered to the surface of the polypropylene through an adhesive. Firstly, the wax-based hydrophobic material is simple to process, wide in raw material source and low in price, and has better environmental protection property because the wax-based hydrophobic material does not contain fluorine. Secondly, in the wax-based hydrophobic material, an uneven particle structure is formed on the surface of a polypropylene substrate, so that the contact angle of water drops adhered to the surface of polypropylene can be increased. In addition, after the wax-based hydrophobic material forms a granular structure, the wax-based hydrophobic material is not easy to generate too rough hand feeling, has better wear resistance, and still has better hydrophobic effect after long-term use under the condition of not suffering severe wear.
The adhesive can be used for adhering the wax-based hydrophobic material to the surface of the polypropylene substrate. Because the surface adhesion performance of the wax-based hydrophobic material is generally poor, the wax-based hydrophobic material can be more effectively adhered to a polypropylene substrate by adopting the adhesive to form a stable and long-acting hydrophobic structure, and the wax-based hydrophobic material is not easy to fall off from the polypropylene substrate. The talcum powder is added into the polypropylene substrate, so that the strength and the mechanical property of the polypropylene substrate are improved, and the adhesive strength of the adhesive on the surface of the polypropylene substrate is improved.
Above-mentioned material combined action can form the hydrophobic structure who stably gives on polypropylene substrate surface for the polypropylene substrate has better hydrophobic property, and then is convenient for clean the garbage bin, reduces the adhesion of sewage on the garbage bin inner wall.
The present application may be further configured in a preferred example to: the wax-based hydrophobic material specifically comprises the following components in parts by mass:
microcrystalline wax: 12-40 parts;
carnauba wax: 8-25 parts.
After the microcrystalline wax and the carnauba wax are compounded and a hydrophobic material is formed on the surface of the polypropylene, a convex structure with unevenness and disorder can be formed, so that a better hydrophobic effect can be provided.
The present application may be further configured in a preferred example to: the adhesive comprises the following components in parts by mass:
polyurethane elastomer: 7-20 parts of a solvent;
APAO hot melt adhesive: 16 to 35 parts by weight of
Antioxidant: 0.02-0.1 part;
polyvinyl alcohol: 2-10 parts.
In the technical scheme, the APAO hot melt adhesive is an adhesive with a good adhesion effect on low-polarity materials, and can well adhere the wax-based hydrophobic material and the polypropylene substrate together. The polyurethane elastomer has a strong bonding effect, can be used as a reinforcing agent to enhance the bonding force of the APAO hot melt adhesive, and further enables the connection between the hydrophobic coating and the polypropylene substrate to be tighter. In the system, polyvinyl alcohol can be crosslinked with a polyurethane elastomer and an APAO hot melt adhesive and can adsorb wax-based hydrophobic materials and polypropylene through dipolar interaction, so that the polyvinyl alcohol has better crosslinking performance, is favorable for improving the strength of the adhesive after being adhered and improves the wear resistance of the hydrophobic coating. Meanwhile, the polyvinyl alcohol also has a certain emulsifying effect, and the fluidity and the uniformity of the materials can be improved.
The present application may be further configured in a preferred example to: the adhesive also comprises 1.2-2.8 parts by mass of a silane coupling agent and 2-6 parts by mass of nano glass fiber.
The nano glass fiber can play a role in positioning and anchoring in the adhesive, and the mechanical property of the adhesive is improved. An anchoring point can be formed on the surface of the nano glass fiber through the silane coupling agent, so that the polyurethane elastomer, the APAO hot melt adhesive and the nano glass fiber are crosslinked to form a net-shaped stable structure, and the bonding strength and the wear resistance of the formed hydrophobic coating are improved. In addition, silane coupling also contributes to further enlarging the surface of the plastic polypropylene substrate and improving the hydrophobic property of the coating.
The present application may be further configured in a preferred example to: the adhesive also comprises 1-5 parts by mass of a nonionic surfactant.
The nonionic surfactant is mixed with the polyurethane elastomer and the APAO hot melt adhesive for use, so that on one hand, the adhesive force of the polyurethane elastomer and the APAO hot melt adhesive can be increased, and the wax-based hydrophobic material can be more firmly adhered to the polypropylene plastic. On the other hand, the active groups in the adhesive can be blocked, so that the water absorption of the active groups on the adhesive is reduced, and the hydrophobic property of the hydrophobic coating is further improved.
The second invention purpose of this application is realized through following technical scheme: a processing technology for processing the polypropylene plastic for the garbage can comprises the following steps:
s1, processing the polypropylene substrate by a melt injection molding method, and activating one side of the polypropylene substrate, which is required to be coated with the hydrophobic coating;
s2, coating the adhesive on the surface of a polypropylene substrate;
s3, preparing the wax-based hydrophobic material into coating slurry, immersing the plastic polypropylene substrate into the coating slurry, and enabling the wax-based hydrophobic material in the coating slurry to be adsorbed on the surface of the plastic polypropylene substrate;
s4, drying the polypropylene substrate treated in the step S3 at 30-40 ℃ for 80-150 min;
wherein, in step S3, the preparation method of the coating slurry is as follows:
s3-1, preparing wax-based hydrophobic material into powder;
s3-2, adding the powder prepared in the step S3-1 into water, heating to 80-90 ℃, adding an emulsifier, and fully and uniformly mixing to obtain a hydrophobic material emulsion;
s3-3, cooling the emulsion in the step S3-2 to 15-25 ℃ at the speed of 10-24 ℃/min to obtain coating slurry.
In the technical scheme, the polypropylene substrate is activated firstly, and because the adhesion of the polypropylene substrate is poor, the adsorption effect of the polypropylene substrate and the adhesive is promoted after the activation treatment, so that the hydrophobic coating has stronger adhesion performance on the surface of the polypropylene substrate and better wear resistance.
The wax-based hydrophobic material is prepared into powder and then prepared into slurry, and then the slurry is coated on the surface of the polypropylene substrate. The slurry is obtained by preparing the wax-based hydrophobic material into powder and cooling the powder after emulsification in water, and has a stable and uniform emulsification structure on the one hand, and experiments show that the performance of the wax-based hydrophobic material cannot be affected by the introduction of a small amount of emulsifier, and meanwhile, the emulsifier is used as a surfactant, so that the adsorption capacity between the wax-based hydrophobic material and an adhesive can be improved, the wear resistance of a hydrophobic coating can be further improved, the uniformity of the coating slurry can be improved, and the hydrophobic performance of the prepared polypropylene substrate of the garbage can be further improved.
After evenly coating the surface of garbage bin polypropylene substrate with the coating slurry, dry at low temperature, the particle property of protection wax base hydrophobic material is stable on the one hand, and at high temperature, the wax base hydrophobic material may sublimate or slightly melt, causes the hydrophobic coating structure on surface to take place certain change, and the fine protruding structure that forms is joined in marriage and is destroyed, and then leads to hydrophobic performance to descend. Through the technical scheme, the hydrophobic coating with a better effect can be obtained, and a better hydrophobic effect can be obtained.
The present application may be further configured in a preferred example to: in step S3-1, the powder is prepared as follows:
s3-1-1, dissolving the wax-based hydrophobic material in a mixed solution of water and methyl pyrrolidone, heating and fully and uniformly mixing to obtain a first mixed solution;
s3-1-2, cooling the first mixed solution obtained in the step S3-1-1 to room temperature, filtering to remove liquid, and keeping filter residue;
s3-1-3, drying and dehydrating the filter residue obtained in the step S3-1-2, crushing the filter residue, and sieving the crushed filter residue with a 200-mesh sieve to obtain powder;
wherein, in the step S3-1-1, the volume ratio of the water to the methyl pyrrolidone is 1 (0.12-0.2).
The water and the methyl pyrrolidone are mixed, so that the solubility of the wax-based hydrophobic material can be increased, and the wax-based hydrophobic material is uniformly dispersed after heating and mixing. Then cooling and separating out the wax-based hydrophobic material, and crystallizing. At the moment, a plurality of different wax-based hydrophobic materials are uniformly mixed together to form a more uniform composite system, and uniform particles can be formed in the subsequent drying and crushing processes. After the powder is prepared into the coating slurry, the coating slurry can be more uniform, and is not easy to settle or aggregate in the production process, so that the coating slurry is easier to store, and the processing process integrity and stability are improved, so that the hydrophobic property of the polypropylene plastic obtained by processing is improved.
The present application may be further configured in a preferred example to: in step S3-2, the emulsifier is selected from any one of methyl glucose half-stearic acid, tween-80, span-80, sodium stearate and sodium oleate, or a compound system formed by any two or more of the above materials, and the addition amount of the emulsifier is 2-15% of the mass of the wax-based hydrophobic material.
The emulsifier is selected, so that the formed coating slurry is more uniform in overall texture, and the powder can be uniformly distributed in the slurry and is not easy to agglomerate or aggregate, so that the slurry is convenient to store. Meanwhile, after the coating slurry is coated on the surface of a polypropylene substrate, the emulsifier and the wax-based hydrophobic material form a film together, so that the hydrophobic effect of the hydrophobic coating after film formation can be further improved.
The present application may be further configured in a preferred example to: in step S4, the polypropylene substrate is dried in a mixed gas atmosphere of ammonia and nitrogen, and the volume ratio of ammonia to nitrogen is (0.14-0.2): 1.
In the technical scheme, the coated hydrophobic coating is dried by ammonia gas, and the ammonia gas can assist the hydrophobic coating to form a more uniform structure in the drying process, so that the hydrophobic property of the hydrophobic coating is further improved.
The present application may be further configured in a preferred example to: in step S1, the polypropylene is activated by plasma activation.
The surface of the polypropylene is activated by adopting a plasma activation method, the process is simple and efficient, the method is suitable for the shape of the polypropylene substrate, and the interior of the polypropylene substrate can be fully and effectively activated.
In summary, the present application includes at least one of the following beneficial technical effects:
1. in this application, provide a polypropylene plastics for plastic garbage bin, through coating hydrophobic coating on the polypropylene substrate, make the surface of polypropylene substrate have hydrophobic property, and then make this polypropylene plastics have hydrophobicity, help reducing sewage and remain on the garbage bin section of thick bamboo wall and then lead to the garbage bin to pollute or be corroded.
2. In the application, the polypropylene substrate is treated by adopting a method of activating, coating and drying, so that a more uniform hydrophobic coating is formed, and the hydrophobic property of the polypropylene substrate is further improved.
Detailed Description
The present application will be described in further detail with reference to examples and comparative examples.
Example 1, a polypropylene plastic for a trash can, comprising a polypropylene substrate. The polypropylene substrate is coated on its inner surface with a hydrophobic coating. The hydrophobic coating comprises an adhesive layer coated on a polypropylene substrate and a wax-based hydrophobic material adsorbed on the adhesive layer. The processing technology of the polypropylene plastic comprises the following steps:
s1, respectively processing polypropylene substrates by a melt injection molding method, and activating one side of the polypropylene substrate, which is required to be coated with the hydrophobic coating;
s2, coating the adhesive on the surface of a polypropylene substrate;
s3, preparing the wax-based hydrophobic material into coating slurry, immersing the polypropylene substrate into the coating slurry for 5min, and enabling the wax-based hydrophobic material in the coating slurry to be adsorbed on the surface of the plastic polypropylene substrate;
s4, under the protection of nitrogen, drying the polypropylene substrate treated in the step S3 for 150min at 40 ℃.
Wherein, step S1 is specifically as follows: 150kg of polypropylene master batch, 20kg of talcum powder and 2.5kg of master batch are fully and uniformly mixed, heated to 170 ℃ to melt the mixture, and then extruded and injection molded by a single screw extruder, wherein the temperature in the screw is set in sections, and the temperature from the feeding end to the extruding end is 185 ℃, 220 ℃, 205 ℃ and the mold temperature is 60 ℃.
When the polypropylene substrate is activated, the polypropylene is activated by adopting a plasma activation method, the activation power is 45W, the treatment time is 8s, the pressure is 1.0torr, and the frequency is 100 kHz.
In step S2, the adhesive is formulated by: polyurethane elastomer: 15 kg; APAO hot melt adhesive: 20 kg; antioxidant: 0.5 kg; polyvinyl alcohol: 6 kg. Mixing the above materials uniformly, heating to 160 deg.C, melting at 45.5mg/cm2Is coated on the surface of a plastic polypropylene substrate.
Wherein the polyurethane elastomer is a polyurethane elastomer produced by Bassfugen company with the model number of Elastollan 1160A 13P 000, the APAO hot melt adhesive is produced by German winning and creating industry group, and the antioxidant is antioxidant 1790.
Step S3 specifically includes the following steps:
s3-1, preparing wax-based hydrophobic material into powder;
s3-2, adding the powder prepared in the step S3-1 into 75kg of water, heating to 90 ℃, adding an emulsifier prepared by tween-80 and sodium stearate in a mass ratio of 1:0.6, and stirring to be fully and uniformly mixed to obtain a hydrophobic material emulsion, wherein the adding amount of the emulsifier is 2.96 kg;
s3-3, cooling the emulsion in the step S3-2 to 25 ℃ at the speed of 10 ℃/min to obtain coating slurry.
Wherein S3-1 is specifically as follows:
s3-1-1: taking 12kg of microcrystalline wax and 25kg of carnauba wax as wax-based hydrophobic materials, crushing and dispersing the wax-based hydrophobic materials into a mixed system formed by 45L of water and 9L of methyl pyrrolidone, and heating to 160 ℃ to form a stable system;
s3-1-2, cooling the first mixed solution in the step S3-1-1 to room temperature at the speed of 5 ℃/min, filtering, and keeping filter residues;
s3-1-3, placing the filter residue obtained in the step S3-1-2 in a vacuum drying oven, drying and dehydrating at 60 ℃, and then screening by a vibrating screen in a 200-mesh mode to obtain powder.
Examples 2 to 14, a polypropylene plastic for garbage cans, are different from example 1 in that the composition of the adhesive is changed. The formulation of the adhesive is shown in table 1.
Table 1: formulations of the Adhesives of examples 1-14
In the above examples, the silane coupling agent was of type KH570, and the nonionic surfactant was glyceryl monostearate.
Example 18, a polypropylene plastic for trash cans, differs from example 8 in that the non-ionic surfactant is span 60.
Example 19, a polypropylene plastic for trash cans, differs from example 8 in that the non-ionic surfactant is polyoxyethylene 40 stearate.
Examples 20 to 29, a polypropylene plastic for garbage cans, was different from example 8 in that the composition of the wax-based hydrophobic material was adjusted as shown in table 2.
Table 2: example 17-26 formulation of wax-based hydrophobic Material
Example 30, a polypropylene plastic for garbage can, different from example 8 in that 120kg of polypropylene master batch, 30kg of talc and 5kg of master batch were used as raw materials in processing of polypropylene base material in step S1 example 31, and a polypropylene plastic for garbage can, different from example 8 in that 30mg/cm of adhesive was coated in step S22。
Example 32, a polypropylene plastic for trash cans, differs from example 8 in that the adhesive is coated in an amount of 60mg/cm in step S22。
Example 33, a polypropylene plastic for garbage can, differs from example 8 in that, in step S4, nitrogen gas is not used for protection, but a mixed gas of ammonia gas and nitrogen gas is introduced, wherein the volume ratio of ammonia gas and nitrogen gas is 0.14: 1.
Example 34, a polypropylene plastic for trash cans, differs from example 33 in that the volume ratio of ammonia to nitrogen is 0.2: 1.
Example 35, a polypropylene plastic for trash cans, differs from example 33 in the volume ratio of ammonia to nitrogen of 0.3: 1.
Example 36, a polypropylene plastic for trash cans, differs from example 33 in that the polypropylene substrate is dipped in the coating slurry for 10min in step S3.
Example 37, a polypropylene plastic for trash cans, differs from example 33 in that the polypropylene substrate is dipped in the coating slurry for 3min in step S3.
Example 38, a polypropylene plastic for trash cans, differs from example 33 in that the polypropylene substrate is immersed in the coating slurry for 15min in step S3.
Example 39, a polypropylene plastic for trash cans, differs from example 33 in that a wax-based hydrophobic material is dispersed in 48L of water and 6L of methyl pyrrolidone in step S3-1-1.
Example 40, a polypropylene plastic for trash cans, differs from example 33 in that a wax-based hydrophobic material is dispersed in 54L of water in step S3-1-1.
Example 41, a polypropylene plastic for garbage can, differs from example 33 in that the emulsifier is added in an amount of 0.74kg in step S3-1-1.
Example 42, a polypropylene plastic for garbage can, differs from example 33 in that the emulsifier is added in an amount of 5.55kg in step S3-1-1.
Example 43 a polypropylene plastic for trash cans, different from example 33, in that the emulsifier is a complex system of methyl glucose hemistearic acid and sodium oleate in a ratio of 1:0.6 in step S3-1-1.
Example 44, a polypropylene plastic for garbage can, differs from example 33 in that in step S3-1-1, the emulsifier is a complex system of methyl glucose hemistearic acid, sodium stearate and tween-80 in a ratio of 1:2.4: 3.8.
Example 45, a polypropylene plastic for trash cans, was different from example 44 in that the cooling rate was 24 c/min and the end point temperature was 15 c in step S3-3.
For the above examples, the following comparative examples were set up for comparison.
Comparative example 1, a polypropylene plastic for a trash can, comprising a polypropylene substrate. In the processing process of the polypropylene substrate, 150kg of polypropylene master batch, 20kg of talcum powder and 2.5kg of master batch are fully and uniformly mixed, heated to 170 ℃ to melt the mixture, and then extruded and molded by a single-screw extruder, wherein the temperature in the screw is set in a segmented manner, and the temperature from a feeding end to an extrusion end is 185 ℃, 220 ℃, 205 ℃ and the mold temperature is 60 ℃.
Comparative example 2, a polypropylene plastic for trash cans, differs from example 1 in that the polypropylene substrate is coated with only an adhesive layer. In the processing, step S3 is omitted.
Comparative example 3, a polypropylene plastic for trash cans, is different from example 1 in that step S2 is omitted.
Comparative example 4, a polypropylene plastic for trash cans, is different from example 1 in that the polypropylene substrate is not subjected to the activation treatment in step S1.
For the above examples and comparative examples, the following experiments were carried out to determine the properties thereof.
Experiment 1, hydrophobic property determination: injection molding to 9cm on the prepared polypropylene substrate2The contact angle of the square sample is measured by referring to the method in the national standard GB/T30693-2014.
Experiment 2, determination of wear resistance: adopting the abrasion tester to carry out abrasion simulation treatment on the material, and carrying out experiment load: 0N, rotation speed: 20rpm, reciprocating motion formed: 2.5mm, number of repetitions: 50 times. After completion, the contact angle of the surface with water was measured by the method in experiment 1.
The results of experiment 1 conducted for examples 1 to 3 and comparative examples 1 to 4 are shown in Table 3.
Table 3: hydrophobicity comparison of examples 1-3 with comparative examples 1-4
Comparing the examples and the comparative examples, it can be seen that the contact angle between the surface of the polypropylene substrate and water can be greatly increased by coating the adhesive and adsorbing the wax-based hydrophobic material on the adhesive, which indicates that the wax-based hydrophobic material indeed plays a role in increasing the hydrophobicity of the polypropylene substrate.
Further, experiments 1 and 2 were performed on examples 1 to 14, and the results are shown in table 4.
Table 4: tables for measuring hydrophobic Properties of examples 1 to 19
It can be seen from comparison of examples 1-3 and examples 15-17 that a system formed by a polyurethane elastomer, an APAO hot melt adhesive and polyvinyl alcohol can sufficiently adsorb a wax-based hydrophobic material, and further a more complete hydrophobic film is formed on the surface. In the method, both the APAO and the polyurethane elastomer have good viscosity, and can be adsorbed on the surface of polypropylene, so that the polypropylene can better adsorb the wax-based hydrophobic material. Meanwhile, the polyurethane elastomer has better fluidity, so that the adhesive is more uniform. The polyvinyl alcohol has good coupling performance, not only can improve the strength and the wear resistance of the adhesive, but also is beneficial to improving the effect of the adhesive for adsorbing the wax-based hydrophobic material, and the loss of any one of the three components can cause the reduction of the hydrophobic performance.
After the nano glass fiber and the silane coupling agent are added into the system, on one hand, the nano glass fiber can play a role in anchoring, and forms a stable net-shaped connecting structure together with the silane coupling agent and other adhesives, so that the bonding strength between the wax-based hydrophobic material and the adhesives is improved, and the wear resistance of the hydrophobic coating is further improved. The addition of the nonionic surfactant can further adsorb the wax-based hydrophobic material through the amphiphilic action of the nonionic surfactant, greatly improve the adsorption effect of the wax-based hydrophobic material, and block the hydrophilic end group in the adhesive, so as to improve the hydrophobic property.
In examples 18 and 19, the effect of increasing hydrophobicity was improved by replacing different nonionic surfactants.
Further, the best example 8 was selected from the above examples and compared with examples 20 to 29, and the results are shown in table 5.
Table 5: example 8 and examples 20 to 29 Experimental results of experiments 1 and 2
In the above experiments, the choice of wax-based binder was adjusted. According to the data, when the microcrystalline wax and the carnauba wax are selected to be compounded, compared with other wax-based hydrophobic materials, the wax-based hydrophobic material has better hydrophobic property and wear resistance. The addition of paraffin wax, although improving the hydrophobic properties and increasing the contact angle, has poor abrasion resistance, probably due to the low adhesion of paraffin wax itself.
Further, examples 31 to 45 were subjected to experiment 1 and experiment 2, and the results are shown in table 6.
Table 6: example 8 and examples 31 to 45 Experimental results of experiment 1 and experiment 2
According to the experimental data, in the embodiment, the proportion of the emulsifier in the embodiment 44 is selected, so that a more excellent dispersing effect can be achieved, the wax-based hydrophobic material is more uniformly distributed on the surface of the plastic, and the hydrophobic effect and the wear resistance of the surface of the polypropylene substrate are further improved. In terms of the dipping time, when the dipping time reaches 5min, the hydrophobic property is maximized, possibly in relation to the adsorption amount of the wax-based hydrophobic material on the adhesive layer. When the wax-based hydrophobic material is less adsorbed on the adhesive layer, a densely-distributed granular structure cannot be formed, and further the hydrophobic property is poor. However, when the wax-based hydrophobic material adsorbs more on the adhesive layer, gaps between the granular structures are easily filled, and the contact angle is also reduced.
In conclusion, the polypropylene plastic for the garbage can and the processing technology thereof are provided in the application, the contact angle between the surface of the polypropylene substrate and water is increased through the hydrophobic coating, and then the adhesion of sewage on the surface of the garbage can is reduced by improving the hydrophobicity of the surface of the garbage can, so that the garbage can is more convenient to clean.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A polypropylene plastic for a garbage can is characterized in that: the polypropylene base material comprises the following components in parts by weight:
polypropylene master batch: 120-150 parts;
talc powder: 20-30 parts of a solvent;
color master batch: 2.5-5 parts;
the hydrophobic coating comprises an adhesive layer coated on the polypropylene substrate and a wax-based hydrophobic material adsorbed on the adhesive layer.
2. The polypropylene plastic for garbage cans as claimed in claim 1, wherein: the wax-based hydrophobic material specifically comprises the following components in parts by mass:
microcrystalline wax: 12-40 parts;
carnauba wax: 8-25 parts.
3. The polypropylene plastic for garbage cans as claimed in claim 1, wherein: the adhesive comprises the following components in parts by mass:
polyurethane elastomer: 7-20 parts of a solvent;
APAO hot melt adhesive: 16 to 35 parts by weight of
Antioxidant: 0.02-0.1 part;
polyvinyl alcohol: 2-10 parts.
4. The polypropylene plastic for garbage cans as claimed in claim 3, wherein: the adhesive also comprises 1.2-2.8 parts by mass of a silane coupling agent and 2-6 parts by mass of nano glass fiber.
5. The polypropylene plastic for garbage cans as claimed in claim 4, wherein: the adhesive also comprises 1-5 parts by mass of a nonionic surfactant.
6. A process for processing a polypropylene plastic for trash cans as claimed in claims 1-5, wherein: the method comprises the following steps:
s1, respectively processing polypropylene substrates by a melt injection molding method, and activating one side of the polypropylene substrate, which is required to be coated with the hydrophobic coating;
s2, coating the adhesive on the surface of a polypropylene substrate;
s3, preparing the wax-based hydrophobic material into coating slurry, immersing the plastic polypropylene substrate into the coating slurry, and enabling the wax-based hydrophobic material in the coating slurry to be adsorbed on the surface of the plastic polypropylene substrate;
s4, drying the polypropylene substrate treated in the step S3 at 30-40 ℃ for 80-150 min;
wherein, in step S3, the preparation method of the coating slurry is as follows:
s3-1, preparing wax-based hydrophobic material into powder;
s3-2, adding the powder prepared in the step S3-1 into water, heating to 80-90 ℃, adding an emulsifier, and fully and uniformly mixing to obtain a hydrophobic material emulsion;
s3-3, cooling the emulsion in the step S3-2 to 15-25 ℃ at the speed of 10-24 ℃/min to obtain coating slurry.
7. The processing technology of polypropylene plastic for garbage cans as claimed in claim 6, wherein the processing technology comprises the following steps: in step S3-1, the powder is prepared as follows:
s3-1-1, dissolving the wax-based hydrophobic material in a mixed solution of water and methyl pyrrolidone, heating and fully and uniformly mixing to obtain a first mixed solution;
s3-1-2, cooling the first mixed solution obtained in the step S3-1-1 to room temperature, filtering to remove liquid, and keeping filter residue;
s3-1-3, drying and dehydrating the filter residue obtained in the step S3-1-2, crushing the filter residue, and sieving the crushed filter residue with a 200-mesh sieve to obtain powder;
wherein, in the step S3-1-1, the volume ratio of the water to the methyl pyrrolidone is 1 (0.12-0.2).
8. The processing technology of polypropylene plastic for garbage cans as claimed in claim 6, wherein the processing technology comprises the following steps: in step S3-2, the emulsifier is selected from any one of methyl glucose half-stearic acid, tween-80, span-80, sodium stearate and sodium oleate, or a compound system formed by any two or more of the above materials, and the addition amount of the emulsifier is 2-15% of the mass of the wax-based hydrophobic material.
9. The processing technology of polypropylene plastic for garbage cans as claimed in claim 6, wherein the processing technology comprises the following steps: in step S4, the polypropylene substrate is dried in a mixed gas atmosphere of ammonia and nitrogen, and the volume ratio of ammonia to nitrogen is (0.14-0.2): 1.
10. The processing technology of polypropylene plastic for garbage cans as claimed in claim 6, wherein the processing technology comprises the following steps: in step S1, the polypropylene is activated by plasma activation.
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| CN110591270A (en) * | 2019-10-08 | 2019-12-20 | 天津瑞杰塑料制品有限公司 | Self-cleaning polypropylene plastic barrel and preparation method thereof |
| CN111071659A (en) * | 2019-11-28 | 2020-04-28 | 江苏天楹环保能源成套设备有限公司 | Hydrophobic oleophobic antibiotic lightweight garbage bin |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113564737A (en) * | 2021-07-15 | 2021-10-29 | 杭州恒吉新材料科技有限公司 | Super-hydrophobic polyester yarn and preparation method thereof |
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Denomination of invention: A Polypropylene Plastic for Garbage Can and Its Processing Technology Granted publication date: 20220624 Pledgee: Industrial Bank Co.,Ltd. Shanghai Shizhong sub branch Pledgor: Shanghai Yacheng plastic products Co.,Ltd. Registration number: Y2024310000210 |
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