CN115160694B - Water pan material for refrigerator and preparation method thereof - Google Patents
Water pan material for refrigerator and preparation method thereof Download PDFInfo
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- CN115160694B CN115160694B CN202210895577.8A CN202210895577A CN115160694B CN 115160694 B CN115160694 B CN 115160694B CN 202210895577 A CN202210895577 A CN 202210895577A CN 115160694 B CN115160694 B CN 115160694B
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- refrigerator
- flame retardant
- polyvinyl chloride
- injection molding
- glass fiber
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000000463 material Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title abstract description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 50
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000003063 flame retardant Substances 0.000 claims abstract description 45
- 239000003365 glass fiber Substances 0.000 claims abstract description 33
- 238000001746 injection moulding Methods 0.000 claims abstract description 32
- -1 polypropylene Polymers 0.000 claims abstract description 30
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002131 composite material Substances 0.000 claims abstract description 27
- 239000000945 filler Substances 0.000 claims abstract description 27
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 27
- 239000011574 phosphorus Substances 0.000 claims abstract description 27
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 26
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 26
- 239000004743 Polypropylene Substances 0.000 claims abstract description 25
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 25
- 229920001155 polypropylene Polymers 0.000 claims abstract description 25
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 239000000314 lubricant Substances 0.000 claims abstract description 18
- 238000001125 extrusion Methods 0.000 claims abstract description 12
- 239000008187 granular material Substances 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 24
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 16
- 239000011256 inorganic filler Substances 0.000 claims description 15
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 15
- 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 9
- 239000002245 particle Substances 0.000 claims description 9
- 238000005469 granulation Methods 0.000 claims description 8
- 230000003179 granulation Effects 0.000 claims description 8
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 claims description 7
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 claims description 7
- 238000006116 polymerization reaction Methods 0.000 claims description 7
- 229910019142 PO4 Inorganic materials 0.000 claims description 6
- 239000010452 phosphate Substances 0.000 claims description 6
- XMNDMAQKWSQVOV-UHFFFAOYSA-N (2-methylphenyl) diphenyl phosphate Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C=CC=CC=1)OC1=CC=CC=C1 XMNDMAQKWSQVOV-UHFFFAOYSA-N 0.000 claims description 5
- 239000004114 Ammonium polyphosphate Substances 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 235000019826 ammonium polyphosphate Nutrition 0.000 claims description 5
- 229920001276 ammonium polyphosphate Polymers 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 239000010456 wollastonite Substances 0.000 claims description 4
- 229910052882 wollastonite Inorganic materials 0.000 claims description 4
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 4
- 229940037312 stearamide Drugs 0.000 claims description 3
- 239000005696 Diammonium phosphate Substances 0.000 claims description 2
- 229920000877 Melamine resin Polymers 0.000 claims description 2
- 229920000388 Polyphosphate Polymers 0.000 claims description 2
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 2
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 2
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 2
- 235000019838 diammonium phosphate Nutrition 0.000 claims description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 2
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 2
- 239000006012 monoammonium phosphate Substances 0.000 claims description 2
- 239000001205 polyphosphate Substances 0.000 claims description 2
- 235000011176 polyphosphates Nutrition 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000155 melt Substances 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
- C08K2003/323—Ammonium polyphosphate
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Abstract
The application discloses water collector material for refrigerator and preparation method thereof, water collector material for refrigerator includes: the water pan material for the refrigerator is prepared by limiting the mass ratio of the phosphorus flame retardant to the polyvinyl chloride, adding the composite filler, limiting the mass ratio of glass fiber to calcium carbonate in the composite filler, adding the polypropylene resin, the compatilizer and the lubricant, and adopting a specific melt extrusion and injection molding process, so that the problems of poor flame retardance, poor mechanical strength and toughness and water pan falling off of the water pan for the refrigerator are solved.
Description
Technical Field
The application relates to the technical field of high polymer materials, in particular to a water pan material for a refrigerator and a preparation method thereof.
Background
In order to prevent the refrigerator from overflowing to cause potential safety hazard, a water receiving tray is usually arranged at the bottom of the back of the refrigerator, in the compressor chamber or above the compressor. The water receiving tray of the refrigerator is also called as a water storage box and is used for receiving condensed water generated by freezing in a refrigerating chamber of the refrigerator, and in order to save space, the water receiving tray is generally fixed on a metal bracket of a compressor through a buckle structure, so that in order to prevent the water receiving tray from falling off, a water receiving tray material is generally required to have better toughness and higher strength, in addition, the water receiving tray is directly contacted with the compressor, a starter, an overload protector and other electrical appliances are connected in the compressor chamber, if the electrical appliances are directly contacted with water, the electrical appliances are disconnected, so that the water receiving tray is required to be cleaned regularly, and meanwhile, the water receiving tray material is required to have better flame retardance.
The water pan material in the prior art is generally composed of a polypropylene resin material with flame retardance and a flame retardant, wherein the flame retardant for the commonly used polypropylene resin is organic halogen or inorganic phosphorus nitrogen, but the flame retardant grade of the polypropylene resin can be improved by adding more parts of the flame retardant, but the mechanical property of the flame retardant polypropylene resin material can be reduced; in order to save production cost and correspondingly improve mechanical properties of the water receiving disc, the flame retardant grade of the water receiving disc of the refrigerator is generally V2 grade, and the flame retardant property is poor, so that the water receiving disc prepared in the prior art is difficult to have excellent mechanical properties and flame retardant property, and because the refrigerator is long-term power-on equipment, the water receiving disc is fixed on a metal bracket of a compressor through a buckle structure, and high requirements are provided for the flame retardant property and toughness strength of the water receiving disc, so that the flame retardant grade and mechanical property of the water receiving disc are both urgently required to be improved.
Disclosure of Invention
In order to solve the problems that in the prior art, a water pan is in long-term direct contact with a compressor of electrified equipment and is fixed on a metal bracket of the compressor through a buckle structure, the water pan has poor flame retardance and poor mechanical strength and toughness, so that the water pan falls off.
In one embodiment of the invention, the following percentages are by mass: the water pan material for the refrigerator comprises the following components: 40-60% of polypropylene resin, 10-15% of polyvinyl chloride, 5-10% of phosphorus flame retardant, 5-20% of compatilizer, 10-24% of composite filler and 0.5-1.5% of lubricant, wherein the composite filler comprises glass fiber and inorganic filler, and the inorganic filler comprises one of barium sulfate, talcum powder, wollastonite and calcium carbonate;
in one embodiment of the present invention, the polyvinyl chloride has a degree of polymerization of 1000 to 1500;
in one embodiment of the present invention, the phosphorus-based flame retardant comprises one or more of ammonium polyphosphate, melamine polyphosphate, monoammonium phosphate, diammonium phosphate, tolyldiphenyl phosphate, triaryl phosphate;
in one embodiment of the present invention, the mass ratio of the phosphorus flame retardant to polyvinyl chloride is 1:1-3;
in one embodiment of the invention, the compatibilizing agent is maleic anhydride grafted polypropylene;
in one embodiment of the invention, the mass ratio of the glass fiber to the inorganic filler is 1-2.5:1, a step of;
in one embodiment of the invention, the length of the glass fiber is 0.2-0.6mm;
in one embodiment of the present invention, the particle size of the barium sulfate, talcum powder and calcium carbonate is 100nm-5 μm.
The applicant found that when the mass ratio of the phosphorus flame retardant to the polyvinyl chloride is 1:1-3, the prepared water-receiving disc material has excellent flame retardance and mechanical properties (including notch impact strength, tensile strength and bending strength), wherein the phosphorus flame retardant possibly has a short chain molecular structure, and the phosphorus flame retardant and long chain molecules of the polyvinyl chloride polymer are mutually and uniformly distributed in the polypropylene resin to form a crosslinked reticular structure, so that the flame retardance and the mechanical properties of the water-receiving disc material are improved; and when the composite filler consists of glass fiber and inorganic filler, the mass ratio of the glass fiber to the inorganic filler is 1-2.5:1, when the length of the glass fiber is 0.2-0.6mm, the short glass fiber and inorganic filler particles (talcum powder, wollastonite, barium sulfate and calcium carbonate) in the composite filler can be uniformly filled and dispersed in a polypropylene resin crosslinked network structure to form a compact polypropylene resin crosslinked network structure, so that the mechanical strength and flame retardant property of the composite filler are improved, and when the external pressure changes, the polypropylene resin network structure filled with the composite filler is not easy to deform and break, and the composite filler and the inorganic filler have synergistic effect, so that the prepared water-receiving tray material has excellent flame retardant property and mechanical property.
In one embodiment of the present invention, the lubricant comprises one of stearamide, zinc stearate, polyethylene wax.
The invention discloses a preparation method of a water pan material for a refrigerator, which comprises the following steps:
(1) According to the mass percentage, placing the polypropylene resin, the polyvinyl chloride, the phosphorus flame retardant, the compatilizer and the lubricant into a stirrer for stirring to prepare a premix;
(2) The composite filler is placed in another stirrer to be stirred according to the mass percentage, and a filling mixture is prepared;
(3) Feeding the premix prepared in the step (1) into a double-screw extruder from a main feeding port, feeding the filling mixture in the step (2) into the double-screw extruder from a side feeding port, and preparing extrusion granules from the premix and the filling mixture in the double-screw extruder through melt extrusion granulation;
(4) And (3) placing the extruded granules in the step (3) in an injection molding machine, and controlling the injection molding temperature to perform injection molding on the extruded granules to prepare the water pan material for the refrigerator.
In one embodiment of the present invention, the specific step of step (1) includes:
according to the mass percentage, the polypropylene resin, the polyvinyl chloride, the phosphorus flame retardant, the compatilizer and the lubricant are placed into a stirrer to be stirred, the stirring speed is 1000-1500r/min, and the stirring time is 20-30min, so as to prepare a premix;
in one embodiment of the present invention, the specific step of step (2) includes:
according to the mass percentage, the composite filler is placed into another stirrer to be stirred, the stirring speed is 200-500r/min, and the stirring time is 10-20min, so as to prepare a filling mixture;
in one embodiment of the present invention, the specific step of step (3) includes:
feeding the premix prepared in the step (1) into a double-screw extruder from a main feeding port, feeding the filling mixture in the step (2) into the double-screw extruder from a side feeding port, and carrying out melt extrusion granulation on the premix and the filling mixture in the double-screw extruder to prepare extruded granules, wherein the granulating temperature is 200-250 ℃;
in one embodiment of the present invention, the specific step of step (4) includes:
placing the extruded granules in the step (3) into an injection molding machine, and controlling the injection molding temperature to perform injection molding on the extruded granules to prepare the water pan material for the refrigerator, wherein the injection molding temperature is 190-250 ℃.
In summary, the mass ratio of the phosphorus flame retardant to the polyvinyl chloride is defined as 1:1-3, the applicant finds that the two materials have synergistic effect, the notch impact property, tensile strength, bending strength and flame retardant grade of the water pan material for the refrigerator are greatly improved, and meanwhile, the composite filler is added, so that the mass ratio of glass fiber to inorganic filler in the composite filler is defined to be 1-2.5:1, the length of the glass fiber is 0.2-0.6mm, and the mass ratio of the composite filler to the glass fiber is 1:1-3, and the phosphorus flame retardant and the polyvinyl chloride are combined together, so that the water pan material for the refrigerator is prepared through a melt extrusion and injection molding process, and has excellent flame retardance (the flame retardant grade is V0) and mechanical strength, and the reason is probably that the mass ratio is 1-2.5:1 and inorganic filler, the glass fiber with the length of 0.2-0.6mm and inorganic filler particles (talcum powder, wollastonite, barium sulfate and calcium carbonate) can be better dispersed in a polymeric network structure formed by polypropylene resin and polyvinyl chloride, so that the mechanical strength and flame retardant property of the polymeric network structure are further improved.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will become more apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof.
Example 1
(1) According to the mass percentage, 54.5 percent of polypropylene resin, 15 percent of polyvinyl chloride, 5 percent of phosphorus flame retardant, 5 percent of compatilizer and 0.5 percent of lubricant are placed in a stirrer to be stirred at the stirring speed of 1000r/min for 20min, so as to prepare a premix;
(2) According to parts by weight, placing 20% of the composite filler into another stirrer to be stirred, wherein the stirring speed is 200r/min, and the stirring time is 15min, so as to prepare a filling mixture;
(3) Feeding the premix prepared in the step (1) into a double-screw extruder from a main feeding port, feeding the filling mixture in the step (2) into the double-screw extruder from a side feeding port, and carrying out melt extrusion granulation on the premix and the filling mixture in the double-screw extruder to prepare extruded granules, wherein the granulating temperature is 200 ℃;
(4) And (3) placing the extruded granules in the step (3) in an injection molding machine, and controlling the injection molding temperature to perform injection molding on the extruded granules to obtain the water pan material for the refrigerator, wherein the injection molding temperature is 190 ℃.
The polypropylene resin is purchased from Shanghai Ala Biochemical technology Co., ltd, and the melt index is 12g/10min;
the polyvinyl chloride has a polymerization degree of 1500 and is purchased from Hubei Korea chemical Co., ltd;
the phosphorus flame retardant is triaryl phosphate, and is purchased from Zhejiang Wansheng Co., ltd;
the compatilizer is maleic anhydride grafted polypropylene, which is purchased from the company of Ke Aisi chemical Co., ltd;
the composite filler is a compound of glass fiber and barium sulfate, and the mass ratio of the glass fiber to the calcium carbonate is 1:1, a step of;
the length of the glass fiber is 0.5mm, and the glass fiber is purchased from a boulder group;
the particle size of the barium sulfate is 500nm, and the barium sulfate is purchased from the company of the scientific and technological production base of poly-source nano calcium carbonate;
the lubricant is zinc stearate, and the CAS number is 557-05-1.
Example two
(1) According to mass percent, 49% of polypropylene resin, 10% of polyvinyl chloride, 8% of phosphorus flame retardant, 8% of compatilizer and 1% of lubricant are placed in a stirrer to be stirred at the speed of 1200r/min for 25min, so as to prepare a premix;
(2) According to parts by weight, placing 24% of the composite filler into another stirrer to be stirred at the stirring speed of 350r/min for 20min, so as to prepare a filling mixture;
(3) Feeding the premix prepared in the step (1) into a double-screw extruder from a main feeding port, feeding the filling mixture in the step (2) into the double-screw extruder from a side feeding port, and carrying out melt extrusion granulation on the premix and the filling mixture in the double-screw extruder to prepare extruded granules, wherein the granulating temperature is 220 ℃;
(4) Placing the extruded granules in the step (3) into an injection molding machine, and controlling the injection molding temperature to perform injection molding on the extruded granules to prepare the water pan material for the refrigerator, wherein the injection molding temperature is 220 ℃.
The polypropylene resin is purchased from Shanghai Ala Biochemical technology Co., ltd, and the melt index is 12g/10min;
the polyvinyl chloride has a polymerization degree of 1000 and is purchased from Hubei Korea chemical industry Co., ltd;
the phosphorus flame retardant is a compound of phosphate and tolyldiphenyl phosphate, and the mass ratio of the phosphate to the tolyldiphenyl phosphate is 2:1, the phosphorus flame retardant is phosphate and tolyl diphenyl phosphate which are purchased from Zhejiang Wansheng Co., ltd;
the compatilizer is maleic anhydride grafted polypropylene, which is purchased from the company of Ke Aisi chemical Co., ltd;
the composite filler is a compound of glass fiber and talcum powder, and the mass ratio of the glass fiber to calcium carbonate is 1.6:1, a step of;
the length of the glass fiber is 0.2mm, and the glass fiber is purchased from a boulder group;
the particle size of the talcum powder is 500nm, and the talcum powder is purchased from the technology production base company of poly-source nano calcium carbonate;
the lubricant is stearamide, and the CAS number is 124-26-5.
Example III
(1) According to mass percent, 49% of polypropylene resin, 10% of polyvinyl chloride, 10% of phosphorus flame retardant, 10% of compatilizer and 1% of lubricant are placed in a stirrer to be stirred at a stirring speed of 1500r/min for 30min, so as to prepare a premix;
(2) According to parts by weight, placing 20% of the composite filler into another stirrer to be stirred at the stirring speed of 500r/min for 15min, so as to prepare a filling mixture;
(3) Feeding the premix prepared in the step (1) into a double-screw extruder from a main feeding port, feeding the filling mixture in the step (2) into the double-screw extruder from a side feeding port, and carrying out melt extrusion granulation on the premix and the filling mixture in the double-screw extruder to prepare extruded granules, wherein the granulating temperature is 250 ℃;
(4) Placing the extruded granules in the step (3) into an injection molding machine, and controlling the injection molding temperature to perform injection molding on the extruded granules to prepare the water pan material for the refrigerator, wherein the injection molding temperature is 250 ℃.
The polypropylene resin is purchased from Shanghai Ala Biochemical technology Co., ltd, and the melt index is 12g/10min;
the polyvinyl chloride has a polymerization degree of 1500 and is purchased from Hubei Korea chemical Co., ltd;
the phosphorus flame retardant is ammonium polyphosphate, and is purchased from Zhejiang Wansheng Co., ltd;
the compatilizer is maleic anhydride grafted polypropylene, which is purchased from the company of Ke Aisi chemical Co., ltd;
the composite filler is a compound of glass fiber and calcium carbonate, and the mass ratio of the glass fiber to the calcium carbonate is 1:1, a step of;
the length of the glass fiber is 0.6mm, and the glass fiber is purchased from a boulder group;
the particle size of the calcium carbonate is 500nm, and the calcium carbonate is purchased from the company of the scientific and technological production base of poly-source nano calcium carbonate;
the lubricant is polyethylene wax with CAS number 9002-88-4.
Comparative example one
(1) According to mass percent, 49% of polypropylene resin, 3% of polyvinyl chloride, 17% of phosphorus flame retardant, 10% of compatilizer and 1% of lubricant are placed in a stirrer to be stirred at a stirring speed of 1500r/min for 30min, so as to prepare a premix;
(2) According to parts by weight, placing 20% of the composite filler into another stirrer to be stirred at the stirring speed of 500r/min for 15min, so as to prepare a filling mixture;
(3) Feeding the premix prepared in the step (1) into a double-screw extruder from a main feeding port, feeding the filling mixture in the step (2) into the double-screw extruder from a side feeding port, and carrying out melt extrusion granulation on the premix and the filling mixture in the double-screw extruder to prepare extruded granules, wherein the granulating temperature is 250 ℃;
(4) Placing the extruded granules in the step (3) into an injection molding machine, and controlling the injection molding temperature to perform injection molding on the extruded granules to prepare the water pan material for the refrigerator, wherein the injection molding temperature is 250 ℃.
The polypropylene resin is purchased from Shanghai Ala Biochemical technology Co., ltd, and the melt index is 12g/10min;
the polyvinyl chloride has a polymerization degree of 1500 and is purchased from Hubei Korea chemical Co., ltd;
the phosphorus flame retardant is ammonium polyphosphate, and is purchased from Zhejiang Wansheng Co., ltd;
the compatilizer is maleic anhydride grafted polypropylene, which is purchased from the company of Ke Aisi chemical Co., ltd;
the composite filler is a compound of glass fiber and calcium carbonate, and the mass ratio of the glass fiber to the calcium carbonate is 1:1, a step of;
the length of the glass fiber is 0.6mm, and the glass fiber is purchased from a boulder group;
the particle size of the calcium carbonate is 500nm, and the calcium carbonate is purchased from the company of the scientific and technological production base of poly-source nano calcium carbonate;
the lubricant is polyethylene wax with CAS number 9002-88-4.
Comparative example two
(1) According to mass percent, 49% of polypropylene resin, 10% of polyvinyl chloride, 10% of phosphorus flame retardant, 10% of compatilizer and 1% of lubricant are placed in a stirrer to be stirred at a stirring speed of 1500r/min for 30min, so as to prepare a premix;
(2) According to parts by weight, placing 20% of the composite filler into another stirrer to be stirred at the stirring speed of 500r/min for 15min, so as to prepare a filling mixture;
(3) Feeding the premix prepared in the step (1) into a double-screw extruder from a main feeding port, feeding the filling mixture in the step (2) into the double-screw extruder from a side feeding port, and carrying out melt extrusion granulation on the premix and the filling mixture in the double-screw extruder to prepare extruded granules, wherein the granulating temperature is 250 ℃;
(4) Placing the extruded granules in the step (3) into an injection molding machine, and controlling the injection molding temperature to perform injection molding on the extruded granules to prepare the water pan material for the refrigerator, wherein the injection molding temperature is 250 ℃.
The polypropylene resin is purchased from Shanghai Ala Biochemical technology Co., ltd, and the melt index is 12g/10min;
the polyvinyl chloride has a polymerization degree of 1500 and is purchased from Hubei Korea chemical Co., ltd;
the phosphorus flame retardant is ammonium polyphosphate, and is purchased from Zhejiang Wansheng Co., ltd;
the compatilizer is maleic anhydride grafted polypropylene, which is purchased from the company of Ke Aisi chemical Co., ltd;
the composite filler is calcium carbonate;
the particle size of the calcium carbonate is 500nm, and the calcium carbonate is purchased from the company of the scientific and technological production base of poly-source nano calcium carbonate;
the lubricant is polyethylene wax with CAS number 9002-88-4.
Performance test:
the mechanical properties and the flame retardant grades of the water pan materials for the refrigerator prepared in the first to third embodiments and the first to second comparative embodiments are respectively tested. The mechanical property test comprises tensile strength (the test standard is national standard GB 1040), bending strength (the test standard is national standard GB 9341) and notch impact strength (the test standard is national standard GB 1843); flame retardant rating test the flame retardant rating test was conducted according to UL94 test standards, and the test results are shown in table 1:
table 1: examples one to three and comparative examples one to two were prepared to obtain the results of performance test of the material for the water pan for refrigerator
From the results of the performance test of the comparative examples and comparative examples, it is known that when the mass ratio of the phosphorus flame retardant to the polyvinyl chloride is 1:1-3, the prepared water-receiving disc material has excellent flame retardance and mechanical properties (including notch impact strength, tensile strength and bending strength), and the water-receiving disc material has synergistic effect with glass fibers and inorganic fillers (the mass ratio of the glass fibers to the inorganic fillers is 1-2.5:1), so that the flame retardance (up to V0 level) and the mechanical strength of the water-receiving disc material can be further improved.
The foregoing detailed description has been provided for the purposes of illustration in connection with specific embodiments and exemplary examples, but such description is not to be construed as limiting the application. Those skilled in the art will appreciate that various equivalent substitutions, modifications and improvements may be made to the technical solution of the present application and its embodiments without departing from the spirit and scope of the present application, and these all fall within the scope of the present application. The scope of the application is defined by the appended claims.
Claims (5)
1. The water pan material for the refrigerator is characterized by comprising the following components in percentage by mass: the water pan material for the refrigerator comprises the following components: 40-60% of polypropylene resin, 10-15% of polyvinyl chloride, 5-10% of phosphorus flame retardant, 5-20% of compatilizer, 10-24% of composite filler and 0.5-1.5% of lubricant, wherein the composite filler comprises glass fiber and inorganic filler, and the mass ratio of the glass fiber to the inorganic filler is 1-2.5:1, wherein the length of the glass fiber is 0.2-0.6mm, the inorganic filler comprises one of barium sulfate, talcum powder, wollastonite and calcium carbonate, the polymerization degree of the polyvinyl chloride is 1000-1500, and the mass ratio of the phosphorus flame retardant to the polyvinyl chloride is 1:1-3, wherein the compatilizer is maleic anhydride grafted polypropylene.
2. The water tray material for a refrigerator according to claim 1, wherein the phosphorus flame retardant comprises one or more of ammonium polyphosphate, melamine polyphosphate, monoammonium phosphate, diammonium phosphate, tolyldiphenyl phosphate, triaryl phosphate.
3. The material as claimed in claim 1, wherein the particle size of the barium sulfate, talcum powder and calcium carbonate is 100nm-5 μm.
4. The refrigerator drain pan material of claim 1, wherein the lubricant comprises one of stearamide, zinc stearate, polyethylene wax.
5. The method for preparing a water tray material for a refrigerator according to any one of claims 1 to 4, comprising the steps of:
(1) According to the mass percentage, placing the polypropylene resin, the polyvinyl chloride, the phosphorus flame retardant, the compatilizer and the lubricant into a stirrer for stirring to prepare a premix;
(2) The composite filler is placed in another stirrer to be stirred according to the mass percentage, and a filling mixture is prepared;
(3) Feeding the premix prepared in the step (1) into a double-screw extruder from a main feeding port, feeding the filling mixture in the step (2) into the double-screw extruder from a side feeding port, and preparing extrusion granules from the premix and the filling mixture in the double-screw extruder through melt extrusion granulation;
(4) And (3) placing the extruded granules in the step (3) in an injection molding machine, and controlling the injection molding temperature to perform injection molding on the extruded granules to prepare the water pan material for the refrigerator.
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| JP6661152B1 (en) * | 2019-03-25 | 2020-03-11 | 株式会社Ｔｂｍ | Thermoplastic resin composition containing inorganic substance powder and molded article |
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