CN113583375A - Oil-resistant antibacterial HIPS (high impact polystyrene) alloy material and preparation method thereof - Google Patents
Oil-resistant antibacterial HIPS (high impact polystyrene) alloy material and preparation method thereof Download PDFInfo
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- CN113583375A CN113583375A CN202110852676.3A CN202110852676A CN113583375A CN 113583375 A CN113583375 A CN 113583375A CN 202110852676 A CN202110852676 A CN 202110852676A CN 113583375 A CN113583375 A CN 113583375A
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- 229920005669 high impact polystyrene Polymers 0.000 title claims abstract description 66
- 239000004797 high-impact polystyrene Substances 0.000 title claims abstract description 66
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 30
- 239000000956 alloy Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 40
- 239000011347 resin Substances 0.000 claims abstract description 40
- 238000002156 mixing Methods 0.000 claims abstract description 35
- 229920001971 elastomer Polymers 0.000 claims abstract description 24
- 239000000806 elastomer Substances 0.000 claims abstract description 23
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 18
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 claims abstract description 11
- 229920001038 ethylene copolymer Polymers 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000013329 compounding Methods 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 35
- 239000003921 oil Substances 0.000 claims description 34
- 238000005303 weighing Methods 0.000 claims description 17
- 239000000314 lubricant Substances 0.000 claims description 15
- 239000003963 antioxidant agent Substances 0.000 claims description 11
- 230000003078 antioxidant effect Effects 0.000 claims description 11
- 239000000155 melt Substances 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000005469 granulation Methods 0.000 claims description 8
- 230000003179 granulation Effects 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 3
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 3
- 229920001661 Chitosan Polymers 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 235000021355 Stearic acid Nutrition 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 239000010627 cedar oil Substances 0.000 claims description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 2
- HKIOYBQGHSTUDB-UHFFFAOYSA-N folpet Chemical compound C1=CC=C2C(=O)N(SC(Cl)(Cl)Cl)C(=O)C2=C1 HKIOYBQGHSTUDB-UHFFFAOYSA-N 0.000 claims description 2
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 2
- -1 polyhexamethylene guanidine phosphate Polymers 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 229910001923 silver oxide Inorganic materials 0.000 claims description 2
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Substances [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 claims description 2
- 239000008117 stearic acid Substances 0.000 claims description 2
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- MFXMOUUKFMDYLM-UHFFFAOYSA-L zinc;dihydrogen phosphate Chemical compound [Zn+2].OP(O)([O-])=O.OP(O)([O-])=O MFXMOUUKFMDYLM-UHFFFAOYSA-L 0.000 claims description 2
- ZPEJZWGMHAKWNL-UHFFFAOYSA-L zinc;oxalate Chemical compound [Zn+2].[O-]C(=O)C([O-])=O ZPEJZWGMHAKWNL-UHFFFAOYSA-L 0.000 claims description 2
- 230000000845 anti-microbial effect Effects 0.000 claims 1
- 239000004698 Polyethylene Substances 0.000 abstract description 22
- 239000000463 material Substances 0.000 abstract description 16
- 229920001684 low density polyethylene Polymers 0.000 abstract description 4
- 239000004702 low-density polyethylene Substances 0.000 abstract description 4
- 239000012752 auxiliary agent Substances 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 7
- 239000002994 raw material Substances 0.000 description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 2
- 241000191967 Staphylococcus aureus Species 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000012662 bulk polymerization Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 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 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000010557 suspension polymerization 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
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
The invention discloses an oil-resistant antibacterial HIPS alloy material and a preparation method thereof, wherein the oil-resistant antibacterial HIPS alloy material is prepared from the following components in percentage by mass: 77-87% of HIPS resin, 5-15% of PE resin, 3% of composite compatibilizer, 2% of antibacterial agent and 3% of other auxiliary agents; the composite compatibilizer is prepared by compounding an ethylene acrylic acid copolymer elastomer, maleic anhydride and an ethylene copolymer elastomer. Adopting a step-by-step mixing mode, adjusting process parameters, starting from a molecular structure, and introducing low-density polyethylene; the addition of the composite compatibilizer ensures that the HIPS and the PE resin have good compatibility, ensures the molding of the material, obviously improves the strength and enhances the oil resistance.
Description
Technical Field
The invention relates to the technical field of modified high polymer materials, in particular to an oil-resistant antibacterial HIPS alloy material and a preparation method thereof.
Background
HIPS (high impact polystyrene) has the advantages of easy processing, excellent dimensional stability, high impact strength, high rigidity and the like. But have certain limitations in heat resistance, oxygen permeability, ultraviolet light stability and oil resistance. Chemical and performance impact polystyrene is prepared by dissolving polybutadiene rubber in styrene monomer prior to polymerization. Although it is possible to produce HIPS by suspension polymerization, the majority of the mass polymerization processes currently used in the industry for the production of HIPS are. In the bulk polymerization process, a mixture of a styrene monomer, rubber and an additive passes through a series of reactors, and the conversion rate reaches 70-90%. The flame-retardant plastic liner is widely applied to the special liner for the refrigerator, the matching of a door liner and the industry of plastic plates, is rapidly developed, and has excellent flame retardance, water resistance, chemical corrosion resistance and the like. In recent years, domestic refrigerators are popularized continuously, and stress corrosion cracking of HIPS inner containers of the refrigerators in the market sometimes occurs. The cracking reason of the HIPS inner container is mainly related to the oil resistance, high smoothness, thickness and uniformity of the HIPS material, the processing technology of the refrigeration evaporator aluminum foil, the adhered double-sided adhesive, a cleaning agent and the like. This severely affected the use of HIPS on the liner material, limiting the development of the material. Oil stains not only affect the appearance, but also cause the breeding of bacteria after being present. Therefore, the toughness and the edible oil resistance of the HIPS plate are improved, the blister cracking phenomenon of the plate is reduced, and the improvement of the antibacterial property of the refrigerator becomes a hot point problem in the refrigerator plate industry.
Disclosure of Invention
The invention aims to provide an oil-resistant antibacterial HIPS alloy material and a preparation method thereof, which are used for solving the problems in the background art and can resist oil stains and resist bacteria.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention discloses an oil-resistant antibacterial HIPS alloy material which is prepared from the following components in percentage by mass: 77-87% of HIPS resin, 5-15% of PE resin, 3% of composite compatibilizer, 2% of antibacterial agent and 3% of other auxiliary agents; the composite compatibilizer is prepared by compounding an ethylene acrylic acid copolymer elastomer, maleic anhydride and an ethylene copolymer elastomer.
As a further scheme of the invention: the melt index of the HIPS resin is 8-10g/10 min.
As a further scheme of the invention: the density of the PE resin is not more than 0.92g/cm3。
As a further scheme of the invention: the mass ratio of the ethylene acrylic acid copolymer elastomer, the maleic anhydride and the ethylene copolymer elastomer in the composite compatibilizer is 1:2 (3-5).
As a further scheme of the invention: the other auxiliary agents comprise at least one of an antioxidant and a lubricant.
As a further scheme of the invention: the antioxidant is compounded by a main antioxidant 1076 and an auxiliary antioxidant 168.
As a further scheme of the invention: the lubricant comprises at least one of a stearic acid-based lubricant or a silicone-based lubricant.
As a further scheme of the invention: the antibacterial agent is at least one of cedar wood oil, chitosan, montmorillonite, zinc oxalate, zinc tungstate, nano silver oxide, polyhexamethylene guanidine phosphate, N- (trichloromethylthio) phthalimide and zinc dihydrogen phosphate.
On the other hand, the invention discloses a preparation method of the oil-resistant antibacterial HIPS alloy material, which comprises the following steps:
s1, weighing the HIPS resin, the PE resin and the compatibilizer according to the mass parts, adding the HIPS resin, the PE resin and the compatibilizer into a low-speed mixer, and mixing for 3-5 minutes at a rotating speed of 200-300r/min to obtain a first mixture;
s2, weighing the antibacterial agent and other auxiliaries according to the mass parts, mixing the antibacterial agent and other auxiliaries with the first mixture, adding the mixture into a high-speed mixer, and mixing for 6-10 minutes at the rotating speed of 300-400r/min to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and performing melting, melt mixing, extrusion and granulation to obtain the oil-resistant antibacterial HIPS alloy material.
As a further scheme of the invention: the cylinder temperature of the parallel double-screw extruder is 180-210 ℃, the screw rotating speed is 400-500r/min, the melt pressure is controlled to be 1.5-1.8MPa, and the vacuum degree is-0.04-0.08 MPa.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts HIPS raw material with high melt index, adopts a step-by-step mixing mode, adjusts process parameters, starts from a molecular structure and introduces low-density polyethylene; the addition of the composite compatibilizer ensures that the HIPS and the PE resin have good compatibility, ensures the molding of the material, obviously improves the strength and enhances the oil resistance.
According to the invention, the HIPS resin is selected as the extruded sheet material, so that the high-strength high-impact-resistance high-strength plate has good stability, tensile strength, impact resistance and chemical corrosion resistance; firstly, adding PE to increase the oil resistance and the toughness of the HIPS board; and the compatibilizer is added to increase the compatibility between the HIPS matrix and the PE and promote the performance of toughness, the HIPS matrix, the PE matrix and the PE matrix have good synergistic effect, the antibacterial property of the composite material is better improved by adding the antibacterial agent, and the inhibition rate of escherichia coli and staphylococcus aureus is obviously improved. Is suitable for the material of the inner liner of the household appliance refrigerator.
The compound compatibilizer greatly enhances the impact resistance of the composite material, and the acting force between chains is increased due to the acting force of ester-ester groups when the acrylate is added; the maleic anhydride grafted styrene and the butadiene, and the copolymerized elastomer are mutually cooperated, so that the cross-linking of the material is inhibited, the material is not easy to degrade, and the strength is higher.
The PE resin with low density is selected, the fluidity is high, and the compatibility of the prepared alloy is good; and the low-density PE resin is semitransparent and is easy to color.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the specific embodiments illustrated. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The following examples and comparative examples employ the following raw material specific information:
the HIPS resin is prepared from bulk-process matte high impact polystyrene, the matte HIPS resin has a large specific surface area and better alloy compatibility, and the preparation method comprises the following steps:
according to the formula (80-90): (10-20) weighing the GPPS raw material and the SBS raw material in a mass ratio, uniformly mixing, passing through a double-screw machine barrel at the temperature of 180 ℃, the rotating speed of a screw rod at 300r/min, passing through water by an extruder, and granulating to form the stable modified HIPS self-made resin, and the melt index and impact are high.
PE resin, low density polyethylene, was manufactured from Korea brocade lake under the designation 425 TVL.
Compatibilizer:
compatibilizer A is ethylene acrylic acid copolymer elastomer, which is prepared from Jiangsu Co., Ltd, a good easy compatilizer, and the brand is SAG-002;
the compatibilizer B is maleic anhydride, which is made by Nippon wave energy optical new materials science and technology limited and has the brand number of N413;
the compatibilizer C is ethylene copolymerized elastomer, the manufacturer is Japanese sumitomo, and the brand is BF-E;
antioxidant: antioxidant 1076, manufactured by Jinhaiyabao chemical Co., Ltd, under the brand name AT-76; antioxidant 168 was manufactured as Tianjin Lianlong and brand 168.
Lubricant: PETS-50ps from Shanghai Langzhen industries, Inc. was used.
Antibacterial agents: an Otsuka Ionpure antibacterial agent is used, and IPL is used as the trademark.
All materials are conventional and common products sold in the market.
It is understood that the above raw material reagents are only examples of some specific embodiments of the present invention, so as to make the technical scheme of the present invention more clear, and do not represent that the present invention can only adopt the above reagents, particularly, the scope of the claims is subject to. In addition, "parts" described in examples and comparative examples mean parts by mass unless otherwise specified.
Any range recited herein is intended to include the endpoints and any number between the endpoints and any subrange subsumed therein or defined therein.
Example 1
S1, weighing 87 parts of HIPS resin, 5 parts of PE resin, 0.5 part of ethylene acrylic acid copolymer elastomer, 1 part of maleic anhydride and 1.5 parts of ethylene copolymer elastomer, adding the materials into a low-speed mixer, and mixing for 4 minutes at the rotating speed of 200-300r/min to obtain a first mixture;
s2, weighing 2 parts of antibacterial agent, 1 part of antioxidant and 2 parts of lubricant, mixing with the first mixture, adding into a high-speed mixer, and mixing at the rotating speed of 300-400r/min for 8 minutes to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and performing melting, melt mixing, extrusion and granulation to obtain the oil-resistant antibacterial HIPS alloy material.
Wherein the cylinder temperature of the parallel double-screw extruder is 210 ℃, the screw rotating speed is 500r/min, the melt pressure is controlled to be 1.8MPa, and the vacuum degree is-0.08 MPa.
Example 2
S1, weighing 82 parts of HIPS resin, 10 parts of PE resin, 0.5 part of ethylene acrylic acid copolymer elastomer, 1 part of maleic anhydride and 1.5 parts of ethylene copolymer elastomer, adding into a low-mixing machine, and mixing for 4 minutes at the rotating speed of 200-300r/min to obtain a first mixture;
s2, weighing 2 parts of antibacterial agent, 1 part of antioxidant and 2 parts of lubricant, mixing with the first mixture, adding into a high-speed mixer, and mixing at the rotating speed of 300-400r/min for 8 minutes to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and performing melting, melt mixing, extrusion and granulation to obtain the oil-resistant antibacterial HIPS alloy material.
Wherein the cylinder temperature of the parallel double-screw extruder is 210 ℃, the screw rotating speed is 500r/min, the melt pressure is controlled to be 1.8MPa, and the vacuum degree is-0.08 MPa.
Example 3
S1, weighing 77 parts of HIPS resin, 15 parts of PE resin, 0.4 part of ethylene acrylic acid copolymer elastomer, 0.8 part of maleic anhydride and 1.8 parts of ethylene copolymer elastomer, and adding the materials into a low-speed mixer to mix for 4 minutes at the rotating speed of 200-300r/min to obtain a first mixture;
s2, weighing 2 parts of antibacterial agent, 1 part of antioxidant and 2 parts of lubricant, mixing with the first mixture, adding into a high-speed mixer, and mixing at the rotating speed of 300-400r/min for 8 minutes to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and performing melting, melt mixing, extrusion and granulation to obtain the oil-resistant antibacterial HIPS alloy material.
Wherein the cylinder temperature of the parallel double-screw extruder is 210 ℃, the screw rotating speed is 500r/min, the melt pressure is controlled to be 1.8MPa, and the vacuum degree is-0.08 MPa.
Example 4
S1, weighing 82 parts of HIPS resin, 10 parts of PE resin, 0.4 part of ethylene acrylic acid copolymer elastomer, 0.8 part of maleic anhydride and 1.8 parts of ethylene copolymer elastomer, and adding the materials into a low-speed mixer to mix for 4 minutes at the rotating speed of 200-300r/min to obtain a first mixture;
s2, weighing 2 parts of antibacterial agent, 1 part of antioxidant and 2 parts of lubricant, mixing with the first mixture, adding into a high-speed mixer, and mixing at the rotating speed of 300-400r/min for 8 minutes to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and performing melting, melt mixing, extrusion and granulation to obtain the oil-resistant antibacterial HIPS alloy material.
Wherein the cylinder temperature of the parallel double-screw extruder is 210 ℃, the screw rotating speed is 500r/min, the melt pressure is controlled to be 1.8MPa, and the vacuum degree is-0.08 MPa.
Comparative example 1
S1, weighing 83.8 parts of HIPS resin, 10 parts of PE resin, 0.4 part of ethylene acrylic acid copolymer elastomer and 0.8 part of maleic anhydride, adding into a low-speed mixer, and mixing for 4 minutes at the rotating speed of 200-300r/min to obtain a first mixture;
s2, weighing 2 parts of antibacterial agent, 1 part of antioxidant and 2 parts of lubricant, mixing with the first mixture, adding into a high-speed mixer, and mixing at the rotating speed of 300-400r/min for 8 minutes to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and performing melting, melt mixing, extrusion and granulation to obtain the oil-resistant antibacterial HIPS alloy material.
Wherein the cylinder temperature of the parallel double-screw extruder is 210 ℃, the screw rotating speed is 500r/min, the melt pressure is controlled to be 1.8MPa, and the vacuum degree is-0.08 MPa.
Comparative example 2
S1, weighing 82.4 parts of HIPS resin, 10 parts of PE resin, 0.8 part of maleic anhydride and 1.8 parts of ethylene copolymer elastomer, adding into a low-speed mixer, and mixing at the rotating speed of 200-300r/min for 4 minutes to obtain a first mixture;
s2, weighing 2 parts of antibacterial agent, 1 part of antioxidant and 2 parts of lubricant, mixing with the first mixture, adding into a high-speed mixer, and mixing at the rotating speed of 300-400r/min for 8 minutes to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and performing melting, melt mixing, extrusion and granulation to obtain the oil-resistant antibacterial HIPS alloy material.
Wherein the cylinder temperature of the parallel double-screw extruder is 180-210 ℃, the screw rotating speed is 400-500r/min, the melt pressure is controlled to be 1.5-1.8MPa, and the vacuum degree is-0.04-0.08 MPa.
The oil-resistant antibacterial HIPS alloy materials prepared in examples 1 to 4 and comparative examples 1 to 2 were tested, and the test standards and test results are shown in Table 1.
TABLE 1
Note: the proportion of fine lines is calculated after the sample strip is oiled for 24 hours, the area of the fine lines accounts for the percentage of the oiled area, the more the fine lines are, the poorer the oil resistance is, and otherwise, the better the oil resistance is.
According to the test results in table 1, the oil-resistant and antibacterial HIPS alloy material disclosed by the invention has very excellent oil resistance, not only is excellent in antibacterial performance, but also good in fluidity, easy to mold and suitable for large-size parts. By combining the embodiment 4, the comparative example 1 and the comparative example 2, the synergistic effect of the HIPS resin, the PE resin and the compatibilizer greatly improves the comprehensive performance of the composite material.
The invention adopts the HIPS raw material with high fat solubility, adopts a step-by-step mixing mode, adjusts the process parameters, starts from the molecular structure, introduces the low-density polyethylene and adds the compatibilizer, so that the HIPS and the PE resin have good compatibility, ensures the molding of the material, obviously improves the strength and enhances the oil resistance.
The antibacterial agent is added, so that the antibacterial performance is obviously improved, and the inhibition rates of escherichia coli and staphylococcus aureus are obviously improved. Is suitable for the material of the inner liner of the household appliance refrigerator.
Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. The oil-resistant antibacterial HIPS alloy material is characterized by being prepared from the following components in percentage by mass:
the composite compatibilizer is prepared by compounding an ethylene acrylic acid copolymer elastomer, maleic anhydride and an ethylene copolymer elastomer.
2. The oil-resistant and antibacterial HIPS alloy material as set forth in claim 1, wherein the melt index of the HIPS resin is 8-10g/10 min.
3. The oil-resistant and antibacterial HIPS alloy material as set forth in claim 1, wherein the PE resin has a density of not more than 0.92g/cm3。
4. The oil-resistant and antibacterial HIPS alloy material as claimed in claim 1, wherein the mass ratio of the ethylene acrylic acid copolymer elastomer, the maleic anhydride and the ethylene copolymer elastomer in the composite compatibilizer is 1:2 (3-5).
5. The oil-resistant and antibacterial HIPS alloy material according to claim 1, wherein the other additives comprise at least one of an antioxidant and a lubricant.
6. The oil-resistant and antibacterial HIPS alloy material according to claim 5, wherein the antioxidant is compounded by a main antioxidant 1076 and an auxiliary antioxidant 168.
7. The oil and antimicrobial HIPS alloy material of claim 5, wherein the lubricant comprises at least one of a stearic acid type lubricant or a silicone type lubricant.
8. The oil-resistant and antibacterial HIPS alloy material of claim 1, wherein the antibacterial agent is at least one of cedar wood oil, chitosan, montmorillonite, zinc oxalate, zinc tungstate, nano silver oxide, polyhexamethylene guanidine phosphate, N- (trichloromethylthio) phthalimide and zinc dihydrogen phosphate.
9. The method for preparing the oil-resistant and antibacterial HIPS alloy material according to the claims 1 to 8, wherein the method comprises the following steps:
s1, weighing the HIPS resin, the PE resin and the compatibilizer according to the mass parts, adding the HIPS resin, the PE resin and the compatibilizer into a low-speed mixer, and mixing for 3-5 minutes at a rotating speed of 200-300r/min to obtain a first mixture;
s2, weighing the antibacterial agent and other auxiliaries according to the mass parts, mixing the antibacterial agent and other auxiliaries with the first mixture, adding the mixture into a high-speed mixer, and mixing for 6-10 minutes at the rotating speed of 300-400r/min to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and performing melting, melt mixing, extrusion and granulation to obtain the oil-resistant antibacterial HIPS alloy material.
10. The preparation method as claimed in claim 9, wherein the barrel temperature of the parallel twin-screw extruder is 180-210 ℃, the screw rotation speed is 400-500r/min, the melt pressure is controlled to be 1.5-1.8MPa, and the vacuum degree is-0.04-0.08 MPa.
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| CN104098865A (en) * | 2014-07-03 | 2014-10-15 | 合肥杰事杰新材料股份有限公司 | Polystyrene-polyethylene resin alloy material used for refrigerator inner container and preparation method thereof |
| CN108329611A (en) * | 2018-02-26 | 2018-07-27 | 合肥信亚达智能科技有限公司 | A kind of alloy material of inner container of icebox and preparation method thereof |
| CN111154213A (en) * | 2019-12-23 | 2020-05-15 | 会通新材料股份有限公司 | Super-edible oil-resistant low-temperature-resistant PS (polystyrene) alloy material and preparation method thereof |
| CN112143153A (en) * | 2020-09-30 | 2020-12-29 | 海信容声(广东)冰箱有限公司 | Refrigerator liner, refrigerator liner material and preparation method thereof |
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| CN104098865A (en) * | 2014-07-03 | 2014-10-15 | 合肥杰事杰新材料股份有限公司 | Polystyrene-polyethylene resin alloy material used for refrigerator inner container and preparation method thereof |
| CN108329611A (en) * | 2018-02-26 | 2018-07-27 | 合肥信亚达智能科技有限公司 | A kind of alloy material of inner container of icebox and preparation method thereof |
| CN111154213A (en) * | 2019-12-23 | 2020-05-15 | 会通新材料股份有限公司 | Super-edible oil-resistant low-temperature-resistant PS (polystyrene) alloy material and preparation method thereof |
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