CN113583375B - Oil-resistant antibacterial HIPS alloy material and preparation method thereof - Google Patents
Oil-resistant antibacterial HIPS alloy material and preparation method thereof Download PDFInfo
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- 229920005669 high impact polystyrene Polymers 0.000 title claims abstract description 64
- 239000004797 high-impact polystyrene Substances 0.000 title claims abstract description 64
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 29
- 239000000956 alloy Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 42
- 239000011347 resin Substances 0.000 claims abstract description 42
- 238000002156 mixing Methods 0.000 claims abstract description 36
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 11
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 37
- 239000003921 oil Substances 0.000 claims description 31
- 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 10
- 238000005469 granulation Methods 0.000 claims description 9
- 230000003179 granulation Effects 0.000 claims description 9
- 239000000155 melt Substances 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical group 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
- 239000010639 cypress 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
- 238000007493 shaping process Methods 0.000 claims 1
- 239000004698 Polyethylene Substances 0.000 abstract description 21
- 229920001971 elastomer Polymers 0.000 abstract description 21
- 239000000806 elastomer Substances 0.000 abstract description 20
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 abstract description 12
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 abstract description 5
- 229920001684 low density polyethylene Polymers 0.000 abstract description 4
- 239000004702 low-density polyethylene Substances 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 4
- 229920001038 ethylene copolymer Polymers 0.000 abstract description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 7
- 239000005977 Ethylene Substances 0.000 description 7
- 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
- 238000005336 cracking Methods 0.000 description 4
- QHZOMAXECYYXGP-UHFFFAOYSA-N ethene;prop-2-enoic acid Chemical compound C=C.OC(=O)C=C QHZOMAXECYYXGP-UHFFFAOYSA-N 0.000 description 4
- 229920006226 ethylene-acrylic acid Polymers 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 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
- 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
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 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
- 241000894006 Bacteria Species 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 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
- 239000002390 adhesive tape Substances 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
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012662 bulk polymerization Methods 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
- 239000011888 foil Substances 0.000 description 1
- 239000011159 matrix material Substances 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
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 230000035939 shock Effects 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; wherein the composite compatibilizer is compounded by ethylene acrylic acid copolymer elastomer, maleic anhydride and ethylene copolymer elastomer. Adopting a step-by-step mixing mode, adjusting technological parameters, and introducing low-density polyethylene from the molecular structure; the addition of the composite compatibilizer ensures that HIPS and PE resin have good compatibility, ensures the molding of the material, and has obviously improved strength and enhanced 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 is high impact polystyrene, and has the advantages of easy processing, excellent dimensional stability, high impact strength, high rigidity and the like. And 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. While HIPS can be produced by suspension polymerization, the majority of the processes currently practiced in the industry for producing HIPS are bulk polymerization processes. In the polymerization process of the bulk method, the mixture of the styrene monomer, the rubber and the additive passes through a series of reactors, and the conversion rate reaches 70-90%. The material is widely applied to the industries of special inner liners of refrigerators, door liners and plastic plates of materials, and has the advantages of excellent flame retardance, water resistance, chemical corrosion resistance and the like. In recent years, home refrigerators have been popular, and stress corrosion cracking of HIPS liners of market refrigerators has occurred. The cracking cause of HIPS inner container is mainly related to oil resistance, high finish, thickness and uniformity of HIPS material, and the processing technology of refrigerating evaporator aluminum foil, the adhesive double faced adhesive tape, cleaning agent and other aspects. This severely affects the use of HIPS on liner materials, limiting the development of the materials. Greasy dirt not only affects the appearance, but also can cause bacterial growth after existence. Therefore, improving the toughness and edible oil resistance of HIPS boards, reducing the phenomenon of plastic sucking cracking of boards, and improving the antibacterial property of refrigerators has become a hot problem in the refrigerator board 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 technology, and can resist oil stains and bacteria.
In order to achieve the above purpose, the present invention provides the following technical solutions:
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; wherein the composite compatibilizer is compounded by ethylene acrylic acid copolymer elastomer, maleic anhydride and ethylene copolymer elastomer.
As a further scheme of the invention: the melt index of the HIPS resin is 8-10g/10min.
As a further scheme of the invention: the PE resin has a density of not more than 0.92g/cm 3 。
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 agent comprises at least one of an antioxidant and a lubricant.
As a further scheme of the invention: the antioxidant is compounded by a primary antioxidant 1076 and a secondary antioxidant 168.
As a further scheme of the invention: the lubricant includes 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 cypress oil, chitosan, montmorillonite, zinc oxalate, zinc tungstate, nano silver oxide, polyhexamethylene guanidine phosphate, N- (trichloromethylthio) phthalimide and zinc dihydrogen phosphate.
The invention also discloses a preparation method of the oil-resistant antibacterial HIPS alloy material, which comprises the following steps:
s1, weighing HIPS resin, PE resin and compatibilizer according to parts by mass, 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 an antibacterial agent and other auxiliary agents according to parts by mass, mixing the antibacterial agent and the other auxiliary agents with the first mixture, adding the mixture into a high-speed mixer, and mixing the mixture for 6-10 minutes at a rotating speed of 300-400r/min to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and obtaining the oil-resistant antibacterial HIPS alloy material through melting, melt mixing and extrusion granulation.
As a further scheme of the invention: the barrel 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 materials with high melt fingers, adopts a step-by-step mixing mode, adjusts technological parameters, starts from a molecular structure, and introduces low-density polyethylene; the addition of the composite compatibilizer ensures that HIPS and PE resin have good compatibility, ensures the molding of the material, and has obviously improved strength and enhanced oil resistance.
The HIPS resin is selected as the extruded material, so that the HIPS resin has good stability, tensile strength, impact resistance and chemical corrosion resistance; firstly adding PE to increase the oil resistance and toughness of HIPS boards; and the compatibilizer is added to increase the compatibility between the HIPS matrix and PE, promote the toughening performance, and have good synergistic effect, and the antibacterial agent is added to better improve the antibacterial property of the composite material, so that the inhibition rate of escherichia coli and staphylococcus aureus is obviously improved. Is suitable for the material of the inner container of the household refrigerator.
The compound compatibilizer greatly enhances the shock resistance of the composite material, and the acting force of the ester-ester group increases the acting force between chains due to the addition of acrylic esters; the maleic anhydride grafted styrene and butadiene are added with the copolymerized elastomer, and the three are mutually cooperated to inhibit the crosslinking of the material, so that the material is not easy to degrade and has higher strength.
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 easy to color.
Detailed Description
In order that the invention may be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated below. 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.
Specific information of the raw materials used in the following examples and comparative examples are as follows:
HIPS resin adopts bulk method matt high impact polystyrene, matt HIPS has large specific surface area, and is prepared into alloy with better compatibility, and the preparation method is as follows:
according to (80-90): and (10-20) weighing GPPS raw materials and SBS raw materials according to the mass ratio, uniformly mixing, passing through a double-screw machine barrel at the temperature of 180 ℃ and the screw rotating speed of 300r/min, and carrying out water passing and granulation on the extruder to form stable modified HIPS self-made resin with high melt index and impact.
PE resin, low density polyethylene, manufacturer is Korea Jinhu, brand 425TVL.
Compatibilizer:
the compatibilizer A is ethylene acrylic acid copolymer elastomer, the manufacturer is Jiangsu Co., ltd. Of good Yi Rong compatibilizer, and the brand is SAG-002;
the compatibilizer B is maleic anhydride, and the manufacturer is a photo new material technology Co., ltd. With the name N413;
the compatibilizer C is ethylene copolymerized elastomer, the manufacturer is Sumitomo Japan and the brand is BF-E;
an antioxidant: antioxidant 1076, manufacturer is Jin Haiya Baojie chemical Co., ltd, and the trade mark is AT-76; antioxidant 168, tianjin An Long, trade name 168.
And (3) a lubricant: PETS-50ps from Shanghai Langmuir Co., ltd.
Antibacterial agent: the IONPURE antibacterial agent of Japanese Danxiao is adopted, and the brand is IPL.
All materials are commercially available conventional and commonly used products.
It will be appreciated that the above raw material reagents are only examples of some embodiments of the invention, so that the technical solution of the invention is more clear, and it is not represented that the invention can only employ the above reagents, and the scope of the claims is in particular. In addition, "parts" described in examples and comparative examples refer to parts by mass unless otherwise specified.
Any range recited in the invention includes any numerical value between the endpoints and any sub-range of any numerical value between the endpoints or any numerical value between the endpoints.
Example 1
S1, weighing 87 parts of HIPS resin, 5 parts of PE resin, 0.5 part of ethylene acrylic acid type copolymerized elastomer, 1 part of maleic anhydride and 1.5 parts of ethylene copolymerized elastomer, 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 for 8 minutes at a rotating speed of 300-400r/min to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and obtaining the oil-resistant antibacterial HIPS alloy material through melting, melt mixing and extrusion granulation.
Wherein the barrel temperature of the parallel double-screw extruder is 210 ℃, the screw rotating speed is 500r/min, the melt pressure is controlled at 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 type copolymerized elastomer, 1 part of maleic anhydride and 1.5 parts of ethylene copolymerized elastomer, adding into a low-speed mixer, and mixing for 4 minutes at a 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 for 8 minutes at a rotating speed of 300-400r/min to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and obtaining the oil-resistant antibacterial HIPS alloy material through melting, melt mixing and extrusion granulation.
Wherein the barrel temperature of the parallel double-screw extruder is 210 ℃, the screw rotating speed is 500r/min, the melt pressure is controlled at 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 type copolymerized elastomer, 0.8 part of maleic anhydride and 1.8 parts of ethylene copolymerized elastomer, adding into a low-speed mixer, and mixing for 4 minutes at a 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 for 8 minutes at a rotating speed of 300-400r/min to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and obtaining the oil-resistant antibacterial HIPS alloy material through melting, melt mixing and extrusion granulation.
Wherein the barrel temperature of the parallel double-screw extruder is 210 ℃, the screw rotating speed is 500r/min, the melt pressure is controlled at 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 type copolymerized elastomer, 0.8 part of maleic anhydride and 1.8 parts of ethylene copolymerized elastomer, adding into a low-speed mixer, and mixing for 4 minutes at a 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 for 8 minutes at a rotating speed of 300-400r/min to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and obtaining the oil-resistant antibacterial HIPS alloy material through melting, melt mixing and extrusion granulation.
Wherein the barrel temperature of the parallel double-screw extruder is 210 ℃, the screw rotating speed is 500r/min, the melt pressure is controlled at 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 for 8 minutes at a rotating speed of 300-400r/min to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and obtaining the oil-resistant antibacterial HIPS alloy material through melting, melt mixing and extrusion granulation.
Wherein the barrel temperature of the parallel double-screw extruder is 210 ℃, the screw rotating speed is 500r/min, the melt pressure is controlled at 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 copolymerized elastomer, adding the HIPS resin, the PE resin, the maleic anhydride and the ethylene copolymerized elastomer into a low-speed mixer, and mixing the materials for 4 minutes at a 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 for 8 minutes at a rotating speed of 300-400r/min to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and obtaining the oil-resistant antibacterial HIPS alloy material through melting, melt mixing and extrusion granulation.
Wherein the barrel 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 controlled to be-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 subjected to the test, and the test standards and test results are shown in Table 1.
TABLE 1
Note that: the cracking change rate of the sample strip is calculated by oiling for 24 hours, and the proportion of fine lines is calculated, wherein the fine line area is the percentage of the oiling area, and the more the fine lines are, the worse the oil resistance is, and the better the reverse is.
According to the test results shown in Table 1, the oil-resistant antibacterial HIPS alloy material has excellent oil resistance, excellent antibacterial performance, good flowability and easy molding, and is suitable for large-size parts. In combination with example 4, comparative example 1 and comparative example 2, the synergistic effect of HIPS resin, PE resin and compatibilizer greatly improves the comprehensive performance of the composite material.
The invention adopts HIPS raw materials with high fat content, adopts a step-by-step mixing mode, adjusts technological parameters, starts from a molecular structure, introduces low-density polyethylene and adds a compatibilizer, so that HIPS and PE resin have good compatibility, the molding of the material is ensured, the strength is obviously improved, and the oil resistance is enhanced.
According to the invention, the antibacterial agent is added, so that the antibacterial performance is obviously improved, and the inhibition rate of escherichia coli and staphylococcus aureus is obviously improved. Is suitable for the material of the inner container of the household refrigerator.
Although the present disclosure describes embodiments, not every embodiment is described in terms of a single embodiment, and such description is for clarity only, and one skilled in the art will recognize that the embodiments described in the disclosure as a whole may be combined appropriately to form other embodiments that will be apparent to those skilled in the art.
Therefore, the above description is only of the preferred embodiments 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 (9)
1. The oil-resistant antibacterial HIPS alloy material is characterized by being prepared from the following components in percentage by mass:
wherein the composite compatibilizer is compounded by a compatibilizer A, a compatibilizer B and a compatibilizer C according to the mass ratio of 1:2 (3-5);
the compatibilizer A is SAG-002 produced by a preferable Yi Rong compatilizer;
the compatibilizer B is N413 produced by a new photo-material of wave-shaping energy;
the compatibilizer C is BF-E produced by Sumitomo Japan.
2. The oil-resistant and antibacterial HIPS alloy material according to claim 1, wherein the melting finger of the HIPS resin is 8-10g/10min.
3. The oil resistant and antibacterial HIPS alloy material of claim 1, wherein said PE resin has a density of not more than 0.92g/cm 3 。
4. The oil resistant and antibacterial HIPS alloy material of claim 1, wherein said other additives include at least one of antioxidants and lubricants.
5. The oil resistant and antibacterial HIPS alloy material of claim 4, wherein the antioxidant is compounded from a primary antioxidant 1076 and a secondary antioxidant 168.
6. The oil resistant antimicrobial HIPS alloy material of claim 4, wherein said lubricant comprises at least one of a stearic acid-based lubricant or a silicone-based lubricant.
7. The oil-resistant antibacterial HIPS alloy material of claim 1, wherein said antibacterial agent is at least one of cypress oil, chitosan, montmorillonite, zinc oxalate, zinc tungstate, nano silver oxide, polyhexamethylene guanidine phosphate, N- (trichloromethylthio) phthalimide, and zinc dihydrogen phosphate.
8. The method for preparing the oil-resistant antibacterial HIPS alloy material according to claims 1 to 7, which is characterized by comprising the following steps:
s1, weighing HIPS resin, PE resin and compatibilizer according to parts by mass, 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 an antibacterial agent and other auxiliary agents according to parts by mass, mixing the antibacterial agent and the other auxiliary agents with the first mixture, adding the mixture into a high-speed mixer, and mixing the mixture for 6-10 minutes at a rotating speed of 300-400r/min to obtain a second mixture;
and S3, adding the second mixture into a parallel double-screw extruder, and obtaining the oil-resistant antibacterial HIPS alloy material through melting, melt mixing and extrusion granulation.
9. The preparation method according to claim 8, 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 controlled to be-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 |
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| 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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