CN111875918A - Metallic TPE refrigerator door seal rubber sleeve composite material and preparation method thereof - Google Patents
Metallic TPE refrigerator door seal rubber sleeve composite material and preparation method thereof Download PDFInfo
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- CN111875918A CN111875918A CN202010769883.8A CN202010769883A CN111875918A CN 111875918 A CN111875918 A CN 111875918A CN 202010769883 A CN202010769883 A CN 202010769883A CN 111875918 A CN111875918 A CN 111875918A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 89
- 239000005060 rubber Substances 0.000 title claims abstract description 68
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 97
- 239000000843 powder Substances 0.000 claims abstract description 90
- 238000002156 mixing Methods 0.000 claims abstract description 83
- 229910052751 metal Inorganic materials 0.000 claims abstract description 80
- 239000002184 metal Substances 0.000 claims abstract description 80
- -1 polypropylene Polymers 0.000 claims abstract description 58
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 49
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 48
- 239000000314 lubricant Substances 0.000 claims abstract description 41
- 238000007789 sealing Methods 0.000 claims abstract description 38
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000004698 Polyethylene Substances 0.000 claims abstract description 28
- 229920000573 polyethylene Polymers 0.000 claims abstract description 28
- 239000004743 Polypropylene Substances 0.000 claims abstract description 27
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229920001155 polypropylene Polymers 0.000 claims abstract description 27
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 27
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical class C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 24
- 239000005662 Paraffin oil Substances 0.000 claims abstract description 21
- 239000000806 elastomer Substances 0.000 claims abstract description 21
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 17
- 238000005303 weighing Methods 0.000 claims abstract description 7
- 239000008187 granular material Substances 0.000 claims description 40
- 238000001125 extrusion Methods 0.000 claims description 33
- 239000000203 mixture Substances 0.000 claims description 30
- 239000007822 coupling agent Substances 0.000 claims description 24
- 239000000126 substance Substances 0.000 claims description 24
- 230000000844 anti-bacterial effect Effects 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 16
- 238000013329 compounding Methods 0.000 claims description 15
- 239000000155 melt Substances 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 12
- 230000003449 preventive effect Effects 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 9
- 238000005469 granulation Methods 0.000 claims description 9
- 230000003179 granulation Effects 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 230000003796 beauty Effects 0.000 claims description 8
- 238000007670 refining Methods 0.000 claims description 8
- ZHTRFSJGUKYTPR-UHFFFAOYSA-N 2-octyl-1,2-thiazolidin-4-one Chemical compound CCCCCCCCN1CC(=O)CS1 ZHTRFSJGUKYTPR-UHFFFAOYSA-N 0.000 claims description 7
- PORQOHRXAJJKGK-UHFFFAOYSA-N 4,5-dichloro-2-n-octyl-3(2H)-isothiazolone Chemical compound CCCCCCCCN1SC(Cl)=C(Cl)C1=O PORQOHRXAJJKGK-UHFFFAOYSA-N 0.000 claims description 7
- 235000021355 Stearic acid Nutrition 0.000 claims description 7
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 7
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims description 7
- 239000012188 paraffin wax Substances 0.000 claims description 7
- 229920001296 polysiloxane Polymers 0.000 claims description 7
- 239000008117 stearic acid Substances 0.000 claims description 7
- 239000001993 wax Substances 0.000 claims description 7
- 238000004383 yellowing Methods 0.000 claims description 7
- DPWFWWRPRPJCFX-UHFFFAOYSA-L zinc pyridine sulfate Chemical compound S(=O)(=O)([O-])[O-].[Zn+2].N1=CC=CC=C1 DPWFWWRPRPJCFX-UHFFFAOYSA-L 0.000 claims description 7
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 6
- 239000010445 mica Substances 0.000 claims description 6
- 229910052618 mica group Inorganic materials 0.000 claims description 6
- 239000011812 mixed powder Substances 0.000 claims description 6
- 239000000565 sealant Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000003153 chemical reaction reagent Substances 0.000 claims description 4
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims description 4
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims description 4
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
- 239000005977 Ethylene Substances 0.000 claims description 3
- 238000012661 block copolymerization Methods 0.000 claims description 3
- 238000007334 copolymerization reaction Methods 0.000 claims description 3
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 claims description 3
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- 229920005992 thermoplastic resin Polymers 0.000 claims description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 12
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 abstract description 6
- 239000006229 carbon black Substances 0.000 abstract description 6
- 239000010936 titanium Substances 0.000 abstract description 6
- 229910052719 titanium Inorganic materials 0.000 abstract description 6
- 239000004408 titanium dioxide Substances 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000049 pigment Substances 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000009472 formulation Methods 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 235000013799 ultramarine blue Nutrition 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/08—Parts formed wholly or mainly of plastics materials
- F25D23/082—Strips
- F25D23/087—Sealing strips
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- 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
- C08L2207/10—Peculiar tacticity
- C08L2207/14—Amorphous or atactic polypropylene
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a metallic TPE refrigerator door seal rubber sleeve composite material and a preparation method thereof, wherein the metallic TPE refrigerator door seal rubber sleeve composite material is composed of a styrene elastomer material, polypropylene, polyethylene, paraffin oil, hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, a lubricant, calcium carbonate, an antioxidant and metallic highlight powder, and the preparation method of the metallic TPE refrigerator door seal rubber sleeve composite material comprises the following steps: weighing; mixing and heating to prepare a material; granulating; and (5) extruding and molding the rubber sleeve. The invention solves the problems that the traditional TPE refrigerator door sealing rubber sleeve is monotonous in color, large in contrast with the color of a side plate panel of a refrigerator door in contact, and poor in overall harmony, and simultaneously solves the problems that the traditional TPE sealing strip material mostly adopts carbon black, titanium dioxide, iron oxide red, titanium yellow, ultramarine and the like, and one or more of traditional toner or color paste is compounded into the color required by a customer, but the metal color cannot be blended.
Description
Technical Field
The invention relates to the field of TPE refrigerator door seal rubber sleeve composite materials and preparation methods thereof, and particularly belongs to a metallic TPE refrigerator door seal rubber sleeve composite material and a preparation method thereof.
Background
The refrigerator door seal used in the present household refrigerator market partially adopts thermoplastic elastomer (TPE) materials which are all common three colors of grey, white and black, the color is monotonous, the contrast of the color between the refrigerator door seal and a side plate panel of a refrigerator door in contact is large, and the appearance harmony is poor. With the improvement of the living standard of people, more and more consumers not only pursue the quality of products, but also have higher and higher requirements on the appearance of the products, and the refrigerator door seal with monotonous color and poor integral color harmony can not meet the actual requirements of the consumers on pursuing the appearance of the products. Carbon black, titanium dioxide, iron oxide red, titanium yellow, ultramarine and other inorganic and organic pigments are added into the traditional TPE sealing strip material, and one or more of traditional toner or color paste is compounded to form the color required by a customer, but no metallic color is produced in the blending.
The metal powder pigment is directly added into the TPE material, so that the problems of uneven dispersion, easy scratching and powder falling on the surface and the like are easily caused. Therefore, a metallic TPE refrigerator door sealing rubber sleeve composite material and a preparation method thereof are developed to solve the problems.
Disclosure of Invention
The invention aims to provide a metallic TPE refrigerator door sealing rubber sleeve composite material and a preparation method thereof, which can solve the problems in the background technology. Is suitable for being popularized and used in the manufacture of the TPE refrigerator door sealant sleeve.
The technical scheme adopted by the invention is as follows:
the metallic TPE refrigerator door seal gum cover composite material comprises metallic highlight powder and hydrogenated styrene-butadiene block copolymer grafted maleic anhydride.
Further, the metal highlight powder is a nano-scale metal powder mixture, and the metal highlight powder is composed of mica particles, metal powder and a titanate coupling agent, wherein the content of the titanate coupling agent in the metal highlight powder accounts for 1-2% of the weight of the metal highlight powder.
Further, the metallic TPE refrigerator door seal gum cover composite material is composed of styrene elastomers, polypropylene, polyethylene, paraffin oil, hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, a lubricant, calcium carbonate, an antioxidant and metal highlight powder, wherein the added parts by weight of the components are as follows:
100 parts of styrene elastomer, 20-40 parts of polypropylene, 10-50 parts of polyethylene, 40-160 parts of paraffin oil, 5-20 parts of hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, 1-5 parts of lubricant, 1-4 parts of antioxidant, 1-10 parts of metal highlight powder and 40-200 parts of calcium carbonate;
wherein the unit of weight is kilogram, the styrene elastomer is prepared by compounding and mixing one or more of hydrogenated or semi-hydrogenated styrene-butadiene block copolymers and styrene-butadiene block copolymers with different molecular weights, the polypropylene is prepared by compounding one or more of random copolymerization polypropylene or block copolymerization polypropylene, the polyethylene is thermoplastic resin particles prepared by polymerizing ethylene, the paraffin oil is prepared by compounding two or more of linear low-density straight-chain alkane, low-density alkane with individual branch chain and high-density monocyclic cycloalkane with long side chain, the lubricant is prepared by compounding one or more of polyethylene wax, paraffin wax, silicone powder, stearic acid, erucamide and oleamide, and the antioxidant is 4, 5-dichloro-N-octyl-3-isothiazolinone DCOIT, The metal highlight powder is prepared by compounding one or more of low-yellowing pyridine zinc sulfate ZPT and water-soluble n-octyl isothiazolinone OIT, 1-2% by mass of titanate coupling agent is added into mica to be mixed and compounded, and the calcium carbonate is calcium carbonate particles with the particle size of 6.5-15 microns.
Further, the styrenic elastomer particles are manufactured by yueyang ba ling petrochemical limited under model number SEBS, SBS; the polypropylene is produced by Suzhou Fulu Biotechnology Limited, the polyethylene is produced by Shanghai Seisaku petrochemical industry Limited liability company, and the paraffin oil is produced by Heshui xi Hao chemical industry Limited under the brand number of 300 or 500;
the hydrogenated styrene-butadiene block copolymer grafted maleic anhydride is produced and provided by Yino chemical technology, Inc., Guangzhou;
the stearic acid in the lubricant is produced by eastern palm industry limited company in a model of VA-1865, the paraffin wax in the lubricant is produced by China Petroleum-comforting petrochemical company in a model of 58, the polyethylene wax in the lubricant is produced by Shanxi Macro-Yuan chemical industry limited company in a model of PE-2, the silicone powder in the lubricant is produced by Zhejiang Kyowa refining limited company in a model of SG-200, the erucyl amide in the lubricant is produced by Nanjing chemical reagent limited company, and the oleic amide in the lubricant is produced by Jiangxi Bell refining limited company;
the calcium carbonate is produced by Jiangxi Guangyi chemical industry, Inc.;
4, 5-dichloro-N-octyl-3-isothiazolinone DCOIT in the antibacterial mildew preventive is produced by the beauty chemical company Limited in Foshan City, low-yellowing pyridine zinc sulfate ZPT in the antibacterial mildew preventive is produced by the Ahaole mildew-proof antibacterial science and technology Limited in Guangzhou, and water-soluble N-octyl isothiazolinone OIT in the antibacterial mildew preventive is produced by the beauty chemical company Limited in Foshan City.
The preparation method of the metallic TPE refrigerator door seal rubber sleeve composite material comprises the following specific steps:
the method comprises the following steps: weighing: accurately weighing the relevant components in the metal highlight powder according to the weight part of claim 2 and other components according to the weight part range in claim 3;
step two: first-stage low-speed mixing: adding nanoscale metal powder and titanate coupling agent which accounts for 1-2% of the weight of the nanoscale metal powder into the high-speed mixing pot through a charging barrel of the high-speed mixing pot by adopting a high-speed mixing pot, raising the temperature of the high-speed mixing pot, fully mixing the coupling agent and the metal powder after the high-speed mixing pot is heated to 100-110 ℃ and mixed at low speed for 30min, discharging from the high-speed mixing pot, and cooling the obtained mixed powder to normal temperature for later use;
and (3) secondary material mixing: adding the styrene elastomer, the polypropylene, the polyethylene, the paraffin oil, the hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, the lubricant, the calcium carbonate, the antioxidant and the nano high-gloss metal powder which are accurately weighed according to the claim 3 into a high-speed mixing pot for secondary mixing at normal temperature through a high-speed mixing pot charging barrel, and mixing at 68 +/-3 ℃ for 40-50 min to obtain a mixed material;
step three: and (3) granulation: extruding and granulating the second-stage mixed material by using a double-screw extruder, wherein the temperature parameters of a first area to an eighth area of a screw of a double-screw extrusion section are set to be 150-220 ℃, and the temperature parameters of the double-screw extrusion section are set to be as follows: the temperature of the ninth zone is 150-160 ℃, the temperature of the tenth zone is 150-170 ℃, the temperature of the eleventh zone is 100-180 ℃, the temperature of the twelfth zone is 150-220 ℃, the temperature of the machine head is 150-220 ℃, the temperature of the melt is 165-200 ℃, the rotating speed of the main machine is 150-220 r/min, and the extruded material is water-cooled, granulated and dried to obtain a mixture granular material; the mixed material is sent into an extruder with the temperature of 150-220 ℃ for granulation to prepare granules, and the prepared granules are sent into the extruder with the temperature of 150-180 ℃ for extrusion door sealing;
step four: and (3) extrusion molding of the rubber sleeve: and (2) carrying out extrusion molding on the mixture granules by a single-screw extruder, wherein the granulated mixture granules can promote mutual melting of all components of the material, reduce the viscosity of a melt, and properly control the extrusion molding temperature, the parameters of the single-screw extruder are set to be 150-180 ℃ in a first area, 150-180 ℃ in a second area, 150-180 ℃ in a third area, 150-180 ℃ in a fourth area, 150-180 ℃ in a fifth area, 150-170 ℃ in a head, and 30-50 HZ in a host frequency, the mixture granules are discharged from the single-screw extruder and then enter a cold water tank for cooling, and when the temperature of the extruded material is reduced to 25-30 ℃, the extruded material is cut to obtain the metal refrigerator door sealing rubber sleeve.
Compared with the prior art, the invention has the following beneficial effects:
compared with the prior art, the invention solves the problems that the common thermoplastic elastomer TPE door sealing rubber sleeve has monotonous color, has large color contrast with the contacted refrigerator door side plate panel and has poor overall harmony, and simultaneously solves the problems that the traditional TPE sealing strip material mostly adopts carbon black, titanium dioxide, iron oxide red, titanium yellow, ultramarine and the like, one or more of traditional toner or color paste is compounded into the color required by a customer but the metallic color can not be prepared, and the metal powder pigment is directly added into the TPE material, so that the dispersion is uneven, and the surface is easy to scratch and fall off; the surface strength of the refrigerator door seal rubber sleeve is increased, the phenomenon that the surface of the rubber sleeve is easily scratched is eliminated, the elastic modulus of a rubber sleeve material is improved, the deformation degree of a common rubber sleeve is reduced, the overall sealing performance of a refrigerator is good, the processing flowability of granules of the material is improved, and the rejection rate of the material in the process of manufacturing the refrigerator door seal is reduced.
Drawings
FIG. 1 is a metallographic photograph of a refrigerator door seal rubber sleeve made of a common PVC material, with a longitudinal vertical section enlarged by 100 times;
FIG. 2 is a metallographic photograph of a metallic TPE refrigerator door seal gum cover made according to the formulation of example one, with a magnification of 50 times of the longitudinal vertical cross section;
FIG. 3 is a metallographic photograph of a metallic TPE refrigerator door seal gum cover made according to the formulation of example two, with a magnification of 50 times of the longitudinal vertical cross-section;
FIG. 4 is a metallographic photograph of a metallic TPE refrigerator door seal gum cover made according to the three formulations of the example, with a magnification of 50 times of the longitudinal vertical cross section;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described below with specific embodiments, and the technical solutions in the embodiments of the present invention are clearly and completely described. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be described in further detail with reference to examples and specific embodiments.
The metallic TPE refrigerator door seal gum cover composite material comprises metallic highlight powder and hydrogenated styrene-butadiene block copolymer grafted maleic anhydride.
Further, the metal highlight powder is a nano-scale metal powder mixture, and the metal highlight powder is composed of mica particles, metal powder and a titanate coupling agent, wherein the content of the titanate coupling agent in the metal highlight powder accounts for 1-2% of the weight of the metal highlight powder.
Further, the metallic TPE refrigerator door seal gum cover composite material is composed of styrene elastomers, polypropylene, polyethylene, paraffin oil, hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, a lubricant, calcium carbonate, an antioxidant and metal highlight powder, wherein the added parts by weight of the components are as follows:
100 parts of styrene elastomer, 20-40 parts of polypropylene, 10-50 parts of polyethylene, 40-160 parts of paraffin oil, 5-20 parts of hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, 1-5 parts of lubricant, 1-4 parts of antioxidant, 1-10 parts of metal highlight powder and 40-200 parts of calcium carbonate;
wherein the unit of weight is kilogram, the styrene elastomer is prepared by compounding and mixing one or more of hydrogenated or semi-hydrogenated styrene-butadiene block copolymers and styrene-butadiene block copolymers with different molecular weights, the polypropylene is prepared by compounding one or more of random copolymerization polypropylene or block copolymerization polypropylene, the polyethylene is thermoplastic resin particles prepared by polymerizing ethylene, the paraffin oil is prepared by compounding two or more of linear low-density straight-chain alkane, low-density alkane with individual branch chain and high-density monocyclic cycloalkane with long side chain, the lubricant is prepared by compounding one or more of polyethylene wax, paraffin wax, silicone powder, stearic acid, erucamide and oleamide, and the antioxidant is 4, 5-dichloro-N-octyl-3-isothiazolinone DCOIT, The metal highlight powder is prepared by compounding one or more of low-yellowing pyridine zinc sulfate ZPT and water-soluble n-octyl isothiazolinone OIT, 1-2% by mass of titanate coupling agent is added into mica to be mixed and compounded, and the calcium carbonate is calcium carbonate particles with the particle size of 6.5-15 microns.
Further, the styrenic elastomer particles are manufactured by yueyang ba ling petrochemical limited under model number SEBS, SBS; the polypropylene is produced by Suzhou Fulu Biotechnology Limited, the polyethylene is produced by Shanghai Seisaku petrochemical industry Limited liability company, and the paraffin oil is produced by Heshui xi Hao chemical industry Limited under the brand number of 300 or 500;
the hydrogenated styrene-butadiene block copolymer grafted maleic anhydride is produced and provided by Yino chemical technology, Inc., Guangzhou;
the stearic acid in the lubricant is produced by eastern palm industry limited company in a model of VA-1865, the paraffin wax in the lubricant is produced by China Petroleum-comforting petrochemical company in a model of 58, the polyethylene wax in the lubricant is produced by Shanxi Macro-Yuan chemical industry limited company in a model of PE-2, the silicone powder in the lubricant is produced by Zhejiang Kyowa refining limited company in a model of SG-200, the erucyl amide in the lubricant is produced by Nanjing chemical reagent limited company, and the oleic amide in the lubricant is produced by Jiangxi Bell refining limited company;
the calcium carbonate is produced by Jiangxi Guangyi chemical industry, Inc.;
4, 5-dichloro-N-octyl-3-isothiazolinone DCOIT in the antibacterial mildew preventive is produced by the beauty chemical company Limited in Foshan City, low-yellowing pyridine zinc sulfate ZPT in the antibacterial mildew preventive is produced by the Ahaole mildew-proof antibacterial science and technology Limited in Guangzhou, and water-soluble N-octyl isothiazolinone OIT in the antibacterial mildew preventive is produced by the beauty chemical company Limited in Foshan City.
The preparation method of the metallic TPE refrigerator door seal rubber sleeve composite material comprises the following specific steps:
the method comprises the following steps: weighing: accurately weighing the relevant components in the metal highlight powder according to the weight part of claim 2 and other components according to the weight part range in claim 3;
step two: first-stage low-speed mixing: adding nanoscale metal powder and titanate coupling agent which accounts for 1-2% of the weight of the nanoscale metal powder into the high-speed mixing pot through a charging barrel of the high-speed mixing pot by adopting a high-speed mixing pot, raising the temperature of the high-speed mixing pot, fully mixing the coupling agent and the metal powder after the high-speed mixing pot is heated to 100-110 ℃ and mixed at low speed for 30min, discharging from the high-speed mixing pot, and cooling the obtained mixed powder to normal temperature for later use;
and (3) secondary material mixing: adding the styrene elastomer, the polypropylene, the polyethylene, the paraffin oil, the hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, the lubricant, the calcium carbonate, the antioxidant and the nano high-gloss metal powder which are accurately weighed according to the claim 3 into a high-speed mixing pot for secondary mixing at normal temperature through a high-speed mixing pot charging barrel, and mixing at 68 +/-3 ℃ for 40-50 min to obtain a mixed material;
step three: and (3) granulation: extruding and granulating the second-stage mixed material by using a double-screw extruder, wherein the temperature parameters of a first area to an eighth area of a screw of a double-screw extrusion section are set to be 150-220 ℃, and the temperature parameters of the double-screw extrusion section are set to be as follows: the temperature of the ninth zone is 150-160 ℃, the temperature of the tenth zone is 150-170 ℃, the temperature of the eleventh zone is 100-180 ℃, the temperature of the twelfth zone is 150-220 ℃, the temperature of the machine head is 150-220 ℃, the temperature of the melt is 165-200 ℃, the rotating speed of the main machine is 150-220 r/min, and the extruded material is water-cooled, granulated and dried to obtain a mixture granular material; the mixed material is sent into an extruder with the temperature of 150-220 ℃ for granulation to prepare granules, and the prepared granules are sent into the extruder with the temperature of 150-180 ℃ for extrusion door sealing;
step four: and (3) extrusion molding of the rubber sleeve: and (2) carrying out extrusion molding on the mixture granules by a single-screw extruder, wherein the granulated mixture granules can promote mutual melting of all components of the material, reduce the viscosity of a melt, and properly control the extrusion molding temperature, the parameters of the single-screw extruder are set to be 150-180 ℃ in a first area, 150-180 ℃ in a second area, 150-180 ℃ in a third area, 150-180 ℃ in a fourth area, 150-180 ℃ in a fifth area, 150-170 ℃ in a head, and 30-50 HZ in a host frequency, the mixture granules are discharged from the single-screw extruder and then enter a cold water tank for cooling, and when the temperature of the extruded material is reduced to 25-30 ℃, the extruded material is cut to obtain the metal refrigerator door sealing rubber sleeve.
The first embodiment is as follows:
the metal color TPE refrigerator door sealant sleeve material is accurately weighed according to the following material parts:
100 parts of styrene elastomer, 20-40 parts of polypropylene, 10-50 parts of polyethylene, 40-160 parts of paraffin oil, 5-20 parts of hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, 1-5 parts of lubricant, 1-4 parts of antioxidant, 1-10 parts of metal highlight powder and 40-200 parts of calcium carbonate, wherein the unit of weight is kilogram,
adding nanoscale metal powder, which is a related component in accurately weighed metal highlight powder, and a titanate coupling agent accounting for 1-2% of the weight of the nanoscale metal powder into a high-speed mixing pot through a high-speed mixing machine charging barrel, raising the temperature of the high-speed mixing pot, mixing the nanoscale metal powder and the titanate coupling agent at a low speed for 30min when the temperature of the high-speed mixing pot is raised to 100-110 ℃, fully mixing the nanoscale metal powder and the titanate coupling agent, discharging the mixture from the high-speed mixing pot, and cooling the obtained mixed powder to normal temperature for subsequent use (first-stage mixing);
adding the styrene elastomer, the polypropylene, the polyethylene, the paraffin oil, the hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, the lubricant, the calcium carbonate, the antioxidant and the nano high-gloss metal powder which are accurately weighed according to the embodiment into a high-speed mixing pot for secondary mixing at normal temperature through a high-speed mixing pot charging barrel, and mixing at 68 +/-3 ℃ for 40-50 min to obtain a mixed material (secondary mixing);
extruding and granulating the second-stage mixed material by using a double-screw extruder, wherein the temperature parameters of a first area to an eighth area of a screw of a double-screw extrusion section are set to be 150-220 ℃, and the temperature parameters of the double-screw extrusion section are set to be as follows: the temperature of the ninth zone is 150 ℃, the temperature of the tenth zone is 150 ℃, the temperature of the eleventh zone is 180 ℃, the temperature of the twelfth zone is 220 ℃, the temperature of a machine head is 220 ℃, the temperature of a melt is 200 ℃, the rotating speed of a main machine is 220 r/min, and the extruded material is water-cooled, granulated and dried to obtain a mixture granular material; feeding the mixed material into an extruder at the temperature of 220 ℃ for granulation to prepare granules, and feeding the prepared granules into the extruder at the temperature of 150-180 ℃ for extrusion door sealing;
and (2) carrying out extrusion molding on the mixture granules by a single-screw extruder, wherein the granulated mixture granules can promote mutual melting of all components of the material, reduce the viscosity of a melt, and properly control the extrusion molding temperature, the parameters of the single-screw extruder are set to be 150-180 ℃ in a first area, 150-180 ℃ in a second area, 150-180 ℃ in a third area, 150-180 ℃ in a fourth area, 150-180 ℃ in a fifth area, 150-170 ℃ in a fifth area, 170 ℃ in a head, 30-50 HZ in a main machine frequency, and 220 r/min in a main machine rotating speed, discharging the single-screw extruder from a mold, cooling the single-screw extruder in a cold water tank, and cutting when the temperature of the extruded material is reduced to 25-30 ℃ to obtain the metal refrigerator door sealing rubber sleeve.
Then cutting, penetrating magnetism and heat welding are carried out to obtain a complete finished product of the refrigerator door seal.
The metal highlight powder in the refrigerator door seal rubber sleeve prepared by the formula and the process can eliminate the migration of the plasticizer to the surface of the door seal rubber sleeve, promote the melting of materials, reduce the viscosity and the processing temperature of a melt and improve the processing speed; meanwhile, the nanoscale metal powder in the metal highlight powder can partially migrate to the surface of the refrigerator door seal rubber sleeve product, so that the surface of the product is in a metal color, the mechanical property of the material is integrally improved, the surface strength of the door seal rubber sleeve is increased, and the surface of the refrigerator door seal rubber sleeve is not easily scratched; the material has good granule processing fluidity, and the refrigerator door sealing rubber sleeve made of the material is not easy to crack, thereby effectively reducing the rejection rate of products.
Compared with the common TPE refrigerator door sealing rubber sleeve material, the material solves the problems that the traditional TPE refrigerator door sealing rubber sleeve has monotonous color, large contrast with the color of a side plate panel of a refrigerator door which is contacted with the sealing rubber sleeve and poor overall harmony, and simultaneously solves the problems that the traditional TPE sealing strip material mostly adopts carbon black, titanium dioxide, iron oxide red, titanium yellow, ultramarine blue and the like, one or more of traditional toner or color paste is compounded into the color required by a customer but the metallic color cannot be prepared, and the problems that the dispersion is uneven, the surface is easy to scratch and the powder falls off are easily caused by directly adding the metallic powder pigment into the TPE material; the surface strength of the refrigerator door seal rubber sleeve is increased, the phenomenon that the surface of the rubber sleeve is easily scratched is eliminated, the elastic modulus of a rubber sleeve material is improved, the deformation degree of a common rubber sleeve is reduced, the overall sealing performance of a refrigerator is good, the processing flowability of granules of the material is improved, and the rejection rate of the material in the process of manufacturing the refrigerator door seal is reduced.
The physical property test result of the refrigerator door seal material is as follows:
example two:
the metal color TPE refrigerator door sealant sleeve material is accurately weighed according to the following material parts:
adding nanoscale metal powder, which is a related component in accurately weighed metal highlight powder, and a titanate coupling agent accounting for 1-2% of the weight of the nanoscale metal powder into a high-speed mixing pot through a high-speed mixing machine charging barrel, raising the temperature of the high-speed mixing pot, mixing the nanoscale metal powder and the titanate coupling agent at a low speed for 30min when the temperature of the high-speed mixing pot is raised to 100-110 ℃, fully mixing the nanoscale metal powder and the titanate coupling agent, discharging the mixture from the high-speed mixing pot, and cooling the obtained mixed powder to normal temperature for subsequent use (first-stage mixing);
adding the styrene elastomer, the polypropylene, the polyethylene, the paraffin oil, the hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, the lubricant, the calcium carbonate, the antioxidant and the nano high-gloss metal powder which are accurately weighed according to the embodiment into a high-speed mixing pot for secondary mixing at normal temperature through a high-speed mixing pot charging barrel, and mixing at 68 +/-3 ℃ for 40-50 min to obtain a mixed material (secondary mixing);
extruding and granulating the second-stage mixed material by using a double-screw extruder, wherein the temperature parameters of a first area to an eighth area of a screw of a double-screw extrusion section are set to be 150-220 ℃, and the temperature parameters of the double-screw extrusion section are set to be as follows: the temperature of the ninth zone is 160 ℃, the temperature of the tenth zone is 170 ℃, the temperature of the eleventh zone is 180 ℃, the temperature of the twelfth zone is 220 ℃, the temperature of a machine head is 220 ℃, the temperature of a melt is 200 ℃, the rotating speed of a main machine is 220 r/min, and the extruded material is water-cooled, granulated and dried to obtain a mixture granular material; feeding the mixed material into an extruder at the temperature of 220 ℃ for granulation to prepare granules, and feeding the prepared granules into the extruder at the temperature of 150-180 ℃ for extrusion door sealing;
and (2) carrying out extrusion molding on the mixture granules by a single-screw extruder, wherein the granulated mixture granules can promote mutual melting of all components of the material, reduce the viscosity of a melt, and properly control the extrusion molding temperature, the parameters of the single-screw extruder are set to be 150-180 ℃ in a first area, 150-180 ℃ in a second area, 150-180 ℃ in a third area, 150-180 ℃ in a fourth area, 150-180 ℃ in a fifth area, 150-170 ℃ in a fifth area, 170 ℃ in a head, 30-50 HZ in a main machine frequency, and 220 r/min in a main machine rotating speed, discharging the single-screw extruder from a mold, cooling the single-screw extruder in a cold water tank, and cutting when the temperature of the extruded material is reduced to 25-30 ℃ to obtain the metal refrigerator door sealing rubber sleeve.
Then cutting, penetrating magnetism and heat welding are carried out to obtain a complete finished product of the refrigerator door seal.
The metal highlight powder in the refrigerator door seal rubber sleeve prepared by the formula and the process can eliminate the migration of the plasticizer to the surface of the door seal rubber sleeve, promote the melting of materials, reduce the viscosity and the processing temperature of a melt and improve the processing speed; meanwhile, the nanoscale metal powder in the metal highlight powder can partially migrate to the surface of the refrigerator door seal rubber sleeve product, so that the surface of the product is in a metal color, the mechanical property of the material is integrally improved, the surface strength of the door seal rubber sleeve is increased, and the surface of the refrigerator door seal rubber sleeve is not easily scratched; the material has good granule processing fluidity, and the refrigerator door sealing rubber sleeve made of the material is not easy to crack, thereby effectively reducing the rejection rate of products.
Compared with the common TPE refrigerator door sealing rubber sleeve material, the material solves the problems that the traditional TPE refrigerator door sealing rubber sleeve has monotonous color, large contrast with the color of a side plate panel of a refrigerator door which is contacted with the sealing rubber sleeve and poor overall harmony, and simultaneously solves the problems that the traditional TPE sealing strip material mostly adopts carbon black, titanium dioxide, iron oxide red, titanium yellow, ultramarine blue and the like, one or more of traditional toner or color paste is compounded into the color required by a customer but the metallic color cannot be prepared, and the problems that the dispersion is uneven, the surface is easy to scratch and the powder falls off are easily caused by directly adding the metallic powder pigment into the TPE material; the surface strength of the refrigerator door seal rubber sleeve is increased, the phenomenon that the surface of the rubber sleeve is easily scratched is eliminated, the elastic modulus of a rubber sleeve material is improved, the deformation degree of a common rubber sleeve is reduced, the overall sealing performance of a refrigerator is good, the processing flowability of granules of the material is improved, and the rejection rate of the material in the process of manufacturing the refrigerator door seal is reduced.
The physical property test result of the refrigerator door seal material is as follows:
example three:
the metal color TPE refrigerator door sealant sleeve material is accurately weighed according to the following material parts:
adding nanoscale metal powder, which is a related component in accurately weighed metal highlight powder, and a titanate coupling agent accounting for 1-2% of the weight of the nanoscale metal powder into a high-speed mixing pot through a high-speed mixing machine charging barrel, raising the temperature of the high-speed mixing pot, mixing the nanoscale metal powder and the titanate coupling agent at a low speed for 30min when the temperature of the high-speed mixing pot is raised to 100-110 ℃, fully mixing the nanoscale metal powder and the titanate coupling agent, discharging the mixture from the high-speed mixing pot, and cooling the obtained mixed powder to normal temperature for subsequent use (first-stage mixing);
adding the styrene elastomer, the polypropylene, the polyethylene, the paraffin oil, the hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, the lubricant, the calcium carbonate, the antioxidant and the nano high-gloss metal powder which are accurately weighed according to the embodiment into a high-speed mixing pot for secondary mixing at normal temperature through a high-speed mixing pot charging barrel, and mixing at 68 +/-3 ℃ for 40-50 min to obtain a mixed material (secondary mixing);
extruding and granulating the second-stage mixed material by using a double-screw extruder, wherein the temperature parameters of a first area to an eighth area of a screw of a double-screw extrusion section are set to be 150-220 ℃, and the temperature parameters of the double-screw extrusion section are set to be as follows: the temperature of the ninth zone is 160 ℃, the temperature of the tenth zone is 160 ℃, the temperature of the eleventh zone is 170 ℃, the temperature of the twelfth zone is 200 ℃, the temperature of a machine head is 200 ℃, the temperature of a melt is 200 ℃, the rotating speed of a main machine is 180 r/min, and the extruded material is water-cooled, granulated and dried to obtain a mixture granular material; feeding the mixed material into an extruder at the temperature of 220 ℃ for granulation to prepare granules, and feeding the prepared granules into the extruder at the temperature of 150-180 ℃ for extrusion door sealing;
and (2) carrying out extrusion molding on the mixture granules by a single-screw extruder, wherein the granulated mixture granules can promote mutual melting of all components of the material, reduce the viscosity of a melt, and properly control the extrusion molding temperature, the parameters of the single-screw extruder are set to be 150-180 ℃ in a first area, 150-180 ℃ in a second area, 150-180 ℃ in a third area, 150-180 ℃ in a fourth area, 150-180 ℃ in a fifth area, 150-170 ℃ in a fifth area, 170 ℃ in a head, 30-50 HZ in a main machine frequency, and 220 r/min in a main machine rotating speed, discharging the single-screw extruder from a mold, cooling the single-screw extruder in a cold water tank, and cutting when the temperature of the extruded material is reduced to 25-30 ℃ to obtain the metal refrigerator door sealing rubber sleeve.
Then cutting, penetrating magnetism and heat welding are carried out to obtain a complete finished product of the refrigerator door seal.
The metal highlight powder in the refrigerator door seal rubber sleeve prepared by the formula and the process can eliminate the migration of the plasticizer to the surface of the door seal rubber sleeve, promote the melting of materials, reduce the viscosity and the processing temperature of a melt and improve the processing speed; meanwhile, the nanoscale metal powder in the metal highlight powder can partially migrate to the surface of the refrigerator door seal rubber sleeve product, so that the surface of the product is in a metal color, the mechanical property of the material is integrally improved, the surface strength of the door seal rubber sleeve is increased, and the surface of the refrigerator door seal rubber sleeve is not easily scratched; the material has good granule processing fluidity, and the refrigerator door sealing rubber sleeve made of the material is not easy to crack, thereby effectively reducing the rejection rate of products.
Compared with the common TPE refrigerator door sealing rubber sleeve material, the material solves the problems that the traditional TPE refrigerator door sealing rubber sleeve has monotonous color, large contrast with the color of a side plate panel of a refrigerator door which is contacted with the sealing rubber sleeve and poor overall harmony, and simultaneously solves the problems that the traditional TPE sealing strip material mostly adopts carbon black, titanium dioxide, iron oxide red, titanium yellow, ultramarine blue and the like, one or more of traditional toner or color paste is compounded into the color required by a customer but the metallic color cannot be prepared, and the problems that the dispersion is uneven, the surface is easy to scratch and the powder falls off are easily caused by directly adding the metallic powder pigment into the TPE material; the surface strength of the refrigerator door seal rubber sleeve is increased, the phenomenon that the surface of the rubber sleeve is easily scratched is eliminated, the elastic modulus of a rubber sleeve material is improved, the deformation degree of a common rubber sleeve is reduced, the overall sealing performance of a refrigerator is good, the processing flowability of granules of the material is improved, and the rejection rate of the material in the process of manufacturing the refrigerator door seal is reduced.
The physical property test result of the refrigerator door seal material is as follows:
wherein: the results of the relevant numerical values of the physical property tests of the refrigerator door seal material in the above-mentioned embodiments I to III are statistically included in the tables in the embodiments I to III, respectively.
Stated further, the styrenic elastomer particles of examples one through three are manufactured by yueyang ba ling petrochemical limited as model number SEBS, SBS; the polypropylene is produced by Suzhou Fulu Biotechnology Limited, the polyethylene is produced by Shanghai Seisaku petrochemical industry Limited liability company, and the paraffin oil is produced by Heshui xi Hao chemical industry Limited under the brand number of 300 or 500;
the hydrogenated styrene-butadiene block copolymer grafted maleic anhydride is produced and provided by Yino chemical technology, Inc., Guangzhou;
the stearic acid in the lubricant is produced by eastern palm industry limited company in a model of VA-1865, the paraffin wax in the lubricant is produced by China Petroleum-comforting petrochemical company in a model of 58, the polyethylene wax in the lubricant is produced by Shanxi Macro-Yuan chemical industry limited company in a model of PE-2, the silicone powder in the lubricant is produced by Zhejiang Kyowa refining limited company in a model of SG-200, the erucyl amide in the lubricant is produced by Nanjing chemical reagent limited company, and the oleic amide in the lubricant is produced by Jiangxi Bell refining limited company;
the calcium carbonate is produced by Jiangxi Guangyi chemical industry, Inc.;
4, 5-dichloro-N-octyl-3-isothiazolinone DCOIT in the antibacterial mildew preventive is produced by the beauty chemical company Limited in Foshan City, low-yellowing pyridine zinc sulfate ZPT in the antibacterial mildew preventive is produced by the Ahaole mildew-proof antibacterial science and technology Limited in Guangzhou, and water-soluble N-octyl isothiazolinone OIT in the antibacterial mildew preventive is produced by the beauty chemical company Limited in Foshan City.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (5)
1. The metallic TPE refrigerator door seal gum cover composite material is characterized by comprising metallic highlight powder and hydrogenated styrene-butadiene block copolymer grafted maleic anhydride.
2. The metallic TPE refrigerator door seal rubber sleeve composite material as claimed in claim 1, wherein the metallic highlight powder is a nano-scale metal powder mixture, the metallic highlight powder is composed of mica particles, metal powder and a titanate coupling agent, and the titanate coupling agent in the metallic highlight powder accounts for 1-2% of the weight of the metallic highlight powder.
3. The metallic TPE refrigerator door seal gum cover composite material of claim 1 or 2, which is characterized in that the metallic TPE refrigerator door seal gum cover composite material is composed of styrene elastomer, polypropylene, polyethylene, paraffin oil, hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, lubricant, calcium carbonate, antioxidant and metallic highlight powder, wherein the added parts by weight of the components are as follows:
100 parts of styrene elastomer, 20-40 parts of polypropylene, 10-50 parts of polyethylene, 40-160 parts of paraffin oil, 5-20 parts of hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, 1-5 parts of lubricant, 1-4 parts of antioxidant, 1-10 parts of metal highlight powder and 40-200 parts of calcium carbonate;
wherein the unit of weight is kilogram, the styrene elastomer is prepared by compounding and mixing one or more of hydrogenated or semi-hydrogenated styrene-butadiene block copolymers and styrene-butadiene block copolymers with different molecular weights, the polypropylene is prepared by compounding one or more of random copolymerization polypropylene or block copolymerization polypropylene, the polyethylene is thermoplastic resin particles prepared by polymerizing ethylene, the paraffin oil is prepared by compounding two or more of linear low-density straight-chain alkane, low-density alkane with individual branch chain and high-density monocyclic cycloalkane with long side chain, the lubricant is prepared by compounding one or more of polyethylene wax, paraffin wax, silicone powder, stearic acid, erucamide and oleamide, and the antioxidant is 4, 5-dichloro-N-octyl-3-isothiazolinone DCOIT, The metal highlight powder is prepared by compounding one or more of low-yellowing pyridine zinc sulfate ZPT and water-soluble n-octyl isothiazolinone OIT, 1-2% by mass of titanate coupling agent is added into mica to be mixed and compounded, and the calcium carbonate is calcium carbonate particles with the particle size of 6.5-15 microns.
4. The metallic TPE refrigerator door sealant sleeve composite material of claim 3, wherein the styrenic elastomer particles are manufactured by Yueyang Barlin petrochemical Co., Ltd under model number SEBS, SBS; the polypropylene is produced by Suzhou Fulu Biotechnology Limited, the polyethylene is produced by Shanghai Seisaku petrochemical industry Limited liability company, and the paraffin oil is produced by Heshui xi Hao chemical industry Limited under the brand number of 300 or 500;
the hydrogenated styrene-butadiene block copolymer grafted maleic anhydride is produced and provided by Yino chemical technology, Inc., Guangzhou;
the stearic acid in the lubricant is produced by eastern palm industry limited company in a model of VA-1865, the paraffin wax in the lubricant is produced by China Petroleum-comforting petrochemical company in a model of 58, the polyethylene wax in the lubricant is produced by Shanxi Macro-Yuan chemical industry limited company in a model of PE-2, the silicone powder in the lubricant is produced by Zhejiang Kyowa refining limited company in a model of SG-200, the erucyl amide in the lubricant is produced by Nanjing chemical reagent limited company, and the oleic amide in the lubricant is produced by Jiangxi Bell refining limited company;
the calcium carbonate is produced by Jiangxi Guangyi chemical industry, Inc.;
4, 5-dichloro-N-octyl-3-isothiazolinone DCOIT in the antibacterial mildew preventive is produced by the beauty chemical company Limited in Foshan City, low-yellowing pyridine zinc sulfate ZPT in the antibacterial mildew preventive is produced by the Ahaole mildew-proof antibacterial science and technology Limited in Guangzhou, and water-soluble N-octyl isothiazolinone OIT in the antibacterial mildew preventive is produced by the beauty chemical company Limited in Foshan City.
5. The preparation method of the metallic TPE refrigerator door sealant sleeve composite material as claimed in claim 1, comprises the following specific steps:
1) weighing: accurately weighing the relevant components in the metal highlight powder according to the weight part of claim 2 and other components according to the weight part range in claim 3;
2) first-stage low-speed mixing: adding nanoscale metal powder and titanate coupling agent which accounts for 1-2% of the weight of the nanoscale metal powder into the high-speed mixing pot through a charging barrel of the high-speed mixing pot by adopting a high-speed mixing pot, raising the temperature of the high-speed mixing pot, fully mixing the coupling agent and the metal powder after the high-speed mixing pot is heated to 100-110 ℃ and mixed at low speed for 30min, discharging from the high-speed mixing pot, and cooling the obtained mixed powder to normal temperature for later use;
and (3) secondary material mixing: adding the styrene elastomer, the polypropylene, the polyethylene, the paraffin oil, the hydrogenated styrene-butadiene block copolymer grafted maleic anhydride, the lubricant, the calcium carbonate, the antioxidant and the nano high-gloss metal powder which are accurately weighed according to the claim 3 into a high-speed mixing pot for secondary mixing at normal temperature through a high-speed mixing pot charging barrel, and mixing at 68 +/-3 ℃ for 40-50 min to obtain a mixed material;
3) and (3) granulation: extruding and granulating the second-stage mixed material by adopting a parallel double-screw extruder, wherein the temperature parameters of a first area to an eighth area of a screw of a double-screw extrusion section are set to be 150-220 ℃, and the temperature parameters of the double-screw extrusion section are set to be as follows: the temperature of the ninth zone is 150-160 ℃, the temperature of the tenth zone is 150-170 ℃, the temperature of the eleventh zone is 100-180 ℃, the temperature of the twelfth zone is 150-220 ℃, the temperature of the machine head is 150-220 ℃, the temperature of the melt is 165-200 ℃, the rotating speed of the main machine is 150-220 r/min, and the extruded material is water-cooled, granulated and dried to obtain a mixture granular material; the mixed material is sent into an extruder with the temperature of 150-220 ℃ for granulation to prepare granules, and the prepared granules are sent into the extruder with the temperature of 150-180 ℃ for extrusion door sealing;
4) and (3) extrusion molding of the rubber sleeve: and (2) carrying out extrusion molding on the mixture granules by a single-screw extruder, wherein the granulated mixture granules can promote mutual melting of all components of the material, reduce the viscosity of a melt, and properly control the extrusion molding temperature, the parameters of the single-screw extruder are set to be 150-180 ℃ in a first area, 150-180 ℃ in a second area, 150-180 ℃ in a third area, 150-180 ℃ in a fourth area, 150-180 ℃ in a fifth area, 150-170 ℃ in a head, and 30-50 HZ in a host frequency, the mixture granules are discharged from the single-screw extruder and then enter a cold water tank for cooling, and when the temperature of the extruded material is reduced to 25-30 ℃, the extruded material is cut to obtain the metal refrigerator door sealing rubber sleeve.
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Application publication date: 20201103 |