CN113121944A - Micro-foaming thermoplastic elastomer material and preparation method thereof - Google Patents
Micro-foaming thermoplastic elastomer material and preparation method thereof Download PDFInfo
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- CN113121944A CN113121944A CN202010025522.2A CN202010025522A CN113121944A CN 113121944 A CN113121944 A CN 113121944A CN 202010025522 A CN202010025522 A CN 202010025522A CN 113121944 A CN113121944 A CN 113121944A
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- thermoplastic elastomer
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- 239000000463 material Substances 0.000 title claims abstract description 28
- 229920002725 thermoplastic elastomer Polymers 0.000 title claims abstract description 26
- 238000005187 foaming Methods 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003921 oil Substances 0.000 claims abstract description 19
- 229920001971 elastomer Polymers 0.000 claims abstract description 18
- 239000000806 elastomer Substances 0.000 claims abstract description 18
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- -1 polypropylene Polymers 0.000 claims abstract description 17
- 239000004743 Polypropylene Substances 0.000 claims abstract description 11
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 8
- 229920001155 polypropylene Polymers 0.000 claims abstract description 8
- 239000000314 lubricant Substances 0.000 claims abstract description 7
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims abstract description 7
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims abstract description 7
- 239000004005 microsphere Substances 0.000 claims abstract description 6
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 5
- 239000002667 nucleating agent Substances 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 7
- 238000005469 granulation Methods 0.000 claims description 7
- 230000003179 granulation Effects 0.000 claims description 7
- 229920001400 block copolymer Polymers 0.000 claims description 6
- 229920005606 polypropylene copolymer Polymers 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims description 5
- 239000011159 matrix material Substances 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
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 3
- 239000008116 calcium stearate Substances 0.000 claims description 3
- 235000013539 calcium stearate Nutrition 0.000 claims description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 3
- BXOUVIIITJXIKB-UHFFFAOYSA-N ethene;styrene Chemical group C=C.C=CC1=CC=CC=C1 BXOUVIIITJXIKB-UHFFFAOYSA-N 0.000 claims description 3
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 3
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims description 3
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 3
- 229920005996 polystyrene-poly(ethylene-butylene)-polystyrene Polymers 0.000 claims description 3
- 229920005604 random copolymer Polymers 0.000 claims description 3
- 229920006132 styrene block copolymer Polymers 0.000 claims description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims 1
- 239000013536 elastomeric material Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 229920001169 thermoplastic Polymers 0.000 claims 1
- 239000004416 thermosoftening plastic Substances 0.000 claims 1
- 230000005484 gravity Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000010692 aromatic oil Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920006124 polyolefin elastomer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2353/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2353/02—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2391/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
- C08J2391/06—Waxes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2453/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2453/02—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers of vinyl aromatic monomers and conjugated dienes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Emergency Medicine (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a micro-foaming thermoplastic elastomer material which comprises the following components in percentage by weight: 2-10 wt% of polypropylene; 5 to 15 weight percent of styrene elastomer, 5 to 15 weight percent of white oil, 0.1 to 10 weight percent of ethylene-vinyl acetate copolymer, 5 to 15 weight percent of propylene elastomer, 1 to 5 weight percent of nucleating agent, 0.1 to 3 weight percent of lubricant, 0.1 to 1 weight percent of antioxidant and 10 to 30 weight percent of foaming microsphere. The micro-foaming thermoplastic elastomer material provided by the invention has the advantages of light specific gravity, stable size, no warping deformation, simple and easy preparation method, and environmental protection.
Description
Technical Field
The invention relates to a micro-foaming thermoplastic elastomer material, in particular to a micro-foaming thermoplastic elastomer material and a preparation method thereof, belonging to the technical field of materials.
Background
The microcellular foam is formed by using a thermoplastic material as a matrix and physically foamed microspheres as a gas source, forming supercritical state of gas in the microspheres through an injection molding process, injecting a thermoplastic elastomer into a mold cavity in a semi-molten state at a certain temperature, and then expanding closed microcells with the intermediate distribution size theory of dozens of microns to dozens of microns under the action of gas diffusion internal pressure. The micro-foaming common elastomer material in the prior art has the defects of large mold locking force, surface defect, large specific gravity, unstable size and the like.
Disclosure of Invention
The invention aims to provide a micro-foaming thermoplastic elastomer material and a preparation method thereof, so as to overcome the defects in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention comprises the following steps:
the embodiment of the invention provides a micro-foaming thermoplastic elastomer material which is characterized by comprising the following components in percentage by weight:
preferably, the polypropylene includes any one or a combination of two or more of homo-polypropylene, block copolymer polypropylene and random copolymer polypropylene, but is not limited thereto.
Preferably, the styrene-based elastomer matrix includes any one or a combination of two or more of styrene-butadiene-styrene block copolymer (SBS), styrene-ethylene/butylene-styrene block copolymer (SEBS), and styrene-ethylene/propylene-styrene block copolymer (SEPS), but is not limited thereto.
Preferably, the white oil includes any one or a combination of two or more of naphthenic oil, linear-chain alkane oil and aromatic oil, but is not limited thereto.
Further, the propylene-based elastomer is a polyolefin copolymer of propylene and ethylene.
Preferably, the lubricant includes one or a combination of two or more of oleamide, erucamide, zinc stearate, calcium stearate, ethylene bis stearamide, polyethylene wax and polydimethylsiloxane.
Preferably, the antioxidant includes any one or a combination of two or more of hindered phenol antioxidants, hindered amine antioxidants and phosphite antioxidants, but is not limited thereto.
The embodiment of the invention also provides a preparation method of the micro-foaming thermoplastic elastomer material, which comprises the following steps:
the method comprises the following steps: dissolving white oil in a styrene elastomer, and stirring for 15mins at room temperature until the white oil is completely absorbed by the styrene elastomer to prepare a first mixture;
step two: and adding polypropylene, ethylene-vinyl acetate copolymer, propylene elastomer, nucleating agent, foaming microspheres, lubricant and antioxidant into the first mixture, and stirring at normal temperature for 10mins to obtain the micro-foaming thermoplastic elastomer material.
Further, a double-screw extruder with the ratio of 48: 1 is adopted for extrusion granulation processing and forming, wherein the temperature of extrusion granulation is 100-300 ℃.
Compared with the prior art, the invention has the advantages that: the micro-foaming thermoplastic elastomer material provided by the invention has the advantages of light specific gravity, stable size, no warping deformation, simple and easy preparation method, and environmental protection.
Detailed Description
In view of the deficiencies in the prior art, the inventors of the present invention have made extensive studies and extensive practices to provide technical solutions of the present invention. The technical solution, its implementation and principles, etc. will be further explained as follows.
The embodiment of the invention provides a micro-foaming thermoplastic elastomer material which is characterized by comprising the following components in percentage by weight:
preferably, the polypropylene includes any one or a combination of two or more of homo-polypropylene, block copolymer polypropylene and random copolymer polypropylene, but is not limited thereto.
Preferably, the styrene-based elastomer matrix includes any one or a combination of two or more of styrene-butadiene-styrene block copolymer (SBS), styrene-ethylene/butylene-styrene block copolymer (SEBS), and styrene-ethylene/propylene-styrene block copolymer (SEPS), but is not limited thereto.
Preferably, the white oil includes any one or a combination of two or more of naphthenic oil, linear-chain alkane oil and aromatic oil, but is not limited thereto.
Further, the propylene-based elastomer is a polyolefin copolymer of propylene and ethylene.
Preferably, the lubricant includes one or a combination of two or more of oleamide, erucamide, zinc stearate, calcium stearate, ethylene bis stearamide, polyethylene wax and polydimethylsiloxane.
Preferably, the antioxidant includes any one or a combination of two or more of hindered phenol antioxidants, hindered amine antioxidants and phosphite antioxidants, but is not limited thereto.
Furthermore, the nucleating agent can change partial crystallization, improve the transparency, rigidity, surface gloss, impact toughness and heat distortion temperature of the product, shorten the molding cycle of the product and improve the processing and application performance of the product.
Further, the polyolefin elastomer has a narrow relative molecular mass distribution and a uniform short-chain branch distribution.
The embodiment of the invention also provides a preparation method of the micro-foaming thermoplastic elastomer material, which comprises the following steps:
the method comprises the following steps: dissolving white oil in a styrene elastomer, and stirring for 15mins at room temperature until the white oil is completely absorbed by the styrene elastomer to prepare a first mixture;
step two: and adding polypropylene, ethylene-vinyl acetate copolymer, propylene elastomer, nucleating agent, lubricant and antioxidant into the first mixture, and stirring for 10mins at normal temperature to obtain the micro-foamed thermoplastic elastomer material.
Further, a double-screw extruder with the ratio of 48: 1 is adopted for extrusion granulation processing and forming, wherein the temperature of extrusion granulation is 100-300 ℃.
The technical solution of the present invention is further explained below with reference to several examples.
Example 1
The method comprises the following steps: dissolving 100g of white oil in 100g of SEBS, and stirring for 15mins at room temperature until the white oil is completely absorbed by the SEBS to prepare a first mixture;
step two: and adding 80g of polypropylene, 20g of silicone master batch, 10g of stearic acid, 40g of EVA, 100g of Vistamaxx and 10g of antioxidant into the first mixture, and stirring at normal temperature for 10mins to obtain the micro-foaming thermoplastic elastomer material.
Further, a 48: 1 double-screw extruder is adopted for extrusion granulation processing and forming, wherein the temperature of extrusion granulation is 210 ℃.
Examples 2 to 8 were prepared in the same manner as in example 1 except that the amounts of the respective components were different as shown in the following table 1:
TABLE 1
The microcellular foamed thermoplastic elastomer materials obtained in examples 1 to 8 were pelletized to obtain products having different addition ratios of the microsphere foaming agent, and the values are shown in Table 2
TABLE 2
As can be seen from Table 2, the specific gravity of the product can be effectively reduced by the micro-foaming injection molding technology, and the problems of flash, warping and deformation and the like can be reduced. The material can be applied to the application fields with high rebound requirements and light weight design, such as the industries of automobiles, electronics, packaging and the like, and has great potential application value.
It should be understood that the above-mentioned embodiments are merely illustrative of the technical concepts and features of the present invention, which are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and therefore, the protection scope of the present invention is not limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. A micro-foaming thermoplastic elastomer material is characterized by comprising the following components in percentage by weight:
2. a microcellular thermoplastic elastomer material according to claim 1, wherein: the polypropylene comprises any one or the combination of more than two of homo-polypropylene, block copolymer polypropylene and random copolymer polypropylene.
3. A microcellular thermoplastic elastomer material according to claim 1, wherein: the styrene elastomer matrix comprises any one or the combination of more than two of styrene-butadiene-styrene block copolymer, styrene-ethylene/butylene-styrene block copolymer and styrene-ethylene/propylene-styrene block copolymer.
4. A microcellular thermoplastic elastomer material according to claim 1, wherein: the white oil comprises any one or the combination of more than two of naphthenic oil, straight-chain alkane oil and aromatic hydrocarbon oil.
5. A microcellular thermoplastic elastomer material according to claim 1, wherein: the propylene-based elastomer is a polyolefin copolymer of propylene and ethylene.
6. A microcellular thermoplastic elastomer material according to claim 1, wherein: the lubricant comprises one or the combination of more than two of oleamide, erucamide, zinc stearate, calcium stearate, ethylene bis stearamide, polyethylene wax and polydimethylsiloxane.
7. A microcellular thermoplastic elastomer material according to claim 1, wherein: the antioxidant comprises any one or the combination of more than two of hindered phenol antioxidants, hindered amine antioxidants and phosphite antioxidants.
8. A process for the preparation of a microcellular foamed thermoplastic elastomeric material according to any one of claims 1 to 8, characterized by comprising the steps of:
the method comprises the following steps: dissolving white oil in a styrene elastomer, and stirring for 15mins at room temperature until the white oil is completely absorbed by the styrene elastomer to prepare a first mixture;
step two: and adding polypropylene, ethylene-vinyl acetate copolymer, propylene elastomer, nucleating agent, foaming microspheres, lubricant and antioxidant into the first mixture, and stirring at normal temperature for 10mins to obtain the micro-foaming thermoplastic elastomer material.
9. The method for producing a microcellular thermoplastic elastomer material according to claim 9, wherein: extruding, granulating and processing into a shape by adopting a double-screw extruder with the ratio of 48: 1, wherein the temperature of the extrusion granulation is 100-300 ℃.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694484A (en) * | 2016-03-11 | 2016-06-22 | 福州市昊旺材料科技有限公司 | TPE (thermoplastic elastomer) foamed master batch and preparation method thereof |
| CN109608812A (en) * | 2018-12-27 | 2019-04-12 | 南通普力马弹性体技术有限公司 | A kind of Bottle cap spacer thermoplastic elastic material |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105694484A (en) * | 2016-03-11 | 2016-06-22 | 福州市昊旺材料科技有限公司 | TPE (thermoplastic elastomer) foamed master batch and preparation method thereof |
| CN109608812A (en) * | 2018-12-27 | 2019-04-12 | 南通普力马弹性体技术有限公司 | A kind of Bottle cap spacer thermoplastic elastic material |
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