CN112745659A - Thermoplastic polyurethane elastomer material containing antistatic master batch and preparation method thereof - Google Patents
Thermoplastic polyurethane elastomer material containing antistatic master batch and preparation method thereof Download PDFInfo
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- CN112745659A CN112745659A CN202010042185.8A CN202010042185A CN112745659A CN 112745659 A CN112745659 A CN 112745659A CN 202010042185 A CN202010042185 A CN 202010042185A CN 112745659 A CN112745659 A CN 112745659A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 41
- 239000000806 elastomer Substances 0.000 title claims abstract description 40
- 239000000463 material Substances 0.000 title claims abstract description 37
- 239000004433 Thermoplastic polyurethane Substances 0.000 title claims abstract description 32
- 229920002803 thermoplastic polyurethane Polymers 0.000 title claims abstract description 32
- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000002216 antistatic agent Substances 0.000 claims abstract description 46
- 229920003225 polyurethane elastomer Polymers 0.000 claims abstract description 29
- 229920000728 polyester Polymers 0.000 claims abstract description 26
- 239000003921 oil Substances 0.000 claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 19
- 229920000642 polymer Polymers 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 10
- 239000000314 lubricant Substances 0.000 claims abstract description 10
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- 238000001125 extrusion Methods 0.000 claims description 11
- 238000005469 granulation Methods 0.000 claims description 11
- 230000003179 granulation Effects 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 10
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 8
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 6
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 6
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 6
- GDDNTTHUKVNJRA-UHFFFAOYSA-N 3-bromo-3,3-difluoroprop-1-ene Chemical compound FC(F)(Br)C=C GDDNTTHUKVNJRA-UHFFFAOYSA-N 0.000 claims description 3
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 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
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 3
- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- MVTQSBYPNJATTN-UHFFFAOYSA-L beryllium;diperchlorate Chemical compound [Be+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O MVTQSBYPNJATTN-UHFFFAOYSA-L 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
- 235000013539 calcium stearate Nutrition 0.000 claims description 3
- 239000008116 calcium stearate Substances 0.000 claims description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 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
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 claims description 3
- 229910001486 lithium perchlorate Inorganic materials 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
- 229920000570 polyether Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229910001487 potassium perchlorate Inorganic materials 0.000 claims description 3
- 239000012798 spherical particle Substances 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 abstract description 5
- 238000012986 modification Methods 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract description 4
- 238000001556 precipitation Methods 0.000 abstract description 2
- 230000009965 odorless effect Effects 0.000 abstract 1
- 239000006229 carbon black Substances 0.000 description 6
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 6
- 230000003068 static effect Effects 0.000 description 6
- 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 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000011258 core-shell material Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229920001477 hydrophilic polymer Polymers 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 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
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/06—Polyurethanes from polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
- C08L91/06—Waxes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/017—Additives being an antistatic agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
-
- 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
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention provides a thermoplastic polyurethane elastomer material containing antistatic master batches, which comprises the following components in percentage by weight: 5 wt% -25 wt% of white oil, 5 wt% -15 wt% of polyester elastomer and 5 wt% -10 w% of inorganic permanent antistatic agentt%, 5-10 wt% of a polymer permanent antistatic agent, 0.1-1 wt% of an opening agent, 0.1-1 wt% of a lubricant and 0.1-1 wt% of an antioxidant, wherein the opening agent comprises nano silicon dioxide. The thermoplastic polyurethane elastomer material containing the antistatic master batch provided by the invention has the advantages of high product stability, no precipitation risk and uniform dispersion in the antistatic modification of the polyurethane elastomer, so that the antistatic capability is long. The surface resistivity of the elastomer material is 107Omega to 1010The range of omega is wide, and the preparation method is simple and easy to implement, green, environment-friendly and odorless.
Description
Technical Field
The invention relates to a thermoplastic polyurethane elastomer material containing antistatic master batches, in particular to a thermoplastic polyurethane elastomer material containing antistatic master batches and a preparation method thereof, belonging to the technical field of materials.
Background
Thermoplastic elastomer materials have high insulation performance with most rubber and plastic materials, but generate a large amount of static electricity during use, and the sensitive electronic elements are damaged or destroyed by the static electricity discharge. In the prior art, a permanent antistatic material is generally prepared by adding a conductive material or an antistatic agent into a polymer for compounding, and the problem that the antistatic material prepared by adding a conductive filler has uneven dispersion of the filler and is easy to cause surface defects is often encountered. With the development and market promotion of polymer permanent antistatic agents, the addition of polymer permanent antistatic agents has become one of the important methods for preparing permanent antistatic materials.
At present, the addition of the antistatic agent has certain technical difficulty in the antistatic modification process of the polyurethane elastomer. In general, the modified polyurethane elastomer is obtained by directly mixing and granulating granular TPU particles and an antistatic agent. The defects of uneven blanking and uneven dispersion exist in the preparation process, so that the antistatic effect cannot achieve the expected effect.
Disclosure of Invention
The invention aims to provide a thermoplastic polyurethane elastomer material containing antistatic master batch 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 thermoplastic polyurethane elastomer material containing antistatic master batches, which comprises the following components in percentage by weight: 5 wt% -25 wt% of white oil, 5 wt% -15 wt% of polyester elastomer, 5 wt% -10 wt% of inorganic permanent antistatic agent, 5 wt% -10 wt% of high-molecular permanent antistatic agent, 0.1 wt% -1 wt% of opening agent, 0.1 wt% -1 wt% of lubricant and 0.1 wt% -1 wt% of antioxidant, wherein the opening agent comprises nano silicon dioxide.
Preferably, the polyester-based elastomer includes any one or a combination of two or more of a polyester-based polyurethane elastomer, a polyether-based polyurethane elastomer, and an aliphatic-based polyurethane elastomer, but is not limited thereto.
Preferably, the inorganic permanent antistatic agent includes any one or a combination of two or more of potassium perchlorate, ammonium perchlorate, lithium perchlorate and beryllium perchlorate, but is not limited thereto.
Preferably, the polymeric permanent antistatic agent includes any one or a combination of two or more of polyolefin polymer antistatic agents and polyoxyethylene ether antistatic agents, but is not limited thereto.
Further, the nano silicon dioxide is spherical particles with the diameter of 100-500 nm.
Preferably, the lubricant includes one or more of oleamide, erucamide, zinc stearate, calcium stearate, ethylene bis stearamide, polyethylene wax and polydimethylsiloxane, but is not limited thereto.
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 thermoplastic polyurethane elastomer material containing the antistatic master batch, which comprises the following steps:
the method comprises the following steps: dissolving white oil in a polyester type polyurethane elastomer, and stirring for 15mins at room temperature until the white oil is completely absorbed by the polyester type polyurethane elastomer to prepare a first mixture;
step two: and adding an inorganic permanent antistatic agent, a high-molecular permanent antistatic agent, a mouth-opening agent, a lubricant and an antioxidant into the first mixture, and stirring at normal temperature for 10mins to obtain the thermoplastic polyurethane elastomer material containing the antistatic master batch.
Further, a 48:1 double-screw extruder 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 thermoplastic polyurethane elastomer material containing the antistatic master batch provided by the invention has the advantages of high product stability, no precipitation risk and uniform dispersion in the antistatic modification of the polyurethane elastomer, so that the antistatic capability is long. The surface resistivity of the elastomer material is 107Omega to 1010The range of omega is wide, and the preparation method is simple and easy to implement, green and environment-friendly.
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 thermoplastic polyurethane elastomer material containing antistatic master batches, which comprises the following components in percentage by weight: 5 wt% -25 wt% of white oil, 5 wt% -15 wt% of polyester elastomer, 5 wt% -10 wt% of inorganic permanent antistatic agent, 5 wt% -10 wt% of high-molecular permanent antistatic agent, 0.1 wt% -1 wt% of opening agent, 0.1 wt% -1 wt% of lubricant and 0.1 wt% -1 wt% of antioxidant, wherein the opening agent comprises nano silicon dioxide.
Preferably, the polyester-based elastomer includes any one or a combination of two or more of a polyester-based polyurethane elastomer, a polyether-based polyurethane elastomer, and an aliphatic-based polyurethane elastomer, but is not limited thereto.
Preferably, the inorganic permanent antistatic agent includes any one or a combination of two or more of potassium perchlorate, ammonium perchlorate, lithium perchlorate and beryllium perchlorate, but is not limited thereto.
Preferably, the polymeric permanent antistatic agent includes any one or a combination of two or more of polyolefin polymer antistatic agents and polyoxyethylene ether antistatic agents, but is not limited thereto.
Furthermore, the nano-silica (commonly called white carbon black) is spherical particles with the diameter of 100-500 nm.
Preferably, the lubricant includes one or more of oleamide, erucamide, zinc stearate, calcium stearate, ethylene bis stearamide, polyethylene wax and polydimethylsiloxane, but is not limited thereto.
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 thermoplastic polyurethane elastomer material containing the antistatic master batch, which comprises the following steps:
the method comprises the following steps: dissolving white oil in a polyester type polyurethane elastomer, and stirring for 15mins at room temperature until the white oil is completely absorbed by the polyester type polyurethane elastomer to prepare a first mixture;
step two: and adding an inorganic permanent antistatic agent, a high-molecular permanent antistatic agent, a mouth-opening agent, a lubricant and an antioxidant into the first mixture, and stirring at normal temperature for 10mins to obtain the thermoplastic polyurethane elastomer material containing the antistatic master batch.
Further, a 48:1 double-screw extruder is adopted for extrusion granulation processing and forming, wherein the temperature of extrusion granulation is 100-300 ℃.
Further, a 48:1 double-screw extruder is adopted for extrusion granulation processing and forming, wherein the temperature of extrusion granulation is 185 ℃.
The polymer type permanent antistatic agent used in the invention is a novel antistatic agent researched and developed in recent years, and belongs to a hydrophilic polymer. After the polymer is blended with a polymer matrix, on one hand, due to the strong movement capability of molecular chains, protons can move between molecules conveniently, and generated static charges are conducted and released through ion conduction; on the other hand, the antistatic ability is exhibited by its particular dispersed form. The polymeric permanent antistatic agent used in the present invention is mainly distributed in a fine layer or a rib form on the surface layer of a polymer product to form a conductive surface layer, and is distributed in a nearly spherical form in the center portion to form a so-called "core-shell structure", and static charge leaks through the core-shell structure. The polymer type permanent antistatic agent achieves the antistatic effect by reducing the volume resistivity of the material, does not completely depend on surface water absorption, and is less influenced by the humidity of the environment.
The technical solution of the present invention is further explained below with reference to several examples.
Comparative examples
The method comprises the following steps: dissolving 100g of white oil in 100g of polyester type polyurethane elastomer, and stirring for 15mins at room temperature until the white oil is completely absorbed by the polyester type polyurethane elastomer to prepare a first mixture;
step two: and adding 3g of white carbon black, 1g of zinc stearate and 1g of antioxidant 1076 into the first mixture, and stirring at normal temperature for 10mins to obtain the thermoplastic polyurethane elastomer material containing the antistatic master batch.
Example 1
The method comprises the following steps: dissolving 100g of white oil in 100g of polyester type polyurethane elastomer, and stirring for 15mins at room temperature until the white oil is completely absorbed by the polyester type polyurethane elastomer to prepare a first mixture;
step two: adding 3g of white carbon black, 1g of zinc stearate, 50g of polyolefin antistatic agent, 50g of perchloric acid antistatic agent, 50g of polyoxyethylene ether antistatic agent and 1g of antioxidant 1076 into the first mixture, and stirring at normal temperature for 10mins to obtain the thermoplastic polyurethane elastomer material containing the antistatic master batch.
Extruding, granulating and processing into a shape by adopting a 48:1 double-screw extruder, wherein the temperature of extrusion granulation is 185 ℃.
Example 2
The method comprises the following steps: dissolving 100g of white oil in 100g of polyester type polyurethane elastomer, and stirring for 15mins at room temperature until the white oil is completely absorbed by the polyester type polyurethane elastomer to prepare a first mixture;
step two: and adding 3g of white carbon black, 1g of zinc stearate, 50g of perchloric acid antistatic agent, 50g of polyoxyethylene ether antistatic agent and 1g of antioxidant 1076 into the first mixture, and stirring at normal temperature for 10 minutes to obtain the thermoplastic polyurethane elastomer material containing the antistatic master batch.
Extruding, granulating and processing into a shape by adopting a 48:1 double-screw extruder, wherein the temperature of extrusion granulation is 185 ℃.
Example 3
The method comprises the following steps: dissolving 100g of white oil in 100g of polyester type polyurethane elastomer, and stirring for 15mins at room temperature until the white oil is completely absorbed by the polyester type polyurethane elastomer to prepare a first mixture;
step two: and adding 3g of white carbon black, 1g of zinc stearate, 50g of polyolefin antistatic agent, 50g of polyoxyethylene ether antistatic agent and 1g of antioxidant 1076 into the first mixture, and stirring at normal temperature for 10 minutes to obtain the thermoplastic polyurethane elastomer material containing the antistatic master batch.
Extruding, granulating and processing into a shape by adopting a 48:1 double-screw extruder, wherein the temperature of extrusion granulation is 185 ℃.
Example 4
The method comprises the following steps: dissolving 100g of white oil in 100g of polyester type polyurethane elastomer, and stirring for 15mins at room temperature until the white oil is completely absorbed by the polyester type polyurethane elastomer to prepare a first mixture;
step two: and adding 3g of white carbon black, 1g of zinc stearate, 50g of polyolefin antistatic agent, 50g of perchloric acid antistatic agent and 1g of antioxidant 1076 into the first mixture, and stirring at normal temperature for 10mins to obtain the thermoplastic polyurethane elastomer material containing the antistatic master batch.
Extruding, granulating and processing into a shape by adopting a 48:1 double-screw extruder, wherein the temperature of extrusion granulation is 185 ℃.
The antistatic index refers to the surface resistivity, and the measurement standard is ASTM D-257, and the unit is ohm (omega), and the antistatic index greatly changes with factors such as the temperature and the relative humidity of the surrounding gas medium.
Resistance value less than 1011Omega products are antistatic products, and the resistance value of the antistatic products is 106Ω～109Omega, because of the resistance value is lower, antistatic product has the electrically conductive function, can discharge static.
Resistance value greater than 1012Omega products are insulating products, are easy to generate static electricity and cannot discharge electricity.
The testing equipment is a surface resistivity/grounding resistance tester with a measuring range of 103-1012Omega, test resistance value below 103Ω, showing: lr; test resistance value higher than 1012Ω, showing: hr.
And (3) granulating the thermoplastic polyurethane elastomer material containing the antistatic master batch prepared in the comparative example and the examples 1 to 4, drying at 90 ℃ for 2h, processing and molding at 180 ℃ by adopting an injection molding machine template, sealing the template for three years, and continuously testing the surface resistivity of the template after three years. The results of testing the surface resistivity of the sample according to astm d-257 are shown in table 1 below.
TABLE 1
As can be seen from Table 1, the thermoplastic polyurethane elastomer material containing the antistatic master batch provided by the invention has the advantages of easiness in processing, easiness in dispersion and lasting antistatic effect.
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. The thermoplastic polyurethane elastomer material containing the antistatic master batch is characterized by comprising the following components in percentage by weight: 5 wt% -25 wt% of white oil, 5 wt% -15 wt% of polyester elastomer, 5 wt% -10 wt% of inorganic permanent antistatic agent, 5 wt% -10 wt% of high-molecular permanent antistatic agent, 0.1 wt% -1 wt% of opening agent, 0.1 wt% -1 wt% of lubricant and 0.1 wt% -1 wt% of antioxidant, wherein the opening agent comprises nano silicon dioxide.
2. The thermoplastic polyurethane elastomer material containing the antistatic master batch according to claim 1, characterized in that: the polyester type elastomer comprises any one or the combination of more than two of polyester type polyurethane elastomer, polyether type polyurethane elastomer and aliphatic type polyurethane elastomer.
3. The thermoplastic polyurethane elastomer material containing the antistatic master batch according to claim 1, characterized in that: the inorganic permanent antistatic agent comprises one or the combination of more than two of potassium perchlorate, ammonium perchlorate, lithium perchlorate and beryllium perchlorate.
4. The thermoplastic polyurethane elastomer material containing the antistatic master batch according to claim 1, characterized in that: the polymer permanent antistatic agent comprises one or more of polyolefin polymer antistatic agent and polyoxyethylene ether antistatic agent.
5. The thermoplastic polyurethane elastomer material containing the antistatic master batch according to claim 1, characterized in that: the nano silicon dioxide is spherical particles with the diameter of 100-500 nm.
6. The thermoplastic polyurethane elastomer material containing the antistatic master batch according to claim 1, characterized in that: the lubricant comprises any one or the combination of more than two of oleamide, erucamide, zinc stearate, calcium stearate, ethylene bis stearamide, polyethylene wax and polydimethylsiloxane.
7. The thermoplastic polyurethane elastomer material containing the antistatic master batch according to claim 1, characterized in that: the antioxidant comprises any one or combination of more than two of hindered phenol antioxidants, hindered amine antioxidants and phosphite antioxidants.
8. A method for preparing the thermoplastic polyurethane elastomer material containing the antistatic master batch of any one of claims 1 to 7, which is characterized by comprising the following steps:
the method comprises the following steps: dissolving white oil in a polyester type polyurethane elastomer, and stirring for 15mins at room temperature until the white oil is completely absorbed by the polyester type polyurethane elastomer to prepare a first mixture;
step two: and adding an inorganic permanent antistatic agent, a high-molecular permanent antistatic agent, a mouth-opening agent, a lubricant and an antioxidant into the first mixture, and stirring at normal temperature for 10mins to obtain the thermoplastic polyurethane elastomer material containing the antistatic master batch.
9. The method for preparing the thermoplastic polyurethane elastomer material containing the antistatic master batch according to claim 8, wherein the method comprises the following steps: extruding, granulating and processing into a shape by adopting a 48:1 double-screw extruder, wherein the temperature of the extrusion granulation is 100-300 ℃.
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