CN110791058A - Preparation method of TPEE composite material - Google Patents
Preparation method of TPEE composite material Download PDFInfo
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- CN110791058A CN110791058A CN201911047040.0A CN201911047040A CN110791058A CN 110791058 A CN110791058 A CN 110791058A CN 201911047040 A CN201911047040 A CN 201911047040A CN 110791058 A CN110791058 A CN 110791058A
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- tpee
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- potassium titanate
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- titanate whisker
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
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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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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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
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/04—Thermoplastic elastomer
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application discloses a preparation method of a TPEE composite material, which sequentially comprises the following steps: s1, preparing the following raw materials in parts by weight: 50-95 parts of TPEE, 5-50 parts of conductive potassium titanate whisker fiber, 0.1-2 parts of compatilizer and 0-2 parts of processing aid; s2, mixing the TPEE, the compatilizer and the processing aid in a rotary mixer, then feeding the mixture from a main feed opening of a double-screw extruder, feeding the conductive potassium titanate whisker fiber from a side feed opening of the double-screw extruder through a feeder, and carrying out melt mixing extrusion granulation. The invention has the advantages that the conductive potassium titanate whisker fiber is added into the TPEE, and the TPEE composite material with antistatic property, high wear resistance, high elasticity and no precipitation is prepared by melt blending, extrusion and granulation.
Description
Technical Field
The invention relates to the field of thermoplastic elastomer composites, in particular to a preparation method of a TPEE composite.
Background
Thermoplastic polyester elastomer (TPEE), also called polyester rubber, is a linear block copolymer containing PBT (polybutylene terephthalate) polyester hard segments and aliphatic polyester or polyether soft segments. TPEE has excellent elasticity of rubber and easy processability of thermoplastic plastics, has adjustable hardness and free design, and is a new variety which is concerned by the thermoplastic elastomer. The TPEE has excellent bending fatigue resistance, heat resistance, low-temperature impact resistance, good tear resistance and wear resistance. As TPEE has comprehensive properties of outstanding mechanical strength, excellent resilience, wide use temperature and the like, the TPEE is widely applied to the fields of automobile parts, hydraulic hoses, cable wires, electronic and electric products, industrial products, stationery, biological materials and the like.
The vacuum chuck is also called as a vacuum sling, and is one of vacuum equipment actuators. Generally, gripping an article with a vacuum chuck is one of the least expensive methods.
The rubber and plastic have electrical insulation, and static electricity accumulation can be generated when the rubber and plastic are contacted with or rubbed with other materials. If the accumulated static electricity is not eliminated in time, the static electricity can be adsorbed, dust can be sucked, spark discharge can be caused, and combustion and explosion can be caused. The methods for eliminating static electricity include a conductive material (conductive carbon black, metal powder, etc.) filling method, a conductive device method, and an antistatic agent.
Conductive potassium titanate whisker fibers (DENTALL) are conductive potassium titanate fibers obtained by subjecting the surfaces of potassium titanate whiskers to a conductive treatment. The average fiber diameter is 0.3-0.7 μm, the average fiber length is 10-20 μm, and the fiber has the advantages of high strength, high elasticity, high length-diameter ratio, excellent reinforcing performance, and stable resistance value.
In the field of vacuum chucks, particularly chip manufacturing, the material of the chuck needs to have the performances of antistatic performance, high elasticity, low precipitation, good air tightness and the like, and the traditional vacuum chuck is made of rubber such as EPDM (ethylene-propylene-diene monomer), nitrile rubber and the like. When the conductive carbon black is used for antistatic treatment, the elasticity of the material is obviously reduced, oil is needed to be added to reduce the viscosity and increase the elasticity, but precipitates are increased. When the antistatic agent is used for antistatic treatment, the antistatic effect is not durable, the environmental influence is large, and the mechanical strength of the material is obviously reduced.
Disclosure of Invention
The conductive potassium titanate whisker fiber is added into the TPEE, so that the conductivity of the TPEE can be improved, the viscosity and the elasticity of the TPEE are not obviously influenced, the wear resistance of the TPEE can be improved, and the conductive potassium titanate whisker fiber is an inorganic material and does not have the problem of precipitation; compared with common rubber, the TPEE has better air tightness and is suitable for manufacturing a vacuum chuck; the invention adopts conductive potassium titanate whisker fiber to be added into TPEE, and prepares the TPEE composite material with static resistance, high wear resistance, high elasticity and no precipitation through melt blending extrusion granulation.
In order to achieve the above object, the present invention provides the following technical solutions.
The embodiment of the application discloses a preparation method of a TPEE composite material, which sequentially comprises the following steps:
the method sequentially comprises the following steps:
s1, preparing the following raw materials in parts by weight: 50-95 parts of TPEE, 5-50 parts of conductive potassium titanate whisker fiber, 0.1-2 parts of compatilizer and 0-2 parts of processing aid;
s2, mixing the TPEE, the compatilizer and the processing aid in a rotary mixer, then feeding the mixture from a main feed opening of a double-screw extruder, feeding the conductive potassium titanate whisker fiber from a side feed opening of the double-screw extruder through a feeder, and carrying out melt mixing extrusion granulation.
Preferably, in the above method for preparing a TPEE composite, the TPEE is a type represented by dupont Hytrel having polytetrahydrofuran polyether as a soft segment, or a type represented by Arnitel, DSM company, having aliphatic polyester as a soft segment.
Preferably, in the above method for preparing TPEE composite, the conductive potassium titanate whisker fiber is DENTALLWK series.
Preferably, in the preparation method of the TPEE composite material, the compatilizer is one or two of GMA grafted SBS and SEBS, and the grafting rate is 0.1-3%.
Preferably, in the above method for preparing the TPEE composite material, the processing aid is one or more of ester stearic acid, metal soap, calcium stearate, zinc stearate, pentaerythritol stearate or silicone master batch.
Preferably, in the preparation method of the TPEE composite material, the rotating speed of the rotary mixer is 60-120 rpm, the mixing time is 5-10 min, the output of the double-screw extruder is 100-300 Kg/h, the rotating speed is 200-400 rpm, the temperature of a machine barrel is 200 +/-20 ℃, the temperature of a machine head is 210 +/-10 ℃, and the extraction pressure of a vacuum section is-0.08 +/-0.02 MPa.
The invention has the advantages that the conductive potassium titanate whisker fiber is added into the TPEE, and the TPEE composite material with antistatic property, high wear resistance, high elasticity and no precipitation is prepared by melt blending, extrusion and granulation.
Detailed Description
Technical solutions in the embodiments of the present invention will be described in detail below, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The following example is illustrated using 2 sets of examples and compares the performance of the examples to a typical comparative example (NBR/30% conductive carbon black).
Example 1
S1, preparing the following raw materials in parts by weight: 88 parts of TPEE, 10 parts of conductive potassium titanate whisker fiber, 1 part of compatilizer and 1 part of processing aid;
s2, mixing the TPEE, the compatilizer and the processing aid in a rotary mixer, then feeding the mixture from a main feed opening of a double-screw extruder, feeding the conductive potassium titanate whisker fiber from a side feed opening of the double-screw extruder through a feeder, and carrying out melt mixing extrusion granulation. The rotating speed of the rotary mixer is 100rpm, the mixing time is 10min, the output of the double-screw extruder is 200Kg/h, the rotating speed is 300rpm, the barrel temperature is 200 ℃, the head temperature is 210 ℃, and the vacuum section extraction pressure is-0.08 MPa.
Example 2
S1, preparing the following raw materials in parts by weight: 67 parts of TPEE, 30 parts of conductive potassium titanate whisker fiber, 2 parts of compatilizer and 1 part of processing aid;
s2, mixing the TPEE, the compatilizer and the processing aid in a rotary mixer, then feeding the mixture from a main feed opening of a double-screw extruder, feeding the conductive potassium titanate whisker fiber from a side feed opening of the double-screw extruder through a feeder, and carrying out melt mixing extrusion granulation. The rotating speed of the rotary mixer is 100rpm, the mixing time is 10min, the output of the double-screw extruder is 200Kg/h, the rotating speed is 300rpm, the barrel temperature is 200 ℃, the head temperature is 210 ℃, and the vacuum section extraction pressure is-0.08 MPa.
In examples 1 and 2, TPEE is represented by dupont Hytrel having polytetrahydrofuran polyether as a soft segment, or by Arnitel, DSM, which is a soft segment containing an aliphatic polyester. The conductive potassium titanate whisker fiber is DENTALL WK series produced by Japanese Otsuka chemistry. The compatilizer is one or two of GMA grafted SBS or SEBS, and the grafting rate is 0.1-3%. The processing aid is one or more of ester stearic acid, metal soap, calcium stearate, zinc stearate, pentaerythritol stearate or silicone master batch.
The properties of examples 1-2 and a typical comparative example (NBR/30% conductive carbon black) were compared and the results are as follows:
| item | Example 1 | Example 2 | Comparative example |
| Shore hardness D | 43 | 45 | 60 |
| Tensile strength MPa | 32 | 48 | 35 |
| The rebound resilience% | 58 | 57 | 43 |
| Specific abrasion loss mm3/N·Km | 1.05 | 0.92 | 4.33 |
| Volume resistivity omega cm | 8.8E+9 | 1.3E+4 | 2.5E+10 |
| Air permeability | 3.5E-13 | 2.8E-13 | 5.5E-11 |
| Steaming the precipitate at high temperature | Is free of | Is free of | Is provided with |
The properties of the composite material prepared according to the invention can reach the following: the strength, dimensional stability, abrasion resistance, antistatic performance indices all exceed those of a typical comparative example (NBR/30% conductive carbon black).
The present embodiments are to be considered as illustrative and not restrictive, and the scope of the patent is to be determined by the appended claims.
Claims (6)
1. The preparation method of the TPEE composite material is characterized by sequentially comprising the following steps of:
s1, preparing the following raw materials in parts by weight: 50-95 parts of TPEE, 5-50 parts of conductive potassium titanate whisker fiber, 0.1-2 parts of compatilizer and 0-2 parts of processing aid;
s2, mixing the TPEE, the compatilizer and the processing aid in a rotary mixer, then feeding the mixture from a main feed opening of a double-screw extruder, feeding the conductive potassium titanate whisker fiber from a side feed opening of the double-screw extruder through a feeder, and carrying out melt mixing extrusion granulation.
2. The method of claim 1, wherein said TPEE is a type represented by dupont Hytrel having polytetrahydrofuran polyether as a soft segment, or a type represented by Arnitel, DSM company, having aliphatic polyester as a soft segment.
3. The method of claim 1, wherein said conductive potassium titanate whisker fibers are in the DENTALL WK series.
4. The preparation method of the TPEE composite material as claimed in claim 1, wherein the compatilizer is one or two of GMA grafted SBS and SEBS, and the grafting rate is 0.1-3%.
5. The method for preparing the TPEE composite material according to claim 1, wherein the processing aid is one or more of ester stearic acid, metal soaps, calcium stearate, zinc stearate, pentaerythritol stearate or silicone master batch.
6. The method of claim 1, wherein in step S2, the rotation speed of the rotary mixer is 60-120 rpm, the mixing time is 5-10 min, the output of the twin-screw extruder is 100-300 Kg/h, the rotation speed is 200-400 rpm, the barrel temperature is 200 + -20 ℃, the head temperature is 210 + -10 ℃, and the vacuum extraction pressure is-0.08 + -0.02 MPa.
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| CN201911047040.0A CN110791058A (en) | 2019-10-30 | 2019-10-30 | Preparation method of TPEE composite material |
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| CN201911047040.0A CN110791058A (en) | 2019-10-30 | 2019-10-30 | Preparation method of TPEE composite material |
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Citations (6)
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|---|---|---|---|---|
| US4351745A (en) * | 1980-01-09 | 1982-09-28 | E. I. Du Pont De Nemours And Company | Electrically conductive polyetherester elastomers |
| JP2004262988A (en) * | 2003-02-28 | 2004-09-24 | Kansai Paint Co Ltd | Method for forming highly white, pearly-tone multilayered coating film |
| JP2007147047A (en) * | 2005-11-30 | 2007-06-14 | Hi-Lex Corporation | Outer casing liner for control cable |
| CN102585446A (en) * | 2011-01-06 | 2012-07-18 | 合肥杰事杰新材料股份有限公司 | Heat conduction inflaming retarding thermoplastic polyeher ester elastomer composite and preparation method thereof |
| CN104520379A (en) * | 2013-06-19 | 2015-04-15 | Lg化学株式会社 | Thermoplastic polyester elastomer resin composition and molded product containing same |
| CN106567128A (en) * | 2016-06-12 | 2017-04-19 | 成都理工大学 | Electric conduction potassium titanate crystal whisker preparation method |
-
2019
- 2019-10-30 CN CN201911047040.0A patent/CN110791058A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4351745A (en) * | 1980-01-09 | 1982-09-28 | E. I. Du Pont De Nemours And Company | Electrically conductive polyetherester elastomers |
| CA1148347A (en) * | 1980-01-09 | 1983-06-21 | Henry J. Stinger | Electrically conductive polyetherester elastomers |
| JP2004262988A (en) * | 2003-02-28 | 2004-09-24 | Kansai Paint Co Ltd | Method for forming highly white, pearly-tone multilayered coating film |
| JP2007147047A (en) * | 2005-11-30 | 2007-06-14 | Hi-Lex Corporation | Outer casing liner for control cable |
| CN102585446A (en) * | 2011-01-06 | 2012-07-18 | 合肥杰事杰新材料股份有限公司 | Heat conduction inflaming retarding thermoplastic polyeher ester elastomer composite and preparation method thereof |
| CN104520379A (en) * | 2013-06-19 | 2015-04-15 | Lg化学株式会社 | Thermoplastic polyester elastomer resin composition and molded product containing same |
| CN106567128A (en) * | 2016-06-12 | 2017-04-19 | 成都理工大学 | Electric conduction potassium titanate crystal whisker preparation method |
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| 张大省等: "基于共聚醚酯的多功能纤维", 《纺织科学研究》 * |
| 戚亚光: "世界导电塑料工业化进展", 《塑料工业》 * |
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