CN102604311B - Electroconductive thermoplastic elastomer composition as well as preparation method and applications thereof - Google Patents
Electroconductive thermoplastic elastomer composition as well as preparation method and applications thereof Download PDFInfo
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- CN102604311B CN102604311B CN201110462205.8A CN201110462205A CN102604311B CN 102604311 B CN102604311 B CN 102604311B CN 201110462205 A CN201110462205 A CN 201110462205A CN 102604311 B CN102604311 B CN 102604311B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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Abstract
The invention provides an electroconductive thermoplastic elastomer composition with an excellent electroconductive performance, which is formed by the mixing of the following raw materials in parts by weight: 30-50 parts of oil charge SEBS (Styrene-Ethylene/Butylene-Styrene) elastomer, 10-20 parts of PP (propene polymer) powder, 20-45 parts of electroconductive carbon black, 3-5 parts of carbon black dispersing agent, and 3-5 parts of anti-adhesive agent, wherein the oil charge SEBS elastomer is formed by blending of an SEBS elastomer and naphthenic base charge oil according to the weight proportion of 1 to 3. The electroconductive thermoplastic elastomer composition with the excellent electroconductive performance is especially suitable for an electroconductive thermoplastic elastomer in manufacturing an anti-clamping strip in an automobile door.
Description
Technical field
The present invention relates to a kind of conductive thermoplastic elastomer composition with excellent conductive capability, especially a kind of SEBS thermoplastic elastomer; Also and relate to its preparation method and concrete purposes; Belong to the technical field of compositions of macromolecular compound.
Background technology
Thermoplastic elastomer is called for short TPE, has the elasticity of rubber under normal temperature, has plasticization moulding under high temperature; Its product had both possessed the snappiness of traditional cross-linking vulcanized rubber, ageing-resistant, the every excellent properties of oil-proofness, possessed again the feature that common plastics is easy to process, processing mode is wide simultaneously.Can adopt injection moulding, extrude, the processing mode such as blowing produces, waste material pulverize after 100% direct secondary use.Both simplified the course of processing, cut down finished cost again, therefore thermoplastic elastomer TPE material has become and has replaced the Latest Materials of traditional rubber, its environmental protection, nontoxic, hand feel and drape, exquisite appearance, being high-grade novel synthetic material, is also current consistent generally acknowledged environment-friendly materials in the world.SEBS thermoplastic elastomer is a kind of novel thermoplastic elastomer, is taking SEBS as major ingredient, the composition forming with other raw material blend such as PP powder.SEBS is taking polystyrene as end segment, and the ethylene-butene copolymer obtaining taking polyhutadiene hydrogenation is the linearity three embedding multipolymers of middle elastomeric block.SEBS, containing unsaturated double-bond, does not therefore have satisfactory stability and ageing resistance.
In some occasion, elastomer material is required to have good conductivity, as the conductive layer as perception in automobile electric sliding door anti-pinch induction bar.What original this conductive layer generally adopted is conduction terpolymer EP rubber (EPDM) material, because this material can not reclaim, does not meet environmental requirement, so be required to replace with thermoplastic elastomer; And common thermoplastic elastic material belongs to the material of insulation, although also conductive thermoplastic elastomer is peddled by some businessman on market, but be exactly other material of antistatic-level in fact at the conductive thermoplastic elastomer of selling, its material resistance, can not be as normal conduction substantially all more than megohm level.Thermoplastic elastic material comprises SEBS thermoplastic elastomer in addition, under high atmospheric temperature, in the time that originally two thermoplastic elastomer goods of moulding are encountered together respectively, between two thermoplastic elastomer goods, can be bonded together, cannot make shape separately by former.
Summary of the invention
Technical problem to be solved by this invention is for the above-mentioned state of the art, provides a kind of conductive thermoplastic elastomer composition with excellent conductive capability, especially a kind of SEBS thermoplastic elastomer; And further provide its preparation method and concrete purposes.The present invention solves the problems of the technologies described above adopted technical scheme:
A kind of conductive thermoplastic elastomer composition, is characterized in that, comprises that the raw material blend of following component and weight proportion forms:
Described oil-filled SEBS elastomerics is formed by the blend of 1 to 3 weight proportion by SEBS elastomerics and cycloalkanes base system extending oil, and described antiseized agent is the type siloxane polymkeric substance with ultra-high molecular weight.
It is below its further scheme.
Described composition for thermoplastic elastomer, is characterized in that, also comprises that weight proportion is the oxidation inhibitor of 0.5-2 in described raw material.
Described oxidation inhibitor is Hinered phenols antioxidant irganox1010 or irganox1076 or irganox1790.
Described carbon black dispersant is the composite base polymer of polyol ester.
In described raw material, also comprise that weight proportion is the PE wax of 0.5-2.
The concrete scheme of described composition for thermoplastic elastomer is also best proportioning simultaneously, comprises that the raw material blend of following component and weight proportion forms:
Further scheme, also comprises in described raw material that weight proportion is 1 PE wax.
A method of preparing above-mentioned composition for thermoplastic elastomer, is characterized in that, comprises the steps:
A, calculate the required weight of each component by weight ratio, take each component raw material by calculating gained;
B, each component material is put into mixing machine stirring and evenly mixing;
C, the raw material mixing is put into parallel dual-screw extruding machine complete and extrude, extruder screw diameter is selected according to output size, and screw slenderness ratio is 36-46, and screw speed is 200U/min-350U/min, and extrusion temperature is controlled at 160 DEG C to 200 DEG C;
D, make extruded stock carry out coolingly through cooling trough, cut off and obtain composition for thermoplastic elastomer finished product.
Composition for thermoplastic elastomer as above is for making the conductive elastomer of arrangements for automotive doors anti-biting bar.
The present invention has solved the existing technical problem of prior art completely; Conductive thermoplastic elastomer composition provided by the present invention, compared with conduction terpolymer EP rubber (EPDM) material of original employing, has returnability, is consistent generally acknowledged environment-friendly materials in the world at present, and its complete processing is also fairly simple; Compared with the antistatic-level conductive thermoplastic elastomer of peddling in the market, adding of conductive carbon black makes it have good conductivity, and under normal temperature state, the resistance of its finished product, below 500 ohm, can meet conductivity requirement completely; And carbon black dispersant makes it have uniform electroconductibility; Antiseized agent adds, make it have good antiseized, even if its finished product under 80 DEG C of high temperature strained conditiones, can not produce sticky connection phenomenon yet between its finished product.In addition, its preparation technology is fairly simple, separately configuration device; Especially be suitable for making the conductive elastomer in arrangements for automotive doors anti-biting bar.
Brief description of the drawings
Fig. 1 is automobile electric sliding door anti-pinch induction sliver transvers section schematic diagram.
Fig. 2 is that power-operated sliding door chance is clamped state anti-pinch induction sliver transvers section schematic diagram;
Fig. 3 is that twin screw extruder is extruded preparation conductive thermoplastic elastomer composition of the present invention interior each regional temperature distribution schematic diagram on opportunity.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.The conductive thermoplastic elastomer of following examples is used for making the conductive layer as perception in automobile electric sliding door anti-pinch induction bar.
Automobile electric sliding door anti-pinch induction bar basic structure as shown in Figure 1, outer ring 1 is insulating layer and thermoplastic elastomer, two conductive thermoplastic elastomers 2 are set in circle, every conductive thermoplastic elastomer 2 is all connected with wire 3, wire 3 is connected with power-operated sliding door driving governor, between two conductive thermoplastic elastomers 2, form interstice coverage, not conducting between usual two conductive thermoplastic elastomers 2.In the time having people or article to be pressed from both sides in car door sliding process, induction bar outer ring 1 is subject to pressing from both sides power F effect distortion, two conductive thermoplastic elastomers 2 are contacted, as shown in Figure 2, like this, just make conducting between two conductive thermoplastic elastomers 2, the control of power-operated sliding door driving governor its stall of slide drive-motor or reversion.
Be below conductive thermoplastic elastomer composition properties index request of the present invention:
| Test item | Test method/standard | Index |
| Hardness (15s) | ASTM D2240 (15S reading) | 90+/-5A |
| Tensile strength | ASTM?D412(200mm/min) | ≥5MPa |
| Unit elongation | ASTM?D412(200mm/min) | ≥50％ |
| Product initial resistance | 23 DEG C, |
≤300Ω |
| Resistance after thermal ageing | 80 DEG C, |
≤300Ω |
| Low temperature cold pressing after resistance | -30 DEG C, |
≥2000Ω |
| Resistance after high temperature hot pressing | 80 DEG C, method 4 (4) | ≥2000Ω |
Testing method:
(1) wire 3 of anti-pinch being responded to two conductive thermoplastic elastomers 2 of bar product is connected on universal meter, applies at normal temperatures the power of 10N with the pole that diameter is 4mm, and the resistance of three different points on test products, stablizes after 1 second and carry out reading;
(2) aging 500h at 80 DEG C, after product takes out, room temperature is placed 3 hours, then the wire of product 3 is connected on universal meter, applies the power of 10N with the pole that diameter is 4mm, and the resistance of three differences on test products, stablizes after 1 second and carries out reading;
(3) aging 72h at-30 DEG C, the while applies the power of 20N on product with the pole that diameter is 4mm, after product takes out, by pressure release, use the resistance of three differences on universal meter test products;
(4) aging 72h at 80 DEG C, the while applies the power of 20N on product with the pole that diameter is 4mm, after product takes out, by pressure release, use the resistance of three differences on universal meter test products.
Reach above-mentioned requirements, can meet the performance requriements to automobile electric sliding door anti-pinch induction bar at extreme climate environment all over the world.
Embodiment mono-
Composition for thermoplastic elastomer in the present embodiment comprises that the raw material blend of following component and weight proportion forms: 30 parts, oil-filled SEBS elastomerics, 10 parts, PP powder, 20 parts of conductive carbon blacks, 3 parts of carbon black dispersants, 3 parts of antiseized agent, 0.5 part, oxidation inhibitor, 0.5 part, PE wax; Wherein oil-filled SEBS elastomerics is formed by the blend of 1 to 3 weight proportion by SEBS elastomerics and cycloalkanes base system extending oil; Wherein oxidation inhibitor is Hinered phenols antioxidant irganox1010 or irganox1076 or irganox1790; Wherein carbon black dispersant is the composite base polymer of polyol ester, and the concrete available trade mark is sup1400 or epl-3; Wherein antiseized agent is the type siloxane polymkeric substance with ultra-high molecular weight, and the concrete available trade mark is sf-1 or mb50-002.
Specifically preparation as follows:
A, calculate the required weight of each component by weight ratio, take each component raw material by calculating gained; Note accurate-metering, control error is less than 0.5%;
B, each component material is put into mixing machine stirring and evenly mixing; Should adopt middling speed to mix, control mixing machine rotating speed on per minute 120 right side of turning left, the time was controlled at about 8 minutes;
C, the raw material mixing is put into parallel dual-screw extruding machine complete and extrude, extruder screw diameter is selected according to output size, screw slenderness ratio is 36-46, screw speed is 200U/min-350U/min, extrusion temperature is controlled at 160 DEG C to 200 DEG C, gradually raise from charging zone to head district, wherein charging zone temperature is controlled at 160 DEG C to 170 DEG C, and head district temperature is controlled at 190 DEG C to 200 DEG C.Specifically as shown in Figure 3.
D, make extruded stock carry out coolingly through cooling trough, cut off and obtain composition for thermoplastic elastomer finished product.
The automobile electric sliding door anti-pinch induction bar that uses the composition for thermoplastic elastomer in the present embodiment, can reach These parameters requirement after tested.
Embodiment bis-
Composition for thermoplastic elastomer in the present embodiment comprises that the raw material blend of following component and weight proportion forms: 40 parts, oil-filled SEBS elastomerics, 18 parts, PP powder, 32 parts of conductive carbon blacks, 4 parts of carbon black dispersants, 4 parts of antiseized agent, 1 part, oxidation inhibitor, 1 part, PE wax.Identical with embodiment mono-, wherein oil-filled SEBS elastomerics is formed by the blend of 1 to 3 weight proportion by SEBS elastomerics and cycloalkanes base system extending oil; Wherein oxidation inhibitor is Hinered phenols antioxidant irganox1010 or irganox1076 or irganox1790; Wherein carbon black dispersant is the composite base polymer of polyol ester, and the concrete available trade mark is sup1400 or epl-3; Wherein antiseized agent is the type siloxane polymkeric substance with ultra-high molecular weight, and the concrete available trade mark is sf-1 or mb50-002.Its preparation method and application are also with reference to embodiment mono-.The present embodiment is priority scheme, and the composition for thermoplastic elastomer conductivity the best making by the present embodiment is used the automobile electric sliding door anti-pinch of the composition for thermoplastic elastomer in the present embodiment to respond to bar, and its test index is also best.
Embodiment tri-
Composition for thermoplastic elastomer in the present embodiment comprises that the raw material blend of following component and weight proportion forms: 50 parts, oil-filled SEBS elastomerics, 20 parts, PP powder, 45 parts of conductive carbon blacks, 5 parts of carbon black dispersants, 5 parts of antiseized agent, 2 parts, oxidation inhibitor, 2 parts, PE wax.Other is all same as the previously described embodiments.The automobile electric sliding door anti-pinch induction bar that uses the composition for thermoplastic elastomer in the present embodiment, can reach These parameters requirement after tested equally.
Claims (9)
1. a conductive thermoplastic elastomer composition, is characterized in that, comprises that the raw material blend of following component and weight proportion forms:
Described oil-filled SEBS elastomerics is formed by 1 to 3 weight proportion blend by SEBS elastomerics and cycloalkanes base system extending oil,
Described antiseized agent is the type siloxane polymkeric substance with ultra-high molecular weight.
2. composition for thermoplastic elastomer as claimed in claim 1, is characterized in that, also comprises that weight proportion is the oxidation inhibitor of 0.5-2 in described raw material.
3. composition for thermoplastic elastomer as claimed in claim 2, is characterized in that, described oxidation inhibitor is Hinered phenols antioxidant irganox1010 or irganox1076 or irganox1790.
4. composition for thermoplastic elastomer as claimed in claim 1, is characterized in that, described carbon black dispersant is the composite base polymer of polyol ester.
5. the composition for thermoplastic elastomer as described in claim 1 to 4 any one, is characterized in that, also comprises that weight proportion is the PE wax of 0.5-2 in described raw material.
6. the composition for thermoplastic elastomer as described in claim 1 to 4 any one, is characterized in that, comprises that the raw material blend of following component and weight proportion forms:
7. composition for thermoplastic elastomer as claimed in claim 6, is characterized in that, also comprises that weight proportion is 1 PE wax in described raw material.
8. a method of preparing the composition for thermoplastic elastomer described in claim 1-7 any one, is characterized in that, comprises the steps:
A, calculate the required weight of each component by weight ratio, take each component raw material by calculating gained;
B, each component material is put into mixing machine stirring and evenly mixing;
C, the raw material mixing is put into parallel dual-screw extruding machine complete and extrude, extruder screw diameter is selected according to output size, and screw slenderness ratio is 36-46, and screw speed is 200U/min-350U/min, and extrusion temperature is controlled at 160 DEG C to 200 DEG C:
D, make extruded stock carry out coolingly through cooling trough, cut off and obtain composition for thermoplastic elastomer finished product.
In claim 1-7 the composition for thermoplastic elastomer described in any one claim for making the conductive elastomer of arrangements for automotive doors anti-biting bar.
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103225465B (en) * | 2012-12-13 | 2016-04-27 | 宁波敏实汽车零部件技术研发有限公司 | A kind of for automobile electric sliding door anti-pinch press strip |
| CN106867115B (en) * | 2017-04-19 | 2020-09-01 | 哈尔滨理工大学 | Semiconductive inner shielding material of polypropylene copolymer insulated cable and preparation method thereof |
| CN107266780B (en) * | 2017-07-31 | 2020-08-07 | 江苏德威新材料股份有限公司 | Non-crosslinked semiconductive shielding material for power cable and preparation method thereof |
| CN108437260B (en) * | 2018-04-28 | 2023-10-13 | 合诚技术股份有限公司 | Thermoplastic elastomer oil filling equipment |
| CN108864594B (en) * | 2018-06-01 | 2020-12-04 | 联塑科技发展(武汉)有限公司 | Antistatic PVC-U sewage discharge pipe for underground mine and preparation method thereof |
| CN109575582A (en) * | 2018-12-18 | 2019-04-05 | 苏州长振新材料科技有限公司 | The conductive thermoplastic elastomer and preparation method thereof of encapsulated polyamide |
| CN109851977A (en) * | 2019-02-13 | 2019-06-07 | 苏州长振新材料科技有限公司 | The conductive thermoplastic elastomer and preparation method thereof of encapsulated polycarbonate |
| CN110395097B (en) * | 2019-08-06 | 2022-11-22 | 河北沃美诺自动化科技有限公司 | Preparation method of environment-friendly induction anti-pinch strip |
| CN110317426B (en) * | 2019-08-06 | 2022-03-08 | 河北沃美诺自动化科技有限公司 | Preparation method of environment-friendly induction anti-pinch conductive rubber strip |
| TWI738329B (en) * | 2020-05-11 | 2021-09-01 | 臻鼎科技股份有限公司 | Conductive ink and conductive element with tensile property |
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