CN104194283B - A kind of high-performance thermoplastic elastomer and processing method thereof - Google Patents
A kind of high-performance thermoplastic elastomer and processing method thereof Download PDFInfo
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- CN104194283B CN104194283B CN201410441154.4A CN201410441154A CN104194283B CN 104194283 B CN104194283 B CN 104194283B CN 201410441154 A CN201410441154 A CN 201410441154A CN 104194283 B CN104194283 B CN 104194283B
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Abstract
The present invention provides a kind of high-performance thermoplastic elastomer and processing method thereof, including each component of following weight portion: polyester elastomer TPEE:20 100 parts；Styrenic elastomer: 0 70 parts；Maleic anhydride-g-SBS: 0 30 parts；Rubber filling oil: 0 50 parts；Mineral powder: 0 40 parts；Stabilizer: 05 parts, can produce intensity height, the thermoplastic elastomer (TPE) of stable performance by different raw materials and proportioning, and the processing technique temperature of the present invention is wider than the processing technique temperature range for traditional TPU and alloy product thereof, at 190 260 DEG C.The screw head of extruder used can reduce melt temperature, reduces material and decomposes, and promotes that material uniformly mixes, and the product strength obtained is high, and stable performance, weather-proof anti-yellowing property is excellent, and encapsulation is excellent.
Description
Technical field
The invention belongs to macromolecule new material manufacturing technology field, particularly relate to a kind of stable performance, intensity high, weather-proof
The thermoplastic elastomer (TPE) that anti-yellowing property is excellent.
Background technology
Use at present generally thermoplastic polyurethane TPU and alloy elastic body thereof reach encapsulated ABS, PC/ABS, PMMA and
The purpose of PC etc., but TPU and alloy product thereof have the following disadvantages: and weather-proof anti-yellowing property is poor, and product is easy to change, nothing
Method meets outdoor and product colour is required high application；TPU working process parameter is big to the performance impact of product, TPU and
Alloy to heat and moisture-sensitive, easily decomposes, and causes product surface to have gas trace in the course of processing.Specifically, TPU and
Alloy be suitable for processing temperature the narrowest, generally at 190 degree to 220 degree, this make TPU and alloy thereof in injection moulding process, can
Scope with regulation temperature is extremely limited, and this is the most disadvantageous for injection.It is known that the raising of material injection temperature can
To improve the mobility of material, for some complex product and the product of thin-walled, improve temperature and increase mobility for injection one
The individual complete defective product that do not has is very important.But, the processing temperature scope of TPU and alloy thereof only has 190 degree to arrive
220 degree, it is impossible to apply at some complex products and thin-wall product.If the processing temperature of TPU and alloy thereof is too high, or at machine barrel
The time of staying is long, and material also can be caused to decompose, and causes surface gas trace, xanthochromia, even material physical property degradation.TPU
And the anti-yellowing property of alloy is excessively poor, can apply to outdoor products, light-coloured prods and color stability aspects hardly
High place.
Summary of the invention
The shortcoming of prior art in view of the above, present invention aim at providing a kind of high-performance thermoplastic elastomer and
Its processing method, is prone to processing, stable performance, thermoplastic elastic that intensity anti-yellowing property high, weather-proof is excellent for developing
Body.
For achieving the above object and other relevant purposes, the present invention provides a kind of high-performance thermoplastic elastomer, including with
Each component of lower weight portion: polyester elastomer TPEE:20-100 part；Styrenic elastomer: 0-70 part；Maleic anhydride is grafted
SEBS:0-30 part；Rubber filling oil: 0-50 part；Mineral powder: 0-40 part；Stabilizer: 0-5 part.
Preferably, the hardness of described polyester elastomer TPEE: 65A-65D, 230 DEG C, melt index under 2.16 kilograms:
5-100g/10min, described styrenic elastomer is high molecular SEBS or SEPS, solution viscosity 0.1-10pa.s, described rubber
Filling oil is paraffinic base rubber filling oil or naphthenic rubber filling oil, and 40 DEG C of kinematic viscositys are in 30-150cSt scope, and pour point is little
In-5 DEG C.
Preferably, the maleic anhydride content of described maleic anhydride-g-SBS is more than 0.5%.
Preferably, described mineral powder is calcium carbonate or Pulvis Talci, and the particle diameter of described mineral powder is 200 mesh-2000 mesh.
Preferably, described high-performance thermoplastic elastomer includes each component of following weight portion: polyester elastomer TPEE:
20-70 part；High molecular SEBS:10-40 part；Maleic anhydride-g-SBS: 2-30 part；Paraffinic base rubber filling oil: 10-40
Part；Stabilizer: 0-5 part.
Preferably, described high-performance thermoplastic elastomer includes each component of following weight portion: polyester elastomer TPEE:
20-100 part；SEPS:0-40 part；Maleic anhydride-g-SBS: 0-30 part；Naphthenic rubber is filled oily: 0-40 part；Pulvis Talci:
0-40 part；Stabilizer 0-5 part.
The processing method of a kind of high-performance thermoplastic elastomer, first by styrenic elastomer and the 0-40 of 0-70 weight portion
The rubber filling oil of weight portion is sufficiently mixed also oil suction 30 minutes；Add polyester elastomer TPEE, 0-of 20-100 weight portion
The maleic anhydride-g-SBS of 30 weight portions, the mineral powder of 0-40 weight portion, the stabilizer of 0-5 weight portion, mix homogeneously, then
Above-mentioned mixture is put into the feeding hopper of extruder carries out extrusion processing, carry out extrudate cooling down, pelletizing, screening process.
Preferably, described extruder be screw rod head be the double screw extruder of half rugby shape, the processing temperature of employing is
190℃-260℃。
As it has been described above, a kind of high-performance thermoplastic elastomer of the present invention and processing method thereof, have the advantages that
The structure of thermoplastic polyester elastomer and melt flow rate (MFR) have highly important for overall performance and the peel strength of material
Impact；The selection of SEBS and rubber filling oil is the most extremely important, and the structure of SEBS and molecular weight determine the mobile performance of material, tear
Resistance to spalling；The kinematic viscosity of rubber filling oil plays decisive role to apparent and feel, needs and SEBS carries out abundant oil suction
After mix with other compositions again；The interpolation of mineral powder is mainly used in reducing the cost of material；And improvement is played in the interpolation of stabilizer
Materials processing stability and the purpose in prolongation materials'use life-span；Pliability and the stripping of material can be improved by different proportionings
From intensity；The processing technique temperature of the present invention is for TPU and alloy product thereof, and scope is much broader, at 190-260
℃.The screw head of extruder used can reduce melt temperature, reduces material and decomposes, and promotes that material uniformly mixes, the product obtained
Product intensity is high, and stable performance, weather-proof anti-yellowing property is excellent, and encapsulation is excellent.
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention being described below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
Specific embodiment 1:
A kind of high-performance thermoplastic elastomer and processing method thereof, by SEBS and 10 weight portions of 10 weight portion high molecular
After paraffinic base rubber filling oil is sufficiently mixed also oil suction 30 minutes, because apparent and feel are risen by the kinematic viscosity of rubber filling oil
Decisive role, mix with other compositions again after needing to carry out abundant oil suction with high molecular SEBS, be subsequently added 70 weight
The polyester elastomer that part is arrived, the maleic anhydride-g-SBS of 5 weight portions, and the stabilizer of 5 weight portions, put in batch mixer and mix
Uniformly, then being put into by above-mentioned mixed material and carry out extrusion processing in the feeding hopper of extruder, the extruder used is
Screw rod head is the double screw extruder with high shear of half rugby shape, and screw speed is moderate, and too low rotating speed is unfavorable for producing
Product dispersed, and too high rotating speed can cause shearing risk that is excessively strong and that cause product physical property to decline.Adopted
Processing temperature be 230 DEG C.Product from extruder out after through supercooling process, then use pelleter product is carried out
Pelletizing, puts into screening machine by the granule formed after pelletizing and sieves.
Specific embodiment 2:
Changing the raw material in specific embodiment 1 and proportioning thereof into following ratio, component and weight portion is: polyester elastomer
TPEE:35 part；High molecular SEBS:30 part；Maleic anhydride-g-SBS: 2 parts；Paraffinic base rubber filling oil: 20 parts；Carbonic acid
Calcium: 13 parts.Procedure of processing is with reference to specific embodiment 1.
Specific embodiment 3:
Changing the raw material in specific embodiment 1 and proportioning thereof into following ratio, component and weight portion is: polyester elastomer
TPEE:50 part；SEPS:20 part；Maleic anhydride-g-SBS: 5 parts；Naphthenic rubber is filled oily: 20 parts；Pulvis Talci: 2.5 parts；
Stabilizer 2.5 parts.Procedure of processing is with reference to specific embodiment 1.
Specific embodiment 4:
Changing the raw material in specific embodiment 1 and proportioning thereof into following ratio, component and weight portion is: polyester elastomer
TPEE:40 part；High molecular SEBS:20 part；Maleic anhydride-g-SBS: 15 parts；Paraffinic base rubber filling oil: 15 parts；Carbonic acid
Calcium: 5 parts；Stabilizer 5 parts, the processing temperature used is respectively 190 DEG C, 230 DEG C and the product of 260 DEG C, remaining procedure of processing
With reference to specific embodiment 1.Choose product to test.
The hardness of the polyester elastomer TPEE that above example is used: 65A-65D, 230 DEG C, molten under 2.16 kilograms
Melt index: 5-100g/10min, high molecular SEBS used or SEPS, solution viscosity 0.1-10pa.s, the stone used
Cerul rubber filling oil or naphthenic rubber are filled 40 DEG C of kinematic viscositys of oil and are less than-5 DEG C at 30-150cSt scope, pour point.Horse
The maleic anhydride content of maleic anhydride grafted SEBS is more than 0.5%.Mineral powder may select calcium carbonate, Pulvis Talci, Kaolin, and glass is micro-
Pearls etc., particle diameter is at 200 mesh-2000 mesh.
The product that specific embodiment 1, specific embodiment 2, specific embodiment 3, specific embodiment 4 prepare is designated as RTP
TPE 1, RTP TPE 2, RTP TPE 3 and RTP TPE 4, carry out performance test, chooses several tradition TPU alloy, is labeled as
TPU alloy 1, TPU alloy 2, and choose 190 DEG C, 230 DEG C, the TPU that produces under the conditions of 260 DEG C of processing temperatures equally
Alloy 3, the product test performance comparison produced with this specific embodiment 4.Test result is as shown in the table:
Table 1. thermoplastic elastomer (TPE) of the present invention and the performance comparison of tradition TPU alloy
Table 2: thermoplastic elastomer (TPE) of the present invention and tradition TPU alloy processing characteristics contrast
Table 3: thermoplastic elastomer (TPE) of the present invention contrasts with the anti-yellowing property of tradition TPU alloy
| Tonal gradation | |
| RTP TPE 3 | 4 |
| TPU alloy 2 | 2 |
Density measurement in this test uses ASTMD 792 standard method of test, hot strength test to use ASTMD 412
Standard method of test, tearing strength uses ASTMD 624 standard method of test.Anti-yellowing property uses laboratory light source irradiation
ISO4892-3 standard is tested, the result gray scale representation recorded, tonal gradation is divided into 1,2,3,4,5 five kind of grade,
1 represents that anti-yellowing property is worst, and 5 represent that anti-yellowing property is best.From experimental data it can be seen that the present invention produce thermoplasticity
The intensity of elastomer is substantially better than tradition TPU and alloy product thereof, and yellowing resistance can be also good than tradition TPU and alloy thereof.Can from table 2
To find out, along with the raising of injection temperature in processing technique, the hot strength of the TPU alloy produced substantially reduces.
In sum, the present invention provides a kind of high-performance thermoplastic elastomer and processing method, the product strength produced
Height, stable performance, weather-proof anti-yellowing property is excellent, and encapsulation is excellent.So, the present invention effectively overcomes of the prior art
Various shortcoming and have high industrial utilization.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for limiting the present invention.Any ripe
Above-described embodiment all can be modified under the spirit and the scope of the present invention or change by the personage knowing this technology.Cause
This, have usually intellectual such as complete with institute under technological thought without departing from disclosed spirit in art
All equivalences become are modified or change, and must be contained by the claim of the present invention.
Claims (1)
1. the processing method of a high-performance thermoplastic elastomer, it is characterised in that: by the SEBS of 10 weight portion high molecular with
10 weight portion paraffinic base rubber filling oils are sufficiently mixed also oil suction 30 minutes, add the polyester elastomer of 70 weight portions, 5 weight portions
Maleic anhydride-g-SBS, and the stabilizer of 5 weight portions, put into mix homogeneously in batch mixer, then by above-mentioned mixed
Material is put into and is carried out extrusion processing in the feeding hopper of extruder, the extruder used be screw rod head be having of half rugby shape
The double screw extruder of high shear, screw speed is moderate, and the processing temperature used is 230 DEG C, product from extruder out
Process by supercooling, then use pelleter that product is carried out pelletizing, the granule formed after pelletizing is put into screening machine
Sieve, the hardness of described polyester elastomer TPEE: 65A-65D, at 230 DEG C, melt index under 2.16 kilograms: 5-
100g/10min, the solution viscosity of described high molecular SEBS is 0.1-10Pa s, and described paraffinic base rubber filling oil is at 40 DEG C
Kinematic viscosity in 30-150cSt scope, pour point is less than-5 DEG C, and the maleic anhydride content of described maleic anhydride-g-SBS is more than
0.5%.
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| CN108219483A (en) * | 2018-01-05 | 2018-06-29 | 慈溪市山今高分子塑料有限公司 | It is a kind of for TPE material of encapsulated POM and its preparation method and application |
| CN110894354A (en) * | 2018-09-12 | 2020-03-20 | 天津大学 | Hollow glass bead modified polyester thermoplastic elastic resin composite material and preparation method and application thereof |
| CN110951220B (en) * | 2019-11-19 | 2022-08-12 | 宁波市青湖弹性体科技有限公司 | High-performance thermoplastic elastomer capable of injection-molding and bonding polyformaldehyde and preparation method thereof |
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| CN1609140A (en) * | 2004-01-16 | 2005-04-27 | 徐绪峰 | Rubber with surface pattern for painting roller and roller making process |
| JP5144886B2 (en) * | 2005-10-05 | 2013-02-13 | アロン化成株式会社 | Resin composition |
| CN101550281B (en) * | 2009-04-29 | 2011-09-28 | 株洲时代工程塑料制品有限责任公司 | Method of preparing thermoplastic elastomer compound material and product thereof |
| CN102476440A (en) * | 2010-11-23 | 2012-05-30 | 合肥杰事杰新材料股份有限公司 | Extrusion equipment and extrusion processing method of thermoplastic polyester elastomer |
| CN102485792B (en) * | 2010-12-02 | 2015-02-11 | 合肥杰事杰新材料股份有限公司 | Environment-friendly flame-retardant cable material and preparation method thereof |
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| CN102558739B (en) * | 2011-04-21 | 2015-04-22 | 深圳市塑源实业有限公司 | Preparation method of TPE (thermoplastic elastomer) alloy material for PCTG bonding and encapsulating |
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