CN106967286A - Composition for preparing expansion type thermoplastic elastomer (TPE) and preparation method thereof, expansion type thermoplastic elastomer (TPE) and preparation method thereof - Google Patents
Composition for preparing expansion type thermoplastic elastomer (TPE) and preparation method thereof, expansion type thermoplastic elastomer (TPE) and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of composition for being used to prepare expansion type thermoplastic elastomer (TPE) and preparation method thereof.A kind of composition for being used to prepare expansion type thermoplastic elastomer (TPE), according to the mass fraction, including：75 parts~90 parts TPU；6 parts~15 parts crosslinked EVAs；1 part~5 parts mineral fillers；And 0.5 part~3 parts foaming agents.Because TPUE has excellent wearability and incompressible permanent deformation, crosslinked EVA has compression set low, the advantage of material lightweight can be realized after foaming, rational proportion is carried out, the expansion type thermoplastic elastomer (TPE) of excellent performance can be prepared.Through measuring, the expansion type thermoplastic elastomers prepared have the advantages that relatively low compression set is low, wear-resisting, tear-resistant excellent performance, also have the advantages that light weight；From elasticity and recovery capability good crosslinked EVA the anti-wear performance of expansion type thermoplastic elastomer (TPE) is also further improved simultaneously.
Description
Technical field
The present invention relates to thermoplastic elastomer (TPE) preparing technical field, more particularly to for preparing expansion type thermoplastic elastic
Composition of body and preparation method thereof, expansion type thermoplastic elastomer (TPE) and preparation method thereof.
Background technology
Standard bicycle tire is easily broken, gas leakage and inflate it is cumbersome so that there is inconvenience using process.Closely
Thermoplastic polystyrene class elastomer (TPS) has been developed over year, solid tyre is prepared with thermoplastic styrene class elastomer,
The problems such as easily rupturable bicycle tyre, gas leakage and inflation trouble can be solved.But TPS be used for bicycle tyre there is also a lot
Problem, such as preponderance, compression set is high, the problems such as easily tear and wear no resistance.
The content of the invention
Based on this, it is necessary to which for thermoplastic polystyrene class elastomer preponderance, compression set is high, easily tear
There is provided a kind of composition for being used to prepare expansion type thermoplastic elastomer (TPE) and preparation method thereof, foaming with the problem of wearing no resistance
Type thermoplastic elastomer (TPE) and preparation method thereof.
A kind of composition for being used to prepare expansion type thermoplastic elastomer (TPE), according to the mass fraction, including：
In wherein one embodiment, the raw material of the crosslinked EVA are prepared according to the mass fraction, including：
100 parts of EVA；
Main 0.2 part~0.4 part of crosslinking agent；And
0.1 part~0.2 part of assistant crosslinking agent.
In wherein one embodiment, the main crosslinking agent is cumyl peroxide；
And/or, the assistant crosslinking agent is selected from trimethylol-propane trimethacrylate and Triallyl isocyanurate
At least one of.
In wherein one embodiment, the degree of cross linking of the crosslinked EVA is 0.5%~3%.
In wherein one embodiment, include 0.1 part~0.5 part of UV absorbents；The UV absorbents are selected from double
(2,2,6,6- tetramethyl -4- piperidyls) sebacate, 2- (2- hydroxy-5-methyl bases phenyl) BTAs and 2- (2- hydroxyls -
At least one of the 3- tert-butyl group -5- aminomethyl phenyls) -5- chlorinated benzotriazoles.
In wherein one embodiment, include 2 parts~6 parts of lubricant；The lubricant be selected from silicone master batch and
At least one of linear siloxane.
In wherein one embodiment, include 0.1 part~0.5 part of antioxidant；The antioxidant is selected from three (2,4-
Di-tert-butyl-phenyl) phosphite ester, β-positive octadecanol ester of (3,5- di-tert-butyl-hydroxy phenyls) propionic acid and four [β-(3,5-
At least one of di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
The above-mentioned preparation method for being used to prepare the composition of expansion type thermoplastic elastomer (TPE), comprises the following steps：
Other components in addition to TPU are well mixed and obtain pre-composition；
Pre-composition plasticizing, extrusion and granulation are obtained into pellet；
The pellet and the TPU are blended to the composition obtained for preparing expansion type thermoplastic elastomer (TPE).
A kind of expansion type thermoplastic elastomer (TPE), is passed through by the above-mentioned composition for being used to prepare expansion type thermoplastic elastomer (TPE)
Injection molding is obtained.
Above-mentioned expansion type process for preparation of thermoplastic elastomer, it is characterised in that to above-mentioned for preparing expansion type
The composition of thermoplastic elastomer (TPE) carries out injection molding.
It is above-mentioned to be used to prepare the composition of expansion type thermoplastic elastomer (TPE), due to TPUE have it is excellent
Wearability and incompressible permanent deformation；Crosslinked EVA has compression set low, and material light weight can be realized after foaming
The advantage of change, is carried out rational proportion, can prepare the expansion type thermoplastic elastomer (TPE) of excellent performance.Surveyed through experiment
Fixed, the expansion type thermoplastic elastomers that the above-mentioned composition for preparing expansion type thermoplastic elastomer (TPE) is prepared have relatively low
Compression set is low, wear-resisting, tear-resistant excellent performance the advantages of, also there is light weight；Simultaneously from elastic and extensive
The good crosslinked EVA of reactivation power causes the anti-wear performance of expansion type thermoplastic elastomer (TPE) also further to improve.It is above-mentioned to be used to prepare
The preparation method of the composition of expansion type thermoplastic elastomer (TPE) and above-mentioned expansion type process for preparation of thermoplastic elastomer are simple, easily
Industrialized in realizing.
Brief description of the drawings
Fig. 1 is the process chart of the expansion type process for preparation of thermoplastic elastomer of an embodiment；
Fig. 2 is the technique stream for being used to prepare the preparation method of the composition of expansion type thermoplastic elastomer (TPE) of an embodiment
Cheng Tu.
Embodiment
Below in conjunction with embodiment and accompanying drawing to for prepare expansion type thermoplastic elastomer (TPE) composition and its
Preparation method is described in further detail.
The composition for being used to prepare expansion type thermoplastic elastomer (TPE) of one embodiment, according to the mass fraction, including：
In wherein one embodiment, TPUE (TPU) is polyester-type TPU.Further, TPU
Melt index be 5g/10min~30g/10min.
In wherein one embodiment, TPU is selected from least one of A85C4957 and 75AE of AVALON companies.
TPU is low with very excellent wearability and long compressive permanent deformation, and its heat resistance can reach 120 DEG C and anti-oxidant energy
Power is superior, damping property, solvent resistance, tear resistance, bend disturb excellent strength, good processability.
Ethylene-vinyl acetate copolymer (EVA) has good foam performance, but general temperature tolerance is very poor, and is crosslinked
EVA temperature tolerance, elasticity and melt strength is improved, and the network structure being crosslinked enhances the mechanical property of abscess so that
Compression set reduction and damping effect are more notable.
In wherein one embodiment, the degree of cross linking of crosslinked EVA is 0.5%~3%.
In wherein one embodiment, crosslinked EVA is prepared by EVA.The raw material of crosslinked EVA are prepared by matter
Number meter is measured, including：100 parts of EVA, 0.2 part~0.4 part main crosslinking agent and 0.1 part~0.2 part assistant crosslinking agent.
In wherein one embodiment, EVA is cross-linking EVA.It is preferred that, EVA is selected from the UE630 of the poly- company of Taiwan
At least one of with the PA470 of Repsol companies of Spain.
In wherein one embodiment, EVA VA contents are 15wt%~40wt%.
In wherein one embodiment, EVA melt index is 1g/10min~20g/10min.
In wherein one embodiment, main crosslinking agent is cumyl peroxide.It is preferred that, main crosslinking agent is Acker agate
F-40P.
In wherein one embodiment, assistant crosslinking agent is selected from trimethylol-propane trimethacrylate and triallyl
At least one of isocyanuric acid ester.
The use of main crosslinking agent and assistant crosslinking agent can improve EVA heat resistance, elasticity and melt strength so that foaming
Structure is more stablized.
Mineral filler can improve tensile strength, compressive load, rigidity, shock resistance, resistance to compression as foaming nucleation agent
The performances such as intensity, most significant effect can provide preferable creep resistance, reduce compression set.An implementation wherein
In example, mineral filler is selected from least one of silica and carbon black.It is preferred that, the particle diameter of mineral filler is 0.1 μm~5 μ
m。
Foaming agent can reduce cost and realize the lightweight of composition, and can reduce compression set and subtract
Shake.In wherein one embodiment, foaming agent is closed-cell foam agent.Further, the particle diameter of foaming agent be 2 μm~50 μm it
Between.The starting blowing temperature of foaming agent is between 130~150 DEG C.In wherein one embodiment, foaming agent is selected from Aksu
At least one of foaming agent 950DU80 and 951DUX120.
UV absorbents are barrier or the process for suppressing photoredox or light aging, and UV absorbents are greatly improved product
Weather resistance.In one of the embodiments, UV absorbents can be UV absorbents commonly used in the art.Preferably, UV absorbs
Agent is selected from bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate, 2- (2- hydroxy-5-methyl bases phenyl) BTAs and 2-
At least one of (the 2- hydroxyl -3- tert-butyl group -5- aminomethyl phenyls) -5- chlorinated benzotriazoles.
Lubricant can reduce inside and outside frictionally damage, and be conducive to the dispersed of thermoplastic elastomer (TPE),
Improve mobility and release property, improve surface gloss.In one of the embodiments, lubricant is selected from silicone master batch and linear
At least one of siloxanes.It is preferred that, lubricant is the MB50-001 of Dow Corning Corporation and the H-Si of goldschmidt chemical corporation
At least one of 6441P.
Antioxidant can prevent polymeric material from aoxidizing qualitative change.In wherein one embodiment, antioxidant is selected from three (2,4-
Di-tert-butyl-phenyl) phosphite ester, β-positive octadecanol ester of (3,5- di-tert-butyl-hydroxy phenyls) propionic acid and four [β-(3,5-
At least one of di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.It is preferred that, antioxidant is 168 Hes of BASF
1010 press 1:1 ratio compounding.
It is above-mentioned to be used to prepare the composition of expansion type thermoplastic elastomer (TPE), due to TPUE have it is excellent
Wearability and incompressible permanent deformation；Crosslinked EVA has compression set low, and material light weight can be realized after foaming
The advantage of change, is carried out rational proportion, can prepare the expansion type thermoplastic elastomer (TPE) of excellent performance.Surveyed through experiment
Fixed, the expansion type thermoplastic elastomers that the above-mentioned composition for preparing expansion type thermoplastic elastomer (TPE) is prepared have relatively low
Compression set is low, wear-resisting, tear-resistant excellent performance the advantages of, also there is light weight；Simultaneously from elastic and extensive
The good crosslinked EVA of reactivation power causes the anti-wear performance of expansion type thermoplastic elastomer (TPE) also further to improve.
It should be noted that in other embodiments, UV absorbents, lubricant and antioxidant can be omitted.Crosslinking
EVA can also be obtained by outsourcing.
The expansion type thermoplastic elastomer (TPE) of one embodiment is by the above-mentioned combination for being used to prepare expansion type thermoplastic elastomer (TPE)
Thing is obtained by injection molding.
Above-mentioned expansion type thermoplastic elastomers have low, wear-resisting, tear-resistant excellent performance of relatively low compression set etc.
Advantage, also has the advantages that light weight and wearability are good.
Referring to Fig. 1, the expansion type process for preparation of thermoplastic elastomer of an embodiment, comprises the following steps：
S100, prepare composition for preparing expansion type thermoplastic elastomer (TPE).
Further referring to Fig. 2, in wherein one embodiment, the combination for preparing expansion type thermoplastic elastomer (TPE)
The preparation method of thing, comprises the following steps：
S110, prepare crosslinked EVA.
In wherein one embodiment, the step of preparing crosslinked EVA includes：
S111, according to the mass fraction, crosslinking is helped by 100 parts of EVA, 0.2 part~0.4 part main crosslinking agent and 0.1 part~0.2 part
Agent is well mixed to obtain the first mixture.
In wherein one embodiment, carried out during mixing in horizontal mixer.Stir speed (S.S.) is 20r/min~40r/
min。
In one of the embodiments, 5min~10min is stirred at room temperature.
S113, the first mixture dynamic crosslinking obtained into crosslinked EVA.
In wherein one embodiment, dynamic crosslinking is carried out in double screw extruder.It is further preferred that double spiral shells
The draw ratio of bar extruder is 36:1 or 48:1.The rotating speed of double screw extruder is 300r/min~360r/min.Twin-screw is squeezed
The temperature for going out machine is 150~160 DEG C.
In wherein one embodiment, the time of dynamic crosslinking is 0.5min~1.5min.
S120, obtain prepolymer by the other components in addition to TPU are well mixed.
In wherein one embodiment, by 6 parts~15 parts crosslinked EVAs, 1 part~5 parts mineral fillers, 0.5 part~3 parts hairs
Infusion, 0.1 part~0.5 part of UV absorbents, 2 parts~6 parts of lubricant and 0.1 part~0.5 part of antioxidant are well mixed
To pre-composition.
It should be noted that UV absorbents, lubricant and antioxidant can be omitted, now by crosslinked EVA, mineral filler
And foaming agent mixing.
In wherein one embodiment, mixing is carried out in horizontal mixer.In wherein one embodiment,
10min~15min is stirred at room temperature, and stir speed (S.S.) is 40r/min~60r/min.
S130, pre-composition plastified, is extruded and granulation obtains pellet.
By pre-composition plasticizing and extrusion carried out in double screw extruder in wherein one embodiment.Twin-screw
The temperature of extruder is 120 DEG C, and rotating speed is 200r/min.The draw ratio of double screw extruder is 24:1.
S140, pellet and TPU blendings obtained into composition for preparing expansion type thermoplastic elastomer (TPE).
In wherein one embodiment, blending is carried out in horizontal mixer.In wherein one embodiment,
10min is stirred at room temperature, and stir speed (S.S.) is 20r/min.
The preparation method technique of the above-mentioned composition for preparing expansion type thermoplastic elastomer (TPE) is simple and convenient to operate, easily
Industrialized in realizing.
S200, by it is above-mentioned be used for prepare expansion type thermoplastic elastomer (TPE) composition carry out injection molding.
In wherein one embodiment, injection molding is carried out in injection machine.Preferably, the temperature of injection molding is
180 DEG C~190 DEG C.During injection molding, composition foam to be formed with relatively low compression set it is low, wear-resisting,
Tear-resistant excellent performance and light weight, the expansion type thermoplastic elastomer (TPE) of excellent in abrasion resistance.
Above-mentioned expansion type process for preparation of thermoplastic elastomer technique is simple and convenient to operate, it is easy to accomplish industrialization.Prepare
Obtained expansion type thermoplastic elastomers have the advantages that relatively low compression set is low, wear-resisting, tear-resistant excellent performance, also
There is light weight；Cause the resistance to of expansion type thermoplastic elastomer (TPE) from elasticity and the good crosslinked EVA of recovery capability simultaneously
Mill performance is also further improved.
It should be noted that in other embodiments, step S110 can also be omitted.Crosslinked EVA directly uses outsourcing
Mode obtain.
Here is the explanation of specific embodiment, and following examples are not contained except inevitably miscellaneous unless otherwise specified, then
The component pointed out is not known in other beyond matter.
Embodiment 1
By 100 parts of EVA, 0.4 part of main crosslinking agent cumyl peroxide and 0.2 part of assistant crosslinking agent trimethylolpropane tris first
Base acrylate at room temperature, rotating speed be 40r/min under conditions of stirring 5min obtain the first mixture；First mixture is put
Extrusion, pelletizing carry out dynamic crosslinking and obtain crosslinked EVA in double screw extruder.The rotating speed of double screw extruder is 360r/
Min, draw ratio are 48:1st, temperature is 160 DEG C.The degree of cross linking of crosslinked EVA is 3%, and crosslinking time is 1.5min.
10 parts of above-mentioned crosslinked EVAs, 3 parts of silica and 3 parts of foaming agent 951DUX120 are taken to be well mixed and obtain pre-composition.
It is to carry out at room temperature to carry out mixing, and rotating speed is 40r/min, and incorporation time is 15min；Pre-composition is placed in into a rotating speed again is
200r/min, temperature are 120 DEG C, draw ratio is 24:Plastified in 1 double screw extruder, extrusion and granulation obtain pellet.
By above-mentioned pellet with 84 parts of TPU (75AE) at room temperature, rotating speed be that stirring 10min is under conditions of 20r/min
Obtain the composition for preparing expansion type thermoplastic elastomer (TPE).
The above-mentioned composition for preparing expansion type thermoplastic elastomer (TPE) is carried out into injection molding at 180 DEG C to be foamed
Type thermoplastic elastomer (TPE).
Embodiment 2
By 100 parts of EVA, 0.4 part of main crosslinking agent cumyl peroxide and 0.2 part of assistant crosslinking agent trimethylolpropane tris first
Base acrylate at room temperature, rotating speed be 40r/min under conditions of stirring 5min obtain the first mixture；First mixture is put
Extrusion, pelletizing carry out dynamic crosslinking and obtain crosslinked EVA in double screw extruder.The rotating speed of double screw extruder is 360r/
Min, draw ratio are 48:1st, temperature is 150 DEG C.The degree of cross linking of crosslinked EVA is 0.9%, and crosslinking time is 1min.
Take 14 parts of above-mentioned crosslinked EVAs, 2 parts of silica, 3 parts of foaming agent 951DUX120,0.5 part of UV absorbents it is double (2,
2,6,6- tetramethyl -4- piperidyls) sebacate, 6 parts of lubricant MB50-001 and 0.5 part of the antioxidant three (uncles of 2,4- bis-
Butyl phenyl) phosphite ester is well mixed obtains pre-composition.It is to carry out at room temperature to carry out mixing, and rotating speed is 40r/min, mixing
Time is 15min；Again by pre-composition be placed in a rotating speed be 200r/min, temperature be 120 DEG C, draw ratio be 24:1 twin-screw
Plastified in extruder, extrusion and granulation obtain pellet.
By above-mentioned pellet and 75 parts of TPU (A85C4957) at room temperature, rotating speed be 20r/min under conditions of stir
10min is to obtain the composition for preparing expansion type thermoplastic elastomer (TPE).
The above-mentioned composition for preparing expansion type thermoplastic elastomer (TPE) is carried out into injection molding at 190 DEG C to be foamed
Type thermoplastic elastomer (TPE).
Embodiment 3
By 100 parts of EVA, 0.2 part of main crosslinking agent cumyl peroxide and 0.1 part of assistant crosslinking agent triallyl isocyanuric acid
Ester at room temperature, rotating speed be 20r/min under conditions of stirring 10min obtain the first mixture；First mixture is placed in double spiral shells
Extrusion, pelletizing carry out dynamic crosslinking and obtain crosslinked EVA in bar extruder.The rotating speed of double screw extruder is 300r/min, major diameter
Than for 36:1st, temperature is 160 DEG C.The degree of cross linking of crosslinked EVA is 0.5%, and crosslinking time is 0.5min.
Take 15 parts of above-mentioned crosslinked EVAs, 2 parts of silica, 2 parts of foaming agent 951DUX120,0.2 part of UV absorbent 2- (2-
Hydroxy-5-methyl base phenyl) BTA, 4 parts of lubricant MB50-001 and 0.5 part of antioxidant β-(3,5- di-t-butyls-
4- hydroxy phenyls) the positive octadecanol ester of propionic acid is well mixed obtains pre-composition.It is to carry out at room temperature to carry out mixing, and rotating speed is
60r/min, incorporation time is 10min；Again by pre-composition be placed in a rotating speed be 200r/min, temperature be 120 DEG C, draw ratio be
24:Plastified in 1 double screw extruder, extrusion and granulation obtain pellet.
By above-mentioned pellet and 77 parts of TPU (A85C4957) at room temperature, rotating speed be 20r/min under conditions of stir
10min is to obtain the composition for preparing expansion type thermoplastic elastomer (TPE).
The above-mentioned composition for preparing expansion type thermoplastic elastomer (TPE) is carried out into injection molding at 180 DEG C to be foamed
Type thermoplastic elastomer (TPE).
Embodiment 4
By 100 parts of EVA, 0.4 part of main crosslinking agent cumyl peroxide and 0.2 part of assistant crosslinking agent trimethylolpropane tris first
Base acrylate at room temperature, rotating speed be 40r/min under conditions of stirring 5min obtain the first mixture；First mixture is put
Extrusion, pelletizing carry out dynamic crosslinking and obtain crosslinked EVA in double screw extruder.The rotating speed of double screw extruder is 360r/
Min, draw ratio are 48:1st, temperature is 150 DEG C.The degree of cross linking of crosslinked EVA is 2.2%, and crosslinking time is 1min.
Take 6 parts of above-mentioned crosslinked EVAs, 5 parts of carbon blacks, 2 parts of foaming agent 950DU80,0.1 part of UV absorbents 2- (2- hydroxyls -3-
The tert-butyl group -5- aminomethyl phenyls) -5- chlorinated benzotriazoles, 4 parts of lubricant H-Si 6441P and 0.5 part of antioxidant four [β -
(3,5- di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol ester is well mixed obtains pre-composition.It is at room temperature to carry out mixing
Carry out, rotating speed is 40r/min, and incorporation time is 15min；It is that 200r/min, temperature are 120 that pre-composition is placed in into a rotating speed again
DEG C, draw ratio be 24:Plastified in 1 double screw extruder, extrusion and granulation obtain pellet.
By above-mentioned pellet and 85 parts of TPU (A85C4957) at room temperature, rotating speed be 20r/min under conditions of stir
10min is to obtain the composition for preparing expansion type thermoplastic elastomer (TPE).
The above-mentioned composition for preparing expansion type thermoplastic elastomer (TPE) is carried out into injection molding at 190 DEG C to be foamed
Type thermoplastic elastomer (TPE).
Embodiment 5
By 100 parts of EVA, 0.4 part of main crosslinking agent cumyl peroxide and 0.2 part of assistant crosslinking agent trimethylolpropane tris first
Base acrylate at room temperature, rotating speed be 40r/min under conditions of stirring 5min obtain the first mixture；First mixture is put
Extrusion, pelletizing carry out dynamic crosslinking and obtain crosslinked EVA in double screw extruder.The rotating speed of double screw extruder is 360r/
Min, draw ratio are 48:1st, temperature is 150 DEG C.The degree of cross linking of crosslinked EVA is 2.2%, and crosslinking time is 1min.
Take 6.5 parts of above-mentioned crosslinked EVAs, 1 part of carbon black, 0.5 part of foaming agent 950DU80,0.1 part of UV absorbents 2- (2- hydroxyls
Base -3- the tert-butyl group -5- aminomethyl phenyls) -5- chlorinated benzotriazoles, 2 parts of lubricant H-Si 6441P and 0.1 part of antioxidant is mixed
Close and uniformly obtain pre-composition, antioxidant presses 1 for 168 and the 1010 of BASF:1 ratio compounding.It is at room temperature to carry out mixing
Carry out, rotating speed is 40r/min, and incorporation time is 15min；It is that 200r/min, temperature are 120 that pre-composition is placed in into a rotating speed again
DEG C, draw ratio be 24:Plastified in 1 double screw extruder, extrusion and granulation obtain pellet.
By above-mentioned pellet with 90 parts of TPU (75AE) at room temperature, rotating speed be that stirring 10min is under conditions of 20r/min
Obtain the composition for preparing expansion type thermoplastic elastomer (TPE).
The above-mentioned composition for preparing expansion type thermoplastic elastomer (TPE) is carried out into injection molding at 185 DEG C to be foamed
Type thermoplastic elastomer (TPE).
Expansion type thermoplastic elastomer (TPE) prepared by embodiment 1~5 and routine TPE solid tire materials are subjected to performance survey
Examination, as a result as shown in table 1.Wherein, shore hardness is obtained using ASTM D-2240 method measurement；Proportion uses ASTM D-
792 method measurement is obtained；Tensile strength and elongation at break are obtained using ASTM D-412 method measurement；Tearing strength is adopted
Obtained with ASTM D-624 method measurement；Compression set is obtained using ASTM D-695 method；DIN wearabilities are used
DIN 53516 method measurement is obtained.
Table 1
As can be seen from Table 1, the expansion type thermoplastic elastomer (TPE) prepared by embodiment 1~5 and conventional tubeless tire
Thermoplastic elastomers have similar mechanical property, and compression set, tearing strength and anti-wear performance are far better than normal
Advise the thermoplastic elastic material of solid tyre.
In addition, the foamed thermoplastic elastomers of the different hardness of above-mentioned design have extraordinary shock-absorbing function.Above-mentioned hair
Bubble thermoplastic elastomer (TPE) tests the environmental requirement for meeting EN71-3 through third-party testing mechanism.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of composition for being used to prepare expansion type thermoplastic elastomer (TPE), it is characterised in that according to the mass fraction, including：
2. the composition according to claim 1 for being used to prepare expansion type thermoplastic elastomer (TPE), it is characterised in that prepare institute
State the raw material of crosslinked EVA according to the mass fraction, including：
100 parts of EVA；
Main 0.2 part~0.4 part of crosslinking agent；And
0.1 part~0.2 part of assistant crosslinking agent.
3. the composition according to claim 2 for being used to prepare expansion type thermoplastic elastomer (TPE), it is characterised in that the master
Crosslinking agent is cumyl peroxide；
And/or, the assistant crosslinking agent is in trimethylol-propane trimethacrylate and Triallyl isocyanurate
It is at least one.
4. the composition according to claim 1 for being used to prepare expansion type thermoplastic elastomer (TPE), it is characterised in that the friendship
The degree of cross linking for joining EVA is 0.5%~3%.
5. the composition according to claim 1 for being used to prepare expansion type thermoplastic elastomer (TPE), it is characterised in that also include
0.1 part~0.5 part of UV absorbents；The UV absorbents are selected from bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate, 2-
(2- hydroxy-5-methyl bases phenyl) BTA and 2- (the 2- hydroxyl -3- tert-butyl group -5- aminomethyl phenyls) -5- chlorinated benzotriazoles
At least one of.
6. the composition according to claim 1 for being used to prepare expansion type thermoplastic elastomer (TPE), it is characterised in that also include
2 parts~6 parts of lubricant；The lubricant is selected from least one of silicone master batch and linear siloxane.
7. the composition according to claim 1 for being used to prepare expansion type thermoplastic elastomer (TPE), it is characterised in that also include
0.1 part~0.5 part of antioxidant；The antioxidant is selected from three (2,4- di-tert-butyl-phenyls) phosphite esters, β-(the tertiary fourths of 3,5- bis-
Base -4- hydroxy phenyls) the positive octadecanol ester of propionic acid and four [β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol esters
At least one of.
8. being used for as described in any one of claim 1~7 prepares the preparation method of the composition of expansion type thermoplastic elastomer (TPE),
It is characterised in that it includes following steps：
Other components in addition to TPU are well mixed and obtain pre-composition；
Pre-composition plasticizing, extrusion and granulation are obtained into pellet；
The pellet and the TPU are blended to the composition obtained for preparing expansion type thermoplastic elastomer (TPE).
9. a kind of expansion type thermoplastic elastomer (TPE), it is characterised in that hair is prepared as being used for described in any one of claim 1~7
The composition of alveolitoid thermoplastic elastomer (TPE) is obtained by injection molding.
10. expansion type process for preparation of thermoplastic elastomer as claimed in claim 9, it is characterised in that to claim 1~
The composition that being used for described in 7 any one prepares expansion type thermoplastic elastomer (TPE) carries out injection molding.
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