CN104130490B - A kind of TPV based on PLA and preparation method thereof - Google Patents
A kind of TPV based on PLA and preparation method thereof Download PDFInfo
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
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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
- C08L31/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid; Compositions of derivatives of such polymers
- C08L31/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C08L31/04—Homopolymers or copolymers of vinyl acetate
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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
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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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
- C08L2201/06—Biodegradable
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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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Abstract
The invention discloses a kind of TPV based on PLA and preparation method thereof, it is made up of following raw material according to respective weight：50~90 parts of ethylene-vinylacetate rubber, 10~50 parts of PLA, 0.1~3 part of peroxide, 0.1~5 part of free radical stabilizer, 0.05~1 part of antioxidant, 0.1~3 part of age resistor, 1~20 part of plasticizer.The TPV that the preparation method provided according to the present invention is obtained has the features such as biomass content is high, intensity is high, elongation is big, resilience is good, part biological is degradable, thermoplastic property is excellent, and its preparation method is simple, easily realize industrialization.
Description
Technical field
The present invention relates to technical field of polymer materials, more particularly to a kind of TPV based on PLA
And preparation method thereof.
Background technology
With the development of automobile industry, traditional rubber, the production of plastics and usage amount are growing day by day.At the same time, it is a kind of
Novel high polymer material, TPV (TPV) is quickly sent out because of the advantage that it has conventional plastic and rubber concurrently
Exhibition.TPV shows the property of rubber at room temperature, at high temperature can as plastics melt-processed, can with fast, economical and
Easily machine-shaping, and can be recycled after, have become a kind of very important novel high polymer material.
TPV (TPV) is mainly made up of two parts, and one is plastics, as continuous phase, and two be the rubber of crosslinking
Glue is used as dispersed phase.The rubber that current TPV is selected mainly has natural rubber, butadiene-styrene rubber, butadiene rubber, nitrile rubber, propylene
Acid esters rubber, ethylene/vinyl acetate rubber, ethylene propylene diene rubber, neoprene or their blend, the plastics of selection are main
Including polypropylene, polyethylene, polyamide, SAN, polystyrene, makrolon or their mixture.
Publication No. CN 1944497A patent discloses a kind of above-mentioned rubber and plastics of being based on using double peroxide vulcanizing system system
The method of standby TPV.Current most typical TPV is the PDM of ethylene propylene diene rubber 5) pass through dynamic with polypropylene (PP)
State vulcanizes and is made, and is that the EPDM particulates of a large amount of solid cures are dispersed in the macromolecular elastomer material formed in continuous PP phases
Material.Usual EPDM contents in TPV are 60-70wt%.Dynamic vulcanization makes the EPDM particle diameters disperseed in PP plastic substrates micro- less than 2
Rice, and the characteristic of rubber and plastics is combined together well, obtain the elastomeric material of excellent combination property.But it is traditional
EPDM/PP thermoplastic elastomer (TPE) tensile strengths are not high, the stretching of such as EPDM/PP (60/40, wt/wt) TPV
Intensity is even below 10MPa.
Largely using and discard for traditional TPV not only causes the increasingly in short supply of petroleum resources, but also ecological environment is made
Into heavy damage.PLA (PLA) is a kind of new biodegradable plastic, can be made up of non-grain starch of raw material.Form sediment
Powder obtains glucose through saccharification, then lactic acid is made by glucose and certain strain fermentation, then synthesizes certain molecular weight by lactic acid
PLA.PLA has good biodegradability, can be degradable by microorganism in nature after use, ultimately generates
Carbon dioxide and water, will not cause any pollution to environment, be a kind of novel environment friendly plastics.But the thermoplasticity sulphur based on PLA
Change rubber to be but rarely reported.Recently, Publication No. CN102827465A patent discloses a kind of comprising 50~80 parts of polyester-types
The degradable thermoplastic vulcanization rubber of biological based elastomeric and 50~20 parts of PLAs.The elastomer used in the patent is not yet
The polyester type elastomer body of large-scale production.Good degradability is the advantage of polyester type elastomer body, but degraded uses process to TPV
The influence of middle polyester type elastomer body rubber characteristic is still not clear.
There is excellent compatibility to be one of excellent essential condition of TPV of processability for rubber and plastics.
Vinyl acetate polymer (PVAc) and PLA are fully compatible, therefore ethylene-vinyl acetate rubber has good phase with PLA
Capacitive, and compatibility can obtain by adjusting the content of vinyl acetate in rubber.Ethylene-vinyl acetate rubber has
Good high temperature resistant, oil resistant, ageing-resistant performance, and peroxide cure can be used.Therefore ethane-acetic acid ethyenyl ester is passed through
Rubber and PLA dynamic crosslinking in the presence of a peroxide, new bio base and the part that can develop a kind of excellent performance are raw
Biodegradable TPV.
The content of the invention
In view of this, it is an object of the invention to propose a kind of preparation side of the TPV based on PLA
Method, to obtain, biomass content is high, intensity is high, elongation is big, stretching permanent deformation is small, part biological is degradable, thermoplastic property
It is excellent, temperature in use TPV in extensive range.
Based on above-mentioned purpose, a kind of TPV based on PLA that the present invention is provided by following raw material according to
Respective weight composition：50~90 parts of ethylene-vinyl acetate rubber, 10~50 parts of PLA, peroxide 0.1~3
Part, 0.1~5 part of free radical stabilizer, 0.05~1 part of antioxidant, 0.1~3 part of age resistor, 1~20 part of plasticizer.
It is preferred that the weight percentage of vinyl acetate is 45%-75% in the ethylene-vinyl acetate rubber.
It is preferred that half-life period of the peroxide at 100 DEG C is not less than 1 hour, it is no more than in 170 DEG C of half-lifes
10 minutes, it is ensured that peroxide is basic regardless of solution when being blended under low temperature, decomposes complete during dynamic vulcanization at high temperature.
Alternatively, the free radical stabilizer is 2,2,6,6- tetramethyl piperidines-nitrogen-oxide, free radical stabilizer
In the presence of free radical can be caught in peroxide fast decoupled, it is to avoid local excessive is crosslinked and triggered under TPV mechanical performances
Drop, and the free radical being captured at the same temperature can be slowly released again, so as to reach vulcanization effect more preferably, evenly
Really.
Alternatively, the antioxidant is at least one of irgasfos 168 and antioxidant 1010, can prevent or reduce
The thermal oxidative degradation of ethylene-vinyl acetate rubber and PLA during dynamic vulcanization.
Alternatively, the age resistor is 2,2,4- trimethyl -1,2- EEDQ polymer, N- cyclohexyl-N '-phenyl pair
At least one of phenylenediamine and N- (1,3- dimethyl) butyl-N '-diphenyl-para-phenylene diamine.
Alternatively, the plasticizer be ester plasticizer, including dioctyl adipate, citrate, dibutyl sebacate,
At least one of di-n-octyl sebacate and trioctyl trimellitate (TOTM).Ester plasticizer and PLA and ethane-acetic acid ethyenyl ester
Rubber has good compatibility, therefore, it is possible to improve the elasticity of prepared thermoplastic sulfurized rubber to a greater extent, adjust it
Hardness, while its cost can also be reduced.
Present invention also offers a kind of preparation method of the TPV based on PLA, including following step
Suddenly：
First by ethylene-vinyl acetate rubber, peroxide, free radical stabilizer and age resistor according to weight
Elastomeric compound is obtained by the way that two-roll mill or banbury or screw extruder are well mixed at 40 DEG C~100 DEG C, is kneaded
Technique is identical with traditional rubber mixing-milling technique；Then above-mentioned elastomeric compound, PLA, antioxidant and plasticizer are matched somebody with somebody according to parts by weight
It is a kind of with poly- than, by banbury or screw extruder melt blending 5~25 minutes, being finally given at 165 DEG C~200 DEG C
The TPV that lactic acid is matrix, cross-linked ethylene-vinylacetate rubber is dispersed phase.
Alternatively, 30~200 revs/min of the closed-smelting machine rotor rotating speed, preferably 50~100 revs/min.
Alternatively, 80-300 revs/min of the screw extruder rotating speed, preferably 100~200 revs/min.
From the above it can be seen that a kind of preparation side for TPV based on PLA that the present invention is provided
Method can realize that cost is low, environment-friendly, easily realize industrialized production on conventional polymer material processing plant.According to
The TPV that the preparation method that the present invention is provided is obtained has that biomass content is high, resilience is good, part biological
The features such as degradable, intensity is high, thermoplastic property is excellent, can be directly used for extrusion molding, compression molding to prepare various thermoplasticity
Elastomeric article.In addition, micro additive, does not interfere with the bio-based thermoplastic vulcanizates such as colouring agent, processing aid
The basic performance of rubber.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, to this hair
It is bright to be further described.
Embodiment 1
By the ethylene-vinyl acetate rubber 300g that vinyl acetate content is 50%, cumyl peroxide 3g, 2,2,
6,6- tetramethyl piperidines-nitrogen-oxide 2.5g, 2,2,4- trimethyl -1,2- EEDQ polymer 2.5g are mixed with banbury
Obtain elastomeric compound (blending condition within 10 minutes：Temperature is 80 DEG C, and rotor speed is 50 revs/min), then by elastomeric compound and PLA
200g, dibutyl sebacate 15g, 1010 antioxidant 2.5g and 168 antioxidant the 0.5g melt blending in banbury are obtained for 10 minutes
To TPV (blending condition：Temperature is 170 DEG C, and rotor speed is 50 revs/min).TPV is passed through
Vulcanizing press is hot-forming, obtains flaked thermoplastic's vulcanization rubber of 1 millimeters thick, and is cut into standard batten according to relevant criterion
For Mechanics Performance Testing, every test result is included in table 1.
Embodiment 2
Ethylene-vinyl acetate rubber the 350g, (uncle of 2,5- dimethyl -2,5- bis- by vinyl acetate content for 70%
Butyl peroxy) hexane 7g, 2,2,6,6- tetramethyl piperidines-nitrogen-oxide 1.5g, 2,2,4- trimethyl -1,2- EEDQs
Polymer 2.5g two-roll mills knead 10 minutes at 40-60 DEG C and obtain elastomeric compound, then by elastomeric compound and PLA
150g, dioctyl adipate 15g and 1010 antioxidant the 1.5g melt blending in banbury obtain thermoplastic vulcanizates rubber in 12 minutes
Glue (blending condition：Temperature is 180 DEG C, and rotor speed is 100 revs/min).TPV is passed through into vulcanizing press heat
It is molded, flaked thermoplastic's vulcanization rubber of 1 millimeters thick is obtained, and standard batten is cut into for mechanical property according to relevant criterion
Test, every test result is included in table 1.
Embodiment 3
Ethylene-vinyl acetate rubber the 300g, (uncle of 2,5- dimethyl -2,5- bis- by vinyl acetate content for 50%
Butyl peroxy) hexane 6g, 2,2,6,6- tetramethyl piperidines-nitrogen-oxide 1g, 2,2,4- trimethyl -1,2- EEDQs gather
The mixing of compound 1g banburies obtains elastomeric compound (blending condition in 10 minutes：Temperature is 80 DEG C, and rotor speed is 50 revs/min), so
Elastomeric compound and PLA 200g, ATBC 10g, 1010 antioxidant 1g and 168 antioxidant 1g are melted in banbury afterwards
Melt blending and obtain TPV (blending condition in 10 minutes：Temperature is 180 DEG C, and rotor speed is 50 revs/min).By thermoplastic
Property vulcanization rubber it is hot-forming by vulcanizing press, obtain 1 millimeters thick flaked thermoplastic vulcanization rubber, and according to correlation mark
Standard, which is cut into standard batten, is used for Mechanics Performance Testing, and every test result is included in table 1.
Embodiment 4
By the ethylene-vinyl acetate rubber 300g that vinyl acetate content is 60%, cumyl peroxide 2.5g, 2,
2,6,6- tetramethyl piperidines-nitrogen-oxide 5g, N- (1,3- dimethyl) butyl-N '-diphenyl-para-phenylene diamine 6g is mixed with banbury
Obtain elastomeric compound (blending condition within 10 minutes：Temperature is 70 DEG C, and rotor speed is 60 revs/min), then by elastomeric compound and PLA
200g, di-n-octyl sebacate 25g and 1010 antioxidant the 1g melt blending in banbury obtain TPV in 12 minutes
(condition：Temperature is 170 DEG C, and rotor speed is 80 revs/min).TPV is hot-forming by vulcanizing press,
Obtain 1 millimeters thick flaked thermoplastic vulcanization rubber, and according to relevant criterion be cut into standard batten be used for Mechanics Performance Testing, respectively
Item test result is included in table 1.
Embodiment 5
By the ethylene-vinyl acetate rubber 350g that vinyl acetate content is 60%, cumyl peroxide 4g, 2,2,
6,6- tetramethyl piperidines-nitrogen-oxide 4g, 2,2,4- trimethyl -1,2- EEDQ polymer 2.0g two-roll mills exist
Mixing obtains elastomeric compound in 10 minutes at 40-60 DEG C, then by elastomeric compound and PLA 150g, di-n-octyl sebacate 10g and 1010
Antioxidant 4g melt blendings in banbury obtain TPV (blending condition in 12 minutes：Temperature is 170 DEG C, rotor
Rotating speed is 60 revs/min).TPV is hot-forming by vulcanizing press, obtain the flaked thermoplastic of 1 millimeters thick
Vulcanizing rubber, and be cut into standard batten according to relevant criterion is used for Mechanics Performance Testing, and every test result is included in table 1.
Embodiment 6
Ethylene-vinyl acetate rubber the 600g, (uncle of 2,5- dimethyl -2,5- bis- by vinyl acetate content for 50%
Butyl peroxy) hexane 12g, 2,2,6,6- tetramethyl piperidines-nitrogen-oxide 5g, N- (1,3- dimethyl) butyl-N '-phenyl
The mixing of p-phenylenediamine 5g banburies obtains elastomeric compound (blending condition in 8 minutes：Temperature be 80 DEG C, rotor speed be 100 turns/
Point), then elastomeric compound is passed through with PLA 400g, ATBC 100g, 1010 antioxidant 2g and 168 antioxidant 2g double
Screw extruder melting extrusion, obtains the temperature point of a kind of TPV, wherein extruder section from feeding section to mouth mold
Wei not be 30 DEG C, 165 DEG C, 170 DEG C, 175 DEG C and 180 DEG C, screw speed is 150rpm.TPV is passed through into flat board sulphur
Change machine is hot-forming, obtains flaked thermoplastic's vulcanization rubber of 1 millimeters thick, and is cut into standard batten for power according to relevant criterion
Performance test is learned, every test result is included in table 1.
Comparative example 1
By ethylene-propylene rubber (EPDM) 300g, cumyl peroxide 3g, 2,2,6,6- tetramethyl piperidines-nitrogen-oxidation
Thing 2.5g, 2,2,4- trimethyl -1,2- EEDQ polymer 2.5g banburies mixing obtain elastomeric compound (blending bar for 10 minutes
Part：Temperature is 80 DEG C, and rotor speed is 50 revs/min), then by elastomeric compound and PLA 200g, dibutyl sebacate 15g,
1010 antioxidant 2.5g and 168 antioxidant the 0.5g melt blending in banbury obtain TPV (blending for 10 minutes
Condition：Temperature is 170 DEG C, and rotor speed is 50 revs/min).TPV is hot-forming by vulcanizing press, obtain
Flaked thermoplastic to 1 millimeters thick vulcanizes rubber, and is cut into standard batten for Mechanics Performance Testing according to relevant criterion, every
Test result is included in table 1.
Comparative example 2
The ethylene-vinyl acetate rubber 300g, PLA 200g, 2,5- diformazans for being 50% by vinyl acetate content
(t-butylperoxy) hexane of base -2,5- bis- 6g, 2,2,6,6- tetramethyl piperidines-nitrogen-oxide 1g, 2,2,4- trimethyl -1,
2- EEDQ polymer 1g, ATBC 10g, 1010 antioxidant 1g and 168 antioxidant 1g are disposable in banbury
Melt blending obtains TPV (blending condition in 10 minutes：Temperature is 180 DEG C, and rotor speed is 50 revs/min).By heat
Plasticity vulcanization rubber is hot-forming by vulcanizing press, obtains flaked thermoplastic's vulcanization rubber of 1 millimeters thick, and according to correlation
Standard, which is cut into standard batten, is used for Mechanics Performance Testing, and every test result is included in table 1.
Comparative example 3
By vinyl acetate content for 50% ethylene-vinyl acetate rubber 300g and PLA 200g in banbury
Melt blending obtains blend (blending condition in 10 minutes：Temperature is 180 DEG C, and rotor speed is 50 revs/min).Blend is passed through
Vulcanizing press is hot-forming, obtains flaked thermoplastic's vulcanization rubber of 1 millimeters thick, and is cut into standard batten according to relevant criterion
For Mechanics Performance Testing, every test result is included in table 1.
It should be noted that PLA used in various embodiments above and comparative example, ethylene-vinyl acetate rubber and
EPDM is dried in vacuo 12 hours before at 50 DEG C.PLA used is U.S.'s Natureworks LLC Products
PLA2003D, ethylene-vinyl acetate rubber used is German Lanxess Corporation product, and EPDM used is that Dow Chemical is public
Take charge of product.Other chemical assistants are commercially available prod, and purity is more than 97%.
The step of prepared thermoplastic elastic material based on PLA suppresses sheet material includes：First will be prepared
Thermoplastic elastic material based on PLA is put into mould hot pressing (180 DEG C of hot pressing temperature, hot pressing time on vulcanizing press
4min, hot pressing pressure 15MPa) (cold pressing time 5min, cold pressing pressure 15MPa) is cold-pressed again, the sheet material that thickness is 1mm is made, uses
In tensile property and hardness test.
Wherein using electronic tensile test machine (Instron5967) at room temperature by standard GB/T/T528-2009 tests
The tensile property of sample, draw speed is 200mm/min；Using shore D type hardness testers meter according to standard GB/T/T531.1-
The hardness of 2008 test samples.Complex viscosity using flat board torque rheometer (TA Instruments, DHR-2) at 200 DEG C and
Frequency of oscillation be 100Hz under the conditions of measure.
The embodiment of table 1 and the performance parameter of the thermoplastic elastic material based on PLA in comparative example
The TPV based on PLA obtained by the present invention vulcanizes rubber phase with current conventional thermoplastic
Than having the advantages that biomass content is high, part biological is degradable, intensity is high, resilience is good, it disclosure satisfy that in vibration-absorptive material, car
Application in terms of internal and external ornament product, medical equipment, sport footwear.With using traditional EPDM rubber and poly- breast in comparative example 1
TPV prepared by sour dynamic vulcanization is compared, the thermoplastic vulcanizates rubber based on PLA obtained in embodiment 1~6
Glue tensile strength improves about 1~2 times, and 100% stretching strength improves 2~4 times, while elongation at break is higher, at 200 DEG C
Complex viscosity is lower.With the thermoplastic vulcanizates rubber based on PLA prepared in comparative example 2 using a step melt-blending process
Glue is compared, the TPV tensile strength based on PLA that is obtained in embodiment 1~6,100% stretching strength and
Elongation at break etc., which has, to be significantly improved, while complex viscosity is reduced at 200 DEG C.With than in embodiment 3 do not use dynamic vulcanization
Ethylene-vinyl acetate rubber/polylactic acid blend of preparation is compared, the thermoplasticity based on PLA obtained in embodiment 1~6
Vulcanize rubber tensile intensity and improve 1~3 times, 100% stretching strength improves 4~9 times, while hardness is significantly improved.Therefore, originally
The content of the invention is a breakthrough for vulcanizing rubber to conventional thermoplastic on composition of raw materials and performance.The present invention provide based on poly-
The complex viscosity of the thermoplastic elastic material of lactic acid at high frequencies is relatively low, can be directly used for extrusion molding or is hot pressed into
Type, to prepare various thermoplastic elastomer articles.In addition, micro or a small amount of additive, such as processing aid, colouring agent, water resistant
Solve agent etc. will not bio-based thermoplastic elastic material described in shadow basic performance.
Those of ordinary skills in the art should understand that：The specific embodiment of the present invention is the foregoing is only, and
The limitation present invention is not used in, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc.,
It should be included within protection scope of the present invention.
Claims (6)
1. a kind of TPV based on PLA, it is characterised in that by following raw material according to respective weight
Composition：50~90 parts of ethylene-vinyl acetate rubber, 10~50 parts of PLA, 0.1~3 part of peroxide, free radical stabilizer
0.1~5 part, 0.05~1 part of antioxidant, 0.1~3 part of age resistor, 1~20 part of plasticizer；
The weight percentage of vinyl acetate is 45%~75% in the ethylene-vinyl acetate rubber；
The preparation method of the TPV based on PLA, comprises the following steps：
First by ethylene-vinyl acetate rubber, peroxide, free radical stabilizer and age resistor according to weight 40
DEG C~100 DEG C at obtain elastomeric compound by the way that two-roll mill or banbury or screw extruder are well mixed, then will be upper
State elastomeric compound, PLA, antioxidant and plasticizer according to weight at 165 DEG C~200 DEG C by banbury or spiral shell
Bar extruder melt blending 5~20 minutes, obtains a kind of TPV based on PLA；
The free radical stabilizer is 2,2,6,6- tetramethyl piperidines-nitrogen-oxide.
2. a kind of TPV based on PLA according to claim 1, it is characterised in that the peroxidating
Half-life period of the thing at 100 DEG C is not less than 1 hour, is no more than 10 minutes in 170 DEG C of half-lifes.
3. a kind of TPV based on PLA according to claim 1, it is characterised in that the antioxidant
For at least one of irgasfos 168 and antioxidant 1010.
4. a kind of TPV based on PLA according to claim 1, it is characterised in that the age resistor
For 2,2,4- trimethyl -1,2- EEDQ polymer, CPPD N cyclohexyl N' phenyl p phenylene diamine and N- (1,3- dimethyl) fourth
At least one of base-N '-diphenyl-para-phenylene diamine.
5. a kind of TPV based on PLA according to claim 1, it is characterised in that the plasticizer
For at least one in dioctyl adipate, citrate, dibutyl sebacate, di-n-octyl sebacate and trioctyl trimellitate (TOTM)
Kind.
6. a kind of a kind of TPV based on PLA prepared according to any one of Claims 1 to 5
Preparation method, it is characterised in that the described method comprises the following steps：
First by ethylene-vinyl acetate rubber, peroxide, free radical stabilizer and age resistor according to weight 40
DEG C~100 DEG C at obtain elastomeric compound by the way that two-roll mill or banbury or screw extruder are well mixed, then will be upper
State elastomeric compound, PLA, antioxidant and plasticizer according to weight at 165 DEG C~200 DEG C by banbury or spiral shell
Bar extruder melt blending 5~20 minutes, obtains a kind of TPV based on PLA.
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| CN105585829A (en) * | 2016-02-18 | 2016-05-18 | 合肥市再德高分子材料有限公司 | Environment-friendly flame-retardant polylactic acid composite material |
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| CN112745587B (en) * | 2019-10-31 | 2022-09-20 | 中国石油化工股份有限公司 | Flame-retardant ethylene propylene diene monomer/polylactic acid thermoplastic elastomer composition, elastomer, and preparation method and application thereof |
| CN112745588A (en) * | 2019-10-31 | 2021-05-04 | 中国石油化工股份有限公司 | Composition for preparing ethylene propylene diene monomer/polylactic acid thermoplastic vulcanized rubber, and preparation method and application thereof |
| CN112759815A (en) * | 2019-11-06 | 2021-05-07 | 中国石油化工股份有限公司 | Composition for preparing ethylene octene copolymer/polylactic acid thermoplastic vulcanized rubber, and preparation method and application thereof |
| CN114874506B (en) * | 2021-02-05 | 2024-06-04 | 中国石油化工股份有限公司 | Composition for preparing thermoplastic vulcanized rubber microporous foam material, preparation method and application thereof |
| CN115403839B (en) * | 2021-05-26 | 2024-06-04 | 中国石油化工股份有限公司 | Thermoplastic elastomer microporous foaming composition, microporous foaming material, preparation method and application thereof |
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| CN102382370B (en) * | 2011-10-18 | 2015-01-21 | 深圳市科聚新材料有限公司 | Polypropylene engineering plastic as well as preparation method and application thereof |
| CN103571165B (en) * | 2013-11-06 | 2016-06-08 | 江南大学 | Lactic acid composite material and preparation method thereof |
| CN103897260A (en) * | 2014-04-24 | 2014-07-02 | 山东昊达化学有限公司 | Blended composition of ethylene-ethylene vinyl-acetate copolymer (EVA) and polylactic acid (PLA) and molding product thereof |
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