CN110128638A - A kind of thermoplastic polyester elastomer and foaming body - Google Patents
A kind of thermoplastic polyester elastomer and foaming body Download PDFInfo
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- CN110128638A CN110128638A CN201910313106.XA CN201910313106A CN110128638A CN 110128638 A CN110128638 A CN 110128638A CN 201910313106 A CN201910313106 A CN 201910313106A CN 110128638 A CN110128638 A CN 110128638A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/672—Dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/06—CO2, N2 or noble gases
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/08—Supercritical fluid
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyesters Or Polycarbonates (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Macropore, aperture or aperture unevenness are generated to overcome the problems, such as that existing thermoplastic polyester elastomer foaming exists, the present invention provides a kind of thermoplastic polyester elastomers, including following segment: segment one: polyester hard section；Segment two: polyester soft segment and/or polyester soft segment；Segment three: general structure is as follows:Wherein, R4Selected from aromatic group；R5One of branched alkyl selected from H, the straight chained alkyl of 1~6 carbon and 1~6 carbon is a variety of, and the value that the value of m is 5~30, n is 2~10.Meanwhile the invention also discloses the foaming bodies including above-mentioned thermoplastic polyester elastomer.For thermoplastic polyester elastomer provided by the invention especially suitable for foaming technique field, obtained expanded particle hole size is uniform, no aperture and poly- and hole.
Description
Technical field
The invention belongs to thermoplastic elastomer foaming technical fields, and in particular to a kind of thermoplastic polyester elastomer and foaming
Body.
Background technique
Thermoplastic polyester elastomer (TPEE) is a kind of line style containing polyester hard section and aliphatic polyester or polyester soft segment
Block copolymer has both the workability of rubber excellent elasticity and thermoplastic, and hardness is adjustable.TPEE hard section it is rigid
Property, polarity and crystallinity make it have intensity outstanding and preferable heat-resisting quantity, creep resistant, solvent resistance and impact resilience,
The low Tg and saturability of soft segment polyethers make it have excellent lower temperature resistance and ageing resistance.It is mainly used for requiring to subtract
Shake, impact resistance, warping strength, leakproofness and elasticity, oil resistant, chemicals-resistant and the field for requiring sufficient intensity.Such as: automobile component,
Rail traffic damping, telephone cord, hydraulic hose, footwear material, sports equipment etc..
Foamed material obtains increasing application in terms of footwear material, sports equipment in recent years.TPEE is due to melt strength
Not high, when foaming, is easy to produce macropore, aperture or aperture uneven phenomenon, limits the application of TPEE in this respect.
Existing one kind settling mode, such as patent CN201610715351.X, patent CN201710729077.6, patent
Documented by JP1994228419A and patent CN101608056B, be in such a way that other types of resin is blended in TPEE,
The melt strength etc. of TPEE is adjusted, due to the consistency problem between different resins, the resin of optional blending is very limited, and
It equally exists and non-uniform risk is blended, it is difficult to reach the other homogeneity of molecular level, it is unfavorable to bring to the cell uniformity of foaming
It influences.
Summary of the invention
There is a problem of generating macropore, aperture or aperture unevenness, the present invention for the foaming of existing thermoplastic polyester elastomer
Provide a kind of thermoplastic polyester elastomer, foaming precursor and foaming body.
It is as follows that the present invention solves technical solution used by above-mentioned technical problem:
On the one hand, the present invention provides a kind of thermoplastic polyester elastomers, including following segment:
Segment one: polyester hard section；
Segment two: polyester soft segment and/or polyester soft segment；
Segment three: general structure is as follows:
Wherein, R4Selected from aromatic group；R5In branched alkyl selected from H, the straight chained alkyl of 1~6 carbon and 1~6 carbon
It is one or more, the value that the value of m is 5~30, n is 2~10.
Optionally, segment one: segment two: the mass ratio of segment three is 30~70:30~70:5~15.
Optionally, the general structure of the segment one is as follows:
Wherein, R1Selected from one of aromatic group and tetrahydrofuran group or a variety of, R2Straight chain selected from 3~6 carbon
One of alkyl, branched alkyl and alicyclic alkyl chain are a variety of.
Optionally, the R1One kind or more selected from ortho position phenyl ring, meta position phenyl ring, contraposition phenyl ring, naphthalene nucleus and tetrahydrofuran
Kind.
Optionally, the general structure of the segment two is as follows:
Wherein, R3Selected from one of polyester group and polyether group or a variety of.
Optionally, the R3Selected from one of polyglycol ether, polypropylene glycol ether, polybutadiene alcohol ether and aliphatic polyester
Or it is a variety of.
It optionally, further include having catalyst, catalyst oxygen one or more in metallic tin, bismuth, titanium and magnesium
Compound, hydroxide, salt or ester-formin.
Optionally, further include having antioxidant, the antioxidant be selected from hindered phenol, phosphorous acid and its lipid one kind or
It is a variety of.
On the other hand, the present invention provides a kind of thermoplastic polyester elastomer foaming bodies, by thermoplastic poly as described above
Ester elastomer foams to obtain.
Optionally, the foaming method of the thermoplastic polyester elastomer foaming body is supercritical foaming, and foaming agent is selected from two
One of carbonoxide and nitrogen are a variety of.
The thermoplastic polyester elastomer provided according to the present invention includes traditional polyester hard section and polyester soft segment/polyester
Soft segment, while by Molecular Design, it is also added into the segment three as shown in structural formula three, segment three shown in structural formula three
The structure of branching can be provided in thermoplastic polyester elastomer, and its branched structure introduced is spatially in distributed, energy
The melt strength of thermoplastic polyester elastomer is enough effectively improved, while avoiding gel effect caused by high functional group, the present invention
The thermoplastic polyester elastomer of offer can keep material melt temp lower under identical tensile strength, realize high stretch
The balance of intensity and low melting point is processed conducive to the foaming of thermoplastic polyester elastomer.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used to explain
The present invention is not intended to limit the present invention.
The embodiment of the invention provides a kind of thermoplastic polyester elastomers, including following segment:
Segment one: polyester hard section；
Segment two: polyester soft segment and/or polyester soft segment；
Segment three: general structure is as follows:
Wherein, R4Selected from aromatic group；R5In branched alkyl selected from H, the straight chained alkyl of 1~6 carbon and 1~6 carbon
It is one or more, the value that the value of m is 5~30, n is 2~10.
Thermoplastic polyester elastomer provided by the invention includes traditional polyester hard section and polyester soft segment/polyester soft segment,
Simultaneously by Molecular Design, it is also added into the segment three as shown in structural formula three, segment three shown in structural formula three can
The structure of branching is provided in thermoplastic polyester elastomer, and its branched structure introduced is spatially in distributed, Neng Gouyou
Effect improves the melt strength of thermoplastic polyester elastomer, while avoiding gel effect caused by high functional group, and the present invention provides
Thermoplastic polyester elastomer can under identical tensile strength, keep material melt temp it is lower, realize high tensile
With the balance of low melting point, processed conducive to the foaming of thermoplastic polyester elastomer.
Segment one, segment two are connected with segment three by ester bond, are distributed between segment in random block.Wherein, segment three by
In itself molecular weight distribution have certain width, and due to the limitation functional group of steric hindrance cannot 100% participate in reaction, institute
It for the functional group number of connection and is not fixed with it, is an average value.Generally preferably be averaged 2-10 degree of functionality, actual participation reaction
Degree of functionality be less than this quantity.
Wherein, segment three is from the prepolymer monomer being added in thermoplastic polyester elastomer polymerization process, the pre-polymerization
Object monomer is polymerize to obtain by aromatic monomer vinyl-bearing and acrylic ester monomer.
In some embodiments, segment one: segment two: the mass ratio of segment three is 30~70:30~70:5~15.
Above-mentioned mass ratio is optimum ratio of the invention, wherein the content of segment one influences thermoplastic polyester elastomer
Mechanical strength and stability, as the content of segment one is promoted, the mechanical strength of thermoplastic polyester elastomer also gradually mentioned
It is high；The content of segment two influences the flexibility and elasticity of thermoplastic polyester elastomer, as the content of segment two is promoted, thermoplasticity
The flexibility and elasticity of polyester elastomer are improved；Segment three rises to adjust to the melt strength of thermoplastic polyester elastomer to be made
With；Inventor is had found by many experiments, when the mass ratio of segment one, segment two and segment three belongs to above-mentioned preferred scope
When, obtained thermoplastic polyester elastomer is particularly suitable for application as the foamed materials such as footwear material, and obtained foamed material abscess is smaller,
And uniform in foaming.
It should be noted that those skilled in the art according to other field to the performance requirement of thermoplastic polyester elastomer,
The mass ratio of segment one, segment two and segment three can also be adjusted, should all include within the scope of the present invention.
The aromatic group or tetrahydro furan that the segment one of the thermoplastic polyester elastomer is added in polymerization process
It mutters the dicarboxylic acids of group or the polyalcohol of dimethyl ester and 3~6 carbon, is total to by what esterification or ester exchange reaction polymerize
Polyester segment.
In some embodiments, the general structure of the segment one is as follows:
Wherein, R1Selected from one of aromatic group and tetrahydrofuran group or a variety of, R2Straight chain selected from 3~6 carbon
One of alkyl, branched alkyl and alicyclic alkyl chain are a variety of.
In a more preferred embodiment, the R1Selected from ortho position phenyl ring, meta position phenyl ring, contraposition phenyl ring, naphthalene nucleus and tetrahydro furan
That mutters is one or more.
In one embodiment of the invention, the segment one of the thermoplastic polyester elastomer is poly terephthalic acid glycol
Ester segment.
A kind of soft segment monomer that the segment two of the thermoplastic polyester elastomer is added in polymerization process is described soft
Duan Danti is polyether polyol and/or polyester polyol.
In some embodiments, the molal weight of the polyether polyol is 600g/mol~2500g/mol, the polyester
The molal weight of polyalcohol is 600g/mol~2500g/mol.
In some embodiments, the general structure of the segment two is as follows:
Wherein, R3Selected from one of polyester group and polyether group or a variety of.
In a more preferred embodiment, the R3Selected from polyglycol ether, polypropylene glycol ether, polybutadiene alcohol ether and aliphatic
One of polyester is a variety of.
In some embodiments, the thermoplastic polyester elastomer further includes having catalyst, and the catalyst is selected from metal
One or more oxides, hydroxide, salt or ester-formin in tin, bismuth, titanium and magnesium.
In some embodiments, the thermoplastic polyester elastomer further includes having antioxidant, and the antioxidant is selected from
Hindered phenol, phosphorous acid and its lipid it is one or more.
In some embodiments, in order to enable foaming agent uniformly penetrating to enter the thermoplastic when carrying out supercritical foaming
In property polyester elastomer, the thermoplastic polyester elastomer is preferably the round and smooth nutty structure in surface, specifically, the thermoplastic
Property polyester elastomer be elliposoidal.
In some embodiments, the component of thermoplastic polyester elastomer further includes adjuvant, the adjuvant be fire retardant, resist it is quiet
One of electric agent, pigment, UV stabilizer, anti-hydrolysis agent, inorganic filler or organic filler are a variety of.The additive amount of the adjuvant
It is determined according to actual operation requirements.Advantage is that thermoplastic polyester elastomer expanded beads can be made to be suitable for different purposes.
If necessary to which the thermoplastic polyester elastomer is applied to safety footwear product or applied to the guarantor of precision instrument
Card, can add antistatic agent, in component to reduce the sheet resistance of product.Addition antistatic agent can accelerate contact surface
Electro-static Driven Comb speed, instrument damage or the danger of formation spark caused by avoiding because of accumulation of static electricity.
If necessary to the thermoplastic polyester elastomer is applied to for the use of color, for example, production sole and
Sports equipment, can add pigment in component, and the pigment can be toner or mill base.Addition pigment can be obtained pre- in component
If the thermoplastic polyester elastomer modified material expanded beads of color, and coloury product is made, facilitate different product
Mark and improve product aesthetics.
Another embodiment of the present invention provides the preparation method of thermoplastic polyester elastomer as described above, including following
Operating procedure:
By the dicarboxylic acids or dimethyl ester of aromatic group or tetrahydrofuran group, polyalcohol, the soft segment monomer of 3~6 carbon
It is mixed to get reaction mixture with prepolymer monomer, the prepolymer monomer is by aromatic monomer vinyl-bearing and acrylate
Class monomer polymerization obtains；
Reaction mixture first carries out esterification or ester exchange reaction, carries out polycondensation reaction afterwards, obtains thermoplastic polyester bullet
Property body.
Thermoplastic polyester elastomer preparation method provided by the invention is with aromatic monomer vinyl-bearing and acrylate
The prepolymer monomer that class monomer polymerization obtains is one of raw material, dicarboxylic acids or diformazan with aromatic group or tetrahydrofuran group
Thermoplastic polyester elastomer is made in ester, the polyalcohol of 3~6 carbon, soft segment monomer reaction, in the ester of thermoplastic polyester elastomer
In change/Exchange Ester Process, especially polycondensation process, the methacrylate component in prepolymer monomer participates in ester exchange reaction.
Stiff backbone and polyfunctional group structure based on prepolymer monomer, the prepolymer monomer can fast and effeciently improve thermoplastic poly
The melt strength of ester elastomer, reaches needed for foam application.By obtained by the thermoplastic polyester elastomer supercritical foaming
Expanded particle hole size is uniform, no aperture and poly- and hole.
In some embodiments, the prepolymer monomer can be obtained by self-control, the preparation method of the prepolymer monomer
Including following operation:
First solvent, aromatic monomer vinyl-bearing, acrylic ester monomer and initiator are mixed, at 70~120 DEG C
Reaction temperature reactive polymeric, obtain prepolymer monomer.
The solvent can be selected from the existing organic solvent for being not involved in reaction, such as ethyl alcohol, isopropanol, n-butanol, ethylene glycol list
One of methyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, ethyl acetate, butyl acetate are a variety of.
Preferably, the boiling point of the solvent is less than 140 DEG C, in order in esterification, ester exchange reaction or polycondensation reaction
Middle volatilization removal, is not involved in subsequent reactions.
The initiator can be selected from azodiisobutyronitrile, azobisisoheptonitrile, benzoyl peroxide, perbenzoic acid uncle
Butyl ester, peroxidating (2- ethyl) hecanoic acid t-butyl ester, peroxidating t-butyl formate, tert-butyl peroxide, tert-butyl hydroperoxide and
One of t-amyl peroxy hydrogen is a variety of.
It should be noted that in other embodiments, the prepolymer monomer can also pass through commercially available acquisition.
Due to that can be occurred freely with arbitrary proportion between aromatic monomer vinyl-bearing and acrylic ester monomer
Base polymerization, the ratio between aromatic monomer and acrylic ester monomer vinyl-bearing can be adjusted in a big way.
In a preferred embodiment, solvent: aromatic monomer vinyl-bearing: acrylic ester monomer: the matter of initiator
Amount is than being 1~50:70~99:1~30:0.1~5.
Inventor is had found by many experiments, when aromatic monomer vinyl-bearing and acrylic ester monomer are using above-mentioned
When mass ratio, obtained prepolymer monomer, which has the melt strength of final thermoplastic polyester elastomer obtained, preferably to be mentioned
Rise effect.
In some embodiments, the acrylic ester monomer is selected from methacrylic acid C1-6Alkyl ester, it is described vinyl-bearing
Aromatic monomer is selected from styrene or naphthalene ethylene.
In some embodiments, the number-average molecular weight of the prepolymer monomer is 300~5000.
In some embodiments, the dicarboxylic acids or dimethyl ester of aromatic group or tetrahydrofuran group: 3~6 carbon it is more
First alcohol: soft segment monomer: the mass ratio of prepolymer monomer is 150~250:60~160:100~300:25~75.
In some embodiments, the reaction temperature of the esterification or ester exchange reaction is 140 DEG C~200 DEG C, environment
Air pressure is normal pressure, and the reaction time is 1~8h.
After completing esterification or ester exchange reaction, needs to improve reaction temperature while to reduce air pressure anti-to carry out polycondensation
It answers.
In some embodiments, the reaction temperature of the polycondensation reaction be 240 DEG C~260 DEG C, ambient pressure be 133Pa with
Under, reaction to stirring torque is not further added by.
In some embodiments, the dicarboxylic acids or dimethyl ester of the aromatic group or tetrahydrofuran group are selected from adjacent benzene two
Formic acid, M-phthalic acid, terephthalic acid (TPA), naphthalenedicarboxylic acid, repefral, dimethyl isophthalate, to benzene two
Formic acid dimethyl ester and naphthalene diformic acid dimethyl ester it is one or more.
In some embodiments, the soft segment monomer is selected from polyether polyol and/or polyester polyol.
In some embodiments, catalyst has been additionally added in reaction mixture, the catalyst is selected from metallic tin, bismuth, titanium
With oxide one or more in magnesium, hydroxide, salt or ester-formin.
The catalyst is used to accelerate the reaction speed of reaction.
In some embodiments, antioxidant has been additionally added in reaction mixture, the antioxidant is selected from hindered phenol, Asia
Phosphoric acid and its lipid it is one or more.
The antioxidant is used to improve the antioxygenic property of thermoplastic polyester elastomer.
Another embodiment of the present invention provides a kind of thermoplastic polyester elastomer foaming body, by thermoplasticity as described above
Polyester elastomer foams to obtain.
In some embodiments, the foaming method of the thermoplastic polyester elastomer foaming body is supercritical foaming, foaming
Agent is selected from one of carbon dioxide and nitrogen or a variety of.
In some embodiments, the density of the thermoplastic polyester elastomer foaming body is 0.08~0.80g/m3, abscess
Diameter is 20~160 μm.
Another embodiment of the present invention discloses above-mentioned thermoplastic polyester elastomer foaming methods, including following operation to walk
It is rapid:
The thermoplastic polyester elastomer being prepared using thermoplastic polyester elastomer preparation method as described above；
Thermoplastic polyester elastomer is added in high-pressure installation, volatile foaming agent is added, is warming up to thermoplastic polyester bullet
Property body softening point, pressurization keep the volatile foaming agent in a supercritical state and infiltrate through in thermoplastic polyester elastomer,
Heat-insulation pressure keeping；
After the completion of foaming agent infiltration, pressure is reduced, thermoplastic polyester elastomer foaming forms thermoplastic polyester elastomer hair
Foam.
In some embodiments, before putting into high-pressure installation, by thermoplastic polyester elastomer in molten condition from extrusion
Machine squeezes out, and imderwater cutting is at graininess, in order to the infiltration of foaming agent.
In some embodiments, in foaming agent process of osmosis, keep temperature be 100 DEG C~160 DEG C, pressure be 10MPa~
30MPa。
The present invention is further detailed by the following examples.
Embodiment 1
The present embodiment for illustrate thermoplastic polyester elastomer disclosed by the invention, thermoplastic polyester elastomer foaming body and
Preparation method, including following operating procedure:
The butyl acetate of 17.5KG is added in 100L reaction kettle, is warming up to 120 DEG C, 1.125KG mistake is added dropwise by metering pump
The mixed solution for aoxidizing t-butyl perbenzoate, 16.7KG styrene and 0.8KG methyl methacrylate, drips for 2.5 hours.Drop
The reaction was continued at 120 DEG C 4 hours after the completion of adding.The PA intermediate of styrene methyl methacrylate random copolymerization is obtained, is surveyed
Examination obtains it and contains 50.1% admittedly, viscosity 1150cps, number-average molecular weight 2160.
Be added in 100L reaction kettle the butanediol of 7.33KG, 12.1KG dimethyl terephthalate (DMT), 10.5KG poly- four
The PA intermediate of hydrogen furans dihydric alcohol, 2.7KG, and as the butyl titanate 12.5g of catalyst, antioxidant 1010 weight
12.5g.It is warming up to 120 DEG C to start to stir, and continues to be warming up to 140 DEG C of -200 DEG C of synthesis under normal pressure 2 hours, then be gradually heated to
240-260 DEG C, be decompressed to 133Pa or less reaction be not further added by torque, obtain thermoplastic polyester elastomer.Reaction terminates.It should
Thermoplastic polyester elastomer screw rod transmission obtains the ellipsoidal particle of average grain diameter 2.50mm to underwater cutpellet.
The particle puts into autoclave in batches, is infiltrated under 140 DEG C, 12Mpa pressure with supercritical carbon dioxide
15min, then quick pressure releasing, discharging obtain TPEE foaming body.
Embodiment 2
The present embodiment for illustrate thermoplastic polyester elastomer disclosed by the invention, thermoplastic polyester elastomer foaming body and
Most operating procedure in preparation method, including embodiment 1, the difference is that:
The dosage of PA intermediate is changed to 5.4KG by 2.7KG.
Embodiment 3
The present embodiment for illustrate thermoplastic polyester elastomer disclosed by the invention, thermoplastic polyester elastomer foaming body and
Most operating procedure in preparation method, including embodiment 1, the difference is that:
PA intermediate the preparation method comprises the following steps:
The butyl acetate of 17.5KG is added in 100L reaction kettle, is warming up to 120 DEG C, 1.125KG mistake is added dropwise by metering pump
The mixed solution for aoxidizing t-butyl perbenzoate, 15.9KG styrene and 1.6KG methyl methacrylate, drips for 2.5 hours.Drop
At 120 DEG C, the reaction was continued 4 hours after the completion of adding.The PA intermediate of styrene methyl methacrylate random copolymerization is obtained, admittedly contain
50.0%, viscosity 1290cps, number-average molecular weight 2185.
Comparative example 1
This comparative example foams for comparative illustration thermoplastic polyester elastomer disclosed by the invention, thermoplastic polyester elastomer
Most operating procedure in body and preparation method thereof, including embodiment 1, the difference is that:
That PA intermediate is not added in reaction.
Comparative example 2
This comparative example foams for comparative illustration thermoplastic polyester elastomer disclosed by the invention, thermoplastic polyester elastomer
Most operating procedure in body and preparation method thereof, including comparative example 1, the difference is that:
By obtained thermoplastic polyester elastomer and the PA intermediate for pumping solvent at 210 DEG C in total on double screw extruder
It is mixed, it is delivered to underwater cutpellet after blending, obtains the ellipsoidal particle of average grain diameter 2.50mm.
Its PA intermediate the preparation method is as follows:
The butyl acetate of 17.5KG is added in 100L reaction kettle, is warming up to 120 DEG C, 1.125KG mistake is added dropwise by metering pump
The mixed solution for aoxidizing t-butyl perbenzoate, 16.7KG styrene and 0.8KG methyl methacrylate, drips for 2.5 hours.Drop
The reaction was continued at 120 DEG C 4 hours after the completion of adding.The PA intermediate of styrene methyl methacrylate random copolymerization is obtained, is surveyed
Examination obtains it and contains 50.1% admittedly, viscosity 1150cps, number-average molecular weight 2160.
Comparative example 3
This comparative example foams for comparative illustration thermoplastic polyester elastomer disclosed by the invention, thermoplastic polyester elastomer
Most operating procedure in body and preparation method thereof, including comparative example 1, the difference is that:
The PA intermediate of obtained thermoplastic polyester elastomer and the 2.7KG for pumping solvent is squeezed at 210 DEG C in twin-screw
It is blended on machine out, underwater cutpellet is delivered to after blending, obtain the ellipsoidal particle of average grain diameter 2.50mm.
Its PA intermediate the preparation method is as follows:
The butyl acetate of 17.5KG is added in 100L reaction kettle, is warming up to 120 DEG C, 1.125KG mistake is added dropwise by metering pump
The mixed solution for aoxidizing t-butyl perbenzoate, 15.9KG styrene and 1.6KG methyl methacrylate, drips for 2.5 hours.Drop
At 120 DEG C, the reaction was continued 4 hours after the completion of adding.The PA intermediate of styrene methyl methacrylate random copolymerization is obtained, admittedly contain
50.0%, viscosity 1290cps, number-average molecular weight 2185.
Comparative example 4
This comparative example foams for comparative illustration thermoplastic polyester elastomer disclosed by the invention, thermoplastic polyester elastomer
Most operating procedure in body and preparation method thereof, including comparative example 1, the difference is that:
By obtained thermoplastic polyester elastomer and 3.0KG TPU (trade mark: Bayer Material Science Desmopan9390AU)
At 210 DEG C in being blended on double screw extruder, it is delivered to underwater cutpellet after blending, obtains the elliposoidal of average grain diameter 2.50mm
Grain.
Performance test
The TPEE foaming body that above-described embodiment 1~3 and comparative example 1~4 are prepared performs the following performance tests:
Carry out the detection of average grain diameter and density；
Pass through the appearance of magnifying glass naked-eye observation TPEE foaming body, if blast hole occur；
Pass through the aperture uniformity in imaging amplification observation unit area, if macropore occur.
Obtained test result filling table 1.
Table 1
Appearance: ◎ is without blast hole, a small amount of blast hole in surface smooth zero or a large amount of blast holes of fold △ or fold
Internal macropore: ◎ is a large amount of without zero a small amount of △
The test result of Examples 1 to 3 and comparative example 1 can be seen that using thermoplastic poly provided by the invention from table 1
Ester elastomer has the advantages that foaming aperture is uniform especially suitable for foam material field, foamed material obtained.
The test result of comparative example 1~3 and comparative example 2,3 is it is found that relative to by PA intermediate and thermoplastic polyester
The mode that elastomer directly blends, the present invention in using PA intermediate as the polymerized monomer of thermoplastic polyester elastomer, Neng Gouyou
Effect be directly modified to thermoplastic polyester elastomer, its abscess sophistication of foamed material obtained and uniformity obtain effectively
Improve.
The test result of comparative example 1~3 and comparative example 4 relative in thermoplastic polyester elastomer it is found that be added
The mode of melt viscosity modifiers, the present invention in using PA intermediate as the polymerized monomer of thermoplastic polyester elastomer, Neng Gouyou
Effect be directly modified to thermoplastic polyester elastomer, its abscess sophistication of foamed material obtained and uniformity obtain effectively
Improve.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of thermoplastic polyester elastomer, which is characterized in that including following segment:
Segment one: polyester hard section；
Segment two: polyester soft segment and/or polyester soft segment；
Segment three: general structure is as follows:
Wherein, R4Selected from aromatic group；R5One in branched alkyl selected from H, the straight chained alkyl of 1~6 carbon and 1~6 carbon
Kind is a variety of, and the value that the value of m is 5~30, n is 2~10.
2. thermoplastic polyester elastomer according to claim 1, which is characterized in that segment one: segment two: the matter of segment three
Amount is than being 30~70:30~70:5~15.
3. thermoplastic polyester elastomer according to claim 1, which is characterized in that the general structure of the segment one is such as
Under:
Wherein, R1Selected from one of aromatic group and tetrahydrofuran group or a variety of, R2Straight chain alkane selected from 3~6 carbon
One of base, branched alkyl and alicyclic alkyl chain are a variety of.
4. thermoplastic polyester elastomer according to claim 3, which is characterized in that the R1Selected from ortho position phenyl ring, meta position benzene
Ring aligns the one or more of phenyl ring, naphthalene nucleus and tetrahydrofuran.
5. thermoplastic polyester elastomer according to claim 1, which is characterized in that the general structure of the segment two is such as
Under:
Wherein, R3Selected from one of polyester group and polyether group or a variety of.
6. thermoplastic polyester elastomer according to claim 5, which is characterized in that the R3Selected from polyglycol ether, poly- third
One of glycol ethers, polybutadiene alcohol ether and aliphatic polyester are a variety of.
7. thermoplastic polyester elastomer according to claim 1, which is characterized in that it further include having catalyst, the catalysis
Agent oxide one or more in metallic tin, bismuth, titanium and magnesium, hydroxide, salt or ester-formin.
8. thermoplastic polyester elastomer according to claim 1, which is characterized in that it further include having antioxidant, it is described anti-
Oxidant is selected from the one or more of hindered phenol, phosphorous acid and its lipid.
9. a kind of thermoplastic polyester elastomer foaming body, which is characterized in that the heat as described in any one of claim 1~8
Plasticity polyester elastomer foams to obtain.
10. thermoplastic polyester elastomer foaming body according to claim 9, which is characterized in that the thermoplastic polyester bullet
Property body foaming body foaming method be supercritical foaming, foaming agent be selected from one of carbon dioxide and nitrogen or a variety of.
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| CN201910313106.XA CN110128638B (en) | 2019-04-18 | 2019-04-18 | Thermoplastic polyester elastomer and foaming body |
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| CN201910313106.XA CN110128638B (en) | 2019-04-18 | 2019-04-18 | Thermoplastic polyester elastomer and foaming body |
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| CN110128638B CN110128638B (en) | 2022-03-22 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5519066A (en) * | 1995-05-08 | 1996-05-21 | Eastman Chemical Company | Foamable branched polyesters |
| CN102924676A (en) * | 2011-08-12 | 2013-02-13 | 中国石油化工股份有限公司 | Transparent copolyester and its preparation method |
-
2019
- 2019-04-18 CN CN201910313106.XA patent/CN110128638B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5519066A (en) * | 1995-05-08 | 1996-05-21 | Eastman Chemical Company | Foamable branched polyesters |
| CN1189173A (en) * | 1995-05-08 | 1998-07-29 | 伊斯曼化学公司 | Foamable polyesters branched with ethylene copolymers |
| CN102924676A (en) * | 2011-08-12 | 2013-02-13 | 中国石油化工股份有限公司 | Transparent copolyester and its preparation method |
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| CN110128638B (en) | 2022-03-22 |
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