CN105482388B - A kind of polyester elastomer composition - Google Patents
A kind of polyester elastomer composition Download PDFInfo
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- CN105482388B CN105482388B CN201610066077.8A CN201610066077A CN105482388B CN 105482388 B CN105482388 B CN 105482388B CN 201610066077 A CN201610066077 A CN 201610066077A CN 105482388 B CN105482388 B CN 105482388B
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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
- C08L67/02—Polyesters derived from 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
- 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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The present invention relates to a kind of polyester elastomer composition, component includes：The parts by weight of polyester elastomer 100, the parts by weight of based elastomers 1~30 and the poly- carbonization parts by weight of two subcompound 0.01~10；The specific insulation of the polyester elastomer composition improves 1~2 order of magnitude than the specific insulation of the polyester elastomer；Long-term hydrolytic resistance is improved significantly, and after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity more than 85%, elongation at break keeps more than 80%；Fluidity of molten is reduced, melt index is down to below 10g/10min by 20~30g/10min, so that processing and forming is more stable.A kind of polyester elastomer composition of the present invention, electrical insulating property is excellent, and with good hydrolytic resistance and stable processing forming, suitable for extruding, being molded, the various forming methods such as rolling.
Description
Technical field
The present invention relates to a kind of polyester elastomer composition.
Background technology
Polyester elastomer due to excellent physical and mechanical properties, as high intensity, high tenacity, fatigue durability, wearability,
Oil resistivity, chlorine resistance and lower temperature resistance etc., its application field constantly extend.Other specific functions are required also more and more simultaneously
Height, such as in terms of track traffic cable and automobile wiring harness, polyester elastomer relies on the advantage of itself each side, is individual fine
Selection, but its electrical insulating property also has a certain distance, and specific insulation is relatively low, probably in 10E10~10E13 Ω cm
(the polyester elastomer specific insulation of different hardness is different, increases with the increase specific insulation of hardness), and track traffic
Cable and automobile wiring harness etc. want >=10E15 Ω cm to the exigent application scenario of insulating properties, specific insulation, and it can not
Meet use demand.Clearly propose to improve the specific insulation of polyester elastomer by modified currently without pertinent literature.
Meanwhile it is well known that in the modification of polyester elastomer, after poly- carbodiimide introduces as hydrolysis-resisting agent, energy
The hydrolytic resistance of polyester elastomer is significantly improved, in documents below, all mentions and is used for polycarbodiimide to improve polyester bullet
The short-term or long-term hydrolytic resistance of property body.
CN 1914274A disclose polyester elastomer composition, and said composition includes polyester elastomer, relative to 100 weights
Part polyester elastomer is measured as the epoxide of 0.01~10 parts by weight and the polycarbodiimide of 0.01~10 parts by weight, narration
The advantages of be hydrolytic resistance, heat resistance, oil resistivity, wear resistance and excellent impact resistance.
CN 101759961A disclose composition, and said composition is carbonized by the polyester containing terminal carbonyl and end-capping reagent
Diimine compounds blending squeezes what is obtained, and the purpose of the invention is to improve hydrolytic resistance.
CN 1717452A disclose composition, said composition include 100 parts by weight by thermoplastic aromatic's polyester with it is interior
Terminal carboxyl group value obtained by ester reaction is less than 5 milligrams KOH/ grams of polyester block copolymer, and 0.05~5 parts by weight are gathered
Carbodiimide compound, epoxides more than 2 functional groups of 0.05~5 parts by weight, the phenol system of 0.01~0.5 parts by weight
The sulphur system antioxidant of antioxidant and 0.01~0.5 parts by weight, it is that hydrolytic resistance, heat resistance and yellowing resistance are excellent the advantages of narration
It is good.
As can be seen here, in the prior art, polycarbodiimide improves polyester elastomer mainly as hydrolysis-resisting agent
Hydrolytic resistance, it is not involved with to the improvement in terms of polyester elastomer electrical insulating property.
The content of the invention
It is an object of the invention to provide a kind of polyester elastomer composition, improves the electrical insulating property of polyester elastomer, improves
Specific insulation, expand its application.A kind of polyester elastomer composition of the present invention, specific insulation compare polyester elastomer
1~2 order of magnitude of raising, while also provide good hydrolytic resistance and processing stability.
A kind of polyester elastomer composition of the present invention, component include：
The parts by weight of polyester elastomer 100；
The parts by weight of based elastomers 1~30；
The poly- carbonization parts by weight of two subcompound 0.01~10；
The specific insulation of the polyester elastomer composition improves 1~2 than the specific insulation of the polyester elastomer
The individual order of magnitude, long-term hydrolytic resistance are improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity
More than 85%, elongation at break keeps more than 80%；Fluidity of molten is reduced, melt index is down to by 20~30g/10min
Below 10g/10min, so that processing and forming is more stable.
If the addition of based elastomers is less than above range, the effect for improving specific insulation is not often had
Fruit, if when excessive, having slackened the excellent physical property of polyester elastomer, while deteriorate with the compatibility of polyester elastomer.Its
In, the addition preferably 5~20% of based elastomers, this addition in the range of when, as far as possible improve specific insulation it is same
When, the damage to polyester elastomer physical property can be reduced as far as possible.If the addition of polycarbodiimide compound is less than above-mentioned model
When enclosing, then the effect for improving specific insulation is not had yet, if when excessive simultaneously, it is also difficult to obtain significantly more effect, make
Material cost increase.Wherein, preferably addition is 0.05~5%.While specific insulation is improved, it will not increase as far as possible too
High cost.
As preferable technical scheme：
A kind of polyester elastomer composition as described above, the hard segment of the polyester elastomer gather for crystalline aromatic
Ester, soft chain segment in aliphatic polyether, aliphatic polyester and fatty poly-ester carbonate more than one.
A kind of polyester elastomer composition as described above, the crystalline aromatic polyester is poly terephthalic acid second two
Alcohol ester, polybutylene terephthalate (PBT), PEN, P-hydroxybenzoic acid copolyester, 6- hydroxyl -2- carboxyls
One or more of naphthalene copolyester.
A kind of polyester elastomer composition as described above, the aliphatic polyether are the polymer or glycol of cyclic ether
Condensation product, be polyethylene glycol, polypropylene glycol or polytetramethylene glycol more than one, wherein, the equal molecule of number of polyethylene glycol
Measure as 1000~4000, the number-average molecular weight of polypropylene glycol is 1000~4000, and the number-average molecular weight of polytetramethylene glycol is
1000~4000；The aliphatic polyester is polylactone, the condensation product of aliphatic dibasic acid and aliphatic diol, aliphatic hydroxyl
One or more of condensation product of alkyl carboxylic acid；The fatty poly-ester carbonate is poly dimethyl trimethylene carbonate, poly- list
One or more of methyl trimethylene carbonate, PTMC and polyhexamethylene carbonic ester.
A kind of polyester elastomer composition as described above, in the polyester elastomer, the weight percent of the hard segment
Than for 25~90%.When hard segment contents are less than 25%, heat resistance, wearability and oil resistivity reduce；Hard segment contents are higher than
When 90%, fatigue durability and impact resistance reduce.
A kind of polyester elastomer composition as described above, the based elastomers be ethylene-ethyl acetate copolymer,
Vinyl-acrylate copolymer, ethylene-hexene co-polymers or ethylene-octene copolymer.
A kind of polyester elastomer composition as described above, the vinyl-acrylate copolymer is ethene-metering system
Acid esters, ethylene-ethyl acrylate or ethylene-butyl acrylate.
Vinyl-acrylate copolymer is selected：Ethylene-methyl acrylate Elvaloy AC 1125, ethene-ethyl third
Olefin(e) acid ester Elvaloy AC 2116 or ethylene-butyl acrylate Elvaloy AC 3135 etc..
Ethylene-hexene co-polymers are selected：EXACT4151Cast or EXACT4056 etc..
Ethylene-octene copolymer is selected：ENGAGE 8200, ENGAGE 8150 or ENGAGE 8450 etc..
A kind of polyester elastomer composition as described above, two subcompounds of the poly- carbonization are to contain structure shown in following formula
The compound of unit：
In formula, R represents substituted or unsubstituted alkyl, is aliphatic alkyl, alicyclic alkyl, aromatic hydrocarbyl or fragrance
Race's aliphatic group；
M is the integer of 2 and the above.
A kind of polyester elastomer composition as described above, two subcompounds of the poly- carbonization are homopolymer or different monomers
Copolymer.
A kind of polyester elastomer composition as described above, two subcompounds of the poly- carbonization are that aliphatic poly carbonization two is sub-
Amine, alicyclic polycarbodiimide or aromatic polycarbodiimide；
The aliphatic polycarbodiimide is polyhexamethylene carbodiimides, poly- (3- methyl hexa-methylene carbonization two
Imines) or polyalkylene carbodiimides；
The alicyclic polycarbodiimide is poly- (4,4 '-dicyclohexyl methyl hydride carbodiimides)；
The aromatic polycarbodiimide is poly (arylene ether) carbodiimides or poly- diaryl alkane carbodiimides.
The present invention makes volume by the way that based elastomers, polycarbodiimide compound are incorporated into polyester elastomer
1~2 order of magnitude of raising of resistivity ratio polyester elastomer, while also provide good hydrolytic resistance and processing stability.Its
Mechanism is probably：Polycarbodiimide by being chemically reacted with the moisture in the end carboxyl and material in polyester elastomer,
Electrically conductive group is eliminated, while introduces the high based elastomers of nonpolar molecule proportion, and then is greatly improved poly-
The specific insulation of ester elastomer.Further, since polycarbodiimide eliminates the end that it can be caused to hydrolyze in polyester elastomer
Carboxyl and moisture, the urea-based compound for not having any negative effect to the stability of material is generated, it is water-fast so as to substantially increase
Xie Xing.Simultaneously as each polycarbodiimide molecule containing the carbodiimide groups of 2 or more, is each carbonized two
Imine group can react with the end carboxyl of polyester elastomer, it is possible thereby to certain crosslinking be produced, along with lazy flow
Based elastomers introducing, so as to reduce the fluidity of molten of polyester elastomer, improve processing stability.
, can be to the present invention in the range of the effect of the present invention is not damaged in the polyester elastomer composition of the present invention
Polymer composition in add conventional additives.For example, fire retardant and retardant synergist can be added for improving anti-flammability
Purpose, and antioxidant and heat stabilizer can be added and be used to improve heat resistance and prevent the purpose of discoloration.Other additive bags
Include filler, inert filler, reinforcing agent, heavy metal deactivator, antistatic agent, impact modifying agent, viscosity improver, nucleator,
Toner and dyestuff, lubricant, plasticizer, releasing agent, UV stabilizer etc..
Any blend method can be used to obtain the polymer composition of the present invention by the way that all component materials are blended.One
As preferably make these blend components as uniform as possible.As specific example, mixer such as blender, kneader, class primary are used
In mixer, roller extruder etc. all component materials are mixed into uniformly, to obtain resin combination.Or can be mixed
A part of material is mixed in conjunction machine, and then surplus material is added and further mixed until uniform.Or it can do in advance
Dry intermingling material, then with the extruder melting of heating and mediate until uniform, then extruded, be granulated with strip.
The polyester elastomer composition of the present invention can be used for being injection moulded, extrusion molding, calendering formation, foaming etc. it is a variety of into
Type mode.
Beneficial effect：
A kind of polyester elastomer composition of the present invention, electrical insulating property is excellent, and specific insulation carries than polyester elastomer
High 1~2 order of magnitude, and with good hydrolytic resistance and stable processing forming, suitable for extruding, being molded, pressing
The various forming methods such as prolong.
Embodiment
The invention will be further elucidated with reference to specific embodiments.It should be understood that these embodiments are merely to illustrate this hair
Bright rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, art technology
Personnel can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Fixed scope.
In embodiment, assay value is to measure by the following method：
Specific insulation：With according to GB/T 1410-2006, using 1000V voltage determinations；
Melt index：Determined according to ISO 1133-2005；
Tensile break strength：According to ISO 37, determined using 50mm/min test speed；
Tension fracture elongation rate：According to ISO 37, determined using 50mm/min test speed；
Water resistance is tested：Test film is impregnated 90 days in the hot water of 95 DEG C of temperature.After here, test film is taken out,
Allow to cool down, test tensile break strength and elongation at break.In order to compare, also sample is determined before water resistance test and drawn
Stretch fracture strength and elongation at break.
Embodiment 1
A kind of polyester elastomer composition, component include：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-ethyl acetate copolymer 1；
The poly- carbonization parts by weight of two subcompound 0.01；
Two subcompounds of poly- carbonization are polyhexamethylene carbodiimides；
The hard segment of polyester elastomer is polyethylene terephthalate, and soft chain segment is that mass ratio is 1:2 poly- second two
Alcohol and polypropylene glycol, wherein, the number-average molecular weight of polyethylene glycol is 1000, and the number-average molecular weight of polypropylene glycol is 1000.Wherein,
In polyester elastomer, the percentage by weight of hard segment is 25%.
The specific insulation of polyester elastomer composition improves 1 order of magnitude than the specific insulation of polyester elastomer, long
Phase hydrolytic resistance is improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 88%, and extension at break
Rate keeps 85%；Fluidity of molten is reduced, melt index is down to 9g/10min by 20g/10min, so that processing and forming is more
It is stable.
Embodiment 2
A kind of polyester elastomer composition, component include：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-methyl acrylate Elvaloy AC 1,125 30；
The poly- carbonization parts by weight of two subcompound 10；
Two subcompounds of poly- carbonization are poly- (3- methyl hexa-methylenes carbodiimides)；
Polyester elastomer is block copolyether ester (the Shanghai benefit of polybutylene terephthalate (PBT) and polytetramethylene glycol
Play the manufacture of new material Co., Ltd, trade names " HP4011 ", shore hardness 40D), the hard segment of polyester elastomer is to gather to benzene
Dioctyl phthalate butanediol ester, soft chain segment are polytetramethylene glycol, wherein, the number-average molecular weight of polytetramethylene glycol is 2000.
Wherein, in polyester elastomer, the percentage by weight of hard segment is 40%.
The specific insulation of polyester elastomer composition improves 2 orders of magnitude than the specific insulation of polyester elastomer, long
Phase hydrolytic resistance is improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 88%, and extension at break
Rate keeps 82%；Fluidity of molten is reduced, melt index is down to 8g/10min by 30g/10min, so that processing and forming is more
It is stable.
Embodiment 3
A kind of polyester elastomer composition, component include：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-ethyl acrylate Elvaloy AC 2,116 10；
The poly- carbonization parts by weight of two subcompound 0.05；
Two subcompounds of poly- carbonization are polyalkylene carbodiimides.
The hard segment of polyester elastomer is PEN, and soft chain segment is polyethylene glycol, wherein, polyethylene glycol
Number-average molecular weight is 2000.Wherein, in polyester elastomer, the percentage by weight of hard segment is 50%.
The specific insulation of polyester elastomer composition improves 1 order of magnitude than the specific insulation of polyester elastomer, long
Phase hydrolytic resistance is improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 95%, and extension at break
Rate keeps 85%；Fluidity of molten is reduced, melt index is down to 8g/10min by 25g/10min, so that processing and forming is more
It is stable.
Embodiment 4
A kind of polyester elastomer composition, it is that component includes：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-butyl acrylate Elvaloy AC 3,135 15；
The poly- carbonization parts by weight of two subcompound 1；
Two subcompounds of poly- carbonization are poly- (4,4 '-dicyclohexyl methyl hydride carbodiimides)；
The hard segment of polyester elastomer is P-hydroxybenzoic acid copolyester, and soft chain segment is polypropylene glycol, wherein, poly- the third two
The number-average molecular weight of alcohol is 3000.Wherein, in polyester elastomer, the percentage by weight of hard segment is 28%.
The specific insulation of polyester elastomer composition improves 2 orders of magnitude than the specific insulation of polyester elastomer, long
Phase hydrolytic resistance is improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 86%, and extension at break
Rate keeps 82%；Fluidity of molten is reduced, melt index is down to 8g/10min by 25g/10min, so that processing and forming is more
It is stable.
Embodiment 5
A kind of polyester elastomer composition, it is that component includes：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-hexene co-polymers EXACT4151Cast 18；
The poly- carbonization parts by weight of two subcompound 6；
Two subcompounds of poly- carbonization are poly (arylene ether) carbodiimides.
The hard segment of polyester elastomer is 6- hydroxyl -2- carboxyl naphthalene copolyesters, and soft chain segment is polytetramethylene glycol, its
In, the number-average molecular weight of polytetramethylene glycol is 1000.Wherein, in polyester elastomer, the percentage by weight of hard segment is
80%.
The specific insulation of polyester elastomer composition improves 2 orders of magnitude than the specific insulation of polyester elastomer, long
Phase hydrolytic resistance is improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 88%, and extension at break
Rate keeps 81%；Fluidity of molten is reduced, melt index is down to 7g/10min by 28g/10min, so that processing and forming is more
It is stable.
Embodiment 6
A kind of polyester elastomer composition, component include：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-octene copolymer ENGAGE 8,200 12；
The poly- carbonization parts by weight of two subcompound 6；
Two subcompounds of poly- carbonization are poly- diaryl alkane carbodiimides.
The hard segment of polyester elastomer is that mass ratio is 1:2 polyethylene terephthalate, poly terephthalic acid fourth
Diol ester, soft chain segment are polycaprolactone.
Wherein, in polyester elastomer, the percentage by weight of hard segment is 35%.
The specific insulation of polyester elastomer composition improves 2 orders of magnitude than the specific insulation of polyester elastomer, long
Phase hydrolytic resistance is improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 89%, and extension at break
Rate keeps 88%；Fluidity of molten is reduced, melt index is down to 7g/10min by 30g/10min, so that processing and forming is more
It is stable.
Embodiment 7
A kind of polyester elastomer composition, component include：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-ethyl acetate copolymer 2；
The poly- carbonization parts by weight of two subcompound 6；
Two subcompounds of poly- carbonization are polyhexamethylene carbodiimides.
The hard segment of polyester elastomer is that mass ratio is 2:1 polybutylene terephthalate (PBT) and poly- naphthalene diacid ethylene glycol
Ester, soft chain segment are polybutylene glyool adipate.
Wherein, in polyester elastomer, the percentage by weight of hard segment is 60%.
The specific insulation of polyester elastomer composition improves 1 order of magnitude than the specific insulation of polyester elastomer, long
Phase hydrolytic resistance is improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 92%, and extension at break
Rate keeps 88%；Fluidity of molten is reduced, melt index is down to 10g/10min by 20g/10min, so that processing and forming is more
It is stable.
Embodiment 8
A kind of polyester elastomer composition, component include：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-methyl acrylate Elvaloy AC 1,125 12；
The poly- carbonization parts by weight of two subcompound 10；
Two subcompounds of poly- carbonization are poly- (3- methyl hexa-methylenes carbodiimides).The hard segment of polyester elastomer is poly-
Naphthalene naphthalate, soft chain segment are poly dimethyl trimethylene carbonate.Wherein, in polyester elastomer, the weight of hard segment
Percentage is 55%.
The specific insulation of polyester elastomer composition improves 1 order of magnitude than the specific insulation of polyester elastomer, long
Phase hydrolytic resistance is improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 85%, and extension at break
Rate keeps 86%；Fluidity of molten is reduced, melt index is down to 9g/10min by 20g/10min, so that processing and forming is more
It is stable.
Embodiment 9
A kind of polyester elastomer composition, component include：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-octene copolymer ENGAGE 8,150 28；
The poly- carbonization parts by weight of two subcompound 0.02；
Two subcompounds of poly- carbonization are polyalkylene carbodiimides.
The hard segment of polyester elastomer is PEN, and soft chain segment is poly- monomethyl trimethylene carbonate.
Wherein, in polyester elastomer, the percentage by weight of hard segment is 35%.
The specific insulation of polyester elastomer composition improves 2 orders of magnitude than the specific insulation of polyester elastomer, long
Phase hydrolytic resistance is improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 89%, and extension at break
Rate keeps 85%；Fluidity of molten is reduced, melt index is down to 7g/10min by 28g/10min, so that processing and forming is more
It is stable.
Embodiment 10
A kind of polyester elastomer composition, component include：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-ethyl acetate copolymer 8；
The poly- carbonization parts by weight of two subcompound 0.08；
Two subcompounds of poly- carbonization are poly (arylene ether) carbodiimides.
The hard segment of polyester elastomer is that mass ratio is 1:1 P-hydroxybenzoic acid copolyester and 6- hydroxyl -2- carboxyls
Naphthalene copolyester, soft chain segment are PTMC.
Wherein, in polyester elastomer, the percentage by weight of hard segment is 25%.
The specific insulation of polyester elastomer composition improves 1 order of magnitude than the specific insulation of polyester elastomer, long
Phase hydrolytic resistance is improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 89%, and extension at break
Rate keeps 86%；Fluidity of molten is reduced, melt index is down to 10g/10min by 22g/10min, so that processing and forming is more
It is stable.
Embodiment 11
A kind of polyester elastomer composition, component include：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-octene copolymer ENGAGE 8,450 28；
The poly- carbonization parts by weight of two subcompound 10；
Two subcompounds of poly- carbonization are polyalkylene carbodiimides.
The hard segment of polyester elastomer is PEN, and soft chain segment is polyhexamethylene carbonic ester.
Wherein, in polyester elastomer, the percentage by weight of hard segment is 30%.
The specific insulation of polyester elastomer composition improves 2 orders of magnitude than the specific insulation of polyester elastomer, long
Phase hydrolytic resistance is improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 86%, and extension at break
Rate keeps 81%；Fluidity of molten is reduced, melt index is down to 8g/10min by 26g/10min, so that processing and forming is more
It is stable.
Embodiment 12
A kind of polyester elastomer composition, component include：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-ethyl acetate copolymer 1；
The poly- carbonization parts by weight of two subcompound 0.01；
Two subcompounds of poly- carbonization are polyhexamethylene carbodiimides；
The hard segment of polyester elastomer is polyethylene terephthalate, and soft chain segment is that mass ratio is 2:1 poly- Sanya
Methyl carbonic and polyhexamethylene carbonic ester.Wherein, in polyester elastomer, the percentage by weight of hard segment is 25%.Polyester
The specific insulation of elastic composition improves 1 order of magnitude than the specific insulation of polyester elastomer, and long-term hydrolytic resistance obtains
To significantly improving, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 88%, elongation at break keeps 85%；
Fluidity of molten is reduced, melt index is down to 9g/10min by 20g/10min, so that processing and forming is more stable.
Embodiment 13
A kind of polyester elastomer composition, component include：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-methyl acrylate Elvaloy AC 1,125 30；
The poly- carbonization parts by weight of two subcompound 10；
Two subcompounds of poly- carbonization are poly- (3- methyl hexa-methylenes carbodiimides)；
(it is limited that Shanghai benefit plays new material for polybutylene terephthalate (PBT) and the block copolyether ester of polytetramethylene glycol
Company manufactures, trade names " HP6301 ", shore hardness 63D), the hard segment of polyester elastomer is polybutylene terephthalate
Ester, soft chain segment are polytetramethylene glycol, and wherein the number-average molecular weight of polytetramethylene glycol is 1000.Wherein, polyester
In body, the percentage by weight of hard segment is 80%.
The specific insulation of polyester elastomer composition improves 2 orders of magnitude than the specific insulation of polyester elastomer, long
Phase hydrolytic resistance is improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 88%, and extension at break
Rate keeps 82%；Fluidity of molten is reduced, melt index is down to 8g/10min by 30g/10min, so that processing and forming is more
It is stable.
Embodiment 14
A kind of polyester elastomer composition, it is that component includes：
The parts by weight of polyester elastomer 100；
The parts by weight of ethylene-hexene co-polymers EXACT4056 18；
The poly- carbonization parts by weight of two subcompound 6；
Two subcompounds of poly- carbonization are poly (arylene ether) carbodiimides.
The hard segment of polyester elastomer is 6- hydroxyl -2- carboxyl naphthalene copolyesters, and soft chain segment is polytetramethylene glycol, its
In, the number-average molecular weight of polytetramethylene glycol is 1000.Wherein, in polyester elastomer, the percentage by weight of hard segment is
80%.
The specific insulation of polyester elastomer composition improves 1 order of magnitude than the specific insulation of polyester elastomer, long
Phase hydrolytic resistance is improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 88%, and extension at break
Rate keeps 81%；Fluidity of molten is reduced, melt index is down to 7g/10min by 28g/10min, so that processing and forming is more
It is stable.
Claims (10)
- A kind of 1. polyester elastomer composition, it is characterized in that component is：The parts by weight of polyester elastomer 100；The parts by weight of based elastomers 1~30；The poly- carbonization parts by weight of two subcompound 0.01~10；Two subcompounds of the poly- carbonization are the compound containing construction unit shown in following formula：In formula, R represents substituted or unsubstituted alkyl, is aliphatic alkyl, alicyclic alkyl, aromatic hydrocarbyl or aromatic series fat Fat alkyl；M is the integer of 2 and the above；The specific insulation of the polyester elastomer composition improves 1~2 number than the specific insulation of the polyester elastomer Magnitude, long-term hydrolytic resistance are improved significantly, after being impregnated 90 days in 95 DEG C of hot water, its stretching strength retentivity 85% with On, elongation at break keeps more than 80%；Fluidity of molten is reduced, melt index is down to 10g/ by 20~30g/10min Below 10min, so that processing and forming is more stable.
- A kind of 2. polyester elastomer composition according to claim 1, it is characterised in that the hard chain of the polyester elastomer Section is crystalline aromatic polyester, and soft chain segment is a kind of in aliphatic polyether, aliphatic polyester and fatty poly-ester carbonate More than.
- A kind of 3. polyester elastomer composition according to claim 2, it is characterised in that the crystalline aromatic polyester For polyethylene terephthalate, polybutylene terephthalate (PBT), PEN, P-hydroxybenzoic acid copolymerization One or more of polyester, 6- hydroxyl -2- carboxyl naphthalene copolyesters；The aliphatic polyether is the polymer of cyclic ether or the condensation product of glycol；The aliphatic polyester is polylactone, fat One or more of the condensation product of the condensation product of race's binary acid and aliphatic diol, aliphatic hydroxyl alkyl carboxylic acid；The fat Adoption carbonic ester be poly dimethyl trimethylene carbonate, poly- monomethyl trimethylene carbonate, PTMC and One or more of polyhexamethylene carbonic ester.
- 4. a kind of polyester elastomer composition according to claim 3, it is characterised in that the aliphatic polyether is glycol Condensation product when, the condensation product of glycol is more than one of polyethylene glycol, polypropylene glycol or polytetramethylene glycol, wherein, gather The number-average molecular weight of ethylene glycol is 1000~4000, and the number-average molecular weight of polypropylene glycol is 1000~4000, polytetramethylene two The number-average molecular weight of alcohol is 1000~4000.
- A kind of 5. polyester elastomer composition according to claim 2, it is characterised in that in the polyester elastomer, institute The percentage by weight for stating hard segment is 25~90%.
- 6. a kind of polyester elastomer composition according to claim 1, it is characterised in that the based elastomers are second Alkene-ethyl acetate copolymer, vinyl-acrylate copolymer, ethylene-hexene co-polymers or ethylene-octene copolymer；It is described poly- Two subcompounds that are carbonized are homopolymer or the copolymer of different monomers.
- 7. a kind of polyester elastomer composition according to claim 6, it is characterised in that the ethylene-acrylate is total to Polymers is ethylene-methyl acrylate, ethylene-ethyl acrylate or ethylene-butyl acrylate.
- A kind of 8. polyester elastomer composition according to claim 1, it is characterised in that two subcompounds of the poly- carbonization For aliphatic polycarbodiimide, alicyclic polycarbodiimide or aromatic polycarbodiimide.
- 9. a kind of polyester elastomer composition according to claim 8, it is characterised in that the aliphatic poly carbonization two is sub- Amine is polyalkylene carbodiimides；The alicyclic polycarbodiimide is poly- (4,4 '-dicyclohexyl methyl hydride carbodiimides)；The aromatic polycarbodiimide is poly (arylene ether) carbodiimides or poly- diaryl alkane carbodiimides.
- A kind of 10. polyester elastomer composition according to claim 9, it is characterised in that the polyalkylene carbonization two Imines is polyhexamethylene carbodiimides or poly- (3- methyl hexa-methylenes carbodiimides).
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