CN106221139B - A kind of toughening poly butylene succinate and preparation method thereof - Google Patents
A kind of toughening poly butylene succinate and preparation method thereof Download PDFInfo
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- CN106221139B CN106221139B CN201610606114.XA CN201610606114A CN106221139B CN 106221139 B CN106221139 B CN 106221139B CN 201610606114 A CN201610606114 A CN 201610606114A CN 106221139 B CN106221139 B CN 106221139B
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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
- 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
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The present invention provides a kind of toughening poly butylene succinate and preparation method thereof.The toughening poly butylene succinate is prepared by the following method: by polyester elastomer and poly butylene succinate, melt blending obtains toughening poly butylene succinate at 120-160 DEG C.Polyester elastomer of the present invention is using the biomass binary acid dihydric alcohol such as butanediol as Material synthesis.1, 4- succinic acid, 1,4-butanediol segment and the poly butylene succinate contained in the elastomer has good compatibility.Compared to common toughener such as polyethylene glycol, the high molecular weight of the polyester elastomer effectively overcomes the behavior that toughener is migrated out from matrix.Therefore, the polyester elastomer can efficiently toughening poly butylene succinate and holding toughening effect long-term stability.The poly butylene succinate elongation at break of the toughening is increased to 100%-300%, and impact strength is increased to 8.2-41.3KJ/M2。
Description
Technical field
The present invention relates to technical field of polymer materials more particularly to a kind of toughening poly butylene succinate and its preparations
Method.
Background technique
Plastic products play irreplaceable role in people's lives, and traditional plastics are mainly with fossil resources
What Material synthesis obtained, with the lasting consumption of the non-renewable resources such as petroleum, the development of plastics industry faces huge challenge.
Meanwhile whole world white pollution caused by the petroleum-based plastics largely discarded increasingly increases, it is non-renewable to petroleum etc. in order to reduce
The sustainable development of high molecular material industry is realized in the dependence of resource, finds environmental-friendly new material as people's research
Hot issue, in view of the situation, biology base high molecular material is increasingly by the highest attention of people.
Poly butylene succinate (PBS) is a kind of fatty acid polyester of function admirable, is stablized in dry environment, in mud
Can be degradable in soil, seawater and compost, therefore retention property can stablize in longer storage and validity period, and dropped after use
It is nontoxic to solve product.In addition to degradation property, PBS also have with mechanical property similar in polyethylene (PE) and polypropylene (PP), can be with
Using the device and method of processing PE and PP, processing is carried out to which various productions of different shapes be made to PBS at 160-200 DEG C
Product.In addition, synthesize the raw material succinic acid of PBS, (corn, waste whey, industrial and agricultural production waste material from a wealth of sources and cheap
Deng).The simple production process of PBS can be slightly transformed by existing polyester equipment and be produced.This polyester may be implemented to come from
Natural, back to nature green circulatory production, be it is a kind of can full ecological circulation green material.
If although poly butylene succinate has mostly many excellent properties, but itself matter is crisp, shock resistance
Difference, the lower feature of elongation at break seriously restrict it in the application of numerous areas.For the brittleness of PBS, attempts have been made
Toughener is added to improve, and the addition of some common toughener, such as terephthalic acid (TPA) dibutyl ester, polyethylene glycol, glycerol, it is right
It makes moderate progress in its toughness, but these toughener gradually can lose toughening effect to surface migration in use, from
And the polybutylene succinate material of toughening is made not have long-term stability.In addition poly butylene succinate is as a kind of
Bio-based plastics, the big distinguishing feature of one are that its production does not depend on fossil resources, but most toughener are all fossil resources at present
Product, under nowadays fossil resources overall situation in short supply, this can undoubtedly weaken poly butylene succinate as bio-based materials
Advantage.
Summary of the invention
Present invention solves the technical problem that being to provide a kind of toughening poly butylene succinate with long-term stability
Preparation method, and be prepared for the toughening poly butylene succinate with higher toughness.
The present invention provides a kind of preparation methods of toughening poly butylene succinate, by polyester elastomer and poly-succinic
Butanediol ester melt blending 7-9min under 120-160 DEG C, banbury rotating speed 60-80rpm, obtains toughening poly-succinic acid-butanediol
Ester, the polyester elastomer are biology base-binary acid divalent alcohol copolymers.With the biological poly ester elastomer come to poly-succinic
Butanediol ester toughening, obtained toughening poly butylene succinate do not depend on fossil resources, have environmentally friendly and can be again
Natural disposition improves the market competitiveness of material.Polyester elastomer can be broken for the sufficiently small particle of partial size in melt blending,
It is dispersed in poly butylene succinate matrix.Poly butylene succinate by foreign impacts or stretched when
It waits, these elastomer small particles can absorb the energy for causing matrix cracking generation and expansion, to prevent the generation of crackle
And extension, have the function that toughening.
Preferably, the temperature of the polyester elastomer and poly butylene succinate melt blending is 120-160 DEG C.If molten
Melt temperature lower than 120 DEG C, poly butylene succinate is difficult to melt, so that polyester elastomer is sheared broken be difficult to uniformly later
It is dispersed among poly butylene succinate matrix, to influence performance.If melt blending temperature is too high, system viscosity is too low,
Good blending effect is not can guarantee.
Preferably, banbury rotating speed is 60-80rpm when polyester elastomer and poly butylene succinate melt blending,
Time is 7-9min.If banbury rotating speed is lower than 7min, the polyester lower than 60rpm or melt blending time when melt blending
Elastomer is difficult to be crushed into the sufficiently small particle of partial size, it is also difficult to it is uniformly distributed in the base, during stretching, polyester bullet
Property body particle is difficult to play the role of Anticrack, therefore is unable to reach preferable toughening effect；And revolving speed is excessively high, or molten
Melt blending overlong time, polyester elastomer particle diameter tends towards stability, and will not further decrease, also, the too long meeting of mixing time
It causes polyester elastomer strand that chain rupture occurs, influences product property.
Preferably, polyester elastomer content in the toughening poly butylene succinate is 5-20wt%, more
Preferably 15-20wt%.When the content of polyester elastomer is more than 20wt%, lead to melting altogether because elastomer content is excessively high
It is crushed difficulty in mixed process, so that the rubber particles partial size formed is larger, and is distributed also relatively uneven, the toughening caused
Poly butylene succinate performance is declined.
The synthesis of polyester elastomer: the binary acid centainly matched, dihydric alcohol (alkyd total moles ratio are added in three-necked flask
100 DEG C are cooled to hereinafter, catalyst is added, in catalyst in 170-190 DEG C of progress 1-3h low temperature esterification for 1.1:1)
Under effect, polycondensation reaction is carried out under the conditions of vacuum and 210-230 DEG C, reaction time 6-8h obtains polyester elastomer.
Preferably, the temperature of low temperature esterification is 170-190 DEG C.If the temperature of low temperature esterification is too low, it is anti-that esterification is not achieved
The dehydration temperaturre that should be required can be such that reaction carries out slowly, and then influence the progress of subsequent reactions；If the temperature of esterification is too
Height, low-boiling diol monomer can be steamed largely, so that last polyester elastomer molecular weight is too low, influence toughening effect.
Preferably, the temperature of polycondensation reaction is 210-230 DEG C.If polycondensation reaction temperature is too low, reaction rate will lead to
It crosses slowly, the polyester elastomer molecular weight made is too low, it is difficult to toughening；If reaction temperature is excessively high, system may occur
Hot oxygen oxidation.
Preferably, the dihydric alcohol is 1,4-butanediol, 2,3- fourths two in the preparation process of above-mentioned polyester elastomer
Alcohol, 1,3-PD.
Preferably, in the preparation process of above-mentioned polyester elastomer, the binary acid is 1, 4- succinic acid, 1,6- oneself two
Acid.
Preferably, the catalyst is butyl titanate.
The present invention provides a kind of preparation methods of toughening poly-succinic acid-butanediol, by polyester elastomer and poly-succinic fourth
For diol ester at 120-160 DEG C, banbury rotating speed is melt blending 7-9min under the conditions of 60-80rpm, obtains toughening poly-succinic fourth
Diol ester；Polyester elastomer is binary acid divalent alcohol copolymers.Since polyester elastomer can be broken during melt blending
It is dispersed in poly butylene succinate matrix for little particle, when matrix is by foreign impacts or is stretched, these
Polyester elastomer small particles can absorb the energy for causing matrix cracking generation and expansion, to prevent the generation and expansion of crackle
Exhibition, the segment for furthermore including in polyester elastomer is but also it and poly butylene succinate have good compatibility, thus energy
Play the role of improving poly butylene succinate toughness.In addition, the molecular weight of the polyester elastomer is relative to conventional toughening
Agent molecule amount is higher, can effectively overcome the migration precipitation behavior from poly butylene succinate matrix, therefore the polyester bullet
Property body had not only been able to maintain the efficient toughening effect to poly butylene succinate, but also the poly butylene succinate of toughening is made to have length
Imitate stability.
Beneficial effects of the present invention
1. poly butylene succinate is after the polyester elastomer toughening modifying, before elongation at break reaches toughening
100%~300%, impact strength is increased to 300%~1000%.The experimental results showed that the toughness of poly butylene succinate
It is significantly improved after modifies by the polyester.
2. the polyester elastomer is dispersed in poly-succinic acid-butanediol becoming particle after melt blending shearing-crushing
In ester group body, solve the problems, such as that common toughener is deviate to surface migration, so that the increasing of the toughening poly butylene succinate
Tough effect has long-term effect.
Detailed description of the invention:
The poly butylene succinate of Fig. 1 different mixture mass ratio and the ess-strain of the polyester elastomer blend
Curve
Fig. 2 poly butylene succinate (PBS) is bent from the ess-strain of the polyester elastomer blend of different synthons
Line (poly butylene succinate is 85:15 with the mass ratio that is blended of polyester elastomer)
Specific embodiment
For a further understanding of the present invention, below with reference to embodiment to toughening poly butylene succinate provided by the invention
And preparation method thereof be described in detail, protection scope of the present invention is not limited by the following examples.
Embodiment 1
The dehydration of 1, 4- succinic acid: the 1, 4- succinic acid of certain mass is placed in vacuum drying oven, in 60 DEG C, vacuum
Under the conditions of place for 24 hours to constant weight.
The synthesis of polyester elastomer: a certain amount of 1, 4- succinic acid, 1,4-butanediol, 2,3- fourths are added in three-necked flask
Glycol, molar ratio 1:0.3:0.7, control system reaction temperature are 180 DEG C, and system is cooled to 100 DEG C after reaction 2h, is added
Enter the tetrabutyl titanate catalyst of above-mentioned reaction monomers gross mass 0.1wt%, then be warming up to 220 DEG C, reacts under vacuum conditions
8h obtains polyester elastomer.
The proportion of blend: poly butylene succinate and polyester elastomer 95:5,90:10 in mass ratio, 85:15,80:
20 carry out melt blending.
The preparation of blend: poly butylene succinate, the polyester elastomer are melted in Haake mixer
It is blended, blending temperature is 120 DEG C.Banbury rotating speed is 80rpm, and time 8min is blended.By the sample after blending directly in room temperature
It is cooling under air condition.
The preparation of test bars: by blends described above in 150 DEG C on vulcanizing press, 10Mpa depresses to the piece of 1mm thickness
Material cuts into dumbbell shape batten with cut-off knife after being cooled to room temperature, and live part is having a size of 10 × 4 × 1mm3.Batten is in CMT
Stretching experiment is carried out on 4104 type electronic tensile machines, test temperature is 24 ± 1 DEG C, rate of extension 50mm/min.Each sample
Five battens of parallel testing, final result are averaged and calculate standard deviation.
By blends described above in, at 150 DEG C, being pressed into the impact strength of standard under 10Mpa with mold on evacuated flat panel tablet press machine
Batten, specification are 80 × 10 × 4mm2, taken out after being cooled to room temperature.Determining bottom radius in the middle part of batten with milling cutter is
0.25mm notch carries out impact strength test on cantilever-type impact strength testing machine.Five samples of each sample parallel testing
Item, final result are averaged and calculate standard deviation.
Embodiment 2
The dehydration of 1,4- succinic acid: with embodiment 1.
The synthesis of polyester elastomer: a certain amount of 1, 4- succinic acid, 1,4-butanediol, 2,3- fourths are added in three-necked flask
Glycol, molar ratio 1:0.3:0.7, control system reaction temperature are 190 DEG C, and system is cooled to 100 DEG C by reaction 2h, is added
It is the tetrabutyl titanate catalyst of above-mentioned monomer gross mass 0.1wt%, then is warming up to 230 DEG C, reacts 8h under vacuum conditions, obtain
Polyester elastomer is obtained, is placed it in spare in the drying tower of sealing.
The proportion of blend: with embodiment 1.
The preparation of blend: with embodiment 1.
The preparation of test bars: with embodiment 1.
Embodiment 3
The dehydration of 1,4- succinic acid: with embodiment 1.
The synthesis of polyester elastomer: a certain amount of 1, 4- succinic acid, 1,4-butanediol, 2,3- fourths are added in three-necked flask
Glycol, molar ratio 1:0.3:0.7, control system reaction temperature are 170 DEG C, and system is cooled to 100 DEG C by reaction 2h, is added
It is the tetrabutyl titanate catalyst of above-mentioned monomer gross mass 0.1wt%, then is warming up to 210 DEG C, reacts 8h under vacuum conditions, obtain
Polyester elastomer is obtained, is placed it in spare in the drying tower of sealing.
The proportion of blend: with embodiment 1.
The preparation of blend: with embodiment 1.
The preparation of test bars: with embodiment 1.
Embodiment 4
1, the dehydration of-succinic acid: with embodiment 1.
The synthesis of polyester elastomer: with embodiment 1.
The proportion of blend: with embodiment 1.
The preparation of blend: poly butylene succinate, the polyester elastomer are melted in Haake mixer
It is blended, blending temperature is 120 DEG C.Banbury rotating speed is 60rpm, and time 7min is blended.By the sample after blending directly in room temperature
It is cooling under air condition.
The preparation of test bars: with embodiment 1.
Embodiment 5
1, the dehydration of-succinic acid: with embodiment 1.
The synthesis of polyester elastomer: with embodiment 1.
The proportion of blend: with embodiment 1.
The preparation of blend: poly butylene succinate, the polyester elastomer are melted in Haake mixer
It is blended, blending temperature is 140 DEG C.Banbury rotating speed is 70rpm, and time 8min is blended.By the sample after blending directly in room temperature
It is cooling under air condition.
The preparation of test bars: with embodiment 1.
Embodiment 6
The dehydration of 1,4- succinic acid: with embodiment 1.
The synthesis of polyester elastomer: with embodiment 1.
The proportion of blend: with embodiment 1.
The preparation of blend: poly butylene succinate, the polyester elastomer are melted in Haake mixer
It is blended, blending temperature is 160 DEG C.Banbury rotating speed is 80rpm, and time 9min is blended.By the sample after blending directly in room temperature
It is cooling under air condition.
The preparation of test bars: with embodiment 1.
Embodiment 7
The dehydration of 1,6- adipic acid: 1, the 6- adipic acid of certain mass is placed in vacuum drying oven, in 60 DEG C, vacuum
Under the conditions of place for 24 hours to constant weight.
The synthesis of polyester elastomer: the synthesis of polyester elastomer: be added in three-necked flask a certain amount of 1,6- oneself two
Acid, 1,4-butanediol, 2,3-butanediol, molar ratio 1:0.3:0.7, control system reaction temperature is 180 DEG C, after reacting 2h
System is cooled to 100 DEG C, the tetrabutyl titanate catalyst of system gross mass 0.1wt% is added, then is warming up to 220 DEG C, true
8h is reacted under empty condition, obtains polyester elastomer.
The proportion of blend: with embodiment 1.
The preparation of blend: with embodiment 1.
The preparation of test bars: with embodiment 1.
Embodiment 8
The dehydration of 1,6- adipic acid: 1, the 6- adipic acid of certain mass is placed in vacuum drying oven, in 60 DEG C, vacuum
Under the conditions of place for 24 hours to constant weight.
The synthesis of polyester elastomer: the synthesis of polyester elastomer: be added in three-necked flask a certain amount of 1,6- oneself two
Acid, 1,4-butanediol, 2,3-butanediol, molar ratio 1:0.3:0.7, control system reaction temperature is 190 DEG C, after reacting 2h
System is cooled to 100 DEG C, the tetrabutyl titanate catalyst of system gross mass 0.1wt% is added, then is warming up to 230 DEG C, true
8h is reacted under empty condition, obtains polyester elastomer.
The proportion of blend: with embodiment 1.
The preparation of blend: with embodiment 1.
The preparation of test bars: with embodiment 1.
Embodiment 9
The dehydration of 1,6- adipic acid: 1, the 6- adipic acid of certain mass is placed in vacuum drying oven, in 60 DEG C, vacuum
Under the conditions of place for 24 hours to constant weight.
The synthesis of polyester elastomer: the synthesis of polyester elastomer: be added in three-necked flask a certain amount of 1,6- oneself two
Acid, 1,4-butanediol, 2,3-butanediol, molar ratio 1:0.3:0.7, control system reaction temperature is 170 DEG C, after reacting 2h
System is cooled to 100 DEG C, the tetrabutyl titanate catalyst of system gross mass 0.1wt% is added, then is warming up to 210 DEG C, true
8h is reacted under empty condition, obtains polyester elastomer.
The proportion of blend: with embodiment 1.
The preparation of blend: with embodiment 1.
The preparation of test bars: with embodiment 1.
Embodiment 10
The dehydration of 1,6- adipic acid: 1, the 6- adipic acid of certain mass is placed in vacuum drying oven, in 60 DEG C, vacuum
Under the conditions of place for 24 hours to constant weight.
The synthesis of polyester elastomer: with embodiment 7.
The proportion of blend: with embodiment 1.
The preparation of dry-blend: poly butylene succinate, the polyester elastomer are melted in Haake mixer
It is blended, blending temperature is 120 DEG C.Banbury rotating speed is 60rpm, and time 7min is blended.By the sample after blending directly in room temperature
It is cooling under air condition.
The preparation of test bars: with embodiment 1.
Embodiment 11
The dehydration of 1,6- adipic acid: 1, the 6- adipic acid of certain mass is placed in vacuum drying oven, in 60 DEG C, vacuum
Under the conditions of place for 24 hours to constant weight.
The synthesis of polyester elastomer: with embodiment 7.
The proportion of blend: with embodiment 1.
The preparation of dry-blend: poly butylene succinate, the polyester elastomer are melted in Haake mixer
It is blended, blending temperature is 160 DEG C.Banbury rotating speed is 80rpm, and time 9min is blended.By the sample after blending directly in room temperature
It is cooling under air condition.
The preparation of test bars: with embodiment 1.
Embodiment 12
The dehydration of 1,6- adipic acid: 1, the 6- adipic acid of certain mass is placed in vacuum drying oven, in 60 DEG C, vacuum
Under the conditions of place for 24 hours to constant weight.
The synthesis of polyester elastomer: with embodiment 7.
The proportion of blend: with embodiment 1.
The preparation of dry-blend: poly butylene succinate, the polyester elastomer are melted in Haake mixer
It is blended, blending temperature is 140 DEG C.Banbury rotating speed is 70rpm, and time 8min is blended.By the sample after blending directly in room temperature
It is cooling under air condition.
The preparation of test bars: with embodiment 1.
Embodiment 13
The dehydration of 1,4- succinic acid: with embodiment 1.
The synthesis of polyester elastomer: being added a certain amount of 1, 4- succinic acid, 1,4-butanediol in three-necked flask, and 1,3- third
Glycol, molar ratio 1:0.3:0.7, control system reaction temperature are 180 DEG C, and system is cooled to 100 DEG C by reaction 2h, is added
It is the tetrabutyl titanate catalyst of above-mentioned monomer gross mass 0.1wt%, then is warming up to 220 DEG C, reacts 8h under vacuum conditions, obtain
Obtain polyester elastomer.
The proportion of blend: with embodiment 1.
The preparation of blend: with embodiment 1.
The preparation of test bars: with embodiment 1.
Embodiment 14
The dehydration of 1,4- succinic acid: with embodiment 1.
The synthesis of polyester elastomer: being added a certain amount of 1, 4- succinic acid, 1,4-butanediol in three-necked flask, and 1,3- third
Glycol, molar ratio 1:0.3:0.7, control system reaction temperature are 190 DEG C, and system is cooled to 100 DEG C by reaction 2h, is added
It is the tetrabutyl titanate catalyst of above-mentioned monomer gross mass 0.1wt%, then is warming up to 230 DEG C, reacts 8h under vacuum conditions, obtain
Obtain polyester elastomer.
The proportion of blend: with embodiment 1.
The preparation of blend: with embodiment 1.
The preparation of test bars: with embodiment 1.
Embodiment 15
The dehydration of 1,4- succinic acid: with embodiment 1.
The synthesis of polyester elastomer: being added a certain amount of 1, 4- succinic acid, 1,4-butanediol in three-necked flask, and 1,3- third
Glycol, molar ratio 1:0.3:0.7, control system reaction temperature are 170 DEG C, and system is cooled to 100 DEG C by reaction 2h, is added
It is the tetrabutyl titanate catalyst of above-mentioned monomer gross mass 0.1wt%, then is warming up to 210 DEG C, reacts 8h under vacuum conditions, obtain
Obtain polyester elastomer.
The proportion of blend: with embodiment 1.
The preparation of blend: with embodiment 1.
The preparation of test bars: with embodiment 1.
Embodiment 16
The dehydration of 1,4- succinic acid: with embodiment 1.
The synthesis of polyester elastomer: with embodiment 13.
The proportion of blend: with embodiment 1.
The preparation of dry-blend: poly butylene succinate, the polyester elastomer are melted in Haake mixer
It is blended, blending temperature is 140 DEG C.Banbury rotating speed is 70rpm, and time 8min is blended.By the sample after blending directly in room temperature
It is cooling under air condition.
The preparation of test bars: with embodiment 1.
Embodiment 17
The dehydration of 1,4- succinic acid: with embodiment 1.
The synthesis of polyester elastomer: with embodiment 13.
The proportion of blend: with embodiment 1.
The preparation of dry-blend: poly butylene succinate, the polyester elastomer are melted in Haake mixer
It is blended, blending temperature is 120 DEG C.Banbury rotating speed is 60rpm, and time 7min is blended.By the sample after blending directly in room temperature
It is cooling under air condition.
The preparation of test bars: with embodiment 1.
Embodiment 18
The dehydration of 1,4- succinic acid: with embodiment 1.
The synthesis of polyester elastomer: with embodiment 13.
The proportion of blend: with embodiment 1.
The preparation of dry-blend: poly butylene succinate, the polyester elastomer are melted in Haake mixer
It is blended, blending temperature is 160 DEG C.Banbury rotating speed is 80rpm, and time 9min is blended.By the sample after blending directly in room temperature
It is cooling under air condition.
The preparation of test bars: with embodiment 1.
The polyester body blend that the poly butylene succinate of 1. different mixture ratio of table is obtained from different synthons
Elongation at break and impact strength data.
Claims (2)
1. a kind of preparation method of toughening poly butylene succinate, it is characterised in that: by polyester elastomer and poly-succinic fourth
For diol ester at 120-160 DEG C, banbury rotating speed is melt blending 7-9min under the conditions of 60-80rpm, obtains toughening poly-succinic fourth
Diol ester, polyester elastomer used are binary acid-divalent alcohol copolymers；
Content of the polyester elastomer in the toughening poly butylene succinate is 5-20wt%；
The preparation method of polyester elastomer specifically:
By 1, 4- succinic acid, 1,4-butanediol, 2,3-butanediol is 1:0.3:0.7 mixing according to molar ratio, at 170-190 DEG C
Esterification 1-3h is carried out, is cooled to 100 DEG C hereinafter, it is 1, 4- succinic acid, 1,4-butanediol that quality, which is added, 2,3-butanediol is total
The catalyst of quality 0.05-0.2wt% carries out polycondensation reaction under the action of catalyst under the conditions of vacuum and 210-230 DEG C,
Reaction time is 6-8h, obtains polyester elastomer.
2. preparation method according to claim 1, which is characterized in that the catalyst is butyl titanate.
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