CN114921046A - High-barrier polyester film and preparation method thereof - Google Patents
High-barrier polyester film and preparation method thereof Download PDFInfo
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- CN114921046A CN114921046A CN202210536294.4A CN202210536294A CN114921046A CN 114921046 A CN114921046 A CN 114921046A CN 202210536294 A CN202210536294 A CN 202210536294A CN 114921046 A CN114921046 A CN 114921046A
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- 229920006267 polyester film Polymers 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 230000004888 barrier function Effects 0.000 claims abstract description 23
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 22
- 229920000642 polymer Polymers 0.000 claims description 21
- MGNZXYYWBUKAII-UHFFFAOYSA-N cyclohexa-1,3-diene Chemical compound C1CC=CC=C1 MGNZXYYWBUKAII-UHFFFAOYSA-N 0.000 claims description 12
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 claims description 11
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 11
- 238000006116 polymerization reaction Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 230000000379 polymerizing effect Effects 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 8
- -1 cyclic diene Chemical class 0.000 claims description 8
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 claims description 8
- 239000003999 initiator Substances 0.000 claims description 8
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 8
- 239000002904 solvent Substances 0.000 claims description 7
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 6
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 6
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 6
- 238000012662 bulk polymerization Methods 0.000 claims description 6
- 238000010528 free radical solution polymerization reaction Methods 0.000 claims description 6
- ORTVZLZNOYNASJ-UPHRSURJSA-N (z)-but-2-ene-1,4-diol Chemical compound OC\C=C/CO ORTVZLZNOYNASJ-UPHRSURJSA-N 0.000 claims description 4
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 claims description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 3
- QNODIIQQMGDSEF-UHFFFAOYSA-N (1-hydroxycyclohexyl)-phenylmethanone Chemical compound C=1C=CC=CC=1C(=O)C1(O)CCCCC1 QNODIIQQMGDSEF-UHFFFAOYSA-N 0.000 claims description 2
- ZPOLOEWJWXZUSP-WAYWQWQTSA-N bis(prop-2-enyl) (z)-but-2-enedioate Chemical compound C=CCOC(=O)\C=C/C(=O)OCC=C ZPOLOEWJWXZUSP-WAYWQWQTSA-N 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 238000006467 substitution reaction Methods 0.000 claims description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 10
- 239000001301 oxygen Substances 0.000 abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 229920000139 polyethylene terephthalate Polymers 0.000 description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 8
- 229920002799 BoPET Polymers 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 4
- 238000013329 compounding Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 150000001991 dicarboxylic acids Chemical class 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000010526 radical polymerization reaction Methods 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 238000003828 vacuum filtration Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- ARYZCSRUUPFYMY-UHFFFAOYSA-N methoxysilane Chemical compound CO[SiH3] ARYZCSRUUPFYMY-UHFFFAOYSA-N 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
Classifications
-
- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/01—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to unsaturated polyesters
-
- 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
- C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2351/08—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
The invention relates to the field of film preparation, and particularly discloses a high-barrier polyester film and a preparation method thereof. Compared with the traditional PET polyester film, the high-barrier polyester film has better barrier property and good barrier effect on oxygen and water vapor.
Description
Technical Field
The invention relates to the field of film preparation, in particular to a high-barrier polyester film and a preparation method thereof.
Background
With the progress of society and the improvement of living standard, the requirements of people on food safety and sanitation are also improved to a new height, and the pure edible requirement is changed into the pursuit of food freshness, taste and quality. The PET film is limited by the structure thereof, and the development and the application of the PET film in the high-end important fields of military and civilian such as food and medicine are subjected to bottlenecks. Therefore, the barrier property, especially the oxygen barrier property, of the PET is improved, and the PET has a vital function and profound significance for the application of the PET in the field of packaging materials.
According to "Dolli. research, modification and application progress of PET [ J ]. Shandong chemical engineering 2021,50(8): 71-72", it is known that methods for improving barrier properties of polyester films in the prior art include surface treatment, laminar blending, nano material blending, multilayer compounding and the like. For example, CN202010210399.1 in China discloses a PET film with excellent gas barrier property and a preparation process thereof, the invention takes epoxy organosilane and methoxysilane as resin matrixes, and takes an active diluent, a cross-linking agent, a photoinitiator, a coinitiator, an adhesion regulator, a thermal curing agent and a nano polymer filler as raw materials to prepare a film with good gas and moisture barrier properties, and then the PET film is modified by utilizing a surface coating modification method, so that the barrier property of the PET film is further improved. The invention CN202110849954.X in China is a polyester film with high barrier property obtained by adopting a multilayer compounding method.
However, the existing high-barrier polyester film has the defects of numerous required raw materials and high preparation cost, or surface treatment, layered blending, nano material blending or multi-layer compounding is required, the preparation method is complicated, and no high-barrier polyester film which has good barrier property without further treatment is available.
Therefore, there is a need for a high barrier polyester film with simple preparation method, low preparation cost and good barrier property.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-barrier polyester film so as to at least achieve the effect that the barrier property is superior to that of the traditional PET film.
The purpose of the invention is realized by the following technical scheme:
a high-barrier polyester film is prepared from the prepolymer prepared from dicarboxylic acid and butenediol through polymerizing with cyclic diene.
Further, the dicarboxylic acids include: the dicarboxylic acids include: phthalic acid and its substitution products; the phthalic acid comprises one or more of phthalic acid, isophthalic acid, and terephthalic acid.
Further, the cyclic diene comprises one or more of cyclohexadiene, cyclopentadiene, divinylbenzene, diallyl maleate and butadiene.
Further, the molar ratio of the dicarboxylic acid to the butylene glycol is 4: 1 to 8; the mass ratio of the prepolymer to the cyclic diene is 15-19: 1-5.
Furthermore, the molecular weight of the prepolymer is 800-3600 g/mol.
It should be noted that if the molecular weight of the prepolymer is too low, the hard segment and the crosslinking point of the polymer formed subsequently are too many, the coating is too brittle, and the adverse effect is easily caused, so that the barrier property is damaged, and the molecular weight is too high, and the segments are easily entangled, so that the viscosity of the system is too high, which is not favorable for practical operation.
Another object of the present invention is to provide a method for preparing the high-barrier polyester film, comprising the steps of:
step one, polymerizing the dicarboxylic acid and the butenediol to form the prepolymer;
polymerizing the prepolymer and the cyclic diene to obtain a high-barrier polymer;
and step three, extruding and granulating the high-barrier polymer, melting the high-barrier polymer, and then stretching the high-barrier polymer to form a film.
Further, in the second step, the polymerization method is solution polymerization, photo-initiated polymerization or bulk polymerization.
Further, the solvent adopted by the solution polymerization comprises one or more of toluene, tetrahydrofuran, ethyl acetate and butanone; the initiator adopted by the solution polymerization comprises one or more of isophenylene hydroperoxide and benzoyl peroxide.
Further, the photoinitiator used for the photo-initiated polymerization includes photoinitiator 184 and/or photoinitiator TPO.
Further, the initiator used for the bulk polymerization comprises azobisisobutyronitrile and/or benzoyl peroxide.
It should be noted that PET is a high molecular polymer with linear structure, and from the viewpoint of molecular structure, it is the alternate existence of rigid chain segment and flexible chain segment, and although the existence of benzene ring has a certain restriction effect on the rotation of the chain segment, the C-O-C bond and CH in the structural unit 2 -CH 2 The limited effect of partial chain segments is small, the rotation is easy to occur, and the barrier of the small molecules of the permeate is not facilitated. The invention is through the ring shapeThe diene enables different polyester molecule chain segments to be interacted to form a large network structure, reduces the chain rotation and displacement of the flexible chain segment, and further inhibits the activity of the molecule chain segment. Meanwhile, the free volume of the molecular chain segment is smaller, and the barrier property of the polyester is effectively improved.
The invention has the beneficial effects that:
1. the preparation method of the high-barrier polyester film is simple, the raw materials are easy to obtain, the cost is low, and the preparation method is suitable for large-scale production.
2. Compared with the traditional PET polyester film, the high-barrier polyester film has better barrier property and good barrier effect on oxygen and water vapor.
Detailed Description
The technical solutions of the present invention are described in further detail below, but the scope of the present invention is not limited to the following.
Example 1
Step one, carrying out prepolymerization on 10 parts by mass of terephthalic acid and 20 parts by mass of butylene glycol to obtain a prepolymer;
and step two, carrying out free radical polymerization on the prepolymer obtained in the step one and 10 parts by mass of cyclohexadiene by using N-methyl pyrrolidone and iso-phenylpropyl hydrogen peroxide as initiators in a solvent polymerization manner to obtain a polymer.
And step three, carrying out vacuum filtration on the polymer obtained in the step two, removing the solvent, carrying out extrusion granulation on the obtained solid, and stretching the obtained particles to form a film.
Example 2
Step one, pre-polymerizing 20 parts by mass of isophthalic acid and 20 parts by mass of butylene glycol to obtain a prepolymer;
and step two, taking azobisisobutyronitrile as an initiator, and carrying out bulk polymerization on the prepolymer obtained in the step one and 10 parts by mass of cyclopentadiene to obtain a solid polymer.
And step three, extruding and granulating the solid obtained in the step two, and stretching the obtained particles to form a film.
Example 3
Step one, pre-polymerizing 20 parts by mass of phthalic acid and 10 parts by mass of butylene glycol to obtain a prepolymer;
and step two, taking 184 as a photoinitiator, and carrying out photoinitiated polymerization on the prepolymer obtained in the step one and 5 parts by mass of cyclohexadiene to obtain a polymer.
And step three, extruding and granulating the polymer obtained in the step two, and stretching the obtained particles to form a film.
Example 4
Step one, carrying out prepolymerization on 30 parts by mass of terephthalic acid and 10 parts by mass of butylene glycol to obtain a prepolymer;
and step two, using toluene as a solvent and benzoyl peroxide as an initiator, and carrying out free radical polymerization on the prepolymer obtained in the step one and 5 parts by mass of cyclohexadiene in a solvent polymerization manner to obtain a polymer.
And step three, carrying out vacuum filtration on the polymer obtained in the step two, removing the solvent, carrying out extrusion granulation on the obtained solid, and stretching the obtained particles to form a film.
Example 5
Step one, pre-polymerizing 40 parts by mass of isophthalic acid and 10 parts by mass of butylene glycol to obtain a prepolymer;
and step two, taking benzoyl peroxide as an initiator, and carrying out bulk polymerization on the prepolymer obtained in the step one and 5 parts by mass of cyclopentadiene to obtain a solid polymer.
And step three, extruding and granulating the solid obtained in the step two, and stretching the obtained particles to form a film.
Example 6
Step one, pre-polymerizing 40 parts by mass of phthalic acid and 10 parts by mass of butylene glycol to obtain a pre-polymer;
and step two, taking 184 as a photoinitiator, and carrying out photoinitiated polymerization on the prepolymer obtained in the step one and 2.5 parts by mass of cyclohexadiene to obtain a polymer.
And step three, extruding and granulating the polymer obtained in the step two. The resulting particles were stretched to form a film.
Comparative example 1: a conventional PET polyester film (brand manufacturer: DuPont, Foshan, model: 100 HN-A4).
Comparative example 2: a high-resistance polyester film was prepared in the same manner as in example 1, except that: butylene glycol was replaced with ethylene glycol.
Comparative example 3: a high-resistance polyester film was prepared in the same manner as in example 1, except that: the phthalic acid was replaced with malonic acid.
Examples of the experiments
The oxygen and water vapor barrier properties were tested for examples 1-6 and comparative examples. The oxygen transmission was tested via the plant using the national standard GBT1038-2000 and the water vapor transmission was tested via the plant using the national standard GBT 1037-1998. Oxygen transmission in cm 3 /m 2 24 h.0.1 MPa, water vapor transmission in g/m 2 24h, the lower the test value, the stronger the oxygen barrier capacity, and the experimental results are shown in Table 1.
TABLE 1
Therefore, the oxygen transmission rate of the high-barrier polyester film prepared by the method is 1/3-1/6 of that of the traditional PET polyester film, and the water vapor transmission rate is about 1/2 of that of the traditional PET polyester film, namely compared with the traditional PET polyester film, the oxygen transmission rate of the high-barrier polyester film is at least improved by 2 times, and the water vapor transmission rate of the high-barrier polyester film is improved by 1 time. In addition, after the butylene glycol is replaced by the ethylene glycol, the barrier property to oxygen and moisture is obviously reduced, which is probably because the symmetric hydrogen activity of the ethylene glycol is insufficient and a free radical can hardly be formed, and the double bond between two carbon atoms of the butylene glycol is an initiation point of a subsequent free radical, which is beneficial to a subsequent polymerization reaction. After the phthalic acid is replaced by the malonic acid, the blocking effect is reduced in response, which is probably because the phthalic acid contains benzene rings, and the benzene rings have a certain limiting effect on the rotation of the chain segments connected with the benzene rings, so that the activity of the chain segments can be inhibited, the permeation of small molecules is reduced, and the blocking performance is improved.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A high-barrier polyester film characterized by: the rubber is prepared by forming a prepolymer by dicarboxylic acid and butylene glycol and then polymerizing the prepolymer and cyclic diene.
2. The high barrier polyester film according to claim 1, wherein the dicarboxylic acid comprises: phthalic acid and its substitution products; the phthalic acid comprises one or more of phthalic acid, isophthalic acid, and terephthalic acid.
3. The high-barrier polyester film according to claim 1, wherein: the cyclic diene comprises one or more of cyclohexadiene, cyclopentadiene, divinylbenzene, diallyl maleate and butadiene.
4. The high-barrier polyester film according to claim 1, wherein: the mass ratio of the dicarboxylic acid to the butenediol is 4: 1-8; the mass ratio of the prepolymer to the cyclic diene is 15-19: 1-5.
5. The high-barrier polyester film according to claim 1, wherein: the molecular weight of the prepolymer is 800-3600 g/mol.
6. The method for preparing a high barrier polyester film according to any one of claims 1 to 5, comprising the steps of:
step one, polymerizing the dicarboxylic acid and the butenediol to form the prepolymer;
polymerizing the prepolymer and the cyclic diene to obtain a high-barrier polymer;
and step three, extruding and granulating the high-barrier polymer, melting the high-barrier polymer, and then stretching the high-barrier polymer to form a film.
7. The method of claim 6, wherein: in the second step, the polymerization method is solution polymerization, photoinitiated polymerization or bulk polymerization.
8. The method of claim 7, wherein: the solvent adopted by the solution polymerization comprises one or more of toluene, tetrahydrofuran, ethyl acetate and butanone; the initiator adopted by the solution polymerization comprises one or more of isophenylene hydroperoxide and benzoyl peroxide.
9. The method of claim 7, wherein: the photoinitiator used for the photoinitiated polymerization includes photoinitiator 184 and/or photoinitiator TPO.
10. The method for producing according to claim 7, characterized in that: the initiator adopted by the bulk polymerization comprises azobisisobutyronitrile and/or benzoyl peroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210536294.4A CN114921046A (en) | 2022-05-17 | 2022-05-17 | High-barrier polyester film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210536294.4A CN114921046A (en) | 2022-05-17 | 2022-05-17 | High-barrier polyester film and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114921046A true CN114921046A (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210536294.4A Pending CN114921046A (en) | 2022-05-17 | 2022-05-17 | High-barrier polyester film and preparation method thereof |
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| CN (1) | CN114921046A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001009998A (en) * | 1999-06-25 | 2001-01-16 | Teijin Ltd | Gas barrier polyester film |
| US20080161465A1 (en) * | 2006-12-28 | 2008-07-03 | Jason Christopher Jenkins | Oxygen-scavenging polyester compositions useful for packaging |
| CN113045873A (en) * | 2021-03-17 | 2021-06-29 | 宜兴博雅新材料科技有限公司 | Graphene oxide high-barrier composite film and preparation method thereof |
-
2022
- 2022-05-17 CN CN202210536294.4A patent/CN114921046A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001009998A (en) * | 1999-06-25 | 2001-01-16 | Teijin Ltd | Gas barrier polyester film |
| US20080161465A1 (en) * | 2006-12-28 | 2008-07-03 | Jason Christopher Jenkins | Oxygen-scavenging polyester compositions useful for packaging |
| CN113045873A (en) * | 2021-03-17 | 2021-06-29 | 宜兴博雅新材料科技有限公司 | Graphene oxide high-barrier composite film and preparation method thereof |
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