CN107417918A - Cross-linking PBO copolymers and its production and use - Google Patents

Cross-linking PBO copolymers and its production and use Download PDF

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CN107417918A
CN107417918A CN201710431563.XA CN201710431563A CN107417918A CN 107417918 A CN107417918 A CN 107417918A CN 201710431563 A CN201710431563 A CN 201710431563A CN 107417918 A CN107417918 A CN 107417918A
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linking
cross
formula
acid
pbo
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CN107417918B (en
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郭凯
史冬丽
郑世军
魏爱卿
李自法
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White Dove Abrasives Co ltd
Zhengzhou University
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White Dove Abrasives Co ltd
Zhengzhou University
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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
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/22—Polybenzoxazoles
    • 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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
    • C08J3/247—Heating methods
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • C08L63/10—Epoxy resins modified by unsaturated compounds
    • 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
    • C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
    • C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation

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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

Abstract

The invention discloses cross-linking PBO copolymers and its production and use, belong to polymeric material field.It is related to formula（1）Shown cross-linking PBO copolymers, by the diamino resorcin dihydrochloride of 2 methyl 4,6 and aliphatic dicarboxylic acid and terephthalic acid (TPA) prepared by the copolymerization in polyphosphoric acid for it, m=1 in formula, and 2,3,4,5,6,7,8,9,10.The melting point polymer is less than heat decomposition temperature, can be used as photoelectric functional material and mold pressing resin, is easy to thermoplastic shaping, cross-linked structure is formed after heat treatment, further increases the heat resistance, solvent resistance and mechanical property of product.。

Description

Cross-linking PBO copolymers and its production and use
Technical field
The present invention relates to cross-linking PBO copolymers and its production and use, belong to polymeric material field.
Background technology
The macromolecule of the structure containing Benzo-dioxazole has significant chromophore effect, can produce strong fluorescence phenomenon, be used for Photochromic, photovoltaic cell, Organic Light Emitting Diode and DNA fluoroscopic examinations.Full armaticity Benzo-dioxazole compound of birdsing of the same feather flock together has The excellent properties such as high intensity, high-modulus and high temperature resistant.But armaticity Benzo-dioxazole is birdsed of the same feather flock together, and compound fusing point is too high (to be higher than and decomposes temperature Degree) and insoluble in organic solvent, bring the difficulty of processing and forming.
Soft segment is introduced in the molecular backbone that Benzo-dioxazole birdss of the same feather flock together compound or introduces side base can reduce fusing point and improve it Dissolubility.Macromolecules 2004,37, page 3815 describes 4,6-diaminoresorcinol dihydrochloride, to benzene two Formic acid and the decanedioic acid copolymerization in polyphosphoric acid medium, PBO copolymer of the main chain containing 8 methylene is synthesized, as indigo plant Luminescent material uses, but the copolymer does not dissolve in common organic solvent, limits its application.CN2017100353026 is described 2- methyl -4,6-diaminoresorcinol dihydrochloride and different aliphatic dicarboxylic acids react in polyphosphoric acid medium, close Into a series of cross-linking poly- alkylene Benzo-dioxazole homopolymer, used as moulding resin.Low melting point is handed at present Connection PBO copolymers are not shown in relevant report.
The content of the invention
It is an object of the invention to provide a kind of cross-linking PBO copolymers of low melting point.
It is a further object to provide the preparation method of the cross-linking PBO copolymers.
The cross-linking PBO copolymers of the present invention, its structure are as follows：
M=1,2,3,4,5,6,7,8,9,10 in formula；X/y=1/99~7/3
The synthetic method of the cross-linking PBO copolymers of the present invention passes through 2- methyl -4,6- diaminourea isophthalic two shown in formula (3) Aliphatic dicarboxylic acid and terephthalic acid (TPA) the copolymerization preparation in polyphosphoric acid shown in phenol dihydrochloride, formula (4).
The mol ratio of 2- methyl -4,6-diaminoresorcinol dihydrochloride and aliphatic dicarboxylic acid is 0.8-1.2：1, It is preferred that 0.95-1.05：1.
HOOC(CH2)mCOOH (4)
M=1,2,3,4,5,6,7,8,9,10 in formula.
Reaction temperature is using progressively temperature-raising method, and room temperature is to 200 DEG C.
Specific method：Under nitrogen protection, at a temperature of 30 DEG C~130 DEG C, 2- methyl -4,6-diaminoresorcinol disalt Hydrochlorate first removes hydrogen chloride in polyphosphoric acid, preferably 60 DEG C~90 DEG C.Then terephthalic acid (TPA) and aliphatic dicarboxylic acid are added, Reaction temperature is progressively warming up to 200 DEG C of progress copolymerizations.It is preferred that first then reacted in 120 DEG C of reactions at 150 DEG C, finally In 195 DEG C of reactions.
Polymeric reaction solution concentration is 3wt%~30wt%, preferably 8wt%~15wt%.
Terephthalic acid (TPA) and aliphatic dicarboxylic acid mol ratio are 1：99 to 7：3.
Cross-linking PBO copolymers prepared by the above method are thermally treated, form the cross-linked polymer shown in formula (2), at heat It is 200 DEG C~400 DEG C to manage temperature.
Advantage of the present invention：The cross-linking PBO copolymers are dissolved in some and common are solvent (such as 1-METHYLPYRROLIDONE, two Methyl sulfoxide and formic acid etc.), can use solwution method film forming, and (140 DEG C~250 DEG C) of fusing point less than heat decomposition temperature (400 DEG C~ 500 DEG C), it is easy to thermoplastic shaping.Cross-linked structure can be formed after PBO copolymers heat treatment, further increases the heat-resisting of product Property, solvent resistance and mechanical property.
Brief description of the drawings
Fig. 1 is the cross-linking PBO copolymers (terephthalic acid (TPA) of the present invention：Adipic acid mol ratio=2：8) FTIR spectrograms.
Fig. 2 is the cross-linking PBO copolymers (terephthalic acid (TPA) of the present invention：Decanedioic acid mol ratio=3：7) FTIR spectrograms.
Fig. 3 is the cross-linking PBO copolymers (terephthalic acid (TPA) of the present invention：Adipic acid mol ratio=2：8)1HNMR spectrograms.
Fig. 4 is the cross-linking PBO copolymers (terephthalic acid (TPA) of the present invention：Decanedioic acid mol ratio=3：7)1HNMR spectrograms
Fig. 5 is the cross-linking PBO copolymers (terephthalic acid (TPA) of the present invention：Adipic acid mol ratio=2：8) DSC spectrograms.
Fig. 6 is the cross-linking PBO copolymers (terephthalic acid (TPA) of the present invention：Decanedioic acid mol ratio=3：7) DSC spectrograms.
Fig. 7 is the cross-linking PBO copolymers (terephthalic acid (TPA) of the present invention：Adipic acid mol ratio=2：8) TG spectrograms.
Fig. 8 is the cross-linking PBO copolymers (terephthalic acid (TPA) of the present invention：Decanedioic acid mol ratio=3：7) TG spectrograms.
Embodiment
Several embodiments are given below to be described in further details the preparation method of the cross-linking PBO copolymers of the present invention.
Embodiment 1：Cross-linking PBO copolymers (terephthalic acid (TPA)：Adipic acid mol ratio=2：8) synthesis
Into 250ml there-necked flasks, nitrogen protection under, first add 67.40g polyphosphoric acids, be stirred at room temperature lower addition 3.66g 2- methyl- 4,6-diaminoresorcinol dihydrochloride, is warming up to 60 DEG C, stirring removing 12 hours of hydrogen chloride, then add 1.88g oneself Diacid and 0.54g terephthalic acid (TPA)s, 6 hours first are reacted at 120 DEG C, then 3 hours are reacted at 150 DEG C, finally at 195 DEG C 3 hours are reacted, after reaction solution is cooled to 60 DEG C, are poured under stirring in 300ml water, filters, is washed with water to neutrality, 60 DEG C true Sky is dried to obtain 3.69g faint yellow solids, yield 94.2%.It is sub- that resulting polymers dissolve in 1-METHYLPYRROLIDONE, dimethyl Sulfone, m-cresol, formic acid, acetic acid, the concentrated sulfuric acid and methanesulfonic acid.
The cross-linking PBO copolymers (terephthalic acid (TPA) of above-mentioned synthesis：Adipic acid mol ratio=2：8) through IR and1HNMR is examined Survey, be target product, IR with1HNMR analysis results are as follows：
IR (KBr, cm-1)：2929,2853,1726,1627,1586,1403,1367,1152,1080；1H NMR(CF3COOD, 400MHz, δ (ppm))：8.79-8.47 (m, 0.8H), 8.46-8.26 (m, 1H), 3.61 (m, 3.2H), 2.94 (m, 3H), 2.40 (m, 3.2H).
The cross-linking PBO copolymers (terephthalic acid (TPA) of above-mentioned synthesis：Adipic acid mol ratio=2：8) on DSC spectrograms, melt Melt peak temperature as 186.6 DEG C, cross-linking reaction endotherm peak temperature is 256.6 DEG C.
The cross-linking PBO copolymers (terephthalic acid (TPA) of above-mentioned synthesis：Adipic acid mol ratio=2：8) on TG spectrograms, rise Beginning heat decomposition temperature is 439.8 DEG C.
The cross-linking PBO copolymers (terephthalic acid (TPA) of above-mentioned synthesis：Adipic acid mol ratio=2：8) under air atmosphere, After 250 DEG C are handled 30 minutes, a 1-METHYLPYRROLIDONE, dimethyl sulfoxide (DMSO), cresols, formic acid, acetic acid, the concentrated sulfuric acid are no longer dissolve in In methanesulfonic acid.
Embodiment 2：Cross-linking PBO copolymers (terephthalic acid (TPA)：Decanedioic acid mol ratio=3：7) synthesis
Into 250ml there-necked flasks, nitrogen protection under, first add 67.40g polyphosphoric acids, be stirred at room temperature lower addition 3.66g 2- methyl- 4,6-diaminoresorcinol dihydrochloride, 90 DEG C are warming up to, stirring removing 12 hours of hydrogen chloride, then adds the 2.28g last of the ten Heavenly stems Diacid and 0.80g terephthalic acid (TPA)s, 6 hours first are reacted at 120 DEG C, then 3 hours are reacted at 150 DEG C, finally at 195 DEG C 3 hours are reacted, after reaction solution is cooled to 60 DEG C, are poured under stirring in 300ml water, filters, is washed with water to neutrality, 60 DEG C true Sky is dried to obtain 4.29g faint yellow solids, yield 97.5%.It is sub- that resulting polymers dissolve in 1-METHYLPYRROLIDONE, dimethyl Sulfone, m-cresol, formic acid, acetic acid, the concentrated sulfuric acid and methanesulfonic acid.
The cross-linking PBO copolymers (terephthalic acid (TPA) of above-mentioned synthesis：Decanedioic acid mol ratio=3：7) through IR and1HNMR is examined Survey, be target product, IR with1HNMR analysis results are as follows：
IR (KBr, cm-1)：2929,2853,1726,1627,1586,1403,1367,1152,1080；1H NMR(CF3COOD, 400MHz, δ (ppm))：8.79-8.47 (m, 1.2H), 8.47-8.31 (m, 1H), 3.51 (m, 2.8H), 2.97 (m, 3H), 2.17 (m, 2.8H), 1.65-1.54 (m, 5.6H).
The cross-linking PBO copolymers (terephthalic acid (TPA) of above-mentioned synthesis：Decanedioic acid mol ratio=3：7) on DSC spectrograms, melt Melt peak temperature as 177.7 DEG C, cross-linking reaction endotherm peak temperature is 303.0 DEG C.
The cross-linking PBO copolymers (terephthalic acid (TPA) of above-mentioned synthesis：Decanedioic acid mol ratio=3：7) on TG spectrograms, rise Beginning heat decomposition temperature is 454.3 DEG C.
The cross-linking PBO copolymers (terephthalic acid (TPA) of above-mentioned synthesis：Decanedioic acid mol ratio=3：7) under air atmosphere, After 250 DEG C are handled 30 minutes, 1-METHYLPYRROLIDONE, dimethyl sulfoxide (DMSO), m-cresol, formic acid, acetic acid, the concentrated sulfuric acid are no longer dissolve in In methanesulfonic acid.
Cross-linking PBO copolymers can use as moulding resin, and its purposes is exemplified below
In PSX maleimide-epoxy phenolics base diamond grinding wheel, maleimide-epoxy phenolics is added The cross-linking PBO copolymers (terephthalic acid (TPA) of the invention of quality 10%：Decanedioic acid mol ratio=3：7), in identical mould pressing process Under the conditions of, the performance of obtained skive is listed in table 1
Table 1
Data be can be seen that from table, and after adding cross-linking PBO copolymers, rupture strength is improved more than 40%, and toughness improves, to gold The hold enhancing of hard rock, the wedge angle retentivity of emery wheel are improved, and emery wheel is often repaired once, and the fluting manganese steel saw blade number of teeth is relatively not added with Emery wheel is improved more than 2 times.

Claims (7)

1. cross-linking PBO copolymers, it is characterised in that shown in its structure such as formula (1)：
M=1,2,3,4,5,6,7,8,9,10 in formula；X/y=1/99~7/3.
2. cross-linking PBO copolymers, it is characterised in that shown in its structure such as formula (2)：
M=1,2,3,4,5,6,7,8,9,10 in formula；X/y=1/99~7/3.
3. the method for synthesis cross-linking PBO copolymers as claimed in claim 1, it is characterised in that realize by the following method：
(1) under nitrogen protection, at a temperature of 30 DEG C~130 DEG C, 2- methyl -4,6-diaminoresorcinol two shown in formula (3) Hydrochloride first removes hydrogen chloride in polyphosphoric acid；(2) terephthalic acid (TPA) and the binary aliphatic carboxylic shown in formula (4) are added and then Acid, reaction temperature are progressively warming up to 200 DEG C of progress copolymerizations；
HOOC(CH2)mCOOH (4)
M=1,2,3,4,5,6,7,8,9,10 in formula.
4. the synthetic method of cross-linking PBO copolymers as claimed in claim 3, it is characterised in that terephthalic acid (TPA) and fat Race's dicarboxylic acids mol ratio is 1：99 to 7：3；2- methyl -4,6-diaminoresorcinol dihydrochloride and aliphatic dicarboxylic acid Mol ratio be 0.8-1.2：1.
5. as claimed in claim 3 can cross-linking PBO copolymers synthetic method, it is characterised in that step (1) reaction temperature Select 60 DEG C~90 DEG C；Step (2) progressively heats up first in 120 DEG C of reactions, then in 150 DEG C of reactions, is finally reacted at 195 DEG C.
6. the synthetic method of synthesis cross-linking PBO copolymers as claimed in claim 2, it is characterised in that formula (1) is cross-linking The thermally treated acquisition formula (2) of PBO copolymers,
M=1,2,3,4,5,6,7,8,9,10 in formula；X/y=1/99~7/3.
7. the synthetic method of cross-linking PBO copolymers as claimed in claim 6, it is characterised in that heat treatment temperature is 200 DEG C ~400 DEG C.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114380999A (en) * 2021-12-16 2022-04-22 山东非金属材料研究所 Easily-molded p-phenylene benzodioxazole copolymer and preparation method thereof
CN114854015A (en) * 2021-02-04 2022-08-05 中国科学院化学研究所 Poly (p-phenylene-benzodiazole) polymer and preparation method thereof
CN114855299A (en) * 2021-02-04 2022-08-05 中国科学院化学研究所 Poly (p-phenylene-benzodiazole) polymer fiber and preparation method and application thereof

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CN105504270A (en) * 2016-01-14 2016-04-20 郑州大学 Preparation method of crosslinking poly(p-phenylenebenzobisoxazole) film

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CN105504270A (en) * 2016-01-14 2016-04-20 郑州大学 Preparation method of crosslinking poly(p-phenylenebenzobisoxazole) film

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J. PERSTON等: ""Thermoplastic Polyheterocycles. I: Polyalkylene-Benzoxazoles"", 《POLYMER ENGINEERING AND SCIENCE》 *
SHANFENG WANG: ""Supramolecular Regulation of Photophysical Properties and Electron Paramagnetic Resonace Studies of Novel Rod-Coil Ordered Copolymers Based on Poly(p-phenylene benzobisoxazole)"", 《MACROMOLECULES》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114854015A (en) * 2021-02-04 2022-08-05 中国科学院化学研究所 Poly (p-phenylene-benzodiazole) polymer and preparation method thereof
CN114855299A (en) * 2021-02-04 2022-08-05 中国科学院化学研究所 Poly (p-phenylene-benzodiazole) polymer fiber and preparation method and application thereof
CN114380999A (en) * 2021-12-16 2022-04-22 山东非金属材料研究所 Easily-molded p-phenylene benzodioxazole copolymer and preparation method thereof

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