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Aromatic polyetheretherketone-polyimide block polymer, and preparation method and application thereof

A polyimide block and block copolymer technology, applied in the application of polyether ether ketone and thermoplastic polyimide alloy compatibilization modification, in the field of aromatic block copolymer, can solve the problem of different molecular structures and other problems, to achieve the effect of improving mechanical properties, reducing the size of the two phases, and improving compatibility

Inactive Publication Date: 2013-01-16
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The difference between the preparation of polyether ether ketone ketone-polyethersulfone block copolymer and the present invention is mainly two aspects, on the one hand the polyether ether ketone-polyimide block copolymer synthesized by the present invention and polyether The molecular structure of ether ketone ketone-polyether sulfone block copolymer is different. On the other hand, the preparation of polyether ether ketone ketone-polyether sulfone block copolymer does not involve its research as a compatibilizer

Method used

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  • Aromatic polyetheretherketone-polyimide block polymer, and preparation method and application thereof
  • Aromatic polyetheretherketone-polyimide block polymer, and preparation method and application thereof
  • Aromatic polyetheretherketone-polyimide block polymer, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Take 100g of polyetheretherketone and 100g of thermoplastic polyimide and mix them evenly on a high-speed mixer, add them to the feeding funnel of the twin-screw extruder, then extrude and granulate with the twin-screw extruder to obtain polyether ether ketone: The blend of thermoplastic polyimide with a mass ratio of 50:50 is denoted as P / T.

[0043] The tensile strength of the blend was measured by Shimatsu AG-1 universal testing machine to be 77MPa, and the elongation at break was 9%. The 5% thermal weight loss temperature in air atmosphere was measured by NetzchSta449c thermal analyzer to be 561°C.

[0044] The thermoplastic polyimide used in the present invention is produced by Nanjing Yuezi Chemical Co., Ltd., model YZPI-JL100.

Embodiment 2

[0046] Add 13.08g (0.06mol) of 4,4'-difluorobenzophenone, 5.50g (0.05mol) of resorcinol, carbonic acid Potassium 10.35g (0.075mol) and sulfolane 55g were stirred with nitrogen gas, heated to 150°C for 3 hours to form a salt, and then heated to 240°C for 5 hours to polymerize. Afterwards, the temperature of the reaction system was lowered to 60°C, 2.75g (0.025mol) of p-hydroxyaniline was added, stirred under nitrogen gas, the temperature was raised to 150°C to form a salt for 3 hours, and then the temperature was raised to 180°C for 5 hours to obtain a polymer slime. The polymer slime was cooled to 50°C, crushed, washed with water, and filtered under reduced pressure until the filtrate was colorless and transparent. After drying, 14.86 g of refined amino-terminated polyetheretherketone oligomers were obtained. The molecular weight Mn=3,000 and PDI=1.02 were measured by PL-GPC220 high temperature gel permeation chromatography.

[0047] In a three-neck flask reactor equipped wit...

Embodiment 3

[0052] In a three-neck flask reactor equipped with a stirrer, a drying tube and a nitrogen device, add 4.34 g (0.014 mol) of 4,4'-oxydiphthalic anhydride, 4,4'-bis(4-aminobenzene Oxygen) diphenyl sulfone 3.63g (0.0084mol), N, N- dimethylacetamide 34mL, stirred under nitrogen gas, reacted at 30°C for 8 hours, and obtained acid anhydride-terminated polyimide oligomer mucus, poly The molecular weight Mn=3,000 and PDI=1.04 of the imide oligomer were measured by PL-GPC220 high temperature gel permeation chromatography. 8.73 g of the amino-terminated polyetheretherketone oligomer refined in Example 2 was added thereto, stirred with nitrogen gas, and polymerized at 40° C. for 8 hours. After that, 14 mL of acetic anhydride and 7 mL of triethylamine were added, and the ring was chemically buckled at 100° C. for 8 hours. Pulverize the obtained polymer, boil and wash with water and acetone in turn, and filter under reduced pressure until the filtrate is colorless and transparent. After ...

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Abstract

The invention relates to an aromatic block polymer, and a preparation method and application thereof as a compatibilizer. Amino-terminated polyetheretherketone oligomer and acid-anhydride-terminated polyimide oligomer are subjected to nucleophilic polycondensation reaction in an organic solvent to obtain the polyetheretherketone-polyimide block polymer. The polymerization degree of the two oligomers can be regulated to prepare the block polymer, so that the number-average molecular weight of the prepared polyetheretherketone block and polyimide block is 1000-6000, and the number-average molecular weight of the block polymer is 20000-40000. When being adding into a polyetheretherketone-thermoplastic polyimide blend system as a compatibilizer, the block polymer is beneficial to improving the compatibility of the blend system, thereby preparing the high-polymer alloy material with excellent comprehensive properties, such as mechanical properties, working properties, thermal properties and the like.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and specifically relates to an aromatic block copolymer obtained by nucleophilic polycondensation reaction of an amino-terminated polyether ether ketone oligomer and an acid anhydride-terminated polyimide oligomer, and its preparation The method and its application in compatibilization modification of polyether ether ketone and thermoplastic polyimide alloy. Background technique [0002] With the increasingly diverse needs of people, it is imminent to develop materials with excellent comprehensive properties. However, it is becoming more and more difficult to develop new materials with low price and good performance; in practical applications, polymers are often required to have good heat resistance and easy processing, which is difficult for a single polymer; research and development The cost of new polymers is high and the cycle is long. In contrast, the development of polymer alloys is...

Claims

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Application Information

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IPC IPC(8): C08G81/00C08G8/36C08G73/10C08L87/00
CPCC08L71/00C08G65/46C08G2261/126C08G2650/40C08L2205/05C08L79/08
Inventor 姜振华高聪张淑玲王贵宾
Owner JILIN UNIV
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