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Phenolphthalein polyaryletherketone and preparation method thereof

A technology of phenolphthalein polyaryletherketone and degree of polymerization, which is applied in the field of phenolphthalein polyaryletherketone and its preparation, can solve the problems of small application range of phenolphthalein polyaryletherketone, inability to regulate epoxy groups according to application requirements, etc. Application-wide effects

Inactive Publication Date: 2012-07-18
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The molecular weight of the phenolphthalein polyaryletherketone containing epoxy end group prepared by the above preparation method is 1000-8000, can be dissolved in common organic solvents, and the glass transition temperature (Tg) after curing is 183 ° C ~ 215 ° C, has a relatively Good processability and application performance, but the epoxy group of the obtained phenolphthalein polyaryletherketone is the end group of the molecular chain end, the number is fixed, and the quantity of the epoxy group cannot be adjusted according to the application requirements, so that the obtained phenolphthalein polyaryletherketone The scope of application is small

Method used

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  • Phenolphthalein polyaryletherketone and preparation method thereof
  • Phenolphthalein polyaryletherketone and preparation method thereof
  • Phenolphthalein polyaryletherketone and preparation method thereof

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preparation example Construction

[0031] The present invention also provides a kind of preparation method of phenolphthalein polyaryletherketone, comprising the following steps:

[0032] Mixing the phenolphthalein polyarylether ketone having the structure of formula (II), catalyst, organic solvent and the epoxy haloalkane having the structure of formula (III), and reacting to obtain the phenolphthalein polyarylether ketone having the structure of formula (I);

[0033]

[0034]

[0035] Wherein, n is the degree of polymerization; 1≤m≤5; X is halogen.

[0036] In the present invention, under the protection of nitrogen, the phenolphthalein polyarylether ketone having the structure of formula (II), catalyst and organic solvent are added to the reactor, preferably at a temperature of 30°C to 50°C, more preferably at a temperature of 35°C to 45°C After stirring, preferably after 20min to 40min, more preferably 25min to 35min, the epoxy haloalkane with the structure of formula (III) is added, and the phenolphth...

Embodiment 1

[0059] Add 3.175g 3,3-bis(4-hydroxyphenyl)benzopyrrolone, 2.185g 4,4-difluorobenzophenone and 1.604 g potassium carbonate, stirred at a temperature of 120°C for 4h, then heated up to 130°C, continued to heat up to 145°C after a constant temperature of 1h, and stirred at a temperature of 145°C for 3h to obtain a phenolphthalein polyaryletherketone having a structure of formula (II) (PEK-IH), the yield is greater than 90%.

Embodiment 2

[0061] Put 0.486g PEK-IH and 0.104g NaH prepared in Example 1 into a three-neck flask with a thermometer, a nitrogen tube and a mechanical stirrer, add 18mL DMSO and stir at 30°C for 30min, then add 0.25mL epichlorohydrin , after reacting for 8 hours, the solution of the above reaction was poured into a beaker containing 50 mL of ethanol under vigorous stirring, and after filtering, it was repeatedly boiled and washed with deionized water, and after drying, a white phenolphthalein polyarylether ketone product was obtained, with a yield of 93 %.

[0062] Gained white product is carried out infrared spectroscopic analysis, the result sees figure 1 , figure 1 It is the infrared spectrogram of the phenolphthalein polyaryletherketone obtained in Example 2 of the present invention. Depend on figure 1 It can be seen that the wave number is 3436cm -1 At the terminal phenolphthalein hydroxyl vibration peak, the wave number is 3062cm -1 The C-H stretching vibration peak on the benz...

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Abstract

The invention provides phenolphthalein polyaryletherketone with a structure of formula (I). In the formula (I), n is polymerization degree; and m is more than or equal to 1 and less than or equal to 5. The invention provides a preparation method of phenolphthalein polyaryletherketone. The preparation method comprises the following steps of: mixing phenolphthalein polyaryletherketone with a structure of formula (II), a catalyst, an organic solvent and epoxy halogenated hydrocarbon with a structure of formula (III) and reacting, to obtain phenolphthalein polyaryletherketone with the structure of the formula (I), wherein, n is the polymerization degree, and m is more than or equal to 1 and less than or equal to 5, and X is halogen. In the phenolphthalein polyaryletherketone with the structure of the formula (I), epoxy groups are positioned on side chains of polymer molecule chains; and the number of the introduced epoxy groups can be regulated and controlled by adjusting the adding ratio of phenolphthalein polyaryletherketone with the structure of the formula (II) to epoxy halogenated hydrocarbon with the structure of the formula (III), and the application range of phenolphthalein polyaryletherketone is widened. In addition, the preparation method is mild in reaction conditions, low in cost and easy to popularize.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a phenolphthalein polyaryletherketone and a preparation method thereof. Background technique [0002] Phenolphthalein polyaryletherketone (PEK-C) is a kind of polyaryletherketone with amorphous structure researched and developed in the 1990s. In addition to the characteristics of traditional polyaryletherketone, such as high temperature resistance, radiation resistance, chemical resistance, good insulation performance and good mechanical properties, phenolphthalein polyaryletherketone also has outstanding advantages such as good solubility and good processability. , is a class of high-performance engineering plastics. Resins containing epoxy groups are an important class of thermosetting resins, which have the advantages of good mechanical properties, strong adhesion and good heat resistance, and have been widely used as matrix resins for structural adhesives and fiber...

Claims

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Application Information

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IPC IPC(8): C08G65/48C09J171/10C08L71/10
Inventor 周光远王红华关兴华王志鹏
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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