Porous phthalonitrile resin and preparation method thereof, and application of resin

A technology of phthalonitrile resin and phthalonitrile, which is applied in the field of porous materials to achieve the effects of excellent heat resistance and mechanical properties, and efficient preparation

Active Publication Date: 2016-05-11
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Porous phthalonitrile resin and preparation method thereof, and application of resin
  • Porous phthalonitrile resin and preparation method thereof, and application of resin
  • Porous phthalonitrile resin and preparation method thereof, and application of resin

Examples

Experimental program
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Effect test

Embodiment 1

[0057] In a three-necked flask equipped with a stirrer, a thermometer and a reflux condenser, add 100 g of m-phenylene ether type phthalonitrile shown in formula (I), slowly heat up to 150 ° C, and add 10 g of polyarylether nitrile after the temperature stabilizes (PEEN), add 20g of polytrimethylene carbonate after PEEN is dissolved, react at a constant temperature of 150°C until the resin system is uniform and transparent, keep the temperature for 30min, cool down to 110°C, add 10g of 4,4'-diaminodiphenylmethane, stir After 10 minutes, the modified phthalonitrile resin was obtained.

[0058] Put the modified phthalonitrile resin obtained above in a vacuum drying oven at 140° C. for 5 to 10 minutes. Until the system has no bubbles and becomes a homogeneous fluid. It is then poured into a custom-made steel mold, and then placed in an electric constant temperature drying oven to cure in stages. The curing heating process is: 170°C / 2h, 200°C / 1h, 250°C / 5h, 315°C / 2h, 350°C / 5h. A...

Embodiment 2

[0061] In a three-necked flask equipped with a stirrer, a thermometer and a reflux condenser, add 100 g of m-phenylene ether type phthalonitrile shown in formula (I), slowly heat up to 150 ° C, and add 10 g of polyarylether nitrile after the temperature stabilizes (PEEN), after PEEN is dissolved, add 30g of polypropylene glycol, react at a constant temperature of 150°C until the resin system is uniform and transparent, keep the temperature for 30min, cool down to 110°C, add 10g of 4,4'-diaminodiphenylmethane, and stir for 10min to obtain the modified Reactive phthalonitrile resin.

[0062] Put the modified phthalonitrile resin obtained above in a vacuum drying oven at 140° C. for 5 to 10 minutes. Until the system has no bubbles and becomes a homogeneous fluid. It is then poured into a custom-made steel mold, and then placed in an electric constant temperature drying oven to cure in stages. The curing heating process is: 170°C / 2h, 200°C / 1h, 250°C / 5h, 315°C / 2h, 350°C / 5h. A po...

Embodiment 3

[0064] In a three-necked flask equipped with a stirrer, a thermometer and a reflux condenser, add 100 g of phenolic phthalonitrile oligomers shown in formula (II), slowly heat up to 120 ° C, and add 10 g of polyimide after the temperature stabilizes. Amine (PI), add 40g of polymethyl methacrylate after PI is dissolved, react at a constant temperature of 120°C until the resin system is uniform and transparent, keep the reaction for 30min, cool down to 100°C, add 15g of 2,2'-bis(4-hydroxybenzene Base) propane, after stirring for 10min, the modified phthalonitrile resin was obtained.

[0065] Put the modified phthalonitrile resin obtained above in a vacuum drying oven at 140° C. for 5 to 10 minutes. Until the system has no bubbles and becomes a homogeneous fluid. It is then poured into a custom-made steel mold, and then placed in an electric constant temperature drying oven to cure in stages. The curing heating process is: 170°C / 2h, 200°C / 1h, 250°C / 5h, 315°C / 2h, 350°C / 5h. A po...

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Abstract

The invention discloses a porous phthalonitrile resin and a preparation method thereof, and application of the resin. The resin is prepared by blending the following composition and carrying out reaction and curing. The composition comprises the following components in parts by weight: 20-100 parts of phthalonitrile, 1-80 parts of pore-forming agent, 1-20 parts of catalyst and 2-20 parts of optional thermoplastic high molecule. The phthalonitrile resin forms pores due to the decomposition of the pore-forming agent in the curing process, and thus, the invention provides a simple environment-friendly high-efficiency method for preparing the porous material. The appropriate phthalonitrile matrix and pore-forming agent can be selected to implement the control on the pore structure. The porous phthalonitrile resin disclosed by the invention has excellent heat stability and mechanical properties, can be used as a high-performance composite material resin matrix, and has application values in the field of aerospace.

Description

technical field [0001] The invention belongs to the field of porous materials, in particular to a porous phthalonitrile resin and its preparation method and application. Background technique [0002] Porous materials are a class of materials containing a large number of pores, which have the advantages of low relative density, large specific surface area, low thermal conductivity, and high specific strength. The application of this kind of material involves aerospace, medicine, environmental protection, construction and other industries, and can be used in many occasions such as water and oil separation, filtration, noise reduction, adsorption, vibration absorption, and heat insulation. According to the regulations of the International Union of Pure and Applied Chemistry (IUPAC), porous materials are divided into three categories according to the size of the pores: those with a pore size smaller than 2nm are called microporous materials; those with a pore size larger than 50...

Claims

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Application Information

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IPC IPC(8): C08G73/06C08J9/26C08L79/04C08K7/10
CPCC08G73/0672C08J9/26C08J2379/04C08L79/04C08L2201/08C08L79/08C08K7/10
Inventor 郭颖周恒赵彤
Owner INST OF CHEM CHINESE ACAD OF SCI
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