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Polyaryl ether nitrile resin and industrialized synthetic method thereof

A polyarylether nitrile and synthesis method technology, applied in the field of polymer materials, can solve the problems of low purity of recovered solvent, low efficiency of recovered solvent, poor reuse effect, etc., achieve significant economic and social benefits, and easy to realize production conditions , The effect of reducing production costs

Inactive Publication Date: 2012-11-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

There are many deficiencies in these inventions, at first, the polyarylether nitrile resin of preparation is all the resin of amorphous or low crystallinity (crystallinity is lower than below 10%), and its product solubility is too big when synthesizing, causes this class product to be not resistant to strong Corrosion by polar solvents; secondly, steps such as water precipitation must be passed after the synthesis in the preparation method, resulting in low efficiency of solvent recovery and high energy consumption; finally, low purity of recovered solvents leads to poor reuse effect

Method used

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  • Polyaryl ether nitrile resin and industrialized synthetic method thereof
  • Polyaryl ether nitrile resin and industrialized synthetic method thereof

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preparation example Construction

[0037] The present invention also provides the industrial synthesis method of polyarylether nitrile resin, comprises the following steps:

[0038] (1) Polymerization reaction:

[0039] Using 2,6-dihalobenzonitrile and aromatic dihydric phenol as reaction raw materials, react under the action of aprotic strong polar solvent, catalyst and dehydrating agent to obtain polyarylether nitrile solution; then the obtained polyarylether nitrile The solution is processed by flash evaporation to obtain polyarylether nitrile powder; wherein, the aromatic dihydric phenol is at least one of hydroquinone or resorcinol;

[0040] (2) post-processing

[0041] Grinding the above polyarylether nitrile powder into a powder with a particle size of ≤0.1 mm, soaking the powder in an organic solvent, separating the solid from the liquid, recycling the liquid, washing the solid with boiling water, filtering, and drying to obtain the polyarylether nitrile resin of the present invention.

[0042] The fl...

Embodiment 1

[0049] The preparation and performance thereof of embodiment 1 high crystallinity polyarylether nitrile

[0050] At 10m with separator, condenser, agitator and heater 3 Weigh the raw materials in the reaction kettle according to the following molar ratio: 2,6-dichlorobenzonitrile: resorcinol / hydroquinone: potassium carbonate: N-methylpyrrolidone: toluene=1:1:1.1~1.5 ︰6~8︰1.2~1.5, wherein the molar ratio of resorcinol to hydroquinone is 1:9; start stirring, raise the temperature to 150°C for dehydration reaction for 2 hours, steam the toluene through the water separator, and raise the temperature to 180-200°C, after 3 hours of reaction, inject 400kg of N-methylpyrrolidone solvent into the reactor so that the reactants can be quickly put into the 18m 3 In a flash kettle with a pulverizing blade stirrer, steam N-methylpyrrolidone under reduced pressure at 160-180°C under strong stirring. The above-mentioned fine powder of solid matter is ground into a fine powder with a size of...

Embodiment 2-6

[0052] Preparation and properties of embodiment 2-6 high crystallinity polyarylether nitrile

[0053] Change the resorcinol and hydroquinone molar ratios in Example 1 to 0.5:9.5 (Example 2), 0:10 (Example 3), 9:1 (Example 4), 9.5:0.5 (embodiment 5), 10:0 (embodiment 6), others are all with embodiment 1; The performance of gained resin is shown in Table 1.

[0054] Table 1 High Crystalline Polyether Nitrile Resin Properties

[0055]

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Abstract

The invention belongs to the technical field of polymer materials, and especially relates to a polyaryl ether nitrile resin and an industrialized synthetic method thereof. The structural unit of the polyaryl ether nitrile resin is one of units shown in the specification, and the crystallinity degree of the polyaryl ether nitrile resin is 28-38%. The polyaryl ether nitrile resin prepared by the invention is high in purity and high in crystallinity degree (28-38%); the glass transition temperature is 150-180 DEG C, the melting point is 310-355 DEG C, and the initial decomposition temperature is more than 450 DEG C; the resin has higher mechanical strength, the tensile strength is 100-120Mpa, the tensile modulus is 2.4-3.6GPa, and the bending strength is 100-140Mpa; and therefore, the polyaryl ether nitrile resin prepared by using the method disclosed by the invention can be applied to the fields such as aerospace, electronics, machinery, medical treatment, chemical engineering and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a polyarylether nitrile resin and an industrial synthesis method thereof. Background technique [0002] Polyarylene ether nitrile is a kind of thermoplastic polymer with nitrile group on the side chain. It is a kind of crystalline high-density polymer with excellent comprehensive performance developed for the needs of national defense industry and cutting-edge technology since the 1980s. Molecular materials, with excellent properties such as high heat resistance, flame retardancy, mechanical strength, UV protection and creep resistance. Due to its excellent comprehensive performance, it can be widely used in aerospace, electronic packaging, machinery manufacturing, auto parts and other fields. [0003] The existing Chinese invention patents on polyarylether nitrile resins include: an industrial production method of polyarylether nitrile (ZL200610038381.8), an industria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/40C08G65/46C08J3/12
Inventor 刘孝波杨建蒲泽军陈兰
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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