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Hot-melt phthalonitrile resin as well as preparation method and application thereof

A technology of phthalonitrile resin and phthalonitrile, which is applied in the field of hot-melt phthalonitrile resin and its preparation, can solve the problem of difficult maintenance of heat resistance and mechanical properties of resin, and difficulty in maintaining normal temperature paving of resin. Overwhelming, high-temperature fluidity, heat resistance, mechanics and other issues, to achieve the effect of improving application effect and field, improving heat resistance and mechanical properties, and improving processability

Active Publication Date: 2021-07-13
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although there have been studies on modifying phthalonitrile resins to make it suitable for hot-melt coating technology, such as introducing viscosity reducers or high-temperature tackifiers, etc., when introducing viscosity reducers or high-temperature thickeners in the resin to When improving its processing performance, it is difficult to maintain the heat resistance and mechanical properties of the resin; that is to say, it is difficult for the existing phthalonitrile resin to take into account the normal temperature coating and High temperature fluidity and maintain its own heat resistance, mechanical properties and other properties

Method used

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  • Hot-melt phthalonitrile resin as well as preparation method and application thereof
  • Hot-melt phthalonitrile resin as well as preparation method and application thereof
  • Hot-melt phthalonitrile resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] 30 g of the formula (9) shown in a three-mouth flask equipped with a stirrer, a thermometer and a reflux condenser (92 ° C of the second phthalonitrile monomer), The temperature was slowly warmed to 150 ° C, and the temperature was stably added to the first phthalonitrile monomer shown in the formula (3) (197 ° C of the first phthalonitrile monomer), and the mixture was stirred even after it was stirred. The incubation reaction was allowed to be 30 min, and 15 g of polyether ether ketone (PEEK) was added to 100 ° C. After stirring for 10 min, the mixture was added, and 10 g of trioyl isocyanurate (TAIC) and 5G were added after stirring for 10 min. 3-phenylacetylene (APA), stirred for 40min, to obtain phthalonitrile modified resin, the resin is a brown-green viscous liquid.

[0079]

Embodiment 2

[0081] 50 g of the formula (9) shown in a three flask equipped with a stirrer, a thermometer, and a refluxed condenser (92 ° C of the second phthalonitrile monomer), The temperature was slowly warmed to 150 ° C, and the temperature was stably added to the first phthalonitrile monomer shown in the formula (3) (the melting point of the first phthalonyl monomer was 197 ° C), and the mixture was stirred even after The incubation reaction was 40 min, and 10 g of polyether ketone (PEK) was added to 100 ° C, and 4 g of tri-aluminum oxide powder was added, and then 8 g of trioleanate (TAIC) and 5 g chlorine were added after stirring for 10 min. Zinc, stirred for 25 min, resulting in modified phthalonitrile resin, and the resin is a brown-green viscous liquid.

[0082]

Embodiment 3

[0084] 20 g of the second phthalonyl monomer (the melting point of the second phthalonthrol monomer) (95 ° C) was added to the three flask equipped with a stirrer, a thermometer and a reflux condenser. The temperature was slowly warmed to 140 ° C, and the temperature was stably added to the first phthalonyl monomer (the melting point of the first phthalonyl monomer) of 80 g (178 ° C), and the mixture was mixed after it was stirred. The incubation reaction was allowed to be 30 min, and 5 g of polyether sulfone (PES) was added to 100 ° C. After stirring for 10 min, 3 g of silica was added, and 5 g of trioleanate isocyanurate (TAIC) and 1 g 4, 4 'were added. - diaminodiphenyl sulfone (the DDS), stirred for 40min, to obtain phthalonitrile modified resin, the resin is a brown-green viscous liquid.

[0085]

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Abstract

The invention discloses hot-melt phthalonitrile resin as well as a preparation method and application thereof. The composition for preparing the hot-melt phthalonitrile resin is prepared from the following components in parts by weight: 50 to 80 parts of a first phthalonitrile monomer, 20 to 50 parts of a second phthalonitrile monomer, 0.5 to 50 parts of thermoplastic macromolecules, 0.5 to 50 parts of inorganic powder, 0.1 to 50 parts of a viscosity reducer with an aromatic ring structure and 0.05 to 15 parts of a curing agent, the first phthalonitrile monomer and the second phthalonitrile monomer are phthalonitrile monomers with structures shown in a formula (I); and the melting point of the second phthalonitrile monomer is lower than that of the first phthalonitrile monomer. The hot-melt phthalonitrile monomer disclosed by the invention is excellent in processing property, thermal stability and composite material mechanical property, can be used as a high-performance composite material resin matrix, and has application value in the fields of ships, military equipment, aerospace and the like.

Description

Technical field [0001] The present invention belongs to the field of phthalonitrile resin, and more particularly to a thermometreo terephthalonitrile resin and a preparation method thereof. Background technique [0002] The resin group composite is compositely complicated with an organic polymer and a reinforcing material, which has advantages such as light, high heat resistance, high strength, and designed, widely used in aviation, automobiles, marine industries and other fields. The resin group composite molding process includes molding, winding, pultrusion, liquid molding, and the like. The molding process is the most widely used, and the molded molding is added to the metal abrasive, and then heats and pressurized, solidified by molding. Its production efficiency is high, low cost, high product precision, and can be formed once. The prepared preparation process for molding molding includes two processes of wet impregnation and hot melt coating. Among them, the wet impregnatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/36C08G65/48C08G65/337C08G65/333C08G75/23C08K3/38C08K3/36C08K3/22C08K3/34C08J5/24
CPCC08G8/36C08G65/48C08G65/337C08G65/33375C08G75/23C08K3/38C08K3/36C08K3/22C08K3/34C08J5/24C08K2003/385C08K2003/2227C08J2361/16C08J2381/06C08J2371/10C08J2371/00
Inventor 周恒郭颖丁江楠赵彤刘翔刘金帅
Owner INST OF CHEM CHINESE ACAD OF SCI