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Sulfide-containing high temperature resistant shape memory polyamide resin and its preparation method and application

A technology of polyamide resin and high temperature resistance, which is applied in the preparation of sulfide and organic chemistry, etc. It can solve the problems of low operating temperature, difficulty in application in high temperature and high humidity environment, and high water absorption, and achieve the improvement and broadening of flame retardant grade Research and application fields, the effect of high molecular weight

Active Publication Date: 2020-05-26
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyamides are divided into aliphatic polyamides, semi-aromatic polyamides and aromatic polyamides; conventional aliphatic polyamides are commonly known as nylon, such as nylon 6, nylon 66, etc., which have good processability and cost performance, but their Relatively low temperature and high water absorption rate, it is difficult to apply in high temperature and high humidity environment; while fully aromatic polyamide is famous for its high temperature resistance, high strength and high modulus, such as aramid 1313, 1414, etc., but it is often very It is difficult to form through traditional processing methods, and can only be made into fibers or felt cloth, etc.; and semi-aromatic polyamides just combine the excellent processing performance of traditional aliphatic polyamides with the heat resistance and excellent mechanical properties of fully aromatic polyamides. performance, has become a current research and application hotspot

Method used

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  • Sulfide-containing high temperature resistant shape memory polyamide resin and its preparation method and application
  • Sulfide-containing high temperature resistant shape memory polyamide resin and its preparation method and application
  • Sulfide-containing high temperature resistant shape memory polyamide resin and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Preparation of trihalogenated monomers

[0056] Add 103g of diethylenetriamine, 80g of NaOH, and 5g of sodium stearate into 400ml of deionized water in sequence, and dissolve at room temperature to obtain a solution containing diethylenetriamine; mix 317g of p-fluorobenzoyl chloride with 1000ml of dichloromethane evenly Obtain an organic mixed solution, then add the prepared diethylenetriamine-containing solution dropwise into the organic mixed solution, control the reaction temperature at 5°C, and continue the reaction at room temperature for 6 hours after the dropwise addition, to obtain a trihalogenated monomer;

[0057] (2) Purification of trihalogenated monomers

[0058] Distill off the organic solvent containing trihalogenated monomer obtained in step (1), filter, collect the filter cake, wash the filter cake with deionized water at 80°C for 5 times to remove water-soluble impurities, and then filter to obtain a white powder crude Product, the crude product i...

Embodiment 2

[0073] (1) Preparation of trihalogenated monomers

[0074] Add 103g of diethylenetriamine, 100g of KOH, and 10g of sodium dodecylsulfonate into 1200ml of deionized water in sequence, and dissolve at room temperature to obtain a solution containing diethylenetriamine; mix 348g of p-chlorobenzoyl chloride with 2000ml of chloroform Obtain an organic mixed solution evenly, then add the prepared diethylenetriamine-containing solution dropwise into the organic mixed solution, control the reaction temperature at 10°C, and continue the reaction at room temperature for 8 hours after the dropwise addition, to obtain a trihalogenated monomer ;

[0075] (2) Purification of trihalogenated monomers

[0076] Distill off the organic solvent containing trihalogenated monomers obtained in step (1), filter, collect the filter cake, wash the filter cake with deionized water at 100°C for 5 times to remove water-soluble impurities, and then filter to obtain a white powder crude Product, the crude...

Embodiment 3

[0091] (1) Preparation of trihalogenated monomers

[0092] Add 103g of diethylenetriamine, 180g of sodium hydroxide, and 10g of sodium dioctyl succinic acid sulfonate into 1200ml of deionized water in turn, and dissolve at room temperature to obtain a solution containing diethylenetriamine; mix 348g of p-chlorobenzoyl chloride with 2000ml of chloroform was mixed evenly to obtain an organic mixture, and then the prepared diethylenetriamine-containing solution was added dropwise to the organic mixture, the reaction temperature was controlled at 10°C, and the reaction was continued at room temperature for 8 hours after the dropwise addition to obtain a trihalogen-containing Substitute monomer;

[0093] (2) Purification of trihalogenated monomers

[0094] Distill off the organic solvent containing trihalogenated monomers obtained in step (1), filter, collect the filter cake, wash the filter cake with deionized water at 100°C for 5 times to remove water-soluble impurities, and the...

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Abstract

The invention relates to thioether-containing high-temperature resistant shape memory type polyamide resin and a preparation method and application thereof, and belongs to the field of polymer materials. Raw materials of the provided thioether-containing high-temperature resistant polyamide resin include a thioether-containing triamine or thioether-containing tetramine monomer, aromatic dicarbonylchloride and diamine, and include, by weight, 86.4-626 parts of the diamine, 0.1-216.4 parts of the thioether-containing triamine or thioether-containing tetramine monomer, and 203-455 parts of the aromatic dicarbonyl chloride. A branched tri-substitute or tetra-substitute structure is introduced into the molecular main chain of polyamide through a copolymerization reaction. Because of the tri-substitute or tetra-substitute branched semi-aromatic structural unit in the thioether-containing high-temperature resistant polyamide resin, the obtained resin has excellent molding and processing performance, and because of the branched structure, mechanical performance of the resin is greatly improved, and the polyamide resin is endowed with a novel highly-sensitive high-temperature shape memoryfunction.

Description

technical field [0001] The invention relates to a sulfide-containing high-temperature resistant shape-memory polyamide resin and a preparation method and application thereof, belonging to the field of polymer materials. Background technique [0002] Polyamides are divided into aliphatic polyamides, semi-aromatic polyamides and aromatic polyamides; conventional aliphatic polyamides are commonly known as nylon, such as nylon 6, nylon 66, etc., which have good processability and cost performance, but their Relatively low temperature and high water absorption rate, it is difficult to apply in high temperature and high humidity environment; while fully aromatic polyamide is famous for its high temperature resistance, high strength and high modulus, such as aramid 1313, 1414, etc., but it is often very It is difficult to form through traditional processing methods, and can only be made into fibers or felt cloth, etc.; and semi-aromatic polyamides just combine the excellent process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/42C08J5/18C08L77/06C07C319/14C07C321/30
CPCC07C321/30C08G69/42C08J5/18C08J2377/06
Inventor 张刚严光明杨杰王晗吴喆夫黄骁毛其泽张雨胡全
Owner SICHUAN UNIV
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