A kind of polytriazole with intrinsic flame retardancy and its preparation method and application

An intrinsic flame retardant and polytriazole technology, applied in the fields of polymer chemistry and materials science, achieves the effects of high degree of freedom, simplified experimental operation, and great advantages in flame retardant performance

Active Publication Date: 2018-07-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, metal-free catalyzed click polymerization has been reported by activating alkyne monomers, and azide molecules, as a class of compounds with rich structures and easy synthesis, can realize metal-free catalyzed click polymerization through activated azide monomers. Aggregation is rarely reported

Method used

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  • A kind of polytriazole with intrinsic flame retardancy and its preparation method and application
  • A kind of polytriazole with intrinsic flame retardancy and its preparation method and application
  • A kind of polytriazole with intrinsic flame retardancy and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A kind of polytriazole, its structural formula is as shown in P1:

[0051]

[0052] The reaction equation is as formula (1):

[0053]

[0054] Among them, the monomer M2 is synthesized according to the method reported in the published literature (J.Fluorine Chem.2008, 129, 1003), and the synthesis method of the monomer M1 is as follows:

[0055] The reaction equation of monomer M1 is as formula (2):

[0056]

[0057] Among them, the molecule 2,1,6-hexanediol can be purchased from the market, in this example, it is purchased from TCI Company.

[0058] The preparation steps of monomer M1 are as follows:

[0059] Add 3.46mL of pentafluorobenzoyl chloride to 20mL of dichloromethane, add a mixed solution of 25mL of dichloromethane, 1.18g of 1,6-hexanediol, and 3.6mL of triethylamine dropwise to the above 20mL of dichloromethane The mixed solution was stirred at room temperature for three hours. After filtration, the filtrate was concentrated to obtain molecule 3...

Embodiment 2

[0066] A kind of polytriazole, its structural formula is as shown in P2:

[0067]

[0068] The reaction equation is as formula (3):

[0069]

[0070]

[0071] Wherein, the synthetic method of monomer M1, M2 is the same as embodiment 1.

[0072] The preparation steps of P2 are as follows:

[0073] 99.4 mL of monomer M1 and 57.2 mg of monomer M2 were added to a 10 mL thick-walled polymerization tube. The polymerization tube was placed in an oil bath at 110° C. and stirred for 2 h. Cool, add 4 mL of chloroform to dissolve, then add it dropwise into 500r / min stirred methanol, let stand, filter, and dry to obtain polytriazole P2.

[0074] After determination and analysis, the yield of polytriazole P2 was 81%, the weight average molecular weight was 100,000, and the molecular weight distribution was 2.62.

Embodiment 3

[0076] A kind of polytriazole, its structural formula is as shown in P3:

[0077]

[0078] The reaction equation is as formula (4):

[0079]

[0080] Wherein, the synthetic method of monomer M2 is the same as embodiment 1, and the reaction equation of monomer M3 is as formula (five);

[0081]

[0082] Among them, molecule 1 was purchased from TCI Company, and molecule 3 was purchased from J&K Company.

[0083] The preparation steps of monomer M3 are as follows:

[0084] 5.53g of pentafluorobenzoyl chloride was added to 25mL of dichloromethane, and a mixed solution of 25mL of dichloromethane, 2.28g of bisphenol A, and 2.83g of triethylamine was added dropwise to the above-mentioned 25mL of dichloromethane mixed solution, Stir at room temperature for three hours. After filtration, the filtrate was concentrated to obtain molecule 4.

[0085] Add 3.08g of molecule 4 and 0.78g of sodium azide into 80mL of acetone-water mixed solvent (volume ratio: 3:1), and stir overni...

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Abstract

The invention belongs to the field of high-polymer chemistry and materials science, and discloses polytriazole with intrinsic flame retardance and a preparing method and application thereof. Polytriazole has structures shown in the formula (I) or (II), wherein n represents an integer ranging from two to two hundreds, R1, R3 and R4 represent the same or different organic groups, R2 represents a connecting functional group, Fx represents fluorine atoms connected to a benzene ring, and x represents the number of F atoms and is an integer ranging from two to four. A two-functionality-degree or three-functionality-degree compound containing multi-fluorine aryl activated azido and a two-functionality-degree alkynyl compound are subjected to polymerization reaction in organic solvent or in a molten state to obtain polytriazole. Prepared polytriazole has excellent machinability, film-forming property, high heat stability, intrinsic flame retardance and aggregation-induced emission performance and can be used for chemical fluorescence detection and preparation of a flame retardant material.

Description

technical field [0001] The invention belongs to the field of macromolecular chemistry and material science, and in particular relates to a polytriazole with intrinsic flame retardancy and its preparation method and application. Background technique [0002] New polymerization reactions or polymer preparation methods play a vital role in obtaining polymer materials with specific properties and promoting the development of polymer science. Since the concept of click chemistry and click reaction was proposed in 2001, it has gained great attention from scientists in the fields of chemistry, materials and polymers. Among them, the cycloaddition reaction of alkynes and azide molecules catalyzed by monovalent copper has many advantages such as super high efficiency, specificity, regioselectivity, easy separation of products, and mild reaction conditions. , biological fields, drug delivery, coatings and other fields have rapidly gained a wide range of applications. At the same tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/08
CPCC08G73/08
Inventor 唐本忠吴永伟秦安军胡蓉蓉赵祖金
Owner SOUTH CHINA UNIV OF TECH
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