Polythiourea compound as well as preparation method and application thereof
An amine compound and compound technology, applied in the fields of polymer chemistry and materials science, can solve the problems of complex separation and purification process, high energy consumption, unfavorable development of polythiourea, etc., and achieve strong tolerance, high polymerization efficiency, Inexpensive effect
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[0035] The invention provides a kind of preparation method of polythiourea compound, comprises the following steps:
[0036] (1) Under a protective gas, mix amine compounds, elemental sulfur and triphenylphosphine difluoroacetic acid inner salt, add an organic solvent to obtain a mixed solution, heat up and stir at this temperature to carry out polymerization;
[0037] (2) After the reaction in step (1) is complete, the reaction system is cooled, the reaction mother liquor is dissolved in an organic solvent, and then added to a precipitant for precipitation, and the precipitate is collected and dried to a constant weight to obtain polythiourea class of compounds.
[0038] Amine compounds in the present invention include diamines and polyamines.
[0039] In the present invention, when the preferred amine compound is a polyamine compound, the molar ratio of polyamine compound: elemental sulfur: triphenylphosphine difluoroacetic acid inner salt is 1:2-10:1-4.
[0040] In the pr...
Embodiment 1
[0057] A polythiourea compound, its structural formula is shown in P1:
[0058]
[0059]The polythiourea compound is prepared by direct reaction of triphenylphosphine difluoroacetic acid inner salt, elemental sulfur and diamine, and the reaction formula is as formula (1):
[0060]
[0061] Wherein, the monomer M1 is 1,4-diaminodiphenylmethane, which can be purchased from the market, in this example, from Anaiji Company; M is sublimed sulfur, which can be purchased from the market, and in this example, it was purchased from Aladdin Company; M0 is the internal salt of triphenylphosphine difluoroacetic acid, which can be purchased from the market, and in this example, it was purchased from Shangfu Technology Co., Ltd.
[0062] The synthesis steps of the described polythiourea are as follows: monomer M1, monomer M, and monomer M0 are sequentially added into the polymerization tube according to the molar ratio of 1:4:2, and the concentration of injecting dimethyl sulfoxide to...
Embodiment 2
[0068] A polythiourea compound, its structural formula is shown in P2:
[0069]
[0070] The polythiourea compound is prepared by direct reaction of triphenylphosphine difluoroacetic acid inner salt, elemental sulfur and diamine, and the reaction formula is as formula (2):
[0071]
[0072] Wherein, the monomer M2 is 1,4-diaminodiphenyl ether, which can be purchased from the market, in this example, from Anaiji Company; M is sublimed sulfur, which can be purchased from the market, and in this example, it was purchased from Aladdin Company; M0 is the internal salt of triphenylphosphine difluoroacetic acid, which can be purchased from the market, and in this example, it was purchased from Shangfluorine Technology Co., Ltd.
[0073] The synthesis steps of the polythiourea are as follows: monomer M2, monomer M, and monomer M0 are sequentially added into the polymerization tube according to the molar ratio of 1:2:1, and dimethyl sulfoxide is injected until the concentration o...
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