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Polyaromatic ether sulfoxide polymer and preparation method thereof

A technology of polymer and polyarylene ether, which is applied in the field of polyarylene ether sulfoxide polymer and its preparation, can solve the problems of high cross-linking temperature of polymer, poor material toughness, complicated processing technology, etc. High thermal stability and good heat resistance

Inactive Publication Date: 2018-12-21
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the introduction of reactive groups such as benzocyclobutene, ethynyl, and benzovinyl narrows the processing window of the polymer, resulting in complex and difficult processing techniques; norbornene imine, phenylmaleimide The introduction of reactive groups such as amines makes the crosslinking temperature of the polymer higher, which makes the implementation difficult, and the toughness of the crosslinked material is generally poor

Method used

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  • Polyaromatic ether sulfoxide polymer and preparation method thereof
  • Polyaromatic ether sulfoxide polymer and preparation method thereof
  • Polyaromatic ether sulfoxide polymer and preparation method thereof

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preparation example Construction

[0042] The present invention provides a preparation method for the polyarylether sulfoxide polymer described in the above technical scheme, comprising the following steps:

[0043] Mix the dihalogen monomer, bisphenol monomer, organic solvent, water-carrying agent and salt-forming agent, and perform a salt-forming reaction to obtain a salt-forming reaction system;

[0044] Carrying out polycondensation reaction of the salt-forming reaction system to obtain a polycondensation polymer;

[0045] heat-treating the polycondensation polymer to obtain a polyarylether sulfoxide polymer;

[0046] When n=1 to 400 in formula I, the dihalogen monomer is a mixture of the first dihalogen monomer and the second dihalogen monomer, and the first dihalogen monomer is 4,4'-dichloro Diphenylsulfoxide or 4,4'-difluorodiphenylsulfoxide, the second dihalogen monomer is 4,4'-difluorodiphenylsulfone, 4,4'-difluorobenzophenone, 3, 3'-difluorobenzophenone, 4,4'-dichlorodiphenylsulfone, 4,4'-bis(4-fluo...

Embodiment 1

[0056] Add 0.15mol 4,4'-dihydroxybiphenyl, 0.15mol 4,4'-dichlorodiphenylsulfoxide, 0.225mol Potassium carbonate, 50mL toluene, and 172.9665g sulfolane make the solid content of the reaction system 25%. Under the protection of nitrogen, the reaction system is heated up to 160°C at a rate of 5°C / min for a salt-forming reaction. During the whole process of heating, the system Water is slowly brought out, and the whole process lasts for 5 hours, and a salt-forming reaction system is obtained; when no water is taken out from the water separator, the temperature is then raised to 200°C at a rate of 2°C / min for polymerization for 6 hours, at 160~ During the heating process at 200°C, toluene was completely discharged because it far exceeded the boiling point of toluene. After the polymerization reaction is completed, discharge the material into deionized water while it is hot, and obtain white filaments with good strength and toughness after fully cooling, grind with a high-speed pulv...

Embodiment 2

[0063] Add 0.15mol 4,4'-dihydroxybiphenyl, 0.075mol 4,4'-dichlorodiphenylsulfone, 0.075mol4,4 '-dichlorodiphenyl sulfoxide, 0.225mol potassium carbonate, 50mL toluene, 176.5665g sulfolane, so that the solid content of the reaction system is 25%, and the reaction system is heated to 160°C at a speed of 5°C / min under nitrogen protection, Carry out a salt-forming reaction, and water is slowly brought out of the system during the whole process of heating up. The whole process lasts for 5 hours, and a salt-forming reaction system is obtained; when no water is taken out in the water separator, the temperature is then raised at a rate of 2°C / min The polymerization reaction was carried out at 190°C for 6h. During the heating process at 160-190°C, toluene is further discharged because it far exceeds the boiling point of toluene. After the polymerization reaction is completed, discharge the material into deionized water while it is hot, and obtain white filaments with good strength and...

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Abstract

The invention provides a polyaromatic ether sulfoxide polymer. A sulfoxide group is introduced into polyether sulphone, the tensile modulus of the polyaromatic ether sulfoxide polymer after crosslinking is 2.8-3.1GPa, the tensile strength is larger than 110 MPa, the elongation at break is larger than 6 percent, and shown that the polyaromatic ether sulfoxide polymer after heat treatment has good mechanical performance. After crosslinking, the polyaromatic ether sulfoxide polymer provided by the invention has relatively high glass-transition temperature larger than 250 DEG C and is high in heatstability and good in heat resistance; and the obtained polyaromatic ether sulfoxide polymer can realize formation at low temperature and is a polymer with a great application potential.

Description

technical field [0001] The invention relates to the technical field of heat-resistant engineering plastics, in particular to a polyarylether sulfoxide polymer and a preparation method thereof. Background technique [0002] Polyaryl ether sulfone is a kind of high-performance thermoplastic engineering plastics with excellent comprehensive properties. The ether bond in the molecular structure greatly improves the chain rigidity caused by the existence of aromatic rings, so that the polymer has good heat resistance, Excellent mechanical properties and good solvent resistance. These excellent properties make polyarylethersulfone widely used in many industries such as aerospace, electrical appliances and electronics. [0003] With the rapid development of science and technology, higher requirements are put forward for the performance of polymer materials, such as requiring materials to have a higher glass transition temperature. In order to further improve the performance of po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/23
Inventor 陈春海刘红蕾王大明周宏伟赵晓刚
Owner JILIN UNIV
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