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Polysulfone resin polymer material and preparation method thereof

A polymer material and polysulfone technology, applied in the field of polysulfone resin polymer materials and their preparation, can solve the problems of adverse effects on the product quality of polysulfone materials, affecting the storage and use of polysulfone materials, difficult to dissolve and remove, and the like, To achieve the effect of reducing the influence of cyclic dimer impurities, the preparation method is simple and convenient, and reducing the content of cyclic dimer

Active Publication Date: 2020-04-28
NINGXIA QINGYAN POLYMER MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current one-step method, the volume of material ratio DMAC is the sum of the mass of DCDPS and polymerized monomers divided by a coefficient of 0.3. However, the polysulfone materials synthesized under this reaction system concentration condition contain a large proportion of about (0.5wt%) rings. Dimer by-products, which adversely affect the product quality of polysulfone materials
[0004] This cyclic dimer slowly crystallizes from polysulfone solution in polar aprotic solvents such as dimethylformamide (DMF) or dimethylacetamide (DMAC), making the production of polysulfone downstream products, solvent In the process of preparing polymers, such as the casting process of ultrafiltration membranes, there are production problems of crystallization
Moreover, this cyclic dimer deposits on the wall of the polysulfone solution storage container as hard crystalline scale. Once formed, this scale is extremely difficult to dissolve, insoluble in traditional organic solvents, and difficult to dissolve and remove at a temperature of 400 ° C. Storage and use of polysulfone materials

Method used

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  • Polysulfone resin polymer material and preparation method thereof
  • Polysulfone resin polymer material and preparation method thereof
  • Polysulfone resin polymer material and preparation method thereof

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preparation example Construction

[0028] See figure 1 with figure 2 , figure 1 It is the polysulfone resin polymerization reaction diagram of the present invention; figure 2 It is the structural diagram of the polysulfone ring dimer described in the present invention. The invention provides a preparation method of a polysulfone resin polymer material. The preparation method uses 4,4'-dichlorodiphenylsulfone, potassium carbonate and polymerized monomers as raw materials, and uses dimethylacetamide as an organic solvent. Toluene or xylene is used as the water removal agent, and the preparation method comprises the following steps:

[0029] (1) mixing the above-mentioned 4,4'-dichlorodiphenyl sulfone, potassium carbonate, polymerizable monomers, dimethylacetamide and toluene for polymerization reaction to obtain a polymer solution; and

[0030] (2) After the polymer solution was cooled to room temperature, it was settled into deionized water, washed 5 times at 80°C, and dried to obtain a powdered polysulfon...

Embodiment 1

[0050] DMAC usage calculation coefficient X=0.1:

[0051] (1) 200LDMAC, 100L Tol, 10kg DCDPS, bisphenol A BPA 10kg, K 2 CO 3 11.5kg, all were added to a 500L reactor, under nitrogen protection, water was separated at 140°C for 8 hours, Tol was evaporated, the temperature was raised to 180°C, and polymerization was maintained at 180°C for 4 hours;

[0052] (2) Post-treatment: After the reaction is completed, cool to room temperature, settle into deionized water, wash 5 times at 80°C, and dry to obtain powdered bisphenol A polysulfone product (PSU);

[0053] (3) The intrinsic viscosity of the obtained polysulfone product was tested by Ubbelohde viscometer and the molecular weight distribution was tested by GPC by gel permeation chromatography, and the content of cyclic dimer was determined to be 0.013 wt%.

Embodiment 2

[0055] DMAC usage calculation coefficient X=0.18:

[0056] (1) 111.1L DMAC, 56.6L Tol, 10kg DCDPS, bisphenol A BPA 10kg, K 2 CO 3 11.5kg, all were added to a 300L reactor, under nitrogen protection, water was separated at 140°C for 8 hours, Tol was evaporated, the temperature was raised to 180°C, and polymerization was maintained at 180°C for 4 hours;

[0057] (2) Post-treatment: After the reaction is completed, cool to room temperature, settle into deionized water, wash 5 times at 80°C, and dry to obtain powdered bisphenol A polysulfone product (PSU);

[0058] (3) The intrinsic viscosity of the obtained polysulfone product was tested by Ubbelohde viscometer and the molecular weight distribution was tested by GPC by gel permeation chromatography, and the content of cyclic dimer was determined to be 0.011 wt%.

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Abstract

The invention discloses a polysulfone resin polymer material and a preparation method thereof. The preparation method takes 4,4'-dichlorodiphenyl sulfone, potassium carbonate and a polymerization monomer as raw materials, dimethylacetamide as an organic solvent and toluene as a water removal agent, and comprises the following steps: mixing 4,4'-dichlorodiphenyl sulfone, potassium carbonate, the polymerization monomer, dimethylacetamide and toluene for polymerization reaction to obtain a polymer solution; and cooling the polymer solution to room temperature, settling the polymer solution into deionized water, washing the mixture for 5 times at 80 DEG C, and drying the mixture to obtain a powdery polysulfone product of which the cyclic dimer content is less than or equal to 0.03 wt%. According to the invention, the problem of high cyclic dimer content in a polysulfone resin production process in the prior art is solved, the product quality of polysulfone resin is improved, and the production problem of downstream products of polysulfone resin caused by high residual quantity of cyclic dimers is reduced.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polysulfone resin polymer material and a preparation method thereof. Background technique [0002] Polysulfone is a high molecular polymer, an amorphous, thermoplastic resin. At present, industrialized polysulfone resins mainly include bisphenol A polysulfone (PSU / PSF), polyethersulfone (PES / PESU), polyphenylsulfone / polyarylsulfone / polyphenylenesulfone (PPSU). Its characteristics are: excellent mechanical properties, high rigidity, wear resistance, high strength, etc. Due to its good characteristics, polysulfone has been widely used in medical equipment, aerospace, electronics and other high-end materials. [0003] At present, the most advanced production technology of polysulfone polymer materials is a one-step synthesis method. One-step synthesis method: main raw materials 4,4'-dichlorodiphenyl sulfone, polymerized monomer, potassium carbonate or potas...

Claims

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Application Information

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IPC IPC(8): C08G75/20C08G75/23
CPCC08G75/20C08G75/23
Inventor 张东宝张奇于冉
Owner NINGXIA QINGYAN POLYMER MATERIALS CO LTD
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