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A kind of polysulfone resin polymer material and preparation method thereof

A technology of polymer materials and polysulfone, which is applied in the field of polysulfone resin polymer materials and its preparation, can solve the problems of polysulfone material product quality adverse effects, affecting the storage and use of polysulfone materials, difficult to dissolve and remove, etc. Achieve the effects of reducing the impact of cyclic dimer impurities, making the preparation method simple and convenient, and improving quality

Active Publication Date: 2022-04-19
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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  • A kind of polysulfone resin polymer material and preparation method thereof
  • A kind of polysulfone resin polymer material and preparation method thereof
  • A kind of polysulfone resin polymer material and preparation method thereof

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preparation example Construction

[0028] See figure 1 and 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 polysulfone...

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 is to use 4,4'-dichlorodiphenyl sulfone, potassium carbonate and polymer monomers as raw materials, and dimethylacetamide as an organic The solvent uses toluene as a water-removing agent, comprising the following steps: mixing 4,4'-dichlorodiphenyl sulfone, potassium carbonate, polymerizable monomers, dimethylacetamide and toluene for polymerization to obtain a polymer solution; and 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 powdered polysulfone products, wherein the content of cyclic dimers in the powdered polysulfone products was less than or equal to 0.03 wt%. The invention solves the problem of high content of cyclic dimers in the production process of polysulfone resins in the prior art, improves the product quality of polysulfone resins, and reduces the residual cyclic dimers in downstream products of polysulfone resins. Production problems caused by high volume.

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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Patent Type & Authority Patents(China)
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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