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Polymer substrate material, membrane bioreactor (MBR) flat membrane supporting plate material and preparation method of polymer substrate material

A base material and polymer technology, applied in the field of processing materials, can solve the problems of high cost and heavy weight, and achieve the effects of low price, good injection molding and extrusion capabilities, and easy processing

Inactive Publication Date: 2022-04-12
刘朋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of polymer base material, be used for MBR flat film support board material and preparation method thereof, to solve the existing MBR flat film support board after adopting ABS resin processing to exist heavy, the problem of high cost

Method used

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  • Polymer substrate material, membrane bioreactor (MBR) flat membrane supporting plate material and preparation method of polymer substrate material
  • Polymer substrate material, membrane bioreactor (MBR) flat membrane supporting plate material and preparation method of polymer substrate material
  • Polymer substrate material, membrane bioreactor (MBR) flat membrane supporting plate material and preparation method of polymer substrate material

Examples

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Embodiment 1

[0028] The polymer base material of this embodiment is characterized by comprising: terephthalic acid, ethylene glycol and cyclohexanedimethanol, the molar ratio of which is 0.8:0.75:0.75.

[0029] The preparation method of the polymer base material of this embodiment includes the following steps: mixing terephthalic acid, ethylene glycol and cyclohexanedimethanol to form a slurry, first performing an esterification reaction, and completing the esterification reaction The intrinsic viscosity is 0.10dl / g, and polycondensation reaction is carried out.

[0030] Wherein, esterification comprises carrying out separately successively:

[0031] (1) The first esterification stage: under the esterification conditions of a gauge pressure of 50kpa, a temperature of 250°C, and a liquid level of 30%, the residence time was 2.5 hours;

[0032] (2) The second esterification stage: gauge pressure 0.5kpa, temperature 260°C, liquid level 35% under esterification conditions, residence time 1.5 ...

Embodiment 2

[0039] The polymer base material of this embodiment is characterized by comprising: terephthalic acid, ethylene glycol and cyclohexanedimethanol, the molar ratio of which is 1.2:0.8:1.0.

[0040] The preparation method of the polymer base material of this embodiment includes the following steps: mixing terephthalic acid, ethylene glycol and cyclohexanedimethanol to form a slurry, first performing an esterification reaction, and completing the esterification reaction The intrinsic viscosity is 0.17dl / g, and polycondensation reaction is carried out.

[0041] Wherein, esterification comprises carrying out separately successively:

[0042] (1) The first esterification stage: under the esterification conditions of gauge pressure 85kpa, temperature 265°C, and liquid level 55%, the residence time is 4 hours;

[0043] (2) The second esterification stage: gauge pressure 3.5kpa, temperature 270 ° C, liquid level 50% under the esterification conditions, residence time 2 hours;

[0044]...

Embodiment 3

[0050] The polymer base material of this embodiment is characterized in that it comprises: terephthalic acid, ethylene glycol and cyclohexane dimethanol, and its molar ratio is (0.8~1.5):(0.75~0.8):(0.75~1.2) .

[0051] The preparation method of the polymer base material of this embodiment includes the following steps: mixing terephthalic acid, ethylene glycol and cyclohexanedimethanol to form a slurry, first performing an esterification reaction, and completing the esterification reaction The intrinsic viscosity is (0.10-0.20) dl / g, and then undergoes polycondensation reaction.

[0052] Wherein, esterification comprises carrying out separately successively:

[0053] (1) The first esterification stage: under the esterification conditions of gauge pressure (50-100) kpa, temperature (250-280) ° C, liquid level (30-80)%, residence time (2.5-5) hours;

[0054] (2) The second esterification stage: gauge pressure (0.5-5.0) kpa, temperature (260-285) ° C, liquid level (35-70)% unde...

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Abstract

The invention discloses a polymer substrate material, a supporting plate material for an MBR flat membrane and a preparation method of the supporting plate material, and belongs to the technical field of processing materials. The polymer substrate material provided by the invention not only has good processability, but also can be subjected to injection molding and extrusion molding; the welding performance with a filtering membrane taking PET as a base material is very good; and the price of the ABS resin is less than 55% of that of the ABS resin, so that the cost is reduced when the ABS resin is used for preparing the MBR flat sheet membrane support plate, thereby being beneficial to the vigorous popularization and application of the MBR flat sheet membrane and making a contribution to sewage treatment.

Description

technical field [0001] The invention relates to the technical field of processed materials, in particular to a polymer base material, a material used for an MBR flat film support plate and a preparation method thereof. Background technique [0002] At present, the support plate of the MBR flat membrane used for water treatment on the market is mostly made of ABS resin. The filter membrane with this plastic and PET as the base material has a good welding effect. However, although ABS resin has these advantages, when it is to be processed into 300-1000mm wide MBR boards, it can only be processed by injection molding or solid extruded boards, so that its weight is very heavy and the cost will be high. , It is not conducive to the popularization and application of MBR flat film. Contents of the invention [0003] The purpose of the present invention is to provide a kind of polymer base material, be used for MBR flat film support plate material and preparation method thereof, ...

Claims

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Application Information

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IPC IPC(8): C08G63/199C08G63/78C08L67/02C08L23/06C08K5/098C08K5/12
Inventor 不公告发明人
Owner 刘朋
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