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Preparation method and preparation device for enhanced hollow fiber composite film

A fiber composite and reinforced technology, which is applied in the field of preparation of reinforced hollow fiber composite membranes, can solve the problems of high manufacturing cost, complex process and high density of supporting tubes, etc. Strength-enhancing effect

Active Publication Date: 2013-04-03
BEIJING ORIGIN WATER FILM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the weaving of the support tube, since the casting solution coated on the surface of the support tube cannot penetrate into the inside of the support tube, the density of the braided support tube is high, and the production process is divided into two steps. The process is complicated. The reinforced hollow fiber prepared in this way Membranes are expensive to manufacture

Method used

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  • Preparation method and preparation device for enhanced hollow fiber composite film
  • Preparation method and preparation device for enhanced hollow fiber composite film
  • Preparation method and preparation device for enhanced hollow fiber composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A fiber composite reinforced hollow fiber composite membrane, which is mixed according to the weight ratio of polyvinylidene fluoride resin, polyvinyl chloride resin, dimethylformamide, polyvinylpyrrolidone and polyethylene glycol in a weight ratio of 6:14:70:1:9 The ingredients are stirred at about 65°C to form a homogeneous solution, and then degassed for 6 hours with a negative pressure of 0.1MPa. The casting solution made after degassing is placed in the spinning kettle 9, and then, the fibers are prepared according to the following method Composite reinforced hollow fiber composite membrane:

[0037] (1) Lead out two polyester fibers from the wire reel 12, and then carry out pretreatment through the solvent tank 13, so that the oil in the polyester fibers can be washed, so that the fine fibers can be dispersed;

[0038] (2) Pass the polyester fiber through the tension control device 14, and then pass the polyester fiber through the corresponding needle tube on the ...

Embodiment 2

[0056] A fiber composite reinforced hollow fiber composite membrane, which is mixed according to the weight ratio of polyvinylidene fluoride resin, polyvinyl chloride resin, dimethylformamide, polyvinylpyrrolidone and polyethylene glycol at a weight ratio of 1:16:70:12:1 The ingredients were stirred at 65°C to form a homogeneous solution, and then degassed for 6 hours with a negative pressure of 0.1MPa. The casting solution made after degassing was placed in the spinning kettle 9, and then, the fiber composite reinforcement was prepared according to the following method Type hollow fiber composite membrane:

[0057] (1) Lead out 4 aramid fibers from the coil 12, and then pre-treat them through the solvent tank 13 to clean the oil in the aramid fibers;

[0058] (2) passing the aramid fiber through the tension control device 14, and then passing the aramid fiber through the corresponding needle tube on the spinneret 16;

[0059] (3) Then the aramid fiber enters the 1# gel tank ...

Embodiment 3

[0069] A fiber composite reinforced hollow fiber composite membrane, according to the weight ratio of polyvinylidene fluoride resin, polyethersulfone, dimethylformamide, polyvinylpyrrolidone, polyethylene glycol and lithium chloride 16:3:70:2: Mix ingredients at 8:1, stir at 70°C to form a homogeneous solution, then use a negative pressure of 0.1MPa to defoam for 12 hours, and place the casting solution after defoaming in the spinning kettle 9, and then follow the following method Preparation of fiber composite reinforced hollow fiber composite membrane:

[0070] (1) Lead out 3 polyester fibers from the wire reel 12, and then pre-treat them through the solvent tank 13 to make the oil in the polyester fibers fine and clear, so that the fine fibers can be dispersed;

[0071] (2) Pass the polyester fiber through the tension control device 14, and then pass the aramid fiber through the corresponding needle tube on the spinneret 16;

[0072] (3) Then, the polyester fiber enters th...

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Abstract

The invention discloses a preparation method and a preparation device for an enhanced hollow fiber composite film. The preparation device comprises a spinning kettle, wherein moulding liquid in the spinning kettle enters a spinneret through a spinning pump and a filter; long fiber enters into the spinneret through a tension control device after being led out from a wire coil; core liquid in a core liquid tank is sprayed out after entering the spinneret; and the formed enhanced hollow fiber composite film is coiled onto a wire collecting wheel after gelling in a gelling tank. As the fiber compounded enhanced hollow fiber composite film is added with fiber, on one hand, the strength of the hollow fiber composite film is improved, and the aeration rate can be enlarged in an operation process, so as to reduce the pollution of the film; and on the other hand, the film can be backwashed with a cleaning agent.

Description

technical field [0001] The invention relates to the technical field of sewage purification treatment, in particular, the invention relates to a preparation method and device of a reinforced hollow fiber composite membrane. Background technique [0002] As a form of membrane, hollow fiber membrane has good compression resistance and does not require support. The membrane module can be of any size and shape. The membrane module has high packing density, large membrane area per unit volume, and large flux. And other advantages, it has been widely used in domestic sewage treatment, reclaimed water reuse, medicine and chemical industry and other fields. However, in order to maintain the flux of the membrane and reduce the fouling of the membrane, measures such as turbulent aeration, intermittent water discharge and air aeration are often used in engineering operation, so that the hollow fiber membrane is constantly swinging during use. The fiber membrane is easy to break due to ...

Claims

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Application Information

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IPC IPC(8): B01D69/12B01D67/00
Inventor 李锁定代攀陈亦力文剑平孟莎莎邱小秦
Owner BEIJING ORIGIN WATER FILM TECH
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