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Polytetrafluoroethylene and basalt composite fiber hollow ultrafiltration membrane

A basalt fiber and polytetrafluoroethylene technology is applied in the field of polytetrafluoroethylene and basalt composite fiber hollow ultrafiltration membranes, which can solve the problems of difficult wastewater treatment, resistance to strong acid and strong alkali corrosion, easy pollution and short service life, etc. Achieve good friction, good flame retardancy, smooth surface and easy cleaning effect

Pending Publication Date: 2021-08-13
徐州洁诚环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide a polytetrafluoroethylene and basalt composite fiber hollow ultrafiltration membrane to solve the existing problems of low filtration accuracy, high temperature resistance, strong acid and alkali corrosion resistance, easy pollution, short service life, and membrane cost. The problem that high and difficult wastewater cannot be treated

Method used

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  • Polytetrafluoroethylene and basalt composite fiber hollow ultrafiltration membrane
  • Polytetrafluoroethylene and basalt composite fiber hollow ultrafiltration membrane
  • Polytetrafluoroethylene and basalt composite fiber hollow ultrafiltration membrane

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Embodiment 1: The hollow ultrafiltration membrane includes: basalt fiber layer 1, polytetrafluoroethylene layer 2, micropore 3, membrane center hole 4; Vinyl fluoride layer 2; micropores 3 are densely distributed on the cylinder wall of the basalt fiber braided layer, and the joint surface of the polytetrafluoroethylene layer 2 and the basalt fiber layer 1 is composited at high temperature to form a hollow ultrafiltration membrane with a membrane center hole 4 and composite fibers.

[0037] The basalt fiber layer 1 adopts basalt fiber to weave into a cylindrical shape that is woven and laminated by a weaving machine, and is a support cylinder for a composite fiber hollow ultrafiltration membrane; the central hole of the cylinder is the central hole 5 of the membrane, and the central hole 5 of the membrane The aperture is woven according to requirements; the micropores 3 on the wall of the basalt fiber layer can isolate microorganisms, colloids and other turbid substances...

Embodiment 2

[0040] Example 2: Figure 5 Among them, the polytetrafluoroethylene layer 2 adopts a polytetrafluoroethylene film as a wide-band film, and the wide-band film is wound and wrapped on the support cylinder of the layer basalt fiber 1, and then heat-melted to make the winding and wrapping The covered gap is closed as a whole, and the micropores on the PTFE film still exist, which has a good filtering effect.

[0041] Others are the same as in Example 1.

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Abstract

The invention discloses a polytetrafluoroethylene and basalt composite fiber hollow ultrafiltration membrane, and belongs to hollow ultrafiltration membranes for sewage treatment. A basalt fiber layer of the hollow ultrafiltration membrane is cylindrical, and a polytetrafluoroethylene layer is coated outside the basalt fiber layer; micropores are densely distributed on the cylinder wall of the basalt fiber woven layer, and the combined surfaces of the polytetrafluoroethylene layer and the basalt fiber layer are compounded at high temperature to form the hollow ultrafiltration membrane with membrane center hole composite fibers; the basalt fiber layer is formed by interweaving, laminating and weaving basalt fibers into a cylinder shape through a weaving machine, and a central hole of the cylinder is a membrane central hole; microorganisms, colloids and other turbid substances in water can be isolated; and the polytetrafluoroethylene layer is made of polytetrafluoroethylene fibers which are interwoven, laminated, woven and coated outside the basalt fiber layer through a weaving machine. The polytetrafluoroethylene and basalt composite fiber hollow ultrafiltration membrane has the advantages of high cost performance, low price, no toxicity and environmental protection; and basalt and polytetrafluoroethylene are similar in melting point, high-temperature compounding is achieved, breaking strength is high, flame retardance is good, modulus is high, and high-temperature poisonous gas and dust can be efficiently filtered.

Description

technical field [0001] The invention relates to a hollow ultrafiltration membrane for sewage treatment, which is used in the technical field of sewage treatment, in particular to a polytetrafluoroethylene and basalt composite fiber hollow ultrafiltration membrane. Background technique [0002] At present, in the sewage treatment industry, ultrafiltration technology has been put into large-scale practical applications. Ultrafiltration membrane is the core component of ultrafiltration equipment. It is a widely used in wastewater purification, solution separation, and extraction of useful Substances, high-tech in the field of wastewater purification and reuse. The commonly used ultrafiltration membrane is the outer layer is the cladding layer 1-1, and its material is polyvinylidene fluoride PVDF. PVDF is a kind of fluoroplastic, which can withstand high temperature of 175 °C and has certain chemical resistance. The inner layer is a fiber braided layer. 1-2, the material is PP ...

Claims

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Application Information

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IPC IPC(8): B01D71/36B01D71/02B01D69/12B01D69/08B01D69/02B01D67/00
CPCB01D67/0079B01D69/02B01D69/08B01D69/12B01D71/02B01D71/36
Inventor 韩丰锴韩祥瑞
Owner 徐州洁诚环保科技有限公司
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