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Antibacterial, breathable and waterproof tubular membrane and preparation method thereof

A tubular membrane and bamboo fiber technology, applied in the field of water treatment, can solve problems such as water ingress, and achieve the effects of increasing cross-linking density, improving waterproofness and corrosion resistance, and improving tensile strength

Pending Publication Date: 2021-12-10
波塞冬(江苏)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an antibacterial breathable and water-impermeable tubular membrane and its preparation method to improve the actual use effect of the membrane aeration bioreactor, antibacterial, long service life, good waterproof effect, and solve the problem of membrane leakage under high water pressure. water problem

Method used

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Examples

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preparation example Construction

[0023] The invention provides a technical solution: an antibacterial breathable and water-impermeable tubular membrane and a preparation method thereof, comprising the following components by weight: 5-10 parts of bamboo fiber, 2-7 parts of cationic polyacrylamide, 2-8 parts of polyethylene, poly 3-6 parts of sodium polyphosphate, 0.05-0.5 parts of hot melt adhesive.

[0024] A method for preparing an antibacterial breathable and water-impermeable tubular membrane, comprising the following specific steps:

[0025] Step 1: Take the dried bamboo, crush it, add a dissolving agent, oscillate ultrasonically for 1-10 minutes, and let it rest for 0.5-2 hours to dissolve;

[0026] Step 2: recover the dissolving agent by suction filtration, and dry the bamboo fiber at 40-60°C to constant weight;

[0027] Step 3: Weighing each raw material according to parts by weight, mixing bamboo fiber, cationic polyacrylamide, polyethylene, sodium polyphosphate, and water through a mixer, and radia...

Embodiment 1

[0035] An antibacterial breathable and water-impermeable tubular membrane and a preparation method thereof, comprising the following components by weight: 8 parts of bamboo fiber, 2 parts of cationic polyacrylamide, 3 parts of polyethylene, 3 parts of sodium polyphosphate, and 0.1 part of hot melt adhesive.

[0036] A method for preparing an antibacterial breathable and water-impermeable tubular membrane, comprising the following specific steps:

[0037] Step 1: Take the dried bamboo, crush it, add a dissolving agent, oscillate ultrasonically for 8 minutes, and let it rest for 1.6 hours to dissolve;

[0038] Step 2: recover the dissolving agent by suction filtration, and dry the bamboo fiber at 60°C to constant weight;

[0039] Step 3: Weighing each raw material in parts by weight, mixing bamboo fiber, cationic polyacrylamide, polyethylene, sodium polyphosphate, and water through a mixer, and radiating light for 35 minutes;

[0040] Step 4: Dry the mixture processed in Step 3...

Embodiment 2

[0047] An antibacterial air-permeable and water-impermeable tubular membrane and a preparation method thereof, comprising the following components by weight: 10 parts of bamboo fiber, 3 parts of cationic polyacrylamide, 3 parts of polyethylene, 3 parts of sodium polyphosphate, and 0.08 part of hot melt adhesive.

[0048] A method for preparing an antibacterial breathable and water-impermeable tubular membrane, comprising the following specific steps:

[0049] Step 1: Take the dried bamboo, crush it, add a dissolving agent, oscillate ultrasonically for 5 minutes, and let it rest for 2 hours to dissolve;

[0050] Step 2: recover the dissolving agent by suction filtration, and dry the bamboo fiber at 60°C to constant weight;

[0051] Step 3: Weighing each raw material according to parts by weight, mixing bamboo fiber, cationic polyacrylamide, polyethylene, sodium polyphosphate, and water through a mixer, and radiating light for 30 minutes;

[0052] Step 4: Dry the mixture proces...

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Abstract

The invention discloses an antibacterial, breathable and waterproof tubular membrane and a preparation method thereof. The antibacterial, breathable and waterproof tubular membrane comprises bamboo fibers, cationic polyacrylamide, polyethylene, sodium polyphosphate and a hot melt adhesive. According to the invention, cationic polyacrylamide and bamboo fibers are linked through hydrogen bonds to form a bridge; sodium polyphosphate and cationic polyacrylamide are cross-linked through the intermolecular electrostatic attraction effect to improve the tensile strength, and meanwhile, a small amount of polyacrylamide-bamboo fiber nanoparticles are formed, and the strength and toughness of the tubular membrane are improved; and then, polyethylene is grafted on polyacrylamide through an ultraviolet grafting method, so that the polyacrylamide and the bamboo fibers are combined into a whole. When the external pressure of the tubular membrane is greater than the internal pressure, water permeates into the tubular membrane, and sodium polyphosphate adsorbs water and expands to block gaps of the tubular membrane, so that water is prevented from entering the tubular membrane, and the sodium polyphosphate and polyethylene cooperate to prevent water. The tubular membrane is prepared by extruding, melting and processing by using double screws and stretching, conforming and coiling, so that the process steps are saved, the energy is saved, and no wastewater is generated.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an antibacterial, air-permeable and water-impermeable tubular membrane and a preparation method thereof. Background technique [0002] With the continuous improvement of China's urbanization and industrialization, water consumption is increasing, and the amount of sewage generated is also increasing. The state has also put forward higher requirements for pollution discharge standards and supervision, which will increase operating costs. [0003] Membrane aerated biofilm reactor (MABR) systems typically utilize microorganisms to remove organic pollutants present in the water to be treated. In some membrane aerated biofilm reactor systems, biofilms grow on gas permeable membranes by providing oxygen and soluble organic compounds to the biofilm. The use of membrane aerated biofilm reactor reduces the amount of aeration and greatly saves energy, and the core key technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J3/24C08L97/02C08L33/26C08L23/06C08K3/32B29D7/01
CPCC08J5/18C08J3/246B29D7/01C08J2397/02C08J2433/26C08J2423/06C08K2003/324Y02P20/10
Inventor 李遥杨永强倪腾亚杨俊雅韩路军杨娜
Owner 波塞冬(江苏)新材料科技有限公司
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