Composite polyester fiber non-woven fabric for ultra-filtration membrane supporting layer and production method thereof

A polyester fiber and a manufacturing method technology are applied to the polyester fiber composite non-woven fabric and its manufacturing field, which can solve the problems of large pore size distribution, film leakage, poor surface smoothness and thickness uniformity, etc., and achieve uniformity. good effect

Inactive Publication Date: 2011-04-27
衡阳市恒威工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This thermally bonded polyester fiber non-woven fabric has been widely used in motors, electrical appliances, and cables as wrapping insulation, or compounded with polyester film to form a soft composite material for inter-slot insulation of motors and interlayer insulation materials of transformers. The effect is very good; as the support layer of the ultrafiltration membrane, it has the characteristics of not containing any adhesives and impurities, high porosity, good strength, solvent resistance, and good thermal stability, but it has a large pore size distribution range. When the ultrafiltration membrane is applied to its surface, there will be membrane leakage or some large leakage holes will be formed on the ultrafiltration membrane, and this thermally bonded polyester fiber non-woven fabric also has poor surface finish and thickness uniformity. Shortcomings

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Composite polyester fiber non-woven fabric for ultra-filtration membrane supporting layer and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of polyester fiber composite non-woven fabric for ultrafiltration membrane support layer, it comprises the ultrafiltration of 0.80-1dtex*38-52mm (that is 0.8 to 1 decitex, fiber length 38 to 52 millimeters) proportioning by weight 80-90 parts of fine denier polyester fibers and 10-20 parts of thermally bonded polyester fibers of 5-5.5dtex*38-52mm (that is, 5 to 5.5 dtex, fiber length 38 to 52 mm); its quantitative value is 80± 10g / m 2 , the thickness is 0.10±0.010mm, the apparent density is 0.85±0.10g / cm 3 , Quantitative unevenness CV ≤ 4%, longitudinal tension ≥ 300N / 50mm width, transverse tension ≥ 55N / 50mm width. Quantitative: Refers to the mass per unit area.

[0024] A kind of above-mentioned manufacture method of the polyester fiber composite non-woven fabric that is used for ultrafiltration membrane support layer, it comprises the steps:

[0025] 1. Selection of raw materials: Use 0.80-1dtex*38-52mm ultra-fine polyester fiber and 5-5.5dtex*38-52mm therm...

Embodiment 2

[0032] A kind of manufacture method of the polyester fiber composite non-woven fabric that is used for ultrafiltration membrane support layer, it comprises the steps:

[0033] 1. Selection of raw materials: Select 0.80-1dtex*38-52mm ultra-fine polyester fiber and 5-5.5dtex*38-52mm thermally bonded polyester fiber, proportion by weight, ultra-fine polyester fiber 80 -90 parts, heat-bonded polyester fiber 10-20 parts.

[0034] 2. Make polyester fiber non-woven fabric: make polyester fiber non-woven fabric by blending, opening, carding, hot-rolling, and winding the above-mentioned raw materials; After that, it is mechanically carded into a web, hot-rolled and bonded, and rolled to produce a weight of 20±3g / m 2 , The thickness is 0.035±0.005mm polyester fiber non-woven fabric.

[0035] 3. Hot rolling composite: take two volumes of the polyester fiber non-woven fabric obtained in the second step above, and roll it at a temperature of 225±2°C, a pressure of 4-4.5MPa, and a speed of ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a composite polyester fiber non-woven fabric for an ultra-filtration membrane supporting layer, which comprises 80 to 90 weight parts of ultrafine denier polyester fiber and 10 to 20 weight parts of thermal bonding polyester fiber, wherein the apparent density is 0.85 + / - 0.10g / cm<3>; and the quantitative unevenness CV is less than or equal to 4%. The production method ofthe composite polyester fiber non-woven fabric for the ultra-filtration membrane supporting layer comprises four steps: selecting raw materials, preparing the raw materials into the polyester fiber non-woven fabric, carrying out hot rolling composition and carrying out secondary hot rolling composition. The composite polyester fiber non-woven fabric has the advantages of good surface smoothness, compactness and integral uniformity, and strong tension resistance.

Description

technical field [0001] The invention relates to a material and a manufacturing method applied to an ultrafiltration membrane support layer, in particular to a polyester fiber composite non-woven fabric used for an ultrafiltration membrane support layer and a manufacturing method thereof. Background technique [0002] Ultrafiltration is a pressurized membrane separation technology, that is, under a certain pressure, the small molecular solute or solvent passes through a special membrane with a certain pore size, so that the large molecular solute cannot pass through and stay on one side of the membrane, so that Separation of large molecular species from small molecular solutes or solvents. The key material of ultrafiltration technology is ultrafiltration membrane, which is one of the earliest developed polymer separation membranes. The ultrafiltration device made of ultrafiltration membrane was industrialized in the 1960s. The industrial application of ultrafiltration membra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D04H1/54
Inventor 周爱国刘勇
Owner 衡阳市恒威工贸有限公司
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