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GUANGZHOU JUNQIAN NONWOVEN CO., LTD.
FOSHAN GUIDE TEXTILE CO., LTD.
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Tel:+86-757-85700009、+86-757-85700020

How to improve the hydrophilicity of non-woven fabrics?

Home > News > Product knowledge  > How to improve the hydrophilicity of non-woven fabrics?

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Foshan Guide Textile Co., Ltd.

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How to improve the hydrophilicity of non-woven fabrics?

2019-03-19 09:53:23
Improving the hydrophilic properties ofnonwoven fabrics and fibers can be carried out by physical and chemical methods, and can be summarized as follows.

(1) Modification of raw silk. That is, a hydrophilic substance such as polyethylene glycol or a sulfonic acid group-containing substance is added to the spinning solution to improve the hydrophilicity ofthe fiber, but this method affects other properties of the fiber, such asweakening the crystallization of the polymer. Ability to reduce its meltingpoint and affect the physical and mechanical properties of the fiber.

(2) Surface graft modification. The introduction of hydrophilic groups by high-energy radiation, electron beamradiation or chemical agents increases hydrophilicity.

(3) Change the physical structure of the surface or interior of the fiber. If the fiber morphology is changed, the fiberstructure is microfibrillated, and there are many micropores that penetratein side and outside like natural fibers such as cotton and wool.

The phenomenon absorbs water; it can also make the cross section of the fiber profiled or roughened. This method can onlyimprove the water absorption of the fiber, and the hygroscopicity of the fibercannot be improved.

(4) Hydrophilic finishing. The hydrophilic(Polypropylene Non Woven Fabric Supplier) agent is coated on the surface of the fiber to form a hydrophilic film toimprove its hydrophilic property, and the hydrophilic film has a certain conductivity, which can improve the antistatic property of the material. The method is simple and easy to operate, the principle is relatively mature, andthe application range is wide, but at present, there are few hydrophilic finishing agents with high washing performance.

Polypropylene Non Woven Fabric Supplier, Hydrophilic Non Woven Fabric Wholesale, Pp Non Woven Fabric ManufacturerPolypropylene Non Woven Fabric Supplier, Hydrophilic Non Woven Fabric Wholesale, Pp Non Woven Fabric Manufacturer

(5) Plasma treatment. The plasma is a fullyor partially ionized gas. The gas is ionized by the electric field force, andthe fiber is surface treated by the high energy state of the gas.

The surface layer of the rear fiber forms acrosslinked structure or provides a stable free radical. The surface of thisstate will oxidize in the air, and the radical will eventually form a groupsuch as -OH, -COOH, etc.

The wetting properties of the fibers arealtered to increase the hydrophilic properties of the fibers. At present, alaboratory in the UK has tested a steady state glow discharge plasma reactorusing CO2, H2, O2.

At room temperature, the hydrocarbon groupof polypropylene(Hydrophilic Non Woven Fabric Wholesale) is converted into a polar group such as a carbonyl group, acarboxyl group or a hydroxyl group, which significantly improves thehydrophilicity of the material, and the entire chemical reaction isirreversible, and the hygroscopicity is more durable.

In the above method, the hydrophilic(PP Non Woven Fabric Manufacturer) finishing has the characteristics of simple method, low cost and remark ableeconomic benefit, and can increase the hygroscopicity and water absorption ofthe fiber while maintaining the original characteristics of the fiber.

It has become the most common method of application. Of course, hydrophilic finishing has the problem of poor durability,and the disposable nonwoven fabric has low durability requirements, and research and development resistance for durable nonwoven fabrics.

Long-lasting finishes are key. After hydrophilic finishing, the hydrophilicity and comfort of the non-woven fabricare obviously improved, and the antistatic property, softness and stainresistance are also improved.