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Cross non woven fabric/ Cambrella Fabric

How to improve the hydrophilic nonwoven can

by:Sunshine     2020-09-25
Can improve the non-woven fabric and fiber hydrophilic by physical and chemical methods, sums up the following several. ( 1) The original silk modification. Is added in the dope hydrophilic substance such as polyethylene glycol (peg), containing sulfonic group, etc. , so as to improve the hydrophilicity of the fiber, but this method will affect the other performance of the fiber, such as weakening the polymer crystallization ability, reduce the melting point, the impact on physical and mechanical properties of fiber and so on. ( 2) Surface graft modification. Using high-energy radiation, electron beam radiation or chemicals cause access hydrophilic group, increase the hydrophilicity. ( 3) Change the fiber surface or internal physical structure. Such as change the fiber morphological structure, make the micro fibrillating fiber structure, like cotton, wool and other natural fiber has many inside and outside of pores and using capillarity suction; Still can make heteromorphosis fiber cross section or surface roughness. This method can only improve fiber absorbent, the hygroscopicity of the fiber is not improved. ( 4) Hydrophilic finishing. Will close water cover on the fiber surface, make it a layer of water film formation, can improve its hydrophilicity, and hydrophilic membrane has a certain electrical conductivity, can improve the antistatic property of the material. Principle of this method is simple, is more mature, the application range is very wide, but the current washes with high performance of hydrophilic finishing agent is less. ( 5) Plasma processing. Plasma is a kind of all or part of the ionization of gas, gas under the effect of electric field force obtained by ionization energy, the use of the high energy gas was carried out on the fiber surface treatment after the fiber surface to form crosslinked structure, or provide a stable free radical, the surface of this state will be up in the air oxidation reaction, and the free radicals generated eventually - OH、— COOH groups, such as change of the fiber wettability, in order to improve fiber hydrophilic [ 2] 。 Now a British laboratory has tested a stable state of glow discharge plasma reactor, using CO2, H2 and O2 at room temperature the polypropylene hydrocarbon into carbonyl and carboxyl, hydroxyl and other polar group, significantly improve the hydrophilicity of material, the chemical reaction is irreversible, and hygroscopicity is more durable. The above method, the hydrophilic finishing method is simple, low cost and remarkable economic benefit to fiber in basic original features increase fiber under the condition of moisture absorption and water imbibition, thus become the most popular a kind of method. Hydrophilic finishing, of course, the problem of poor durability, use disposable non-woven fabrics for durability requirements is not high, for durable type of non-woven fabric, the finishing agent of durability research and development is the key. Arrangement, hydrophilic nonwoven hydrophilic, comfort, and antistatic property, softness and fouling resistance are also improved.
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