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Hydrophilic non-woven fabric is an environmentally friendly textile fabrics. It is opposite to the water repellent nonwoven fabric. The hydrophilic nonwoven fabric is obtained by adding a hydrophilic agent to the production process of the nonwoven fabric, or adding the hydrophilic agent to the fiber in the course of the fiber production, and then producing the nonwoven fabric which is the legendary hydrophilic nonwoven fabric.
May know that many people, but give it a few products you know, we often see the adult or baby with urine is not wet, home life necessary rags, ladies with sanitary napkins, etc., are Is made by it, hydrophilic non-woven fabric has a strong liquid adsorption, harmless to the human body, convenient and practical!
Why is it necessary to add a hydrophilic agent? This is because the fiber or non-woven fabric is a high molecular polymer, its own hydrophilic group is small, or no hydrophilic groups, can not achieve the necessary non-woven applications in the hydrophilic properties , Thereby adding a hydrophilic agent to increase its hydrophilic group.
Then someone will ask what is a hydrophilic agent? It can make the surface tension drop rapidly. Mostly long chain organic compounds, molecules in the presence of hydrophilic groups and lipophilic groups. The purpose of the addition of the hydrophilic agent is that the fiber or nonwoven fabric is a high molecular polymer having less hydrophilic groups or no hydrophilic groups and can not achieve the desired hydrophilic properties in the nonwoven application and thus Hydrophilic agent.
1, the types of surfactants: ionic (anionic, cationic and amphoteric) surfactants and nonionic surfactants.
2, nonionic surfactants: polysorbate (Tween) -20, -40, 60, 80, sorbitan monolaurate (Span) -20,40,60,80, poly Oxyethylene lauryl alcohol (sold Ze Myrj) -45,52,30,35, emulsifier OP (nonylphenol polyoxyethylene ether condensate), milk Braun A (polyoxyethylene fatty alcohol ether), West (Polyoxyethylene and cetyl alcohol adduct), Pu Luluo Ni (polyoxyethylene polypropylene glycol condensate), glycerol monooleate and glyceryl monostearate.
3, anionic surfactants: soft soap (potassium soap), hard soap (sodium soap), aluminum monostearate, calcium stearate, triethanolamine oleate, sodium lauryl sulfate, whale hard sodium sulfate, sulfated Castor oil, sodium dioctyl succinate, and the like.
4, cationic surfactants: benzalkonium bromide, benzalkonium bromide, benzalkonium chloride, benzethonium chloride, bromide hexadecane and so on; almost all disinfectant.
5, amphoteric surfactants: less; also for the disinfectant preservatives.
This hydrophilic non-woven fabric is made of ordinary polypropylene spunbond non-woven fabric by hydrophilic treatment, with good hydrophilicity and permeability. Mainly used in health products, such as urine is not wet, diapers, sanitary napkins surface layer, can quickly penetrate to keep dry and comfortable. Can be said that in our lives, but it is very common!