To make fiber has soft, smooth, comfortable feel, need to undertake finishing to its, at present widely used is to undertake finishing with softener.
Softener is the agent that can make the fiber soft after washing and drying. There are three main types, namely non-surfactant, surfactant and the mixture of surfactant and non-surfactant.
Softener formula:
Cationic softener is the most widely used one, which can be divided into quaternary ammonium salt, fatty acid ester, right wax, polyethylene, silicone resin and so on. Other softeners are silicone softener, film softener (fat salt), double eighteen alkyl dimethyl ammonium chloride (softener D1812), ester quaternary ammonium salt, Gemini cationic softener, etc.
1, organic silicon
This kind of softener smooth effect is better, the biggest malpractice is price is expensive, cost is higher, when using, reach easy cause wave oil. Not suitable for long-term development in the increasingly competitive modern industry;
2, film class
This kind mainly is given priority to with fatty acid salt, use more convenient, but this kind of softener film dosage is large, the cost is correspondingly higher. It is not suitable for the demand of reducing comprehensive cost and improving industrial profit;
3, D1821
That is, dieighteen alkyl dimethyl ammonium chloride, the biggest disadvantage of this kind of softener is poor biodegradability and serious yellowing; With the improvement of public awareness, environmental quality requirements, such products can not meet the needs of social development;
4, ester quaternary ammonium salt
This kind of softener has stable softness, small dosage, outstanding biodegradability, green environmental protection, and has anti-yellowing, sterilization and other functions. It can be said that this kind of softener products will be a leading trend of softener industry in the future.
5, Gemini cation softener
Special structure of cationic Gemini surfactants, Yang took the special structure in order to gather the head in the process of separating force, greatly improve the surface activity, at the same time the product with conventional single and double alkyl ammonium alkyl quarterly quarterly ammonium salt compared with very low critical micelle concentration, thus the achieve the same effect under the condition of consumption greatly reduced. Widely used as high efficiency softener, antistatic agent swelling agent, fungicide, single quarter ammonium salt cationic surfactant synergist.