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Dec 28, 2020
Wool is one of the earliest textile fibers used by human beings. It has many excellent characteristics, such as smooth handle, good warmth retention and comfortable wearing, but it is easy to pilling. Silicone softener is widely used in wool fabric softening finishing. It can change the friction coefficient of wool fiber and improve the pilling resistance of wool fabric. However, it has poor hydrophilicity and easy to produce static electricity, which affects the wearability. The first generation of silicone softener is mature. At present, silicone softeners have been widely used in wool fabrics, but improving the softness and hydrophilicity is the main direction of silicone development. Hydrophilic modification is beneficial to the use and storage of silicone
On the other hand, the finished fabric can also have antistatic properties. The related researches mainly focus on amino modification, polyether modification and epoxy modification.
a. Amino modification. Chen Dabin et al. 8 used octamethylcyclotetrasiloxane (D,) and N - β - aminoethyl - Y - aminopropylmethyldimethoxysiloxane (dl-103) as raw materials, alkali metal oxide as catalyst, and investigated the effects of emulsifier dosage, pH value and temperature on aminosilicone microemulsion by catalytic condensation under certain conditions, When the pH value is 4~6, an amino silicone oil JA507 emulsion with good stability and no oil bleaching is synthesized. The introduction of hydrophilic amino groups can improve the hydrophilicity and antistatic properties of fabrics, but it also brings new problems of fabric yellowing. b. Polyether modification. Organosilicon is generally insoluble in water. The introduction of water-soluble unsaturated polyether on the main chain or side chain of polysiloxane can improve the hydrophilicity of organosilicon with simple steps and no irritation to human body. The treated fabric has certain hydrophilicity and antistatic property. Ni Yaqin et al_ A polyether modified amino silicone oil was synthesized from aminoethyl-y-aminopropyltrimethoxysilane and polyoxyethylene methyl glycidyl ether by transesterification and ring opening reaction. It was used in fabric finishing to give the fabric a soft handle and improve the whiteness and water absorption of the fabric. Hydrophilic polyether modified silicone softener was formed by adjusting the ratio of polyether group and silicone segment, which can improve the emulsifying performance of the softener and reduce oil slick during storage and use.
Flannel is a kind of wool fabric made of combed wool yarn. Its surface is covered with smooth, soft, plump and fluffy fluff. It has a delicate and smooth feel. It has always been popular in the market, but it is easier to pilling than ordinary wool fabrics. This paper mainly discusses the anti pilling finishing effect of polyether silicone oil softener, modified amino silicone oil softener and amino modified silicone compound softener on flannel fabric.
Flannel is easy to pilling in the process of wearing, conventional silicone softener is lack of hydrophilic groups, easy to produce static electricity and other problems. In this paper, five kinds of modified silicone softeners, including polyether silicone oil softener, modified amino silicone oil softener with different particle sizes and low yellowing amino modified silicone compound softener, were used to finish flannel fabric. The effects of softener type and dosage on anti pilling, handle and hydrophilicity of flannel fabric were discussed. The results show that the five softeners can improve the anti pilling property of flannel fabric in varying degrees, and the effect increases with the increase of dosage. The low yellowing amino modified silicone composite softener has the best anti pilling effect, soft handle and small color change, but the five silicone softeners have not significantly improved the hydrophilicity of flannel fabric.