Fill the advantages of wool, increase the Angora mixed yarn wrinkle resistance of wool products, and make wool products not easy to deform. Wool prod...
Fill the advantages of wool, increase the Angora mixed yarn
wrinkle resistance of wool products, and make wool products not easy to deform. Wool products have large felting shrinkage. The biggest advantage of polyester fiber is that it has good wrinkle resistance and shape retention, high strength and elastic recovery ability, and it is durable, wrinkle-resistant, non-ironing, and non-sticky commonly known as "polyester".
The specific gravity of polyester is the melting point is 255-260°C, it starts to bond at 205°C, and the safe ironing temperature is 135°C. Polyester has excellent wrinkle resistance, elasticity and dimensional stability, good electrical insulation properties, resistance to sunlight, abrasion, mildew and moth, good resistance to chemical reagents, and resistance to weak acids and alkalis.Polyester staple fiber is divided into cotton type staple fiber length 38mm and wool type staple fiber length 56mm, which are respectively used for blending with cotton fiber and wool. Wool is a slender solid cylinder with a curled shape.
The fiber structure is divided into three layers, namely the scale layer, the cortex layer and the medulla layer. The main component of wool is keratin, which is composed of a variety of α-amino acid residues. The latter can be linked into spiral-shaped long-chain molecules with carboxyl groups, amine groups and hydroxyl groups, which form salt bonds and Hydrogen bond and so on.The long chains are connected by cross bonds formed by the disulfide bonds of cystine. The above chemical structure determines the characteristics of wool.
For example, when the long chain of wool fiber macromolecules is stretched by an external force, it transitions from α-type spiral to type stretched type, and then returns to α-type after the external force is relieved, the appearance of wool is characterized by excellent elongation and elasticity of wool.The strong moisture absorption capacity of wool is related to some groups on the side chain. Wool is more acid-resistant but not alkali-resistant, because alkali easily decomposes the disulfide group in wool cystine, which damages the hair. Oxidants can also destroy disulfide groups and damage wool. Wool is more resistant to acids but not alkalis.