I believe that many careful friends are When you buy a backpack or clothes, you will see some cationic fabrics on the label.
Cationic fabrics are increasingly appearing in our field of vision, and they sound very high-end. So what is cationic fabric?
In fact, cationic fabric means that there is a kind of yarn in the fabric that is specially treated cationic yarn, such as cationic polyester yarn or cationic nylon yarn. Cationic yarns are resistant to high temperatures, so during the yarn dyeing process, other yarns will be colored, but cationic yarns will not.
Cationic yarn is modified polyester, chemical name: polybutylene terephthalate (elastic polyester), abbreviation: PBT, also expressed by CD in the factory.
Because ordinary polyester (polyethylene terephthalate) has shortcomings such as low moisture absorption, poor dyeing performance, easy accumulation of static electricity, and easy fluffing. Therefore, sulfonates are usually used as modifiers to modify polyester that can be dyed with cationic dyes, or cationic active agents are added before spinning or during the spinning process to prepare modified polyester. Such yarn is called cationic yarn. This kind of yarn does not need to be dyed at high temperatures like ordinary polyester and can be dyed at room temperature.
Cationic fabrics have brighter colors and are very suitable for use as artificial fibers. However, the color fastness to water washing and light fastness of natural cellulose and protein fabrics is very poor.
The wear resistance of cationic fabrics is also very good. After adding some artificial fibers such as polyester and spandex, it has higher strength and better elasticity, and its wear resistance is second only to nylon. If the backpack is made of this cationic fabric, the wear resistance will be increased, the appearance will be better, and it will not fluff.
In addition, cationic fabrics have some chemical properties, such as resistance to corrosion, dilute alkali, bleach, oxidants, hydrocarbons, ketones, petroleum products and inorganic acids, as well as some physical properties, such as resistance to ultraviolet rays. .
Generally speaking, cationic fabrics have the characteristics of soft hand feel, not easy to fade, anti-wrinkle and wear-resistant.
