Cationic yarn is a modified polyester, chemical name: polybutylene terephthalate (elastic polyester), abbreviation: PBT, in the factory is also useful CD expressed. Because ordinary polyester (polyethylene terephthalate) has disadvantages such as low moisture absorption, poor dyeing performance, easy accumulation of static electricity, and easy fuiling, sulfonate is usually used as a modifier to modify the modified polyester that can be dyed with cationic dyes, or adding cationic active agents to prepare modified polyester before spinning or in the textile process. This kind of yarn is called cationic yarn, which does not need to be dyed at high temperature as usual polyester, and can be dyed at room temperature.

Cationic modified polyester filament is a new type of polyester product spun by introducing dimethyl iso-phthalate with polar group SO3Na into polyester chips. Its appearance is no different from that of ordinary polyester filament. However, due to the use of ion modification, not only greatly improves the color absorption performance of the fiber, but also reduces the crystallinity and makes dye molecules easy to penetrate. The fiber is easy to dye, the color absorption rate is increased, and the hygroscopicity is also improved. This fiber can not only guarantee cationic dyeing, but also increase the micropores of the fiber, improve the dyeing rate, air permeability and moisture absorption of the fiber, so as to further adapt to the imitation silk of polyester fiber.

By imitating silk, the fabric can be soft, breathable, comfortable, antistatic and dyeable at normal temperature and pressure. By cationic modification, the fabric can be made with soft feel, anti-static, anti-pilling, co-dyeing with wool at normal temperature and pressure. Fabrics woven with cationic modified fibers have the following characteristics when dyed with cationic dyes: 1. Bright color, good deep dyeing; 2. High absorption rate (high dyeing rate); 3. Good fastness to sunlight and smoke fading; 4. When matching color dyeing, the dye compatibility is good; 5. In high temperature dyeing bath, good stability; 6. Small contamination of other fibers, including ordinary polyester fibers; 7. The diffusion rate to the interior of the fiber is fast, no ring dyeing phenomenon; 8. When the pH value changes in the dyeing bath, the dye has high stability. The fabric can be compared with natural fabric in terms of wearing comfort and bright dyeing, and is lower than natural silk in price, which can produce high added value.

Although the raw material of cationic fabric is chemical fiber, it has a similar moisture absorption with pure cotton, this kind of fabric is comfortable and not bound, some sportswear and yoga clothes on the market will use cationic fabric to produce, and you can also spin 5% to 10% spandex when the fabric is produced. This can make the elasticity of the clothes maximum, and the elastic fabric generally does not leave wrinkles after friction or folding, so the cationic fabric is also very simple to take care of.

Cationic fabrics feel soft and the fabric has a two-color effect, the appearance of the fabric is very layered, and the fabric has a good dyeing and color fixing, so the cationic fabrics I see are generally colorful, in addition to the production of sportswear can also be used to produce underwear, swimwear intimate clothing.

Finally, there is the presence of polyester silk in cationic fabric, which makes the fabric have the strength and toughness of polyester, and the fabric made of it is wear resistant and stretch resistant, so cationic clothes are also very durable, and there is no special need to pay attention to in washing and care.

Cationic fabric = ordinary polyester yarn + cationic polyester yarn +2 dyeing

Advantages: (chemical properties) The fabric has bright color, corrosion resistance, alkali resistance, bleach resistance, oxidant resistance, hydrocarbons, ketones, petroleum products and inorganic acids, (physical properties) wear resistance, UV resistance, water absorption is very good, feel soft, environmental protection, wear is also very comfortable, with good elasticity and health properties, can be used to make high-grade underwear, swimwear and sportswear fabrics.

Summary: Therefore, cationic fabric is a kind of fabric name, polyester is a kind of fabric composition, polyester is a kind of yarn, after modified textile and dyeing, it has a great color fastness of clothing fabric, has a good moisture absorption and sweat effect, and is not easy to fade, soft and comfortable, suitable for sports and fitness clothing, fast delivery, and affordable.