When purchasing, some materials often attract the attention of some friends, such as polyester and polyester fiber. Friends who are familiar with it will say that they are the same material. Friends who are not aware of it wonder why the same material is different. The name?
Is there any difference between polyester and polyester fiber? 01Divided according to name
Polyester fiber is an internationally common name, mainly famous for its earliest production name, and now it has become an internationally common name;
Polyester is the Chinese name for polyester fiber in China.
From this point it is clear that there is no difference between them.
Introduction to polyester
Usually refers to a polymer compound obtained by the condensation of dibasic acid and glycol, including fibers composed of linear macromolecules containing more than 85% of terephthalate glycol ester in all molecular chains.
There are many varieties of polyester fibers. Three types are given in GB/T4146.1-2009, namely polyethylene terephthalate (PET) fiber, polybutylene terephthalate (PBT) fiber and Polytrimethylene terephthalate (PTT) fiber. Among them, the trade name of PET fiber in my country is polyester. It can be seen that polyester is only a type of polyester fiber. Due to its easy availability of raw materials and excellent performance, polyester has become the fiber with the largest output and the most widely used among chemical fibers. It is precisely because of this that people mistakenly think that polyester fiber is polyester. However, in recent years, with the With the improvement of fiber production technology, polyester fiber has added two new members, PBT and PTT.
PTT fiber has the characteristics of both polyester and nylon. It is easy to wash, quick-drying, has good elastic recovery, and has good wear resistance and stretch recovery. It is more suitable for making composite fibers, elastic fabrics, carpets and other materials. In addition to the advantages of polyester, PBT fiber also has better dyeing properties and has become one of the promising differentiated fibers in the field of synthetic fibers. In addition, it also has good aging resistance, chemical reactivity resistance and heat resistance. properties, making it widely used in engineering plastics, home appliance casings and other fields. The emergence of these two new types of polyester fibers not only breaks the dominance of polyester fiber, but may even replace it to a certain extent.
With the emergence of PTT fiber and PBT fiber, polyester fiber is no longer exclusive to polyester. However, in actual detection, since these three types of fibers are difficult to distinguish through ordinary methods, theoretically, they can be identified through a combination of infrared spectroscopy and melting point methods, but there are also difficulties in the identification process. Therefore, according to the standard GB/T 4146.1-2009, a “polyester fiber” report will generally be issued, only if the client explicitly requests it and the sample can be determined to be “polyethylene terephthalate (PET)” , only the testing agency can classify it as “polyester”.
Introduction to polyester
Polyester (also commonly known as “Chenliang”). Polyester is the simplest of the three major synthetic fibers and its price is relatively cheap. In addition, it is strong and durable, has good elasticity, is not easily deformed, is corrosion-resistant, insulating, crisp, easy to wash and quick-drying, etc., and is loved by people.
Polyester is the most important synthetic fiber variety among textile fiber raw materials. It is made of terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (EG) as raw materials through esterification or transesterification and Polyethylene terephthalate (PET), a polymer obtained by polycondensation reaction, is a fiber made by spinning and post-processing.
It is generally produced by melt spinning method, and the morphological structure observed under the microscope has a circular cross-section and no special longitudinal structure.
Special-shaped fibers (non-circular cross-section) can change elasticity, giving them special luster and bulk, improving cohesion and coverage, anti-pilling, and reducing static electricity. For example, triangular fibers have a flash effect; pentacle-shaped fibers are shiny, feel good, and resist pilling; hollow fibers have low density and good warmth retention due to the cavity inside.
Advantages and disadvantages of polyester:
1. high strength. The strength of short fiber is 2.6-5.7cN/dtex, and the strength of high-strength fiber is 5.6-8.0cN/dtex.
2. Good elasticity. The elasticity is close to that of wool. When stretched by 5% to 6%, it can almost completely recover. The wrinkle resistance is better than other fibers, that is, the fabric does not wrinkle and has good dimensional stability.
3． Heat resistance. Polyester has a relatively high melting point and the best heat resistance among synthetic fabrics.
4． Good thermoplasticity but poor melt resistance. It is thermoplastic and can be used to make pleated skirts for a long time, but it has poor melt resistance and can easily form holes when exposed to soot, sparks, etc. When wearing, avoid contact with cigarette butts, sparks, etc.
5. Good wear resistance. Second only to nylon among synthetic fibers.
6． Good light fastness. Second only to acrylic fiber among synthetic fibers.
7. preservative. Resistant to bleach, oxidants, hydrocarbons, ketones, petroleum products and inorganic acids. Resistant to dilute alkali and not afraid of mold, but hot alkali can cause it to decompose. It also has strong acid and alkali resistance.��, UV resistance.
8. Good color fastness and not easy to fade.
9. It has poor hygroscopicity and feels stuffy when worn. It is also easily charged with static electricity, easily stained with dust, and prone to fluffing and pilling.
10. It is quick-drying and has good washability and wearability.
Polyester type
1. Polyester imitation silk fabric, a polyester fabric with a silk appearance style woven from polyester filament or short fiber yarns with round and special-shaped cross-sections. It is wrinkle-resistant and does not need to be ironed. It is very popular among consumers. These varieties have the elegant drape, smoothness, softness and pleasingness of silk fabrics. At the same time, they have the stiffness, wear resistance, easy washing and ironing-free of polyester fabrics. They are also low in price. The only drawback is that this type of fabric has poor moisture absorption and breathability, making it difficult to wear. Not too cool.
2. Polyester wool-like fabrics are made of polyester filaments such as polyester elastic yarn, polyester network yarn or polyester yarn with various special-shaped cross-sections, or blended with medium-length polyester short fiber and medium-length viscose or medium-length acrylic fiber The woolen-style fabrics woven into the yarn are called worsted wool-like fabrics and mid-length wool-like fabrics respectively, and their prices are lower than similar wool fabric products. It not only has the characteristics of wool, which is plump and fluffy, and has good elasticity, but also has the characteristics of polyester, which is durable, easy to wash and dry quickly, flat and crisp, not easy to deform, not easy to fluff, not easy to pilling, etc.
3. Polyester linen-like fabric is made of polyester or polyester/viscose strong twisted yarn and is woven into plain or raised weave fabric, which has the dry feel and appearance of linen fabric. Not only does it look rough and feel dry, it is also comfortable and cool to wear. Therefore, it is very suitable for the production of summer shirts and skirts.
4. Polyester cotton-like fabric has a soft and fluffy feel similar to cotton and is hydrophilic and moisture-absorbent. It also has the wear-resistance, high strength, easy washing, and no ironing of polyester fabrics, and is low in price. Currently used in bedding, T-shirts, towels, etc.
5. Polyester blended fabrics. In addition to pure polyester fabrics, there are also many products blended or interwoven with various textile fibers, which make up for the shortcomings of pure polyester fabrics and provide better wear performance.
The above briefly analyzes polyester and polyester fibers and understands their differences. It can be seen that there is no difference in terms of materials. The only difference is the different names. I hope you will no longer be influenced by the names when purchasing. You can choose the right products according to your needs.
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