Polyester short-cut fiber
poly(ethylene terephthalate)
CAS: 25038-59-9
Molecular Formula: C10H12O6
Polyester short-cut fiber - Names and Identifiers
Polyester short-cut fiber - Physico-chemical Properties
| Molecular Formula | C10H12O6 |
| Molar Mass | 228.19868 |
| Density | 1.68g/mLat 25°C |
| Melting Point | 250-255°C |
| Boling Point | >170 °C(Press: 10 Torr) |
| Appearance | pellets |
| Color | black |
| Storage Condition | Room Temperature |
Polyester short-cut fiber - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| WGK Germany | 3 |
| RTECS | TR2725000 |
| HS Code | 3921905050 |
Polyester short-cut fiber - Nature
Open Data Verified Data
is a crystalline polymer with a relative density of 1. 30~1.38, amorphous glass, the temperature is 69 deg C, the melting point of 250~265 deg C, the melt viscosity of 250 ~ 400Pa -s, long-term use temperature of 120 deg C, can be short-term use at 150 deg C. The tensile strength of the film is equivalent to that of the aluminum film, which is 9 times that of the PE film. The tear strength is not as good as that of the PE film, but higher than that of the glass paper and the acetate fiber. The light transmittance was 90%. The electrical insulation is excellent, and the electrical properties are still good at high temperature and high frequency. Good chemical resistance, at higher temperatures can also be resistant to high concentrations of hydrofluoric acid, phosphoric acid and acetic acid, etc., not alkali resistant, boiling in hot water is easy to hydrolysis.
Last Update：2024-01-02 23:10:35
Polyester short-cut fiber - Preparation Method
Open Data Verified Data
There are three methods, transesterification method, direct transesterification method and ethylene oxide method. Among them, the transesterification method is the most widely used, and its raw material dimethyl terephthalate (DMT) can be easily refined by distillation and recrystallization, and the continuous production is easier. At present, most factories in the world are still based on this method, and the latter two methods are new synthetic methods developed in recent years.
- transesterification method
- direct esterification method
- ethylene oxide method
Last Update：2022-01-01 11:09:28
Polyester short-cut fiber - Use
Open Data Verified Data
mainly used as fiber, a small amount for film and engineering plastics. Fiber is mainly used in the textile industry; Film used as electrical insulation materials, such as capacitors, cable insulation, printed circuit wiring substrate, motor slot insulation. Another large number of applications of PET Films are film-based and baseband, such as film-based, X-ray film-based, video recording base. In addition, polyester resin is also used for blow molding bottles, used to hold spices, edible oils, beverages, cosmetics and so on. PET film is also applied to vacuum aluminum plating (can also be zinc, copper, silver, etc.), made of metallized film, used as gold and silver wire, micro capacitor film and various accessories.
Last Update：2022-01-01 11:09:29
Polyester short-cut fiber - Safety
Open Data Verified Data
The product was packed in a polypropylene woven bag lined with a plastic bag with a net weight of 25kg/bag. The product should be placed in a clean and dry warehouse. Rain and mechanical damage to packaging should be avoided during transportation. This product is not dangerous goods, non-toxic, tasteless, not easy to burn.
Last Update：2022-01-01 11:09:29
Polyester short-cut fiber - Molding Process
Open Data Verified Data
PET resin due to high crystallization temperature, molding processing difficulties, the impact toughness of its products, shrinkage, generally rarely used pure resin for plastic products, mainly used to manufacture fibers and films. The production of PET film is mainly used for the plane biaxial stretching method. That is, the PET resin chip is pre-dried to prevent hydrolysis, and then the amorphous thick sheet is extruded through a T-shaped die at 280 ° C in the extruder, and quenched by cooling the drum or the cooling liquid to maintain the amorphous form, in order to stretch the orientation. The thick sheet is biaxially stretched by a tenter to form a PET film. Longitudinal stretching is to preheat the thick sheet to 86~87 ℃, and stretch about 3 times along the plane extension direction of the thick sheet at this temperature, so that the orientation can improve the crystallization to achieve higher strength, the transverse stretching preheating temperature is 98 to 100 ° C., the stretching temperature is 100 to 120 ° C., the stretching ratio is 2.5 to 4.0, and the heat setting temperature is 230 to 240 ° C. The longitudinally stretched film also needs to be heat set to eliminate the deformation of the film caused by stretching and support the film with good thermal stability.
Last Update：2022-01-01 11:09:28
Polyester short-cut fiber - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| introduction | polyethylene terephthalate resin is PET. The outer film of liquid crystal writing board is PET base film. Because of its dimensional stability and high transparency, PET polyester film has a wide range of applications in many fields and has a large market. |
| performance | PET (polyethylene terephthalate) can maintain excellent physical and mechanical properties in a wide temperature range. Its fatigue resistance, Excellent friction resistance, excellent aging resistance, outstanding electrical insulation, stable to most organic solvents and inorganic acids, low production energy consumption and good processability. Therefore, it has been widely used in plastic packaging bottles, films and synthetic fibers. |
| Preparation | Polyethylene terephthalate can be made by condensation reaction of terephthalic acid and ethylene glycol. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 19:05:07
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CAS: 25038-59-9
Tel: 0086-551-65418684
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Product List: View Catalog
CAS: 25038-59-9
Tel: 0086-551-65418684
Email: sales@tnjchem.com
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Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
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