Difference between revisions of "Polyester"
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Polyesters are polymers (chains) that contain ester groups in their repeating structure. The most common form is polyethylene terephthalate (PET). | Polyesters are polymers (chains) that contain ester groups in their repeating structure. The most common form is polyethylene terephthalate (PET). | ||
| − | Polyethylene terephthalate is produced from [[ethylene]] glycol and dimethyl terephthalate (DMT) (C6H4(CO2CH3)2) or terephthalic acid. | + | *Polyethylene terephthalate is produced from [[ethylene]] glycol and dimethyl terephthalate (DMT) (C6H4(CO2CH3)2) or terephthalic acid. |
| + | *Ethylene glycol is a primary chemical feedstock and is very likely to be produced on Mars fairly soon in the development of a settlement. | ||
===Properties=== | ===Properties=== | ||
| − | Embodied energy: about 125 MJ/kg. | + | *Embodied energy: about 125 MJ/kg. |
| − | + | *Density: 1370 kg/m3 | |
| − | Density: 1370 kg/m3 | + | *Melting point: 115–135 °C |
| − | + | *Strength: 2,5 MPa (360 psi) | |
| − | Melting point: 115–135 °C | ||
| − | |||
| − | Strength: 2,5 MPa (360 psi) | ||
{{stub}} | {{stub}} | ||
Latest revision as of 06:55, 9 November 2023
Polyester (PET) is an organic material, a polymer plastic that is commonly used as a fiber for cloth production, or a matrix for glass fibers in Fiberglass
In situ Production
Polyesters are polymers (chains) that contain ester groups in their repeating structure. The most common form is polyethylene terephthalate (PET).
- Polyethylene terephthalate is produced from ethylene glycol and dimethyl terephthalate (DMT) (C6H4(CO2CH3)2) or terephthalic acid.
- Ethylene glycol is a primary chemical feedstock and is very likely to be produced on Mars fairly soon in the development of a settlement.
Properties
- Embodied energy: about 125 MJ/kg.
- Density: 1370 kg/m3
- Melting point: 115–135 °C
- Strength: 2,5 MPa (360 psi)
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