Polyethylene - Revision history

Michel Lamontagne: /* In situ Production */

2024-09-04T14:56:59Z

In situ Production

2023-05-15T19:43:40Z

Properties

2023-05-15T19:42:42Z

Properties

2022-02-24T15:02:13Z

2022-01-19T15:50:14Z

Use

2022-01-19T15:48:49Z

Properties

2021-05-26T18:26:59Z

In situ Production

2021-05-26T18:26:09Z

Synthesis

2021-05-26T18:23:13Z

Synthesis

2020-11-28T19:52:27Z

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 __NOTOC__
-Polyethylene (PE) is produced in industrial quantities from [[ethylene]] through the use of [[catalyst|catalysts]]. Common catalysts include chromium trioxide and metallocene.
+Polyethylene (PE) is produced in industrial quantities from [[ethylene]] through the use of [[catalyst|catalysts]]. Common catalysts include chromium trioxide and metallocene.  The catalysts might initially come from Earth, and eventually be produced in-situ themselves as demand rises.
 ==Properties==

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 *Melting point: 115–135 °C
 *Strength:
-**LDPE: 7 MPa (1000 psi)
+**Low density Polyethylene(LDPE): 7 MPa (1000 psi)
-**HDPE: 20 MPa (2900 psi)
+**High Density Polyethylene(HDPE): 20 MPa (2900 psi)
 ==Use==

@@ Line 8: / Line 8: @@
 ==Properties==
-Embodied energy: about 100 MJ/kg, depending on the variety.
+*Embodied energy: about 100 MJ/kg, depending on the variety.
+*Density: 880–960 kg/m3
-Density: 880–960 kg/m3
+*Melting point: 115–135 °C
+*Strength:
-Melting point: 115–135 °C
+**LDPE: 7 MPa (1000 psi)
+**HDPE: 20 MPa (2900 psi)
 ==Use==

@@ Line 5: / Line 5: @@
 __NOTOC__
-Polyethylene is produced in industrial quantities from [[ethylene]] through the use of [[catalyst|catalysts]]. Common catalysts include chromium trioxide and metallocene.
+Polyethylene (PE) is produced in industrial quantities from [[ethylene]] through the use of [[catalyst|catalysts]]. Common catalysts include chromium trioxide and metallocene.
 ==Properties==

@@ Line 18: / Line 18: @@
 ==Use==
 Polyethylene is used widely on [[Earth]], and will likely have many applications in a Martian [[settlement]].
 ==References==

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-'''Polyethylene''' is a [[polymer]] of [[ethylene]]. It is non-toxic and easily [[recycling|recycled]].
+[[File:Polyethylene repeat unit.svg|thumb|200x200px|Polyethylene molecule]]
-==Synthesis==
+==[[In-situ resource utilization|In situ Production]]==
 __NOTOC__
-== Properties ==
+Polyethylene is produced in industrial quantities through the use of [[catalyst|catalysts]]. Common catalysts include chromium trioxide and metallocene.  Polyethylene can be produced [[In-situ resource utilization|in-situ]] using [[Ethylene]] as feedstock.
 Density:
@@ Line 13: / Line 17: @@
 ==Use==
-Polyethylene is used widely on [[Earth]], and will likely have many applications in a martian [[settlement]].
+Polyethylene is used widely on [[Earth]], and will likely have many applications in a Martian [[settlement]].
 ==References==

← Older revision		Revision as of 18:23, 26 May 2021
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	==Synthesis==		==Synthesis==
		+	__NOTOC__
	Polyethylene is produced in industrial quantities through the use of [[catalyst\|catalysts]]. Common catalysts include chromium trioxide and metallocene. Polyethylene can be produced [[In-situ resource utilization\|in-situ]] using [[Ethylene]] as feedstock. The embodied energy of polyethylene is about 100 MJ/kg, depending on the variety. Polyethylene is a [[Synthetic materials\|synthetic material]], and is the most common plastic produced on Earth. This may be true on Mars as well.		Polyethylene is produced in industrial quantities through the use of [[catalyst\|catalysts]]. Common catalysts include chromium trioxide and metallocene. Polyethylene can be produced [[In-situ resource utilization\|in-situ]] using [[Ethylene]] as feedstock. The embodied energy of polyethylene is about 100 MJ/kg, depending on the variety. Polyethylene is a [[Synthetic materials\|synthetic material]], and is the most common plastic produced on Earth. This may be true on Mars as well.