3D-printing-paste - Revision history

Tschlordt: /* How to prepare the paste */

2022-04-03T20:44:44Z

‎How to prepare the paste

2022-04-03T20:38:15Z

‎How to prepare the paste

2022-04-03T20:37:05Z

‎Recipe examples of an alumina and a carbon black paste:

2022-04-03T20:36:18Z

‎How to prepare the paste

2022-04-03T20:34:22Z

‎Recipe examples of an alumina and a carbon black paste:

2022-04-03T20:31:52Z

‎Recipe examples of an alumina and a carbon black paste:

2022-04-03T20:20:33Z

‎Recipe examples of an alumina and a carbon black paste:

2022-04-03T20:18:04Z

‎Recipe examples of an alumina and a carbon black paste:

2022-04-03T13:37:56Z

‎Recipe examples of an alumina and a carbon black paste:

2022-04-03T13:33:54Z

‎Requirements for the feedstock

@@ Line 60: / Line 60: @@
 * Put in a shaker für several hours.
 * Add thickener
-* Put in shaker for several hours until there a no remaining lumps.
+* Put in shaker for several hours until there are no remaining lumps.
 * Prepare a lid for the PE-Bottle with a sieve in it, so the milling balls can be separated from the slurry
 * Now add the coagulant as an aqueous solution and stir the paste. The stiffness of the paste can be tuned by the amount and valency of the salt. A centrifugal planetary mixer is optimum to mix and remove air bubbles.

@@ Line 55: / Line 55: @@
 ==How to prepare the paste==
-* Mix water and dispersant in a PE-bottle. Make sure to find the proper dispersant amount, which correlates with the surface are of the powder. Better use a slight excess, as the surace area might increase during milling.
+* Mix water and dispersant in a PE-bottle. Make sure to find the proper dispersant amount, which correlates with the surface area of the powder. Better use a slight excess, as the surace area might increase during milling.
 * Add grinding media (zirconia or alumina, 3 - 20 mm diameter, some big spheres are useful)
 * Add the powder successively and shake between additions. Use decreasing additions, i.e. 50%, 25%, 12,5% ...

@@ Line 45: / Line 45: @@
 | Solvent || Water || 19-20 || Water || 30
 |-
-| Thickener || Bermocoll E320 FQ || 0.4|| PEG 10 kDa|| 3.4
+| Thickener || Bermocoll E230/320 FQ/PEG || 0.4|| PEG 10 kDa|| 3.4
 |-
 | Coagulant || Ammonium-acetate || 1.5-2.6 || Ammonium-acetate || 3.2

@@ Line 60: / Line 60: @@
 * Put in a shaker für several hours.
 * Add thickener
-* Put in shaker for several hours.
+* Put in shaker for several hours until there a no remaining lumps.
 * Prepare a lid for the PE-Bottle with a sieve in it, so the milling balls can be separated from the slurry
-* Now add the coagulant as an aqueous solution and stir the paste. A centrifugal planetary mixer is optimum to mix and remove air bubbles.
+* Now add the coagulant as an aqueous solution and stir the paste. The stiffness of the paste can be tuned by the amount and valency of the salt. A centrifugal planetary mixer is optimum to mix and remove air bubbles.

@@ Line 50: / Line 50: @@
 |}
 [[File:PSD.png|thumb|Particle size distributions]]
 ==How to prepare the paste==

@@ Line 34: / Line 34: @@
 ==Recipe examples of an alumina and a carbon black paste:==
 {| class="wikitable"
@@ Line 52: / Line 50: @@
 |}
 [[File:PSD.png|thumb|Particle size distributions]]

@@ Line 43: / Line 43: @@
 | Powder species || CT3000SG || 78-79 || Luvomaxx N990|| 64
 |-
-| Dispersant || Darvan C-N || 0,4 || Darvan 670|| 0,3
+| Dispersant || Darvan C-N || 0.4 || Darvan 670|| 0.3
 |-
-| Solvent || Example || Example || Example || Example
+| Solvent || Water || 19-20 || Water || 30
 |-
-| Polymer || Example || Example || Example || Example
+| Thickener || Bermocoll E320 FQ || 0.4|| PEG 10 kDa|| 3.4
 |-
-| Coagulant || Example || Example || Example || Example
+| Coagulant || Ammonium-acetate || 1.5-2.6 || Ammonium-acetate || 3.2
 |}
 [[File:PSD.png|thumb|Particle size distributions]]

@@ Line 41: / Line 41: @@
 ! Component !! Alumina paste !! Mass Percent !! Carbon black paste !! Mass percent
 |-
-| Powder species || Example || Example || Example || Example
+| Powder species || CT3000SG || 78-79 || Luvomaxx N990|| 64
 |-
-| Dispersant || Example || Example || Example || Example
+| Dispersant || Darvan C-N || 0,4 || Darvan 670|| 0,3
 |-
 | Solvent || Example || Example || Example || Example

← Older revision		Revision as of 13:37, 3 April 2022
Line 35:		Line 35:
	==Recipe examples of an alumina and a carbon black paste:==		==Recipe examples of an alumina and a carbon black paste:==

		+
		+
		+	{\| class="wikitable"
		+	\|-
		+	! Component !! Alumina paste !! Mass Percent !! Carbon black paste !! Mass percent
		+	\|-
		+	\| Powder species \|\| Example \|\| Example \|\| Example \|\| Example
		+	\|-
		+	\| Dispersant \|\| Example \|\| Example \|\| Example \|\| Example
		+	\|-
		+	\| Solvent \|\| Example \|\| Example \|\| Example \|\| Example
		+	\|-
		+	\| Polymer \|\| Example \|\| Example \|\| Example \|\| Example
		+	\|-
		+	\| Coagulant \|\| Example \|\| Example \|\| Example \|\| Example
		+	\|}
	[[File:PSD.png\|thumb\|Particle size distributions]]		[[File:PSD.png\|thumb\|Particle size distributions]]

← Older revision		Revision as of 13:33, 3 April 2022
Line 33:		Line 33:
	After complete dissolution of the viscosifier the suspension can be degassed using vacuum or centrifugation. If a colloidal gel shall be applied to EFF the slurry is coagulated by adding salts, pH-modifiers or charged polymers such as Polyethylene-Imine.		After complete dissolution of the viscosifier the suspension can be degassed using vacuum or centrifugation. If a colloidal gel shall be applied to EFF the slurry is coagulated by adding salts, pH-modifiers or charged polymers such as Polyethylene-Imine.

−	~~How to prepare~~ a ~~simple high solids loading Paste based on Al2O3~~:	+	==Recipe examples of an alumina and a carbon black paste:==
		+
		+	[[File:PSD.png\|thumb\|Particle size distributions]]