Comparative Testing of Carbon Black Dispersants

2026-03-06

EZHOU ANJEKA TECHNOLOGY CO.,Ltd Professional Additive Manufacturer
Experiment Record Form
Experiment Name	FW200/F255 Carbon Black Dispersant Comparison					Temperature/Humidity	7℃/65
Client	/	Applicant	Mr. Wang	Experiment Date	Jan. 21,2026
Obejective: Compare the existing dispersant 889 (98% solids content) with FW200/F255 carbon black in terms of blackness development. Measure viscosity after 60°C heat storage.Blackness (Colorimeter): L > 25.
Color Paste Formulation
1.Black Paste for PC/ABS
Resin Binder (Containing CAB)	70
dispersant	2.6	889	6881	6622	6200C	6880
Ethyl Acetate	10.4
Carbon Black	2.6	FW200	F255
Nano Barium Sulfate Sample	12
Tosoh E1011 Matting Agent	2
R972 Silica Gel	0.2
Deqian 299 Wax	0.2
	100
2.Black Paste
Resin Binder (Containing CAB)	70
dispersant	10	889	6881	6200C	6880	6622
Carbon Black	10	FW200	F255
Ethyl Acetate	10
Procedure: Prepare two different black pastes sequentially, grind to a fineness ≤10 μm, measure color development, dilute, compare with clear coat, and test after 7 days of heat storage.

Result

		889	6881	6200C	6622	6880
Black Paste for PC/ABS	Fineness before heat aging FW200/F255	＜10um	＜10um	＜10um	＜10um	＜10um
	Fineness after heat aging FW200/F255	＜10um	＜10um	＜10um	＜10um	＜10um
	Viscosity before heat aging FW200/F255	1658/2211	2716/2283	1826/2091	1601/2259	2932/2451
	Viscosity after heat aging FW200/F255	1298/2812	2932/2449	1875/1778	1322/2499	2283/2379



		889	6881	6200C	6622	6880
black paste	Fineness before heat aging FW200/F255	＜10um	＜10um	＜10um	＜10um	＜10um
	Fineness after heat aging FW200/F255	＜10um	＜10um	＜10um	＜10um	＜10um
	Viscosity before heat aging FW200/F255	3773/4061	9949/4758	6753/7330	4182/4927	8892/6008
	Viscosity after heat aging FW200/F255	4284/13282	14377/11282	10616/8140	4094/7762	23349/7046


Conclusions: F255 carbon black produced the darkest color paste with 6622 base color and no topcoat, while 6880 base color produced the darkest color paste with topcoat. FW200 carbon black produced consistent color paste shades with both 6622 base color and 889 dispersant, with identical results for base color paste and topcoat. Blackness difference meter L values all >25. After thermal storage, 6622 viscosity is lower than 889 dispersant. Recommend testing 6622 and 6880 for comparison with the currently used 889 dispersant.

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