Citation: Zhen-Jiang WU, Xiao-Wei HUO, Shou-Jun LIU, Song YANG. Preparation and Application of Resin-Free Color Pastes in Water-Based Pigment Systems[J]. Chinese Journal of Applied Chemistry, ;2021, 38(2): 212-219. doi: 10.19894/j.issn.1000-0518.200217 shu

Preparation and Application of Resin-Free Color Pastes in Water-Based Pigment Systems

Zhen-Jiang WU ^{1, 3} ,
Xiao-Wei HUO ² ,
Shou-Jun LIU ^{1, 2,,} ,
Song YANG ²

1.
Datong Inkall Chemicals Technology Co., Ltd, Datong 037500, China
2.
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
3.
Taiyuan Inkall Pen and Ink Technology Co., Ltd, Taiyuan 030032, China

Corresponding author: Shou-Jun LIU, 13303460889@163.com
Received Date: 21 July 2020
Accepted Date: 11 November 2020

Figures(6)

Gel ink is a thermodynamically unstable pigment suspension system. The choose of low-viscosity, high-stability color pastes is one of the important means to ensure the dispersion stability of the ink system. Based on this, using pigment carbon black and phthalocyanine blue as colorants, combined with hyperdispersant (EK43) and synergist (BM10), two resin-free color pastes suitable for gel ink systems were prepared. For the first time, from the perspective of the particle size of the color paste and the dispersion stability of the system, the dosage of EK43 and BM10 and the optimal grinding time were determined, and their physical and chemical properties, stability and writing performance were analyzed and tested. The results show that: adding 10.0% mass fraction of EK43 and 2.5% mass fraction of BM10 to the black paste, the grinding time is 90 min; the particle size and dispersion stability of the two color pastes reach the best when 8.0% EK43 and 2.0% BM10 are added to the blue paste and the grinding time is 120 min. The prepared resin-free color paste has high solid content, low viscosity, good storage stability, and strong tinting power. The gel ink formulated with it has good writing performance, and good centrifugal stability and heat stability.
- Resin-free color paste,
- Grinding time,
- Dispersion stability,
- Pigment solid content,
- Coloring power,
- Writing performance
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沈阳化工大学材料科学与工程学院沈阳 110142