Preparation method of colored special-shaped acrylic fibers by wet spinning
The technology of wet spinning and acrylic fiber is applied in the field of preparation of colored iso-acrylic fiber by wet spinning of sodium thiocyanate aqueous solution, which can solve the problems of easy environmental pollution and high production cost, and achieves the reduction of environmental pollution, low ironing temperature, The effect of high color fastness to washing
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0019] (1) Preparation of spinning dope:
[0020] Prepare the color paste, the particle size of the pigment particles in the color paste is D 90 =500nm, solid content 21wt%. Add the color paste to the spinning stock solution at 80°C according to the cascade ratio of 2%, and use mechanical shearing to mix. After mixing evenly, the spinning stock solution is used for spinning after defoaming and plate and frame filtration.
[0021] (2) Preparation of colored special-shaped acrylic fibers:
[0022] The uniformly colored colored sodium thiocyanate spinning stock solution is measured by a metering pump and then extruded from a special-shaped spinneret. The length-to-diameter ratio of the spinneret extrusion hole is 12:1. The main spinning parameters are: the temperature of the coagulation bath is 3°C , the coagulation bath concentration is 13%, and the ratio of dope extrusion speed to drawing speed is 1.4. The formed fibers are formed in a secondary coagulation bath, and then c...
Embodiment 2
[0024] (1) Preparation of spinning dope:
[0025] Prepare the color paste, the particle size of the pigment particles in the color paste is D 90 =400nm, solid content 10wt%. Add the color paste to the spinning stock solution at 60°C according to the cascade ratio of 1%, and use mechanical shearing to mix. After mixing evenly, the spinning stock solution is used for spinning after defoaming and plate and frame filtration.
[0026] (2) Preparation of colored special-shaped acrylic fibers:
[0027] The uniformly colored colored sodium thiocyanate spinning stock solution is measured by a metering pump and then extruded from a special-shaped spinneret. The length-to-diameter ratio of the spinneret extrusion hole is 12:1. The main parameters of spinning are: the temperature of the coagulation bath is 2°C , the concentration of coagulation bath is 12.5%, the ratio of dope extrusion speed to drawing speed is 1.35. The formed fibers are formed in a secondary coagulation bath, and t...
Embodiment 3
[0029] (1) Preparation of spinning dope:
[0030] Prepare the color paste, the particle size of the pigment particles in the color paste is D 90 =600nm, solid content 8wt%. Add the color paste to the spinning stock solution at 70°C according to the cascade ratio of 0.5%, and use mechanical shearing to mix. After mixing evenly, the spinning stock solution is used for spinning after defoaming and plate and frame filtration.
[0031] (2) Preparation of colored special-shaped acrylic fibers:
[0032] The colored sodium thiocyanate spinning stock solution with uniform color mixing is measured by a metering pump and then extruded from a special-shaped spinneret. The length-to-diameter ratio of the spinneret extrusion hole is 13:1. The main spinning parameters are: the temperature of the coagulation bath is 3°C , the concentration of the coagulation bath is 13%, and the ratio of the dope extrusion speed to the drawing speed is 1.5. The formed fibers are formed in a secondary coag...
PUM
Property | Measurement | Unit |
---|---|---|
particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com