Polyacrylonitrile fiber and preparation method thereof
A technology of acrylic fiber and acrylonitrile, which is applied to the field of acrylic fiber and its preparation, can solve the problems of fiber dyeing performance and spinning performance, the fluffy and smooth hand feeling of the fiber is not improved, and achieve the effect of good spinning performance and good comprehensive performance.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0078] 1. Production of Polymer A
[0079] Mix the two monomers of 93wt% acrylonitrile and 7wt% vinyl acetate, adjust the mixed concentration to 33wt%, and carry out the aqueous phase suspension polymerization reaction continuously at 59°C and pH 3.1; the reacted polymer is passed through The chelation reaction is terminated, and the unreacted monomer is removed with a stripper, and then the salt and moisture are removed through a water-washing filter, and the powdery polymer A is obtained by drying after granulation;
[0080] 2. Production of Polymer B
[0081] Mix the three monomers of 95wt% acrylonitrile, 3wt% methyl acrylate and 2wt% itaconic acid, adjust the mixed concentration to 40wt%, and carry out the aqueous phase suspension polymerization reaction continuously at 60°C and pH 2.8 ; Use a stripper to remove unreacted monomers, then wash and filter to remove salt and moisture, and dry to obtain powdery polymer B;
[0082] 3. Preparation of spinning dope
[0083] (1)...
Embodiment 2
[0088] Steps 1 to 3 are the same as in Example 1
[0089] 4. Preparation of acrylic fiber
[0090](1) After heating the spinning stock solution D to 82°C and filtering it through a filter, it is injected into the spinning stock solution C according to the content of the polymer B in the acrylic fiber at 15wt%, and the two spinning stock solutions are fully mixed by a mixer , it is 0.75MPa to set the pre-spinning pressure, 82 ℃ of pre-spinning temperature, carry out wet spinning by polymer B in the acrylic fiber content of 15wt%, through the coagulation bath dimethylacetamide aqueous solution, its concentration is 65wt%, The temperature is 60°C double diffusion molding, washing, 4 times drafting, oiling, drying, crimping, 330KPa shaping, packing, and acrylic fibers are obtained.
Embodiment 3
[0092] Steps 1 to 3 are the same as in Example 1
[0093] 4. Preparation of acrylic fiber
[0094] (1) After heating the spinning stock solution D to 82°C and filtering it through a filter, it is injected into the spinning stock solution C according to the content of the polymer B in the acrylic fiber at 20wt%, and the two spinning stock solutions are fully mixed through a mixer , it is 0.75MPa to set the pre-spinning pressure, 82 ℃ of pre-spinning temperature, carry out wet spinning by polymer B content in the acrylic fiber as 20wt%, through coagulation bath dimethylacetamide aqueous solution, its concentration is 45wt%, The temperature is 40°C double diffusion molding, washing, 8 times drafting, oiling, drying, crimping, 300KPa shaping, packing, and acrylic fibers are obtained.
PUM
Property | Measurement | Unit |
---|---|---|
Strength | aaaaa | aaaaa |
Modulus | 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