Polyacrylonitrile fibers and wet spinning method thereof
A polyacrylonitrile fiber, wet spinning technology, applied in the direction of wet spinning, fiber chemical characteristics, single-component synthetic polymer rayon, etc., can solve the problem of the decline in the mechanical properties of polyacrylonitrile fibers, and the spinning process can be spun problems such as poor spinnability, to achieve the effect of solving poor spinnability, low equipment requirements, and reducing fiber defects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0069] Preparation of spinning solution: adopt initiator azobisisobutyronitrile to make main monomer acrylonitrile and comonomer vinylidene chloride carry out polymerization reaction in solvent dimethyl sulfoxide (wherein, acrylonitrile accounts for 1% of the total monomer mass 60%, vinylidene chloride accounts for 40% of the total monomer mass, the initiator consumption is 0.8% of the total monomer mass, the solvent consumption accounts for 70% of the polymerization system quality (that is, the total mass of reactants), and the polymerization reaction temperature is 70°C , reaction time 20h), to obtain a polymerization liquid; after the polymerization liquid is de-singled and defoamed, a spinning liquid is obtained. Wherein, the polymerization conversion rate is 96.2%, the solid content of the spinning solution is 30%, and the use temperature of the spinning solution is 60° C., and the spinning solution is spun.
[0070] Spinning: Wet spinning is adopted, and the diameter of ...
Embodiment 2
[0079] Preparation of spinning solution: use initiator azobisisobutyronitrile to make main monomer acrylonitrile and comonomer dibromoethylene carry out polymerization reaction in solvent dimethyl sulfoxide (wherein, acrylonitrile accounts for 1% of the total monomer mass 55%, dibromoethylene accounted for 45% of the total monomer mass, the initiator consumption was 0.8% of the total monomer mass, the solvent consumption accounted for 65% of the polymerization system quality, the polymerization reaction temperature was 65°C, and the reaction time was 16h), and the polymerization obtained liquid; after the polymerization liquid is de-singled and defoamed, the spinning liquid is obtained. Wherein, the polymerization conversion rate is 93.5%, the solid content of the spinning solution is 35%, and the use temperature of the spinning solution is 50° C., and the spinning solution is spun.
[0080] Spinning: Wet spinning is adopted, and the diameter of the spinneret hole is 0.075mm. ...
Embodiment 3
[0089]Preparation of spinning solution: use initiator azobisisobutyronitrile to make main monomer acrylonitrile and comonomer vinylidene chloride carry out polymerization reaction in solvent dimethylacetamide (wherein, acrylonitrile accounts for 1% of the total monomer mass 60%, vinylidene chloride accounts for 40% of the total monomer mass, the initiator consumption is 0.8% of the total monomer mass, the solvent consumption accounts for 60% of the polymerization system quality, the polymerization reaction temperature is 65 ° C, and the reaction time is 20h), and the polymerization liquid; after the polymerization liquid is de-singled and defoamed, the spinning liquid is obtained. Wherein, the polymerization conversion rate is 91.8%, the solid content of the spinning solution is 40%, and the use temperature of the spinning solution is 30° C., and the spinning solution is spun.
[0090] Spinning: Wet spinning is adopted, and the diameter of the spinneret hole is 0.1mm.
[0091...
PUM
Property | Measurement | Unit |
---|---|---|
pore size | aaaaa | aaaaa |
elongation | aaaaa | aaaaa |
limiting oxygen index | 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