Preparation method of flame-retardant anti-dripping colored polyester fiber
By blending PET non-colored flame retardant and melt-drop masterbatch with polyester slices and using a single screw extruder for melt-spinning, the problems of complex process and uneven distribution of functional additives in the prior art are solved, and the efficient preparation of flame retardant and melt-drop-resistant colored polyester fibers are achieved, with excellent combustion performance and color fastness.
Patent Information
- Application Number
- CN202411982680.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-04-11
AI Technical Summary
In the prior art, when preparing flame-retardant and droplet-resistant colored polyester fibers, the process is complicated and there are many addition steps, resulting in uneven distribution of functional additives, affecting the spinning quality, and prone to uneven color development or degradation of flame retardant performance.
After blending PET non-colored flame retardant and melt-droplet masterbatches with polyester slices, they are melt-spinned by a single screw extruder to produce flame retardant and melt-droplet colored polyester fibers. Among them, the flame retardant PDI-MAC is blended with the polyester sliced powder matrix and extruded to granulate, and the mass percentage of PET non-colored flame retardant and anti-melting masterbatches obtained is 30 to 45%, and the mass percentage of the flame retardant PDI-MAC is 5 to 15%.
The efficient preparation of flame-retardant and molten droplet-resistant colored polyester fiber is achieved, with an extreme oxygen index of >29%, a vertical combustion grade of V0, no molten droplets, and the color fastness of light, soap, water, friction, and sweat stains all reaching levels 4 to 5, reducing production processes and costs.