Preparation method of halogen-free flame-retardant polylactic acid fiber

A polylactic acid fiber and polylactic acid technology, which is applied in the manufacture of fire-retardant and flame-retardant filaments, single-component polyester rayon, etc., can solve the problems of complex processing process, solvent not conforming to the theme of green environmental protection, and high amount of inorganic particles added. , to achieve the effect of broad market prospects, promoting pyrolysis to carbon, and reducing dosage

Active Publication Date: 2013-05-29
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many studies on flame-retardant polylactic acid materials, but there are still disadvantages such as high addition of inorganic particles, complicated processing, and selected solvents that do not meet the theme of environmental protection.
But there is no report on the patent related to flame-retardant polylactic acid fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Dry 8Kg of polylactic acid slices and 2Kg of melamine cyanuric acid (particle size 0.2-1.0 micron) at 90°C for 6 hours, mix the two evenly, put them into a twin-screw extruder, and melt them together at a temperature of 200°C. Mix, cool and granulate to obtain flame retardant masterbatch. In addition, 9Kg of polylactic acid slices and 1Kg of aminosilane modified montmorillonite (0.2-1.0 microns in particle size) were dried at 90°C for 6 hours, mixed evenly and put into a twin-screw extruder at 200 Melt blending at a temperature of ℃, cooling and granulation is the synergistic polylactic acid masterbatch. Then take 10Kg of polylactic acid chips, 10Kg of flame-retardant polylactic acid masterbatches, and 5Kg of synergistic flame-retardant polylactic acid masterbatches and dry them at 90°C for 6 hours, and add 25g of pentaerythritol stearate as a dispersant, and carry out the process in a melt spinning machine. Spinning, spinning parameters are: spinning temperature is 18...

Embodiment 2

[0030] Dry 7Kg of polylactic acid slices and 3Kg of melamine polyphosphate (particle size 0.2-1.0 micron) at 100°C for 12 hours, mix the two evenly, put them into a twin-screw extruder, and melt them at 200°C Blending, cooling and granulation to obtain flame retardant masterbatch. In addition, 19Kg of polylactic acid slices and 1Kg of quaternary phosphate intercalated montmorillonite (0.2-1.0 microns in particle size) were dried at 100°C for 12 hours, mixed evenly and put into a twin-screw extruder. Melt blending at a temperature of 200°C, cooling and granulation is the synergistic polylactic acid masterbatch. Then take 30Kg polylactic acid chips, 10Kg flame-retardant polylactic acid masterbatch, and 10Kg synergistic flame-retardant polylactic acid masterbatch and dry them at 100°C for 6 hours, and add 25g of ethylene bisstearic acid amide as a dispersant, and spin them on a melt spinning machine The spinning parameters are as follows: the spinning temperature is 180-220°C, t...

Embodiment 3

[0032] Dry 9Kg of polylactic acid slices and 1Kg of triphenyl phosphate (particle size: 0.2-1.0 micron) at 110°C for 12 hours, mix them evenly, put them into a twin-screw extruder, and melt them at a temperature of 200°C Blending, cooling and granulation to obtain flame retardant masterbatch. In addition, 19Kg of polylactic acid slices and 1Kg of aminosilane-modified montmorillonite (with a particle size of 0.2 to 1.0 microns) were dried at 110°C for 12 hours, and the two were mixed evenly and then put into a twin-screw extruder. Melt blending at a temperature of ℃, cooling and granulation is the synergistic polylactic acid masterbatch. Then take 13Kg of polylactic acid slices, 5Kg of flame-retardant polylactic acid masterbatches, and 7Kg of synergistic flame-retardant polylactic acid masterbatches and dry them at 110°C for 12 hours, and add 40g of pentaerythritol stearate as a dispersant, and carry out the process in a melt spinning machine. Spinning, spinning parameters are...

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Abstract

The invention relates to a preparation method of halogen-free flame-retardant polylactic acid fiber, which comprises the following steps of: (1) mixing polylactic acid slices with a flame retardant agent, performing melt blending at 180-220 DEG C, and cooling and granulating to obtain flame-retardant polylactic acid masterbatch; (2) mixing the polylactic acid slices with a synergist, performing melt blending at 190-220 DEG C, and cooling and granulating to obtain synergistic polylactic acid masterbatch; and (3) mixing the polylactic acid slices, the flame-retardant polylactic acid masterbatch, the synergistic polylactic acid masterbatch and a dispersing agent, spinning to obtain nascent fiber, and performing drafting post processing of the nascent fiber to obtain halogen-free flame-retardant polylactic acid fiber. The polylactic acid composite fiber material provided by the invention has good spinning formability and excellent fiber quality; the flame retardant agent is a halogen-free flame retardant agent, and the halogen-free flame-retardant polylactic acid fiber is safe and non-toxic in the using and burning process, thereby being green environment-friendly fiber; and the halogen-free flam-retardant polylactic acid fiber can be applied to the fields with high requirement for flame retardance such as clothing, trim, home textile and the like, and has broad market prospect.

Description

technical field [0001] The invention belongs to the field of preparation of flame-retardant fiber materials, in particular to a preparation method of a halogen-free flame-retardant polylactic acid fiber. Background technique [0002] The shortage of petroleum resources and environmental pollution have seriously promoted the development and application of non-petroleum-based green degradable polymers. Polylactic acid is a kind of green thermoplastic polyester integrating biodegradability, biocompatibility and bioabsorbability. It has good mechanical strength, elastic modulus and thermoformability. The degradation products can penetrate into human metabolism and are widely used It is used in the fields of medical treatment, pharmacy, agriculture, packaging industry, clothing industry, etc. It is considered to be the biodegradable polymer with the most market potential so far. However, like other polymer materials, the easy-to-burn characteristics limit the application of poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/07C08J3/22C08L67/04C08K5/3492C08K5/523C08K3/32C08K3/34C08K9/06C08K7/00C08K7/24
Inventor 朱美芳王世超李莉莉相恒学姜永健费海燕
Owner DONGHUA UNIV
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