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Thermoset and thermoplastic fibers and preparation thereof by uv curing

A technology of thermosetting and thermoplastic polymers, applied in the direction of fiber chemical characteristics, fiber processing, medical preparations of non-active ingredients, etc., can solve problems such as inability to melt and reshape

Inactive Publication Date: 2014-03-19
INTELLISIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, after a thermoset solidifies, it cannot be melted and reshaped

Method used

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  • Thermoset and thermoplastic fibers and preparation thereof by uv curing
  • Thermoset and thermoplastic fibers and preparation thereof by uv curing
  • Thermoset and thermoplastic fibers and preparation thereof by uv curing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0121] Process for preparing the polymer fibers of the present invention

[0122] For the preparation of thermoset fibers the following compositions were prepared

[0123]

[0124] All ingredients of Example 1 were mixed and heated slightly (approximately 50° C.) until clear; a single phase solution was obtained. After cooling the solution to room temperature, the viscosity of the solution at room temperature was 620 cPs.

[0125] The cooled solution was poured into a flask, which was attached to a die with a single hole having a diameter of 400 microns. A pressure equal to 1.2 atmospheres was applied to the reaction mixture, which resulted in the formation of a liquid jet, which poured through the orifice. Three UV lamps (MHL-250, USHIO) were arranged vertically just below the die hole. Due to the presence of UV radiation, the reaction mixture polymerizes immediately to form solid thermoset fibers. The fibers were collected with a twin-head winder at a speed of 250 m...

Embodiment 2

[0128] Process for preparing the polymer fibers of the present invention

[0129]

[0130] The cooled solution was poured into a flask, which was attached to a die with a single hole having a diameter of 400 microns. A pressure equal to 1.2 atmospheres was applied to the reaction mixture, which resulted in the formation of a liquid jet, which poured through the orifice. Six UV lamps (MHL-250, USHIO) were arranged vertically just below the die hole. Due to the presence of UV radiation, the reaction mixture polymerizes immediately to form solid thermoset fibers. The fibers were collected with a twin-head winder at a speed of 250 m / min.

Embodiment 3

[0132] Process for preparing the polymer fibers of the present invention

[0133] For the preparation of thermoset fibers the following compositions were prepared

[0134]

[0135] The cooled solution was poured into a flask, which was attached to a die with a single hole having a diameter of 400 microns. A pressure equal to 1.2 atmospheres was applied to the reaction mixture, which resulted in the formation of a liquid jet, which poured through the orifice. Six UV lamps (MHL-250, USHIO) were arranged vertically just below the die hole. Due to the presence of UV radiation, the reaction mixture polymerizes immediately to form solid thermoset fibers. The fibers were collected with a twin-head winder at a speed of 250 m / min.

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Abstract

In one embodiment, this invention is directed to a method of preparing a thermoset or thermoplastic polymer fiber comprising the following sequential steps: (i) providing a monomeric or oligomeric mixture, wherein said monomeric or oligomeric mixture comprises monomers or oligomers which polymerize by radiation; (ii) optionally heating or cooling said monomeric or oligomeric mixture for obtaining optimal viscosity; (iii) pumping said monomeric or oligomeric mixture through a spinneret, die or any other nozzle type; and (iv) radiating said monomeric or oligomeric mixture with a radiation source under room temperature, wherein said thermoset or thermoplastic polymer fibers are formed.

Description

field of invention [0001] The present invention provides a process for the preparation of thermoset and thermoplastic polymer fibers using UV curing technology and provides encapsulated, biodegradable, renewable functional polymer fibers prepared according to the process of the present invention. Background technique [0002] The modern fiber industry is a huge industry and fibers can be found in a variety of applications. Polymer fibers constitute the largest part of the world fiber market and are used for the preparation of yarns, threads, knitted or woven fabrics, nonwoven fabrics such as towels, diapers, industrial garments, medical and healthcare garments or filter garments. [0003] There are two main classes of polymer fibers, defined by their behavior when exposed to heat: thermoplastic and thermoset fibers. Thermoplastic polymers are usually produced in a first step and then made into products in subsequent processes. When heated, thermoplastic materials soften an...

Claims

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Application Information

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IPC IPC(8): C08G63/06
CPCD01F6/36D01F6/16D01D5/38A61K9/70D01D5/0069D01F1/10D01D10/00B29D99/0078A61K47/32C08F220/28
Inventor 奥列格·帕尔奇科瓦莱里·帕尔奇科
Owner INTELLISIV
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