Polytrimethylene terephthalate fire resistant fiber and production method thereof

A polytrimethylene terephthalate and flame retardant fiber technology, which is applied in the manufacture of fire-retardant and flame-retardant filaments, single-component polyester rayon, etc. effect of function

Inactive Publication Date: 2009-12-16
张季成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, PTT is...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] First in the polymerization process, the consumption of 2-carboxyethyl (phenyl) phosphinic acid accounts for total polytrimethylene terephthalate and 2-carboxyethyl (phenyl) phosphinic acid total weight by weight ratio [2-carboxyethyl (phenyl) phosphinic acid] % by weight, the same below] Add 2-carboxyphosphinic acid to the PTT raw material, make slices through esterification according to the conventional process, and then put the slices into a vacuum drum dryer for drying. The drying temperature starts from 60°C Raise the temperature to 80°C for 2 hours, then raise the temperature to 120°C for another 3 hours, then raise the temperature to 160°C for 4 hours and keep it warm for 3 hours. Filament, spinning temperature 250°C, cooling and winding to obtain primary fiber after spinning out of the spinning assembly, winding speed 1000m / mim. The elongation ratio is 3.56 times, and after drying and shaping, the PTT flame-retardant fiber with a fineness of 1.67dtex in the pres...

Embodiment 2

[0016] First, in the polymerization process, 2-carboxyphosphinic acid is added to the PTT raw material in a weight ratio of 4%, and the flame-retardant PTT slices are made through esterification, and then the slices are put into a vacuum drum dryer to gradually increase the temperature. According to the method of drying, start to heat up at 60°C, raise the temperature to 80°C in 2 hours, then raise the temperature to 150°C in 3 hours, keep it warm for 4 hours, the moisture content of the slices is 0.004% after crystallization, put the dried slices into the screw extruder to melt Spinning, the spinning temperature is 248°C, after the spinning assembly is discharged, it is cooled and wound to obtain primary fibers, and the winding speed is 850m / mim. The primary fibers are 22dtex, and the primary fibers are balanced, bunched, oil bathed, drawn, The elongation ratio is 3.3 times, and after drying and shaping, the PTT flame-retardant fiber with a fineness of 6.67dtex in the present ...

Embodiment 3

[0018] First, put 2-carboxyphosphinic acid into the vacuum drum dryer in a proportion of 4% by weight in the PTT chips for blending and drying. The drying method is the same as in Example 1. The moisture content of the dried material is 0.003%. The final material is put into the screw extruder for melt spinning. The spinning temperature is 255°C. After being discharged from the spinning assembly, it is cooled and wound to obtain the primary fiber. The winding speed is 950m / mim. The primary fiber is 12.65dtex, and the primary fiber is balanced , clustering, oil bath, drafting, the drafting ratio is 3.8 times, and after drying and shaping, the PTT flame-retardant fiber with a fineness of 3.33dtex in the present invention is obtained.

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Abstract

The invention discloses polytrimethylene terephthalate fire resistant fiber and a production method thereof; the fire resistant fiber is prepared by melt spinning after polytrimethylene terephthalate and 2-carboxyethyl (phenyl) phosphinic acid are aggregated or blended. The fire resistant fiber keeps the characteristics of original PTT fiber such as softness, rebound resilience, anti-staining performance, anti-static behavior, normal pressure and temperature dyeing and the like; the fire resistant effect of the invention is superior to other polyester fire resistant products, and limited oxygen index can reach 38 percent; the PTT fiber has the function of functional fiber.

Description

Technical field: [0001] The invention relates to a flame-retardant fiber and a production method. Background technique: [0002] When a fire breaks out, the ambient temperature of the combustible is as high as 1000°C, and at this temperature, almost all polymer fibers will decompose. Therefore, synthetic fibers generally belong to combustible substances. If they are made to be flame-retardant or self-extinguishing, the harm caused by fires can be greatly reduced. At present, fires in public places such as hotels, guesthouses, and dance halls are common, causing many Large economic losses and casualties, so the demand for flame-retardant fibers for various textile decoration materials and bedding is becoming more and more urgent. The flame retardant fibers currently available on the market are mainly made of ordinary fibers for surface flame retardant processing, or made of PET polymers with flame retardants added to the fibers. Although the former can be flame retardant te...

Claims

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Application Information

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IPC IPC(8): D01F6/92D01F1/07
Inventor 张季成
Owner 张季成
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