Use of pentaerythritol phosphate for improving flame retardancy and spinnability of nylon

A technology of pentaerythritol phosphate and flame retardancy, which is applied in the manufacture of fire-resistant and flame-retardant filaments, single-component polyamide artificial filaments, etc., which can solve the problems of easy broken filaments, burrs, hindering the application of nylon, and reducing the spinnability of nylon And other issues

Active Publication Date: 2020-07-24
BEIJING INST OF CLOTHING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, after the above-mentioned flame retardant is added to nylon, the spinnability of nylon is greatly reduced. Spinning with ordinary spinning methods and conditions is very prone to broken filaments, burrs, etc., which seriously hinders the performance of flame retardant. The application of nylon

Method used

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  • Use of pentaerythritol phosphate for improving flame retardancy and spinnability of nylon
  • Use of pentaerythritol phosphate for improving flame retardancy and spinnability of nylon
  • Use of pentaerythritol phosphate for improving flame retardancy and spinnability of nylon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] PA6 slices were vacuum-dried at 100°C for 12 hours, and PEPA was dried in a blast drying oven at 100°C for 2 hours. 950g of PA6 slices and 50g of PEPA samples were melt-blended and extruded through a melt spinning machine, and cooled with water at room temperature to obtain PA6 / PEPA resistance. Burning nylon masterbatch casting belt. The temperature of each zone of the extruder is set at 180-235-235-230° C., and the screw speed is 30 rpm.

[0078] After the extruded PA6 / PEPA flame-retardant nylon masterbatch was cast into pellets, it was vacuum-dried at 100°C for 10 hours, and was injected into the standard sample to be tested in HAKEE MINI JET of Thermo Scientific Company in the United States. The injection temperature was 235°C and the mold temperature was 40°C, injection molding pressure 400bar, to obtain flame retardant nylon masterbatch.

Embodiment 2

[0080] The method used in this embodiment is similar to that of Example 1, except that the weight of the PA6 chips is 900 g, and the weight of the PEPA is 100 g, so as to obtain the flame-retardant nylon masterbatch.

Embodiment 3

[0082] The method used in this embodiment is similar to that of Example 1, except that the weight of PA6 chips is 850 g, and the weight of PEPA is 150 g, so as to obtain the flame-retardant nylon masterbatch.

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Abstract

The invention provides a use of pentaerythritol phosphate for improving flame retardancy and spinnability of nylon. The nylon having addition of pentaerythritol phosphate and used as a raw material isused for spinning, and not only can the flame retardancy of nylon fibers be increased, but also the fluidity and rheology of the nylon in the spinning process are increased, so that the spinning temperature during molten spinning is greatly dropped, meanwhile, the spinning speed is increased, and thus the production efficiency is increased.

Description

technical field [0001] The invention relates to the field of nylon modification, in particular to the modification of nylon by pentaerythritol phosphate. Background technique [0002] Nylon, especially nylon 6 (PA6), is widely used in the fields of engineering plastics and chemical fibers due to its good mechanical properties, light weight, good toughness, chemical resistance and durability. With the development of domestic caprolactam synthesis technology and the increase of output, the output and application fields of nylon 6 will continue to expand. [0003] However, nylon 6 has the disadvantage of being flammable, which limits its application in electrical components, public places and home textiles. Therefore, the flame-retardant modification of nylon 6 is an inevitable trend. [0004] Flame retardants commonly used in the prior art include halogenated flame retardants, phosphorus-based flame retardants, phosphorus-nitrogen compound flame retardants, and inorganic sili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/90D01F1/07
CPCD01F1/07D01F6/90
Inventor 王锐董振峰蔡倩张秀芹朱志国刘继广张文娟
Owner BEIJING INST OF CLOTHING TECH
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