A kind of melamine composite fiber and its manufacturing method

A melamine, composite fiber technology, applied in the direction of single-component synthetic polymer rayon, rayon manufacturing, fiber chemical characteristics, etc., can solve problems such as poor strength and toughness, eliminate air bubbles, improve compatibility and stability , the effect of more operation time

Active Publication Date: 2020-06-23
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Aiming at problems such as poor strength and toughness of melamine fibers in the prior art, one of the purposes of the present invention is to provide a melamine composite fiber, which has good strength and toughness and excellent flame retardancy; the second purpose of the present invention is to provide The manufacture of the composite fiber provides a spinning stock solution with uniform texture, good spinnability, good fluidity and high storage stability; the third purpose of the present invention is to provide a method for manufacturing the melamine composite fiber

Method used

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  • A kind of melamine composite fiber and its manufacturing method
  • A kind of melamine composite fiber and its manufacturing method
  • A kind of melamine composite fiber and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Melamine 504.5g, benzomelamine 74.9g, 37wt% formaldehyde solution 792.8g, paraformaldehyde 43.2g, polyvinyl alcohol 11g, methyl etherified melamine 10g, hydroxyethyl melamine 20g, demineralized water 25g, modified by KH-550 Add 2g of nano-silica to a reaction kettle equipped with a thermometer, a pressure gauge, a mechanical stirrer, a reflux condenser, and an ultrasonic probe, add 4g of sodium hydroxide, adjust the pH to about 9, oscillate ultrasonically for 3 hours, and stir at 90°C After 6 hours, a spinning dope with a solid content of 66% was obtained. The storage time can reach 35 days, the fiber forming property is still good, and the viscosity is 2600Pa·s. The spinning stock solution is sent to the spinning process, pumped into the filter device by the metering pump, passed through the spinneret (the diameter of the spinneret hole is 0.12mm, the pressure is 3.5Mpa, and the temperature is about 40°C), and it is continuously formed into filaments, and then enters t...

Embodiment 2

[0068] Melamine 403.6g, methylguanamine 50.1g, 37wt% formaldehyde solution 642.2g, polyethylene oxide 10g, KH-550 modified nano silicon dioxide 1g, butylated melamine 10g, hydroxyethyl ethoxylate Base melamine 30g, demineralized water 50g, add in the reactor that is equipped with thermometer, pressure gauge, mechanical stirrer, reflux condenser, ultrasonic probe, add potassium hydroxide 3g, adjust pH to be 8-9, ultrasonic vibration 3 hours, 80 °C and stirred for 8 hours to obtain a spinning dope with a solid content of 62%. The storage time can reach 37 days, the fiber forming property is still good, and the viscosity is 3100Pa·s. The spinning stock solution is sent to the spinning process, pumped into the filter device by the metering pump, passed through the spinneret (the diameter of the spinneret hole is 0.06mm, the pressure is 6Mpa, and the temperature is about 40°C), and it is continuously formed into filaments, and enters the spinning chamber filled with acid gas. The tu...

Embodiment 3

[0070] Melamine 504.5g, methylguanamine 50.1g, 37wt% formaldehyde aqueous solution 648.6g, paraformaldehyde 91.2g, sodium carboxymethyl cellulose 20g, nano-silica 7.5g modified by KH-570, methylated Melamine 5g, hydroxyethyl ethoxy melamine 25g, demineralized water 100g, add in the reactor that is equipped with thermometer, pressure gauge, mechanical stirrer, reflux condenser, ultrasonic probe, add potassium hydroxide 4g, adjust pH to be about 9 , ultrasonically oscillated for 4 hours, and stirred at 90° C. for 7 hours to obtain a spinning dope with a solid content of 65%. The storage time can reach 33 days, the fiber forming property is still good, and the viscosity is 4200Pa·s. The spinning stock solution is sent to the spinning process, pumped into the filter device by the metering pump, passed through the spinneret (the diameter of the spinneret hole is 0.12mm, the pressure is 8.7Mpa, and the temperature is about 40°C), and it is continuously formed into filaments, and the...

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Abstract

The invention discloses a melamine composite fiber and a manufacturing method thereof. The melamine composite fiber is prepared from melamine formaldehyde modified resin, an inorganic nano material subjected to surface modification through a coupling agent and a water-soluble polymer, the composite fiber is less in internal defect and high in strength and toughness, the tensile strength of the composite fiber reaches 2-6 cN / dtex, and the elongation at break reaches 15%-40%; the flame resistance is excellent, the composite fiber is extinguished immediately after leaving a flame, no molten droplet exists, smoldering does not occur, and the limit oxygen index reaches 38%-45%. According to the melamine composite fiber manufacturing method, in the spinning solution manufacturing process, hydrogen bonds are formed among all components of a spinning solution, and the compatibility is good; by means of the inorganic nano material subjected to surface modification through the coupling agent, alarge number of bubbles in the spinning solution are eliminated, the fluidity of the spinning solution is improved, and meanwhile the stability and the fiber forming property of the spinning solutionare improved; by means of the method, the melamine composite fiber can be manufactured economically.

Description

technical field [0001] The invention belongs to the technical field of composite fiber material manufacturing, and in particular relates to a melamine composite fiber and a manufacturing method thereof. Background technique [0002] Melamine fiber is made of melamine formal resin, which has the advantages of no melting, no shrinkage, no smoldering when away from fire, low thermal conductivity, low degree of coking, and good high temperature resistance. It is considered to be an excellent high temperature resistant flame retardant material. , Commonly used in aviation seat covers, theater curtains, fire suits, chemical protective clothing, protective gloves, clutch linings and high temperature resistant filter materials and other fields. In addition, melamine fiber also has the advantages of low cost and wide source of raw materials, but its market share in high temperature resistant flame retardant fiber is less than 1%. restrict. [0003] Manufacture of melamine fibers fa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/94D01F1/07D01F1/10C08G12/32
Inventor 王琪熊竹陈宁
Owner SICHUAN UNIV
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