Method for preparing halogen-free low-temperature fire-retardant fiber

A flame-retardant fiber and low-temperature technology, which is applied in the field of preparation of self-assembled low-temperature flame-retardant fibers at room temperature, can solve the problems of high flame-retardant temperature of flame retardants, achieve high heat enthalpy, simple preparation process, and reduced smoke release Effect

Inactive Publication Date: 2014-02-19
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new type of fabric made from fire retarding fibers can be easily dispersed without decompositing harmful chemicals like chlorine gas or nitrogen oxide gases when they come into contact with human skin due to their ability to stop fires quickly effectively. These fibers have several technical benefits such as being cost-effective, effective at stopping fires over 100 degrees Celsius range, strong enough for use in various industries where safety concerns require them.

Problems solved by technology

Technological Problem: Antimonene compounds were found that can improve fire resistance without adding too much weight or causing harmful effects such as cancer risk when they burn plastic products containing them. Therefore there is an urgent demand for new types of flames retarding agents with lower levels of these chemical substances while still maintaining their beneficial properties like good thermal stability, noiselessness (no smoking), low emissions).

Method used

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  • Method for preparing halogen-free low-temperature fire-retardant fiber
  • Method for preparing halogen-free low-temperature fire-retardant fiber
  • Method for preparing halogen-free low-temperature fire-retardant fiber

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specific Embodiment approach 1

[0013] Specific implementation mode 1: The preparation method of halogen-free low-temperature flame-retardant fiber in this implementation mode is as follows:

[0014] 1. Preparation of titanyl sulfate mixed solution: pour titanyl sulfate into sulfuric acid solution, and stir at 0-20°C for 1-60 minutes to obtain titanyl sulfate mixed solution, the concentration of titanyl sulfate in titanyl sulfate mixed solution 1~100g / L, the concentration of sulfuric acid is 5~100ml / L;

[0015] Two, according to the ratio of Ti ion, Cu ion, Ca ion molar ratio 1~10:1:1, calcium nitrate solution is added in the titanyl sulfate mixed solution, stir well, add copper sulfate solution, stir 1~30min, obtain Mixed solution, the concentration of the calcium nitrate solution is 1-100g / L, and the concentration of the copper sulfate solution is 1-80g / L;

[0016] 3. Seal the mixed solution obtained in step 2, let it stand for 1-600 hours, filter it, wash it with water for 3-7 times, and then dry it

specific Embodiment approach 2

[0017] Embodiment 2: This embodiment differs from Embodiment 1 in that the concentration of titanyl sulfate in the titanyl sulfate mixed solution in step 1 is 5-60 g / L, and the concentration of sulfuric acid is 10-80 ml / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0018] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the concentration of titanyl sulfate in the titanyl sulfate mixed solution in step 1 is 15 g / L, and the concentration of sulfuric acid is 20 ml / L. Others are different from the first or second specific embodiment.

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Abstract

The invention discloses a method for preparing a halogen-free low-temperature fire-retardant fiber, and relates to a method for preparing a self-assembled low-temperature fire-retardant fiber at a room temperature. The invention aims at solving the technical problem that the fire-retardant temperature of the current fire retardant is relatively high. The method comprises the following steps: 1, dissolving titanyl sulfate into water containing sulfuric acid; 2, respectively collocating a copper sulfate solution and a calcium nitrate solution; 3, adding the copper sulfate solution into a titanyl sulfate mixed solution for uniformly stirring, and then adding the calcium nitrate solution for uniformly stirring; 4, standing; 5, filtering; 6, washing; 7 drying. The decomposition temperature of the sulfur-free halogen-free fire-retardant fiber is near 150 DEG C, and the enthalpy value is high. When the sulfur-free halogen-free fire-retardant fiber is used on cotton fabrics, the limiting oxygen index is increased by 30 percent, and the amount of release of smoke is reduced by more than 40 percent. The method belongs to the filed of preparation of fire-retardant fibers.

Description

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Claims

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Application Information

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Owner HARBIN UNIV OF SCI & TECH
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