Preparation method of halogen-free low-temperature flame-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 enthalpy, reduce smoke release, and simple preparation process Effect

Inactive Publication Date: 2015-09-09
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problem of high flame retardant temperature of existing flame retardants, and provides a method for preparing self-assembled flame retardant fibers at room temperature

Method used

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  • Preparation method of halogen-free low-temperature flame-retardant fiber
  • Preparation method of halogen-free low-temperature flame-retardant fiber
  • Preparation method of halogen-free low-temperature flame-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 at 4...

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

technical field [0001] The invention relates to a method for preparing low-temperature flame-retardant fibers self-assembled at room temperature. Background technique [0002] In 1930, antimony oxide-chlorinated paraffin synergistic flame retardant system was discovered and widely used in polymer materials. The discovery of halogen-antimony synergistic effect was hailed as a milestone in modern flame retardant technology. From the early 1970s to the mid-1980s, the production and application of brominated flame retardants developed vigorously. However, the flame retardant temperature of existing flame retardants is relatively high. With the advancement of science, human beings' requirements for environmental protection are also increasing. Germany and the United States have successively carried out research on the toxicity of doxyl diphenyl ether flame retardants and the environmental impact of the toxic gas produced by flame-retardant polymers during combustion. This so-ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/08
Inventor 迟庆国赵岩峰刘刚
Owner HARBIN UNIV OF SCI & TECH
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