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Flame retardant paper containing rare earth-containing hydrotalcite, and preparation method and application thereof

A technology of hydrotalcite and flame-retardant paper, which is applied in the field of material science, can solve the problems of no literature reports on the application of flame-retardant paper, increase production costs, and complicated processes, and achieve significant flame-retardant effects, low cost, and simple processes Effect

Active Publication Date: 2013-11-06
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the process more complicated and increases the production cost
In addition, most of the research reports are on the application of LDHs containing rare earth elements in flame-retardant polymer materials, but there are no literature reports on the application of flame-retardant paper.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 0.9 mol MgCl 2 ·6H 2 O, 0.3 mol AlCl 3 ·6H 2 O, 0.3 mol ZnCl 2 , 0.1 mol FeCl 3 ·6H 2 O was dissolved in deionized water to form solution A; 2.56 mol NaOH, 0.8 mol Na 2 CO3 Dubbed solution B. Add solution A and solution B into the self-made reactor at room temperature, and adjust the pH value of the reaction solution to keep it at 9-10. After the reaction solution was dropped, the obtained reaction solution was stirred in the reactor for a period of time and then transferred to a three-neck flask, crystallized at 90°C for 6 h, then centrifuged, washed with deionized water to obtain a quaternary MgAlZnFe-LDHs filter cake , and then use deionized water to prepare a LDHs colloidal solution with a concentration of 4% (mass fraction).

[0021] Take a certain amount of absolute-dry pulp and dissolve it in a fiber standard disintegrator to form a 2% suspension, and mix the above-synthesized MgAlZnFe-LDHs colloid solution with the pulp evenly by using the method of...

Embodiment 2

[0023] Take 0.9 mol MgCl 2 ·6H 2 O, 0.3 mol AlCl 3 ·6H 2 O, 0.36 mol ZnCl 2 , 0.04 mol LaCl 3 ·6H 2 O was dissolved in deionized water to form solution A; 2.56 mol NaOH, 0.8 mol Na 2 CO 3 Dubbed solution B. Add solution A and solution B into the self-made reactor at room temperature, and adjust the pH value of the reaction solution to keep it at 9-10. After the reaction solution was dropped, the obtained reaction solution was stirred in the reactor for a period of time and then transferred into a three-neck flask, crystallized at 90°C for 6 h, then centrifuged, washed with deionized water to obtain the quaternary MgAlZnLa-LDHs filter cake , and then use deionized water to prepare a LDHs colloidal solution with a concentration of 4% (mass fraction).

[0024] Take a certain amount of dry pulp and disintegrate it into a 2% suspension in a fiber standard disintegrator, and mix the above-synthesized MgAlZnLa-LDHs colloid solution with the pulp evenly by using the method of...

Embodiment 3

[0026] Take 0.9 mol MgCl 2 ·6H 2 O, 0.3 mol AlCl 3 ·6H 2 O, 0.38mol ZnCl 2 , 0.02 mol CeCl 3 ·6H 2 O was dissolved in deionized water to form solution A; 2.56 mol NaOH, 0.8 mol Na 2 CO 3 Dubbed solution B. Add solution A and solution B into the self-made reactor at room temperature, and adjust the pH value of the reaction solution to keep it at 9-10. After the reaction solution was dropped, the obtained reaction solution was stirred in the reactor for a period of time and then transferred to a three-neck flask, crystallized at 90°C for 6 h, then centrifuged, and washed with deionized water to obtain a quaternary MgAlZnCe-LDHs filter cake , and then use deionized water to prepare a LDHs colloidal solution with a concentration of 4% (mass fraction).

[0027] Take a certain amount of absolute-dry pulp and dissolve it in a fiber standard disintegrator to form a 2% suspension, and mix the above-synthesized MgAlZnCe-LDHs colloid solution with the pulp evenly by using the me...

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Abstract

The invention discloses flame retardant paper containing rare earth-containing hydrotalcite, and a preparation method and an application thereof. The preparation method of the flame retardant paper containing the rare earth-containing hydrotalcite comprises the steps: firstly, synthesizing binary, ternary, quaternary, pentabasic or hexabasic hydrotalcite containing lanthanum, cerium, samarium, terbium, europium and other rare earth elements, then directly adding 5 to 300 parts of the rare earth-containing hydrotalcite into 100 parts of paper fibers by an intra-pulp addition method, a dipping method or a coating method, or modifying 100 parts of the paper fibers with 5 to 300 parts of the rare earth-containing hydrotalcite by a self-assembly method, and finally papermaking in a paper former to obtain the flame retardant paper. The flame retardant paper containing the rare earth-containing hydrotalcite utilizes the synergistic flame retardant function of the rare earth elements, so the flame retardant effect is substantially improved, and the mechanical properties are excellent. The flame retardant paper containing the rare earth-containing hydrotalcite has the characteristics of environmental protection, high efficiency and no pollution; the preparation method of the flame retardant paper is simple and diverse, and is suitable for industrial production. The flame retardant paper containing the rare earth-containing hydrotalcite can be widely applied to packaging, building and living paper and other fields.

Description

technical field [0001] The invention relates to the field of material science, in particular to a fire-retardant paper containing rare earth hydrotalcite and its preparation method and application. Background technique [0002] Paper materials made of plant fibers are widely used in packaging due to their wide source of raw materials, good printing performance, convenient composite processing, convenient industrial production, convenient transportation, low cost, light weight, waste recycling and degradability, etc. , construction, decoration and other fields. However, paper materials are easy to burn, and the burning speed is extremely fast. They will turn into ashes as soon as they come into contact with fire, and they are usually the ignition material of the fire, or promote the rapid development of the fire. Many fires are caused by paper materials. caused by burning. The fire hazard caused by paper materials has become a social issue of global concern, and people are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/69D21H21/14
Inventor 谭井华胡敏刘亦武
Owner HUNAN UNIV OF TECH
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