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Calcium carbonate and aluminum magnesium composite flame-retardant paper, and preparation method thereof

A nano-composite, calcium carbonate technology, applied in the direction of paper, papermaking, paper machines, etc., can solve the problems of increasing process complexity, burning phenomenon, and high cost of flame-retardant paper preparation, and achieve non-toxic and flame-retardant preparation process Significant effect, avoiding adverse effects

Active Publication Date: 2016-10-26
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that 1) smoldering time ≤ 5s; 2) damage length ≤ 150mm, the damage length is longer
The disadvantages of this method are that 1) the ignition time is ≤2s, and there is an ignition phenomenon; 2) the average carbonization length is ≤20mm, and the carbonization length is longer
The disadvantage of this method is that 1) the average burning time is ≤23s, and the burning time is longer; 2) the average carbonization length is ≤26mm, and the carbonization length is longer
The disadvantages of this method are: 1) The process is complex; 2) The average burning time is ≤38s, and the burning time is long; 3) The average carbonization length is ≤59mm, and the carbonization length is long
The disadvantages of this method are: 1) Ammonium polyphosphate has relatively high hygroscopicity due to the relatively low polymerization degree of the current ammonium polyphosphate process; 2) The average afterburn time is 4 to 5 s; 3) The average ignition time 36-55s, the burning time is longer; 4) The average carbonization length is 90-102mm, and the carbonization length is longer
The disadvantages of this method are: 1) the process is complex; 2) urea and phosphoric acid are low-toxic products, and the raw materials used have potential hazards to the health of workers and the environment; 3) the average afterburning time is 3-5s, there is a continuous burning phenomenon; 4) The average burning time is 38-50s, and the burning time is longer; 5) The average carbonization length is 98-112mm, and the carbonization length is longer
[0013] 2. The preparation cost of flame retardant paper is high and the synthesis process is complicated, such as:
The disadvantages of this method are: 1) the preparation cost of hexaaminocyclotriphosphazene is high and the synthesis process is complicated; 2) the carbonization length is 4.0mm; 3) the afterflame time is 2.0s, and there is still a afterflame phenomenon
The disadvantage of this method is that, 1) the use of high-pressure reactor increases the complexity and danger of the whole preparation process; 2) the use of high-pressure reactor increases the preparation cost of flame-retardant paper
The disadvantage of this method is that 1) the afterburning time is 8.5s, which is longer; 2) the smoldering time is 3.4s; 3) the use of deflagger increases the complexity of the process
[0017] 3. The preparation process of flame-retardant paper has the disadvantages of being highly corrosive and harmful to the environment, such as:
The disadvantage of this method is that 1) the flame retardant grades are all 2, and the flame retardant ability is low; 2) brominated flame retardants and halogenated flame retardants are highly corrosive and harmful to the environment
The weak point of this method is, 1) technological process is complicated; 2) used fire retardant urea, borax, phosphoric acid and urea phosphate all belong to low toxicity; Ammonium sulfate and sodium dihydrogen phosphate are irritating to human eyes, mucous membrane and skin role; these raw materials have potential hazards to the environment, such as polluting water bodies
The weak point of this method is that, 1) urea and Phosphoric acid is a low-toxic substance and is harmful to the environment; 2) The average burning time is ≤30s, and the burning time is longer; 3) The average carbonization length is ≤45mm, and the carbonization length is longer
The disadvantages of this method are: 1) Potential radioactive pollution problems exist in rare earth elements; 2) The afterflame time is 0.82-3.12s; 3) The ignition time is 8-75s, even without self-extinguishing, and the ignition time is longer; 4) The carbonization length is 23-91mm, and the carbonization length is longer

Method used

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  • Calcium carbonate and aluminum magnesium composite flame-retardant paper, and preparation method thereof
  • Calcium carbonate and aluminum magnesium composite flame-retardant paper, and preparation method thereof
  • Calcium carbonate and aluminum magnesium composite flame-retardant paper, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Example 1, preparing a composite flame-retardant paper containing 12.3% calcium carbonate and 87.7% aluminum-magnesium nanocrystals in nanocomposite precipitates.

[0086] The first step is to configure an aluminum ion aqueous solution.

[0087] 31.395 g of AlCl 3 ·6H 2 O, 30.42 grams of Al 2 (CO 3 ) 3 and 10.66 g of NaAlO 2 Dissolve in 500ml of deionized water and mix to prepare an aluminum ion aqueous solution with a concentration of 0.78mol / L, and filter to remove impurities in the aluminum ion aqueous solution.

[0088] The second step is to configure the magnesium ion aqueous solution.

[0089] 36.4 g of MgSO 4 , 44.89 grams of Mg (NO 3 ) 2 and 28.82 grams of MgCl 2 Dissolve in 500ml deionized water and mix to prepare a magnesium ion aqueous solution with a concentration of 1.82mol / L, and filter to remove impurities in the magnesium ion aqueous solution.

[0090] The third step is to prepare hydroxide ion suspension solution.

[0091] 132.14 grams of Na...

Embodiment 2

[0106] Example 2, preparing a composite flame-retardant paper containing 6.5% calcium carbonate and 93.5% aluminum-magnesium nanocrystals in nanocomposite precipitates.

[0107] Step 1, 10.06 grams of AlCl 3 ·6H 2 O, 9.75 grams of Al 2 (CO 3 ) 3 and 3.42 g of NaAlO 2 Dissolve in 500ml deionized water and mix to prepare an aluminum ion aqueous solution with a concentration of 0.25mol / L, and filter to remove impurities in the aluminum ion aqueous solution;

[0108] Step 2, 11.68 grams of MgSO 4 , 14.41 grams of Mg(NO 3 ) 2 and 9.25 grams of MgCl 2 Dissolve in 500ml deionized water and mix to prepare a magnesium ion aqueous solution with a concentration of 0.584mol / L, and filter to remove impurities in the magnesium ion aqueous solution;

[0109] Step 3, 45.2 grams of NaOH and 5.23 grams of Ca(OH) 2 Dissolve in 500ml deionized water and mix to prepare a hydroxide ion suspension with a concentration of 2.4mol / L;

[0110] Step 4, 19.1 grams of Na 2 CO 3 Dissolve in 500...

Embodiment 3

[0115]Example 3, preparing a composite flame-retardant paper containing 5% calcium carbonate and 95% aluminum-magnesium nanocrystals in nanocomposite precipitates.

[0116] Step A, configure aluminum ion aqueous solution.

[0117] 7.245 g of AlCl 3 ·6H 2 O, 7.02 grams of Al 2 (CO 3 ) 3 and 2.46 g of NaAlO 2 Dissolve in 500ml of deionized water and mix to prepare an aluminum ion aqueous solution with a concentration of 0.18mol / L, and filter to remove impurities in the aluminum ion aqueous solution.

[0118] Step B, configure magnesium ion aqueous solution.

[0119] 8.4 g of MgSO 4 , 10.36 grams of Mg(NO 3 ) 2 and 6.65 grams of MgCl 2 Dissolve in 500ml deionized water and mix to prepare a magnesium ion aqueous solution with a concentration of 0.42mol / L, and filter to remove impurities in the magnesium ion aqueous solution.

[0120] Step C, preparing hydroxide ion suspension.

[0121] 30.5 grams of NaOH and 3.53 grams of Ca(OH) 2 Dissolve in 500ml deionized water and...

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Abstract

The invention discloses a calcium carbonate and aluminum magnesium composite flame-retardant paper, and a preparation method thereof. The invention aims at solving the problems of low flame-retarding effect, poor corrosion resistance, high preparation cost, and environment pollution of prior arts. The invention adopts the following realization scheme: a 1.62-7.02mol / L hydroxide ion suspension liquid is added into a prepared mixed liquid of a 0.42-1.82mol / L magnesium ion solution, a 0.18-0.78mol / L aluminum ion solution and a 0.24-1.04mol / L sodium carbonate suspension liquid; heating and stirring, precipitation and washing are sequentially carried out, such that calcium carbonate and aluminum magnesium nano-grade multiphase precipitate is obtained; waste shredded paper is added into the multiphase precipitate; heating and stirring are carried out, such that flame-retardant paper pulp is obtained; and water removing and air-drying are carried out, such that the calcium carbonate and aluminum magnesium composite flame-retardant paper is obtained. The flame-retardant paper has the advantages of good flame-retarding effect, no corrosion, no pollution and low preparation cost. The flame-retardant paper can be used in the construction industry of large office occasion indoor decoration, packaging, and fire prevention.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, and in particular relates to a calcium carbonate and aluminum-magnesium nanocomposite flame-retardant paper, which can be used in the construction industry of large-scale office sites, hotels, restaurants, schools, residential homes, etc. for interior decoration, as well as packaging, prevention fire. Background technique [0002] Fire prevention is a theme of modern social security. As we all know, "paper cannot contain fire", this is common sense. Because paper is generally made of plant fibers. The plant fiber is mainly anhydrous glucose (C 6 h 12 o 6 ) is a condensate that is inflammable. The flammability of plant fibers determines the flammability of paper products. In this way, from a safety point of view, the flammability of paper products determines the limitations of paper products used in some special places. [0003] Especially with the advancement and development of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F13/00D21H11/14D21H17/67D21H21/34
CPCD21F13/00D21H11/14D21H17/64D21H17/675D21H17/73D21H21/34
Inventor 任庆利罗强雷天民李艳辉孙鹏罗杰华赵婷樊宇翔侯天佑
Owner XIDIAN UNIV
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