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

CN106049161AActive Publication Date: 2016-10-26XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-10-26

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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.
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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...

Examples

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...