Attapulgite/hydrotalcite compound flame retardant material and preparation method thereof

An attapulgite and composite flame retardant technology, which is applied in the field of attapulgite/hydrotalcite composite flame retardant materials and their preparation, can solve the problems of unsatisfactory smoke suppression effect of flame retardant materials, and achieves excellent reinforcing effect, inhibits long big effect

Active Publication Date: 2012-04-11
常州纳欧新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to solve the technical problem that the smoke suppression effect of the existing flame retardant material is not ideal. The present

Method used

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  • Attapulgite/hydrotalcite compound flame retardant material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] 1. To 2048 grams of solid Mg(NO 3 ) 2 ·6H 2 O and 1500 grams of solid Al(NO 3 ) 3 ·9H 2 Add deionized water to O to make 10 liters of mixed solution A;

[0022] 2. To 40 liters, the molar concentration is 1mol·L -1 Add 790 grams of solid ammonium bicarbonate to ammonia to prepare mixed solution B;

[0023] 3. Heat 6000 g of attapulgite aqueous dispersion slurry with 10% mass percentage to 80°C, add 154.8 g of potassium stearate, and while stirring, add mixed solution A and attapulgite in parallel to the slurry For mixed solution B, the temperature of the system is maintained at 80°C and the pH value of the system is 11.0. After the mixed solution A is added, stop the dropwise addition of mixed solution B, continue to stir and keep the temperature for 5 hours, and pass carbon dioxide gas to the pH of the system The value is 8.5, and the attapulgite / hydrotalcite composite material slurry is obtained;

[0024] 4. Filter, wash, and dry the filter cake in vacuum ...

Example Embodiment

[0025] Example 2

[0026] 1. To 3248 grams of solid MgCl 2 ·6H 2 O and 966 grams of solid Al(Cl) 3 ·6H 2 Add deionized water to O to make 10 liters of mixed solution A;

[0027] 2. To 30 liters, the molar concentration is 3mol·L -1 Add 2370 grams of solid ammonium bicarbonate to ammonia to prepare mixed solution B;

[0028] 3. Heat 32.3 kg of attapulgite aqueous dispersion slurry with a mass percentage of 5% to 100°C, add 35.6 g of sodium laurate, while stirring, add mixed solution A to the attapulgite slurry and mix in parallel Solution B, the temperature of the system is maintained at 100°C during the process, and the pH value of the system is 11.5. After the mixed solution A is added, stop adding the mixed solution B, continue to stir and keep the reaction for 2 hours, and pass carbon dioxide gas to the pH value of the system Is 8.0 to obtain the attapulgite / hydrotalcite composite material slurry;

[0029] 4. Filter, wash, and dry the filter cake at 100°C for 3 hours in air, then ...

Example Embodiment

[0030] Example 3

[0031] 1. To 2218 grams of solid MgSO 4 ·7H 2 O and 999.6 grams of solid Al 2 (SO 4 ) 3 ·18H 2 Add deionized water to O to make 40 liters of mixed solution A;

[0032] 2. To 120 liters with a molar concentration of 0.5 mol·L -1 Add 2370 grams of solid ammonium bicarbonate to ammonia to prepare mixed solution B;

[0033] 3. Heat 13.25 kg of 20% attapulgite water dispersion slurry with a mass percentage of 20% to 70°C, add 219 grams of sodium oleate, while stirring, add mixed solution A to the attapulgite slurry and mix in parallel Solution B, the process maintains the temperature of the system at 70°C and the pH value of the system is 10.0. After the mixed solution A is added, stop adding the mixed solution B, continue to stir and keep the reaction for 24 hours, and pass carbon dioxide gas to the pH value of the system Is 9.0, and the attapulgite / hydrotalcite composite material slurry is obtained;

[0034] 4. Filter, wash, and dry the cake at 110℃ for 2 hours in air...

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Abstract

The invention relates to the fields of halogen free flame retardant materials and preparation technology thereof, in particular to an attapulgite/hydrotalcite compound flame retardant material and preparation method thereof. The attapulgite/hydrotalcite compound flame retardant material has hydrotalcite and attapulgite; the mass ratio between the hydrotalcite and the attapulgite is 0.4-2.5 to 1. The attapulgite is used as a substrate to prepare the attapulgite/hydrotalcite compound flame retardant material in situ as the surface of the attapulgite is electronegative and can absorb electropositive nano hydrotalcite in situ. The attapulgite and the hydrotalcite are used for simultaneously retarding flame and inhibiting smoke. The attapulgite/hydrotalcite compound flame retardant material has the functions of retarding flame and inhibiting smoke, so that the technical problem of undesirable smoke inhibiting effect of the current flame retardant material is solved.

Description

technical field [0001] The invention relates to the technical field of halogen-free flame-retardant materials and their preparation, in particular to an attapulgite / hydrotalcite composite flame-retardant material and a preparation method thereof. Background technique [0002] Polymer materials are widely used in various fields, but they are easy to burn and drip when exposed to fire, so it is necessary to add flame retardants to improve their flammability. For a long time, halogen-based flame retardants have been one of the important varieties of flame retardants. However, due to the release of toxic fumes when they burn, causing secondary hazards, they have been gradually restricted or even canceled. A new type of environmentally friendly halogen-free flame retardants has been developed. Flame retardant is an important trend in the development of flame retardants. Aluminum hydroxide and magnesium hydroxide have three functions of flame retardancy, smoke elimination and fil...

Claims

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Application Information

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IPC IPC(8): C08K3/34C08K3/26C08K5/098C08K5/41C08K5/42C08L23/12C08K13/02
Inventor 姚超姚群丁运生吴凤芹左士祥
Owner 常州纳欧新材料科技有限公司
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