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Swelling type combustion inhibitor and its synthesis method

An intumescent flame retardant and a synthesis method technology, applied in the direction of fire-resistant coatings, etc., can solve the problems of easy water absorption, high cost, poor stability, etc., and achieve easy industrialization, reduce production costs, and improve water resistance and stability. Effect

Inactive Publication Date: 2006-05-10
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the typical intumescent flame retardant systems that have been industrialized, such as pentaerythritol / ammonium polyphosphate, pentaerythritol diphosphate melamine salt, etc., still have some problems, such as poor compatibility between intumescent flame retardants and polymers, easy absorption Moisture, high cost, and poor stability caused by low molecular substances, etc.

Method used

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  • Swelling type combustion inhibitor and its synthesis method

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Experimental program
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Effect test

Embodiment 1

[0019] Embodiment one: see attached figure 1 As shown, add 5 grams of starch and 10 grams of phosphorus oxychloride (about 10 milliliters) in a 100 milliliter three-necked bottle equipped with an exhaust gas absorption device according to a mass ratio of 1:2, under nitrogen protection, and stir evenly. The reaction was carried out at 25°C for 12 hours. After the reaction is finished, the product is vacuum-dried to obtain chlorinated starch phosphate. The content of phosphorus is detected, so as to deduce the molar content of chlorine. The yield was 96%.

[0020] Add 2.1 grams of melamine and 0.9 grams of paraformaldehyde into a 100 ml three-necked bottle, add 20 ml of deionized water, adjust the pH of the solution to about 9.0 with 20% sodium hydroxide solution, and then slowly heat to 80°C until the solution becomes After clearing, continue to keep warm for 15 minutes to obtain a melamine-formaldehyde prepolymer. Then take 9 grams of chlorinated starch phosphate and add i...

Embodiment 2

[0021] Embodiment 2: Add 10 grams of starch and 20 milliliters of phosphorus oxychloride into a 100 milliliter three-necked bottle equipped with a tail gas absorbing device according to a mass ratio of 1:2, protect with nitrogen, and stir evenly. The reaction was carried out at 25°C for 12 hours. After the reaction is finished, the product is vacuum-dried to obtain chlorinated starch phosphate. The content of phosphorus is detected, so as to deduce the molar content of chlorine. The yield is 93%.

[0022] Add 4.2 grams of melamine and 1.8 grams of paraformaldehyde into a 100 ml three-necked bottle, add 40 ml of deionized water, adjust the pH of the solution to about 9.0 with 20% sodium hydroxide solution, and then slowly heat to 80°C until the solution becomes After clearing, continue to keep warm for 15 minutes to obtain a melamine-formaldehyde prepolymer. Then take 18 grams of chlorinated starch phosphate and add it to the prepolymer, add 8 milliliters of Tween 80, stir v...

Embodiment 3

[0023] Embodiment 3: Add 20 grams of starch and 50 milliliters of phosphorus oxychloride into a 250 milliliter three-necked bottle equipped with an exhaust gas absorption device according to a mass ratio of 1:2.5, and stir evenly under nitrogen protection. Afterwards, the reaction was incubated at 25° C. for 14 hours. After the reaction is finished, the product is vacuum-dried to obtain chlorinated starch phosphate. The yield was 89%.

[0024] Add 9.0 grams of melamine and 4 grams of paraformaldehyde into a 250 ml three-necked bottle, add 90 ml of deionized water, adjust the pH of the solution to about 9.0 with 20% sodium hydroxide solution, and then slowly heat to 85°C until the solution becomes After clearing, continue to keep warm for 20 minutes to obtain a melamine-formaldehyde prepolymer. Finally, weigh 30 grams of chlorinated starch phosphate and add it to the prepolymer, add 12 milliliters of Tween 80, stir vigorously at room temperature for 10 minutes, then raise the...

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PUM

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Abstract

The invention discloses the inflatable fire retarding agent, comprising the following characters: using the amylophosphatase melamine salt as essential component, which is made by chlorinated amylophosphatase, made by amidon and phosphorus oxytrichloride, and melamine-formaldehyde prepolymer made by melamine and cavaform. The invention provides the new inflatable fire retarding agent including the charcoal source, acid source, gas source. The product is encapsulated to improve the water resistance and stability of fire retarding agent.

Description

technical field [0001] The invention relates to an intumescent flame retardant and a synthesis method thereof. The flame retardant integrates carbon source, acid source and gas source, and belongs to the "trinity" intumescent flame retardant. Background technique [0002] Flame retardants are one of the important additives in the processing of polymer materials. With the strengthening of environmental protection awareness, flame retardants containing halogens are gradually eliminated. Intumescent flame retardant (IFR) is an important halogen-free flame retardant, generally with P, N, and C as the main core components, and its forms include composite flame retardants and monomeric flame retardants, which can be used for Flame retardancy of many flammable polymers. [0003] When the polymer treated with intumescent flame retardant is burned, a uniform carbon foam layer is formed on the surface of the polymer, which plays the role of heat insulation,...

Claims

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Application Information

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IPC IPC(8): C09K21/14C08L3/00
Inventor 董延茂鲍治宇
Owner SUZHOU UNIV OF SCI & TECH
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