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Novel cigarette flame retardant as well as preparation method and application thereof

A technology for flame retardants and cigarettes, which is applied in the field of cigarette paper flame retardancy, can solve problems such as no related research, and achieve the effects of simple post-processing, good heat insulation and flame retardancy, and green preparation methods

Active Publication Date: 2021-06-29
HUBEI CHINA TOBACCO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are many studies on the application of metal organic framework materials in gas storage and separation, air purification and energy storage. Related research

Method used

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  • Novel cigarette flame retardant as well as preparation method and application thereof

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preparation example Construction

[0030] The embodiment of the present invention provides a preparation method of a novel cigarette flame retardant, comprising the following steps:

[0031] (1) Prepare the first solution: dissolve the halogenated terephthalic acid in absolute ethanol; among them, the halogenated terephthalic acid is 2-chloroterephthalic acid, 2-fluoroterephthalic acid, 2-bromoterephthalic acid Any one of terephthalic acid;

[0032] (2) Prepare the second solution: dissolve the transition metal compound in absolute ethanol; wherein, the transition metal compound is ferric chloride hexahydrate or cobalt chloride hexahydrate;

[0033] (3) Mix the first solution, the second solution, and pure water to obtain a mixed solution, and place the mixed solution at 40-60°C for 1-2 hours;

[0034] (4) After the reaction product is subjected to solid-liquid separation and drying, a powdery substance is obtained, which is a flame retardant.

[0035] A novel cigarette flame retardant of the present inventio...

Embodiment 1

[0048] Embodiment 1 of the present invention provides a novel cigarette flame retardant and a preparation method thereof. The preparation method comprises the following steps:

[0049] (1) Weigh 150mg of 2-chloroterephthalic acid, put it in a 250mL round flask, add 100mL of absolute ethanol (analytical grade) and a magnet for magnetic stirring, and place it on a magnetic stirrer , the speed is set to 1000~1500rpm;

[0050] (2) Prepare an anhydrous ethanol solution of ferric chloride hexahydrate with a concentration of 0.5g / mL;

[0051] (3) Under magnetic stirring at room temperature, add 15 mL of an anhydrous ethanol solution of ferric chloride hexahydrate with a concentration of 0.5 g / mL and 8 mL of pure water into the round flask at a rate of 0.5 mL / s. After magnetically stirring for 20 minutes, move the round bottom flask to a 40°C constant temperature water bath for 2 hours;

[0052] (4) Pass the entire reaction solution through a 0.22 μm filter membrane, wash twice wit...

Embodiment 2

[0054] Embodiment 2 of the present invention provides a novel cigarette flame retardant and a preparation method thereof. The preparation method comprises the following steps:

[0055] (1) Weigh 150mg of 2-fluoroterephthalic acid, put it in a 250mL round flask, add 150mL of absolute ethanol (analytical grade) and a magnet for magnetic stirring, and place it on a magnetic stirrer , the speed is set to 1000~1500rpm;

[0056] (2) Prepare an anhydrous ethanol solution of ferric chloride hexahydrate with a concentration of 0.3g / mL;

[0057] (3) Under magnetic stirring at room temperature, add 12 mL of an anhydrous ethanol solution of ferric chloride hexahydrate with a concentration of 0.3 g / mL and 6 mL of pure water into the round flask at a rate of 0.5 mL / s. After magnetically stirring for 30 minutes, move the round-bottomed flask to a constant temperature water bath at 60°C to react for 1 hour;

[0058] (4) Pass the entire reaction solution through a 0.22 μm filter membrane, w...

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Abstract

The invention provides a novel cigarette flame retardant as well as a preparation method and an application thereof. The invention relates to a preparation method of a novel cigarette flame retardant. The preparation method comprises the following steps: preparing a first solution: dissolving halogenated terephthalic acid in absolute ethyl alcohol; wherein the halogenated terephthalic acid is any one of 2-chloroterephthalic acid, 2-fluoroterephthalic acid and 2-bromoterephthalic acid; preparing a second solution: dissolving a transition metal compound in absolute ethyl alcohol; wherein the transition metal compound is ferric trichloride hexahydrate or cobalt chloride hexahydrate; mixing the first solution, the second solution and purified water to obtain a mixed solution, and reacting the mixed solution at 40-60 DEG C for 1-2 hours; and carrying out solid-liquid separation on the reaction product, and drying to obtain a powdery substance. After the novel cigarette flame retardant is applied to cigarette packaging paper, the flameout rate of cigarettes on a three-layer filter paper substrate is 91.8% or above, the flameout rate on a 10-layer filter paper substrate is 100%, and the flameout rate in a transverse test is 0.

Description

technical field [0001] The invention belongs to the technical field of cigarette paper flame retardant, and in particular relates to a novel cigarette flame retardant and its preparation method and application. Background technique [0002] With the escalation of people's awareness of tobacco hazards, people not only pay attention to the direct harm caused by cigarette products to the human body, but also pay more and more attention to the indirect impact of fire caused by cigarettes on human life. Lit cigarettes fall on combustibles and cause fires, endangering people's personal safety and property safety, and causing great losses at home and abroad. It must be done, which is of great significance to reduce the fire caused by smoking. [0003] At present, cigarette paper with a low tendency to burn is prepared by coating the surface of the cigarette paper with a flame retardant tape or adding a flame retardant filler during the preparation of the cigarette paper. For examp...

Claims

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Application Information

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IPC IPC(8): C08G83/00C09D11/03
CPCC08G83/008C09D11/03
Inventor 郭国宁张耀华熊国玺李超吴凯赵国豪方意
Owner HUBEI CHINA TOBACCO IND