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Organized montmorillonite flame-retarding asphalt and preparation method thereof

A technology of organic montmorillonite and montmorillonite, which is applied in the field of flame retardant asphalt, can solve the problems affecting the dispersion and uniformity of montmorillonite, poor compatibility of montmorillonite, and affecting the flame retardant effect, so as to improve rheological properties As well as anti-aging properties, improving thermal oxygen aging resistance and photo-oxidative aging resistance, and excellent flame retardant properties

Active Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high viscosity of asphalt, its rheological properties are poor, making it poorly compatible with montmorillonite, affecting the dispersion and uniformity of montmorillonite, and affecting the flame retardant effect

Method used

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  • Organized montmorillonite flame-retarding asphalt and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of organic-inorganic composite flame retardant:

[0038] Among them, the content of montmorillonite in montmorillonite is more than 97%, and its particle size is 10um. Polyphosphoric acid has a degree of polymerization of 100.

[0039] (1) Under the condition of high-speed stirring (1000-1500r / min), quickly add montmorillonite to polyphosphoric acid ethanol solution, keep stirring for 20 minutes, and filter with suction.

[0040] (2) Add the dodecylamine ethanol solution to the filter cake in step (1), stir for 1 hour after the addition, and filter with suction.

[0041] (3) Washing and vacuum drying to finally obtain an organic-inorganic composite flame retardant with good particle dispersion, fluffy and no need for grinding.

[0042] Wherein, wherein the weight content of each substance is:

[0043] Montmorillonite: 25%

[0044] Polyphosphoric acid: 25%

[0045] Dodecylamine: 50%

[0046] The preparation of organic-inorganic flame-retardant asphalt i...

Embodiment 2

[0049] Preparation of organic-inorganic composite flame retardant:

[0050] Among them, the content of montmorillonite in montmorillonite is more than 97%, and its particle size is 10um. Polyphosphoric acid has a degree of polymerization of 100.

[0051] (1) Under the condition of high-speed stirring (1000-1500r / min), quickly add montmorillonite to polyphosphoric acid ethanol solution, keep stirring for 20 minutes, and filter with suction.

[0052] (2) Add cetylamine ethanol solution to the filter cake in step (1), stir for 1 hour after the addition is complete, and filter with suction.

[0053] (3) Washing and vacuum drying to finally obtain an organic-inorganic composite flame retardant with good particle dispersion, fluffy and no need for grinding.

[0054] Wherein, wherein the weight content of each substance is:

[0055] Montmorillonite: 25%

[0056] Polyphosphoric acid: 30%

[0057] Cetylamine: 45%

[0058] The preparation of organic-inorganic flame-retardant asphalt...

Embodiment 3

[0061] Preparation of organic-inorganic composite flame retardant:

[0062] Among them, the content of montmorillonite in montmorillonite is more than 97%, and its particle size is 10um. Polyphosphoric acid has a degree of polymerization of 100.

[0063] (1) Under the condition of high-speed stirring (1000-1500r / min), quickly add montmorillonite to polyphosphoric acid ethanol solution, keep stirring for 20 minutes, and filter with suction.

[0064] (2) Add the stearylamine ethanol solution to the filter cake in step (1), stir for 1 hour after the addition, and filter with suction.

[0065] (3) Washing and vacuum drying to finally obtain an organic-inorganic composite flame retardant with good particle dispersion, fluffy and no need for grinding.

[0066] Wherein, wherein the weight content of each substance is:

[0067] Montmorillonite: 25%

[0068] Polyphosphoric acid: 35%

[0069] Octadecylamine: 45%

[0070] The preparation of organic-inorganic flame-retardant asphalt...

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Abstract

The invention provides organized montmorillonite flame-retarding asphalt, which comprises, by weight, 100 parts of basic asphalt, and 2-15 parts of an organic / inorganic composite flame retardant which is an organic / inorganic composite flame retarding material having a core-shell structure and formed by coating surface of montmorillonite granules with amine polyphosphate. The organic / inorganic composite flame retarding material having the core-shell structure increases dispersibility and uniformity of the montmorillonite inorganic powder particles in asphalt, thereby reducing filling use amount of a flame retardant and achieving advantage complement between organic and inorganic flame retardants.

Description

technical field [0001] The invention belongs to the technical field of flame-retardant asphalt, and in particular relates to an organic montmorillonite flame-retardant asphalt and a preparation method thereof. Background technique [0002] Pitch is an organic polymer compound composed of carbon and hydrogen as the main elements, which is flammable. The burning process of asphalt first melts, drips, and flows, followed by the burning of molten beads, and then the burning molten beads sprinkle and flow, causing the fire to spread and expand. The combustion of asphalt is a chemical process of exothermic and decomposition. Hydrogen, methane, benzene and alkane flammable gases are decomposed during combustion. The combustion of these gases can further accelerate the thermal decomposition of asphalt, especially in tunnels. Fire, the fire spreads quickly, the scope is wide, and the loss is large. With the continuous emergence of highway tunnels and the increase of tunnel traffic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K9/10C08K9/02C08K3/34
Inventor 宣根海徐青柏陈杰石君章宁爱民李志军
Owner CHINA PETROLEUM & CHEM CORP