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Synergic flame retardance asphalt material and preparation method thereof

A technology of asphalt material and synergistic flame retardant, which is used in building thermal insulation materials, building components, buildings, etc., can solve the problems of high addition amount of flame retardant effect, etc., and achieve the effects of excellent road performance, low cost and simple preparation method.

Inactive Publication Date: 2012-07-25
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are also certain disadvantages when metal hydroxides are used as flame retardants, for example, they need to be added in a relatively high amount to show obvious flame retardant effects

Method used

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  • Synergic flame retardance asphalt material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The synergistic flame-retardant asphalt material of this embodiment is made by mixing the following raw materials: 100kg of asphalt, 40kg of metal hydroxide, and 0.1kg of layered silicate; the asphalt is petroleum asphalt, and the metal hydroxide is hydroxide aluminum, and the layered silicate is natural sepiolite.

[0021] The preparation method of the synergistic flame-retardant asphalt material in this example is: heat the asphalt to 150°C and place it in a high-speed shearer, and stir the asphalt at a speed of 1000 rpm; then, under the same temperature and stirring conditions, , add the metal hydroxide with a particle size of not more than 200 mesh into the high-speed shearer equipped with asphalt at a constant speed within 3 minutes, continue to stir for 10 minutes, and after cooling at room temperature, a synergistic flame-retardant asphalt material is obtained.

[0022] The flame-retardant asphalt material of this embodiment has excellent road performance and mee...

Embodiment 2

[0024] This embodiment is the same as Example 1, wherein the difference is that the pitch is rock pitch or coal pitch, or two or three of petroleum pitch, rock pitch and coal pitch; the metal hydroxide is Magnesium hydroxide or magnesium hydroxide and aluminum hydroxide; The layered silicate is natural rectorite, natural montmorillonite or natural kaolin minerals, or natural montmorillonite, natural rectorite, natural sepiolite and At least two of the naturally occurring kaolin minerals.

[0025] The preparation method of the synergistic flame retardant asphalt material of this example is the same as that of Example 1.

[0026] The flame-retardant asphalt material of this embodiment has excellent road performance and meets the requirements of use, and the storage stability can reach more than one year, and the temperature sensitivity and aging resistance are obviously higher than ordinary asphalt.

Embodiment 3

[0028] The synergistic flame-retardant asphalt material of this embodiment is made by mixing the following raw materials in parts by weight: 100 kg of asphalt, 0.2 kg of metal hydroxide, and 30 kg of layered silicate; the asphalt is rock asphalt, and the metal hydroxide is magnesium hydroxide, and the layered silicate is natural montmorillonite.

[0029] The preparation method of the synergistic flame-retardant asphalt material in this embodiment is: heat the asphalt to 120°C and place it in a high-speed shearer, and stir the asphalt at a speed of 6000rpm; then, under the same temperature and stirring conditions, , add the metal hydroxide with a particle size of not more than 200 mesh into the high-speed shearer equipped with asphalt at a constant speed within 1 minute, and continue to stir for 30 minutes; finally, under the same temperature and stirring conditions, layer the The silicate was added into the high-speed shearer at a constant speed within 3 minutes, continued to ...

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Abstract

The invention discloses a synergic flame retardance asphalt material, which is characterized in that the asphalt material is prepared by mixing the following raw materials in parts by weight: 100 of asphalt, 0.2-40 of metal hydroxide, 0.1-30 of layered silicate; the asphalt is one or more of petroleum asphalt, rock asphalt and coal pitch; and the metal hydroxide is aluminum hydroxide and / or magnesium hydroxide. The invention also provided a preparation method of the synergic flame retardance asphalt material. According to the invention, the synergic flame retardance function of the metal hydroxide and the layered silicate is utilized to perform nano composite modification on asphalt; compared with the common organic flame retardant (such as a halogen flame retardant), the flame retardance technique adopted by the synergic flame retardance asphalt material is a green, non-toxic and environmentally friendly flame retardance technique; and the various road performances of the flame retardance asphalt material are good, the use requirements are met, the period of the storage stability can reach above one year, and the temperature sensitivity and the ageing resistance are obviously better than those of common asphalt.

Description

technical field [0001] The invention belongs to the technical field of flame retardant materials, and in particular relates to a synergistic flame retardant asphalt material and a preparation method thereof. Background technique [0002] Asphalt concrete pavement has the advantages of comfortable driving, low noise, good anti-skid performance, high traffic safety, and easy maintenance. It is gradually favored by designers and builders in highway construction. However, due to the flammability of asphalt, when a fire occurs in a tunnel, especially after a fire occurs in an oil-immersed state, asphalt burning will produce a large amount of toxic smoke, which will easily cause heavy losses to personnel and property. Therefore, improving the flame retardant performance of asphalt has very important practical significance for improving the traffic safety performance in tunnels and eliminating hidden dangers of traffic accidents. [0003] Commonly used flame retardants are halogen...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K3/22C08K3/34C08K9/04
Inventor 张增平裴建中温永
Owner CHANGAN UNIV
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