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Fire-retardant and modified asphalt mixture

A technology of modified asphalt and mixture, applied in the direction of building thermal insulation materials, building components, buildings, etc., can solve the problem of no application, and achieve the effect of reducing dosage, improving anti-aging performance and improving compatibility

Inactive Publication Date: 2008-09-17
SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is mainly used on the roof as a waterproof material, not on the road
[0008] Invention patent 92105725.3 also discloses a kind of non-combustible asphalt and linoleum. Its production method is to apply fire-resistant, flame-retardant and temperature-resistant chemicals such as sodium bicarbonate in the asphalt, and a layer of fire-resistant and temperature-resistant coating liquid is applied on the prepared linoleum. , so that it can be effectively fireproof when applied to building materials. However, this kind of asphalt felt is rarely used on tunnel roads
However, among the existing flame retardant technologies, few compare "flame retardant" with "smoke suppression". Moreover, for some polymers, "smoke suppression" is more important than "flame retardant", especially those containing Halogen-based flame retardants are the main source of smoke. Therefore, whether to develop a high-efficiency flame retardant that can both flame-retardant and smoke-suppressing is the main direction and trend of the industry in the future.

Method used

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  • Fire-retardant and modified asphalt mixture
  • Fire-retardant and modified asphalt mixture
  • Fire-retardant and modified asphalt mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: A kind of flame-retardant modified asphalt mixture, its component content is as follows:

[0026]

[0027] Prepared by a high-speed shear mixing emulsifier, first dehydrate the base asphalt at 120°C for 30 minutes, heat up to 176°C, add thermoplastic elastomer Kraton D-1101, shear for 20 minutes, and then add flame retardant: decabromodiphenyl oxide , melamine and magnesium oxide hydrate, smoke suppressant molybdenum dioxide, fillers and other components, mixed and sheared for 15 minutes.

[0028] The following is the performance test of the above-mentioned flame-retardant and smoke-suppressing asphalt mixture. The asphalt mixture without adding flame retardant and smoke suppressant is used for comparison. The performance indicators are shown in Table 1 below:

[0029] Table 1

[0030]

Embodiment 2

[0031] Example 2: The flame-retardant asphalt mixture described in the present invention is prepared by using SBS modified asphalt.

[0032]

[0033] Similar to the preparation method of the above-mentioned Example 1, the prepared flame-retardant and smoke-suppressing modified asphalt mixture was compared with the asphalt mixture without adding flame retardant and smoke-suppressing agent. The various performance indicators are shown in Table 2 below:

[0034] Table 2

[0035]

[0036] Softening point / ℃

Embodiment 3

[0037] Embodiment 3: The flame-retardant asphalt mixture described in the present invention is prepared by using SIS modified asphalt.

[0038]

[0039] Similar to the preparation method of the above-mentioned Example 1, the prepared flame-retardant and smoke-suppressing modified asphalt mixture was compared with the modified asphalt mixture without adding flame retardant and smoke-suppressing agent. The performance indicators are shown in Table 3 below :

[0040] table 3

[0041]

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Abstract

Disclosed is a asphalt mixture, in particular a modified asphalt mixture suitable for pavement in highway tunnel and capable of causing flame-proof effect, which comprises ground substance asphalt, plasticoelastic member, inactive filler, bittern combustion inhibitor, hydrate of metallic oxide and combustion inhibitor containing aza rings.

Description

technical field [0001] The invention relates to an asphalt mixture, in particular to an asphalt mixture which is suitable for road surface pavement in highway tunnels and can play a flame-retardant effect. Background technique [0002] With the rapid development of expressways in our country, the number of highway tunnels is also increasing. As a special road section of the highway, the highway tunnel has a length ranging from a few hundred meters to several kilometers. It is assumed that in this special road section, once a car circuit fire occurs, a car cargo fire and a traffic accident ) The fire caused by subversion will have large smoke, high temperature, difficulty in exhausting smoke; difficult evacuation; There have been many accidents of this kind in the road circles at home and abroad, and the losses have been heavy. It can be seen that for the fire prevention of highway tunnels, prevention should be the main focus, and all kinds of fire hazards should be elimina...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K5/3492
Inventor 何唯平邓忠才赵欣平张红兵李飞
Owner SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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