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Flame retarding asphalt composition for roads and preparation method thereof

A kind of asphalt composition and road asphalt technology, applied in the direction of building structure, building components, building insulation materials, etc., can solve the problem of segregation of flame retardant asphalt flame retardant, negative impact of flame retardant and asphalt compatibility, The adverse effect of flame retardant asphalt compatibility and other issues, to achieve a good smoke suppression effect, a wide range of raw material sources, and good flame retardant effect

Active Publication Date: 2010-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In general, the above-mentioned patents do not consider the segregation of flame retardants during thermal storage of flame-retardant asphalt, which is not conducive to the factory production of flame-retardant asphalt
Moreover, in the prior art, the flame retardants used in flame-retardant asphalt are mainly composed of brominated flame retardants and metal oxides and hydroxides, especially the effects of metal oxides and hydroxides on asphalt. The improvement of the overall flame retardant performance is limited, and it will also have a negative impact on the compatibility of flame retardants and asphalt. Brominated flame retardants also have a negative impact on the compatibility of flame retardant asphalt, and the affinity is insufficient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The road flame-retardant asphalt component with stable heat storage performance of the present invention:

[0051] Base bitumen 100 parts

[0052] Decabromodiphenyl ether 3 parts

[0053] Chlorinated paraffin-70 5 parts

[0054] Compatibilizer 2 parts

[0055] Vinyl silane coupling agent (A-151) 0.4 parts

[0056] Weigh the reaction raw materials according to the ratio, add base asphalt and compatibilizer into the reaction kettle respectively, heat to 120°C, and mix for 0.5 hours in a mixing device with stirring function at 500 rpm. At 140°C, add brominated flame retardants, chlorine-based flame retardants, and coupling agents in the above ratio to the molten asphalt, and stir and mix in a mixing device with high-speed stirring function at 4000 rpm for 1 hour. That is to obtain the combination mixture, and the properties of the composition are listed in Table 3. The test results show that the segregated solubility difference of the sample is 0.1%, which shows that ...

Embodiment 2

[0058] The road flame-retardant asphalt component with stable heat storage performance of the present invention:

[0059] Base bitumen 100 parts

[0060] Decabromodiphenyl ether 3 parts

[0061] Chlorinated Paraffin-50 5 parts

[0062] Chlorinated paraffin-70 10 parts

[0063] 0.5 parts of compatibilizer

[0064] Vinyl silane coupling agent (A-151) 0.4 parts.

[0065] The preparation method of this embodiment is the same as that of Example 1, and the properties of the obtained composition are listed in Table 3. The test results show that the segregated solubility difference of the sample is 0.1%, the oxygen index is 34%, and the heat storage stability and flame retardancy are all improved.

Embodiment 3

[0067] The road flame-retardant asphalt component with stable heat storage performance of the present invention:

[0068] Base bitumen 100 parts

[0069] Decabromodiphenyl ether 2 parts

[0070] Chlorinated paraffin-70 5 parts

[0071] Compatibilizer 2 parts

[0072] Vinyl silane coupling agent (A-151) 0.3 parts

[0073] The preparation method of this embodiment is the same as that of Example 1, and the properties of the obtained composition are listed in Table 4. The test results show that the segregated solubility difference of the sample is -0.1%, the oxygen index is 27%, the heat storage stability is good, and there is no obvious difference in flame retardancy compared with Example 1.

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Abstract

The invention discloses flame retarding asphalt composition for roads and preparation method thereof. The flame retarding asphalt composition for roads comprises the following components in parts by weight: 100 parts of matrix asphalt, 2-5 parts of bromine series flame retardant, 5-15 parts of chlorine series flame retardant, 0-20 parts of compatilizer and 0.3-0.5 part of coupling agent. The flame retarding asphalt composition has good flame retarding property and stable heat storage property and can meet the requirement on producing flame retarding asphalt in an industrialization mode. An up and down solubility difference of a heat storage and separation test of the flame retarding asphalt mixture is not larger than 2.0 percent, the product quality is stable, and the preparation method is simple.

Description

technical field [0001] The invention relates to an asphalt material composition and a preparation method thereof, more specifically, provides a road-use flame-retardant asphalt with stable heat storage performance and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of expressway construction, research on flame-retardant asphalt for tunnel roads has also attracted great attention from the industry. The usual practice is to learn from the successful experience in the application of flame-retardant technologies such as flame-retardant felt and flame-retardant building materials in the field of polymer materials, and modify the basic asphalt to improve the flame-resistant performance of road asphalt. [0003] People add flame retardant additives to road asphalt to slow down or terminate the chain reaction of asphalt burning, so as to achieve the purpose of flame retardancy. Usually, the flame retardants used are mainly ino...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K5/06C08K5/02C08K5/5425C08K5/00C08K5/136C08J3/20C04B26/26
Inventor 徐青柏范思远陈杰张诚陈保莲石君章宁爱民李志军
Owner CHINA PETROLEUM & CHEM CORP
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