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Asphalt volatile organic compound composite inhibitor, smoke-restraining asphalt, manufacturing method of asphalt volatile organic compound composite inhibitor and manufacturing method of smoke-restraining asphalt

A technology of volatile organic compounds and composite inhibitors, which is applied in the direction of building structure, building components, building insulation materials, etc., can solve the problem of high heat absorption of flame retardants, cumbersome preparation process, and ineffective effect of asphalt volatile organic compound inhibitors, etc. problem, to achieve the effect of reducing the amount of release

Inactive Publication Date: 2016-07-20
CHINA GEZHOUBA GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of flame retardants will generally have a certain negative impact on the performance of asphalt, and because the flame retardant absorbs a lot of heat, the temperature of the asphalt is low and the temperature cools down quickly, which brings certain difficulties to the site construction. Therefore, asphalt at home and abroad In the use of VOC inhibitors, flame retardants are often not selected
[0010] The effect of asphalt VOC inhibitors developed at this stage is not obvious, and the composition is complex, the preparation process is cumbersome, and the inhibition principle is not clear. Therefore, the research and development of asphalt VOC compound inhibitors with excellent effects and simple preparation is very important

Method used

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  • Asphalt volatile organic compound composite inhibitor, smoke-restraining asphalt, manufacturing method of asphalt volatile organic compound composite inhibitor and manufacturing method of smoke-restraining asphalt
  • Asphalt volatile organic compound composite inhibitor, smoke-restraining asphalt, manufacturing method of asphalt volatile organic compound composite inhibitor and manufacturing method of smoke-restraining asphalt
  • Asphalt volatile organic compound composite inhibitor, smoke-restraining asphalt, manufacturing method of asphalt volatile organic compound composite inhibitor and manufacturing method of smoke-restraining asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Use 90 # Road petroleum asphalt, according to the order of adding compound inhibitors and modification process to prepare asphalt volatile organic compound suppression smoke suppression asphalt, the mass percentage of each component of smoke suppression asphalt (modified asphalt) is: base asphalt-91%, SBS modifier- 4%, activated carbon-3%, magnesium-aluminum-based layered double hydroxyl composite metal hydroxide-2%. According to the "Experimental Regulations for Asphalt and Asphalt Mixtures in Highway Engineering", the basic performance test method of asphalt issued by the ministry, its penetration, softening point, anti-aging ability and other parameters were tested. The data are shown in Table 1.

[0043] Table 1 Basic performance test results of asphalt 1

[0044]

[0045] After the compound inhibitor of the present invention is added to asphalt, the penetration of asphalt decreases, the softening point increases, the residual penetration increases, and the incr...

Embodiment 2

[0047] According to the basic performance test method of asphalt mixture issued by the "Experimental Regulations for Asphalt and Asphalt Mixture in Highway Engineering", parameters such as stability, splitting strength and high temperature stability of the modified asphalt mixture were tested. The data are shown in Table 2.

[0048] Table 1 Basic performance test results of asphalt 2

[0049]

[0050] The residual stability of smoke suppression (modified) asphalt is 10.9% higher than that of PJ90 base asphalt, and the freeze-thaw cycle strength ratio is 17.51% higher than that of PJ90 base asphalt. It shows that the incorporation of compound inhibitor can enhance the adhesion strength of asphalt and improve the water damage resistance of asphalt mixture.

Embodiment 3

[0052]STA449F3Jupiter is a synchronous TG-DSC thermal analyzer launched by NETZSCH. It covers a wide temperature range from -150°C to 2000°C and has a high resolution (0.1 μg). This instrument is used in the present invention to measure asphalt volatile organic compounds To evaluate the inhibitory effect of compound inhibitors on asphalt VOC by specific components. Among them, A1-A5 are other types of asphalt VOC inhibitors, and A6 is a composite asphalt VOC inhibitor of the present invention. PJ90 matrix asphalt and PJ90 smoke-suppressing asphalt with compound inhibitors were selected, the heating rate was controlled at 10°C / min, and mass spectrometry was carried out from room temperature to 250°C to evaluate the volatilization of asphalt VOC.

[0053] Select two kinds of gases with molecular weights of 44 and 46, and evaluate the inhibitory effect by their release rate, the results are shown in figure 1 , 2 .

[0054] Depend on figure 1 , 2 It can be seen that under the...

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Abstract

The invention relates to the technical field of restraining of an asphalt volatile organic compound, in particular to an asphalt volatile organic compound composite inhibitor, smoke-restraining asphalt, a manufacturing method of the asphalt volatile organic compound composite inhibitor and a manufacturing method of the smoke-restraining asphalt. The composite inhibitor is prepared from the following components in parts by weight: 3-7 parts of an SBS modifying agent, 1.5-5 parts of activated carbon, and 1.5-6 parts of magnalium-based layered double-hydroxyl composite metal hydroxide. The smoke-restraining asphalt is prepared from the following components in parts by weight: 87-90 parts of substrate asphalt, 4-5 parts of an SBS modifying agent, 2-4 parts of activated carbon, and 2-4 parts of magnalium-based layered double-hydroxyl composite metal hydroxide. The manufacturing method of the smoke-restraining asphalt comprises the following steps: heating the substrate asphalt to 150-170 DEG C and performing stirring in a heat insulating manner; in the stirring process, sequentially adding the SBS modifying agent, the activated carbon and the magnalium-based layered double-hydroxyl composite metal hydroxide to the substrate asphalt; after performing stirring, performing cutting. The asphalt in which the composite inhibitor is added is better in gas released effect than the smoke-retraining asphalt modified by other inhibitors, so that VOC release amount of the asphalt is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of suppression of asphalt volatile organic compounds, in particular to a composite inhibitor of asphalt volatile organic compounds, smoke-suppressing asphalt and a preparation method thereof. Background technique [0002] Asphalt volatile organic compound (VOC) is a mixed smoke containing a small amount of solid and liquid particles and various gaseous substances formed during the production, processing and use of asphalt and its products. More than 100 kinds of ingredients in the compound contain carbazole, pyridine, naphthalene, phenanthrene, anthracene, phenol and other substances, among which benzopyrene, anthracene naphthalene, acridine, pyridine, phenol and other substances have serious harm to human health . Volatile organic compounds in asphalt enter the respiratory system and blood circulation system through human breathing, and stimulate the human visual and olfactory organs, posing a great threat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08K7/24C08K3/22
CPCC08L95/00C08K3/22C08K7/24C08K2003/2227C08K2201/003C08K2201/006C08L53/02
Inventor 周厚贵崔培强吴光富吴少鹏晏石林陈宏
Owner CHINA GEZHOUBA GROUP CO LTD
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