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Odor-removing smoke-suppressing asphalt and preparation method thereof

A technology of asphalt and deodorant, which is used in building components, building insulation materials, buildings, etc., can solve the problem of insufficient inhibition effect of asphalt smoke, and achieve the effect of dense structure and improved inhibition effect.

Active Publication Date: 2021-12-31
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the suppression effect of asphalt smoke is not obvious in the prior art, the present invention provides a kind of odor-cleaning smoke-suppressing asphalt and its preparation method

Method used

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  • Odor-removing smoke-suppressing asphalt and preparation method thereof
  • Odor-removing smoke-suppressing asphalt and preparation method thereof
  • Odor-removing smoke-suppressing asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 19

[0082] The content of SBS modifier in the smoke-suppressing asphalt in this embodiment is 3% of the mass of the asphalt, and the content of basic magnesium sulfate whiskers (MOS) is 3% of the mass of the asphalt, and the asphalt is specifically selected as Panjin 90# asphalt.

[0083] The penetration, softening point, ductility, asphalt fume production and asphalt fume suppression rate were tested according to the basic performance test method of asphalt. The results are shown in Table 1. The SEM photos of smoke suppression asphalt are as follows figure 2 shown by figure 2 It can be seen that it is wrinkled.

Embodiment 21

[0092] In this embodiment, on the basis of Example 19, 0.15% of the asphalt mass is added as a deodorant, wherein the deodorant is the deodorant 8510-5 produced by China Shanghai Qianbao Fine Chemical Co., Ltd. The Japanese odor intensity grading method was used to grade and evaluate the asphalt odor. The test selected 10 volunteers to smell the asphalt fan heated to 160 ℃, scored according to the grading standard and took the average value, and finally summarized the evaluation.

[0093] Table 2 Japanese odor intensity classification

[0094]

[0095] After adding the deodorant, it has a certain deodorizing effect and has no effect on the asphalt performance and has no smoke suppression effect. Based on the summary of experimental data, at a high temperature of 160°C, the deodorant can reduce the odor of the base asphalt from 4-strong Odor down to 1 - the smell is barely perceptible. For the previous research, the smoke-suppressing modification reduces the release of asph...

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PUM

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Abstract

The invention discloses odorless smoke suppression asphalt and a preparation method thereof, and belongs to the technical field of suppression of volatile organic compounds in asphalt. The invention aims at solving the problems of unorganized emission of asphalt smoke and existence of stink, and consolidating the problem that the inhibition effect of asphalt smoke is not obvious in the prior art. According to the invention, the SBS and the basic magnesium sulfate whisker (MOS) are compounded to modify the asphalt, so that the SBS and the MOS form a synergistic smoke suppression system, and the smoke suppression effect of the asphalt is effectively improved. When the MOS and the asphalt are used in a combined mode, the MOS plays a flame retardant role, the MOS is evenly distributed in a net structure of the asphalt through a fine whisker structure, the structure of the MOS is more compact, whiskers like bones are inserted into the asphalt and the swelled SBS, the asphalt and the swelled SBS are more stable when heated, meanwhile, the specific surface area of the whiskers is increased, the asphalt smoke inhibition effect is improved, and the inhibition rate can reach 53%.

Description

technical field [0001] The invention relates to an odor-cleaning and smoke-suppressing asphalt and a preparation method thereof, belonging to the technical field of suppression of volatile organic compounds in asphalt. Background technique [0002] During the production, processing and use of asphalt and its products, mixed smoke containing a small amount of solid and liquid particles and various gaseous substances will be formed. Naphthalene, phenanthrene, anthracene, phenol and other substances, among which benzopyrene, anthracene-naphthalene, acridine, pyridine, phenol and other substances have serious harm to human health. Asphalt volatile organic compounds enter the respiratory system and blood circulation system through human breathing, and stimulate the human visual and olfactory organs, causing irreversible damage to the health of practitioners. In addition, the release of asphalt volatile organic compounds accelerates the aging of asphalt. Shorten the service life ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08K7/08
CPCC08L95/00C08L53/02C08K7/08Y02A30/30
Inventor 徐永丽杨松翰原杰郝向炜谭洪亮周吉森
Owner NORTHEAST FORESTRY UNIVERSITY