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A kind of smoke-suppressing and deodorizing additive and its preparation method and modified asphalt

A technology of modified asphalt and additives, which is applied in building components, building insulation materials, buildings, etc. It can solve the problems of unfavorable high-temperature modified asphalt, reduce smoke emission and odor, increase the volatile content of asphalt, and reduce decomposition.

Active Publication Date: 2021-02-23
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the added carboxylic acid esters such as methyl acetate and ethyl acetate stabilizer vinyl trichlorosilane have a boiling point of 90.6°C, which is relatively low. If the asphalt modification temperature is 170-200°C, a large amount of volatilization will occur, which is not conducive to application. in high temperature modified asphalt process

Method used

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  • A kind of smoke-suppressing and deodorizing additive and its preparation method and modified asphalt
  • A kind of smoke-suppressing and deodorizing additive and its preparation method and modified asphalt

Examples

Experimental program
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Effect test

Embodiment 1

[0037] This embodiment provides a smoke-suppressing and deodorizing additive and a smoke-suppressing and low-odor modified asphalt.

[0038] A smoke-suppressing and deodorizing additive, in parts by mass, the additive ratio: 5 parts of free radical scavenger (p-benzoquinone), 5 parts of metal organic framework compound (2.5 parts of MIL-100, 2.5 parts of MOF-199), 10 parts of inorganic adsorption material (activated carbon), 1 part of reactive odor inhibitor (3-ethoxy-4-hydroxybenzaldehyde), 79 parts of substrate (No. 62 paraffin).

[0039] A smoke-suppressing and low-odor modified asphalt: heat 100 parts of 70# asphalt to 150°C, add 1 part of the above-mentioned additives, and stir at 200 rpm for 1 hour to obtain a smoke-suppressing and low-odor modified asphalt.

Embodiment 2

[0041] This embodiment provides a smoke-suppressing and deodorizing additive and a smoke-suppressing and low-odor modified asphalt.

[0042] A smoke-suppressing and deodorizing additive, calculated in parts by mass, the additive ratio: 5 parts of free radical scavenger (2 parts of 2,2-diphenyl-1-trinitrophenylhydrazine, 3 parts of p-benzoquinone), 5 parts of metal organic framework compound (2.5 parts of MIL-100, 2.5 parts of MOF-199), 30 parts of inorganic adsorption material (activated carbon), 5 parts of reactive odor inhibitor (3-ethoxy-4-hydroxybenzaldehyde), Substrate (No. 62 paraffin) 55 parts.

[0043] A smoke-suppressing and low-odor modified asphalt: heat 100 parts of 70# asphalt to 150°C, add 1 part of the above-mentioned additives, and stir at 200 rpm for 1 hour to obtain a smoke-suppressing and low-odor modified asphalt.

Embodiment 3

[0045] This embodiment provides a smoke-suppressing and deodorizing additive and a smoke-suppressing and low-odor modified asphalt.

[0046] A smoke-suppressing and deodorizing additive, calculated in parts by mass, additive ratio: 10 parts of free radical scavenger (4 parts of 2,2-diphenyl-1-trinitrophenylhydrazine, 6 parts of p-benzoquinone), 10 parts of metal organic framework compound (5 parts of MIL-100, 5 parts of MOF-199), 20 parts of inorganic adsorption material (activated carbon), 5 parts of reactive odor inhibitor (3-ethoxy-4-hydroxybenzaldehyde), Substrate (cetostearyl alcohol) 55 parts.

[0047] A smoke-suppressing and low-odor modified asphalt: heat 100 parts of 70# asphalt to 150°C, add 1 part of the above-mentioned additives, and stir at 200 rpm for 1 hour to obtain a smoke-suppressing and low-odor modified asphalt.

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Abstract

The invention discloses a smoke-suppressing and deodorizing additive, a preparation method thereof and modified asphalt. The smoke-suppressing and deodorizing additive comprises the following components: free radical scavenger, metal organic framework compound, inorganic adsorption material, reactive odor suppressor, and base material. In the present invention, by adding a free radical scavenger to terminate the reaction with small molecule free radicals, the volatile gas of small molecules generated by the free radical reaction is reduced, and the emission of sulfur-containing thiophenes in polycyclic aromatic hydrocarbons is reduced through the efficient selective adsorption of metal-organic framework compounds. The interaction between volatile organic compounds and asphalt matrix is ​​strengthened by inorganic adsorption materials to reduce overall emissions, and the reaction of reactive odor inhibitors with mercaptans in asphalt reduces the emission of mercaptans and hydrogen sulfide, one of the odor sources. The test results show that by adding smoke-suppressing and deodorizing additives, the volatilization of asphalt smoke at 180°C is reduced by 70-88%, and the emissions of pollutants and odor sources are significantly reduced.

Description

technical field [0001] The invention belongs to the technical field of building materials, and more specifically relates to a smoke-suppressing and deodorizing additive, a preparation method thereof and modified asphalt. Background technique [0002] Asphalt has the advantages of cheap price, corrosion resistance, good water resistance, and certain adhesion, but it also has disadvantages such as poor temperature stability, low-temperature brittleness, and poor aging resistance. These shortcomings can be overcome by adding polymer modifiers and To make asphalt materials have new energy, generally the modification of asphalt materials with polymers needs to be carried out at a higher temperature to promote the swelling of polymers in asphalt and increase the swelling rate. Chinese patent application CN108690359A uses SBS to modify asphalt to prepare high-elasticity and high-viscosity modified asphalt, which involves a shearing process of raising the temperature of the asphalt ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L87/00C08L91/06C08K13/04C08K7/24C08K5/07C08K5/08C08K5/32C08K5/3435
Inventor 魏晓虎李文志于猛朱明广张磊吕勇吴志强段文锋
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD