Halogen-free flame retardation and smoke suppression asphalt and production method thereof

A technology of asphalt and modified asphalt, applied in building components, building insulation materials, construction and other directions, can solve the problems of inability to improve the conventional performance of asphalt, unfavorable durability of asphalt pavement, large amount of flame retardants, etc., and achieve good environmental protection. effect, excellent flame retardant and smoke suppression effect, low price effect

Inactive Publication Date: 2017-09-15
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, warm mixing and cold mixing technology can only use asphalt with low viscosity, so it will have an adverse effect on the durability of asphalt pavement, and the flame retardants used are mostly inorganic hydroxide flame retardants or organic flame retardants ,

Method used

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  • Halogen-free flame retardation and smoke suppression asphalt and production method thereof
  • Halogen-free flame retardation and smoke suppression asphalt and production method thereof
  • Halogen-free flame retardation and smoke suppression asphalt and production method thereof

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preparation example Construction

[0030] A preparation method of halogen-free flame-retardant smoke-suppressing pitch; specifically comprising the following steps:

[0031] 1), firstly mix distilled water, attapulgite and organic reagent according to the proportion at 70-80°C to obtain mixture A;

[0032] 2), then add coupling agent to mixture A, and obtain mixture B after stirring evenly;

[0033] 3), then the mixture B is naturally cooled, vacuum filtered and washed until no bubbles are generated in the extracted liquid, then dried, ground and passed through a 200-mesh sieve to obtain the organic attapulgite;

[0034] 4) After heating the asphalt to a molten state, add organic attapulgite and dispersant in turn at a stirring speed of 1500-2500r / min, and then stir evenly to obtain mixture C;

[0035] 5) Add a defoamer to the mixture C and stir evenly to obtain a halogen-free flame-retardant and smoke-suppressing asphalt.

[0036] Specifically, in step 1) and step 2), the mixture is obtained after stirring a...

Embodiment 1

[0040] Step 1. Take 100g of distilled water, 10g of attapulgite and 1.4g of octadecyltrimethylammonium chloride and stir at 70°C for 1.5h at a rate of 400r / m to obtain mixture A;

[0041] Step 2: Add 0.05 g of silane coupling agent to mixture A, and continue stirring at the same rate as step 1 for 1.5 h to obtain mixture B;

[0042] Step 3. After the mixture B is cooled, perform vacuum filtration and water washing until no air bubbles are generated in the extracted liquid, then perform drying treatment, and then grind and pass through a 200-mesh sieve to obtain an organic attapulgite;

[0043] Step 4: Heat 200g of SK90# base asphalt to 150°C to a molten state, then add 2g of organic attapulgite and 0.02g of sodium dodecylbenzenesulfonate at a stirring rate of 2000r / m, and keep the temperature at 3000r / m Stir at a high speed for 20min to obtain mixture C;

[0044] Step 5: Add 0.01 g of polydimethylsiloxane to the mixture C and stir at a rate of 1000 r / m for 5 minutes to obtain...

Embodiment 2

[0046] Step 1. Take 150g of distilled water, 10g of attapulgite and 1.5g of octadecyltrimethylammonium chloride and stir at 80°C for 2.5h at a rate of 300r / m to obtain mixture A;

[0047] Step 2. Add 0.06 g of borate coupling agent to mixture A, and continue stirring for 1 h at the same rate as step 1 to obtain mixture B;

[0048]Step 3. After the mixture B is cooled, perform vacuum filtration and water washing until no air bubbles are generated in the extracted liquid, then perform drying treatment, and then grind and pass through a 200-mesh sieve to obtain an organic attapulgite;

[0049] Step 4: Heat 200g of SK90# base asphalt to 150°C to a molten state, then add 4g of organic attapulgite and 0.06g of sodium lauryl sulfate at a stirring rate of 2000r / m, and keep stirring at a rate of 3000r / m at this temperature 20min, obtain mixture C;

[0050] Step 5: Add 0.03 g of polyoxypropylene into the mixture C and stir for 5 min at a rate of 1000 r / m to obtain organic attapulgite-m...

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Abstract

The invention discloses a halogen-free flame retardation and smoke suppression asphalt and a production method thereof. An organification reagent is selected according to the structure characteristics of attapulgite and is used to carry out organification treatment in order to obtain organic attapulgite having good compatibility with asphalt, a coupling agent is added to further improve the lipophilicity of the organic attapulgite, a dispersant is added in the organic attapulgite and asphalt mixing process in order to improve the dispersion of the attapulgite in the asphalt, the specific surface area of the organic attapulgite in the asphalt is increased to show the barrier characteristic, and an antifoaming agent is added in the late stirring stage to eliminate a large amount of bubbles generated in the high-speed stirring process to obtain the modified asphalt system having excellent flame retardation and smoke suppression effects. The halogen-free flame retardation and smoke suppression asphalt has the advantages of reduction of the discharge of smoke in the mixing and constructing process of an asphalt mixture, improvement of construction conditions, reduction of environmental pollution, and good environmental protection effect.

Description

technical field [0001] The invention belongs to the technical field of novel modified asphalt materials, and in particular relates to a halogen-free flame-retardant and smoke-suppressing asphalt and a preparation method thereof. Background technique [0002] In recent decades, with the rapid development of my country's economy and the rapid expansion of urban population, ecological and environmental problems have become increasingly prominent, and air quality has declined sharply, which has gradually become a bottleneck that plagues economic development. For this reason, the 18th National Congress of the Communist Party of China focused on coordinating the harmonious development of man and nature. The core is to adhere to the new road of industrialization and accelerate the transformation of economic growth mode while vigorously developing an eco-efficient economy, and strive to make economic and social development consistent with the carrying capacity of resources and the en...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L71/02C08L83/04C08K9/06C08K9/04C08K7/10C08K5/42
CPCC08L95/00C08K2201/003C08L2201/08C08L2201/22C08L2201/02C08L2205/025C08L2205/03
Inventor 贾猛焦文秀彭标谭立振刘家辰袁堂涛
Owner CHANGAN UNIV
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