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Anionic asphalt temperature mixed agent and preparation method thereof

An anionic, warm mixing agent technology, applied in building insulation materials, building components, climate change adaptation, etc., can solve problems such as lack of test methods and example data support, high irritation and toxicity, lower mixing temperature, etc., to achieve improved Peeling resistance, low irritation, low temperature viscosity effect

Active Publication Date: 2015-03-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can effectively reduce the mixing temperature by about 40°C, and the performance indicators of warm-mix asphalt are not lower than those of hot-mix asphalt, but there is a lack of relevant test methods and example data support
In addition, the acid-base catalyst used in this additive is relatively irritating and toxic, which is likely to cause human harm and environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The mass percentage of raw material of anionic asphalt warm mix agent is:

[0038] Polyacrylic acid (molecular weight 5000): 0.2%;

[0039] Polyvinyl alcohol sulfate (molecular weight 12000): 0.2%;

[0040] Sulfonated polystyrene (molecular weight 25000): 4.5%;

[0041] Potassium lauryl ether phosphate: 9.2%;

[0042] Activated alumina (40 mesh): 14.5%;

[0043] Water: 71.4%.

[0044]Add water to the container according to the proportion, control the temperature at 42°C, add polyacrylic acid, stir at constant temperature for 30 minutes, then add polyvinyl alcohol sulfate, stir at constant temperature for 35 minutes, then add sulfonated polystyrene, stir at constant temperature for 55 minutes, Finally, add potassium lauryl ether phosphate and activated alumina according to the proportion, raise the temperature to 68°C, and continue stirring for 50 minutes to obtain anionic asphalt warm mix agent.

Embodiment 2

[0046] The mass percentage of raw material of anionic asphalt warm mix agent is:

[0047] Polyacrylic acid (molecular weight 5000): 4.6%;

[0048] Polyoxyethylene ether sulfate (molecular weight 15000): 2.5%;

[0049] Formaldehyde condensate of benzenesulfonic acid (molecular weight: 10000): 0.2%;

[0050] Potassium laurate soap: 18.5%;

[0051] Zeolite powder (80 mesh): 7.5%;

[0052] Water: 66.7%.

[0053] Add water to the container according to the proportion, control the temperature at 50°C, add polyacrylic acid, stir at constant temperature for 50 minutes, then add polyoxyethylene ether sulfate, stir at constant temperature for 55 minutes, then add benzenesulfonic acid formaldehyde condensate, constant temperature Stir for 35 minutes, finally add fatty acid potassium soap and activated alumina according to the proportion, raise the temperature to 62°C, and continue stirring for 55 minutes to obtain anionic asphalt warm mix agent.

Embodiment 3

[0055] The mass percentage of raw material of anionic asphalt warm mix agent is:

[0056] Polypropylene-butene copolymer (molecular weight 10000): 2.2%;

[0057] Polyvinyl alcohol sulfate (molecular weight 12000): 4.3%;

[0058] Sodium lignosulfonate (molecular weight 30000): 2.0%;

[0059] Sulfonated polybutadiene: 1.0%;

[0060] Potassium monododecyl phosphate: 0.7%;

[0061] Activated alumina (160 mesh): 2.5%;

[0062] Water: 87.3%.

[0063] Add water to the container according to the proportion, control the temperature at 59°C, add polypropylene-butene copolymer, stir at constant temperature for 45 minutes, then add polyvinyl alcohol sulfate, stir at constant temperature for 40 minutes, add sulfonated polybutadiene, Stir at constant temperature for 35 minutes, add sodium lignosulfonate, stir at constant temperature for 45 minutes, finally add potassium monododecyl phosphate and activated alumina according to the proportion, raise the temperature to 78°C, and continue ...

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PUM

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Abstract

The invention discloses an anionic asphalt temperature mixed agent and a preparation method thereof, The anionic asphalt temperature mixed agent comprises the following components by weight percentage: 0.1-5wt% of carboxylic acid high-molecular component, 0.1-5wt% of sulfuric ester high-molecular component, 0.1-5wt% of sulfonic acid high-molecular component, 0.1-20wt% of low molecular component, 1-15wt% of inorganic micro powder and 50-98.6wt% of water, The preparation method comprises the following steps: adding water in a container, respectively adding the carboxylic acid high-molecular component, the sulfuric ester high-molecular component and sulfonic acid high-molecular component, stirring for 1-2 hours under 40-60 DEG C, then adding the low molecular component and the inorganic micro powder, heating to 60-80 DEG C, continuously performing isothermal stirring for 0.5-1 hour to obtain the anionic asphalt temperature mixed agent. The anionic asphalt temperature mixed agent can effectively reduce the high temperature viscosity of asphalt, and has the advantages of good dispersion, stable performance, easy acquisition of raw materials, low production cost, simple preparation method and wide application scope.

Description

technical field [0001] The invention relates to an asphalt warm mix agent and a preparation method thereof, in particular to an anionic asphalt warm mix agent and a preparation method thereof. Background technique [0002] Asphalt mixtures currently used in road engineering are generally divided into two types according to the mixing construction temperature: cold mix asphalt mixture CMA (Cold Mix Asphalt) and hot mix asphalt mixture HMA (Hot Mix Asphalt). Cold-mix asphalt mixture is generally mixed and paved with emulsified asphalt or liquid asphalt and aggregate at room temperature, without heating the aggregate and binder, which can save a lot of energy. However, the initial road performance of cold-mix asphalt mixture is poor, and it is difficult to meet the requirements of important projects such as expressways and heavy-duty traffic roads. Hot mix asphalt mixture is the most widely used mixture with the best road performance. However, in the production process of hot...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L33/02C08L29/04C08L23/14C08L25/06C08L71/02C08L97/00C08K5/521C08K3/22C08K5/098C08K3/34C04B26/26
CPCY02A30/30
Inventor 陈闯陈保莲范思远张静宁爱民李志军程国香
Owner CHINA PETROLEUM & CHEM CORP
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