Zwitter-ion and nonionic composite asphalt warm-mixing agent and preparation method thereof

A zwitterionic and non-ionic technology, which is applied in building insulation materials, building components, climate change adaptation, etc., can solve the problems of too stringent time requirements, lack of basis for viscosity reduction and foaming effects, and difficulty in accurate control. Achieve the effects of low production cost, lower critical micelle concentration, and lower surface tension

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding three different cationic surfactants in the warm mix agent can play the effect of anti-peeling to a certain extent, but the effect of reducing viscosity and foaming is unfounded; the preparation process of the asphalt mixture is time-consuming The requirements are too harsh, and it is difficult to control accurately in actual operation, especially in industrial applications

Method used

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  • Zwitter-ion and nonionic composite asphalt warm-mixing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The mass percentage of raw materials of zwitterionic-nonionic composite asphalt warm mix agent is:

[0038] Cocamidopropyl betaine: 18.5wt%;

[0039] Polyvinyl alcohol: 0.6wt%;

[0040] Fatty alcohol polyoxyethylene ether: 11.5wt%;

[0041] Oxalic acid: 0.3 wt%;

[0042] Water: 69.1 wt%.

[0043] Add water to the container according to the proportion, control the temperature at 42°C, add polyvinyl alcohol, stir at constant temperature for 40 minutes, heat up to 70°C, then add fatty alcohol polyoxyethylene ether and cocamidopropyl betaine according to the proportion, Stir separately for 30 minutes, add oxalic acid, and stir evenly to obtain zwitterionic-nonionic composite asphalt warm mix agent.

Embodiment 2

[0045] The mass percentage of raw materials of zwitterionic-nonionic composite asphalt warm mix agent is:

[0046] Cocamidopropyl Hydroxysultaine: 0.7wt%;

[0047] Polyacrylate: 17wt%;

[0048] Alkanolamide polyoxyethylene ether: 0.4wt%;

[0049] Formic acid: 1.2 wt%;

[0050] Water: 80.7 wt%.

[0051] Add water to the container according to the ratio, control the temperature at 52°C, add polyacrylate, stir at constant temperature for 35 minutes, heat up to 65°C, and then add alkanolamide polyoxyethylene ether and cocamidopropyl sulfone according to the ratio Add base betaine, stir separately for 40 minutes, add formic acid, stir evenly, and obtain zwitterionic-nonionic composite asphalt warm mix agent.

Embodiment 3

[0053] The mass percentage of raw materials of zwitterionic-nonionic composite asphalt warm mix agent is:

[0054] Lauryl amidopropyl amine oxide: 10.6wt%;

[0055] Water-soluble phenolic resin: 9.5wt%;

[0056] Coconut fatty acid diethanolamide: 7.2wt%;

[0057] Boric acid: 2.6 wt%;

[0058] Water: 70.1 wt%.

[0059] Add water to the container according to the proportion, control the temperature at 58°C, add water-soluble phenolic resin, stir at constant temperature for 50 minutes, heat up to 75°C, then add coconut oil fatty acid diethanolamide and lauramide propylamine oxide according to the proportion, Stir separately for 50 minutes, add boric acid, and stir evenly to obtain zwitterionic-nonionic composite asphalt warm mix agent.

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Abstract

The invention discloses a zwitter-ion and nonionic composite asphalt warm-mixing agent and a preparation method thereof. The zwitter-ion and nonionic composite asphalt warm-mixing agent comprises in percentage by weight: 0.1-20% of zwitter-ion components, 0.1-20% of macromolecule nonionic components, 0.1-15% of low-molecular-weight nonionic components, 0.1-3% of acid catalysts and 42-99.6% of water. The preparation method comprises the following steps: the water is added into a container in the proportion, the temperature is controlled to range from 40 DEG C to 60 DEG C, the macromolecule nonionic components are added, a mixture is stirred for 0.5-2 hours at a constant temperature and then heated to 60-80 DEG C, the low-molecular-weight nonionic components and the zwitter-ion components are added in the proportion and are respectively stirred for 0.5-1 hours, the acid catalysts are added so that a pH (potential of hydrogen) can be adjusted to be 5-7, and the composite asphalt warm-mixing agent is obtained. The zwitter-ion and nonionic composite asphalt warm-mixing agent can effectively reduce high-temperature viscosity of the asphalt, improves the anti-peeling performance of the asphalt and stone and has the advantages of good compounding performance, stable performance, easiness of collection of the raw materials, low production cost, simple and convenient preparation method, wide application range and the like.

Description

technical field [0001] The invention relates to an asphalt warm mix agent and a preparation method thereof, in particular to an amphoteric-nonionic composite 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 pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L29/04C08L71/02C08L33/08C08L61/06C08K5/20C08K5/092C08K5/42C08K5/09C08K3/38C04B26/26
CPCY02A30/30
Inventor 陈阳陈闯程国香张喜文
Owner CHINA PETROLEUM & CHEM CORP
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