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

A zwitterion, warm mix technology, applied in building insulation materials, building components, climate change adaptation, etc., can solve the problems of lack of test methods and example data support, high irritation and toxicity, and lower mixing temperature, so as to reduce Emission of smoke and harmful substances, good stability, and the effect of reducing high temperature viscosity

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

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

[0036] The mass percentage of raw materials of amphoteric asphalt warm mix agent is:

[0037] Cocamidopropyl Betaine: 18.5wt%

[0038] Lauramidopropyl Hydroxysultaine: 0.5wt%

[0039] Lauryl amidopropyl amine oxide: 11.5wt%

[0040] Acrylic acid-vinylpyridine copolymer: 0.8wt%

[0041] Oxalic acid: 0.3 wt%

[0042] Water: 68.5 wt%.

[0043] Add cocamidopropyl betaine, lauryl amidopropyl hydroxysultaine, lauryl amidopropyl amine oxide, acrylic acid-vinylpyridine copolymer and water into the container according to the proportion, stir and heat up to 63°C, add oxalic acid, adjust The pH is 6.5, and the mixture is stirred at a constant temperature for 0.5 hours to obtain a zwitterionic asphalt warm mix agent.

Embodiment 2

[0045] The mass percentage of raw materials of amphoteric asphalt warm mix agent is:

[0046] Lauramidopropyl betaine: 0.6wt%

[0047] Cocamidopropyl Hydroxysultaine: 17wt%

[0048] Lauryl amidopropyl amine oxide: 0.4wt%

[0049] Acrylic acid-vinylpyridine copolymer: 4wt%

[0050] Formic acid: 1.2 wt%

[0051] Water: 76.8 wt%.

[0052] Add lauryl amidopropyl betaine, cocamidopropyl hydroxysultaine, lauryl amidopropyl amine oxide, acrylic acid-vinylpyridine copolymer and water into the container according to the proportion, stir and raise the temperature to 71°C, add formic acid, adjust The pH is 6.0, and the mixture is stirred at a constant temperature for 1 hour to obtain a zwitterionic asphalt warm mix agent.

Embodiment 3

[0054] The mass percentage of raw materials of amphoteric asphalt warm mix agent is:

[0055] Cocamidopropyl Betaine: 10.6wt%

[0056] Cocamidopropyl Hydroxysultaine: 9.5wt%

[0057] Lauryl amidopropyl amine oxide: 18wt%

[0058] Acrylic acid-vinylpyridine copolymer: 9wt%

[0059] Boric acid: 2.6 wt%

[0060] Water: 50.3 wt%.

[0061] Add cocamidopropyl betaine, cocamidopropyl sulfobetaine, lauryl amidopropyl amine oxide, acrylic acid-vinylpyridine copolymer and water into the container according to the proportion, stir and heat up to 78°C, add boric acid, Adjust the pH to 5.5, and stir at a constant temperature for 1.5 hours to obtain a zwitterionic asphalt warm mix agent.

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PUM

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Abstract

The invention discloses a zwitter-ion asphalt warm-mixing agent and a preparation method thereof. The zwitter-ion asphalt warm-mixing agent comprises, in percentage by weight, 0.1-20% of alkyl amide propyl betaine, 0.1-20% of alkyl amide propyl hydroxyl sulfobetaine, 0.1-20% of lauramide propyl amine oxide, 0.1-10% of crylic-acid vinyl pyridine copolymer, 0.1-3% of acid catalysts and 27-99.5% of water. The zwitter-ion asphalt warm-mixing agent can effectively reduce the high-temperature viscosity of asphalt and has the advantages of good dispersity, stable performance, easiness of collection of 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 a zwitterionic 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...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L33/02C08K5/20C08K5/42C04B26/26
CPCY02A30/30
Inventor 陈闯宁爱民陈保莲李志军范思远张静程国香
Owner CHINA PETROLEUM & CHEM CORP
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