A synthesis process of a monododecyl phosphate asphalt anti-stripping agent

The technology of monododecyl phosphate and anti-stripping agent is applied in the field of synthesis and practical application of organic chemical products, and can solve the problems of reduced adhesion between asphalt and aggregate surface, accelerated road damage, low bonding strength, etc. Achieve the effect of high interfacial activity, oil phase adaptability, and good anti-peeling performance

Inactive Publication Date: 2015-06-10
QINGDAO HUICHENG PETROCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bonding strength between acid stone and asphalt is low, and the asphalt pavement may reduce the adhesion between asphalt and aggregate surface under the simultaneous action of water and traffic loads.
At this time, the water board is easy to seep into the road surface, separating the leachate from the aggregate, resulting in damage such as peeling, looseness, potholes, etc., and accelerating the damage of the road surface.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Accurately weigh 1.00 g of monododecyl phosphate and add it to 300 g of hot road petroleum asphalt No. 100 asphalt, and stir evenly in the same direction. Test the spalling resistance of phosphate ester by water boiling method, hang the stone on the lower end of the thin wire and immerse it in hot asphalt for 45s, take it out and cool it at room temperature for 15 minutes, put it in a slightly boiling water bath and boil it for 3 minutes, take it out and put it in cold water to cool, and observe the surface of the stone Asphalt wrap condition.

[0025] The results of the anti-stripping performance test show that: without adding anti-stripping agent, the adhesion level between asphalt and granite rock is grade two; when adding anti-stripping agent, the adhesion grade between asphalt and granite rock rises to grade four. It shows that the monolauryl phosphate ester synthesized in this experiment has better anti-stripping performance.

Embodiment 2

[0026] Example 2: Accurately weigh 1.00 g of monolauryl phosphate and add it to 300 g of hot road petroleum asphalt No. 140, and stir evenly in the same direction. Test the spalling resistance of phosphate ester by water boiling method, hang the stone on the lower end of the thin wire and immerse it in hot asphalt for 45s, take it out and cool it at room temperature for 15 minutes, put it in a slightly boiling water bath and boil it for 3 minutes, take it out and put it in cold water to cool, and observe the surface of the stone Asphalt wrap condition.

[0027] The results of the anti-stripping performance test show that: without adding anti-stripping agent, the adhesion level between asphalt and granite rock is grade two; when adding anti-stripping agent, the adhesion grade between asphalt and granite rock rises to grade four. It shows that the monolauryl phosphate ester synthesized in this experiment has better anti-stripping performance.

Embodiment 3

[0028] Example 3: Accurately weigh 1.00 g of monododecyl phosphate and add it to 300 g of AH-100 hot asphalt, and stir evenly in the same direction. Test the spalling resistance of phosphate ester by water boiling method, hang the stone on the lower end of the thin wire and immerse in hot asphalt for 45s, take it out and cool it at room temperature for 15 minutes, put it in a slightly boiling water bath and boil it for 3 minutes, take it out and put it in cold water to cool, and observe the surface of the stone Asphalt wrap condition.

[0029] The results of anti-stripping performance test show that: without anti-stripping agent, the adhesion level between asphalt and granite rock is grade two; when anti-stripping agent is added, the adhesion grade between asphalt and granite rock rises to grade four. It shows that the monolauryl phosphate ester synthesized in this experiment has better anti-stripping performance.

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Abstract

The invention synthesizes a dodecylphosphate mixture from phosphorus pentoxide and lauryl alcohol by an esterification reaction. By adopting monododecyl phosphate as a target product, influences of each reaction parameter on the reaction yield are researched, and the optimum synthesis conditions are determined as follows: the reaction time is 4 h, the mole ratio of the lauryl alcohol to the phosphorus pentoxide is 2.1, the reaction temperature is 85 DEG C, and the mole ratio of water to the phosphorus pentoxide is 0.8. The yield of the monododecyl phosphate can be 80% under the optimum reaction conditions. Anti-stripping performance of the monododecyl phosphate is tested by utilization of a water boiling method, and results show that: when an anti-stripping agent is not added, adhesion of asphalt and granite building stone is of the second grade; when an anti-stripping agent is added, adhesion of asphalt and granite building stone is of the fourth grade; and the monododecyl phosphate synthesized has good anti-stripping performance.

Description

technical field [0001] The invention relates to the synthesis and practical application of organic chemical products, and belongs to the field of organic chemical synthesis and construction engineering materials. Background technique [0002] Asphalt anti-stripping agent in a narrow sense is a kind of asphalt modifier that uses asphalt as the modification object and is directly mixed with hot asphalt. , Compression resistance and rain erosion resistance, reduce the peeling of asphalt materials and stones during use. The generalized asphalt anti-stripping agent also includes inorganic additives that use stone as the modification object, such as cement and lime. Asphalt anti-stripping agent is widely used in construction such as road paving and road maintenance. [0003] Acidic stones used in road construction have the best strength and wear resistance, but the binding ability between acidic stones and asphalt is weak, and it is easy to cause asphalt spalling. Therefore, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/11C08L95/00C08K5/521C04B24/00
Inventor 张学珍
Owner QINGDAO HUICHENG PETROCHEM TECH
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