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Long-acting slow-release black anti-freezing modifier for asphalt pavement and preparation method thereof

An anti-icing and modifier technology, applied in the field of long-acting slow-release black anti-icing modifier for asphalt pavement, to achieve excellent durability, good stress resistance, and excellent slow-release effect

Active Publication Date: 2020-07-31
江苏山海新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] In view of the above problems, the purpose of the present invention is to provide a black anti-icing modifier, which is suitable for the climate characteristics of various places in my country, and has excellent anti-icing properties, slow release, and durability, so even when black anti-icing When the ice modifier is mixed unevenly with the asphalt mixture or the formed anti-icing pavement is used for a long time, there will be no problem of road surface reflection caused by salt precipitation and whitening

Method used

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  • Long-acting slow-release black anti-freezing modifier for asphalt pavement and preparation method thereof
  • Long-acting slow-release black anti-freezing modifier for asphalt pavement and preparation method thereof
  • Long-acting slow-release black anti-freezing modifier for asphalt pavement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] Calcium chloride, magnesium chloride and sodium chloride (all industrial grade, 2:2:6) and carbon black are added to tetrahydrofuran at a ratio of 1:15 (the addition amount is 10 times that of the solid mixed material), and Stir at 300r / min for 30min. Subsequently, tetrahydrofuran is removed at room temperature to obtain salt storage particles.

[0103] At room temperature, fully stir and dissolve asphalt, SBS and SBR (1:50:25) in tetrahydrofuran, add the above-mentioned salt storage particles to it, stir at 100r / min for 30min, fully stir and coat. Subsequently, it is dried at 60°C, and granulated and sieved to make the particle size of the black anti-icing ice modifier less than 5 mm. By weighing calculation, the coating material is about 100 parts by mass relative to 100 parts by mass of salt storage particles.

[0104] The dried material is cooled to room temperature, and then measured and packaged to obtain the black anti-coagulation ice modifier.

Embodiment 2

[0106] Potassium acetate and potassium formate (4:6) and carbon black were added to tetrahydrofuran (the addition amount was 10 times that of the solid mixed material) at a ratio of 1:15, and stirred at 300 r / min for 30 min. Subsequently, tetrahydrofuran is removed at room temperature to obtain salt storage particles.

[0107] At room temperature, fully stir and dissolve asphalt, SIS and SBS in tetrahydrofuran (1:50:25), add the above-mentioned salt storage particles to it, stir at 100r / min for 30min, and fully stir and coat. Subsequently, it is dried at 60°C, and granulated and sieved to make the particle size of the black anti-icing ice modifier less than 5 mm. According to weighing calculation, relative to 100 parts by mass of salt storage particles, the coating material is about 120 parts by mass.

[0108] The dried material is cooled to room temperature, and then measured and packaged to obtain the black anti-coagulation ice modifier.

Embodiment 3

[0110] In addition to mixing calcium chloride, magnesium chloride and sodium chloride with carbon black in tetrahydrofuran, further adding pitch (pitch: carbon black = 1:1) and stirring at 1500r / min for 15min; and coating time from 30min Except for 3 minutes, a black anti-coagulation ice modifier was obtained in the same manner as in Example 1. According to weighing calculation, the coating material is about 67 parts by mass relative to 100 parts by mass of salt storage particles.

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Abstract

The invention relates to a long-acting slow-release black anti-freezing modifier for an asphalt pavement and a preparation method thereof. The black anti-freezing modifier includes salt storage particles including a metal salt and an adsorptive substance, and a coating material existing on the surface of the salt storage particles, wherein the coating material includes an asphalt material and an elastomer. The black anti-icing modifier is suitable for climate characteristics of various places in China, and has an excellent anti-icing property, slow release property and durability, so that theproblem of pavement reflection caused by salt precipitation and white exposure can be avoided even if the black anti-icing modifier is not uniformly mixed with an asphalt mixture or the formed anti-icing pavement is used for a long time.

Description

Technical field [0001] The invention relates to a long-acting slow-release black anti-icing modifier for asphalt pavement and a manufacturing method thereof. Background technique [0002] Snow icing on roads in winter has always been a problem that plagues road traffic safety. Snow and icing on the road surface will greatly reduce the anti-skid ability of the road surface, which not only weakens the traffic capacity of the road and is prone to vicious traffic accidents, but also damages the road and its auxiliary structures. In severe cases, it will cause traffic interruption and make people’s lives And production cannot be carried out normally, even endangering the safety of people’s lives and property. [0003] At present, the commonly used methods for removing ice and snow on roads are generally divided into two categories: passive suppression and active ice melting. Commonly used passive suppression deicing and snow removal measures mainly include the spreading of deicing age...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/36
CPCC04B40/0039C04B22/12C04B22/124C04B24/00C04B24/36C04B24/2688C04B24/26C04B24/04C04B14/022
Inventor 朱宝林惠嘉谷云辉刚红润王曈江睿南付立边莉
Owner 江苏山海新型建材有限公司
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