Flame-retardant coating material for tunnel pavement and preparation method thereof

A coating material and flame-retardant technology, which is applied in the field of flame-retardant coating material for tunnel pavement and its preparation, can solve the problems of application limitation, large smoke generation, etc., achieve good workability, improve stability, The effect of suppressing the spread of combustion

Active Publication Date: 2021-09-03
SHANDONG JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Phosphorus-based flame retardants are mostly liquid at room temperature and have a large amount of smoke. It requires a large amount of H and O elements in the flame-retardant structure to dehydrate and form a carbonized layer, so its application is greatly limited.

Method used

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  • Flame-retardant coating material for tunnel pavement and preparation method thereof
  • Flame-retardant coating material for tunnel pavement and preparation method thereof
  • Flame-retardant coating material for tunnel pavement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Embodiment 1: Preparation of modified masterbatch.

[0079] Table 3 Modified masterbatch material ratio and parameter control

[0080]

[0081] Material Description:

[0082] Oleic acid: molecular weight 282.46, melting point 13-14°C;

[0083] Palmitoleic acid: molecular weight 254.41, melting point 0.5°C;

[0084] Soybean oleic acid: 280≤molecular weight≤284, melting point 15℃.

[0085] 【Preparation】

[0086] Add the main solvent 2 and anti-seepage agent in the formula amount into the small reaction kettle, stir at 50°C for 20 minutes to dissolve completely, then add the silane coupling agent and modifier in turn, maintain the temperature and continue stirring for 40 minutes, and naturally drop to After room temperature, ultrasonically treat for a certain period of time to obtain activated modified masterbatches, which are respectively recorded as masterbatch 1, masterbatch 2, masterbatch 3, masterbatch 4, masterbatch 5, masterbatch 6, masterbatch 7, and masterb...

Embodiment 2

[0087] Example 2: Preparation of flame-retardant coating material for tunnel pavement.

[0088] Table 4 Material ratio of coating materials

[0089]

[0090] Material Description:

[0091] Qingchuan Rock Asphalt: Penetration 3 (0.1mm) at 25°C, softening point 220°C;

[0092] 50# asphalt: at 25°C, the penetration is 45 (0.1mm), and the softening point is 67°C;

[0093] 40# asphalt: at 25°C, the penetration is 38 (0.1mm), and the softening point is 70°C;

[0094] 30# asphalt: at 25°C, the penetration is 28 (0.1mm), and the softening point is 72°C;

[0095] 【Preparation】

[0096] A1. Heating the asphalt binder to 135°C, and then cooling to maintain a fluid and transportable state to obtain component A;

[0097] A2. Mix the main solvent 1 with the modified masterbatch at a temperature of 50°C and stir evenly to obtain component B;

[0098] A3. Slowly add component A to the main mixer of component B and mix, then add stabilizer, drier, and functional filler in turn, and st...

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Abstract

The invention discloses a flame-retardant coating material for a tunnel pavement and a preparation method thereof, and belongs to the field of road engineering. The coating material is prepared from a main solvent I, an asphalt cement, a functional filler, a modified master batch, a stabilizer and a drier according to a specific ratio; and the Brookfield viscosity of the coating material at 20 DEG C is 2000-4000 cPs, and the limit oxygen index of a residue test after the coating is evaporated is greater than or equal to 27%. Compared with the prior art, the coating material provided by the invention can greatly improve the flame retardance, water resistance, skid resistance and wear resistance of a road surface, improves the safety of driving in a tunnel, is simple and convenient in implementation process and stable in performance, and has very good popularization and application values.

Description

technical field [0001] The invention relates to the field of road engineering, and specifically provides a flame-retardant coating material for tunnel pavement and a preparation method thereof. Background technique [0002] With the continuous improvement of my country's road network, road construction has been vigorously developed, and the mileage of road tunnels has also continued to increase. Because asphalt pavement has excellent road performance and is easy to maintain, it is widely used in road construction, and the tunnel space is relatively closed. The ventilation conditions are relatively poor, and asphalt is a flammable material. If a traffic accident occurs in the tunnel and the asphalt pavement catches fire, the poisonous gas, smoke and heat generated by the combustion will be difficult to dissipate, making it difficult for people to escape, often resulting in catastrophic accidents. Therefore, it is very important to study the flame retardant technology of tunnel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D195/00C09D5/18C09D7/61C09D7/65
CPCC09D195/00C09D5/18C09D7/61C09D7/65C08L2205/035C08K2003/2227C08L97/02C08L25/10C08L53/02C08K3/22C08K5/03C08K3/34C08K3/30C08K13/02C08L11/02
Inventor 王君邱昌春王春林李振丰张建民于建国
Owner SHANDONG JIAOTONG UNIV
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