Preparation method of road sealant

A sealant and road technology, applied in the direction of chemical instruments and methods, adhesives, other rubber adhesives, etc., to achieve the effects of easy melting, increased mixing uniformity, low temperature resistance and elasticity

Inactive Publication Date: 2020-10-13
河南公路卫士交通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a preparation method of road sealant. The powder delivery mechanism is set, and the first blower is used to blow the powder to drive the powder into the mixing tank. The air cavity is pressurized to improve the powder feeding efficiency, and can prevent the powder from sticking to the inner pipe wall and prevent clogging; through the powder feeding mechanism, the environmental problems caused by the raised dust can be effectively prevented, and the dust can be prevented from entering the body and affecting health; The compounding process in the production process can fully integrate the rubber powder with the asphalt, and give full play to the high temperature resistance of the rubber powder

Method used

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  • Preparation method of road sealant
  • Preparation method of road sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] see figure 1 , a kind of preparation method of road sealant, described preparation method comprises the following steps:

[0050] S1: Add asphalt and softened oil to the mixing tank through the feeding port, turn on the heating controller to heat; then add rubber powder through the powder feeding mechanism, turn on the motor to stir for 20-30 hours, take it out from the feeding port, and keep warm for later use ;

[0051] S2: Stir and mix the remaining asphalt and styrene-styrene-butadiene-styrene block copolymer evenly.

[0052] S3: Add the product in S1 to S2, mix and stir at high speed.

[0053] S4: After adding elemental sulfur, bentonite, and calcium carbonate powder into the product in step S3 respectively through the powder delivery system and stirring, then stop heating, open the circulation pump and condenser, and continue to cool down through the condensing pipe.

[0054] S5: Cool down to 120-130°C, and get the final road sealant from the outlet. The parti...

Embodiment 2

[0061] see Figure 2-4 , a preparation device for road sealant; comprising a stirring tank 1, a storage tank 2, and a powder feeding mechanism; the side wall of the stirring tank 1 is a double-layer structure, and a heating chamber 9 is arranged between the inner wall and the outside of the stirring tank 1, The heating chamber 9 is provided with a heating medium; the heating chamber 9 is provided with a heating resistance wire 10, and the heating resistance wire 10 is evenly wound around the inner wall of the stirring tank 1; the heating resistance wire 10 is connected to a heating controller 11 to heat The controller 11 is heated on the outer wall of the stirring tank 1; the heating chamber 9 is connected with a condensing pipe 12 symmetrically on the upper and lower sides, and the condensing pipe 12 is arranged on the outside of the stirring tank 1, and the condensing pipe 12 is connected with a condenser 13 for condensing The other end of the device 13 is connected with a c...

Embodiment 3

[0067] A preparation method of road sealant, said preparation method may further comprise the steps:

[0068] S1: Add asphalt and softened oil to the mixing tank through the feeding port, turn on the heating controller to heat; then add rubber powder through the powder feeding mechanism, turn on the motor to stir for 20-30 hours, take it out from the feeding port, and keep warm for later use ;

[0069] S2: Stir and mix the remaining asphalt and styrene-styrene-butadiene-styrene block copolymer evenly.

[0070] S3: Add the product in S1 to S2, mix and stir at high speed.

[0071] S4: After adding elemental sulfur, bentonite, and calcium carbonate powder into the product in step S3 respectively through the powder delivery system and stirring, then stop heating, open the circulation pump and condenser, and continue to cool down through the condensing pipe.

[0072] S5: Cool down to 120-130°C, and get the final road sealant from the outlet.

[0073] The particle diameter of the...

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Abstract

The invention discloses a preparation method of a road sealant, which comprises the following steps: S1, adding asphalt and softening oil into a stirring tank, heating, adding rubber powder, and stirring; S2, stirring and uniformly mixing the remaining asphalt and the styrene-butadiene-styrene block copolymer; S3, adding a product obtained in the step S1 into the step S2, mixing and stirring at ahigh speed; S4, respectively adding elemental sulfur, bentonite and calcium carbonate powder into a product obtained in the step S3 through a powder conveying system, stirring, stopping heating, starting a circulating pump and a condenser, and cooling through a condensation pipe; and S5, after cooling, carrying out sub-packaging from a discharge port. According to the preparation method of the road sealant, the rubber powder can be fully and completely fused with the asphalt, and the high temperature resistance of the rubber powder is fully exerted. After the process, the product is fine and smooth in colloid and free of any granular sensation, and the melting temperature during construction is lower than that of a product without a shearing process.

Description

technical field [0001] The invention belongs to the field of road engineering equipment, in particular to a preparation method of road sealant. Background technique [0002] Cracks are the main form of early damage to the pavement. In order to prevent irreversible damage to the subgrade caused by water seeping into the substructure of the pavement, filling with road sealant is one of the commonly used remedial measures. [0003] During use, the sealant needs to withstand the test of high temperature in summer. Therefore, it is required that the sealant should have good high temperature resistance and good thermoplasticity. This requires adding a large amount of modified materials during production to meet the performance index requirements. However, two problems were found in the actual construction and use of the qualified sealant: first, because the sealant has a high softening point, it is difficult to melt during construction, and the melting time is long, which increa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J195/00C09J191/00C09J153/02C09J121/00C09J11/04B01F7/24B01F15/02B01F15/06
CPCC09J195/00C09J11/04C08L2205/035C08L2201/08C08K2201/005C08K2003/265B01F27/922B01F35/717B01F35/92C08L91/00C08L53/02C08L21/00C08K3/06C08K3/346C08K3/26
Inventor 张自鹏马峻波李祥忠孟令芳李庆军王定文
Owner 河南公路卫士交通科技有限公司
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