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Road asphalt modifying agent containing modified styrene-butadiene-styrene block copolymer, and preparation method of road asphalt modifying agent

A technology of styrene block and road asphalt, which is applied in the direction of building structure, building components, building insulation materials, etc., can solve the problems that it is difficult to ensure the stability of modified asphalt performance, and achieve the reduction of penetration and increase of low temperature ductility , good storage stability effect

Active Publication Date: 2016-11-30
浙江程路沥青技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In ZL200810037455.5, modifier SBS particles are added to road asphalt through physical blending. SBS absorbs aromatic hydrocarbons and colloids in asphalt to form a new colloidal structure system. However, high-speed shearing is required when SBS and asphalt are blended. Cut, it is still difficult to guarantee the stability of modified asphalt performance

Method used

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  • Road asphalt modifying agent containing modified styrene-butadiene-styrene block copolymer, and preparation method of road asphalt modifying agent
  • Road asphalt modifying agent containing modified styrene-butadiene-styrene block copolymer, and preparation method of road asphalt modifying agent
  • Road asphalt modifying agent containing modified styrene-butadiene-styrene block copolymer, and preparation method of road asphalt modifying agent

Examples

Experimental program
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Effect test

Embodiment 1

[0055] The invention provides a road asphalt modifier containing modified styrene-butadiene-styrene block copolymer, which is composed of the following components, all of which are parts by weight:

[0056] 60 parts of modified styrene-butadiene-styrene block copolymers;

[0057] 20 parts of lignin fiber;

[0058] 3 parts of ethoxyquinoline;

[0059] 2 parts of tert-butylhydroquinone;

[0060] 2 parts of sodium dodecylbenzenesulfonate;

[0061] Sodium methylcellulose 2 parts;

[0062] 1 part polyvinyl alcohol;

[0063] 0.05 part of bismaleimide;

[0064] Ethylenediamine 0.05 parts.

[0065] The road asphalt modifier containing modified styrene-butadiene-styrene block copolymer of the present invention is prepared by the following preparation process:

[0066] (1) Styrene purification: Pass styrene through a drying tower filled with 4A molecular sieve and potassium hydroxide to remove moisture and polymerization inhibitor.

[0067] (2) Purification of butadiene: The liq...

Embodiment 2

[0076] The invention provides a road asphalt modifier containing modified styrene-butadiene-styrene block copolymer, which is composed of the following components, all of which are parts by weight:

[0077] 70 parts of modified styrene-butadiene-styrene block copolymers;

[0078] 30 parts of lignin fiber;

[0079] 2 parts of ethoxyquinoline;

[0080] 1 part of tert-butylhydroquinone;

[0081] 3 parts of sodium dodecylbenzenesulfonate;

[0082] 3 parts sodium methylcellulose;

[0083] 2 parts polyvinyl alcohol;

[0084] 0.08 part of bismaleimide;

[0085] Ethylenediamine 0.06 part.

[0086] The road asphalt modifier containing modified styrene-butadiene-styrene block copolymer of the present invention is prepared by the following preparation process:

[0087] (1) Styrene purification: Pass styrene through a drying tower filled with 4A molecular sieve and potassium hydroxide to remove moisture and polymerization inhibitor.

[0088] (2) Purification of butadiene: The liqu...

Embodiment 3

[0097] The invention provides a road asphalt modifier containing modified styrene-butadiene-styrene block copolymer, which is composed of the following components, all of which are parts by weight:

[0098] 80 parts of modified styrene-butadiene-styrene block copolymers;

[0099] 25 parts of lignin fiber;

[0100] 4 parts of ethoxyquinoline;

[0101] 3 parts of tert-butylhydroquinone;

[0102] 5 parts of sodium dodecylbenzenesulfonate;

[0103] 4 parts sodium methylcellulose;

[0104] 3 parts of polyvinyl alcohol;

[0105] 1 part of bismaleimide;

[0106] Ethylenediamine 1 part.

[0107] The road asphalt modifier containing modified styrene-butadiene-styrene block copolymer of the present invention is prepared by the following preparation process:

[0108] (1) Styrene purification: Pass styrene through a drying tower filled with 4A molecular sieve and potassium hydroxide to remove moisture and polymerization inhibitor.

[0109] (2) Purification of butadiene: The liquefie...

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Abstract

The invention relates to a road asphalt modifying agent containing a modified styrene-butadiene-styrene block copolymer, and a preparation method of the road asphalt modifying agent, and belongs to the technical field of a road asphalt modifying agent. According to the road asphalt modifying agent containing the modified styrene-butadiene-styrene block copolymer, and the preparation method of the road asphalt modifying agent disclosed by the invention, a modified styrene-butadiene-styrene block copolymer is synthesized to be used as a main modifying agent of road asphalt, and lignin fibers, an antioxidant, a stabilizing agent, a cross-linking agent and other modified addition agents are combined with the modified styrene-butadiene-styrene block copolymer for performing chemical modification on base asphalt, so that the needle penetration, the softening point and the ductility of the base asphalt can be effectively improved. The addition quantity of the road asphalt modifying agent disclosed by the invention is low, when the addition quantity is 3-7wt%, improvement requirements can be met, and the road asphalt modifying agent is economic and environmental-friendly. The preparation method is simple and easy to operate, the operation is convenient, the yield is as high as 99.1% or above, and the road asphalt modifying agent is suitable for large-scale production and application.

Description

technical field [0001] The invention relates to a road asphalt modifier and a preparation method thereof, in particular to a road asphalt modifier containing a modified styrene-butadiene-styrene block copolymer and a preparation method thereof, belonging to road asphalt modification field of agent technology. Background technique [0002] With the rapid development of our country's national economy, the traffic volume of roads has increased rapidly, and road transportation has become increasingly busy. Although many highway asphalt pavements use heavy traffic road asphalt or imported asphalt, they still cannot meet the needs. Rutting, cracking, potholes and other diseases on the asphalt pavement are very serious. The reason is that in terms of the performance of asphalt itself, it is a material that is very sensitive to temperature, and its state and performance will change with the change of temperature. When the temperature rises, the asphalt will become softer and thin...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L97/00C08L1/28C08L29/04C08K5/3437C08K5/13C08K5/42C08K5/3415C08K5/17C08F297/04
CPCC08F297/048C08L53/025C08L95/00C08L2201/08C08L2205/035C08L2205/16C08L97/005C08L1/28C08L29/04C08K5/3437C08K5/13C08K5/42C08K5/3415C08K5/17
Inventor 姚慧玲
Owner 浙江程路沥青技术有限公司
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