Road asphalt modifier containing double-ended hydroxyl styrene-butadiene rubber and preparation and usage method

A technology of double-terminated hydroxybutylbenzene and terminated hydroxybutadiene is applied in the field of asphalt modifiers, which can solve the problems of endangering the health of operators, high energy consumption of shearing equipment, and difficulty in ensuring the stability of asphalt, and achieve the modification effect. Significant, low residual monomer content, low temperature performance and improved water stability

Active Publication Date: 2016-11-09
浙江维克森沥青有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN03113237.5 discloses a modified asphalt made of styrene-ethylene-butylene-styrene block copolymer (SEBS) and asphalt at 160-180°C for 30-50 minutes at high speed, but The stability of asphalt made by this method is difficult to guarantee
CN200410053726.8 invented a kind of modified bitumen, the bitumen improver that is made up of parts such as SBS, polypropylene and fiber is modified, and the penetration, ductility and softening point of bitumen have been greatly improved, but The improvement effect still needs to be improved
[0005] In addition, because currently used polymers such as SBS are not easily compatible with asphalt, special shearing equipment and high energy consumption are required, and the workability of construction is poor, and a lot of waste smoke and gas will be generated during construction. Cause environmental pollution and endanger the health of workers

Method used

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  • Road asphalt modifier containing double-ended hydroxyl styrene-butadiene rubber and preparation and usage method
  • Road asphalt modifier containing double-ended hydroxyl styrene-butadiene rubber and preparation and usage method
  • Road asphalt modifier containing double-ended hydroxyl styrene-butadiene rubber and preparation and usage method

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Effect test

Embodiment 1

[0038] The invention provides a road asphalt modifier containing double-ended hydroxy-butadiene styrene-butadiene liquid rubber, which is composed of the following components, all of which are parts by weight:

[0039] 60 parts of double-ended hydroxybutadiene liquid rubber;

[0040] 8 parts of nanometer calcium carbonate;

[0041] 3 parts of white carbon black;

[0042] 6 parts of nano silicon dioxide;

[0043] Diatomaceous earth 5 parts.

[0044] The road asphalt improver containing double-ended hydroxy-butadiene styrene-butadiene liquid rubber of the present invention is realized through the following preparation process:

[0045] (1) Styrene purification: Distill styrene under reduced pressure at 40°C and -0.1MPa pressure, take the middle 80% fraction, add 0.05wt% desiccant calcium hydride and store it at low temperature for later use.

[0046] (2) Connect the stainless steel pressure-resistant polymerization kettle with the vacuum pump / argon system, vacuumize and fill...

Embodiment 2

[0054] The invention provides a road asphalt modifier containing double-ended hydroxy-butadiene styrene-butadiene liquid rubber, which is composed of the following components, all of which are parts by weight:

[0055] 70 parts of double-ended hydroxybutadiene liquid rubber;

[0056] 10 parts of nano calcium carbonate;

[0057] White carbon black 5 parts;

[0058] 10 parts of nano silicon dioxide;

[0059] Diatomaceous earth 6 parts.

[0060] The road asphalt improver containing double-ended hydroxy-butadiene styrene-butadiene liquid rubber of the present invention is realized through the following preparation process:

[0061] (1) Styrene purification: Distill styrene under reduced pressure at 50°C and -0.09MPa pressure, take the middle 80% fraction, add 0.1wt% desiccant calcium hydride and store it at low temperature for later use.

[0062] (2) Connect the stainless steel pressure-resistant polymerization kettle with the vacuum pump / argon system, vacuumize and fill with ...

Embodiment 3

[0070] The invention provides a road asphalt improver containing double-ended hydroxy-butadiene styrene-butadiene liquid rubber, which consists of the following parts, all of which are parts by weight:

[0071] 80 parts of double-ended hydroxybutadiene liquid rubber;

[0072] 15 parts of nano calcium carbonate;

[0073] 7 parts of white carbon black;

[0074] 8 parts of nano silicon dioxide;

[0075] Diatomaceous earth 8 parts.

[0076] The road asphalt improver containing double-ended hydroxy-butadiene styrene-butadiene liquid rubber of the present invention is realized through the following preparation process:

[0077] (1) Styrene purification: Distill styrene under reduced pressure at 60°C and -0.09MPa pressure, take the middle 80% fraction, add 0.08wt% desiccant calcium hydride and store it at low temperature for later use.

[0078] (2) Connect the stainless steel pressure-resistant polymerization kettle with the vacuum pump / argon system, vacuumize and fill with argon...

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Abstract

The invention relates to a road asphalt modifier containing double-ended hydroxyl styrene-butadiene rubber and a preparation and usage method and belonging to the technical field of asphalt modifiers. The main modifier containing active-terminated hydroxyl butylbenzene liquid rubber serving as road asphalt is synthesized, can effectively form a crosslinked network structure with base asphalt to form a novel rubber structure system, so that the properties of the asphalt are improved compressively. Under the synergistic effect of other components, the road asphalt modifier containing the double-ended hydroxyl styrene-butadiene rubber is excellent in property, can remarkably improve the properties of the base road asphalt and has very good stability. The road asphalt modifier is low in adding amount, economic and environmentally friendly, and the adding amount of 3-5% by weight can meet the improvement requirements. The preparation method is simple, convenient, easy to operate and suitable for large-scale production and application, and the yield is above 95%.

Description

technical field [0001] The invention relates to a road asphalt modifier and a preparation and use method thereof, in particular to a road asphalt modifier containing double-ended hydroxybutadiene styrene-butadiene liquid rubber and a preparation and use method thereof, belonging to the technical field of asphalt modifiers. Background technique [0002] Ordinary road asphalt has poor temperature sensitivity, poor elasticity and anti-aging performance due to its own composition and structure. It is easy to flow at high temperature and brittle at low temperature. Moreover, the increase of time, the increase of axle load, the increase of traffic flow, and the appearance of bad weather conditions make it difficult for ordinary road asphalt to meet the requirements of high-grade roads, and it needs to be modified to improve its performance. [0003] Asphalt modified materials mainly include additives, mineral fillers and polymers. Mineral fillers, such as diatomaceous earth, lime...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L15/00C08K3/26C08K3/36C08K3/34C08F212/08C08F236/10C08C19/00
CPCC08C19/00C08F212/08C08K3/26C08K3/34C08K3/36C08K2003/265C08K2201/011C08K2201/014C08L95/00C08F236/10C08L15/00
Inventor 姚慧玲
Owner 浙江维克森沥青有限公司
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