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Anti-rutting additive containing direct coal liquefaction residue as well as preparation method and application thereof

An anti-rutting additive, a technology of direct coal liquefaction, applied in building components, building insulation materials, buildings, etc., to achieve good low-temperature cracking performance, improve stability, and reduce segregation.

Active Publication Date: 2015-01-07
RES INST OF HIGHWAY MINIST OF TRANSPORT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] There is no report on the preparation of anti-rutting additives from coal direct liquefaction residue and thermoplastic elastomers

Method used

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  • Anti-rutting additive containing direct coal liquefaction residue as well as preparation method and application thereof
  • Anti-rutting additive containing direct coal liquefaction residue as well as preparation method and application thereof
  • Anti-rutting additive containing direct coal liquefaction residue as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Extrude 4000g of TPE, 2000g of coal direct liquefaction residue, 480g of naphthenic oil, and 60g of C5 petroleum resin at 120°C using a twin-screw extruder (Zhangjiagang Chuangjia Machinery Co., Ltd., SJ series), and then pass through an air-cooled mold Noodle granulation equipment (Nanjing Guangda Rubber and Plastic Machinery Factory) granulated to obtain anti-rutting additives.

[0042] The particle sizes obtained after granulation are all less than 4mm, and the melt index is 3.5g / 10min (190°C, 2.16kg). The density is 1.085g / cm 3 .

Embodiment 2

[0044]Extrude SBS3200g, coal direct liquefaction residue 2000g, rubber oil 480g, C9 petroleum resin 460g at 120°C with a single-screw extruder (Zhangjiagang Chuangjia Machinery Co., Ltd., SJ series), and then air-cool the die surface Pelletizing equipment (Nanjing Guangda Rubber and Plastic Machinery Factory) granulated to obtain anti-rutting additives.

[0045] The particle sizes obtained after granulation are all less than 4mm, and the melt index is 3.0g / 10min (190°C, 2.16kg). The density is 1.1.05g / cm 3 .

Embodiment 3

[0047] Extrude 2000g of SBS, 2000g of coal direct liquefaction residue, 480g of rubber oil, and 480g of C9 petroleum resin at 120°C using a single-screw extruder (Zhangjiagang Chuangjia Machinery Co., Ltd., SJ series), and then cut through the air-cooled die surface. Granulation equipment (Nanjing Guangda Rubber and Plastic Machinery Factory) was used to granulate to obtain anti-rutting additives.

[0048] The particle sizes obtained after granulation are all less than 4mm, and the melt index is 3.8g / 10min (190°C, 2.16kg). The density is 1.045g / cm 3 .

[0049] The melt index of the anti-rutting additive obtained in Examples 1-3 was tested. And put the above additives into the asphalt mixture to observe the dispersion uniformity, see Table 2.

[0050] Table 2 Melt index and dispersibility results

[0051]

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Abstract

The invention belongs to the field of road engineering and provides an anti-rutting additive containing direct coal liquefaction residue. The anti-rutting additive containing direct coal liquefaction residue comprises the direct coal liquefaction residue, a thermoplastic elastomer and an additive, wherein the weight ratio of the direct coal liquefaction residue to the thermoplastic elastomer is 1 to (1-4), and the additive accounts for 5-20% of the sum of the weights of the direct coal liquefaction residue and the thermoplastic elastomer. Based on resource conservation and environmental friendliness, comprehensive advantages of the direct coal liquefaction residue and macromolecules are utilized, so that the prepared asphalt mixture has excellent anti-rutting performance and good low-temperature performance and durability, construction cost is reduced while anti-rutting performance of a road is improved when the prepared asphalt mixture is applied to a middle surface layer, and service life of the road is prolonged.

Description

technical field [0001] The invention belongs to the field of road engineering, and in particular relates to an asphalt mixture additive containing thermoplastic elastomer polymers, a preparation method and application thereof. Background technique [0002] Asphalt pavement is crushed by heavy-duty vehicles for a long time, and rutting will occur, which will have a negative impact on traffic safety and transportation energy consumption. Adding anti-rutting additives to asphalt mixture is an effective way to solve the above problems. At present, the anti-rutting agent products successfully used in the world include PR series products produced in France, Duroflex and Lufu 8000 asphalt mixture additives in Germany, and SEAM sulfur asphalt modifier produced by Shell in the United States. The high price of the above products has caused the cost of road construction to increase significantly, and its popularization and application has been restricted. In recent years, domestic re...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L57/02C08L21/00C08L23/06C08L95/00C08K5/01C04B24/36C04B24/26C04B26/26
Inventor 曹东伟季节张海燕
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
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