Coal pitch suitable for paving heavy traffic roads and preparation method thereof

A technology of coal tar pitch and heavy traffic, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems of no bitumen data effects, etc., and achieve the effects of ensuring production safety, short production cycle and small investment

Inactive Publication Date: 2017-01-11
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN102924935 Grinding and shearing low-temperature coal tar pitch and coking solvent oil, anthracene oil, SBS, waste rubber powder, regenerated rubber, neoprene rubber, sulfu

Method used

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  • Coal pitch suitable for paving heavy traffic roads and preparation method thereof
  • Coal pitch suitable for paving heavy traffic roads and preparation method thereof
  • Coal pitch suitable for paving heavy traffic roads and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take 100g of coal tar pitch and add it to the reaction kettle, raise the temperature to 115°C to completely melt the coal tar pitch, add 40g of aromatic oil as a diluent, and stir at a speed of 700rpm for 1 hour; keep the temperature and speed constant, add 0.04g of hindered phenolic Oxygen 1076, add 0.8g hindered amine anti-aging agent DQC after 0.5 hours, continue to stir for 1.5 hours, cool and discharge to obtain the aging-resistant coal tar pitch product.

[0030] The softening point, penetration, ductility and aging resistance are tested according to the methods stipulated in "GBT 5180-2010 Petroleum Asphalt for Heavy Traffic Roads" and "JTG F40-2004 Technical Specifications for Construction of Highway Asphalt Pavement".

Embodiment 2

[0032] The implementation steps are the same as in Embodiment 1. The difference is: use residual oil of equal quality to replace aromatic oil, and hindered phenol antioxidant 1520 to replace 1076.

[0033] The performance evaluation method is the same as in Example 1.

Embodiment 3

[0035] The implementation steps are the same as in Embodiment 1. The difference is: 0.10 g of hindered phenol antioxidant 1520 replaces 0.03 g of hindered phenol antioxidant 1076.

[0036] The performance evaluation method is the same as in Example 1.

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Abstract

The invention relates to an ageing-resistant coal pitch suitable for paving heavy traffic roads and a preparation method thereof. According to the pitch, the byproduct medium-temperature coal pitch in the coal tar industry serves as a main raw material, a high-boiling-point diluent serves as an auxiliary material, and a hindered phenol antioxidant and a hindered amine antiager serve as modifiers, so that the ageing resistance of the coal pitch is effectively improved. The chemically-modified environment-friendly coal pitch is subjected to compound modification with the high-boiling-point diluent, the hindered phenol antioxidant and the hindered amine antiager, and the softening point, the needle penetration, the ductility and the needle penetration ratio can meet the technical requirement of pitch No.70 in GBT 5180-2010 heavy traffic road petroleum pitch.

Description

technical field [0001] The invention belongs to the technical field of chemical modification of heavy coal tar, in particular to an aging-resistant coal tar pitch suitable for laying heavy traffic roads and a preparation method thereof. Background technique [0002] Coal tar pitch, also known as heavy coal tar and coal tar pitch, is the residue after extraction of light oil, phenol oil, naphthalene oil, washing oil and anthracene oil from coal tar, generally accounting for more than 50% of the total mass of coal tar . Compared with petroleum asphalt, coal asphalt has higher polarity and better wetting and bonding ability to sand and gravel materials. The pavement paved with coal asphalt has a large friction coefficient, high driving safety, anti-deformation, anti-wear, heavy pressure, Excellent oil corrosion resistance. At the same time, due to the high aromaticity of coal tar pitch, the temperature sensitivity of coal tar pitch is greater than that of petroleum pitch, whi...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L91/00C08K5/134C08K5/372C08K5/3437
CPCC08L95/00C08L2201/08C08L91/00C08K5/1345C08K5/375C08K5/3437
Inventor 张福强马瑞辉高丽雅韩双福陈韫廷
Owner HEBEI UNIV OF TECH
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