Obtaining and Use of Coumarone-Indene-Carbazole Resin as a Modifier of Road Petroleum Bitumen. 2. Setting the Type and Amount of Catalyst

,; Prysiazhnyi, Yuriy; Borbeyiyong, Guri Isaiah; ,; Korchak, Bohdan; ,; Pyshyev, Serhiy; ,; Shved, Maria; ,; Matlakh, Yuliia; ,

doi:10.23939/chcht17.02.450

Cited by 2 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The preparation of graphitized foam carbon represents a sustainable avenue for its utilization. Such carbon materials find widespread applications in metallurgy, construction, textiles, papermaking and transportation, exhibiting promising prospects [ 2 , 3 , 4 ]. The ordered nature of the carbonaceous intermediate phase formed during the pyrolysis of heavy tar is a crucial factor influencing the performance of graphitized foam carbon [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Pyrolytic Modification of Heavy Coal Tar by Multi-Polymer Blending: Preparation of Ordered Carbonaceous Mesophase

Zhang,

Liu,

Jia

et al. 2024

Polymers

View full text Add to dashboard Cite

In order to achieve the high-value utilization of heavy tar for the production of enhanced-performance graphite foam carbon, the carbon mesophase was ready from the heavy component of low-temperature coal tar, and the coal tar was modified by styrene-butadiene-styrene (SBS), polyethylene (PE) and ethylene-vinyl-acetate (EVA) copolymers. The order degree of the carbonite mesophase was analyzed using a polarizing microscope test, Fourier transform infrared spectroscopy and X-ray diffraction to screen out the most suitable copolymer type and addition amount. Furthermore, the mechanism of modification by this copolymer was analyzed. The results showed that adding SBS, PE and EVA to coal tar would affect the order of carbonaceous mesophase; however, at an addition rate of 10.0 wt.%, the linear-structure SBS copolymer with a styrene/butadiene ratio (S/B) of 30/70 exhibited the optimal degree of ordering in the carbonaceous mesophase. Its foam carbon prepared by polymer modification is the only one that forms a graphitized structure, with d002 of 0.3430 nm, and the maximum values of Lc and La are 3.54 nm and 2.22 nm, respectively. This is because, under elevated pressure and high-temperature conditions, SBS underwent chain scission, releasing a more significant number of methyl and other free radicals that interacted with the coal tar constituents. As a result, it reduced the affinity density of heavy coal tar molecules, enhanced fluidity, promoted the stacking of condensed aromatic hydrocarbons and increased the content of soluble carbonaceous mesophase, ultimately leading to a more favorable alignment of the carbonaceous mesophase.

show abstract

Section: Introductionmentioning

confidence: 99%

Pyrolytic Modification of Heavy Coal Tar by Multi-Polymer Blending: Preparation of Ordered Carbonaceous Mesophase

Zhang,

Liu,

Jia

et al. 2024

Polymers

View full text Add to dashboard Cite

show abstract

“…[14]. Much research on the fatigue and rutting problem of asphalt pavement design has been conducted [15][16][17][18][19][20][21]. At present, the gradation design methods are conducted based on practical experience and a large number of experiments, and they do not effectively solve in advance the rutting and fatigue performance of asphalt mixtures.…”

Section: Introductionmentioning

confidence: 99%

A Design Method on Durable Asphalt Pavement of Flexible Base on Anti-Rutting Performance and Its Application

Li,

Guo,

Lin

et al. 2023

Materials

View full text Add to dashboard Cite

To solve the durability of flexible base asphalt pavement, especially its anti-rutting problem, a design method on durable asphalt pavement of flexible base on anti-rutting performance was put forward in the paper, based on many experiments and calculations. Firstly, a method that asphalt could be selected according to penetration and the anti-rutting factor of its base asphalt was found, which solved the problem of the asphalt selection of the flexible base asphalt mixture design. Meanwhile, a method of skeleton-density structure gradation design was proposed based on the fractal void ratio of coarse aggregate, fractal volume of fine aggregate in coarse aggregate, penetration, fractal dimension of gradation particle size, and rutting tests, which effectively solved in advance the rutting and fatigue performance of flexible base asphalt mixtures. Then, on the basis of the fatigue damage, a calculation method of fatigue life was suggested, which solved the problem that the fatigue damage of asphalt mixtures rarely considered the combined effects of creep damage and fatigue damage. In addition, a calculation method of rutting was formulated based on vehicle dynamic load and ANSYS 16.0 software. Lastly, the feasibility of the design method on durable asphalt pavement of flexible base on anti-rutting performance was verified combining with the real engineering of a supporting project and several numerical calculations and tests.

show abstract

Obtaining and Use of Coumarone-Indene-Carbazole Resin as a Modifier of Road Petroleum Bitumen. 2. Setting the Type and Amount of Catalyst

Cited by 2 publications

References 11 publications

Pyrolytic Modification of Heavy Coal Tar by Multi-Polymer Blending: Preparation of Ordered Carbonaceous Mesophase

Pyrolytic Modification of Heavy Coal Tar by Multi-Polymer Blending: Preparation of Ordered Carbonaceous Mesophase

A Design Method on Durable Asphalt Pavement of Flexible Base on Anti-Rutting Performance and Its Application

Contact Info

Product

Resources

About