Syntheses and properties of polycondensed fused polynuclear aromatics resin from naphthalene and its derivatives.

Ota, Michiya; Ota, Etsuro; Ōtani, Sugio; Kojima, Akira

doi:10.1246/nikkashi.1988.106

Cited by 6 publications

(2 citation statements)

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“…Otani et al14 disclosed that a raw material containing one or more condensed polynuclear aromatic compounds with at least two condensed benzene rings could react with a crosslinking agent with one or more aldehyde groups catalyzed by acid. Petroleum pitches are mixtures of various compounds including mainly condensed polynuclear aromatic hydrocarbons with three to five condensed benzene rings.…”

Section: Resultsmentioning

confidence: 99%

Preparation and characterization of petroleum‐pitch‐based carbon aerogels

Zeng

2008

J of Applied Polymer Sci

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Carbon aerogels were prepared by the solgel polymerization of petroleum pitches followed by ambient-pressure drying and then carbonization. Furfural and sulfuric acid were found to be the best crosslinking agent and best catalyst for the reaction system, respectively. It was necessary to add acetic acid as a cosolvent, and the volume ratio of toluene to acetic acid played an important role in the mass densities of the samples. The average diameters of the nanonetwork particles of the typical carbon aerogels thus obtained were about 30-40 nm, and their surface areas were over 360 m 2 /g.

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Section: Resultsmentioning

confidence: 99%

Preparation and characterization of petroleum‐pitch‐based carbon aerogels

Zeng

2008

J of Applied Polymer Sci

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“…have ever made the chemistry to synthesise the condensed polynuclear aromatic (COPNA) resin in 1989 using monomeric polyaromatic hydrocarbon via a polymerization reaction [4][5] . They found that COPNA resin can be used for preparation of friction materials, lubrication materials and carbon fiber owning to its excellent property of selflubrication, high heat-resistance and the endophilicity to the carbon materials [6][7][8] .…”

Section: Introductionmentioning

confidence: 99%

Preparations and Tribological Properties of COPNA Copolymer Materials

Zhang

Yue

Qin

et al. 2015

Procedia Engineering

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The cured condensed polynuclear aromatic (COPNA) resin has excellent thermal stability and self-lubricating property which is popular for friction materials. However the cured resin has brittleness and poorly molding process due to its high cross-linking density. In this paper, the allyl-COPNA-BMI copolymer resin is prepared via a solution polymerization method, its structure, and its mechanical and tribological properties are investigated with FT-IR, SEM, TGA techniques. The copolymer anti-friction and anti-wear behaviors are tuned by varying the N,N'-4,4'-diphenylmethane-bismaleimide(BMI) monomer loading. The mechanical properties of the copolymer is the best when the BMI loading is 20 wt% upon these results. The tensile and impact strength of the copolymer/BMI 20 wt% is 12 MPa and 13.9 MPa, respectively. The lowest friction coefficient of copolymer/BMI 30wt% is 0.27, and its abrasion rate is 0.601510 -6 mm 3 /Nm. The initial thermal decomposition temperature of the copolymer/BMI 40wt% is 400 o C and 46.5 wt% of char residue ratio at 642 o C. The copolymer resins exhibit good thermal stability, abrasive resistance and mechanical properties compared to the pure COPNA.

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