A kind of high softening point asphalt, its preparation method and application

Abstract

The invention discloses a high-softening-point asphalt as well as a preparation method and an application thereof. Medium-temperature asphalt is adopted as a raw material to prepare high-softening-point asphalt by adopting an air oxidation method; then partial light components in the high-softening-point asphalt are removed by adopting a vacuumizing method, and finally the high-softening-point asphalt suitable for preparing foam carbon or spinning asphalt can be produced. The softening point of the high-softening-point asphalt is 200 to 280 DEG C, the content of an n-heptane soluble substance (HS) is less than 10 percent, the content of a methylbenzene soluble substance (TS) is less than 20 percent, the content of methylbenzene insoluble-pyridine soluble sustancce (TI-PS) is 9 to 20 percent, the content of pyridine insoluble-quinoline soluble (PI-QS) is 5 to 15 percent, and the content of quinoline insoluble substance (QI) I 50 to 70 percent. The high-softening-point asphalt is not only rich in raw materials and low in cost, but also narrow in group composition distribution and suitable for being used as a raw material for high-performance foam carbon and carbon fibers.

Description

technical field

[0001] The invention relates to a high softening point asphalt and the preparation technology of the high softening point asphalt. It also relates to the application of the high softening point pitch in the preparation of foam carbon and carbon fiber. Background technique

[0002] As a honeycomb carbonaceous functional material, foam carbon not only has high strength, low thermal conductivity, low density, low thermal expansion coefficient, high temperature resistance, oxidation resistance, acid resistance, alkali resistance, low water absorption, no volatile substances, no Toxic gas, and has good formability and processability. Therefore, foamed carbon can be widely used as A-level energy-saving building insulation materials, aerospace insulation materials, high-temperature pipeline insulation materials, and biological solid bacteria carrier materials for biological sewage treatment.

[0003] At present, the raw materials used to prepare foamed carbon main...