Influences of Additives on the Adhesion of Graphite at High Temperatures

Abstract

Abstract: Based on the high temperature adhesive (HTA) composed of phenol-formaldehyde resin(PF) and boron carbide
(B₄C) ceramic powders, new high temperature adhesives (HTAs) were prepared by using secondary additives, aluminium oxide (Al₂O₃) or silicon (Si) or
fumed silica (SiO₂) as additives to modify the properties of the adhesives. Graphite components bonded by the above adhesives were heat-treated at
different temperatures ranged from 200℃ to 1500℃. Subsequently their adhesive shear strengths were tested at room temperature.
Results show that the additives have an obvious influence on the adhesion properties of bonded graphite components. In additional, fumed silica
has a great effect on improving the adhesion property of HTA, and the adhesive consisting of phenol-formaldehyde resin, boron carbide and
fumed silica has satisfied adhesive strength.

Key words: high-temperature adhesives, additives, adhesive strength, modify

CLC Number:

TQ433

WANG Ji-Gang,GUO Quan-Gui,LIU Lang,SONG Jin-Ren. Influences of Additives on the Adhesion of Graphite at High Temperatures[J]. Journal of Inorganic Materials.

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Influences of Additives on the Adhesion of Graphite at High Temperatures

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