| abstract |
The invention provides a preservative for bauxite-based refractory plastic, which consists of a liquid component A and a powder component B; the component A comprises the following components in parts by weight: 500-700 parts of hydroxyl-terminated polydimethylsiloxane, 100-50 parts of plasticizer, 100-200 parts of crosslinking monomer, 2 parts of polyhydroxy oligomer and 0.5-1.5 parts of catalyst; the component B comprises 30-50 parts of water-absorbing polymer and 300-500 parts of polyhydroxy high polymer; the polyhydroxy high polymer is a mixture of any two of cage-type silsesquioxane, trapezoidal silsesquioxane and hydroxyl MQ resin. The preservative can prevent impurities in the raw materials from reacting with the binding agent on one hand, and can keep moisture and prevent free water from volatilizing on the other hand, so that the preservative has the advantages of long preservation time and good preservation effect. |