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Poly-vinylphosphonic acid and metal oxide or cermet or glass ionomer cement
Poly-vinylphosphonic acid and metal oxide or cermet or glass ionomer cement
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机译:聚乙烯基膦酸和金属氧化物或金属陶瓷或玻璃离聚物水泥
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摘要
A glass ionomer cement composition comprises poly(vinyl phosphonic acid) dissolved in its own mass of water; and (in treble the total mass of the solution) a powder, being glass or MgO or a cermet. The powder has to be deactivated so that the setting reaction with the acid is not too fast, and this is achieved either by a raised Si :Al ratio or by heat-treating.
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