| 摘要 |
A finishing composition and the use of the composition for finishing fibre-glass fabric are disclosed. On the basis of dry weight, the composition contains about 60-95 % by weight of starch, about 4-30 % by weight of a hydrophobicity-imparting agent, about 1-10 % by weight of a metallic salt, and about 1-5 % by weight of citric acid. Preferably, the hydrophobicity-imparting agent is a paraffin wax, and the metallic salt is an aluminium salt, such as aluminium hydroxy chloride. The composition preferably is a two-component composition, in which the starch is combined with the citric acid to form a first component, and the paraffin wax is combined with the metallic salt to form a second component. After mixing of the components and dilution by water, the ready-to-use finishing composition is a suspension of 10-15 % by weight. Advantageously, the composition is used for finishing so-called bituminous fabric, i.e. fibre-glass fabric used for making roofing felt. |
