| 摘要 |
<p>The fireproof viscose is obtained by adding silica to the viscose and subsequently fixing the silica to the fibre, such that the final fireproof fibre includes regenerated cellulose and a silicic polymer that confers fireproof properties on the fibres. Conventionally, the mixed viscose is regenerated using zinc sulphate, whilst the final fibre-washing phase is performed using sulphuric acid. Both zinc and sulphuric acid are products that are highly polluting to the environment. The invention consists in substituting aluminium sulphate for the zinc sulphate and substituting hydrogen peroxide or oxygenated water for the sulphuric acid, thereby considerably minimizing the polluting effect of the process.</p> |
