| 摘要 |
<p>Coarsely comminuted composited material of metal and plastic is exposed to a solution attacking metal and causing a weight loss of 0.05 - 50 g/m2 metal per day, Corrosive solutions are used, pref. 5% aqs. NaCl or 5% aqs. NH3 solution. Solutions of halides and sulphides of alkali(ne earth) metals can also be used. In prefd. process, coarsely ground Al and polyolefin laminates are exposed to solution with oxidising activity on adhesive layer between Al and polyolefin, pref. fuming HNO3.</p> |
