Bond strength promoting surface treatment of plastics under mold conditions, e.g. of polyamides, -styrenes - vinylchlorides, and partic. polyesters avoids hitherto necessary severe, structure damaging treatments, and increases, e.g. peel strength of Al-foil coating bonded with epoxy resin to PET by 20% on average. Acidic KMnO4 sol. is used for such treatment to form a surface film of 2 - 14, pref. 4 - 10 mu g/cm2 Mn in the Mn-oxides deposited by immersion of the plastic in 2 - 6% KMnO4 sol. in 1 - 10, pref. 1 - 5% H2SO4 at 20 - 100, pref. 60 - 80 degrees C for generally 5 secs. to 15 mins. Laminated, or metal foil covered products obtained by bonding such treated plastics are claimed.
展开▼
机译：粘结强度可在模具条件下促进塑料的表面处理，例如聚酰胺，-苯乙烯-氯乙烯和颗粒。聚酯避免了迄今为止必需的严重的结构破坏性处理，并增加了例如与环氧树脂粘合到PET的铝箔涂层的剥离强度平均降低20％。酸性KMnO4溶胶。用于这种处理以形成2-14（优选）的表面膜。通过将塑料浸入2％至6％的KMnO4溶胶中沉积的Mn氧化物中的Mn含量为4-10 g / cm2。在1-10，偏好1-5％H2SO4，20-100，优选。 60-80摄氏度，通常5秒钟。到15分钟要求保护通过层压这种处理过的塑料而获得的层压或金属箔覆盖的产品。
展开▼
