Minimum surface treatments for adhesively bonded repairs
Abstract The environmental durability of adhesive bonds for both epoxy and acrylic adhesives has been shown to be improved by the use of a silane solution together with a primer. Durability approaching that of acid anodization treatments can be obtained from silane plus primer treatments together with considerable savings in the speed of surface treatment—an important factor during aircraft repair. The compatibility of specific adhesives nd primers should be experimentally determined, however, as this study has observed differences in the effectiveness of primers in improving bond toughness and durability.
Summary Bowen's disease (BD; squamous cell carcinoma in situ) is a common, persistent condition that can be related to chronic sun damage, and consequently, is usually located around the head and neck area and lower limbs. Bowen's disease can be treated with a variety of methods, including surgery or laser therapy, but large lesions tend to scar postexcision and hence are difficult to treat surgically. Here we present the case of a 75-year-old woman with a 20-year history of facial BD unabated by treatment with a variety of topical agents and cryotherapy. Application of imiquimod 5% cream on alternate nights for 6 weeks resulted in total clearance with no recurrence observed after 8 months.