Have you ever wondered how tape works? When a pressure-sensitive adhesive (PSA) tape is bonded to a surface, many factors are involved; understanding these dynamics will help ensure that tapes are bonded correctly and perform as expected.
This company has unveiled DOWSIL™ EA 3500G fast-cure adhesive, a new silicone capable of building primerless adhesion within 10 min at room temperature
Henkel’s Adhesive Technology business enters the 3D printing market.
June 1, 2018
Based on strategic partnerships with technology leaders such as Hewlett-Packard Co. (HP) and Carbon 3D, as well as investments into its R&D and application capabilities, Henkel intends to accelerate additive manufacturing processes beyond prototyping to final parts production with a growing portfolio of 3D printing solutions, including advanced materials, services, and equipment.
The probable reason for your problem is the ultraviolet (UV) transparency of the plastic and the fact that epoxy bonds are not very UV resistant. Even epoxy coatings are not recommended for outdoor applications because they discolor under UV.
Both of these types of adhesives have the advantage of not containing solvents and being single component, so no measuring or mixing is involved. In addition, they both use moisture to initiate the curing.
Packages are chosen based on performance and cost. Specialty materials like anaerobic adhesives need oxygen to maintain their stability and shelf life. These materials were traditionally packaged in low-density polyethylene tubes or bottles to allow air diffusion into the package.
This is a very interesting question. Many adhesives are used in what is called a “zero gap” situation, where the adhesive is applied between two closely fitting surfaces, which are then clamped together.