QUESTION: I see many so-called “five-minute” epoxy adhesives (and sometimes ones with even shorter cure times). Are these adhesives truly strong and durable?
Over the last 50 years, the aerospace and aircraft industries have used silicone in an ever-growing number of applications. Silicone inherently has high dielectric strength (typically ≥ 500 V/mil) and a large coefficient of thermal expansion (CTE), allowing it to absorb stresses during thermal cycling.
Although five major bonding mechanisms are associated with adhesion promotion, two primary factors predominately influence the adhesion of any type of polymer to another substrate: chemical surface-to-surface interaction at the molecular level, and the wettability of the adhesive so as to enable surface spreading. Adhesion values can also be influenced by the matrix, or vehicle, that enables surface wet-out.
Adhesive bonding can be used to assemble identical materials or materials of different types; the purpose of such an assembly is to transfer mechanical loads in a given environment.
Industries ranging from automotive and consumer electronics to building and construction are designing and manufacturing products that call for increasingly sophisticated bonding solutions.
Foreign suppliers are feeling the pressure from improved domestic technology in China’s neutral silicone sealant market.
September 5, 2013
Suppliers, customers and channel players in China’s silicone sealant industry agree that the best products come from foreign brands. They also agree that customers are demanding higher and higher quality sealant products.
The ASI Top 25 is our exclusive ranking of the top 25 manufacturers of adhesives and sealants.
August 5, 2013
This issue of Adhesives & Sealants Industry magazine brings the ASI Top 25, our exclusive ranking of the top 25 manufacturers of adhesives and sealants.
Negative health effects caused by formaldehyde can be avoided through safe ventilation practices and detection instruments.
July 1, 2013
Formaldehyde is a chemical widely used to manufacture building materials and various household products. Formaldehyde resin is an adhesive commonly used in woodworking, especially in veneer and lamination work. It is known for open working time, rigidity and moisture resistance.