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Mapei's Production Plant in Robbiano di Mediglia, Milan. In 1978, Giorgio Squinzi, a graduate in industrial chemistry, began internationalising the company, both commercially and in terms of production, by opening a small factory in Canada after supplying adhesives for installing the rubber surfaces used for the athletics tracks at the 1976 Olympics.
The wear of an adhesive tape as it slides across a substrate can be estimated using Archard's Law of Adhesive Wear, where and are the hardness and wear coefficients of the adhesive tape, is the distance the adhesive is dragged across the substrate surface, is the total normal load acting on the adhesive tape, and is the volume of the adhesive ...
Tackifiers are chemical compounds used in formulating adhesives to increase tack, the stickiness of the surface of the adhesive. [1] They are usually low-molecular weight compounds with high glass transition temperature. At low strain rate, they provide higher stress compliance [clarification needed], and become stiffer at higher strain rates.
Polyetherimide (PEI; branded as Ultem [1]) is an amorphous, amber-to-transparent thermoplastic with characteristics similar to the related plastic PEEK.When comparing PEI to PEEK, the former is cheaper but has lower impact strength and a tighter temperature range.
The first use of compound adhesives was discovered in Sibudu, South Africa. Here, 70,000-year-old stone segments that were once inserted in axe hafts were discovered covered with an adhesive composed of plant gum and red ochre (natural iron oxide) as adding ochre to plant gum produces a stronger product and protects the gum from disintegrating ...
In 1953, American professor Vernon K. Krieble developed anaerobic threadlocking adhesives in his basement laboratory at Trinity College in Hartford, Connecticut.Krieble's company, American Sealants, founded the Loctite brand, which was promoted as ushering in a new era of mechanical reliability by eliminating the vibrational loosening of mechanical fasteners, a frequent cause of machine ...
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