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Scott Bader Adds New Black M7 Grades to its Crestabond® Primer-Less Structural Adhesives Range

Published on 2015-06-05. Author :

Wollaston, Northamptonshire, UK -- Scott Bader adds two new Crestabond® grades of methacrylate primer-less structural adhesives to the M7 (1:1) range.

Crestabond M7-05 Black and M7-15 Black have been specifically developed by Scott Bader in response to customer demand, particularly from fabricators bonding pigmented ABS and carbon fiber (CF) composite components. These two new 1:1 mix ratio grades are in addition to existing black grades, which up until now have only been available in the Crestabond M1 (10:1) range. With the significant growth in applications now specifying CF to achieve a lighter weight, the need for a black pigmented adhesive system has significantly increased for the latest designs of finished composite parts now being structurally bonded in applications for motorsports, high performance and luxury cars, electric vehicles, racing yachts, and sports equipment, where aesthetics and finish quality are very important.

The two new black colored M7 grades added to the 1:1 ratio Crestabond range now offer manufacturers a color choice of either off-white or black, which can be a significant application benefit to meet any aesthetic requirements in addition to bond performance. Both new black colored grades are variants of the existing Crestabond M7 off-white grades in the range. They exhibit the same attributes, handling and performance properties including: excellent fatigue and impact resistance; good gap filling capabilities up to 5mm; with minimal surface preparation required prior to bonding. Crestabond M7-05 Black has a working time of 4-7 minutes and a fixture time of 18-22 minutes; where a longer open time is beneficial, the Crestabond M7-15 Black grade offers a working time of 10-20 minutes and a fixture time of 30-45 minutes. According to published Scott Bader technical data sheets available, both new grades have a viscosity of 30,000-70,000 centipoise (cP), and offer a tensile modulus of 1200-1700 MPa, with a tensile strength between 22-25 MPa, and an elongation of 33-35% depending on the specific grade. As with the rest of the M7 range, both M7-05 Black and M7-15 Black are suitable for bonding a wide range of popular engineering material substrates such as: FRP, Stainless Steel, Aluminum, Cold rolled and galvanized metals, ABS, Acrylic and Polycarbonate.

Depending on part sizes, complexity, quantities and the adhesive application equipment being used for bonding parts on the shop floor, the Crestabond M7 range is available in a variety of pack sizes: 50ml and 400ml side by side cartridges; 20 Liter (nominal) pails and 200 Liter (nominal) drums.

Now globally established as proven, cost effective structural adhesives for OEMs and convertors, key markets and bonding applications for the Crestabond range include: building & construction for doors, windows and cladding; wind energy blades, housings and nacelles; marine for all types of craft; land transportation for buses, coaches, trains and trucks; recreational vehicles, motor homes and caravans; and for agricultural vehicles, such as tractors, diggers and combine harvesters.

About Scott Bader
Scott Bader was established in 1921. Today it is a $287 million global chemical company, employing over 640 people worldwide. It is a common trusteeship company, having no external shareholders, with a strong commitment to supporting its customers, workforce and the environment.

Scott Bader’s headquarters is based in the UK where it has purpose-built, state-of-the-art technical facilities that provide R & D as well as complete evaluation, testing and application support. It has manufacturing facilities in Europe, The Middle East, India, South Africa, Canada and South America.

Source: Scott Bader

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