PRODUCTS MATERIALS IN DESIGN & PROTOTYPING MATERIAL SUITS AUTOMOTIVE INDUSTRY DEMANDS


In response to automotive industry demands for materials that can stand up to long term exposure to heat and gases in turbo-charged environments, DuPont Performance Polymers (DPP) has introduced two new materials. Zytel LCBM6301 is a long-chain blow moulding PA612-HI


polyamide grade with enhanced acid and thermal resistance versus flexible PA6, and better thermal resistance than PA12. This is targeted at flexible automotive air ducts, positive crankcase ventilation (PCV) tubes, and exhaust gas recirculation (EGR) sensor tubes. The new grade meets demands for materials that can operate in the more aggressive temperatures and gases generated by the latest compact turbo charged diesel and gasoline engines, while helping to meet CO2


and NOx emissions limits. Hytrel HTR8797 TPC-ET, meanwhile, is a flexible, blow-mouldable resin that more than doubles the


130˚C to 150˚C air oven ageing durability of previous Hytrel grades specified for cold side blow moulded auto air duct applications.


DuPont Performance Polymers www.dupont.com 3D COLOUR MODELLING, TOOLING AND MANUFACTURING


At the recent TCT Show, 3D Printing Engineering launched its new design, 3D colour modelling, tooling and rapid manufacturing services utilising the company’s 3D printing technology. The company provides a


customised end-to-end service – from initial CAD modelling and design engineering, through to manufacturing 3D printed direct tooling, prototypes and small pre-production batches of 3D printed finished parts.


In addition, 3D Printing Engineering showcased its latest developments in rapid build 3D printed direct tooling blocks for low and high temperature/pressure autoclave moulding (to 135 0C, 90 psi) of glass and carbon fibre reinforced composite parts, or for ambient temperature moulding or casting rubbers and engineering thermoplastics. The company has the ability to cost effectively custom produce


tooling solutions and high quality 3D printed components to the exact properties and finish required by its customers. Also available is the Z510


full colour inkjet printer for colour model making. This has the ability to print pattern tooling blocks and finished parts within a 250 x 250 x 200mm build envelope.


3D Printing Engineering www.3d-printing-engineering.com


SELECTING CONDUCTIVE COMPOUNDS


Chomerics Europe, a division of Parker Hannifin, has updated its selector guide for electrically conductive compounds. The guide now includes the


company’s CHO-SHIELD conductive coatings, CHO-BOND and TECKNIT sealants, gap fillers and adhesives, as well as CHO-LUBE, a conductive grease that is particularly suitable for metal-to-metal sliding contact areas requiring electrically conductive paths, such as switches. Using the guide, which can


be downloaded from http://bit.ly/1icKOgA, engineers and specifiers have at-a-glance access to the products’ typical properties, including specific gravity, min/max temperature use, shelf life, VOC and many more. Typical applications and useful comments are included to make the selection process easier. Ordering information is also included, covering pack size/weight, part numbers and whether there is a primer requirement. Primer ordering information is also included.


Chomerics Europe T: 01494 455400


POLYAMIDE RESIN ADDRESSES ELECTRICAL EQUIPMENT CHALLENGES


ABB has chosen Solvay Engineering Plastics’ Technyl One – a polyamide (PA) resin which addresses challenges in electrical equipment for energy management and building automation such as safety, miniaturisation and increased productivity – for a new contactor application. Features of the material include high-flowability


and high-temperature matrix, as well as excellent electrical properties and halogen-free fire


performance, the company explains. Targeted applications include Miniature Circuit Breakers (MCBs), Moulded Case Circuit Breaker (MCCB) and contactor parts requiring high amperage and thermal resistance performance. “We observed during the electrical overload test that the material exhibited a


high retention of surface properties,” said Jacques Dumoux, ABB plastic material manager (Low Tension). “For short durations, during this critical test, the connections of the new contactors are exposed to significant overloads – up to ten times the normal amperage which generates very high temperatures, to which the surrounding plastic parts must resist. Technyl One withstood creep and softening behaviour throughout this stringent analysis. Previously, only materials such as crosslinked polyamide, polyphtalamide or thermosets passed these tests.” Technyl One J 60X1 V30 grade is a halogen-free flame-retardant material that


provides a UL94 V0 rating at only 0.4mm of wall thickness as well as unmatched thermal ageing properties (150˚C electrical RTI – Relative Thermal Index) and a high comparative tracking index (CTI 0 for 600 volts and higher).


Solvay Engineering Plastics 32 NOVEMBER 2015 | DESIGN SOLUTIONS www.technyl.com Laser Components www.lasercomponents.co.uk / DESIGNSOLUTIONS COATING LASER OPTICS


According to Laser Components, coated laser optics are used to optimise the characteristics of the laser beam. Losses, however, occur at each surface due to reflection. To keep these to a minimum the number of optics in a system should be kept as low as possible. To help, the company offers laser optics with complex


coatings on both sides – something which has, in the past, been almost impossible to achieve as the temperatures required to apply the second complex coating would heat the first coating and cause cracking. This effect is only worsened by the complexity of the second coating: the more complex the coating, the more layers are required. This directly translates to length of exposure to extreme temperatures. So, the company’s complex coating designs are


manufactured to customer specifications, with a large number of combinations available. Laser optics with complex coatings on both sides are commonly used in resonators and polarisers. For resonator applications, the dichroic coating is usually on the front, and the rear coating can then be highly or partially reflective for either the same or another wavelength. It is also possible to


combine a polarisation coating on one surface and a mirror coating on the other.


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