Resins: Alkali stress crack resistance for automotive
The Polyplastics Group recently introduced a new polybutylene terephthalate (PBT) resin that delivers excellent alkali stress crack resistance for a range of automotive applications. DURANEX 532AR also exhibits outstanding hydrolysis, heat shock resistance, and electrical performance for components in the chassis and engine compartment. This material has successfully reduced the risk of cracking in molded articles by preventing alkali (often formed by rust on metal parts) from penetrating the inside of the resin, thus imparting toughness that helps generate less stress. Ideal for use in parts (like electrical components and sensors) installed in the chassis section and lower areas of vehicles.
Solvay develops sustainable Halar ECTFE anti-corrosion coating system
Solvay's new waterborne Halar ECTFE coating system broadens metal corrosion-prevention applications for the chemical processing industry. The coating system is comprised of a high-adhesion primer and topcoat and is easily applied using standard liquid spray equipment. Solvay's Halar ECTFE powder coatings have been used for corrosion prevention for over 40 years for equipment in a range of industries including acids, mining, pulp and paper, pharmaceutical, food and beverage, and semiconductor, among others. The new waterborne Halar ECTFE liquid coating tech expands the range of end-use applications to those that are difficult or impossible to powder coat. This includes complex shapes, uneven surfaces, oversized vessels, pipe interiors, and tanks and containers. Moreover, it provides engineers an alternative protective metal coating option to corrosion-resistant alloys (CRAs).
Xometry receives ISO 9001:2015 and AS9100D certifications
Xometry, the world's largest digital manufacturing marketplace, recently announced that it has received ISO 9001:2015 and AS9100D certifications. These certifications are among the industry's most rigorous and reflect the company's commitment to quality. ISO 9001 is the world's most widely recognized quality management standard and helps organizations to meet the expectations and needs of their customers. The AS9100 standard goes beyond the requirements of ISO 9001 to meet the rigorous demands of the aerospace and defense industries.
Victrex and Bond pioneer 3D printing for PAEK and PEEK parts
To help customers with an accelerated route to market for 3D-printed PAEK and PEEK parts, UK-based Victrex has secured a multi-million-euro investment in Dutch 3D-printing company Bond High Performance 3D Technology. What's significant is that Bond's technology is capable of printing complex, functional parts made of PAEK/PEEK with excellent mechanical properties, including in the z-direction. This enables the additive manufacturing of high-strength, isotropic parts with properties comparable to conventional molded or machined PEEK parts.
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Helpful tips for molding PEEK polymer
Are you a first-time molder of PEEK? Or maybe you've tried molding it and have run into problems? This article from Victrex presents five important considerations in the injection molding process that can help you avoid the need for troubleshooting when molding PEEK polymer. Following this advice can also help you optimize the full potential of this high-performance material.
Read the Victrex tips article.
Top Product: Allite Super Magnesium
Weighing 33 percent less than aluminum, while also being stiffer and stronger pound for pound, the new Allite Super Magnesium alloy has shown its mettle in classified defense and aerospace applications. Now it's available for wider use. This material is less expensive than carbon fiber and has the lowest carbon footprint of any structural material throughout the value chain. Industry applications include home improvement, sporting goods, aerospace, automotive, biking, and beyond. Three alloy variants available to suit welding, forming/forging, or casting. These alloys feature excellent shock-absorption properties, good electromagnetic shielding performance, good heat dissipation, and recyclability. Allite is based in Dayton, OH.
Replace metals with hard materials
The use of sapphire, ceramics, and other hard materials has significant advantages over metal, depending on the application. The materials machined at Insaco are harder and stronger in compression than most metals. They can be electrically or thermally insulating or conducting, and in the case of sapphire, can be polished optically clear to a surface finish less than 1 micro inch. This allows for selecting a material based on the most important material property required and allows for versatility in selecting the material that makes the most sense. When a low-cost part must be frequently replaced because of a harsh environment, looking to hard materials may be the key to lowering overall cost. Learn more about metal replacement materials in this informative Insaco article.
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Desktop Metal launches 316L stainless steel for 3D printing
Desktop Metal, a 3D-printer maker, has just announced the launch of 316L stainless steel for the company's Studio System, the world's first and only office-friendly metal 3D-printing system. This machine is great for prototyping and low-volume production. A fully austenitic steel known for its corrosion resistance and excellent mechanical properties at extreme temperatures, 316L is well suited for applications in the most demanding industrial environments, including salt water in marine applications, caustic cleaners found in food processing environments, and chemicals in pharmaceutical manufacturing.
Selecting the best option for coloring plastics products
Designers of plastic products know the importance of choosing a dynamic color in order for a product to stand out from the competition. Not surprisingly, many are not as familiar with the fundamentals of color matching in plastic and the challenges certain resins can pose. Unfortunately, often this isn't discovered until deep into the product development cycle and after considerable time and money are invested in the project.
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Photo etching thin titanium components
Tech-Etch specializes in the photo chemical etching of titanium. Because of its low weight, strength, and corrosion resistance, titanium is used in everything from jet engines to eyeglass frames. And because titanium is inert and completely biocompatible, it is also used in many medical implantation applications, as well as anode and cathode battery current collectors and telemetry antennas found in implanted medical devices.
Get the Tech-Etch Precision Engineered Parts capabilities brochure (no registration required).
Cool Tools: World's darkest spray paint
A whole range of products can now take advantage of the world's blackest coating, Vantablack, thanks to the development of a new spray version called Vantablack S-VIS. It is easily applied at large scale to virtually any surface. Vantablack's carbon nanotube matrix structure absorbs virtually all (99.8 percent) incident light, enabling precision optical systems to be optimized. The material's developer, UK-based Surrey NanoSystems, has mimicked the performance of its original Vantablack with this new version that can be sprayed onto objects, rather than deposited using a chemical vapor deposition (CVD) process.
Click here to learn more.
Expanded TPE portfolio for soft-touch surfaces
The new FG/SF THERMOLAST K series compounds from KRAIBURG TPE provide design flexibility, cost-effective processability, and flawless surface quality. They comply with all established automotive standards set by OEMs with regard to emission and odor, and they also provide permanent UV stability. The flexible materials are available in hardness grades ranging between 50 and 80 Shore A. They offer excellent adhesion to polypropylene in two-component applications and provide attractive, satin-finished surfaces with a pleasant soft-touch feel and permanent abrasion resistance.
Know your materials: Nylon 12CF
FDM Nylon 12CF is a chopped carbon fiber-filled polyamide 12 material that is available for 3D printing on compatible Stratasys Fortus production systems. The material is 35 percent carbon fiber by weight and has a high strength-to-weight ratio with a tensile strength on par with high-performance FDM material. The 3D design and rapid prototyping specialists at TriMech run through what you need to know about this exciting and versatile material.
Read the TriMech blog.
Cool Tools: Desktop full-color 3D printer
The all-new XRIZE desktop industrial 3D printer enables users to manufacture functional polymer and composite parts in full color. And since RIZE's intelligent and innovative solutions focus on the user as much as the machine, XRIZE is easy to use, safe, and enables markup to provide much-desired IP security, traceability, and branding. This machine requires minimal pre-processing, post-processing, and material management. It uses a patented Augmented Deposition process by extruding an engineering-grade thermoplastic and simultaneously jetting C-M-Y-K inks through industrial printheads to achieve the full-color part. Build volume is 12 x 8 x 8 in. (310 x 200 x 200 mm). New carbon fiber materials also available.
New food-grade high-performance PEEK polymers
To help OEMs meet the stringent regulatory and quality demands affecting the food equipment industry, Victrex is introducing a dedicated PEEK food-grade portfolio. Compared to metal components, the new VICTREX FG family of high-performing thermoplastics offers additional benefits in terms of cost effectiveness, productivity, and performance for OEMs -- and the neutral taste expected by consumers. In addition, with the adoption of Industry 4.0 technology, VICTREX PEEK can offer food and beverage manufacturers the opportunity to optimize efficiency and reduce production costs, when compared to the use of metals.
New blue compound could become significant factor in cooling buildings and even cars
A new type of durable, environmentally benign blue pigment discovered at Oregon State University has also been found to have unusual characteristics in reflecting heat - it's a "cool blue" compound that could become important in new approaches to saving energy in buildings.
The compound, which has now received patent approval, was discovered about three years ago almost by chance, as OSU scientists were studying some materials for their electrical properties.
Its potential use to help reduce heat absorption on the roofs and walls of buildings - which is an evolving field of considerable interest in warm regions where cooling is a major expense - adds another role for the material, which is now being considered for various commercial applications.
The unusual "trigonal bipyramidal" crystalline structure seen here is being used by researchers at Oregon State University to create a range of new pigments with properties of safety and stability that should have important applications in the paint and pigment industries. [Graphic courtesy of Oregon State University]
"This pigment has infrared heat reflectivity of about 40 percent, which is significantly higher than most blue pigments now being used," said Mas Subramanian, an OSU professor of chemistry who discovered the compound.
"The more we discover about the pigment, the more interesting it gets," Subramanian said. "We already knew it had advantages of being more durable, safe and fairly easy to produce. Now it also appears to be a new candidate for energy efficiency."
"Cool roofing," in which paints are used to reflect significant portions of the sun's heat and thereby reduce cooling costs, is an important new trend in "green" construction and energy efficiency, experts say. Such reflective coatings also are more aesthetically pleasing, have less thermal degradation, reduce the "heat island" effect in cities, lower peak energy demand, and reduce air pollution due to lower energy use and power plant emissions.
"We're seeking licensing partners for this invention right now," said Mary Phillips, associate director of the Office for Commercialization and Corporate Development at OSU. "We believe it can contribute to new energy efficiency solutions around the world."
In general, any darker color of the type often used for roofs, houses, automobiles or other applications will tend to absorb more heat. But some compounds, like the one discovered at OSU, have dark tones but also the ability to reflect heat in the infrared spectrum, which is responsible for most of the heat energy absorbed from sunlight.
The material created at OSU, researchers say, is probably the best blue pigment humans have produced since ancient times - going back to efforts by the Egyptians, the Han dynasty in China and Mayan cultures. Blue pigments have been sought through history but often had serious drawbacks, such as decaying quickly, being toxic, costly or carcinogenic.
In research funded by the National Science Foundation, OSU scientists discovered this material by coincidence while they were looking for something else.
Some manganese compounds came out of a 2,000 degree Fahrenheit oven transformed into a beautiful blue, which researchers later determined was due to an unusual "trigonal bipyramidal coordination" of their molecules that changed when exposed to extreme heat.
Research will continue at OSU on the heat reflectance capabilities of the new compound and the underlying molecular structure responsible for it, scientists said.
Source: OSU College of Science
Published July 2012
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