Today's KNOWLEDGE Share : Hill Helicopters

Today's KNOWLEDGE Share

Hill Helicopters is on a mission to build the world's first truly private helicopter, engineered for flight, designed for owners! 

For that, they took the bold decision to make the main composite structure of the HX50 in a single piece: A monolithic carbon fiber crash cell, beautifully styled and aerodynamically sculpted, that gives them the balance of performance, strength and cost effectiveness! 

The company has been able to demonstrate that their approach to making a monolarge in a single piece not only works, but is remarkably cost-effective. 

Source:Hill Helicopters/Marcelo Magiero Webster

Follow: http://polymerguru.blogspot.com

Laboratory extruder relaunched: ZE 28 BluePower

At this year’s Fakuma in Friedrichshafen, Laatzen-based KraussMaffei Extrusion GmbH will exhibit the newly designed ZE 28 BluePower laboratory extruder. In addition to fast availability and a highly attractive price, this extruder is characterized by improved ease of operation and enhanced performance.

The new high-performance laboratory-scale extruder convinces by a perfect combination of free volume (OD/ID =1.65) and high torque density of 13.6 Nm/cm³. Depending on the specific process requirements, the processing section can be configured within a length range of 32 to 64 D and equipped with up to three side feeders.

Just like the other extruders in this series, the ZE 28 BluePower is available in three material variants, in order to offer the wear resistance and corrosion protection required for customer-specific applications.

Solution for any application with optimized ease of operation

The laboratory extruder is designed to implement bespoke process solutions thanks to a wide variety of configuration options. These include processing section elements in high-temperature design with a thermal resistance of up to 420°C. In addition, the automatic screw removal towards the drive – or "UltraGlide” feature for short – further expands the range of applications for this machine.

Since October 2022, the standard version of the ZE BluePower extruder has been equipped with the newly developed “pioneer processControl” (ppC) featuring wizards (assistants) for enhanced production reliability. These wizards provide the operator with step-by-step instructions for certain procedures such as starting the production line or shutting it down. As a matter of course, common up- and downstream systems can be integrated into the new control system.

Focus on higher efficiency, shorter delivery times and increased cost effectiveness:

“After intensive discussions with our customers, we have responded to current market requirements and improved our twin-screw extruder accordingly.

In the future, we will offer our extruder with a cost advantage as compared to our competitors and an attractive delivery time.”

High energy efficiency, excellent temperature control within the processing section, improved surface cleaning, enhanced power electronics protection and an optimized strand extrusion die are the key features of the relaunched ZE 28 BluePower design. The processing sections including the screw configurations are still customized and all process-engineering results can be scaled up without any problems to the entire BluePower extruder range from size ZE 42 up to the ZE 186.

Source:www.plasticsnews.com/KraussMaffei

Follow: http://polymerguru.blogspot.com

Today's KNOWLEDGE Share:High-load composite bearings

Today's KNOWLEDGE Share

Trelleborg launches Orkot® C620 high-load composite bearings

Trelleborg Sealing Solutions pushes the boundaries of composite technology with the launch of Orkot® C620, an innovative ultra-low friction bearing material with five times the compressive strength of other Orkot materials for offshore and marine applications.

A high-specification thermoset composite, Orkot® C620 meets the requirements of the most demanding high-load applications. Though strong and light, it withstands high loads and stresses over a long service life.

“Orkot® C620’s optimized properties provide customers with a step change in composite bearings, offering a unique combination of ultra-low friction and a compressive strength of 470 MPa, five times the strength of standard Orkot® materials. It is both stronger and has better friction characteristics than competitor composite materials, and can even challenge many metallic bearings for strength, offering industries such as aerospace the lighter, lower-friction solutions they increasingly demand.”

“Featuring a strong #glassfiber backing with a low-friction Orkot® lining, it builds upon regular Orkot® composite formulations with a unique compound where the properties of the different layers increase load capacity and strength. It does this without compromising weight while reducing friction and eliminating maintenance to maximize efficiency and service life.”

Because of its unique characteristics, Orkot® C620 is an attractive solution across a wide variety of sectors with demanding high-load applications including offshore and marine applications.

For offshore wind turbines, it reduces maintenance requirements for deep-sea mooring connections and provides electrical isolation, enhancing corrosion resistance while resisting high loads from rough ocean currents. In wind turbine pitch cylinders it provides a very low coefficient of friction, allowing smooth operation at high loads and low speeds.

For floating production, storage and offloading (FPSO) mooring infrastructure, Orkot® C620’s advantages include low wear rates in fairhead and tensioner applications, and low friction and minimal stick-slip, making it ideal for slow movements in FPSO turrets and swivel stacks. In mid-water arches, it is strong enough to withstand high loads on supporting risers, cables and umbilicals.

Orkot® C620 also delivers outstanding performance in aerospace applications. It is ideal for landing gear applications, providing the required strength of a comparable metal bearing with significant weight reduction, increasing fuel efficiency and allowing for more passenger and luggage capacity. This is critical in industries like aerospace where every kilo counts as manufacturers focus on ‘lightweighting’ to reduce fuel requirements and improve the sustainability of flying.

Source:www.trelleborg.com/www.jeccomposites.com

Follow: http://polymerguru.blogspot.com

Today's KNOWLEDGE Share :The Mystery of Holes in Cheese Knives

 Today's KNOWLEDGE Share

The Mystery of Holes in Cheese Knives 

Ever wondered why some cheese knives come with those intriguing holes in the blade? 

Let's demystify the magic behind this unique design!

1. Friction-Free Slicing:

  - Those holes aren't just for show – they reduce friction, making it a breeze to slice through soft cheeses without the usual sticky struggles.

2. Precision Cuts:

  - The strategic hole placement isn't random; it's a masterstroke for achieving precise, even slices. Say goodbye to uneven chunks and hello to cheese perfection!

3. Enhanced Control:

  - Ever felt like your knife has a mind of its own? The holes contribute to better control, guiding your knife with ease and finesse through every cheese variety.

In the world of cheese, it's not just about the slice; it's about the experience. So, the next time you reach for that cheese knife, remember, those holes are there to elevate your cheese game to new heights! 

𝑫𝒊𝒔𝒄𝒍𝒂𝒊𝒎𝒆𝒓: 𝘐 𝘩𝘢𝘷𝘦 𝘵𝘳𝘪𝘦𝘥 𝘵𝘰 𝘦𝘯𝘴𝘶𝘳𝘦 𝘢𝘤𝘤𝘶𝘳𝘢𝘤𝘺 𝘣𝘶𝘵 𝘮𝘪𝘴𝘵𝘢𝘬𝘦𝘴 𝘮𝘢𝘺 𝘰𝘤𝘤𝘶𝘳. 𝘐 𝘸𝘪𝘭𝘭 𝘣𝘦 𝘩𝘢𝘱𝘱𝘺 𝘵𝘰 𝘤𝘰𝘳𝘳𝘦𝘤𝘵 𝘢𝘯𝘺 𝘦𝘳𝘳𝘰𝘳𝘴 𝘰𝘳 𝘰𝘮𝘪𝘴𝘴𝘪𝘰𝘯𝘴 𝘶𝘱𝘰𝘯 𝘯𝘰𝘵𝘪𝘧𝘪𝘤𝘢𝘵𝘪𝘰𝘯.

Source:Dr.Navneet Kumar

Follow: http://polymerguru.blogspot.com

Today's KNOWLEDGE Share:rPET foaming technology

Today's KNOWLEDGE Share

ArmaPET® Struct GRX: next generation in rPET foaming technology
Armacell, a global leader in flexible foam for the equipment insulation market and a leading provider of engineered foams, announces the launch of its latest innovation, the new ArmaPET Struct GRX solution. This cutting-edge development in recycled PET foam core technology delivers significant improvements in sandwich structure production with greater efficiency, cost savings, and sustainability.

Transparency and commitment:
Entirely made from recycled plastic bottles, ArmaPET Struct GRX reinforces Armacell’s commitment to sustainability and offers an optimised resin uptake process that drastically improves the weight and cost of sandwich structures. Its remarkable thermal and dimensional stability safeguards high-quality production, while its outstanding fatigue resistance ensures long-term performance and low lifetime maintenance.
New ArmaPET Struct GRX boasts a more homogenous and finer cell structure compared to previous generations resulting in enhanced shear properties. “We strive for continuous improvement of our product solutions – based on our customers’ needs. ArmaPET Struct GRX provides significant savings in resin uptake to further optimise weight and cost savings.” says Bart Janssen, Armacell’s Vice President Engineered Foams & Energy.

Striving for excellence:
Extensive testing conducted by Armacell proves that ArmaPET Struct GRX exhibits comparable or even superior mechanical performance to its predecessors – for example, its adjusted foam recipe delivers an increase of up to 30 percent in shear properties. This latest product innovation heralds a new era for rPET foaming technology, offering customers unparalleled efficiency gains, cost optimisation, and a sustainable solution.

Source:https://lnkd.in/gyY_h_VS

Today's KNOWLEDGE Share: Thin Parts molding

Today's KNOWLEDGE Share

I recently heard of a customer observing huge differences in pressure to fill from two PP batches with checked identical viscosity data from capillary tests.

When molding thin parts, the pressure drop becomes overwhelmingly dominated by the actual "frozen skin" thickness that develops rapidly during filling.

With a thickness in the 100's of microns range the effective available thickness for flow will dramatically decrease in the case of thin parts.

The pressure drop in a plate scales essentially with one over the cube of the thickness, so a tiny difference in the frozen layer makes a huge difference in pressure to fill !

In PP we see a very strong effect of nucleation, both induced by additives/pigments or due to flow ( Flow Induced nucleation). The tremendous amount of shear in the outer layers of the flow in Injection Molding will lead to a frozen layer thickness that varies a lot with molecular architecture (Mw in particular).

This could be a major issue in recycled PP where "same viscosity" batches may actually have variable amounts of long chain fraction, key for nucleation and therefore crystallization kinetics.

Source:Vito leo

Follow: http://polymerguru.blogspot.com

Today's KNOWLEDGE Share: Do you know why aircraft don't fly over Tibet?

Today's KNOWLEDGE Share

Do you know why aircraft don't fly over Tibet?

If you look at the Flight radar application, you will see that while there are many planes flying all over the world , there are no planes in the Tibet region of China.

So why don't planes fly over Tibet

Why do they go around it when they can go straight through for a shorter route

In fact, the answer to this question is hidden in the "roof of the world" analogy used for Tibet. Tibet is a geography with an average altitude of 5 thousand meters above sea level and home to Mount Everest, the highest place in the world.

So what does this have to do with airplanes?

The cabins of modern passenger aircraft are pressurized. When a malfunction occurs in this pressure system, oxygen masks are first activated to allow passengers to breathe. However, the capacity of the oxygen system is sufficient for 15-20 minutes.

Therefore, when a failure occurs in the cabin pressure system, pilots have to pull the plane to an altitude of 3 thousand meters. In most parts of the Tibetan region, the altitude is well above 3 thousand meters. There is no environment in Tibet where planes can descend safely in case of an emergency.

Additionally, when one of the engines in twin-engine aircraft fails, the aircraft must descend to a certain altitude in order to fly safely. Unfortunately, this is not possible due to the geographical structure of Tibet. For these reasons, no planes fly over Tibet.

Source:Charlie Gilichibi

Follow: http://polymerguru.blogspot.com