polymerguru

Today's KNOWLEDGE Share Why is Nylon 66 better than Nylon 6? Nylon was discovered by Wallace Hume Carothers. A chemist hired in 1928 by DuPont de Nemours to lead an extensive research program on the design of original polymeric materials. In 1935, he developed the formula known as PA 66: Nylon 66 and Nylon 6 are both types of nylon, a strong, durable, and versatile plastic material that has a wide range of applications. However, there are some key differences between the two that make Nylon 66 better suited for certain applications than Nylon 6. Strength:  Nylon 66 has a higher tensile strength and modulus of elasticity, which means that it is stronger and more durable than Nylon 6. This makes it a better choice for applications that require high strength and durability. Temperature Resistance :  Nylon 66 is able to withstand higher temperatures than Nylon 6, making it more suitable for applications that involve exposure to high temperatures, such as Frac Sand and other Indust...

State-run oil marketing companies bumped up the procurement price of ethanol made from C heavy molasses by Rs 6.87 per litre for the 2023-24 supply season, in a bid to to maximize #ethanol production and improve its availability for blending it with petrol. The latest price hike takes the price to Rs 56.28 per litre, higher than the previous season's Rs 49.41 per litre announced last year. The move come as Prime Minister Narendra Modi’s government aims to achieve 20% blending of ethanol in petrol by 2025 from the present levels of 10%. C molasses, a by product of sugar factory and its utilization for ethanol production, is an effective way to promote green economy, ministry of Petroleum and Natural gas said on December 29. India, which is the fifth-largest producer of ethanol in the world, is pushing for the blending of ethanol — which can be done domestically — in petrol, to become self-reliant in energy as the country imports nearly 85 percent of its oil...

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

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...

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 th...

  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!...

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 cel...

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...

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 pla...