Pumping Plastics By Herwig - November 2024
Herwig Juster
Your Scout for High Performance Polymers & Material Selection I KAM @ Syensqo I Blogger @ FindOutAboutPlastics.com I Author of "Polymer Material Selection - A Practical Guide"
Hi and Welcome!
Also, I would like to give a warm welcome to all new subscribers.
This?monthly digest contains the latest?posts from?my Find Out About Plastics Blog.
What happened in November?
Let us find out!
Enjoy the read!
Design Properties for Engineers: Dynamic Mechanical Analysis (DMA) of Ultra Performance Polymers (PBI and PBI blends)
In this post we?discuss the storage modulus E’ measured by DMA of the ultra performance polymer Polybenzimidazole (PBI). Check out my other post on DMA of high performance polymers here. DMA is an essential tool for polymer material selection, allowing you to immediately capture the mechanical behaviour over a wide temperature range.
What is Polybenzimidazole (PBI)?
PBI is the ultra high performance plastic which was developed in cooperation with NASA to have a lightweight, high heat, low friction, high chemical and radiation resistant polymer which can be used in space and aircraft applications. Nowadays the application field of PBI is much broader and it is used in electric & electronic appliances too. Its unique structure, consisting of a repeating benzimidazole unit, imparts these remarkable characteristics. PBI has a glass transition point of 427°C and its high purity makes it ideal for cable insulation powder coatings, friction parts and housings.
Storage Modulus E’ of PBI and PBI-blends
The Figure above shows the storage modulus vs. temperature behaviour of PBI, PBI-PEEK blend, PAI, and PEI. They all show a significant drop in modulus in the glass transition region, expect of PBI. Before reaching the Tg, the neat PBI polymer still has a storage modulus of 3 GPa, where else the other presented polymers have already reached the zero level at this temperature.
High Performance Thermoplastic Selection - Imide-Based Polymers (PEI, PAI, PESI, TPI, PI) and Polybenzimidazoles (PBI, PBI+PEEK, PBI+PEKK) [Part 2B]
Welcome to the Part 2B of our High Performance Thermoplastics selection blog series. Today we discuss imide-based polymers and Polybenzimidazoles, their chemistry and production processes, their main properties, processing methods, and applications.
Check out Part 2A too:
Imide-Based Polymers (PEI, PAI, PESI, TPI, PI)
Polyetherimide (PEI) In the 1980s, Joseph G. Wirth developed PEI at General Electric’s Plastics Division and it found its way into the market as Ultem. When Saudi Basic Industries Corporation (SABIC) bought the GE Plastics business in 2007, it took over the PEI patents and continued its marketing and development.
Polyamide-Imide (PAI): An amorphous high-performance polymer which can be still melt processed Polyamide-Imide (PAI) is an extremely strong, rigid and wear-resistant high performance polymer with use temperature form -200°C till up to 260°C. Additionally, PAI can keep its mechanical properties over the whole use temperature range and is not melting when reaching the glass transition temperatures. Reason is a post curing process after processing turning the material into a thermoset-like structure. In 1973, chemical company Amoco introduced PAI as Torlon? to the market. Nowadays, the newly formed chemical company Syensqo, which routes back to Ernest Solvay and the Solvay company, produces and market this high performance polymer.
Polyimides (PI): A Versatile Polymer Polyimides (PIs) are a class of high-performance polymers renowned for their exceptional thermal and chemical resistance, mechanical strength, and electrical insulation properties. PIs show a wide range of use temperatures, from cryogenic up to 400°C and the mechanical properties remain the same in this range. PIs combine low thermal expansion, high wear resistance, and low creeping with high purity and low off-gassing. Their unique combination of properties makes them indispensable in a wide range of applications, from aerospace and electronics to automotive and medical industries.
New Online Tool - Calculate your Plastics CO2 equivalent (CO2e) Savings Potential
I created an online calculator which allows you to quickly calculate the CO2 equivalent (CO2e) savings potential for your application.
Example metal replacement (magnesium) vs Polyamide
The Figure above shows the user interface of the calculator and the input values for the metal replacement example. As a result, changing from Magnesium to Polyamide 6.6 has a CO2e saving potential of 47%.
The calculator contains 100% mechanically recycled polymers too, including glass-fiber reinforced materials. Also, continuously new polymers will be added.?
Polymer Material Selection Example I Smartphone Front Bezel I POMS-Funnel Method:
Power Tool Housing Materials: PA 6 vs PP with chemically coupled GF I Polymer Material Selection:
Polymermaterialselection.com is online!
My dedicated website for polymer material selection is online. It contains new online tools for supporting you in your selection journey too.
Additionally, I offer to select the optimal polymer for your project, doing the polymer material selection together with you, and also teaching polymer material selection as a training in a group - reach out here for more
There is a big polymer engineering problem keeping you up at night?
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I am glad to support you!
If you want me to blog about a specific topic, I invite you to reach out to me here at LinkedIn.
Thank you for your attention!
Greetings,
Herwig Juster
#FindOutAboutPlasticsBlog #PumpingPlastics #PolymerMaterialSelection