polymerguru

𝐓𝐨𝐝𝐚𝐲'𝐬 𝐊𝐍𝐎𝐖𝐋𝐄𝐃𝐆𝐄 𝐒𝐡𝐚𝐫𝐞 𝐔𝐕 𝐃𝐞𝐠𝐫𝐚𝐝𝐚𝐭𝐢𝐨𝐧 𝐄𝐟𝐟𝐞𝐜𝐭𝐬 𝐢𝐧 𝐏𝐨𝐥𝐲𝐦𝐞𝐫𝐬 𝐄𝐟𝐟𝐞𝐜𝐭𝐬 𝐨𝐟 𝐔𝐕 𝐝𝐞𝐠𝐫𝐚𝐝𝐚𝐭𝐢𝐨𝐧 𝐨𝐧 𝐩𝐨𝐥𝐲𝐦𝐞𝐫𝐬 𝐦𝐚𝐲 𝐛𝐞 𝐚𝐬𝐬𝐞𝐬𝐬𝐞𝐝 𝐟𝐫𝐨𝐦 𝐭𝐡𝐞 𝐟𝐚𝐜𝐭𝐨𝐫𝐬 𝐝𝐢𝐬𝐜𝐮𝐬𝐬𝐞𝐝 𝐛𝐞𝐥𝐨𝐰. Change in chemical structure - Natural weathering is normally an oxidative degradation which produces hydroperoxy, hydroxy, carbonyl groups and cross-linking, which can be detected by IR, UV and NMR spectroscopy. Change on surface - Most of the oxidative degradation takes place at the surface of polymeric material because oxidative processes are more intense at surface due to greater availability of oxygen and high temperature. Thus, a brittle outer layer is formed on polymer surface due to weathering and with the help of SEM or optical microscopy it can be observed. Embrittlement - Many oxidative degradation processes cause embrittlement in polymers, which can be easily examined manually. Generation of free radicals...

SIBUR has developed a new bimodal high-density polyethylene grade, HD21550 CC, for the production of 38 mm caps used to seal juices, dairy products, tea, and other beverages. The new grade was developed in response to the requirements of closure manufacturers, for which processing stability on high-performance lines, retention of product geometry, sealing performance, and compliance with the hygienic and organoleptic standards of the beverage industry are critical. #HD21550 CC can be used for cap production via both #injectionmoulding and #compressionmoulding . The grade offers excellent processability and ensures high-quality mould filling during cap production. The advantage of #bimodalpolyethylene lies in its ability to combine good rheological properties during processing with a high level of mechanical performance in the finished product. As a result, HD21550 CC enables the production of caps that retain their shape during transportation and use, ensuring reliable sealing and p...

𝗧𝗼𝗱𝗮𝘆'𝘀 𝗞𝗡𝗢𝗪𝗟𝗘𝗗𝗚𝗘 𝗦𝗵𝗮𝗿𝗲 𝗬𝗼𝘂𝗿 𝗣𝗧𝗙𝗘 𝗵𝗼𝘀𝗲 𝗶𝘀 𝗱𝗲𝘀𝗶𝗴𝗻𝗲𝗱 𝘁𝗼 𝗽𝗿𝗼𝘁𝗲𝗰𝘁 𝘆𝗼𝘂𝗿 𝗽𝗿𝗼𝗰𝗲𝘀𝘀. 𝗕𝘂𝘁 𝗶𝘀 𝗶𝘁 𝗮𝗹𝘀𝗼 𝗽𝗿𝗼𝘁𝗲𝗰𝘁𝗶𝗻𝗴 𝘆𝗼𝘂𝗿 𝗽𝗲𝗼𝗽𝗹𝗲? In many chemical plants and industrial systems, PTFE hoses with stainless steel braiding are widely used because of their excellent chemical resistance, pressure resistance, and durability. However, one small detail is often ignored: Exposed stainless steel braid can scratch gloves, hurt hands, and increase the risk of workplace injuries during installation, handling, or maintenance. That is why we developed an upgraded solution: PTFE liner + Stainless Steel Braid + Silicone Protective Cover This design helps improve: ✅ Safer handling ✅ Better grip and comfort ✅ Reduced hand injury risk ✅ Protection for the stainless steel braid ✅ Cleaner and more professional appearance ✅ Reliable chemical and pressure performance A hose should not only protect your process. It should also pro...

Today, Avient launched PREPERM™ Low Loss Dielectric Thermoplastics for mmWave radome applications – a new portfolio of modified polyphenylene ether (PPE) featuring four grades created to meet the surge in demand for 5G/6G-enabled radar sensing across automotive, intelligent transportation, and humanoid robotics - to help manufacturers overcome signal-loss, warpage, and BSIS compliance barriers. Available globally, the PREPERM portfolio provides a high-performance alternative to conventional glass-fiber-reinforced polybutylene terephthalate (PBT+GF) materials for: ‣ automotive advanced driver assistance systems (ADAS) component manufacturers ‣ traffic radar system producers ‣ next-generation robotics developers Read more details in our press release here: https://bit.ly/4akbats source : LG Chem #5G #automotive #ADAS #radar #radome

𝐓𝐨𝐝𝐚𝐲'𝐬 𝐊𝐍𝐎𝐖𝐋𝐄𝐃𝐆𝐄 𝐒𝐡𝐚𝐫𝐞 𝐀 𝐜𝐥𝐢𝐞𝐧𝐭 𝐜𝐚𝐦𝐞 𝐭𝐨 𝐮𝐬 𝐰𝐢𝐭𝐡 𝐚 𝐬𝐢𝐦𝐩𝐥𝐞 𝐨𝐛𝐣𝐞𝐜𝐭𝐢𝐯𝐞: 𝐒𝐩𝐞𝐞𝐝 𝐮𝐩 𝐜𝐨𝐥𝐨𝐮𝐫 𝐜𝐡𝐚𝐧𝐠𝐞𝐨𝐯𝐞𝐫𝐬. On paper, that sounds routine. In reality? They were running a 650 tonne machine. Black ABS. And needed to move into clear blue PETG. Anyone who has worked in processing knows what that means. Black hides everything. Clear shows everything. Every trace of degraded ABS. Every carbon deposit. Every dead spot in the barrel. Normally, their process looked like this: • Pull the nozzle and end cap • Two operators • Around two hours labour • ~40 kg of regrind PETG to flush • Roughly four hours total downtime • Around 5% colour/spec rejects across the run It wasn’t catastrophic. It was just… accepted. We approached it differently. Instead of strip-down and extended flushing, we focused on material and carbon removal inside the screw and barrel. 20 kg of Aquapurge Ltd BBU. First shot: Splash marks. Short shot. Zero b...