Processing Machinery
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TPE aging performance decline
Problem Phenomenon
After a period of use, the mechanical properties of TPE products decline significantly and the appearance deteriorates
Cause Analysis
TPE has poor heat resistance and UV resistance and ages easily; SBS systems age more easily, and SEBS aging resistance improves after hydrogenation; stabilizers can inhibit but cannot eradicate; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
①add heat-resistant and weather-resistant stabilizers; ②UV absorbers and light stabilizers; ③evaluate SEBS replacement for outdoor applications of SBS systems; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
TPE aging is an inherent shortcoming of the molecular structure; stabilizer delay and SEBS replacement are the two ways out; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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