Extrusion & Post
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PB polybutene-1 dimensional instability problem in pipe extrusion
Problem Phenomenon
Polybutene-1 PB exhibits dimensional instability during pipe extrusion processing at 180-230°C.
Cause Analysis
PB molecular weight is the key factor.
Solution
Post-treatment promotes crystal form transition.
Key Takeaway
PB pressure pipes need to control crystal form transition.
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