Material Analysis
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Flame retardant rating of modified styrene-butadiene copolymer not meeting standards
Problem Phenomenon
The flame retardant rating of modified styrene-butadiene copolymer does not meet standards; vertical or horizontal burning tests fail to pass the target rating
Cause Analysis
Flame retardant addition amount is insufficient
The flame retardant has poor compatibility with styrene-butadiene copolymer and is unevenly dispersed
The flame retardant decomposes and fails at processing temperature
Flame retardant system design is improper
Processing temperature is too high and the flame retardant degrades
Solution
Increase flame retardant addition amount
Select flame retardants with good compatibility
Select flame retardants that are stable within the processing temperature range
Optimize flame retardant system design
Control processing temperature to avoid flame retardant degradation
Key Takeaway
Flame retardancy needs to be addressed from addition amount, compatibility and system design
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