Processing Machinery
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DSTDP insufficient mixing
Problem Phenomenon
After DSTDP is compounded with filler/additives, dispersion uneven, local agglomeration
Cause Analysis
Screw mixing section length insufficient; number of kneading blocks insufficient; feeding method improper, additives and DSTDP not fully contacted
Solution
1) Increase screw mixing section length to 3-4D; 2) increase number of kneading blocks; 3) additives added after the side feeding port to increase mixing time
Key Takeaway
Insufficient mixing is caused by improper screw design; increasing the mixing section is key
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