The phenomenon and causes of impurities in the raw materials of Automotive Wiring Harness Protection Sleeve

The production of Automotive Wiring Harness Protection Sleeve is very strict when selecting raw materials, because the raw materials will affect the product quality of Automotive Wiring Harness Protection Sleeve. For some precision purposes, there can be no mistakes. The following is an example of the phenomenon and reasons of impurities appearing in Automotive Wiring Harness Protection Sleeve.

Recently, a Automotive Wiring Harness Protection Sleeve had an impurity problem. The product was perfect before the second stage. After the second stage, about 10% of impurities appeared. It looked like a small protrusion on the outside. It was invisible to the naked eye when it was cut open. But under the microscope, it can be seen that Some yellow-brown particles can be crushed, and the white aniseed has been dried and has no impurities. Anti-aging agents have not been used. I have tried several batches of different models but to no avail, so I plan to check the coupling agent. There are impurities after the second stage. Why?
The temperature in the second stage is high and takes a long time, and a certain raw material inside is not fully dispersed. The additives are dried and cooled in the furnace. After adding the medicine, make it thin and wrap it in a triangular bag. After mixing, leave it for no less than 12 hours. Make it fresh before use. For dispersion problems, the raw rubber should be slightly hot before adding the compounding agent, and the addition of materials should be slow at the beginning of mixing. For internal mixing, consider mixing the compounding agent evenly before adding it to the internal mixer, and control the temperature and mix it for a little longer. It may be that the excipients in the formula are unevenly dispersed or difficult to disperse. Try Botong a few more times or use a filter to filter, as it may be effective.