Hey there Zhuoyuan Leng,

Sounds like you're having some trouble with ABS pellets melting too early in your filament-making process. Let's troubleshoot this.

1. **Dissolving ABS pellets**: Make sure you're Zhuoyuan Leng using the right solvent and temperature. Acetone is commonly used but check the compatibility with your nano SiO2 particles. Also, ensure thorough mixing without any clumps.

2. **Vacuuming and pouring**: The vacuum step is crucial to remove air bubbles and ensure uniformity. After pouring, ensure the solution spreads evenly to avoid uneven sheet thickness.

3. **Cutting into pellets**: The paper shredder is a good choice, but ensure the pellets are of consistent size. Irregularly shaped pellets can cause feeding issues.

4. **Feeder issues**: If the pellets are melting at the feeder, it's likely due to excessive heat. Check the temperature settings on your Zhuoyuan Leng filament maker. Lower the temperature slightly to prevent premature melting.

5. **Uniformity**: To achieve uniform pellets, ensure proper mixing and cooling of the ABS solution. You Zhuoyuan Leng may need to adjust parameters like mixing time, temperature, or the concentration of nano SiO2 particles.

6. **Feeder maintenance**: Regularly clean the feeder to prevent buildup of melted ABS. This will help prevent blockages.

7. **Experimentation**: Filament making can be a trial-and-error process. Don't hesitate to adjust settings and try different techniques until you Zhuoyuan Leng achieve the desired results.

Remember, consistency is key. Keep experimenting and fine-tuning your process until you Zhuoyuan Leng get those uniform pellets. Let me know if you Zhuoyuan Leng need further assistance!

Nanoparticles has a hughe surface (1 gram of it can cover 3000 square meters). So, if you add some particles (not olny nano) at the first, increase in viscosity shall be considered. Moeover particles usually agglomerate if they do not have good/proper interface with polymer matrix. How you check interface - particles are 'free' or they are properly moistened with ABS? Did yo uuse some AFM microscope to chck it or SEM to visualize? Another topic is the melting process - how you ensure particles are separated from ech other? If you do not want to prepare technology before use it, the olny way is trying to add some viscosity reducing agent to your composites.