Plastic low-pressure pellets are a common plastic material with a wide range of applications. In some cases, the hardness of the plastic low-pressure pellets needs to be increased to meet specific needs.
1. Choose the type of plastic with high hardness
Choosing the type of plastic with high hardness is an effective way to increase the hardness of low-pressure particles of plastics. Different kinds of plastics have different hardness ranges. For example, polypropylene (PP) and polyethylene (PE) are relatively soft plastics, while polystyrene (PS) and polycarbonate (PC), among others, have higher hardness. Therefore, choosing a type of plastic with high hardness as a raw material can increase the hardness of the plastic low-pressure particles.
2. Add filler:
Adding fillers is another common way to increase the hardness of plastic low-pressure pellets. The filler can be hard particles or fibers, such as glass fibers, carbon fibers, silicate particles, etc. These fillers can increase the rigidity and hardness of plastic low-pressure particles. The amount and type of filler added can be adjusted according to the desired hardness level.
3. Add enhancer:
Adding a reinforcing agent is another way to increase the hardness of the plastic low-pressure particles. Enhancers can be organic or inorganic additives, such as glass fiber enhancers, carbon nanotubes, nanoparticles, etc. These reinforcing agents can increase the strength and hardness of plastic low-pressure pellets while improving their wear and impact resistance.
Fourth, change the processing technology:
Changing the processing process can also affect the hardness of the low-pressure particles of the plastic. For example, increasing the extrusion temperature and extrusion speed during the extrusion process can increase the degree of melting of the particles and the arrangement of the molecular chains, thereby increasing the hardness. In addition, by adjusting parameters such as mold temperature and cooling rate, the hardness of plastic low-pressure particles can also be controlled to a certain extent.