4 popular plastic-pellet combinations for injection molding applications

To create a perfect shape, you need the best combinations of plastic granules. This is due to the different properties that each type of plastic can contribute to the end product. Choosing the wrong mix can result in a faulty product.

Injection molding is an economical way to manufacture large quantities of plastic products. As one of the most common manufacturing processes today, it is important for companies to have access to a large number of high-quality plastic pellets. This article provides an overview of some excellent pellet mixes for your project.

1. Combination of polycarbonate / acrylonitrile butadiene styrene (PC-ABS)

The blend of polycarbonate (PC) and acrylonitrile butadiene styrene (ABS) is currently one of the most popular on the market. With the right ratio of the two materials, the molecular weight of polycarbonate and any other additional thermoplastics, you can create unique heat-resistant products.

What makes PC and ABS a perfect match are their extraordinary properties. While the former is tough and heat-resistant, the latter is extremely ductile and easy to process. The combination is also cheaper than using polycarbonate alone.

Due to their properties, PC-ABS plastic compounds are one of the most popular thermoplastics that engineers prefer. They are strong, stiff, durable and resistant to high heat. Designers also love them because they are easy to color or use for printing purposes. PC-ABS plastics are widely used in the manufacture of automotive and electronic parts.

2. Combination of acrylonitrile butadiene styrene and polyvinyl chloride (ABS / PVC)

You can combine acrylonitrile butadiene styrene (ABS) and polyvinyl chloride (PVC) through a process known as melt blending. PVC is the second most widely used material in the manufacture of plastics because of its versatility. It’s rigid, tough, and affordable. On the other hand, ABS has the best thermal, electrical, mechanical and chemical properties.

However, these materials also have weaknesses. PVC has poor thermal stability and low impact strength. On the other hand, ABS is highly flammable, expensive and easily weathers. The combination of the two helps get rid of their inferior properties.

ABS / PVC plastics have high impact strength, better rigidity and excellent thermal properties. They’re also heat-resistant and affordable. Because of these properties, these compounds are used in the manufacture of electronic products such as switches, buttons and plugs. The automotive industry also relies on ABS / PVC to make clutches, vehicle panels, and more.

ABS and PVS can be suitable for making black and white molds. This is because ABS is mainly black while most PVC plastics are white.

3. Combination of polycarbonate and polybutylene terephthalate (PC / PBT)

The toughness and stability of polycarbonate (PC) and the solvent resistance of poly butylene terephthalate (PBT) make better polymer blends. A PC / PBT product has good heat, chemical and impact resistance.

In addition to its toughness and heat resistance, PC also has better transparency properties compared to many types of glass. The combination of the properties of these two polymers makes PC / PBT suitable for use in applications that require high performance properties. The automotive industry can also use them to manufacture gearboxes and bumpers.

4. Combination of polyamide and polyphenylene sulfide (PA / PPS)

Engineers use polyamide (PA) widely. It has excellent properties such as good strength, processability, low density and solvent resistance. However, it has poor fire and mechanical resistance.

On the other hand, polyphenylene sulfide (PPS) is very heat-resistant and has better mechanical properties. It is also resistant to corrosion from chemicals and other solvents. However, it is easy to break and expensive.

To improve the weaknesses of both polymers, you can blend them into a more durable alloy with other excellent properties. PA / PPS blends are used in the automotive industry to make engine covers, airbag canisters, wheel covers and more. In the food and beverage industry, this alloy polymer is used to protect food from contamination by neighboring components.

Find out more about combinations of plastic pellets

Many combinations of pellets have been tried and tested over the years with varying degrees of success. Hence, it is important to do your research before deciding on a polymer blend. Contact us today for more information on plastic pellet combinations for your custom injection molding application.

The post 4 Popular Plastic Pellet Combinations for Injection Molding Applications first appeared on Proto Plastics.

Comments are closed.