What are the differences in the proportion of halogen-free flame retardants in different types of plastics?

In the application of halogen-free flame retardant technology, the addition ratio of flame retardant is a key factor, which directly affects the flame retardant performance of plastic materials and the use effect of the final product. Different types of plastics have different chemical structures, physical properties, and application scenarios, so the proportion of halogen-free flame retardants added will also vary. Below, we will discuss this issue in the form of a popular science article.

What we need to understand is that there are many types of plastics, the common ones are polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and engineering plastics such as ABS, PC, etc. These plastics have differences in molecular structure, thermal stability, flammability, etc. Therefore, these differences need to be fully considered when selecting halogen-free flame retardants and determining their addition ratio.

For thermoplastics such as polyethylene (PE) and polypropylene (PP), they have good thermal stability and processing properties, so when adding halogen-free flame retardants, they can usually be added at a lower proportion. Achieve better flame retardant effect. At the same time, due to the wide range of application scenarios of this type of plastic, such as wires and cables, automobile parts, etc., the requirements for flame retardant properties are relatively high. Therefore, in actual applications, the proportion of halogen-free flame retardants may be added according to specific needs. Make adjustments.

For plastics such as polyvinyl chloride (PVC) and polystyrene (PS), they are highly flammable, so more halogen-free flame retardants need to be added to achieve the desired flame retardant effect. In addition, this type of plastic may release harmful gases during processing, so when choosing halogen-free flame retardants, you also need to consider their environmental performance.

In the field of engineering plastics, such as ABS, PC, etc., due to their excellent mechanical properties and heat resistance, they are widely used in high-end applications such as electronic product casings, automotive parts, etc. When adding halogen-free flame retardants to such plastics, multiple factors such as their flame retardant properties, mechanical properties, and processing properties need to be comprehensively considered to determine the appropriate addition ratio.

It should be noted that the higher the proportion of halogen-free flame retardant added, the better. Excessively high addition ratio may lead to a decrease in the physical properties of plastic materials, such as reduced strength, poor toughness, etc. At the same time, too much flame retardant may also increase production costs, which is not conducive to product marketing. Therefore, when determining the addition ratio of halogen-free flame retardant, various factors need to be considered comprehensively to achieve the best flame retardant effect and economic benefits.