Specific Gravity (Density) of PPS

PPS (Polyphenylene Sulfide) is a highly crystalline specialty engineering plastic with excellent high temperature resistance, flame retardancy and chemical corrosion resistance.

Its basic density range is stable and less affected by crystallinity, and the density varies slightly among different grades and modified types, as detailed below:

Neat Resin PPS: 1.34～1.36 g/cm3, typical value 1.35 g/cm3, the density standard for unmodified basic grades

Glass Fiber Reinforced PPS (10%～40% Glass Fiber): 1.45～1.65 g/cm3, the higher the glass fiber content, the more significant the density increase, while enhancing rigidity and dimensional stability

Mineral Filled PPS (Calcium Carbonate / Talc Filled): 1.40～1.55 g/cm3, density is positively correlated with filler loading, focusing on cost reduction and molding shrinkage improvement

Glass Fiber + Mineral Composite Reinforced PPS: 1.50～1.70 g/cm3, balancing the strength of glass fiber and dimensional stability of minerals, with density between single reinforcement systems

Flame Retardant PPS (Mainly Halogen-Free Systems): 1.35～1.45 g/cm3, halogen-free flame retardant addition has minimal impact on density, meeting environmental flame retardant requirements in the electronic and electrical industry

Wear Resistant Modified PPS: 1.35～1.40 g/cm3, density rises slightly after adding wear-resistant lubricants, without affecting core mechanical and heat resistance properties

This density parameter is a core basis for the design of automotive engine peripheral components, electronic connectors, chemical anti-corrosion parts and precision structural parts. The stable density brought by high crystallinity makes it widely used in working conditions with high temperature, high corrosion and high precision requirements. Density calculation is also key data for product weight control, mold design and assembly accuracy control, while matching its core properties of high temperature resistance, high flame retardancy and low warpage.