Engineered Graphite Additives Enhance Performance in a Wide Variety of Applications

Graf+® graphite powders can be added to a range of polymers to enhance thermal and electrical conductivity, reduce degradation to UV radiation, and increase insulation value in foams and boards. NeoGraf’s Graf+ natural and synthetic graphite powders and graphene nanoplatelets (GNP’s) are available in a range of particle sizes, BET surface areas, Scott densities, and purities depending on the end use application.

Graf+ graphite powders and masterbatches are used in a broad range of applications including additives in batteries, foams, greases, extruded polystyrene insulation boards, fuel cells, paints, adhesives, chemical/mechanical polishing, coatings and roofing products. Primary markets are building and construction, energy storage, semiconductors, lubricants and coatings.

Why GRAF+® Graphite Powders

Graf+ synthetic and natural graphite powder additives enhance performance in a range of products and applications:

In extruded polystyrene (XPS) foam boards expanded graphite powders provide multiple functions. Addition of as little as 1-3% graphite:

  • Improves thermal insulation value ~ 14-18% by attenuating infrared radiation
  • Acts as an ultraviolet light UV stabilizer
  • Acts as a gas barrier
  • During foaming the graphite acts as a nucleating agent and modifies the rheology of the blowing agent-laden polystyrene melt and reduces the amount of static on the board surface during the shaping process

In battery applications (alkaline, li-ion, lead acid) both natural and expanded natural graphite powders are commonly used as conductive additives, providing excellent thermal and electrical conductivity, chemical stability and high purity. Expanded graphite, by virtue of its higher surface area, is used where the goal is to maximize the active material content.

In thread sealant pastes graphite powders can be used for long life sealing performance even under the most severe temperature and pressure conditions.

In polymers graphite additives increase electrical and thermal conductivity for anti-static, static dissipative and conducting polymer applications.

GRAF+® Product Portfolio

NeoGraf’s graphite powders are available as dry powders or compounded with polymers as black masterbatches. Specialty grease and lubricants formulations are also available. Our manufacturing capabilities allow us to also offer customizable solutions to meet your unique application requirements.

Graf+ graphite powders are offered as:

  • Natural graphite (NG) derived from naturally occurring flake graphite
  • Expanded Natural Graphite (ENG) in which flake graphite is intercalated with acids and then expanded at high temperatures to produce a higher surface area powder
  • Synthetic Graphite (SG) derived from either graphitized coke, polyimide or a pitch coke/blend

All Graf+ Graphite Powders are available with a particle size range of ~ 5-25 µm with coarser sieved fractions available on request. Graphite purity varies from < 95% Carbon to > 99.9% Carbon.  Our powders can be made in masterbatches tailored for use in Polystyrene (PS), Low-Density Polyethylene (LDPE) or Polyethylene Terephthalate (PET) applications. They can also be combined with mineral oil and petrolatum to produce pastes.

Features & Benefits

    • Particle sizes from ~ 5-25 µm to meet a variety of application demands; coarser sieved fractions available on request
    • Purity levels from ~95% carbon to 99.9+% carbon to meet a range performance requirements
    • Multiple starting material options including natural graphite, expanded natural graphite and synthetic graphite
    • Masterbatches available for easier logistics and manufacturing
    • Customized particles size, purity and raw material options available
    • Scott Density from 0.05-0.16 g/cm3
    • Surface Area from  4 -90 m2/g

    NeoGraf’s global team of application engineers specialize in developing and manufacturing high-quality flexible natural and synthetic graphite material solutions for today’s advanced applications. Regardless of your product design phase (concept, prototyping, or mass production), we offer technical answers and thermal modeling support to some of your most challenging problems with a fast response time.

  • Particle sizes from ~5-25 µm to meet a variety of application demands. Coarser sieved fractions are available on request
  • Purity levels from < 95% to 99.9+% carbon to meet a range of performance requirements
  • Multiple starting material options including natural graphite, expanded natural graphite and synthetic graphite


Polystyrene Insulation R-value Enhancements Using Graf+ Graphite Powder & Graf-X Graphene Nano-Platelets

The building and construction market utilizes many different types of insulation to meet or exceed building standards throughout the world. One of the hallmarks to a well-designed building is the energy efficiency of the building as a system. A key component of the energy efficiency system is the insulation selected. This white paper explores how Graf+® graphite powder and Graf-X™ graphene nanoplatelets revolutionize polystyrene insulation, one of the most cost-effective energy efficiency systems.Learn More

Thermal Enhancements Using Graf+ Graphite Powders & Graf-X Graphene Nanoplatelet (GNP) Additives

This paper aims to provide readers with a comprehensive understanding of NeoGraf Solution's Graf+® micronized graphite powders and Graf-X™ graphene nanoplatelets and their impact on thermal conductivity properties in foam materials. The following pages offer an overview of the foam types discussed in this paper, as well as an explanation of thermal conductivity and how NeoGraf powders enhance the thermal performance of these foams. Learn More

Are you looking for a graphite additive to enhance the performance of your product? Contact us, and we can help you get started.