Carbon based nanoparticles – altravia

Graphene Nanoplatelets (GNPs) – Ultra-Thin, Two-Dimensional Carbon Nanomaterials

altravia — Thu, 04 Dec 2025 15:54:08 +0000

Graphene Nanoplatelets (GNPs) are ultra-thin, two-dimensional carbon nanomaterials composed of several layers of graphene stacked into plate-like structures. With exceptional electrical, thermal, mechanical, and barrier properties, GNPs serve as a next-generation additive for high-performance composites, coatings, elastomers, polymers, energy devices, and functional materials.

Engineered through advanced exfoliation and purification processes, our GNPs offer controlled thickness (1–10 nm), high lateral dimensions (0.5–20 µm), and extremely high aspect ratios, enabling outstanding reinforcement efficiency even at low loading levels. Their unique conjugated sp²-hybridized carbon structure provides superior electron mobility, excellent mechanical strength, and remarkable chemical stability, making them ideal for demanding industrial and research applications.

Key Characteristics

High Surface Area: Typically, 300–700 m²/g depending on grade, enabling efficient dispersion and strong matrix interaction.
Excellent Electrical Conductivity: Delivers rapid electron transport, suitable for conductive coatings, EMI shielding, sensors, and battery electrodes.
Superior Mechanical Reinforcement: Enhances tensile strength, modulus, and impact resistance in polymers, composites, and elastomers.
Outstanding Thermal Conductivity: Efficient heat dissipation ideal for thermal interface materials, heat spreaders, and engineered plastics.
Chemical Stability: Resistant to oxidation, acids, and solvents; ideal for harsh chemical environments.
Low Density & Lightweight: Enhances performance without significant weight addition, suitable for aerospace, automotive, sports goods, and structural applications.

Product Features

High purity (≥ 98% carbon content)
Controlled particle size distribution
Low defect structure with preserved graphitic domains
Available in hydrophilic, hydrophobic, and functionalized grades (–COOH, –OH, NH₂)
High dispersion capability in water, epoxy, polymers, oils, resins

Applications

Polymer & Composite Reinforcement

Enhances mechanical strength, durability, fatigue resistance
Used in plastics, rubbers, fibers, resins, and thermosets

Energy Storage & Electronics

Conductive additive for Li-ion, Na-ion, supercapacitor electrodes
Improves charge transport, cyclic stability, and energy density
EMI shielding materials and printed electronics

Thermal Management

Thermal interface materials (TIMs)
Heat spreaders and dissipation modules for electronics
High-performance greases, pads, and industrial coolants

Coatings, Paints & Inks

Anti-corrosion coatings
Anti-static and conductive inks

Rubber, Elastomers & Tire Industry

Enhances abrasion resistance, tensile strength, and longevity
Replaces conventional carbon black with superior performance

Structural Materials

Aerospace and automotive lightweight composites
Construction materials, cement additives, and advanced concrete

Performance Advantages

Significant property enhancement at low loading (0.1–5%)
Improves mechanical, electrical, and thermal performance of host materials
Environmentally safe and chemically stable
Cost-effective alternative to CNTs and graphite nanofillers

Available Grades

GNP-M (Micron-Scale Platelets) – for composites & coatings
GNP-T (Thin Few-Layer Platelets) – for electronics, EMI, conductive inks
GNP-F (Functionalized GNP) – for polymer compatibility (COOH/OH/NH₂)
GNP-SC (Supercapacitor Grade) – for energy devices
GNP-Therm – for thermal management applications

Graphene Nanoflakes – High-Purity, High-Performance 2D Carbon Material

altravia — Thu, 04 Dec 2025 14:41:48 +0000

Graphene Nanoflakes (GNFs) are ultra-thin, micron- to nano-sized platelets derived from high-quality graphene sheets. Engineered for superior electronic, mechanical, and thermal performance, GNFs combine the advantages of pristine graphene with a process-friendly flake morphology, making them highly versatile for industrial, scientific, and advanced technological applications.

Structure & Composition

Graphene nanoflakes consist of:

Few-layer graphene sheets (typically 1–10 layers)
Lateral dimensions ranging from 20 nm to several micrometres
High edge density, enabling accelerated surface reactions
Purity levels up to 99% carbon, depending on grade

This unique combination of large surface area, atomic thickness, and abundant edge sites makes GNFs exceptionally active and dispersible.

Key Features & Properties

Ultra-high surface area (500–900 m²/g)
Excellent electrical conductivity
Superior mechanical stiffness and flexibility
Thermal stability > 600°C in inert conditions
Active edge sites for enhanced functionalization
Easy integration in polymer, metal, and ceramic matrices
Stable dispersion in water and organic solvents (functionalized grades available)

Advantages of Graphene Nanoflakes

Enhanced electron transport pathways for batteries and supercapacitors
Improved mechanical reinforcement in composites
High catalytic activity due to exposed graphene edges
Boosted thermal and electrical performance in coatings and adhesives

Applications

Graphene nanoflakes are widely used across advanced materials, electronics, and energy sectors:

Energy & Electronics

Electrode additive for Li-ion, Na-ion, K-ion, and dual-ion batteries
High-performance supercapacitor electrodes
Transparent conductive films, EMI shielding, conductive inks

Composite Reinforcement

Polymer, epoxy, and resin enhancement
Strengthening of rubber, plastics, and ceramics
Aerospace and automotive lightweighting

Coatings & Surface Engineering

Antistatic and conductive coatings
Heat-dissipation and corrosion-resistant coatings
Barrier films and protective layers

Catalysis & Environmental Applications

Catalyst support for metal nanoparticles
Photocatalytic and electrocatalytic systems
Water purification and pollutant adsorption

Sensors & Biomedical Applications

Electrochemical sensing platforms
Biosensor functional interfaces

Technical Specifications

Parameter	Value (Approx.)
Carbon Purity	98–99%
Thickness	1–10 graphene layers
Lateral Size	20 nm – 5 µm (grade-dependent)
Surface Area	500–900 m²/g
Electrical Conductivity	Up to 10⁶ S/m
Ash Content	< 1%
Appearance	Black/grey ultrafine powder

Custom sizes, surface functionalization (–OH, –COOH, –NH₂), and dispersions available upon request.

Why Choose Our Graphene Nanoflakes?

Produced through controlled top-down exfoliation ensuring consistency
High purity with minimal defects
Batch-to-batch reproducibility
Compatible with industrial-scale processing
Available in powder, paste, dispersion, and composite-ready formats

Graphene Nanotubes (GNTs) – Ultra-Long, One-Dimensional Conductive Networks

altravia — Thu, 04 Dec 2025 14:17:22 +0000

Graphene Nanotubes, also known as single-wall or multi-wall carbon nanotube-like structures with graphene-derived tubular morphology, deliver unmatched electrical conductivity, mechanical strength, and aspect ratio. Their one-dimensional structure creates efficient electron pathways even at extremely low loading levels in matrices.

Key Features

Ultra-high aspect ratio (>10,000) enabling long-range conductive networks
Exceptional tensile strength and elasticity
Superior electrical and thermal conductivity
Effective even at 0.01–0.1% loading in polymers or rubbers
High purity and consistent tube morphology

Applications

Anti-static and conductive polymers
Rubber reinforcement for tires and industrial elastomers
Lightweight structural composites
EMI shielding and thermal interface materials
Electrode additives for batteries and supercapacitors

Graphene Oxide (GO) – Highly Functionalized, Exfoliated Nanomaterial

altravia — Thu, 04 Dec 2025 14:10:19 +0000

Graphene Oxide (GO) is an oxygen-rich, single-to-few-layer graphene derivative produced via advanced oxidation and exfoliation routes. Its abundant epoxy, hydroxyl, and carboxyl functional groups make it uniquely dispersible in aqueous and organic systems, enabling versatile chemical modification.

Key Features

Excellent dispersibility in water and polar solvents
Rich surface functional groups for easy chemical doping and composite formation
High aspect ratio, large surface area, and strong mechanical reinforcement capability
Interlayer tunability suitable for membranes and barrier materials
Scalable, uniform production ensuring consistent quality

Applications

Nanocomposites (polymers, rubber, cement, plastics)
Membranes for filtration and desalination
Sensors, electronics, transparent films
Photocatalysis and environmental remediation
Precursor for reduced graphene oxide and functional hybrids

Reduced Graphene Oxide (rGO) – Conductive, Versatile, and Cost-Effective

altravia — Thu, 04 Dec 2025 14:04:19 +0000

Reduced Graphene Oxide (rGO) is a chemically or thermally reduced form of graphene oxide designed to restore electrical conductivity while maintaining tunable functional groups. This makes rGO a perfect balance between performance and affordability for large-volume industrial applications.

Key Features

High electrical conductivity due to partial restoration of the sp²-carbon network
Controlled oxygen functional groups enabling strong interaction with polymers, metals, and ceramics
Superior dispersibility in water, solvents, and resins
High mechanical integrity and excellent film-forming properties
Available in various surface chemistries to suit specific industry needs

Applications

Battery electrodes, supercapacitors, and fuel cells
Conductive inks, paints, and coatings
Rubber/plastic composites and masterbatches
Catalyst support materials
Water purification membranes and adsorbents

Bharat Graphene – Premium-Grade Graphene Sheets

altravia — Thu, 04 Dec 2025 13:09:28 +0000

Bharat Graphene represents our flagship class of high-purity, few-layer graphene materials engineered for advanced industrial, scientific, and commercial applications. Produced through a controlled oxidation–reduction and exfoliation process, Bharat Graphene delivers exceptional structural uniformity, high electrical conductivity, and superior mechanical strength, enabling next-generation performance in energy devices, nanocomposites, coatings, electronics, and sensors.

Key Features

Few-layer graphene structure (1–5 layers) with extremely high surface area.
Outstanding electrical conductivity, ideal for energy storage and conductive inks.
High tensile strength and flexibility, enhancing polymer reinforcement.
Chemically stable, thermally robust, and compatible with diverse matrices.
Industrial-grade purity with minimal defects and controlled oxygen content.

Applications

High-performance supercapacitors and Li/Na-ion battery electrodes
EMI shielding, conductive films, and smart coatings
Polymer, rubber, and cement reinforcement
Thermal interface materials and heat spreaders
Sensors, wearable electronics, composites