Alumina Trihydrate (ATH), Magnesium Hydroxide (MDH) and Kemgard Engineered Molybdate Compounds Precipitated Aluminum Hydroxides Flame Retardance and Smoke Suppression High Chemical Purity Advanced Surface-Treatment Technology Global Availability Dedicated to Outstanding Technical Service and Customer Care
Flames and Smoke Don t Like Us When it comes to high-performing, non-halogen fire retardant additives, Huber Engineered Materials is the only name you need to know. We offer a wide variety of flame retardants and smoke suppressants for many different applications. Metal hydroxides are the largest volume flame retardants used worldwide. The two most widely used products are Alumina Trihydrate, also known as ATH or by its chemical composition, Al(OH) 3 and Magnesium Hydroxide, known as MDH or by its chemical composition Mg(OH). Huber manufactures many grades of ground and precipitated ATH, and we also produce a wide variety of surface-treated ATH products. In addition, we supply two types of MDH, both of which are available in surface-treated form. Lastly, Huber offers a variety of Kemgard molybdate flame retardants and smoke suppressants. Huber s Fire Retardant Additive Chemistry Offerings 3 Alumina Trihydrate (ATH) - Ground - Precipitated - Optimized - Surface-Treated 3 Magnesium Hydroxide (MDH) - Technical - Premium - Surface-Treated 3 Molybdate Compounds Huber ATH, MDH and Molybdate Brands 3 Hydral 3 Hymod Surface-Treated ATH 3 Kemgard Flame Retardants and Smoke Suppressants () 3 Micral ATH 3 MoldX Optimized ATH 3 SpaceRite 3 Vertex MDH 3 Zerogen MDH With four U.S. manufacturing locations, three recent key acquisitions and a continual investment in expansion and the creation of innovative new products, Huber is committed to providing fire retardant products precisely designed for the intended application. Inside this brochure, you will find information about why Huber s chemistry imparts fire retardance, a list of some of Huber s key products sold to market and a guide to products by application. Huber stands at the forefront of the flame retardant and smoke suppressant additive industry providing product advancements and technical and service support that is second-to-none. A consultative selling process ensures our customers get products designed specific for their applications. Comparing ATH and MDH Thermal decomposition reaction (endothermic): Al(OH) 3 Al O 3 + 3H O H = -80 cal/g Mg(OH) MgO + H O H = -38 cal/g Take heat away from the flame Water vapors dilute volatile polymer decomposition products (fuel) Form protective metal oxide layer on polymer surface Neither ATH nor MDH contain halogens. When exposed to heat, these metal hydroxides decompose to form water molecules in an endothermic reaction. This results in reduced flame spread and smoke generation. 0 Physical Property Comparison of ATH and MDH Property ATH MDH Physical form Powder Powder Particle morphology Hexagonal Hexagonal platelet platelet Color White White Specific gravity, g/cm 3.4.36 ph value 9-0 0 - Mohs hardness.5-3.5.0-3.0 Refractive index.57.58 Decomposition temperature 0 C / 48 F 330 C / 66 F Heat of decomposition, cal/g 80 38 Theoretical loss on ignition 34.6% 3.0% 00 Weight Loss (%) 90 80 70 60 0 MDH ATH 00 00 300 400 500 600 This graph shows that MDH decomposes at a higher temperature than ATH, making it useful for engineering thermoplastic resins such as polyamides and polypropylene. Temperature ( C)
Huber s Key ATH and MDH Product Offerings SB-30 90 Coarse ATH tolerating coarse top size SB-36 5 Coarse ground ATH Carpet backing; Epoxy potting & encapsulation SB-36 9 SMC; BMC; Hand lay-up; Epoxy potting & encapsulation SB-33 Unsaturated polyester composites; Epoxy potting; Textiles SB-336 5 SMC; BMC; Hand lay-up; Wet mat; Laminating SB-43 9 Flame retardant roof coatings; Polyester and epoxy composites; Rubber SB-63 3.6 Polyurethane foam; Latex-based formulations Micral 53 5 Ground, fine ATH Wall coverings Micral AM550 5 Ground, fine ATH Coatings; Adhesives; Epoxy Micral 63 3.5 Ground, fine ATH Rubber; Silicone; Ceramics; Polishing compounds Micral 93 Ground, ultrafine ATH SMC; BMC; Pultrusion; Gel coats; Silicone elastomers; Rubber Micral 500.5 Ground, ultrafine ATH Wire & cable; Silicone elastomers; Coatings Treated ATH Hymod SB336 SE 5.5 ; Epoxy functional Epoxy Hymod SB43 SG 9 ; Hydrophobic treatment High-moisture environments Hymod SB43 SH 9 ; Alkyl functional Composites Hymod M63 SP 3.5 ; Vinyl functional Peroxide-cured silicone rubber Hymod M500 SPD.5 ; Vinyl functional Wire & cable; Rubber Optimized ATH MoldX A400 MoldX A0 MoldX S45 MoldX A05 MoldX P8 MoldX P Hymod M9400 SF Hymod M9400 SP Hymod M9400 SG Hydral 70 Hydral PGA-SD SpaceRite S-3 Hydral Coat Untreated MDH Vertex 60 Vertex 00 Zerogen 50 Treated MDH Vertex 60 HST Vertex 60 SV Zerogen 50 SP Zerogen 00 SP 0 0 9 6 5.5 4.5 0.5.8.5.8.8 0.7 Optimized ATH; Best balance of physical properties with outstanding fire retardance Optimized ATH; Highest ATH loadings with processable viscosity Optimized ATH; High loadings, good viscosity Optimized ATH Optimized ATH; High glass content Optimized ATH; Highest glass content ; Phenyl functional ; Vinyl functional ; Alkyl functional Coarse technical MDH Fine technical MDH Premium MDH Technical grade MDH, fatty acid treatment Technical grade MDH, proprietary surface treatment Vinyl functional, premium MDH Vinyl functional, premium MDH Zerogen 00 SV 0.7 Premium MDH with proprietary treatment Wire & cable; Electrical & electronics Note: Huber offers a comprehensive portfolio of flame retardants and smoke suppressants. The ATH and MDH products listed above represent a cross-section of key products commercially available. If you don t see the flame retardant or smoke suppressant you are seeking to meet your requirements, we invite you to contact us to discuss products available specific to your application or situation. 3 SMC; BMC; Hand lay-up; Spray-up SMC; BMC; Epoxy; Urethane SMC; BMC; Pultrusion; Many composites applications Resin transfer molding; Pultrusion; Resin infusion Pultrusion; Resin infusion Most stringent pultrusion applications PVC; Wire & cable Peroxide-cured silicone rubber; High-voltage insulators Platinum-cured silicone rubber; Hydrophobic coatings Wire & cable; Silicone elastomers Wire & cable Glossy coatings; Color pigment extender Coil & glossy coatings Roofing membrane; Rubber compounds Wire & cable jacketing; Conduit Wire & cable; Electrical & electronics Roofing membrane; Rubber compounds Plastic pallets; Injection molded plastics; Conduit Wire & cable; Electrical & electronics Wire & cable; Electrical & electronics
and Huber Product Offerings for Flame Retardance and Smoke Suppression. Fiberglass Reinforced Polyester Molding and Pultrusion 3 to 5 microns SB grades Micral grades MoldX Optimized ATH grades ATH is a cost-effective, non-reactive flame retardant used in a wide variety of molding compounds. Huber has a complete range of particle sizes to allow the compounder to achieve high loadings of ATH which improve flame retardant performance and reduce the amount of resin in SMC, BMC, pultrusion and other molding applications.. Wire and Cable Compounds Treated precipitated and ground ATH Hymod grades -6 microns Hydral and Micral grades Treated and untreated MDH Vertex and Zerogen grades Wire and cable applications require flame retardance and low-smoke generation. Huber has a broad line of molybdate, ATH and MDH products that impart outstanding smoke suppression in thermoplastic wire and cable products. Especially in high-performance applications, chemically-treated ATH and MDH products offer these advantages compared with untreated ATH: Improves dispersion uniformity.increases color stability Higher throughput rates Improves physical properties and Enhances flame retardant performance electrical performance 3. Engineering Thermoplastics Treated MDH Vertex grades The MDH decomposition temperature of 330 C (66 F) makes it ideal for use in thermoplastic systems which compound at high temperatures such as: Polypropylene Polycarbonate Polyamide Polybutylene Terephthalate (PBT) Huber s product line includes specialty-treated MDH products which work well in polyamide systems. Polyamide formulations containing Kemgard 98 and antimony oxide have improved thermal stability properties versus using antimony oxide alone. 4. Roofing Membranes Treated ATH Treated MDH products Micral grades Hymod grades Vertex 60 series Huber developed surface-modified ATH and MDH products to provide outstanding physical properties, water-resistance, fast dispersion and flame retardant performance for membranes used in roofing applications. MDH is an excellent flame retardant, but its high polarity surface makes it somewhat incompatible with low polarity elastomers such as EPDM rubber and thermoplastic polyolefin (TPO). Treating the surface of the MDH allows its flame retardant performance to be incorporated into roofing membranes. 4
5. Silicone Rubber Treated precipitated and ground ATH Hymod SP and SG grades ATH is used in silicone rubber to reinforce the compound and impart arc track resistance. In order to achieve outstanding physical and electrical performance in peroxide-cured silicone rubber compounds, Huber developed its SP surface treatment products. Its low-surface energy facilitates mixing and allows for high filler loadings. The compounds do not stick to molds and remain very hydrophobic. Hymod M9400 SP is specifically designed for high voltage silicone rubber insulators. 6. Rubber Treated ATH SB and Hydral grades Hymod grades ATH is commonly used in organic rubber compounds such as EPDM, EVA and SBR for smoke suppression and flame retardance in applications such as belts, hoses and carpet backing. An example is the mining industry, which has established new non-halogen fire retardant Mine Safety and Health Administration (MSHA) requirements. ATH and Kemgard products can be used in mining applications. 7. Adhesives, Caulks and Sealants Treated ATH SB and Micral grades Hymod grades Some adhesives, caulks and sealants used for automotive and building material applications are required to meet certain criteria for flame retardance and low-smoke generation. 8. Carpet Backing and Textiles SB grades Latex, urethane and vinyl binders, used in fabric and carpet manufacturing, are flammable. Coarse ATH is a standard flame retardant for commercial and industrial carpet applications, and molybdates help to reduce smoke generation. 9. Coatings SB, Micral and SpaceRite grades SB-43 is the standard ATH grade that has been used for elastomeric roof coatings for over 0 years. Gel coats used in thermoset applications often contain ATH. Fine particle size grades of ATH such as SpaceRite S-3 can effectively extend white and color pigments in coatings while maintaining high gloss. 5
Surface Treatments Increase Performance To aid processing and improve physical, electrical, flame or chemical resistance properties, Huber has developed a broad line of high-performing, surface-modified grades. Surface treatments applied to metal hydroxides can benefit you in the following three areas:. Powder Handling and Storage 3 Increase shelf life (MDH) 3 Reduced moisture absorption (during storage) 3 Improved powder flow. Compounding and Processing 3 Improved compatibility with polymer 3 Better wet-out 3 Better, faster dispersion 3 Lower viscosity, higher loadings 3 Greater throughput rate 3 Color stability 3 Reduced absorption of expensive additives 3 Improved cure properties 3. Polymer Compound Performance 3 Hydrophobicity, lower water pick-up 3 Improves initial and aged mechanical properties u Tensile u Flexural u Impact / Toughness 3 Improves initial and aged electrical properties 3 Thermal stability 3 Weatherability 3 Fire retardancy 3 Compound color Huber s ATH and MDH Surface Treatments Surface Base Metal Polymer Performance Treatment Hydroxide Type Benefits SP Vinyl Silane ATH, MDH Polyolefins; Silicone elastomers Mechanical properties; Flame retardance (FR) SG Alkyl Silane ATH, MDH Polyolefins; Epoxy; Urethane; Low viscosity; Hydrophobicity Polyester; Silicone elastomers SF Phenyl Silane ATH, MDH PVC Improved dynamic thermal stability; Hydrophobicity; Color SA Amino Silane ATH, MDH Polyamides; Epoxy; Polyolefins Low temperature properties; FR SV Proprietary MDH only Polyolefins FR (lower smoke, higher limiting oxygen index) SL Stearate ATH only Polyolefins Low viscosity; Improved dispersion SE Epoxy Silane ATH only Epoxy Improved dispersion; Higher loadings and strength SC Methacryl Functional ATH only Acrylics; Polyester Resistance to stress whitening ST Stearate / HST Stearate ATH, MDH Polyolefins; PVC Processability; Improved dispersion Hyflex Ether Silane ATH, MDH Epoxy; Urethane; Polyester Low viscosity; Improved dispersion The selection of a specific surface-treated or untreated ATH or MDH grade is based on the chemical properties of the polymer system. Huber s technical staff is ready to assist customers in identifying or customizing the best ATH and MDH product for your application. Huber has created a brochure that details the benefits of using surface-modified grades. Request your copy today by contacting us at -866-JMHUBER (-866-564-837) or visiting hubermaterials.com/nofire. 6
kemgard.com Kemgard flame retardants and smoke suppressants chemically influence the formation of organic char, effectively insulating the polymer from the heat and oxygen source thereby lowering heat and smoke release. Kemgard grades are manufactured by patented processes in which molybdates are precipitated on an inert core. This coated core approach makes more efficient use of the molybdate species by maximizing the active surface area, and at a much lower cost than pure molybdate chemicals, such as ammonium octamolybdate (AOM). Kemgard Lowers Smoke by Char Formation Char Formation Kemgard 9C Char Formation AOM Source: NBS Smoke Samples Compounds contained 60 phr ATH; 3 phr Sb O 3; 7 phr stabilizer; 0 phr Solutia 48; 0 phr FRP-45; and 0 phr smoke suppressant. Huber s Key Kemgard Product Offerings Kemgard (White Powder Appearance) Specific Gravity Kemgard 45.6 3 Calcium molybdate zinc complex Flexible PVC; Calendered film; Caulks, adhesives & sealants; Wallpaper Kemgard 50 3.7.9 Calcium molybdate complex Flexible PVC; Rigid PVC; Wire & cable; Calendered film; Caulks, adhesives & sealants; Epoxy; Wallpaper Kemgard 9A.7 3 Calcium molybdate zinc complex Flexible PVC; Calendered film; Caulks, adhesives & sealants; Wallpaper Kemgard 9B.3 5. Basic zinc molybdate compound Flexible PVC; Wire & cable; Calendered film; Caulks, adhesives & sealants; Epoxy; Wallpaper Kemgard 9C 3.3.8 Zinc molybdate / Magnesium silicate complex Flexible PVC; Rigid PVC; Wire & cable; Carpet backing; Polyamide; Calendered film; Caulks, adhesives & sealants; Epoxy; Polyolefins; Electrical connectors; Wallpaper; Neoprene rubber; Vinyl plastisol Kemgard 98 4.4 4. Basic zinc phosphate complex Flexible PVC; Polyamide; Calendered film; Caulks, adhesives & sealants; Polyolefins; Electrical connectors; Polyester Kemgard 00 Zinc molybdate / Magnesium silicate complex Flexible PVC; Rigid PVC; Wire & cable; Polyamide; Calendered film; Epoxy; Electrical connectors Kemgard HPSS 3.5 Basic zinc molybdate / Magnesium hydroxide complex Flexible PVC; Wire & cable; Carpet backing; Epoxy; Vinyl plastisol Kemgard MZM.6 Zinc molybdate / Magnesium hydroxide complex Flexible PVC; Rigid PVC; Wire & cable; Polyamide; Calendered film; Caulks, adhesives & sealants; Epoxy; Polyolefins; Polyester Kemgard 700Z.5 3 Zinc molybdate / Zinc borate complex Polyolefins; PVC; Polyamide 7
Huber s Fire Retardant Additives Manufacturing and Technical Operations Marblehead, Illinois Fairmount, Georgia Bauxite, Arkansas Kennesaw, Georgia Manufacturing Facility Manufacturing Facility and Technical Center Superior Technical Service Expertise Huber s unsurpassed technical expertise is its foundation in developing innovative fire retardant additives that meet the exacting requirements for each application. In addition, at our modern technical center in Fairmount, Georgia (U.S.), scientists work directly with customers in conducting extensive testing to replicate application situations and problems so tailored solutions are developed. Fire Testing Capabilities ASTM E354: Cone Calorimeter ASTM D7309: Microscale Combustion Calorimeter ASTM E66: NBS Smoke Chamber ASTM E6: Vertical Radiant Panel ASTM D3806: Two-Foot Tunnel ASTM D863: Limiting Oxygen Index UL 94: Horizontal and Vertical Burn Tests Technical Information Available Huber has additional technical information available specific to each of the products we ve discussed in this brochure. This information can be accessed by visiting our website, www.hubermaterials.com/nofire and clicking on our Product Finder. You can also contact us, and we ll be happy to provide you with the product information you are seeking. Let Us Go To Work For You: Contact Us Today Call: 866-JMHUBER (866-564-837) Click: hubermaterials.com/nofire Email: hubermaterials@huber.com Huber Engineered Materials expresses its thanks to Allied Moulded, Inc.; Fibergrate Composite Structures Inc.; Mar-Bal Incorporated; Dow Chemical; and GAF Materials Corporation for photographic assistance. THERE ARE NO IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Refer to Huber s Standard Conditions of Sale for the only express warranties applicable to the Huber products. incorporating Huber products are not warranted by Huber. In no event is Huber liable for consequential damages. Hydral is used, applied for, or registered as a trademark of Huber Specialty Hydrates, LLC for alumina trihydrate in various countries around the world. Hymod and Micral are used, applied for, or registered as trademarks of the J.M. Huber Corporation for alumina trihydrate in various countries around the world. Kemgard is used, applied for, or registered as a trademark of the J.M. Huber Corporation for flame retardants and smoke suppressants in various countries around the world. MoldX is used, applied for, or registered as a trademark of the J.M. Huber Corporation for optimized alumina trihydrate in various countries around the world. SpaceRite is a registered trademark of Huber Specialty Hydrates, LLC for alumina trihydrate. Vertex is used, applied for, or registered as a trademark of the J.M. Huber Corporation for magnesium hydroxide in various countries around the world. Zerogen is used, applied for, or registered as a trademark of the J.M. Huber Corporation for mineral flame retardants in various countries around the world. 04 J.M. Huber Corporation FireRetardantAdditives/Capabilities/RevVIII/Oct04