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Product Spotlight

Silicone adhesive for plastic oil pans
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Rubber World's Product News Online

Equipment | Materials | Instruments | Hardware/Software | Services

Polymer modification
Performance chemistries for plastic and fiber formulations include Elastamine and Jeffamine polyetheramines. These can be used to improve mechanical properties and low temperature characteristics like the elasticity and flexibility of thermoplastics, including polyamides, polyesters, polyolefins and polyimides. They can also be used to enhance the hydrophilicity, surface energy and polarity of plastics and fibers for improved static dissipation, dyeability/paintability and interpolymer adhesion. From a pigments and additives perspective, the company produces a broad range of specialty pigments, additives, fillers and extenders with diverse functions to meet the needs of the plastics industry, including Sachtleben and Tioxide pigments.


Post date: 6/29/2015

Engineering thermoplastic
Arlon 3000 XT engineering thermoplastic was developed in partnership with Evonik Industries to deliver enhanced performance in extreme high-temperature environments, such as fire seals. The technology is based on Evonik's Vestakeep PEEK polymer platform, which is said to be particularly suitable for applications that must meet extremely high mechanical, thermal and chemical requirements. As a result of the collaborative partnership between the companies, a new industry standard for thermoplastics performance is said to have been set. Material issues that can result from demanding, high-temperature aerospace applications can be minimized through the use of Arlon 3000 XT, which features enhanced performance and superior mechanical property retention at 350F (177C) to 600F (316C).

Greene, Tweed

Post date: 6/29/2015

Pelletized zinc oxide
Pelletized zinc oxide Pelletized zinc oxide products are offered in six grades. Each is formulated for specific applications. The product is manufactured using the company's high-efficiency drum style pelletizer. Pellet size and density can be precisely controlled to match individual needs. Pellets are freer flowing, allowing faster processing times and less dusting versus powdered zinc oxide, according to the company. Pellet production capacity at the firm is in the 30 million range per year. Samples and production volumes of zinc oxide are available. Because of the drum style production method with multiple screens, additional binding agents or pinch rollers are not required, according to the company. The pellet form is said to be preferred in the rubber, tire, glass and chemical markets. The firm offers zinc oxide grades for the rubber, tire, chemical, oil additives, electronics, plastics, paint and coatings, tape and adhesives and other markets.

Zinc Oxide LLC

Post date: 6/29/2015

Polyethersulfone grade
Veradel 3300 SL 30 polyethersulfone is said to be a tough, high-performance resin designed to meet the growing global demand for advanced polymers that can improve automotive powertrain efficiency and reduce carbon emissions. Formulated to replace metal in automotive applications prone to friction and wear, such as oil pumps and exhaust gas recirculation systems, the material is said to offer wear resistance and low coefficent of friction in both dry and lubricated environments. An injection moldable material, Veradel 3300 SL 30 PESU is formulated with a ternary anti-friction/anti-wear additive system comprised of carbon fiber, graphite and polytetrafluoroethylene.

Solvay Specialty Polymers

Post date: 6/29/2015

Antioxidant additive
Paratherm AP (antioxidant protection) additive is designed to be added to operating hot oil systems to extend the oil's useful life. Acids are said to be the cause of the most common hot oil system problem, namely sludge. When expansion tanks are installed and operated properly, the oil stays cool and acid formation is very slow. However, some expansion tanks are not installed properly. Sometimes the expansion line is insulated or is less than 4' long. Warm-up valves are left open or sunlight hits a tank that is painted a dark color. These can cause the tank to run hot enough to form acids when the oil reacts with oxygen. And once the acid number reaches 0.3-0.4, carbon starts to form. Paratherm AP additive is said to interrupt this sequence.


Post date: 6/29/2015

Bio-based EPDM for seals
Keltan Eco EPDM rubber is used by a global manufacturer of seals and vibration control technology products. Keltan Eco EPDM (ethylene-propylene-diene monomer) rubber contains up to 70% of ethylene obtained from sugarcane, and is said to have an impressive set of properties that is in no way inferior to that of conventional EPDM. The bio-renewable rubber compound is said to address the constantly increasing standards on CO2 footprint reduction, especially in the automotive industry, and the overall global pull for more sustainable industrial solutions. Applications for the rubber compound based on Keltan Eco polymers include seals for coolants, steam, synthetic hydraulic fluids, brake fluids and aerospace hydraulic fluids. The material is capable of withstanding temperatures up to 150C, and the material is said to have outstanding compressive stress force retention.


Post date: 6/29/2015

Silicone adhesive for plastic oil pans
Silicone adhesive for plastic oil pans A silicone adhesive sealant has been developed for mounting vehicle oil pans. Sold under the name Elastosil RT 779, the product adheres to both aluminum and polyamide. Plastic oil pans can now be mounted without mechanical fasteners. Elastosil RT 779 is said to possess good sealing properties and is highly resistant to oil, heat and dynamic loads. The adhesive can be applied by machine and rapidly cures at room temperature. Elastosil RT 779 is an advance on Elastosil 76540, a silicone adhesive which was previously used for bonding both polyamide and aluminum oil pans. Elastosil RT 779 is said to outscore its predecessor in terms of processing properties, storage stability and resistance to hot engine oil under dynamic loads. This self-adhesive, condensation-curing two-part silicone rubber boasts a balanced range of rheological properties. It has a high green strength, but thins enough under shear to enable it to be readily processed on two-component mixing and metering equipment. Elastosil RT 779 also cures rapidly. Even if the container has been in protracted storage, the pot life is just five to ten minutes. Substantial improvements are also said to have been made to the storage stability of the curing agent component. The adhesive-sealant is said to provide very good long-term adhesion to aluminum and polyamide, without the need for priming. Just 20 minutes after mounting, the bond is said to be strong enough to allow further operations on the engine and oil pan. This is said to slash cycle times in the production process. When fully cured, the adhesive has a bond strength far in excess of 0.25 megapascals. It is said to exceed all relevant manufacturing specifications.

Post date: 6/29/2015

Silicone encapsulant
Silicone encapsulant EI-1184 clear encapsulant is offered for demanding outdoor LED lighting applications. Featuring high transparency and weatherability, the two-part silicone encapsulant is said to deliver reliable, long-lasting protection of sensitive LED electronics in environments containing moisture, ultraviolet light, thermal cycling and extreme temperatures for both indoor and outdoor lamp and luminaire applications. As a class of materials, the firm's silicones are said to deliver greater flexibility compared to other encapsulant chemistries to counter mechanical strains of thermal cycling.

Post date: 6/29/2015

Liquid silicone seals
The lotus effect, also known as superhydrophobicity, is a term that refers to extremely water-repellant and self-cleaning properties in leaves and plants. This company is said to have succeeded in mirroring these characteristics to its seals without changing the sealing material or coating the seal. The key is said to be the manufacturing tool, which leaves tiny protrusions on the surface of the seal, invisible to the naked eye, which are measured in microns and modeled after the surface of a lotus flower. This structure resists not only water, but even a more viscous substance like honey simply drips off the seal's velvet-like surface. The purely geometric modification of the surface is said to have attracted attention from the food and beverage industry. Liquid silicones are said to be well-suited for the industry and for contact with drinking water, particularly for sterilization solutions.

Post date: 6/29/2015

Non-tin RTV product
SS-333 is a non-tin RTV which was developed to address the concerns of the toxicity of tin catalyst and the new regulations in Europe. These regulations are expected to ultimately expand in North America. In a pre-emptive move, the company has already addressed it. SS-333 contains no tin, heavy metals or catalysts. As a general purpose adhesive sealant, it bonds to all substrates except polyethylene, polypropylene and Teflon. In addition to general industry fabrication applications, it is expected to find utility in marine and catalyst sensitive applications. It also offers a standard non-corrosive moisture cure schedule in a non-tin RTV with a two-year plus shelf life. Custom formulations are also available.

Post date: 6/29/2015

Needle-bonding adhesive
The company's 1405-M-UR-SC medical device adhesive is LED curable, facilitating fast cures at both 385 and 405 nm wavelengths. The adhesive has a low viscosity of 150 cP, which is said to make it ideal for tight-tolerance needle-bonding applications. The 1405-M-UR-SC product is formulated with Encompass technology, which incorporates the company's exclusive See-Cure color change and Ultra-Red fluorescing technologies with LED-curing capabilities into one product. Manufacturers are said to thus gain efficiencies.

Post date: 6/29/2015

RTV elastomer series
RTV elastomer series Select-Skin RTV elastomers are offered for applications requiring a skin-like material with tough performance properties. Select-Skin RTV elastomers are comprised of two series, including the super soft SES22330 (1:1 ratio) and the tough skin SES22230 (10:1 ratio). Both series are two-component, heat-cured and addition-cure type silicone rubber compounds featuring low hardness, high tear strength, low viscosity, high elongation and low tackiness. Each series is said to offer three durometer 00 hardness options, including the super soft SES22330 (10, 20 and 30) and the tough skin SES22230 (45, 55 and 65). Although all of the products are said to be extraordinarily soft, they have a skin-like feel that is dry and not oily.

Post date: 6/29/2015

Medical polymer solutions
Technologies including breathable polymers for wound care, flame retardant thermoplastic polyurethanes (TPUs) for medical devices, medical-grade TPUs for intravenous (UV) tubing and soft polymers as a replacement for silicones and rubber are offered by the company. Tecothane TPUs are said to represent the first medical-grade TPUs that also offer flame-retardant properties. Pellethane aromatic TPUs are offered for use in flexible IV set tubing applications. Pellethane 2683-80AE is said to deliver a highly favorable cost-performance balance, excellent biocompatibility, kink resistance and ease of processing.

Post date: 6/29/2015

Advanced silicone elastomer products
Advanced silicone elastomer products In addition to offering a low-volatile, self-lubricating liquid silicone rubber (LSR), the company has made recent advancements in fiber-reinforced LSR and anti-static heat cured rubber (HCR) materials within its families of Silopren and Silplus elastomers. Silopren LSR 3376/50 features very low volatile levels without post-curing. It is engineered to help automotive manufacturers produce electrical connector seals that meet increasingly stringent safety specifications. Silopren LSR 3376/50 is the first product in the firm's low-volatile, self-lubricating LSR family. It has 3% oil content and contains less than 350 ppm of total volatiles. The material typically has a nominal hardness of 50 durometer A, a low compression set of 16%, and it can be easily colored. The low-volatile product was developed to meet stringent global automotive specifications, according to the company. Applications requiring the features of silicone rubber and the strength of fiber reinforcement, such as wrist bands for wearable electronic devices, can obtain this combination of mechanical properties by utilizing the company's Silopren Matrix 70 fiber-reinforced LSR. Compared to standard LSR of the same hardness, fiber-reinforced LSR has demonstrated 30% higher torsion resistance and 100% higher modulus. These properties may save manufacturers the cost of incorporating a fabric layer into their products. Silopren Matrix LSR is said to exhibit excellent UV resistance and can be easily colored. Manufacturers using materials that employ carbon black fillers to remove static charge face obvious limits on color or translucence for their end products. Silplus 30 AS anti-static silicone rubber is said to overcome such limitations.

Post date: 6/29/2015

Closed cell silicone sponge
Closed cell silicone sponge This designer, developer and manufacturer of extruded silicone, closed-cell silicone sponge sheeting and molded rubber products, including specialty rubber compounds, has introduced Bellofoam, a proprietary, closed-cell silicone sponge sheeting designed to support a variety of industrial, manufacturing, gasketing, insulation, sealing and padding requirements in automotive, aerospace, factory floor, industrial, medical and pharmaceutical industries. Offered in a variety of densities, thicknesses and pigment matched colors, Bellofoam is produced in bun form. The bun provides the core from which sheets are skived horizontally, allowing the manufacturer to offer a product with higher consistency and 25% less weight than other closed cell silicone sponge sheeting available on the market. This method also allows the company to produce up to 2.000" thick sheets, depending upon customer requirements.

Bellofram Silicones

Post date: 6/29/2015

Medical device materials
Polycarbonate, ABS and styrenic custom compounded resins are provided by this company to the medical devices market. The firm is said to differentiate itself with superior product quality while leveraging global resin sources to provide equivalent products worldwide with consistency and assurance of supply. The company supports OEMs and designers with Calibre polycarbonate resins, Calibre Megarad polycarbonate resins, Emerge advanced resins and Magnum ABS resins. The company is said to have strengthened its materials portfolio with medical grades featuring more robust chemical resistance, glass fillers, color compensation technology and biocompatibility. Its portfolio also features ABS resins produced under a mass polymerization process said to offer superior lot-to-lot consistency and whiteness of color.


Post date: 6/29/2015

Silicone injection molding
Liquid injection molding services for prototype and low volume production purposes are provided by the company. The addition of this product offering is said to enhance the company's capabilities in the silicone prototype and production molding markets. The firm has recently acquisitioned several injection molding presses for its operation. All of the presses purchased are suited for small, medium and micro sized parts. The company is able to manufacture complex injection mold tools within 15 to 25 business days, which is said to allow it to remain highly competitive in the silicone molding market. The addition of silicone injection molding is said to provide the company with significant expansion in capability in low-volume production molding.

Albright Technologies

Post date: 6/29/2015

Injection molding silicone
KEG-2000 series liquid injection molding silicone (LIMS) products are supplied in two components which are mixed in a 1:1 ratio to ensure easy and accurate blending with optimized physical and processing properties. Said to offer dynamic viscosity, KEG-2000 products are said to exhibit higher viscosity under low shear stress (pumping and shut-off) and lower viscosity under high shear stress (injection). Customers are said to benefit from faster mold filling and minimal flash. The KEG-2000 series is said to be engineered for outstanding performance in cold-runner systems with both open- and closed-nozzle configurations. ()

Shin-Etsu Silicones of America

Post date: 6/29/2015

Silicone adhesive gel
A high-tack silicone adhesive gel was developed expressly for medical applications. Silpuran 2117 is said to be especially well-suited for skin-friendly adhesive applications such as those found in advanced wound care. Dressings using the high purity silicone adhesive gel remain reliable and durable, yet stay soft and flexible, thus enabling atraumatic dressing changes. Silpuran 2117 was developed and formulated to provide advantageous properties such as enhanced tack in direct skin applications and where hypo-allergenic skin adhesion is a crucial requirement. Dressings made using this soft silicone gel are breathable due to high vapor permeability of the silicone, protect the wound site from bacteria, are waterproof and help promote an optimized healing environment. The gentle properties of Silpuran 2117 silicone adhesive gel are said to enable easy removal without causing damage or pain to the surrounding skin area.

Wacker Chemie AG

Post date: 6/29/2015

Flexible silicone grout
SS-777 is a flexible grout that is said to be great for expansion joints, vibrating or moving surfaces like subway or rail stations, plastic tubs or shower bases. It also compensates for thermal gradients in hot tubs, steam rooms and spas. It is said to bond well to all construction surfaces, including wood and concrete. Additionally, it does not crack, chip or break, while offering great adhesion, according to the manufacturer. In addition to the firm's standard products, it continues to offer custom formulation, unique packaging and consulting to meet all silicone needs.

Silicone Solutions

Post date: 6/29/2015

Thermally conductive silicone gap filler
Thermally conductive silicone gap filler TC-4525 thermally conductive gap filler is said to meet the fast-growing global demand for improved processability and thermal management in automotive electronics applications. This high-performing silicone technology is said to deliver thermal conductivity of 2.5 W/m.k, greatly improved dispensability, significantly reduced abrasiveness and stable performance for more reliable electronics in harsh automotive underhood environments. TC-4525 thermally conductive gap filler is a soft, compressible, two-part silicone that can be dispensed directly from its original packaging with minimal to no additional process preparation. It is well-suited for automated dispensing using standard meter mix equipment. The material's excellent thixotropic properties enable it to dispense easily, avoid slumping on vertical surfaces during assembly, and, after cure, maintain its vertical stability even after long use, according to the company. This advanced product platform includes an optional formulation that incorporates glass beads to control bond line thickness during assembly. Precise formulation of the thermally conductive filler enables this material to deliver much lower abrasiveness to lower friction and help reduce maintenance. The platinum cure system of the company's new gap filler is said to enable fast, controlled cure at room temperature, although cure times can be accelerated further with heat to reduce manufacuring cycle times, according to the manufacturer. It requires no post-cure steps, withstands peak exposure at 200C and performs reliably at operating temperatures up to 150C. The company also offers a full line of high-performance thermally conductive adhesives, encapsulants, compounds and gels to meet critical industry needs.

Dow Corning

Post date: 6/26/2015

Specialty chemicals
A newly revised product guide highlights this developer and supplier of innovative polymers, including synthetic elastomers and specialty chemicals. The firm integrated six product grade additions and over 20 updates to the product guide. Along with specific grade updates and information on 176 elastomer products, the latest version offers an updated Nipol nitrile elastomers Mooney viscosity vs. percent ACN chart and additional worldwide contact information. Information is provided on the following products: Nipol nitrile elastomers; Nipol carboxylated nitrile elastomers; Nipol terpolymer elastomers; Nipol liquid nitrile elastomers; Nipol nitrile powder and crumb elastomers; Zealloy modifiers for thermoplastics; DuoMod tougheners; Nipol and Sivic polyblends and oil-extended nitrile elastomers; Chemisat HNBR latex; Zetpol hydrogenated nitrile elastomers; Zetpol HP HNBR; Zetpol EP HNBR; Zetpol ZLX HNBR latex; Zeoforte modified hydrogenated nitrile elastomers; HyTemp polyacrylate elastomers; HyTemp high-performance polyacrylate elastomers; HyTemp polyacrylate curatives and additives; Hydrin polyepichlorohydrin elastomers, and more.

Zeon Chemicals L.P.

Post date: 5/6/2015


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