DYLARK
FAQ's
FREQUENTLY ASKED QUESTIONS
In cases where heat resistance is critical, it also replaces ABS and HIPS-type materials. The primary application is for instrument panel uppers and lowers. Other applications include floor console structures, overhead TV/HVAC supports, defroster closeouts, defroster ducts, console bins, structural brackets, backward incline fans and audio components.
outstanding dimensional stability and performance
consistent property performance over temperature service range
superior LTHA properties for performance and quality over the life of the vehicle
exceptional stiffness properties for improved NVH performance
good chemical resistance to most commonly used oils/lubricants
excellent processing, improved flow and thin wall designs allow for faster overall cycles
high stiffness - can perform 200% higher then competitive resins
thin-wall design
reduction of steel use
integration ability
ease of processing
consistent property profile
Q: What are DYLARK engineering resins?
A: DYLARK resins are styrene and maleic anhydride (S/MA) copolymers - often modified with tougheners (rubber) and fillers (glass, mica, etc.) in final form.
Q: Which materials can DYLARK replace and in what type of applications?
A: DYLARK successfully replaces polycarbonate, PC/ABS, PPO,
PPE, Nylon, PPGF and other copolymers. In cases where heat resistance is critical, it also replaces ABS and HIPS-type materials. The primary application is for instrument panel uppers and lowers. Other applications include floor console structures, overhead TV/HVAC supports, defroster closeouts, defroster ducts, console bins, structural brackets, backward incline fans and audio components.
Q: What are some of the key benefits of DYLARK resins?
A: DYLARK resin is an industry leader for foam adhesion properties. Beyond its superior performance record for adhesion warranty issues in automotive applications, DYLARK resins is known for its:
Q:How can DYLARK resins provide a lower cost advantage for my application?
A: A key factor when evaluating new designs is the systems cost. DYLARK resins display several performance characteristic that provide a cost advantage, such as:
In addition, when evaluating the total system, it is not uncommon during validation to achieve a reduction of 20-25% in part weight and reduced costs.
Q: Do DYLARK resins require drying or special equipment to process?
A: DYLARK resins typically do not require drying prior to molding. The resins are also generally easier to process than competitive resins, such as polycarbonate, PC/ABS and PPO blends and alloys, and can be molded on all types of injection equipment with standard screw and barrel designs.
Q: Are DYLARK resins recyclable?
A: Yes, DYLARK resins as pre-consumer materials (regrind) can be utilized back into the original application at levels up to 20%. Studies have concluded that post-consumer instrument panels using DYLARK resins after 10 years of service retained 97% of the physical property values.
Q: Can DYLARK resins be used in color-required applications?
A: DYLARK resins are available in clear, unfilled and glass-reinforced grades ranging from 12-40%. The impact-modified grades are generally available in natural color and the glass-reinforced grades are available in black. DYLARK resin applications can be colored using a concentrate with a polystyrene or S/MA based carrier.
Q: Can DYLARK resins be used in painted applications?
A: DYLARK resins are in applications ranging from defroster closeouts to brow-filler applications that utilize painted surfaces. DYLARK resins utilize solvent-based, water-based and soft-touch systems with a one-coat application.
Q: What type of secondary operations can be used with DYLARK resins?
A: Most instrument panels have secondary operations in removing substrate/foam & skin. The most common method is water jet cut or die punch. Following proper design guidelines for these processes and others, including high-speed milling, vibration and sonic welding, laser cutting & scoring, adhesive bonding, heat staking and stapling, provide the versatility required for a variety applications.
Q: What processing options are available with the use of DYLARK resins?
A: Most applications that utilize DYLARK resins are injection molded. However, other molding techniques, such as extrusion, gas assist, blow molding, two-shot and thermoforming, are used.
Q: Does NOVA Chemicals provide any support or services for DYLARK resins?
A: As a leading resin supplier for automotive applications, NOVA Chemicals has expertise in mold filling and structural analysis, engineering, design, and data acquisition. Along with this general service, we also offer cooling analysis, NVH and structural analysis, data acquisition and design assistance.
Q: Where are DYLARK resins available?
A: DYLARK resins may be purchased directly through NOVA Chemicals. They are also available in Europe and Asia.
