Vandar® Thermoplastic polyester blends

Processing:
Vandar is supplied in plastic or multiwall bags. Before processing, the material should be dried to achieve optimum moulded-part properties. The moisture content of virgin material and regrind to be processed should not exceed 0.02%. Higher moisture contents lead to hydrolytic degradation of the melt and to a deterioration in the mechanical properties, particularly toughness, of the moldings. The processing machine feed hopper should be closed during the processing operation; heating the hopper can be an advantage.

Structure
Vandar is a series of extremely impact-resistant thermoplastic polyester blends. Despite modification the rigidity even of the unreinforced types is relatively high. For applications demanding greater rigidity the best suited type of glass-fiber reinforcement or other techniques are used.

Properties
The semi-crystalline, impact-resistant modified polyester blends are characterized by the following qulities:

• high impact and notched impact resistance, also at low temperatures
• high heat resistance, especially in the glass-fibre reinforced grades (operating temperature up to 120°C)
• high resistance against organical solvents, fuels, lubricants and brake fluids
• high abrasion resistance
• good processability
• paintability

Main Advantages of Vandar compared to

polycarbonate:
Vandar offers greater resistance to solvents, which is of great importance in the area of molded parts that are exposed to fuels or cleaning agents.

high-impact resistant polyamide:
Vandar has a higher dimensional stability owing to its low moisture absorption. This means that break stress, break elongation, module of elasticity and impact resistance remain practically uneffected.

Grades
Ticona offers a comprehensive Vandar assortment: Besides unreinforced and glass-fiber reinforced grades there are others equipped with flame retardation or special grades for the manufacture of airbag covers.

Applications
Vandar is applied exclusively for injection-molding procedures. Airbag covers made of Vandar are part of the standard safety equipment in today’s automobile. The good impact-resistance, also at low temperatures, is of use for further applications: Ski bindings, farming machine parts, suitcase shells, transporting boxes.

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