Agriculture Reference
In-Depth Information
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Ease of processing and fabrication
• Easytocolour
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High impact-resistant
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High degree of toughness and rigidity
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Good electrical properties
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Excellent adhesion to metal coatings
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Fairly good weather resistance
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High gloss finishes
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Good chemical resistance
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Light weight
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Very low moisture absorption (post moulding)
4.7 Polymer Additives
For efficient processing of polymers, using additives with basic resins is essential.
Additives are available in a very wide range and forms such as liquids, pastes and
solids. These are needed (in addition to aid ease of processing) to enhance the
properties of a product and achieve the desired finishes. The list below shows the
general additives used in the plastic processing industry but, with PCRH, additional
special additives are required to achieve the special properties or finishes desired. For
example, in the extrusion of lumber using PCRH, special additives can be incorporated
in addition to the standard ones to achieve veneers similar to those of natural wood:
• Anti-blockingagents
• Slipadditives
• Plasticisers
• Stabilisers
• Antioxidants
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