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Terratek® SC SC65

1 of 39 products in this brand
Terratek® SC65 is a proprietary blend of wheat starch and polypropylene for injection molding applications. SC 65 contains 65% wheat starch by weight; however, a range of properties can be achieved by altering the starch to plastic ratio and by the inclusion or admission of other additives. Formulations containing anywhere from 30% to 65% starch are available upon request

Polymer Name: TPS/PP Alloy

Labeling Claims: Bio-based, Biodegradable, Environmentally Friendly, From Renewable Resources, Sustainable

Processing Methods: Extrusion, Injection Molding, Profile Extrusion

Density: 1200.0 - 1200.0 kg/m³

Tensile Strength: 25.9753 - 25.9753 MPa, 26.013 - 26.013 MPa

Technical Data Sheet
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Identification & Functionality

Polymer Name
Plastics & Elastomers Functions
Technologies

Features & Benefits

Applications & Uses

Plastics & Elastomers Processing Methods
General Processing Recommendations

Due to the hydroscopic nature of the natural fillers in this material, pre-drying the resin may be required. Green Dot recommends that the moisture level of the resin not be above 0.3% as measured by loss-in-weight at 300°F for 15 minutes. If the moisture is above the recommended level, the resin should be dried in a desiccant dryer at 150°F until the moisture is at or below the recommended level. Failure to dry the material can cause processing problems normally associated with moisture in plastics.

For best molding results, larger gates and runners are recommended. The injection pressure required to fill the mold is much higher than typical injection molding grade plastics.   Typical injection molding temperatures are listed below, these are a guide and may need to be changed based on the particular application :

Rear 350°F to 360°F
Middle 350°F to 360°F
Front 360°F to 375°F
Nozzle 360°F to 375°F
Mold 60°F to 170°F

The melt temperature of the resin should remain below 400°F to prevent the material from discoloring and having a burnt odor.  

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Specific Gravity1.2ASTM D792
Shrinkage0.011in/in
Melt Index (230°C, 2.16kg)10g/10 minASTM D1238
Tensile Strength3770psiASTM D638
Tensile Modulus375826psiASTM D638
Flex Strength7893psiASTM D790
Flex Modulus400000psiASTM D790
Elongation2.17%
Notched Izod0.3ft lb/inASTM D256

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Packaging Type
Packaging

Terratek® SC65 resin is typically packaged in a sealed plastic-lined Gaylord at 1200 lbs/Gaylord.

Storage & Handling

Storing

The product should be stored in a cool, dry, and sanitary area to achieve maximum stability.