TPX™ RT18 (RT18XB) by Mitsui Chemicals is a high modulus, low density, heat resistant polymethylpentene. It boasts superior releasability and is one of the lightest polymer materials among thermoplastic plastics. Possesses excellent transparency equivalent to glass and acrylic as well as high melting point and can be used at high temperature. Offers excellent chemical & steam resistance and high durability against acid, alkali and alcohol. Recommended for injection molding and is also applicable for extrusion processing by T-Die casting, profile, mandrel, pipe and fiber spinning. Exhibits gas permeability, low refractive index, low dielectric property and high insulation properties equivalent to fluororesin. Possible applications include food containers, release film for FPC, rubber hoses and release paper for synthetic leather. It is also suitable for animal cage, resin modification, LED mold, experimental apparatuses and hollow fiber. TPX™ RT18 (RT18XB) is certified for food packaging materials by Japan Hygienic Olefin and Styrene Plastics Association, United States Code of Federal Regulations Title 21 and EU Regulation (EU) 10/2011.
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Product Type:
| Appearance | Pellets |
Documents related to TPX™ RT18 (RT18XB)
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Benefits
Modulus, High|
Chemical resistance, High|
Durable|
Density, Low|
Transparency, High|
Mold Release, Good|
Gas Permeability, High|
Food contact approved|
Alcohol Resistant|
Heat Resistance, High|
Alkali Resistant|
Acid Resistant
Compliance
| Food Contact Approval | Yes |
| Certifications & Compliance | Japan Hygienic Olefin and Styrene Plastics Association, United States Code of Federal Regulations Title 21, EU Regulation (EU) 10/2011 |
Applications
Recommended markets
Applications
Conversion mode
Pipe Extrusion|
Profile Extrusion|
Injection Molding|
Fiber Extrusion|
Cast Film Extrusion|
Extrusion
Availability
Product Status:COMMERCIAL
TPX™ RT18 (RT18XB) properties
Electrical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Dielectric Breakdown Voltage | 30 kV/mm | Injection Molded Specimen, 2mm Thick | IEC 60243-1 |
| Dielectric Constant | 2.15 | 1MHz, Injection Molded Specimen, 2mm Thick | IEC 60250 |
| Volume Resistivity | > 1016 ohm-cm | Injection Molded Specimen, 2mm Thick | IEC 60093 |
Mechanical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Flexural Modulus | 1530 MPa | Cross Head Speed:1mm/min, 4mm Test Piece | ISO 178 |
| Flexural Strength | 37 MPa | Cross Head Speed:1mm/min, 4mm Test Piece | ISO 178 |
| Fractured Strain | 32 % | Cross Head Speed:50mm/min, 4mm Test Piece | ISO 527 |
| Fractured Strain | 67 % | Cross Head Speed:5mm/min, 4mm Test Piece | ISO 527 |
| Fractured Stress | 28 MPa | Cross Head Speed:50mm/min, 4mm Test Piece | ISO 527 |
| Fractured Stress | 15 MPa | Cross Head Speed:5mm/min, 4mm Test Piece | ISO 527 |
| Hardness, Rockwell | 80 | HRR Scale | ISO 2039 |
| Impact Strength, Notched Izod | 2 kJ/m² | Injection Molded Specimen, 4mm Test Piece, Part MCI Method | ISO 180 |
| Impact Strength, Unnotched Izod | 7 kJ/m² | Injection Molded Specimen, 4mm Test Piece, Part MCI Method | ISO 180 |
| Modulus of Elasticity | 1350 MPa | Cross Head Speed:2mm/min, 4mm Test Piece | ISO 527 |
Optical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Haze | 2.4 % | Light Source:D65, 2mm Thick Test Piece | ISO 14782 |
| Refractive Index | 1.462 | Light Source:D Line, 2mm Thick Test Piece | ISO 489 |
| Transmittance, Visible | 93 % | Light Source:D65, 2mm Thick Test Piece | ISO 14782 |
Other properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Tensile Strength at Yield | 23 MPa | Cross Head Speed:5mm/min, 4mm Test Piece | ISO 527 |
Physical properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| Density | 833 kg/m3 | Gradient Method, Pellets | MCI Method |
| Linear Mold Shrinkage | 1.6 % | Injection Molded Specimen, 2mm Thick, MD | MCI Method |
| Linear Mold Shrinkage | 1.3 % | Injection Molded Specimen, 2mm Thick, TD | MCI Method |
| Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index) | 26 g/10 min | At 260°C, 5kgf Applied Force, Pellets | MCI Method |
| Spiral Flow | 51 cm | At 310-320°C, Mold Temperature:73°C | MCI Method |
| Water Absorption | < 0.01 % | 1mm Thick Test Piece | ISO 62 |
Thermal properties
| Properties | Value & unit | Test condition | Test method |
|---|---|---|---|
| CTE, Linear | 1.31×10-4 1/°C | At -50-150°C, Heat Speed 5°C/min, 4mm Test Piece | ISO 11359-1 |
| Deflection Temperature at 0.46 MPa (66 psi) | 86 °C | Heat Speed: 120°C/hr, 4mm Test Piece | ISO 75 |
| Melting Point | 232 °C | DSC | MCI Method |
| Vicat Softening Temperature | 167 °C | Heat Speed: 50°C/hr, Applied Load: 10N, 4mm Test Piece | ISO 306 |