| About |
|---|
| Warning: The status of this material is ‘Commercial: Limited Issue’ The data for this material has not been recently verified. Please contact RTP Company for current information prior to specifying this grade.&& |
| Product Description | |
|---|---|
| Generic | Paraformaldehyde |
| Material Status | Commercial: Negative |
| Features | Homopolymer,HB |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.60 | g/cm³ | ASTM D792 |
| Shrinkage rate | |||
| MD: 3.2 mm, injection molded | 1.5 | % | ASTM D955 |
| Water absorption rate | |||
| 23℃，24hr | 0.20 | % | ASTM D570 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Tensile modulus | |||
| injection molding | 3450 | MPa | ASTM D638 |
| tensile strength | 34.0 | MPa | ASTM D638 |
| Tensile strain | |||
| Yield, injection molding | 9.0 | % | ASTM D638 |
| Bending modulus | |||
| injection molding | 3450 | MPa | ASTM D790 |
| bending strength | |||
| injection molding | 69.0 | MPa | ASTM D790 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | |||
| 3.2mm, injection molded | 37 | J/m | ASTM D256 |
| Notched impact strength of cantilever beam | |||
| 3.2 mm | 270 | J/m | ASTM D4812 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | ASTM D648 | ||
| 0.45 MPa, unannealed, injection molded | 163 | ℃ | ASTM D648 |
| 1.8 MPa, unannealed, injection molded | 118 | ℃ | ASTM D648 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Volume resistivity | 1.0E+14 | ohms·cm | ASTM D257 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Flame retardant level | |||
| 1.50 mm | HB | UL 94 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Barrel rear temperature | 177 to 210 | °C | |
| Barrel middle temperature | 177 to 210 | °C | |
| Barrel front temperature | 177 to 210 | °C | |
| Mold temperature | 79 to 107 | °C | |
| Injection pressure | 69.0 to 103 | MPa | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
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