Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Plastics & Elastomers Functions
- Hs Code
- 39 0461 0000
- Structural Formula
- C2F4)n
- CAS No.
- 9002-84-0
- Technologies
Features & Benefits
- Materials Features
Applications & Uses
- Applications
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
- Main Applications
• for compression molding of big billets;
• further milling;
• fabricating the end products such as skived films, sheets, cylinders, gaskets, valve seats, seals, support
slide for heavy loads;
• preparing the pre-sintered material
- Process
PTFE is usually processed in two steps: preforming and sintering. The powder is first compacted into a preformed shape approximating that of the desired molding.
SINTERING The preformed PTFE powder is sintered under a temperature program generally containing 7 temperature steps including:1. heating,
2. dwell before melting,
3. complete melting of a billet,
4. dwell above melting point,5. cooling to crystallization point,
6. crystallization of the melt of PTFE,
7. final cooling.Annealing steps are also required for bigger billets sintering in order to reduce article distortion
Properties
- Appearance
- White, easily lumping powder, without visible inclusions
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Bulk Density | 560±35 | g/l | internal method1 |
| Density (SSG) | 2.15 - 2.18 | g/cm³ | Internal Method1 |
| Dielectric Strength (0.100+0.005 Mm Thickness) At Constant Voltage At Min | 80 | kV/mm | internal method1 |
| Elongation At Break (Min) | 350 | % | internal method1 |
| Melting Point | 327±5 | °C | internal method1 |
| Mould Shrinkage | 1,8-2,8 | % | internal method1 |
| Particle Size, Average Diameter (D50) | 90±25 | μm | Laser-diffraction analyses |
| Tensile Strength At Break(Min) | 29 | MPa | internal method1 |
| Water Content | max.0,04 | % wt | (internal method1) |
Regulatory & Compliance
- Certifications & Compliance
Technical Details & Test Data
- Quality
Fluoroplast-4PN90 can be classified as type II, ASTM D 4894 standard. Typical properties are not suitable for specification purposes. For the detailed specification please contact the commercial department. HaloPolymer does not use PFOA/APFO or its salts/LCPFAC in the process of polymerization of TFE.
HaloPolymer PTFE is compliant with RoHS Directive 2011/65/EU
FDA 21 CFR 177.1380 & FDA 21 CFR 177.1550
Class VI acc. USP 35 <88>
3-A Sanitary Standard for Multiple-Use Plastic Materials 20-27
Safety & Health
- Safety precautions
24 months from the date of manufacture.
Packaging & Availability
- Packaging Type
- Packaging
25 kg (net) card boxes with 2×12,5 kg polyethylene inserts on wooden pallet
boards. 30 boxes on one pallet. Gross weight per pallet is 860 kg.
Storage & Handling
- Storage life
24 months from the date of manufacture.
- Storage & Handling
Storage and handling preforming is the easiest when the resin is uniformly between 21–27°C (70–80°F). As the temperature declines below this range, the resin will be increasingly difficult to mold without cracks and problems with condensed moisture. Higher temperatures inhibit flow and promote lumping.
Storage conditions should be set accordingly.
F-4PN90 tends to form agglomerates easily; therefore, do not store large quantities of powder in deep containers; avoid strong vibrations. Storage at temperatures above 19°C tends to promote agglomerate formation. Should agglomerates form, keep the powder at less than 19°C (ideally 15°C or below) for two days then sift through a coarse screen and allow to come to room temperature before molding.- Storage life
WARNING! VAPORS CAN BE LIBERATED THAT MAYBE HAZARDOUS IF INHALED.
Before using Halopolymer Fluoroplast-4 (PTFE) read the Material Safety Data Sheet. Open and use containers only in well-ventilated areas using local exhaust ventilation. Vapors and fumes liberated during hot processing or from smoking tobacco or cigarettes contaminated with Halopolymer Fluoroplast may cause flu-like symptoms (chills, fever, sore throat) that may not occur until several hours after exposure and that typically pass within 24 hours. Vapors and fumes liberated during hot processing should be exhausted completely from the work area; contamination of tobacco with polymers should be avoided. Mixtures with some finely divided metals, such as magnesium or aluminum, can be flammable or explosive under some conditions.