| HS Code | 289691 |
| Density Iso 1183 | 1.03 g/cm³ |
| Melting Temperature Dsc | 188 °C |
| Vicat Softening Temperature Iso 306 | 160 °C |
| Tensile Modulus Iso 527 1 2 | 450 MPa |
| Tensile Stress At Break Iso 527 1 2 | 42 MPa |
| Tensile Strain At Break Iso 527 1 2 | 320 % |
| Flexural Modulus Iso 178 | 410 MPa |
| Shore D Hardness Iso 868 | 64 |
| Charpy Notched Impact Strength At 23 C Iso 179 | No break |
| Water Absorption After 24h Iso 62 | 0.2 % |
| Water Absorption At Saturation Iso 62 | 1.0 % |
| Low Temperature Brittleness | -40 °C |
| Density | 1.02 g/cm³ |
| Melting Point | 189 °C |
| Glass Transition Temperature | 45 °C |
| Tensile Modulus | 420 MPa |
| Tensile Strength At Break | 34 MPa |
| Elongation At Break | 300 % |
| Flexural Modulus | 450 MPa |
| Notched Izod Impact At 23 C | 90 kJ/m² |
| Shore D Hardness | 60 |
| Water Absorption At Saturation | 1.2 % |
| Heat Deflection Temperature At 0 45 Mpa | 100 °C |
| Continuous Service Temperature | 100 °C |
As an accredited Arkema Rilsan BMN BLACK TLD PA11 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Arkema Rilsan BMN BLACK TLD PA11 is supplied as a black powder in sealed 20 kg bags, protected from moisture. |
| Container Loading (20′ FCL) | 20' FCL: Load Arkema Rilsan PA11 in dry, clean container, palletize securely, protect from humidity and direct sunlight, ensure good ventilation. |
| Shipping | Ship Arkema Rilsan BMN BLACK TLD PA11 in dry, sealed original packaging to prevent moisture absorption. Keep containers upright and protected from impact. Ambient transport is acceptable; avoid excessive heat and direct sunlight. This product is not regulated as dangerous goods for standard road, sea, or air freight. |
| Storage | Store Rilsan BMN BLACK TLD PA11 in its original, tightly sealed container in a cool, dry, well-ventilated area. Protect from moisture, direct sunlight, and excessive heat. Avoid exposure to open flames or strong oxidizers. Keep away from incompatible materials. Use dry, clean dispensing tools to prevent contamination. Follow manufacturer’s recommended storage conditions and shelf life. |
| Shelf Life | Shelf life is typically 2 years from manufacture when stored unopened, cool, dry, and protected from moisture. |
During monolayer extrusion of 6 mm to 16 mm outside-diameter air brake tubing from Arkema Rilsan BMN BLACK TLD PA11, the controlling variable is residual pellet moisture because PA11 hydrolyzes in the melt phase when water exceeds 0.08 wt%. Pellets are dried in a desiccant-bed dryer at 85 °C for 4 h to 6 h, with a supply-air dew point below -40 °C, before entering a single-screw extruder with an L/D 30:1 barrier screw. The melt temperature envelope is held between 225 °C and 245 °C. Screw speed is set to maintain stable gear pump inlet pressure; the gear pump reduces melt surging and limits wall-thickness variation. Vacuum calibration under -60 kPa to -80 kPa sets the outer diameter while internal air pressure maintains lumen roundness. Melt draw-down ratio is kept between 2.0:1 and 3.5:1 to balance crystallinity, spool memory, and burst retention. The terminal product is black, flexible monolayer tubing supplied in coils or cut lengths, validated to SAE J844 and ISO 7628 where compliance includes dimensional stability, zinc chloride stress-crack resistance, heat-aging burst performance, and low-temperature impact at -40 °C. Regrind addition is limited to 20 wt% and only after re-drying because dust and moisture lower the dimensionless pressure-shear stability in the metering zone.
| Parameter | Typical window | Measurement method or equipment |
|---|---|---|
| Pellet moisture before melt | ≤ 0.08 wt% | Karl Fischer titration, ISO 15512 |
| Dryer supply-air dew point | below -40 °C | Dew-point transmitter in dryer manifold |
| Drying residence time | 4 h to 6 h | Desiccant-bed dryer hopper |
| Melt temperature envelope | 225 °C to 245 °C | Melt thermocouple in head |
| Die draw-down ratio | 2.0:1 to 3.5:1 | Die area to finished tube section |
| Regrind addition | ≤ 20 wt% | Gravimetric blender |
Convoluted polyamide conduit for engine-compartment harness protection uses the same black PA11 grade, but the corrugator imposes a different thermal path than tube calibration. Melt temperature is held at the lower end of the PA11 processing range, between 220 °C and 235 °C, because post-die vacuum forming reduces molecular orientation and accelerates crystallization. Wall thickness in the finished conduit ranges from 0.25 mm to 0.50 mm, with inner diameters from 5 mm to 50 mm. The corrugator block temperature is maintained between 60 °C and 90 °C; block vacuum is pulled below -80 kPa to force the melt into corrugation valleys. Draw-off speed is slaved to extruder output to maintain a wall-to-diameter ratio below 0.10, because thicker sections sag before the block closes. The product is validated against OEM underhood chemical exposure specifications, with tensile strength after heat aging at 125 °C for 1,000 h measured according to ISO 527-2 after conditioning according to ISO 188. Black-level carbon black dispersion is controlled by melt filtration through 60/80 mesh screen packs to prevent surface pinholes that act as stress concentrators during harness bending. Terminal products are split or closed corrugated conduit cut to harness-assembly lengths.
For offshore unbonded flexible pipe, the PA11 pressure sheath is extruded over an interlocked steel carcass, and qualification is dominated by hydrolytic ageing, plasticization by produced gas, and rapid gas decompression after depressurization. Wall thickness is not fixed by a standard product table; it is calculated from the design pressure, the pipe internal diameter, and the PA11 allowable strain, with utilization factors derived from API 17J and ISO 13628-2. Extrusion lines for this segment typically operate with screw diameters from 90 mm to 150 mm, L/D 30:1 barrier screws, and crosshead tooling that applies the polymer over the carcass at melt temperatures between 220 °C and 240 °C. Wall thickness is continuously measured by ultrasonic gauging and controlled within 0.1 mm of target because local thinning determines collapse resistance. The black TLD pigment package is relevant for offshore only insofar as carbon black dispersion does not create microvoids that accelerate gas absorption. Qualification under sour conditions requires testing at the upper service temperature, commonly 60 °C, with gas partial pressures of CO2 and H2S defined by the field composition. Published data for this specific configuration in sour gas at high H2S partial pressure is limited; therefore, end users apply project-specific ageing programs based on the API 17J qualification dossier rather than relying on a single producer datasheet. Continuous service in water-saturated produced fluids above 65 °C is outside the generally accepted PA11 pressure-sheath boundary unless ageing data demonstrate sufficient residual elongation at the design life. The terminal product is a fused or welded continuous pressure sheath within the finished flexible pipe structure.
Tight-tolerance pneumatic control tubing in robotic end-of-arm tooling places the greatest demand on ovality and vacuum stability rather than burst pressure. The tube is extruded in metric sizes with outside diameters from 4 mm to 12 mm and wall thicknesses from 0.5 mm to 1.5 mm. The melt is processed at 230 °C to 240 °C through a 30:1 L/D single-screw extruder with a mixing pin section, then pulled through a vacuum calibration sleeve at a draw-down ratio between 1.5:1 and 2.5:1 to suppress die swell. Closed-loop laser gauging adjusts haul-off speed within 0.1% to maintain outer diameter tolerance of ±0.05 mm. The black grade is selected for UV resistance in exposed factory air drops and for low dust attraction in clean room assembly. Burst and dimensional validation is performed according to ISO 14743, while long-term hydrostatic strength is evaluated by ISO 1402 at 23 °C and 80 °C. The terminal product is pre-coiled black tubing with straightening memory, commonly used for compressed air supply to valve manifolds, vacuum cups, and sensing lines.
Fuel vent lines for spark-ignition small engines require a material that retains flexibility after immersion in oxygenated fuel blends while limiting hydrocarbon evaporative emissions from the vent circuit. BMN BLACK TLD PA11 is extruded as a monolayer tube with inner diameters from 2.0 mm to 5.0 mm and wall thicknesses from 0.75 mm to 1.25 mm. The melt temperature window is narrowed to 225 °C to 235 °C to avoid generating low-molecular-weight thermo-oxidative species that can later extract into fuel. In-line vacuum calibration is set to hold ovality below 0.05 mm because the formed bends at the fuel tank must seal against barbed fittings. Immersion testing in Fuel C with 10% ethanol is performed under ASTM D471 to track volume swell and hardness change; additional oxygenated-blend exposure is specified by OEM test schedules rather than by a single resin datasheet. The terminal product is supplied as cut lengths with heat-formed routing bends, frequently in small-engine evaporative emissions systems.
When the extrudate enters a coiling head at the end of a 30:1 L/D line, the rate of cooling governs residual crystallinity and coil memory. Industrial lubrication distribution lines made from BMN BLACK TLD PA11 are extruded in outside diameters from 6 mm to 16 mm with a nominal wall-to-diameter ratio of 0.08. The melt is kept between 230 °C and 240 °C; the first water bath is held at 30 °C to 50 °C to promote uniform spherulite growth before final cooling at 20 °C, which reduces post-coil kinking. Mineral oil and synthetic ester resistance is evaluated by ASTM D471 at 70 °C and 1,000 h, with dimensional change recorded against the original extruded bore. Pressure rating is verified by ISO 1402 hydrostatic testing at 1.5× the rated working pressure. The terminal product is pre-coiled polyamide tubing for central lubrication blocks, oil mist distribution, and pneumatic coolers in machine tool cells.
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Arkema Rilsan BMN BLACK TLD PA11 is a pelletized polyamide 11 resin derived from castor oil-sourced 11-aminoundecanoic acid. The BMN base grade occupies a defined viscosity class within the Rilsan PA11 injection-moulding and extrusion family; the BLACK TLD suffix denotes a carbon-black pigmentation package and a stabilization concentrate for heat and ultraviolet exposure. Under ISO 1043 the polymer is identified as PA11. Datasheet properties are generated after conditioning in accordance with ISO 291 at 23 °C and 50% relative humidity. The unfilled semicrystalline structure places the material between low-modulus polyolefins and higher-modulus short-chain polyamides. Because the TLD additive package influences melt flow, processing parameters should be verified against a lot-specific certificate of analysis; published data for the exact BMN BLACK TLD suffix is narrower than for unmodified BMN.
The practical processing envelope is controlled by residual moisture, melt temperature, and residence time. The polymer absorbs less water than PA6 or PA66, but melt-phase hydrolysis remains measurable when moisture exceeds 0.15 wt% and melt temperature rises above 250 °C. Desiccant drying at 80–90 °C for 4–6 h to a residual moisture level below 0.10 wt% is standard. At ambient relative humidity above 60%, drying may be extended to 8 h or combined with a hopper dryer operating at 90 °C. Single-screw extrusion with an L/D of 24:1 to 30:1 and a compression ratio of 2.5:1 to 3.0:1 is acceptable for simple profiles. Melt temperatures between 200 °C and 240 °C are used for low-shear profile extrusion, whereas injection moulding may require 230–250 °C depending on gate shear. The TLD stabilization system reduces discolouration during hot-runner dwell up to approximately 5 min, but oxidative chain scission accelerates beyond 10 min at 240 °C; shutdown procedures should purge with a PA11-compatible material.
On production-scale co-rotating twin-screw compounding lines with L/D 40:1, melt viscosity is sensitive to screw speed and feed rate. Excessive shear work generates local melt temperatures above 260 °C even when barrel set points remain at 230 °C. Barrel profiles should therefore maintain the metering zone at 220–235 °C and the compression zone at 200–215 °C. Vacuum devolatilization at −0.08 MPa is used to strip residual moisture from the melt, but surface splay in extruded profiles has been observed when vacuum is lost and moisture exceeds 0.20 wt%. Capillary rheometry under ISO 11443 shows shear-thinning behaviour with a flow behaviour index below 1.0 across 100–1000 s⁻¹ at 230 °C. Typical melt viscosity falls from approximately 200–400 Pa·s at 100 s⁻¹ to 60–120 Pa·s at 1000 s⁻¹. In injection moulding, mould temperatures of 30–60 °C balance crystallization rate and sink-mark control. Lower mould temperatures reduce cycle time but increase frozen-in stress at gate areas. Weld-line strength decreases as melt-front temperature falls; for thin-wall sections below 1.0 mm, mould temperatures below 40 °C should be validated by short-shot analysis.
| Property | Test method | Typical range |
|---|---|---|
| Density | ISO 1183-1 | 1.03–1.04 g/cm³ |
| Melting peak temperature | ISO 11357-3 | 188–190 °C |
| Water absorption at saturation | ISO 62 | 1.8–2.0% |
| Tensile yield stress | ISO 527-1/-2 | 45–50 MPa |
| Tensile elongation at break | ISO 527-1/-2 | 20–50% |
| Tensile modulus | ISO 527-1/-2 | 1200–1500 MPa |
| Flexural modulus | ISO 178 | 1000–1200 MPa |
| Notched Charpy impact at 23 °C | ISO 179-1/1eA | 5–7 kJ/m² |
| Notched Charpy impact at −30 °C | ISO 179-1/1eA | 3–5 kJ/m² |
| Heat deflection temperature at 0.45 MPa | ISO 75-1/-2 | 145–155 °C |
| Volume resistivity | IEC 62631-3-1 | 10¹²–10¹³ Ω·m |
The values in Table 1 are typical ranges from published datasheet envelopes, not specification limits. Certified values for a particular production lot appear on the Arkema certificate of analysis. Mechanical values shift with moisture content; dry-as-moulded samples show higher tensile modulus and lower elongation at break than conditioned samples.
In fuel-contact applications, PA11 is specified for its balance of hydrocarbon resistance and low permeation relative to PA12 and PA6. The long-chain aliphatic segment reduces the concentration of amide groups, limiting hydrogen-bonding sites and water uptake. In SAE J1737 fuel-line immersion testing, PA11 tubing grades show lower ethanol-blended fuel permeability than PA12 of equivalent wall thickness. Final SAE J2260 compliance depends on the entire multilayer tube construction, not on the resin alone. For BMN BLACK TLD, immersion studies under ISO 175 in Fuel C, diesel, and mineral oil can be used to generate change in mass and tensile strength. The grade is unsuitable for strong acids, phenols, and hot formic acid, where polyamides undergo hydrolysis or dissolution. Chlorinated solvents and high-polarity oxygenated solvents should be tested case-by-case. The black pigmentation and TLD stabilization package also provide ultraviolet protection for exterior under-hood components; colour and impact retention are better than unpigmented BMN, but published QUV data for this exact suffix should be obtained from Arkema technical service.
Comparative property positioning is design-dependent. Compared with PA6 and PA66, the PA11 backbone gives Rilsan BMN BLACK TLD a saturation water uptake near 1.9% rather than 8.0–9.5% for PA6. The consequence is less post-moulding dimensional drift and superior retention of tensile modulus in humid environments. PA11 also retains a ductile low-temperature response; PA66 tends toward brittle fracture below −10 °C in notched specimens, whereas PA11 remains ductile at −30 °C to −40 °C under comparable ISO 179-1/1eA conditions. Against PA12, the comparison is more symmetrical: PA12 has lower density and lower saturation water uptake, but PA11 has a higher melting point and can sustain use at 10–20 °C higher in continuous thermal exposure under ISO 2578 methodology. The black TLD grade therefore supplies a thermal advantage in under-hood clips and cable protection, while PA12 may be selected when weight and water stability dominate.
| Property | Rilsan BMN BLACK TLD PA11 | PA12 | PA6/PA66 |
|---|---|---|---|
| Density | 1.03–1.04 g/cm³ | 1.01–1.02 g/cm³ | 1.13–1.15 g/cm³ |
| Melting peak temperature | 188–190 °C | 176–180 °C | 220–265 °C |
| Saturation water uptake | 1.8–2.0% | 1.2–1.5% | 8.0–9.5% |
| Tensile modulus | 1200–1500 MPa | 1100–1400 MPa | 2500–3000 MPa |
| Notched impact at −30 °C | 3–5 kJ/m² | 4–6 kJ/m² | 2–4 kJ/m² |
Post-moulding dimensional stability is controlled by moisture uptake and crystallinity. For unfilled PA11 at room temperature, conditioning from dry-as-moulded to equilibrium at 50% RH typically increases dimensions by 0.2–0.3%. PA6 can exhibit 0.5–0.7% for the same transition. The grade is therefore used in electrical connectors, cable ties, and fluid connectors where assembled tolerances must not change substantially across seasonal humidity. Electrical volume resistivity measured under IEC 62631-3-1 is in the 10¹²–10¹³ Ω·m range for conditioned samples, but moisture and surface contamination reduce insulation performance. In low-temperature impact, the polymer’s relaxation behaviour supports snap-fit assembly at −20 °C to −30 °C; the minimum service temperature depends on stress concentration and moulding orientation. At elevated temperature, unfilled PA11 does not provide the creep resistance of glass-filled polyamides. Continuous load-bearing applications above 80 °C require creep testing under ISO 899-1 because the tensile modulus declines as the amorphous fraction relaxes.
Rilsan BMN BLACK TLD is processed into automotive brake-line clips, cable harness fasteners, pneumatic line connectors, and extruded profiles where black colour and heat stabilization are mandatory. In automotive production, injection machines with clamp force from 30 t to 200 t are used depending on cavity count. Typical cycle times for 1.5–2.0 mm wall thickness fall in the range of 20–35 s with mould temperatures of 40–60 °C. The material is also used as an extruded layer in spiral hydraulic protection sleeves because the long-chain structure resists crack propagation under cyclic flexing. In wire and cable, PA11 jacketing provides abrasion resistance after short-circuit thermal spikes; qualification follows automotive OEM specifications rather than a single ISO standard. For potable water and food-contact applications, migration compliance must be established under EU 10/2011 or FDA 21 CFR 177.1500 from grade-specific documentation. The black TLD package is intended for UV-stabilized exterior use; long-term outdoor colour retention should be verified by SAE J2412 or ISO 4892-2 accelerated weathering against the exact colour lot.
