| HS Code | 510248 |
| Density | 1.02 g/cm³ |
| Melting Point | 168 °C |
| Water Absorption 24h | 0.8 % |
| Tensile Modulus | 350 MPa |
| Tensile Strength At Yield | 32 MPa |
| Elongation At Break | 350 % |
| Flexural Modulus | 500 MPa |
| Izod Impact Notched 23c | no break |
| Shore D Hardness | 60 |
| Vicat Softening Temperature | 145 °C |
| Brittleness Temperature | -70 °C |
As an accredited Arkema Rilsamid AMNO P20 TLD PA12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Arkema Rilsamid AMNO P20 TLD PA12 supplied in 25 kg moisture-proof sealed bags, ensuring safe handling, transport, and storage. |
| Container Loading (20′ FCL) | 20′ FCL container loading for Arkema Rilsamid AMNO P20 TLD PA12, palletized and secured for safe, efficient transport. |
| Shipping | Rilsamid AMNO P20 TLD is a polyamide 12 (PA12) resin supplied as moisture-sensitive granules. Ship in sealed, dry packaging within a clean, ventilated container. Protect from humidity, heat, and direct sunlight. Not classified as dangerous goods; ensure proper labeling, no contamination, and stable stacking for safe transport. |
| Storage | Store Arkema Rilsamid AMNO P20 TLD PA12 in its original, unopened packaging in a cool, dry, well-ventilated area. Keep away from direct sunlight, heat sources, and moisture. Maintain temperatures below 30°C. Reseal partially used containers tightly to prevent humidity absorption. Proper storage preserves material properties and processing performance. |
| Shelf Life | Shelf life is 2 years when stored in original, unopened packaging in a cool, dry place away from direct sunlight. |
Coextrusion of aromatic fuel vapor return lines with Rilsamid AMNO P20 TLD demands a barrel profile that rises from 210°C in the feed zone to 235°C in the metering zone. The material is first dried in a desiccant dryer at 80°C for 4 h to 6 h until residual moisture is below 0.08% by Karl Fischer titration. A single-screw extruder with 30 mm to 45 mm screw diameter and an L/D ratio of 24:1 to 30:1 is used. Screw compression ratio is held between 2.5:1 and 3.0:1. Melt temperature measured at the die entry is limited to 225°C to 240°C. The melt is passed through a gear pump to reduce surging. Die head temperature is set at 215°C to 230°C. Vacuum sizing is applied at -0.02 MPa to -0.08 MPa. Water bath temperature is controlled from 15°C to 40°C. Typical line speed is 20 m/min to 60 m/min for 6 mm to 8 mm outside diameter. Wall thickness tolerance is held to ±0.05 mm with an ultrasonic gauge. The grade is coextruded as an inner or intermediate layer in a three-layer architecture with a high-density polyethylene tie layer and a fluoropolymer barrier. This structure reduces aromatic permeation in systems designed to meet SAE J2260 class fuel vapor resistance. Tensile testing after conditioning at 23°C and 50% relative humidity follows ISO 527-1/-2. Melt volume-flow rate is monitored by ISO 1133-1:2022. Density is verified to ISO 1183-1. Failure modes observed on production lines include melt fracture when die temperature drops below 205°C and gel formation when melt residence time exceeds 300 s above 250°C. Published literature on the specific AMNO P20 TLD permeation contribution in a three-layer structure is limited. The final tube is cut into lengths for fuel tank vent systems and canister purge lines. The absence of internal roughness and the ovality below 0.15 mm are the main release criteria.
Release testing under SAE J844 and DIN 74324 governs the manufacture of air brake tubing from AMNO P20 TLD. The grade is extruded into nominal outside diameters from 6.25 mm to 16.0 mm with wall thickness from 1.0 mm to 2.0 mm. Drying at 80°C for 4 h to 6 h reduces residual moisture to 0.08% maximum before extrusion. A 45 mm single-screw extruder with 28:1 L/D ratio and a compression ratio of 2.8:1 typically records melt pressure of 9 MPa to 14 MPa at a screw speed of 35 rpm to 60 rpm. Melt temperature is maintained at 230°C to 240°C. The tube is calibrated in a vacuum tank at -0.03 MPa to -0.07 MPa. Laser diameter gauges record outer diameter and ovality every 50 ms. Release criteria for air brake applications include dimensional tolerance to ±0.05 mm, ovality below 0.1 mm, and surface smoothness free of melt fracture. Burst pressure, tensile strength, elongation, and cold impact are verified according to the applicable clauses of SAE J844 and DIN 74324. Published batch data for AMNO P20 TLD in Type A and Type B air brake configurations is available only from converter qualification files. The material is coiled onto 100 m to 400 m reels with controlled back tension to prevent post-extrusion axial shrinkage. The finished tube is used in tractor-trailer service chambers, parking brake circuits, and suspension air supply lines. Avoid processing above 250°C because oxidative gel specks can reduce burst pressure variation within a coil.
Laser gauge dimensional logging on pneumatic tube extrusion lines running AMNO P20 TLD typically records ovality values below 0.05 mm at puller speeds of 60 m/min to 120 m/min. The application targets industrial compressed-air push-in networks with outside diameters of 4 mm, 6 mm, 8 mm, and 10 mm. Wall thickness is maintained at 1.0 mm for 4 mm and 6 mm outside diameter tubes and at 1.0 mm to 1.5 mm for larger diameters. The extruder barrel runs from 210°C to 230°C. Die and calibrator alignment is set to better than 0.02 mm to avoid spiral weld lines. Vacuum calibration is held at -0.02 MPa to -0.04 MPa. The finished tube is tested for fitting retention in compliance with ISO 14743 push-in connector requirements. Working pressure is geometry-dependent and must be read from the tube manufacturer's pressure chart. A 6 mm outside diameter by 4 mm inside diameter tube is commonly operated at 10 bar at 20°C, but cyclic pressure and elevated air temperature reduce allowable pressure by 30% to 50%. Dimensional stability under pressure depends on axial bore alignment and wall thickness variation below 0.04 mm. Drying requirements are identical to automotive tube extrusion because residual moisture above 0.1% produces surface bubbles and weakens burst resistance. The grade is selected for continuous flexing in robotic end-effector lines where polyurethane would soften excessively above 60°C. Published comparative fatigue data for AMNO P20 TLD against polyurethane pneumatic tubes is limited. The extruded tube is cut to standard lengths of 25 m, 50 m, or 100 m and assembled into push-to-connect circuits.
A pressure extrusion crosshead is used to apply AMNO P20 TLD as a cable jacket over twisted control cores. The melt is delivered at 230°C to 240°C with a draw-down ratio from 1.5:1 to 2.5:1. The crosshead tooling is configured for pressure rather than tube-on extrusion to fill interstices without damaging fine-wire insulation. Water cooling starts within 100 mm of the die exit to freeze surface gloss and stabilize the jacket. The jacket thickness is typically 0.5 mm to 1.5 mm depending on cable outside diameter. The grade offers lower saturated water uptake than PA6 and better cold impact than standard polyvinyl chloride. However, AMNO P20 TLD has no inherent flame-retardant classification. If the final cable must meet EN 45545-2 R22/R23 for rail applications, a flame-retardant cap layer or a filled flame-retardant grade is required over this jacket. Published data for this specific plasticised PA12 in EN 50264-3 cable jackets is limited, and full assembly fire performance must be qualified. Drying is critical because jacket blisters form if moisture content exceeds 0.08% at feed. The cable jacket is tested for tensile elongation and cold bend according to the relevant construction specification. In offshore control bundles, the jacket protects against cut-through, diesel splash, and saltwater spray. The material should not be exposed to continuous immersion in hot methanol above 60°C unless extractables and jacket embrittlement are validated. Extruded lengths are continuous on 500 m to 1,000 m cable drums. The main production defect mode is eccentric jacket wall when crosshead centering shifts by more than 0.05 mm.
The melt is fed into a straight crosshead for inner liner extrusion of hydraulic control lines with inside diameters from 6 mm to 25 mm and wall thickness from 0.75 mm to 2.0 mm. Barrel temperatures are set from 215°C to 235°C and the melt pump holds output variation below 1%. Vacuum calibration follows at -0.03 MPa to -0.06 MPa. The liner is then braided with aramid or steel wire and jacketed. The subsea production control industry specifies such liners within systems designed to ISO 13628-5. Impulse testing of the completed hose assembly follows ISO 6803. The liner must survive cyclic pressure without inner surface cracking. Methanol and glycol mixtures are used in subsea control fluids. Above 20% methanol content, accelerated plasticizer extraction from a plasticised PA12 liner may shift burst strength downward after 1,000 h at 60°C. Compatibility with an as-supplied AMNO P20 TLD liner must therefore be validated with the actual control fluid. The material should be dried to below 0.08% moisture before liner extrusion. Extruder residence time above 250°C must be kept below 300 s to avoid viscosity loss. Published long-term hydrolysis data for this specific grade in high-salinity water above 70°C is limited. Release testing includes burst pressure at 23°C and 60°C, inner wall roughness below 0.25 µm ra, and dimensional ovality below 0.15 mm. The finished liner is used in subsea hydraulic control umbilicals for blowout preventer actuation and production tree functions.
Microextrusion of monolayer catheter shafts from AMNO P20 TLD uses a 16 mm to 20 mm single-screw extruder with 20:1 L/D ratio and a screw compression ratio of 2.5:1. Melt temperature is controlled from 215°C to 235°C. A precision gear pump with 0.1 cm³/rev to 0.3 cm³/rev displacement stabilizes the melt stream. The die is configured for outside diameters from 1.2 mm to 2.8 mm and wall thickness from 0.20 mm to 0.40 mm. Water bath temperature is held at 10°C to 20°C. Puller speed ranges from 30 m/min to 150 m/min. Annealing at 80°C for 2 h reduces frozen-in axial stress and subsequent shrinkage in ethylene oxide sterilization. The shaft is used only after final device validation because bulk grade certification does not replace finished-device biocompatibility testing under ISO 10993-1, ISO 10993-5, and ISO 10993-10. Plasticizer migration in lipid-containing media at 37°C may alter flexural stiffness after 72 h and must be controlled as part of leachables testing. Published data for this specific plasticised PA12 in long-term implant or blood-contacting devices is limited. The material is therefore considered for short-term interventional catheter shafts and introduction sheaths rather than implantable devices exceeding 30 days. The main production defect is longitudinal wall thickness variation greater than 0.03 mm, which causes nonuniform pushability and kink radius. The finished shaft is tested for tensile strength at break according to ISO 527-2 and for outer diameter by laser scanning. Moisture is removed at 80°C to below 0.08% before microextrusion. The screw and barrel are purged after each lot transition because the grade leaves a lubricated residue that can contaminate next-run polymers.
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Arkema Rilsamid AMNO P20 TLD is a plasticized polyamide 12 extrusion compound supplied as granules for flexible tube and hose production. The grade designation combines a polyamide 12 base with a plasticizer level indicated by the P20 suffix and a tube-grade identifier indicated by TLD. The material is used for mono-layer pneumatic brake lines, fuel vapour return tubes, low-pressure hydraulic pilot lines, and protective jacketing in which lower tensile modulus and improved low-temperature ductility are required relative to semi-rigid PA12 tube grades. The polyamide 12 backbone is synthesized from laurolactam and contains a lower amide group density than PA6 or PA66; equilibrium water absorption at saturation is therefore lower, while resistance to aliphatic hydrocarbons and chloride-containing road de-icers is retained.
Before melt processing, the granules must be dried to a residual moisture content below 0.08% by mass. In sealed packaging the moisture content is generally below 0.10%, but exposure to plant air at 60% RH can raise moisture content to 0.20–0.30% within several hours. Hydrolysis during melting reduces molecular weight, producing surface roughness and loss of burst strength. The grade is therefore handled on closed-loop desiccant dryers rather than hot-air hoppers.
Residual moisture is measured by Karl Fischer titration according to ISO 15512, using a heating temperature of 180 °C. The method distinction matters for plasticized PA12: the plasticizer can evolve during high-temperature moisture analysis and falsely elevate water readings if the titration interval is not optimized. A dew-point-controlled closed-loop desiccant dryer is therefore the standard pre-drying configuration, with a dew point below −30 °C at the hopper inlet.
Unplasticized PA12 grades used for semi-rigid pneumatic tubing typically exhibit a tensile modulus in the 1400–1600 MPa range, a Shore D hardness of 72–78, and a Vicat softening temperature above 170 °C. The P20 formulation lowers tensile modulus to a published range of approximately 300–450 MPa, with Shore D hardness commonly reported in the 58–64 range and Vicat softening temperature between 140 °C and 150 °C. Density remains close to 1.01–1.03 g/cm³ because the plasticizer mass is of the same order as the displaced polymer free volume. Nominal strain at break values above 200% are cited in manufacturer technical literature. This combination allows the material to be clamped, bent, and routed through tight radii without the stress whitening commonly observed in stiffer PA12 tube grades.
The trade-off is a measurable reduction in tensile strength and upper service temperature. Components made from this plasticized grade should not be used as direct substitutes for unplasticized PA12 when hoop stress at elevated temperature is the limiting criterion. The lower Vicat softening point also narrows the window for post-extrusion heat setting and limits continuous service in underhood locations where local temperatures exceed 100 °C for extended periods.
| Property | AMNO P20 TLD | Unplasticized PA12 tube grade | Test method |
|---|---|---|---|
| Density at 23 °C | 1.01–1.03 g/cm³ | 1.01–1.02 g/cm³ | ISO 1183-1:2019 |
| Tensile modulus at 23 °C | 300–450 MPa | 1400–1600 MPa | ISO 527-1/-2 |
| Nominal strain at break | >200% | >200% | ISO 527-1/-2 |
| Shore D hardness | 58–64 | 72–78 | ISO 868 |
| Vicat softening temperature B50 | 140–150 °C | 170–180 °C | ISO 306 |
| Water absorption saturation at 23 °C | 1.1–1.5% | 1.2–1.5% | ISO 62 |
Compared with PA6 and PA66, the PA12 base provides lower water absorption at equilibrium and lower density. Compared with plasticized PA11, the PA12 grade is selected where the balance of hydrocarbon resistance and dimensional change in humid service favours the longer methylene sequence; direct substitution should be confirmed by finished-tube burst and permeation tests.
Long-term heat ageing of the P20 grade at continuous temperatures above 90 °C may result in gradual loss of plasticizer and increase in Shore D hardness. If retention of tensile elongation after 1000 h at 100 °C is a design requirement, the grade should be evaluated against unplasticized PA12 or a lower-plasticizer PA12 variant. Published data for this specific configuration is limited; heat-ageing curves should be generated on finished tubes using ISO 527 or the tube specification’s burst method.
Stable thin-wall extrusion of AMNO P20 TLD requires controlled shear history. Production lines for plasticized PA12 tube commonly use a single-screw extruder with an L/D ratio between 24:1 and 30:1 and a compression ratio from 2.5:1 to 3.5:1. A barrier screw with a Maddock or Egan mixing section prevents non-uniform plasticizer distribution and reduces melt-temperature variation at the die. The preferred barrel profile starts at 220–230 °C in the feed zone, rises to 235–245 °C in the metering zone, and holds the adapter at 230–240 °C. Die temperature is normally set between 230 °C and 250 °C, with measured melt temperature not exceeding 260 °C for residence times over 10 minutes. Above this threshold, plasticizer volatility and thermal oxidation accelerate, shown by yellowing and a decrease in elongation at break.
Die and calibration dimensions are established by draw-down ratio. A draw-down ratio between 1.5:1 and 2.5:1 is typical for tubing outside diameters of 6–12 mm with wall thickness of 1–2 mm. Vacuum calibration tanks are operated at 20–60 °C with internal air pressure between 0.1 bar and 0.3 bar; closed-loop diameter control using ultrasonic or laser heads is preferred for ovality below 0.05 mm. Melt-pressure variation across the breaker plate should be maintained within ±10% of the baseline value. Increases in pressure at constant screw speed often indicate screen pack plugging or a partially filled feed, while decreasing pressure can indicate granule bridging or screw wear.
Extruder zone residence time distribution also affects gauge stability. Screws with excessively long compression sections can generate frictional heat above 260 °C in the melt film, producing tear-drop gel particles. When gel counts exceed 10 particles/kg in finished tube, screw speed, barrel profile, and screen pack condition should be examined before changing raw material.
Processing failures on production-scale equipment include melt fracture when the die lip temperature falls below 220 °C, die drool at low-shear regions, and bubble formation when residual moisture exceeds 0.12%. Batch-to-batch variance in plasticizer content may alter melt viscosity; in-line rheometers or melt-pressure records should be used to detect lot shifts before tube dimensions drift outside specification.
| Parameter | Tube extrusion | Injection moulding |
|---|---|---|
| Drying temperature | 80–90 °C | 80–90 °C |
| Drying time, desiccant dryer | 4–8 h | 4–8 h |
| Residual moisture threshold | <0.08% | <0.08% |
| Melt temperature | 220–250 °C | 240–260 °C |
| Barrel front zones | 225–245 °C | 230–250 °C |
| Die or mould temperature | 20–80 °C | 20–80 °C |
| Screw L/D ratio | 24:1–30:1 | 18:1–25:1 |
Air brake tubing manufactured from the P20 grade is qualified to the mechanical and environmental requirements of SAE J844 and ISO 7628. Those standards specify post-assembly burst strength, tensile load resistance, cold impact at −40 °C, and resistance to zinc chloride road de-icer solutions. The plasticized PA12 matrix permits small-radius routing along axle housings and chassis members without excessive springback, while the amide backbone reduces stress-cracking in chloride-containing electrolyte films. In compressed-air service, tube ends are commonly fitted with push-to-connect brass or composite fittings; the tube’s low hardness permits reliable bite retention but requires fitting manufacturers to validate pull-out and leak performance after thermal cycling because the plasticized grade compresses more than rigid PA12 under identical clamping force.
Fuel vapour return lines are a secondary application. PA12 offers lower permeation than elastomeric hose for aliphatic fuel vapour, but the P20 grade is a mono-layer material and is not normally sufficient for the most stringent evaporative emission limits without a barrier layer. Published data for this specific configuration is limited; permeation values should be measured on finished tube assemblies according to SAE J30 or the vehicle manufacturer’s internal protocol. Hydraulic pilot lines for low-pressure circuits are possible where operating pressure does not exceed the burst-pressure derating specified by the tube standard.
External tube printing inks must be selected for polyamide substrates to avoid stress cracking; ink solvents such as methyl ethyl ketone can promote solvent crazing in stressed tube sections. For outdoor exposure, carbon black-filled versions or UV-stabilized compounds are preferred; the natural P20 TLD grade may require UV stabilizer in the final formulation or black masterbatch addition.
Low-temperature ductility of the P20 grade is achieved by internal plasticization, which shifts the ductile-to-brittle transition to lower temperatures relative to unplasticized PA12. The exact transition temperature depends on test speed, notch geometry, wall thickness, and moisture condition. Automotive specifications require testing on finished tube assemblies at −40 °C, not on dry granules. Cold impact performance is therefore a system property of the tube geometry and processing history rather than an intrinsic resin constant.
Zinc chloride resistance is one of the principal reasons for specifying PA12 in winter road environments. The material is resistant to stress cracking in 50% zinc chloride solution at 50 °C, as required by tube specifications, but plasticizer migration can be accelerated by hot polar oils, ester-based hydraulic fluids, and strong organic solvents. Compatibility with DOT brake fluids, biodiesel blends above B20, and aggressive degreasers should be qualified on finished tubes under the maximum service temperature and pressure. The upper continuous service temperature of the plasticized formulation is below that of unplasticized PA12; applications with local temperatures above 100 °C require confirmation of creep, hoop stress retention, and plasticizer migration.
Manufacturer documentation for Rilsamid AMNO P20 TLD references compliance with REACH Regulation (EC) No 1907/2006 and RoHS Directive 2011/65/EU for heavy-metal restrictions. Food-contact suitability must be confirmed against the relevant migration criteria; polyamide 12 may be considered under FDA 21 CFR 177.1500 for nylon resins, but the plasticizer used in the P20 formulation introduces an additional additive layer that requires verification under the specific food type and temperature. Medical tubing applications require separate biocompatibility testing to ISO 10993 and are not supported by standard industrial documentation unless stated by the supplier.
The grade should not be incinerated without licensed emissions control, and melt fumes from overheating should be extracted. Combustion products include carbon dioxide, water, and nitrogen oxides; incomplete combustion can release carbon monoxide and minor amide degradation species. Extruder purge waste is not classified as hazardous under EU waste codes unless contaminated with oils or solvents.
Regrind from start-up scrap, dimensionally non-compliant tube, and edge trims can be closed-loop recycled into virgin material at addition levels up to 20%, provided the regrind is dried to the same 0.08% moisture threshold and is free of oil, dust, and fitting residues. Above 20%, surface roughness and elongation at break usually degrade first because repeated heat history reduces molecular weight and plasticizer distribution becomes less uniform. Burst strength may remain acceptable for low-pressure applications while cold impact and appearance deteriorate. Screen packs of 100–150 mesh are typically positioned before the breaker plate to remove carbonized particles. Regrind exposed to plant humidity should be dried for an additional 2–4 h; drying time is not a substitute for moisture measurement, and Karl Fischer titration according to ISO 15512 should be used for lot release. Extruders with side-fed regrind must maintain a constant regrind-to-virgin gravimetric ratio; volumetric blending can produce melt-viscosity swings that lead to wall-thickness variation in thin-wall tube.
