| HS Code | 438056 |
| Material | Rilsamid AESNO 14 TL |
| Polymer | Polyamide 12 (PA12) |
| Density | 1.02 g/cm³ |
| Melting Point | 172 °C |
| Tensile Strength | 37 MPa |
| Elongation At Break | 250 % |
| Flexural Modulus | 400 MPa |
| Charpy Impact Strength | No break (23 °C) |
| Hardness | 55 Shore D |
| Vicat Softening Temperature | 130 °C |
| Water Absorption | 0.9 % (24 h) |
As an accredited Arkema Rilsamid AESNO 14 TL PA12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Arkema Rilsamid AESNO 14 TL PA12 is supplied in 25 kg sealed, moisture-proof bags, ensuring safe handling, transport, and storage. |
| Container Loading (20′ FCL) | 20′ FCL: 25kg bags on pallets, shrink-wrapped and secured, approximately 18-20 pallets per container, weight-optimized for PA12 resin. |
| Shipping | Arkema Rilsamid AESNO 14 TL PA12 is a polyamide 12 resin supplied as dry pellets. Ship in sealed moisture-proof bags or containers to prevent water absorption. Transport at ambient temperature, avoiding excessive heat and humidity. Not classified as dangerous goods under standard regulations, but keep dry and protected during transit. |
| Storage | Store Arkema Rilsamid AESNO 14 TL PA12 in its original, unopened packaging in a cool, dry, well-ventilated area. Avoid direct sunlight, heat sources, and moisture exposure; reseal tightly after use. Keep away from oxidizing agents. Ideal storage temperature is below 30°C (86°F). Proper storage maintains material performance and prevents degradation. |
| Shelf Life | Store tightly sealed in original packaging, in a cool, dry place. Shelf life is two years from the date of manufacture. |
On a 45 mm single-screw tubing line with a 30:1 L/D barrier feed and a 0.8 mm annular die land, the first production failure mode observed with Rilsamid AESNO 14 TL PA12 is not melt fracture but moisture-induced longitudinal weld-line porosity. Batches stored above 60% relative humidity without sealed hopper dryers show residual moisture levels above 0.15 wt% when sampled by ISO 15512 Method B. At melt temperature 230°C, that moisture expands at the screw tip and remains trapped in the annular weld line, producing microvoids that pass routine 1.5 MPa leak testing at 23°C but fail -40°C cold impact after SAE J844 conditioning. The correct drying window is 80°C for 4 h to 6 h at a dew point of -30°C, reducing moisture to 0.10 wt% or lower. Industry compliance for air brake tubing is confirmed against SAE J844 and ISO 7628-1:2010 for outside diameter and wall thickness, with production lots pulled for burst pressure, heat aging at 100°C for 72 h, and low-temperature impact testing. Compound entry for the tube wall is set at 100 parts by weight AESNO 14 TL, 2.0–2.5 parts by weight carbon black masterbatch containing 45% carbon black in a PA12 carrier, and 0.2–0.5 parts by weight hindered phenol stabilizer masterbatch; no external plasticizer is added because the semi-rigid grade already provides the required low-temperature flexibility. On the production floor, the extrusion profile uses barrel zones of 210°C, 220°C, 230°C, 235°C, and 240°C, with head pressure maintained at 15 MPa to 25 MPa through a 60/80/100 mesh screen pack and a vacuum vent at -0.08 MPa before the metering section. A gear pump with a capacity of 12 cm³/rev dampens screw-pulse variation and holds output variation below 0.3% when the screen pack differential pressure is below 8 MPa; if differential pressure exceeds 12 MPa, shear heating raises melt temperature by 5°C to 8°C and die swell reduces final wall thickness by 0.03 mm to 0.05 mm. The tube passes through a closed-loop vacuum calibrator with water at 20°C, and haul-off speed is controlled to hold wall thickness at ±0.05 mm across 6.4 mm, 9.5 mm, and 12.7 mm outside diameter. Finished part families from this line include tractor air supply tubing, trailer spring brake circuit lines, and cab suspension pneumatic conduits for Class 6–8 commercial vehicles.
Five-extruder coextrusion runs for low-permeation diesel return line construction show that AESNO 14 TL serves as the outer and inner polyamide layers around an EVOH barrier. The processing condition that determines long-duration SAE J2260 compliance is not the initial hydrocarbon permeation value, but the migration of low-molecular-weight species from the semi-rigid PA12 into the tie-layer interface during thermal aging. Coextrusion trials with layer thickness control to ±0.02 mm show that when the outer PA12 is run above 245°C for more than 20 min residence time, the viscosity falls enough to distort the 0.05 mm tie layer and produce intermittent EVOH thinning. The layer distribution is therefore set as follows:
| Layer sequence | Material composition | Thickness window | Process control limit |
| Outer jacket | 100 parts AESNO 14 TL + 2.0 wt% carbon black masterbatch | 0.20–0.25 mm | Melt temperature ≤245°C |
| Tie layer | Maleic-anhydride-grafted PA12 | 0.05 mm ±0.01 mm | Thickness control ±0.01 mm |
| Barrier layer | Ethylene-vinyl alcohol copolymer | 0.08–0.12 mm | Residence time ≤20 min |
| Inner fuel-contact layer | 100 parts AESNO 14 TL + 0.5 wt% heat stabilizer masterbatch | 0.10–0.15 mm | No regrind permitted |
Compliance is evaluated under SAE J2260 permeation limits, ISO 19013-1 diesel fuel hose dimensional stability, and ISO 1817 resistance to test liquid immersion; however, published data for this specific semi-rigid PA12 grade after 1,000 h biodiesel exposure is limited, so end-use validation against the actual fuel blend is performed before production release. The downstream process is a five-layer coextrusion line with individual gravimetric feeders, barrier screw temperatures of 220°C to 240°C, an annular stack die, and vacuum calibration after forming. The outer layer extruder is a 35 mm single screw, the inner layer extruder is 25 mm, and the EVOH extruder is 20 mm; feed rate variation is held below 0.5% to prevent layer thickness drift. Post-extrusion, the tubing is annealed at 120°C for 60 min to reduce frozen-in stress and stabilize fitting retention. Finished products include 8 mm and 10 mm outside diameter diesel return lines for heavy-duty engines where fuel temperatures remain below 100°C.
Industrial pneumatic control tubing produced at 4 mm to 16 mm outside diameter places the tightest demand on ovality recovery after vacuum calibration, because small-diameter lines are cut into 500 mm lengths and inserted into push-in fittings without additional heat forming. In this application, the vacuum calibration table must be at least 400 mm long and split into three stages: -0.03 MPa, -0.06 MPa, and -0.09 MPa. If the first stage is reduced to -0.01 MPa to lower friction, the tube cross-section becomes ovular and the fitting retention force falls below the ISO 14743:2004 push-in connector pull-out requirement. Formulation for indoor machine automation lines is 100 parts AESNO 14 TL, 2.0–2.5 parts carbon black masterbatch, and 0.3 parts processing stabilizer; for UV-exposed outdoor runs, the carbon black level is raised to 2.5 wt% and the compound is tested according to ISO 4892-2 Method A for artificial weathering before customer approval. Melt processing uses a grooved-feed extruder with L/D 30:1, screen pack 60/80 mesh, melt temperature 220°C to 235°C, and a two-stage vent at -0.08 MPa. Cooling water temperature is limited to 25°C maximum; at 30°C, line speed for 1.0 mm wall must be reduced by 15% because the surface sheet remains soft through the puller. The line speed is limited by cooling capacity rather than melt strength; for 1.0 mm wall thickness, production speeds up to 80 m/min are used, while 1.5 mm wall runs at 50 m/min. Terminal products are PU-coated and uncoated pneumatic control lines for robot dress packs, semiconductor clean-dry-air drops, and packaging machinery pneumatic circuits.
Cable protection conduit for railway rolling stock and mass transit vehicles requires flexibility at -40°C while maintaining crush strength under foot traffic and cable bundle weight. Replacing a rigid PA12 with the lower-modulus AESNO 14 TL changes the minimum bending radius but also lowers the upper service temperature under continuous load. In this sheath compound, AESNO 14 TL constitutes 95.0–96.5 wt% of the finished compound, with 2.5–3.0 wt% carbon black masterbatch for UV stabilization and 0.2–0.4 wt% lubricant masterbatch to control friction against cable jackets during pulling. Compliance is verified against EN 50264-1 for low-fire-hazard rolling stock cable construction and IEC 60092-351 for marine cable sheath performance, with additional smoke density testing according to EN 61034-2 when the conduit is part of a cable assembly. The conduit is produced on a crosshead die with melt temperature 230°C to 250°C, screw cooling in the feed zone to prevent pellet bridging, and a vacuum tank length of 3 m for diameters up to 25 mm. For diameters above 20 mm, internal air pressure of 0.02 MPa is used to hold the tube against the calibrator without blocking the vacuum slots. Critical process boundaries are: pre-drying at 80°C for 5 h is mandatory if storage humidity exceeds 60%; reel winding tension should not exceed 0.5 MPa line stress because residual ovality becomes permanent when the tube is coiled hot. Finished cable protection products include corrugated and smooth conduits for railway carriage end walls, transit bus battery cable ducts, and marine deck engine-room harnesses.
Injection-moulded push-to-connect fittings made from AESNO 14 TL shift the critical variable from melt pressure to part crystallinity at the collet retention groove. Mould temperature below 30°C generates a fine spherulitic skin layer, but the thick-walled body develops internal stress that causes cracking after thread-forming operations. Increasing mould temperature to 60°C improves the crystalline structure and raises notched impact strength, but above 80°C the cycle time extends beyond 45 s and the demoulded part is soft enough to distort in the ejection pins. The injection profile uses barrel temperatures of 230°C, 240°C, 245°C, and a nozzle at 240°C, with a holding pressure of 60 MPa to 80 MPa and back pressure of 0.5 MPa to 1.0 MPa. The formulation is 98.5–99.0 wt% AESNO 14 TL, 0.5–1.0 wt% carbon black masterbatch for laser marking visibility, and 0.2 wt% antioxidant masterbatch; mould release agents are limited to 0.05 wt% because higher levels reduce the interference fit on the tube barb. Compliance for the finished fitting is evaluated under ISO 14743:2004 for push-in connector pull-out strength, while incoming resin quality is checked by melt volume-flow rate according to ISO 1133-1:2022 at 235°C with 2.16 kg load. The mould is a hot-runner, multi-cavity tool with a valve gate placed opposite the collet groove to avoid weld lines in the load-bearing zone. After ejection, fittings are annealed at 100°C for 30 min to stabilize dimensions before thread tapping and ring insertion. Terminal parts include union elbows, branch tees, bulkhead connectors, and plug-in banjo couplings for pneumatic automation circuits.
Spiral wrap for bundling hydraulic hoses is produced in strip form at 0.5 mm to 1.0 mm thickness through a slot die with melt temperature 220°C; the downstream step is edge trimming and perforating, not vacuum sizing. Compliance is limited to UL 94 HB flammability and RoHS 2011/65/EU for lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE. The compound contains 100 parts AESNO 14 TL and 2.0 wt% carbon black masterbatch; regrind is restricted to 20 wt% because higher levels reduce melt viscosity enough to cause die-lip drool. Finished parts are spiral wraps and split sleeves for agricultural, construction, and mining equipment hydraulic hose bundles.
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Arkema Rilsamid AESNO 14 TL is a plasticized, heat-stabilized polyamide 12 (PA12) extrusion grade. The designation AESNO identifies a semi-rigid plasticized PA12 tubing family, 14 denotes the melt-viscosity position within that family, and TL indicates a stabilization package matched to continuous tube and profile extrusion. The compound is supplied in cylindrical pellet form and is specified when low-temperature impact strength, resistance to aliphatic hydrocarbons, and flexibility are required in pneumatic, fuel vapor, and hydraulic line applications. Melt processing must be preceded by drying to a residual moisture content below 0.10 %; the polyamide matrix undergoes hydrolytic chain scission when pellets are processed with moisture contents above 0.20 % in the hopper, causing viscosity loss and surface splay. The mechanical response of AESNO 14 TL is moisture-dependent: absorbed water reduces tensile modulus and increases elongation at break.
Representative datasheet values are shown in Table 1. The values are for the dry-as-molded condition unless noted; conditioned values shift depending on equilibrium moisture content according to ISO 1110.
| Property | Test method | Typical value |
|---|---|---|
| Density | ISO 1183 | 1.03 g/cm³ |
| Water absorption, saturation at 23 °C | ISO 62 | 1.3 % |
| Melting temperature, DSC | ISO 11357-1/-3 | 174 °C |
| Tensile modulus | ISO 527-1/-2 | 430 MPa |
| Tensile stress at yield | ISO 527-1/-2 | 28 MPa |
| Nominal strain at break | ISO 527-1/-2 | >200 % |
| Charpy notched impact strength at 23 °C | ISO 179/1eA | 9 kJ/m² |
| Charpy notched impact strength at −40 °C | ISO 179/1eA | 5 kJ/m² |
| Vicat softening temperature, 50 N | ISO 306/B50 | 135 °C |
| Shore D hardness, 15 s | ISO 868 | 58 |
The tensile modulus of 430 MPa is the primary datum for bending radius calculations in small-diameter tubing. The notched Charpy impact of 5 kJ/m² at −40 °C supports low-temperature ductility, but it is lower than the room-temperature value of 9 kJ/m², indicating that notch sensitivity increases at low temperature. The Vicat softening temperature of 135 °C under 50 N loading establishes a short-term heat-resistance boundary; continuous service above 100 °C under internal pressure requires long-term creep-rupture testing according to ISO 9080.
On production-scale single-screw extruders with L/D 30 and 45 mm barrier screws, the die-entry melt temperature is normally held between 230 °C and 250 °C. The upper boundary is set by oxidative degradation: PA12 held above 260 °C for more than 15 min shows yellowing, viscosity reduction, and black-spec formation at stagnant screw-root zones or dead spots behind the breaker plate. A melt pump is beneficial for multi-lumen tubing with wall thickness below 0.5 mm; it dampens screw pulsations and holds die inlet pressure within ±0.1 MPa, a setting observed to reduce wall-thickness deviation to ±0.02 mm on calibrated vacuum-tank lines. The barrel profile is typically ramped from 220 °C in the feed zone to 240 °C in the metering zone, with the die at 230 °C. Screw speed must be set so that specific throughput does not exceed the plastication capacity of the screw; exceeding this capacity produces unmelted pellets and pressure fluctuations.
Pre-drying at 80 °C for 4 h to 6 h in a desiccant dryer with a dew point not higher than −30 °C is required when packaging has been opened or ambient relative humidity exceeds 60 %. Hot-air drying alone does not reduce the equilibrium moisture content of PA12 pellets below 0.10 % under humid plant conditions. Dried pellets should be conveyed in closed or nitrogen-purged lines and processed within 4 h; otherwise surface moisture re-absorption creates splay, microvoids, and intermittent melt fracture on the tube outer surface.
An infrared melt-temperature sensor rather than a probe thermocouple is recommended when the tube line runs above 40 m/min because the probe tip disturbs the melt stream and can read lower than actual polymer temperature by up to 5 °C. Vacuum calibration should maintain water temperature between 15 °C and 40 °C. Lower water temperatures can chill the tube surface too quickly and produce a high-shrinkage skin, while higher temperatures reduce roundness control. Vacuum pressure should be limited to −0.02 MPa to −0.06 MPa; excessive vacuum increases friction and can draw low-molecular-weight species to the calibrator surface, increasing plate-out.
Chemical resistance of the PA12 matrix in AESNO 14 TL covers aliphatic hydrocarbons, diesel fuel, zinc chloride brine, mineral oils, and greases at temperatures up to 100 °C. Concentrated sulfuric acid, formic acid, phenol, and chlorinated solvents degrade or dissolve polyamide. The polar plasticizer in the AESNO family is extractable by prolonged contact with methanol, ethanol, or methyl ethyl ketone, which increases Shore D hardness and reduces nominal strain at break. For fuel line service, immersion testing according to ISO 175 or ASTM D543 should be conducted when the fluid contains more than 10 % by volume ethanol or methanol. Published data for this specific plasticized grade in high-percentage biodiesel immersion is limited; long-term exposure above B10 biodiesel blends requires end-use validation on finished tube assemblies.
The plasticizer migration rate is temperature-dependent. In a closed fuel system at 60 °C, extraction of the plasticizer by fuel simulant is slower than at 100 °C; tests at the higher temperature are therefore used as an accelerated condition but may overpredict hardening. The material should not be combined with amine-based stabilizer masterbatches that interact with the manufacturer’s stabilization package; such interactions can cause premature yellowing and loss of low-temperature impact.
In pneumatic tubing, the substitution of an unplasticized PA12 with AESNO 14 TL reduces tensile modulus from approximately 1,400 MPa to 430 MPa. This change increases allowable bending strain before kinking and reduces fitting insertion force. The same substitution lowers hoop stress capacity under internal pressure. Burst-pressure calculations should be executed according to ISO 1402 or the relevant SAE J844 tubing specification at the maximum service temperature. Low-temperature impact performance at −40 °C reduces brittle fracture during vehicle assembly, but the Shore D hardness of 58 is lower than that of unplasticized PA12; abrasion against metal clips, nylon cable ties, and frame edges is therefore higher. In applications where circumferential surface wear dominates, a higher-hardness polyamide or a protective jacket is required.
The 14 TL viscosity position differs within the AESNO family. Capillary rheometry according to ISO 11443 shows that the 14 TL grade has higher melt flow and lower extruder head pressure than the 20 TL and 40 TL designations at the same melt temperature and shear rate, which is advantageous for thin-wall multi-lumen profiles and coextrusion with PA12 outer layers. The lower melt strength of 14 TL increases sensitivity to parison sag in blow moulding and to diameter variation in unsupported tube extrusion. Compared with a higher-plasticizer AESN P40 TL grade, the 14 TL grade exhibits higher tensile modulus, better dimensional stability, and lower ultimate elongation. Grade selection should be confirmed by spiral-flow and pressure-drop trials on the production tool rather than by melt flow index alone, because plasticized PA12 compounds are shear-sensitive and their apparent viscosity depends on moisture content and shear history.
The base PA12 resin may be formulated for European Union food-contact requirements under EU 10/2011 and United States FDA 21 CFR 177.1500, but the plasticizer and stabilization package in AESNO 14 TL requires migration testing for each end-use condition before food-contact claims can be made. Automotive low-volatile-organic-compound and fogging performance must be verified by VDA 277 or VDA 270 on the finished tube because extrusion temperature and downstream cooling influence residual monomer and plasticizer emissions. The grade is not classified as a medical-grade PA12, and no ISO 10993 biocompatibility data should be assumed. Compliance with REACH Regulation EC 1907/2006 and RoHS Directive 2011/65/EU should be confirmed from the current safety data sheet and product declaration.
Surface defects observed on production lines running AESNO 14 TL can be classified as moisture splay, melt fracture, and plasticizer plate-out. Moisture splay appears as longitudinal silver streaks and is corrected by verifying dryer dew point below −30 °C and pellet residence time of 4 h to 6 h. Melt fracture appears as shark-skin roughness at the die exit and is controlled by increasing die temperature to 230 °C and reducing shear rate, or by adding a fluoropolymer processing aid at 0.05 % to 0.15 % by mass when high line speeds are unavoidable. Plasticizer plate-out forms a waxy film on the vacuum calibration tank and is removed by alkaline cleaning; the rate of plate-out increases when melt temperature exceeds 250 °C or when barrel dwell time exceeds 10 min.
Injection molding of fittings from AESNO 14 TL is less common than extrusion but is used for barbed connectors and quick-connect bodies. A mold temperature of 40 °C to 60 °C and holding pressure of 60 MPa to 80 MPa are typically applied. Linear mold shrinkage of the plasticized grade is lower than unplasticized PA12, with typical values of 0.006 mm/mm in the flow direction and 0.008 mm/mm transverse to flow. Gate freeze-off occurs earlier than in the 20 TL grade; gate diameter should be at least 0.8 mm for thin-wall fittings to prevent short shots and sink marks.
Compared with PA11 flexible tubing grades, the PA12 backbone of AESNO 14 TL offers lower moisture uptake than polyamide 6 but slightly higher than PA11. The water absorption at saturation of PA12 is approximately 1.3 %, which is higher than the 1.0 % typical for PA11 under the same ISO 62 condition. In fuel vapor lines, this difference affects the equilibrium moisture content of the tube wall and, in turn, the electrical conductivity of fuel systems. The plasticizer package in AESNO 14 TL is optimized for alcohol-containing fuels up to 10 % by volume; beyond this concentration, extraction and hardening must be experimentally validated.
