| HS Code | 371055 |
| Density | 1.01 g/cm³ |
| Melting Point | 178 °C |
| Glass Transition Temperature | 40 °C |
| Tensile Modulus | 1600 MPa |
| Tensile Yield Strength | 45 MPa |
| Elongation At Break | >200% |
| Charpy Impact Strength 23 C Notched | 6 kJ/m² |
| Shore Hardness D | 75 |
| Water Absorption 24h | 0.20% |
| Water Absorption Saturation | 1.4% |
| Heat Deflection Temperature 1 8 Mpa | 45 °C |
| Viscosity Number | 80 cm³/g |
As an accredited Evonik Vestamid L2101F Nylon 12 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Evonik Vestamid L2101F Nylon 12 is supplied in 25 kg sealed moisture-resistant bags, ensuring safe handling and storage. |
| Container Loading (20′ FCL) | 20′ FCL: Evonik Vestamid L2101F Nylon 12 granules packed in 25kg bags, palletized and secured, shipped dry and ventilated. |
| Shipping | Evonik Vestamid L2101F Nylon 12 ships as dry, free-flowing granules in sealed moisture-proof bags or drums. It is non-hazardous for transport, but should be kept dry and away from direct heat, humidity, and contaminants. Store in original packaging in a cool, ventilated area to preserve processing quality. |
| Storage | Store Evonik Vestamid L2101F Nylon 12 in its original, unopened packaging in a cool, dry, well-ventilated area away from direct sunlight, heat, and moisture sources. Keep containers tightly sealed to prevent water absorption. Avoid contact with oxidizing agents. Under proper storage conditions, shelf life is typically two years from delivery. |
| Shelf Life | Shelf life is approximately two years when stored unopened in a cool, dry place, protected from moisture and direct sunlight. |
Pre-dried Vestamid L2101F at 0.08–0.10 % residual moisture is fed to a 45 mm single-screw extruder with a 24:1 L/D barrel, a barrier screw, and a 2.5:1–3.0:1 compression ratio. The barrel profile is split between 210 °C and 240 °C, with melt temperature held at 235–245 °C at the die. In air brake tubing produced to DIN 73378 and SAE J844, the base resin is compounded with 2.0–2.5 wt% carbon black masterbatch and 0.2–0.5 wt% external lubricant. The carbon black loading is specified to retain elongation after 1000 h of ISO 4892-2 xenon-arc weathering. Field records from production lines show that melt-temperature excursions above 260 °C generate gel particles that interrupt vacuum sizing and increase scrap rates. Vacuum calibration is run at -0.4 to -0.6 bar, and wall thickness is monitored by ultrasonic gauge to a tolerance of ±0.05 mm. Post-extrusion annealing at 140–150 °C for 30 min reduces axial shrinkage below 2 % when tested at 150 °C for 15 min. Pre-drying in a desiccant dryer at 80 °C for 4–6 h is mandatory when ambient relative humidity exceeds 60 %; hydrolytic chain scission at higher residual moisture causes a measurable loss in burst strength before the part reaches the 4× working-pressure burst verification used on automotive air brake lines. Converters typically limit in-plant regrind to 20 wt% for this pressure-sensitive application. The processed output is converted into coiled pneumatic lines, air suspension tubing, fuel tank vent lines, and spiral-cut protective sleeving for commercial vehicle platforms.
Five-layer constructions using Vestamid L2101F as the inner and outer layers are processed on coextrusion lines where the barrier polymer is EVOH and the tie layers are maleic anhydride-grafted polyolefin. Production constructions in this sector typically use inner and outer PA12 layers in the range of 0.20–0.30 mm, an EVOH barrier layer of 0.05–0.10 mm, and tie layers of 0.02–0.05 mm each. These ratios are not fixed; they are adjusted by the converter to meet SAE J2260 low-permeation fuel system tubing requirements and platform-specific evaporative emission targets. The dominant process conflict is viscosity mismatch between PA12 and EVOH at the die. PA12 is run at 240 °C melt temperature, while the EVOH extruder is normally set 15–20 °C lower to avoid thermal decomposition. If the interfacial pressure drop across the spiral mandrel die fluctuates, layer-thickness error propagates to the barrier layer and can increase hydrocarbon permeation even when the total wall thickness remains within specification. Converters monitor die-lip temperature uniformity to ±2 °C and use a 90° peel jig at 25 mm/min to measure tie-layer adhesion; peel force below 2 N/mm indicates interfacial delamination risk. Post-extrusion conditioning at 23 °C and 50 % relative humidity for 48 h stabilizes dimensions before cut-to-length winding. Raw Vestamid L2101F alone does not meet modern evaporative emission limits; the finished multilayer structure is the compliant article. End products include low-permeation fuel vapor lines, evaporative canister purge lines, and fuel filler neck vent tubes for spark-ignition engines.
In wire and cable jacketing lines, Vestamid L2101F is extruded as a halogen-free outer sheath over XLPE or fluoropolymer primary insulation. The formulation is adjusted with 2.0–3.0 wt% carbon black masterbatch for UV resistance and 0.5–1.0 wt% processing lubricant to reduce die drool. The jacket is applied through a crosshead die with a draw-down ratio of 1.2:1–1.8:1 and a conductor preheat of 80–100 °C to control adhesion and post-shrinkage. Cooling is staged in a water trough at 40–60 °C; lower quench temperatures increase frozen-in orientation and can push shrinkage above 2 % when tested at 150 °C for 15 min under ISO 6722-1 road-vehicle cable requirements. OEM wire specifications such as LV 112-1 require abrasion, chemical, and temperature-class validation. The finished jacket contains no intentionally added halogens, and converters verify heavy-metal limits under RoHS Directive 2011/65/EU. Continuous melt temperature above 250 °C promotes die-lip buildup and intermittent surface roughness on thin-wall jackets of 0.20–0.40 mm. Processors report that a screen pack differential above 50 bar indicates filter blinding and requires shutdown before jacket concentricity drifts. Typical products include ABS sensor cable jackets, engine-compartment wiring harness sleeves, and fuel sender unit wire sheathing.
Unbonded flexible pipe construction uses a PA12 outer sheath over a helically wound carcass and pressure-armour layers. The resin selection is qualified under API 17J as part of the finished flexible pipe system, not as a standalone material. Long-term hydrostatic design values are derived from pipe-grade PA12 compounds tested under ISO 9080; published data for this specific configuration of Vestamid L2101F is limited, and the converter must establish the design basis through system-level qualification. On a 90 mm single-screw extruder with 24:1 L/D, operators record barrel settings from 190 °C to 240 °C and a die set point of 235 °C. Melt pressure typically runs between 120 bar and 180 bar depending on screw speed and screen-pack condition; a filter pressure drop above 50 bar is the replacement threshold. Pre-drying to 0.10 % moisture or lower is critical because residual water acts as a hydrolytic degradation source during long residence times at melt temperature. The sheath is vacuum-calibrated to a wall thickness of 3–5 mm and cooled in staged water baths at 40 °C to avoid excessive crystallinity. Regrind is restricted to 20 wt% for pressure-rated service because higher levels compromise slow crack growth resistance. The PA12 outer sheath provides abrasion resistance and seawater resistance, but continuous exposure to strong acids or high-pressure sour gas requires case-specific chemical resistance verification. End products include unbonded flexible riser outer sheaths, subsea jumper covers, and gas lift line jackets.
Vestamid L2101F is fed to a 30 mm single-screw extruder with a 25:1 L/D barrel and a 2.8:1 compression ratio for monofilament spinning. A 3.0 wt% titanium dioxide masterbatch is added for opacity in light-coloured technical bristles, and 0.3 wt% internal lubricant is used to lower spinneret die swell. Melt temperature is maintained at 240 °C before the melt pump, which meters output to a multi-hole spinneret at constant volumetric throughput. The extrudate is quenched in a water bath at 40–60 °C, then drawn at a ratio of 3.8:1–4.2:1 between heated godets. Production logs from monofilament lines show that draw ratio above 4.5:1 triggers draw resonance in this grade, increasing diameter coefficient of variation from approximately 1.5 % to more than 4 %. Post-drawing annealing at 140–160 °C under controlled relaxation reduces frozen-in orientation and improves bending recovery. Tensile properties are checked under ASTM D638-14; the dry tensile modulus of the base resin is approximately 1400 MPa, and the converter monitors knot strength through a 45° cantilever bending fixture to control bristle stiffness. Weathering resistance for outdoor brush applications is tested under ISO 4892-2. If the finished article is intended for incidental food contact, the converter must validate the finished monofilament under FDA 21 CFR 177.1500 or EU 10/2011; raw resin supplier documentation alone does not constitute compliance. End products include paper machine cleaning brushes, abrasive filament brushes, paintbrush monofilaments with tapered tips, and industrial sweeping bristles.
In plant automation, the same extrusion grade is run in 4–16 mm OD pneumatic control lines with wall thickness between 1 mm and 2 mm. The resin is compounded with 2.0 wt% UV masterbatch and 0.3 wt% internal lubricant to reduce friction against push-in connector grippers. Extrusion uses a barrier screw with 3.0:1 compression ratio and melt temperature of 235–245 °C. The tubing is vacuum-sized and wound into coils. Dimensional stability in compressed air service is evaluated under ISO 14743, which addresses the interface between thermoplastic tubing and push-in connectors, including burst and vacuum-collapse behavior. Compared with PA6 or PA66, the lower moisture uptake of PA12 reduces dimensional change in humid plant air. Continuous exposure to saturated steam above 60 °C is not recommended because hydrolytic ageing reduces hoop stress capacity. Strong acids and zinc chloride solutions are known stress-cracking agents for PA12 and should be excluded from the operating environment. Products include coiled polyamide tubing for solenoid valve manifolds, robotic festoon systems, and pneumatic automation cabinets.
| Application | Standard | Measured property or test condition |
|---|---|---|
| Automotive air brake tubing | DIN 73378 | Dimensional series, burst verification at 4× working pressure |
| Automotive air brake tubing | SAE J844 | Heat ageing and cold impact per converter specification |
| Fuel vapour barrier tubing | SAE J2260 | Low-permeation fuel system tubing validation |
| Road vehicle cable jacket | ISO 6722-1 | Shrinkage at 150 °C for 15 min, abrasion resistance |
| Road vehicle cable jacket | LV 112-1 | OEM temperature class and chemical resistance |
| Unbonded flexible pipe sheath | API 17J | System-level qualification for flexible pipe |
| Long-term hydrostatic design | ISO 9080 | Hoop stress regression using water-internal pipe tests |
| Monofilament tensile properties | ASTM D638-14 | Tensile modulus and knot strength after drawing |
| Weathering resistance | ISO 4892-2 | Xenon-arc exposure, 1000 h |
| Pneumatic control tubing interface | ISO 14743 | Burst and vacuum-collapse with push-in connectors |
Competitive Evonik Vestamid L2101F Nylon 12 prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to admin@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8615365186327
Email: admin@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Evonik Vestamid L2101F is a polyamide 12 (PA12) extrusion compound based on laurolactam polymerization, supplied as a flexibilized high-viscosity grade. The designation places it in the Vestamid L-series of PA12 materials, but the F variant is formulated to reduce flexural modulus and increase strain capability relative to unmodified high-viscosity PA12 extrusion grades. It is normally specified for profiles, tubing, and cable jacketing that require low moisture uptake, resistance to many aliphatic hydrocarbons, and lower bending force than unplasticised PA12. The product is not a single-value material; drying state, processing thermal history, downstream calibration, and service conditioning modify the final property set. Consequently, the supplier’s current technical datasheet remains the controlling document for lot-specific values, and the figures cited in this technical overview are engineering comparison values rather than batch guarantees.
The compound is semicrystalline with a melting signal in the PA12 range and is commonly described in industrial literature as a plasticized or flexibilized PA12 tubing grade. Its use cases lie at the flexible end of the PA12 spectrum: compressed-air tubing, automotive fuel-vapour conduits, industrial pneumatic lines, and cable sheathing. It is not intended as a high-stiffness structural material; applications needing higher tensile modulus, lower elongation, or higher heat deflection are normally transferred to unplasticised PA12, glass-fibre-reinforced PA12, or other engineering polyamides. Under ISO 1043, the material is identified as PA12. Under ISO 1874-1, a complete designation should include the viscosity class, heat stabilization, impact-modification or plasticizer status as agreed between supplier and processor.
The primary distinction is the flexibilizer content. Unmodified high-viscosity PA12 grades for extrusion typically show a dry-as-molded tensile modulus in the range of 1,200–1,600 MPa when tested to ISO 527-2, whereas flexible PA12 formulations represented by L2101F are generally reported with tensile modulus in the range of 200–350 MPa. This difference is accompanied by a reduction in Shore D hardness from approximately 70–78 for unmodified PA12 to roughly 55–65 for the flexibilized grade when measured to ISO 868. Tensile stress at yield is correspondingly lower, often near 18–25 MPa, while nominal strain at break remains above 200 % for dry-as-molded specimens. The melting temperature of the PA12 crystal phase remains near 175–180 °C when measured by ISO 11357-3, but the flexibilizer reduces the Vicat softening temperature and increases creep under continuous load. The grade therefore cannot simply replace an unmodified PA12 in a part where stiffness or elevated-temperature dimensional stability is the limiting requirement.
Melt viscosity also differs. High-viscosity grades are used for tube extrusion because they provide a wider processing window and better melt strength during vacuum sizing. The L2101F designation is chosen when the same tube must be flexible enough to be pushed onto a barbed fitting at room temperature or to be routed around a tight radius without kinking. The plasticizer phase is not free: it can migrate under heat or fluid contact, and it lowers the modulus of the whole part. The comparison against unmodified PA12 is therefore not a simple preference decision; it is a trade between bending force, kink resistance, and long-term plasticizer retention.
Pre-drying is mandatory for lot-to-lot extrusion quality. A desiccant dryer with a dew point of −20 °C or lower, an air inlet temperature of 80 °C, and a residence time of 4–8 h is a common starting point for PA12 compounds; the target residual moisture before melt processing is usually 0.10 wt% or less by Karl Fischer titration. If residual moisture exceeds approximately 0.15 wt%, surface defects such as splay, irregular gloss, or pinholes can appear on thin-wall tubing, and melt viscosity can shift as a result of hydrolytic chain scission at elevated melt temperature. PA12 is less hygroscopic than PA6 or PA66, but it is not hydrolysis-proof. On single-screw extrusion lines, machines with 24:1 to 30:1 L/D and a barrier screw or a three-zone screw with a compression ratio of 2.5:1 to 3.0:1 are typical for tubing and profile work. Screen packs of 60/80/100 mesh, a die land ratio near 10:1 to 20:1, and vacuum calibration in the range of −0.2 bar g to −0.6 bar g are common industrial settings. Melt temperature measured at the adapter should generally remain below 240 °C for this plasticized grade; prolonged residence time above 250 °C can produce plate-out or odour from plasticizer volatilization, and repeated extrusion of regrind can accelerate that effect.
Start-up scrap rates on a given line often reflect moisture control more than raw-material variation. Batch-to-batch differences in plasticizer content, pellet size, or polymer viscosity can shift barrel pressure and diameter swell at the die. Processing technicians typically record melt pressure before the screen pack, extruder current draw, and haul-off speed at a fixed screw speed to identify lot drift before the tube reaches final cut length. When a new lot of Vestamid L2101F is introduced, a short purge with the previous lot or with a compatible PA12 purge compound is used to minimize gel specks. Published data for lot-to-lot variance in flexibilized PA12 is limited, so the line must be qualified empirically on the specific extruder and downstream calibration stack.
In a multi-layer air-brake tubing structure, an inner layer of flexibilized PA12 may be combined with a less plasticized outer layer or a polyamide 11 layer for higher stiffness and burst resistance. The coextrusion process becomes sensitive to viscosity mismatch because the flow distribution in the spiral mandrel or side-fed crosshead depends on the apparent viscosity of each melt stream at the die shear rate. Capillary rheometry at 220 °C and shear rates between 100 s⁻¹ and 1,000 s⁻¹ is used to compare the two melts; if the viscosities differ by more than a factor of about 1.5–2, interfacial instability or non-uniform layer thickness may appear. Melt temperature set points are usually kept within 200–240 °C for the plasticized layer to control plasticizer volatility while maintaining high enough adhesion to the adjacent layer.
Adhesion in finished tubing is evaluated after thermal conditioning because the initial weld can appear acceptable but weaken after plasticizer redistribution. For air-brake tubing, qualification commonly references ISO 7628 or SAE J844, with tests for burst pressure, cold impact at −40 °C, and resistance to zinc chloride or methanol exposure. The specific pass/fail values depend on tube diameter and wall thickness; applying a universal burst pressure to Vestamid L2101F without specifying the constructed layer ratio is invalid. A wall of flexibilized PA12 alone will usually show greater elongation and lower burst stress than an unplasticised PA12 or PA11 wall. In production, line speed is limited not only by melt viscosity but also by vacuum calibration stability of the softer inner material; higher plasticizer content can increase friction in the sizing tank and require wet calibrators with lower contact force.
The following comparison uses class-typical values for flexibilized PA12, unmodified PA12 extrusion grades, and unmodified PA11. These values are intended for material-selection screening, not as a substitute for supplier datasheets or production lot certificates.
| Property | Test method | Vestamid L2101F typical range | Unplasticised PA12 typical range | Unmodified PA11 typical range |
|---|---|---|---|---|
| Density | ISO 1183-1 | 1.01–1.03 g/cm³ | 1.01–1.02 g/cm³ | 1.03–1.05 g/cm³ |
| Tensile modulus | ISO 527-2 | 200–350 MPa | 1,200–1,600 MPa | 1,000–1,300 MPa |
| Tensile stress at yield | ISO 527-2 | 18–25 MPa | 40–50 MPa | 35–45 MPa |
| Nominal strain at break | ISO 527-2 | >200 % | >200 % | >200 % |
| Shore D hardness | ISO 868 | 55–65 | 70–78 | 65–72 |
| Melting temperature | ISO 11357-3 | 175–180 °C | 175–180 °C | 185–190 °C |
The most important difference in the table is the tensile modulus gap: the flexibilized grade can be 70–85 % lower in stiffness than an unplasticised PA12. That gap is what permits tight-radius installation and push-fit assembly; it also reduces the operating pressure rating of an unreinforced tube. For fluid-conveyance applications, the design wall thickness must be recalculated rather than inherited from an unplasticised PA12 design. PA11, while also flexible relative to PA6 and PA66, is typically stiffer and higher melting than plasticized PA12, which affects the choice for compact under-hood routing.
Plasticizer permanence is a threshold variable, not a secondary property. The lower modulus of Vestamid L2101F arises partly from the plasticizer phase; therefore any process or service condition that extracts or volatilizes the plasticizer will shift the material toward higher stiffness, lower elongation, and potentially worse low-temperature ductility. ISO 177 or equivalent mass-loss methods can be used to compare plasticizer migration, but the measured value is meaningful only when specimen thickness, air-change rate, and ageing temperature are specified. A 10 °C rise in continuous service temperature can increase the plasticizer-loss rate by an Arrhenius-type dependence; a single flash value at 100 °C cannot predict long-term retention at 80 °C without time-temperature superposition.
Fluid contact is more aggressive than dry heat in some vehicle systems. ISO 175 immersion tests can be used to rank diesel, biodiesel, mineral oil, coolant, brake fluid, or zinc chloride exposure. Typical observations for plasticized PA12 are higher mass uptake and greater elongation change than unplasticised PA12 in the same fluid, though the PA12 base still offers useful resistance to many aliphatic hydrocarbons. Methanol and zinc chloride can stress-crack polyamide tubing; qualification of finished lines should include the relevant automotive stress-cracking test rather than relying on simple tensile retention. Low-temperature impact after fluid ageing is measured on notched specimens by ISO 179-1/1eA or on finished tubing by cold-impact testing at −40 °C. In multi-layer designs, plasticizer from the L2101F layer can diffuse into adjacent layers over time, softening the outer layer and changing the apparent cold-impact response; this is the reason that aged data are required before release.
Material suppliers may list regulatory conformity for specific grades, but the status depends on colorants, stabilizers, plasticizers, and production aids present in the lot. Standard declarations for polyamide 12 often include 21 CFR 177.1500 for certain food-contact uses when the grade is formulated accordingly, and European food-contact compliance under EU 10/2011 requires migration testing on the finished article. Automotive fluid-conveyance applications are qualified against application standards such as SAE J844 for air-brake tubing, ISO 7628 for thermoplastic tubing in air-braking systems, and ISO 13775 for fuel-tubing performance. Flammability is generally reported as UL 94 HB or by FMVSS 302 for occupant-compartment materials, but the rating is thickness-dependent. REACH and RoHS declarations are not automatic for all formulation variants; the raw-material supplier must provide the current statement for the specific product code and production site.
| Application context | Typical standard | Scope of qualification |
|---|---|---|
| Air-brake tubing | ISO 7628 / SAE J844 | Burst pressure, low-temperature impact, fluid resistance |
| Fuel vapour or fuel tubing | ISO 13775 / SAE J2260 | Barrier performance, fuel ageing, tensile retention |
| Material designatory data | ISO 1874-1 | PA12 classification and modification status |
| Density and mechanical quality control | ISO 1183-1 / ISO 527-2 | Incoming resin verification and dry-as-molded property checks |
| Food-contact status, where applicable | 21 CFR 177.1500 | US FDA polyamide article status for formulated grades |
Because plasticizer concentration and thermal history control the final modulus of Vestamid L2101F, a single datasheet value cannot predict all component performance. Published data for multi-layer lines combining Vestamid L2101F with less-flexible layer materials is limited, and production-scale qualification on the intended line is required. The choice of this grade should therefore be linked to a defined operating envelope: drying procedure, melt temperature profile, layer ratio, calibration method, ageing fluid, and end-use test standard.
