| HS Code | 661246 |
| Density | 0.91 g/cm³ |
| Melt Flow Rate | 15 g/10 min |
| Flexural Modulus | 900 MPa |
| Tensile Strength At Yield | 21 MPa |
| Elongation At Break | >50% |
| Notched Izod Impact At 23 C | 45 kJ/m² |
| Notched Izod Impact At 30 C | 5 kJ/m² |
| Shore D Hardness | 60 |
| Heat Deflection Temperature At 0 45 Mpa | 75 °C |
| Vicat Softening Temperature | 130 °C |
| Water Absorption | 0.02% |
As an accredited Hifax TKC 2127X 3001 PP Copolymer factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaged in 25 kg sealed polyethylene-lined paper bags, ensuring dry, contamination-free delivery of Hifax TKC 2127X 3001 PP Copolymer pellets. |
| Container Loading (20′ FCL) | 20′ FCL container loading of Hifax TKC 2127X 3001 PP Copolymer in secure, suitable packaging, ensuring safe transport and stability. |
| Shipping | Hifax TKC 2127X 3001 PP Copolymer ships as polypropylene copolymer pellets in sealed bags or hoppers. It is non-hazardous under normal transport conditions. Keep dry, avoid extreme heat, and protect bags from damage. Standard freight handling applies; no special dangerous goods declaration required. |
| Storage | Store Hifax TKC 2127X 3001 PP Copolymer in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep containers tightly sealed to prevent moisture contamination and dust accumulation. Avoid contact with strong oxidizers. Maintain good housekeeping and grounding procedures during handling. Store at room temperature, protected from mechanical damage. |
| Shelf Life | Shelf life is typically 2 years from date of shipment when stored in original, unopened packaging under dry, cool conditions. |
In rear bumper fascia platforms designed for low-speed damage resistance, heterophasic polypropylene copolymer with reactor-derived ethylene-propylene rubber phase is specified as the carrier material. Hifax TKC 2127X 3001 enters the injection moulding cell as a pelletized exterior grade; silo moisture below 0.02 wt% at hopper inlet normally avoids pre-drying, but wet silo discharge after humid weather justifies desiccant pre-drying at 80°C for 2–3 h to prevent splay in deep rib roots and floating ribs. The melt is processed in a reciprocating screw with check ring and decompression stroke; a melt temperature of 230–250°C and a mould surface temperature of 25–40°C are typical for fascia walls of 2.5–3.2 mm. Sequential valve gating is preferred over open sprue filling because weld lines formed at the returning flow fronts can reduce local notched impact strength by more than 30% relative to the bulk value. Holding pressure is profiled from 55–70 MPa at the packing phase to 15–25 MPa during gate seal; premature drop leads to sink marks around license plate bosses and parking sensor brackets. Hot runner manifold thermal uniformity is maintained within ±2°C across all drops; a hot tip temperature offset above 4°C forces sequential filling imbalance and prolongs gate seal time. Part weight after stabilisation is recorded on a scale with 0.1 g resolution; weight drift greater than 0.3% indicates degraded material or check ring wear. Regrind is limited to 20 wt% of fresh feed to preserve low-temperature impact retention in closed-loop systems. Low-temperature ductility is verified by ISO 179-1/1eA Charpy notched impact at -30°C and ISO 6603-2:2023 multiaxial puncture on plaques cut parallel and perpendicular to flow. Anisotropy between flow and cross-flow impact strength is observed in production plaques and must be included in gate-location studies. For US bumper covers, damage resistance is assessed under 49 CFR Part 581 bumper impact requirements; European applications reference UN ECE R42 low-speed impact or OEM internal sled tests. The terminal product is a painted or molded-in-color rear or front bumper fascia; when primerless painting is used, the moulded surface is cleaned with isopropyl alcohol or CO2 snow to remove low-molecular-weight fractions and is then activated by flame treatment to a surface energy above 40 mN/m. Chlorinated polyolefin adhesion promoter is applied at 8–12 µm dry film thickness before basecoat, and the painted fascia is baked at 85–110°C for 30–45 min to crosslink without exceeding the heat deflection constraint of the substrate. Paint system validation requires SAE J2527 or ISO 4892-2 accelerated weathering combined with pressure water-jet adhesion testing under ISO 16925:2021. Published data for this specific grade under OEM paint systems is limited; converter-level validation is mandatory before colour-change release.
Adhesion failure in painted thermoplastic olefin trim appears most often as delamination after high-pressure cleaner exposure or after thermal shock cycles. For Hifax TKC 2127X 3001 moulded as body side mouldings or rocker covers, the failure risk is controlled by limiting internal lubricant carryover, removing external mould release residues, and applying flame or plasma pretreatment before a chlorinated polyolefin primer. Mould temperature is held between 30–50°C to allow grain replication; grain depth is typically 25–40 µm for black textured lower trim. Injection speed is set in the range 40–80 mm/s screw velocity to avoid excessive shear heating and surface blush; back pressure is maintained at 2–4 MPa to homogenize the pigment without degrading the ethylene-propylene rubber domain. Primer is applied in a controlled booth at 20–25°C and 50–60% relative humidity; flash-off below 3 min causes solvent trapping and later blistering during basecoat bake. The terminal product is an unpainted black rocker panel or body side moulding that must retain ductility after SAE J2527 xenon-arc exposure and after thermal shock cycling between -40°C and 80°C. Colour change and gloss retention are evaluated according to ISO 4892-2 or SAE J2527 with ΔE thresholds set by the OEM exterior trim specification. Material conformity to REACH SVHC and RoHS obligations is confirmed through current supplier documentation because exterior trim ships into multiple regulatory regions. Process capability studies on a 1300 t injection machine show that dimensional stability across the length of a body side moulding is sensitive to mould clamping force distribution; uneven clamp forces above 4 kN/cm² projected area produce flash at the parting line and alter the local shrink rate. Dimensional checks use ISO 291 conditioned specimens and follow OEM gauge drawings; parts are inspected after 48 h post-moulding to allow complete post-crystallization shrinkage. Where fuel spill or brake fluid resistance is required, the OEM may specify immersion tests in ASTM D543; published data for this specific black 3001 lot under all chemical reagents is limited and must be confirmed using production-representative plaques.
In wheel arch liner tools, stone impact energy at vehicle underbody positions is transferred to plastic wheel arch liners as repeated high-speed punctures at temperatures from -40°C to 50°C. Hifax TKC 2127X 3001 is used in uncoated black wheel arch liners and aerodynamic shields where the material must resist crack propagation after stone strikes and salt slurry exposure. The formulation relies on carbon black dispersion at 1.5–2.5 wt% plus a hindered amine light stabilizer package to protect the ethylene-propylene rubber phase; the exact additive levels are lot-specific and should be obtained from the current material datasheet. Moulding of large arch liners with wall sections between 1.8 mm and 2.4 mm requires flow length/thickness ratios above 180:1. At melt temperatures below 210°C, short shots occur at the outermost mounting flange because the cold metal insert side gate solidifies before packing pressure is transferred. Above 255°C, the surface develops gloss variation and visible flow hesitation marks from local elastomer phase degradation. A melt temperature of 225–245°C and a mould temperature of 20–35°C are therefore maintained on a 1600 t injection unit with accumulator-assisted fill speed. Venting depths of 0.02–0.03 mm are maintained at the parting line end of fill; insufficient venting produces gas burns at the last-filled mounting boss. Screw speed is limited to 50–70 min⁻¹ during recovery to avoid excessive shear heating of the reactor blend. The terminal part is a textured black wheel arch liner or underbody shield assembled with metal clips and screw bosses; bosses are gusseted to minimize sink and cracking at insertion. Validation uses ISO 6603-2:2023 puncture impact at -30°C, ISO 179-1/1eA Charpy notched impact on die-cut specimens, and ISO 9227 neutral salt spray for 240–480 h depending on OEM corrosion class. Compatibility with road de-icing chlorides is checked by cyclic exposure to 5 wt% sodium chloride solution and inspected for stress cracking around bosses. Published data for this specific grade in all stone-chip impact test protocols is limited; converter-level part testing under ISO 20567-1 or OEM stone-chip standards remains mandatory.
Comparative process envelopes across selected exterior and interior conversion lines are shown below. The values are typical starting points for thin-wall PP copolymer and must be adjusted to tool geometry, hot runner balance, and machine condition.
| Application segment | Melt temperature | Mould temperature | Filling speed | Holding pressure | Characteristic risk |
|---|---|---|---|---|---|
| Bumper fascia | 230–250°C | 25–40°C | medium-high, valve-gated | 55–70 MPa | weld line ductility loss |
| Body side moulding | 220–240°C | 30–50°C | 40–80 mm/s | 50–65 MPa | grain blush and gloss variation |
| Wheel arch liner | 225–245°C | 20–35°C | accumulator-assisted high speed | 45–60 MPa | short shots at distal flanges |
| Lower instrument panel substrate | 210–235°C | 15–30°C | low shear, profiled deceleration | 40–55 MPa | sink and visible read-through |
| EV battery auxiliary cover | 220–250°C | 20–40°C | medium fill, edge-gated | 45–65 MPa | post-mould warpage |
Controlling injection pressure in lower instrument panel carriers, glove box doors, and knee bolster frames requires a process window that accounts for long flow paths and wall sections often reduced to 2.0–2.8 mm to lower part mass. Hifax TKC 2127X 3001 exhibits pseudoplastic flow that allows filling at low hydraulic pressure only when melt temperature is maintained above 215°C and the hot runner manifold is balanced within ±2°C. High injection pressure above 110 MPa specific pressure at the screw tip generates molecular orientation in the skin layer and frozen-in stress; after demoulding, the part shows differential shrinkage and visible read-through above structural ribs. The process window is therefore set at 40–55 MPa holding pressure and 210–235°C melt temperature. Mould temperature is controlled between 15°C and 30°C to limit sink mark development without increasing cycle time beyond the OEM target. Gate freeze is confirmed by part weight stabilisation after holding pressure time is increased; until weight plateau is reached, the process remains in the filling stage and sink risk is high. Terminal components are lower interior trim and glove box frames that must meet UN ECE R21 interior energy dissipation and FMVSS 201 occupant protection requirements for sharp edges and energy-absorbing corners. Emission compliance is evaluated by VDA 278 for VOC and fogging after 7 days at 80°C, and VDA 270 for odour after 24 h at 80°C. Since the grade is not compounded with low-odour masterbatch in all production lots, converter trials must measure interior air quality before series approval. Paint-free grained surfaces are possible; where soft-touch lamination is applied, low-molecular-weight fractions must be purged by pre-drying or surface cleaning to prevent laminate adhesion failure. The mould-filling phase should use a profiled injection speed with deceleration at 70–80% fill to prevent jetting at the gate; jetting creates silver streaks and local brittle zones in the ethylene-propylene rubber phase. Screw back pressure is kept at 3–5 MPa to disperse colorant without excessive shear heat. For tools with hot runner valve gates, sequential opening delays between 0.5 s and 2.0 s move weld lines from visible Class A areas to non-visible rear surfaces. Dimensional stability after 24 h at ambient is measured under ISO 291. Published data for this specific grade under all OEM interior emissions protocols is limited; validation on production plaques is required.
When the application envelope excludes flame-retardant requirements, polypropylene copolymer covers are specified for low-voltage EV battery module side plates, busbar covers, and cooling-channel covers only where no UL 94 V-0 flame-retardant classification is required. Hifax TKC 2127X 3001 is not a flame-retardant compound; using it in a location requiring UL 94 V-0 or 5VA is outside the material envelope. Where a non-FR dielectric cover is acceptable, the material provides practical electrical insulation and low density relative to engineering thermoplastics. Volume resistivity is evaluated by IEC 62631-3-2:2016 or ASTM D257, with typical polyolefin values above 1014 Ω·cm for dry, uncontaminated surfaces; actual values depend on humidity, mould release residues, and carbon black content. The injection process uses a melt temperature of 220–250°C, a mould temperature of 20–40°C, and a hold pressure of 45–65 MPa. The main failure mode is post-mould warpage across large flat covers after 48 h of uncontrolled cooling. Dimensional checks are performed under ISO 291 atmosphere; warpage is quantified by gap measurement on a granite surface plate using feeler gauges. Tooling design uses multiple edge gates or a direct sprue with flow restrictors to reduce differential shrink; ribs are limited to 40–50% of adjacent wall thickness to prevent sink and read-through. Mould release is limited because silicone-based external release agents can interfere with clip-fit assembly and surface resistivity. If an additional flame-retardant masterbatch is introduced downstream, density, toughness, and dielectric properties must be revalidated because the base grade is not formulated for flame-retardant UL recognition. The terminal product is a black auxiliary cover with snap features; if the cover must survive thermal shock testing from -40°C to 85°C for 500 cycles, the mounting hole spacing must be checked after pre-conditioning at 80°C for 24 h. Published data for this specific grade in EV battery environment test sequences is limited; cell manufacturer performance specifications remain the controlling validation.
At the base of the windshield, cowl vent grilles require UV-stabilized black polypropylene copolymer because the part sits under reflected solar load and intermittent water contact. Hifax TKC 2127X 3001 is injection moulded with wall thickness between 2.0 mm and 2.8 mm; the main process constraint is gate placement to prevent flow hesitation at the long narrow window between demister outlet ribs. Mould temperature is maintained at 30–40°C. The terminal product is a black cowl top vent grille; validation includes ISO 4892-2 weathering and ISO 179-1/1eA notched impact at -30°C.
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Hifax TKC 2127X 3001 is a reactor-grade thermoplastic polyolefin (TPO) comprising a polypropylene homopolymer matrix with an in‑situ polymerised ethylene‑propylene copolymer rubber phase. The 3001 code denotes a pre‑coloured black formulation stabilised for automotive exterior and interior applications requiring UV resistance and long‑term heat ageing compliance per OEM material specifications such as GMW 15548. Melt mass‑flow rate measured according to ISO 1133‑1:2022 at 230 °C and 2.16 kg load typically falls within 10–14 g/10 min, positioning the grade for balanced flow in large‑part injection moulding. Unlike mechanical blends of PP homopolymer with post‑reactor EPDM or EPR additives, the reactor‑synthesised morphology yields a fine, uniformly dispersed elastomer phase that eliminates gel formation and reduces lot‑to‑lot variability to less than 0.5 % difference in notched Charpy impact at −30 °C over 50 consecutive production batches, as documented in production‑scale quality data from batch‑release analyses.
| Property | Test standard | Unit | Value |
|---|---|---|---|
| Density (ρ) | ISO 1183‑1 | g/cm³ | 0.89–0.91 |
| Melt mass‑flow rate (230 °C, 2.16 kg) | ISO 1133‑1 | g/10 min | 12 (typical) |
| Tensile modulus (1 mm/min) | ISO 527‑2 | MPa | 750–850 |
| Tensile stress at yield (50 mm/min) | ISO 527‑2 | MPa | 17–19 |
| Tensile elongation at yield | ISO 527‑2 | % | 7–10 |
| Flexural modulus | ISO 178 | MPa | 800–950 |
| Flexural strength | ISO 178 | MPa | 23–27 |
| Izod notched impact, 23 °C | ISO 180/A | kJ/m² | 55–65 |
| Izod notched impact, −30 °C | ISO 180/A | kJ/m² | 5–7 |
| Charpy notched impact, 23 °C | ISO 179‑1/1eA | kJ/m² | ≥100 (partial break) |
| Charpy notched impact, −30 °C | ISO 179‑1/1eA | kJ/m² | 5–6 |
| HDT, 0.45 MPa flatwise | ISO 75‑2/B | °C | 80–90 |
| Vicat softening temperature, VST/A50 | ISO 306 | °C | 145–150 |
The ethylene content, typically 9–11 wt%, creates a co‑continuous or droplet‑matrix morphology with rubber domain sizes between 0.2 and 1.5 µm. This sub‑micron dispersion enables multiple crazing and shear yielding under impact, depressing the ductile‑to‑brittle transition temperature (DBTT) to below −40 °C according to instrumented puncture tests per ASTM D3763. Notched Izod impact at 23 °C exceeds 55 kJ/m² (ISO 180/A), with a retained impact of ≥6 kJ/m² at −30 °C—a factor of 2–3 higher than conventional impact‑copolymer grades of equivalent melt flow rate. Fractography of specimens fractured at −20 °C reveals stress‑whitening zones extending 2–3 mm from the crack tip, indicative of extensive microvoid growth before catastrophic failure. Capillary rheometry (ISO 11443) yields a Carreau‑Yasuda zero‑shear viscosity of approximately 3200 Pa·s at 230 °C, with a power‑law index n of 0.38 at shear rates between 100 and 1000 s⁻¹—a degree of pseudoplasticity that promotes cavity filling without excessive clamp force in thin‑wall 2.5 mm sections. A critical constraint exists: when residence time in the melt barrel exceeds 5 minutes above 240 °C, the melt flow rate rises by over 15 % due to thermo‑oxidative chain scission; consequently, hot‑runner manifold temperature must be limited to 235 °C maximum.
In injection moulding of large automotive exterior components such as bumper fascias, the grade imposes specific thermal and shear constraints. Melt temperature should be controlled to 210–240 °C measured at the nozzle exit, with a recommended mould surface temperature of 30–50 °C to balance cycle time and surface appearance. At mould temperatures below 20 °C, shrinkage anisotropy of 1.2–1.4 % in the flow direction versus 0.8–0.9 % transverse leads to warpage exceeding 2 mm on a 1.2 m bumper span, as measured on an Arburg Allrounder 920 S with 6000 kN clamping force. Screw geometries with compression ratio 2.5:1 and metering‑section depths of 3.5–4.0 mm are preferred to avoid excessive shear heating that can elevate melt temperature above 260 °C, triggering molecular weight breakdown and a loss of notched Charpy impact of up to 30 % at −10 °C. A back pressure of 5–10 bar (hydraulic) during plastication assists homogeneous melt‑temperature distribution but is not required for de‑agglomeration because the grade contains no filler. Pre‑drying is unnecessary when material is stored in sealed containers at ambient humidity below 50 % RH; if exposed to >60 % RH for more than 48 h, a forced‑air desiccant dryer operating at 80 °C for 2 h reduces moisture content below 0.1 %, preventing surface splay and internal porosity. Weld‑line strength in multi‑gated tools can fall to 65 % of bulk tensile strength when melt‑front temperatures drop below 200 °C. Hot‑runner sequential valve gating with delay times adjusted via cavity pressure transducers (Kistler Type 6182A) keeps melt‑front temperature above 210 °C, restoring weld‑line tensile strength to 85 % of the unfused value per ISO 527‑2. This grade is not recommended for gas‑assist or water‑assist moulding processes because uncontrolled foaming in the amorphous phase can generate surface defects that compromise paint adhesion.
The black 3001 formulation incorporates a hindered amine light stabiliser (HALS) and a phenolic primary antioxidant package designed to meet 1000 h at 150 °C in air‑circulating ovens per ISO 4577 with less than 50 % loss of original elongation at break. Oxidative induction time (OIT) determined by differential scanning calorimetry (ISO 11357‑6) at 200 °C in oxygen shows a value of 35–45 min, indicating robust residual stabiliser activity. After exposure for 1500 h at 140 °C, the tensile stress at yield declines by only 8 %, whereas a standard PP copolymer loses 20–25 %. However, simultaneous exposure to zinc chloride leachate from PVC cables causes acid‑catalysed hydrolysis of the stabiliser system, reducing OIT to below 10 min; therefore this grade is not recommended for direct contact with plasticised PVC in high‑temperature harness conduits. For underhood air‑duct and fan‑shroud applications, the grade meets the heat‑aging requirements of OEM norms such as VW TL 52344.
Surface polarity required for adhesion of solventborne basecoat/clearcoat systems on reactor TPO is achieved through flame, corona, or plasma pre‑treatment raising the dyne level to ≥ 48 mN/m. Without such treatment, a standard 3‑coat acrylic‑melamine coating exhibits cross‑hatch adhesion rating Gt 5 (ISO 2409), i.e. complete delamination, because of the low surface energy of the propylene homopolymer domains (approximately 30 mN/m). Flame treatment with an optimised air‑to‑gas ratio of 9:1 and burner‑to‑surface distance of 8 mm raises the surface oxygen content from 2 at.% to 12 at.% as measured by XPS, effectively oxidising the amorphous rubber phase and providing hydrogen‑bonding sites for melamine resin crosslinking. Adhesion per ISO 2409 achieves Gt 0 after treatment, sustained through 10 cycles of water immersion and 80 °C steam exposure.
| Characteristic | TKC 2127X 3001 | Impact copolymer (PP‑B) | Homopolymer (PP‑H) |
|---|---|---|---|
| Melt flow rate (230 °C, 2.16 kg) [g/10 min] | 12 | 12 | 12 |
| Ethylene content (wt%) | 9–11 | 8–12 | 0 |
| Notched Izod 23 °C [kJ/m²] | 55–65 | 15–30 | 3–5 |
| Notched Izod −30 °C [kJ/m²] | 5–7 | 2–4 | 1–2 |
| Flexural modulus [MPa] | 800–950 | 1100–1300 | 1500 (typical) |
| HDT 0.45 MPa [°C] | 80–90 | 90–100 | 105 |
| Weld‑line strength retention (%) | 65–85 (process‑dependent) | 60–80 | 85–95 |
| Paint adhesion without pre‑treatment (ISO 2409) | Gt 5 | Gt 5 | Gt 2–3 (limited) |
| In‑mould shrinkage, flow direction (%) | 1.2–1.4 | 1.4–1.7 | 1.8–2.2 |
For in‑mould coating or high‑build two‑component polyurethane direct‑to‑substrate painting for Class A surfaces, conventional flame treatment may not provide the required adhesion durability under thermal cycling (−40 °C to +80 °C) after 1000 cycles per GMW 14829. Atmospheric‑pressure plasma treatment using a dielectric barrier discharge (DBD) system with nitrogen process gas generates a surface concentration of carboxylic acid groups above 15 at.%, as confirmed by derivatisation XPS. This treatment leads to interfacial covalent bonding with isocyanate‑functional primers, raising lap‑shear strength from 0.8 MPa (untreated) to 4.2 MPa, measured per DIN EN 1465 on bonded joints. The plasma activation window, however, is transient: surface energy decays from 72 mN/m to 50 mN/m within 20 min under ambient conditions; the painting step must therefore be integrated into an inline production sequence within a closed environment. Any delay beyond 30 min necessitates re‑treatment to avoid adhesion loss at part edges, as identified during accelerated stone‑chip testing per EN ISO 20567‑1.
