| HS Code | 877702 |
| Talc Content | 20% |
| Density | 1.05 g/cm³ |
| Melt Flow Rate 230 C 2 16 Kg | 8 g/10 min |
| Tensile Stress At Yield | 22 MPa |
| Elongation At Break | 50% |
| Flexural Modulus | 2100 MPa |
| Izod Notched Impact 23 C | 45 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 115 °C |
| Vicat Softening Temperature B50 | 140 °C |
| Melting Point | 165 °C |
As an accredited Seculene PPR 1040 TV20 S0 PP Copolymer factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Seculene PPR 1040 TV20 S0 PP Copolymer is supplied in 25 kg sealed bags, ensuring safe handling and product integrity. |
| Container Loading (20′ FCL) | 20′ FCL: Seculene PPR 1040 TV20 S0 loaded in 25kg bags on pallets, shrink-wrapped, secured for safe transport. |
| Shipping | Seculene PPR 1040 TV20 S0 polypropylene copolymer ships as non-dangerous granules in sealed bags or bulk containers. Keep dry, avoid direct sunlight and temperatures above 40°C. Protect from physical damage and moisture. No special hazard labeling required, but handle with standard industrial hygiene practices. |
| Storage | Store Seculene PPR 1040 TV20 S0 PP Copolymer in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep original containers tightly sealed to prevent moisture contamination and physical damage. Avoid contact with strong oxidizing agents. Maintain ambient temperatures and protect pellets from dust, static buildup, and mechanical impact. |
| Shelf Life | Store in original packaging, dry and cool, away from direct sunlight and heat. Typical shelf life is two years from manufacture date. |
Seculene PPR 1040 TV20 S0 is processed as a 20 wt% talc-reinforced polypropylene random copolymer for non-pressure drainage, venting and cable-protection profiles. The TV20 designation is read here as nominal 20 wt% talc; if the supplier lot card reports different ash content, the processing envelope and shrinkage compensation must be recalculated before tool release. For extruded profiles, the grade is selected where unfilled PP-R shows excessive thermal expansion or insufficient ring stiffness after vacuum calibration. The processing envelope on a 45–75 mm single-screw extruder with L/D 30:1 and a two-stage mixing section is limited at the upper end by random copolymer melt stability. Barrel zone setpoints are typically 195–210 °C in the feed section, 220–230 °C in the compression section, 230–235 °C in the metering section, and 230–240 °C at the adapter and die. Melt temperature measured at the die entry should not exceed 240 °C for residence times above 5 min; plate-out on the die lip and brown specks are field-observed above this threshold. Pre-drying at 80 °C for 2 h in a desiccant hopper is required when sacks have been stored at RH >60 %, because talc surface moisture produces splay and surface roughness. Extruded profiles are sized in a vacuum calibration tank with water at 20–40 °C, then cooled in a second tank at 15–25 °C. Ring stiffness is evaluated according to ISO 9969; typical soil and waste discharge pipes require class SN4 or SN8 depending on wall thickness. Dimensional compliance follows EN 1451-1 for polypropylene soil and waste discharge profiles. This talc-filled random copolymer is not automatically qualified for hydrostatic pressure piping under ISO 15874; long-term creep rupture data at 70 °C and 95 °C for the talc-filled matrix are needed before pressure classification can be assigned.
Socket fusion welding of talc-filled PP-R copolymer fittings introduces a joint-strength variable that is absent in unfilled PP-R. The talc platelets raise melt viscosity and slow molecular diffusion across the weld plane. In production, the heated-tool temperature is maintained at 210–230 °C, and a minimum bead width of 0.5 mm is required following interfacial pressure application. Heating and cooling times should be derived from DVS 2207-1 for polypropylene, but actual heating time for a 20 mm socket is usually 5–7 s, with cooling under axial pressure for 30–60 s. Moulding of manifolds and valve bodies is carried out on injection moulding machines with clamp force not less than 3.0 kN/cm² of projected area. Melt temperature at the nozzle is set between 220 °C and 250 °C. The mould wall is held at 40–50 °C to balance crystallinity and shrinkage. For multi-cavity tools, sequential valve-gate opening reduces flow-front collisions and weld-line depth in boss regions. Pressure-bearing fittings under ISO 15874-3 require long-term hydrostatic strength validation; if the talc-filled grade has no published hydrostatic design stress at 70 °C, published data for this specific configuration is limited and pressure classification should not be assumed. Non-pressure drainage fittings are evaluated under EN 1451-1. Failure modes observed on production lines include incomplete fusion at the socket base when axial insertion is delayed, and brittleness at the weld line when talc orientation is high in the outer skin.
Because talc platelet orientation in extruded sheet controls anisotropic shrinkage, deep-draw automotive trunk side trim and load-floor substrates made from 20 wt% talc-reinforced PP-R are typically restricted to draw ratios below 2.5:1. Sheet extrusion on a 90 mm single-screw line with a barrier screw and melt pump uses die temperatures of 230–240 °C. The sheet is polished on a three-roll stack at 60–80 °C to reduce surface marks and lock in talc orientation. Thermoforming is performed at sheet surface temperatures of 150–170 °C. At these temperatures, the talc network reduces sheet sag compared with unfilled PP-R, but it also reduces ultimate extensibility. Plug-assist speed must be limited to avoid localized thinning below 70 % of initial sheet thickness. Flexural modulus of comparable 20 wt% talc-filled PP copolymers measured under ISO 178 commonly falls in the 2.0–2.5 GPa range; the exact value must be confirmed from the supplier lot card. Notched Charpy impact at −20 °C under ISO 179-1/1eA is below unfilled random copolymer; this is the limiting design input for luggage-area side trims subject to passenger cargo impact. Low-emission requirements are validated separately with VDA 278 and VDA 270, and no claim is made for the S0 designation until the supplier provides batch-specific emissions data. Post-forming springback is controlled by cooling fixtures at 20–30 °C for thin-wall parts.
The limiting variable in washing-machine base frames and dishwasher structural housings is not flexural stiffness but knit-line embrittlement and anisotropic shrinkage. 20 wt% talc-reinforced PP-R has a flexural modulus above 2.0 GPa under ISO 178, which permits nominal wall thickness reduction from 3.5 mm to 2.5 mm in ribbed base frames. However, wall thickness below 2.5 mm elevates injection pressure to 120–150 MPa and shear rates above 1000 s−1, causing talc orientation gradients and warpage. Mould filling is performed with sequential valve gates and a melt temperature of 230–250 °C. The mould temperature is held at 30–50 °C; lower mould temperatures reduce cycle time but intensify skin-core shrinkage mismatch. Glow wire testing under IEC 60695-2-12 at 650 °C is usually required for unattended appliance structural parts; the S0 grade contains no flame-retardant package, so the typical classification of comparable 20 wt% talc-filled PP is UL 94 HB only. Impact performance is evaluated under ISO 6603-2 at 23 °C and −20 °C; field failures in base frames frequently originate at sharp ribs with radius below 0.8 mm. Mould shrinkage is measured under ISO 294-4; flow-direction shrinkage is typically 0.4–0.6 %, while transverse-direction shrinkage is typically 0.7–1.0 %. This difference must be compensated by independent cavity scaling, not by uniform shrinkage factors.
Outdoor meter boxes and electrical distribution enclosures moulded from 20 wt% talc-reinforced PP-R require a thermal cycling assessment before tool approval. The coefficient of linear thermal expansion under ISO 11359-2 is reduced to approximately 60–80 × 10−6 K−1 in the flow direction, but talc orientation makes the transverse value higher. Large flat covers with wall thickness 3–4 mm show bowing above 1 mm after cycling from −20 °C to 60 °C when the mould is designed with a uniform shrinkage factor. Production tools should use differential cavity scaling and cooling circuits that maintain a temperature difference below 10 °C across the cavity. Outdoor compatibility is evaluated under UL 746C; the S0 designation is not assumed to include a UV stabilization package, so carbon black or a UV stabilizer masterbatch must be validated separately. Impact toughness at low temperature is measured under ISO 179-1/1eA at −20 °C; service failures in cold climates are associated with gussets and screw bosses rather than flat panels. Enclosure performance follows IEC 62208 for empty enclosures and IEC 60529 for ingress protection. Comparative tracking index under IEC 60112 for comparable talc-filled PP is normally above 400 V, but batch-specific testing is required for insulating parts.
| Property | Standard | Common test condition |
|---|---|---|
| Glow wire flammability | IEC 60695-2-12 | 650 °C or 750 °C per product class |
| Comparative tracking index | IEC 60112 | ≥ 400 V for insulating barriers |
| Low-temperature notched impact | ISO 179-1/1eA | −20 °C, Type 1A notch |
| Outdoor weathering | UL 746C | f1 rating if outdoor exposure |
Melt-pressure fluctuation at the gate, rather than melt temperature alone, controls the flatness of injection-moulded logistics pallet decks manufactured from 20 wt% talc-reinforced PP-R. The material is selected for reusable boxes and pallet decks because flexural modulus under ISO 178 is sufficiently high to reduce creep deflection in unsupported spans. Thick sections above 6 mm are cooled with extended hold time; talc increases thermal conductivity compared with unfilled PP, but the skin freezes rapidly and can trap centre-line voids if holding pressure is released below 50 MPa. Injection moulding of pallet decks uses sequential valve gates to avoid flow-front hesitation and visible knit lines. Melt temperature is set between 220 °C and 250 °C, and mould temperature is held at 30–45 °C. Load-bearing performance is tested under ISO 8611-1 for flat pallet handling and racking. The trade-off is low-temperature impact; 20 wt% talc-filled PP-R typically shows notched Charpy values lower than unfilled block copolymer PP at −20 °C under ISO 179-1/1eA, so corner designs require rib radii above 1.0 mm and removal of sharp tool marks. In closed-loop logistics use, ultraviolet exposure is minimal and the absence of a UV package in the S0 designation is not a primary constraint, but warehouse racking at −10 °C and below requires impact validation before fleet deployment.
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Seculene PPR 1040 TV20 S0 PP Copolymer is a talc-reinforced polypropylene random copolymer grade intended for injection-moulded structural components. The model designation separates it from unfilled PP-R pipe grades and from talc-filled PP homopolymer compounds; the suffix TV20 identifies a nominal 20% by weight talc loading, while S0 designates the stabilizer and additive package assigned by the manufacturer. Exact lot-specific values remain subject to the supplier certificate of analysis. Published data for this specific configuration is limited, but the general class of 20% talc-filled PP random copolymers is well characterized under ISO and ASTM methods. This grade is positioned for parts requiring controlled stiffness, reduced shrinkage, and retained low-temperature ductility rather than for hot-water pressure piping or thin-wall packaging.
The talc particle size distribution and top cut influence property development more than the simple filler weight fraction. For 20% talc-filled PP random copolymers, median particle sizes commonly range from 1.0 µm to 2.5 µm, with a top cut below 10 µm to 15 µm to preserve notched impact resistance. Fine talc raises flexural modulus but lowers melt flow and impact; coarser talc may improve flow at the expense of surface gloss. The filler orientation distribution through the plaque thickness is set by fountain flow at the melt front. In injection-moulded plaques of 3 mm nominal thickness, the oriented skin layer typically occupies 10% to 15% of the wall, while the core remains more randomly oriented. This skin-core morphology produces anisotropic mechanical response and must be accounted for when cutting specimens parallel and transverse to the melt-fill direction.
| Property | Test method | Typical class range | Remark |
|---|---|---|---|
| Melt mass-flow rate | ISO 1133-1:2022 | 8–15 g/10 min at 230 °C/2.16 kg | Injection-moulding rheology; verify against certificate of analysis |
| Density | ISO 1183-1:2019 | 1.03–1.07 g/cm³ | Higher than unfilled PP-R |
| Tensile yield stress | ISO 527-2:2012 | 23–27 MPa | Type 1A specimen, 50 mm/min |
| Tensile elongation at yield | ISO 527-2:2012 | 3–6% | Reduced ductility versus unfilled random copolymer |
| Flexural modulus | ISO 178:2019 | 1800–2400 MPa | 2 mm/min |
| Charpy notched impact at 23 °C | ISO 179-1:2023 | 4–7 kJ/m² | Random copolymer matrix improves over PP homopolymer talc compounds |
| Charpy notched impact at -20 °C | ISO 179-1:2023 | 2–3 kJ/m² | Type 1eA notch |
| Heat deflection temperature B | ISO 75-2:2013 | 80–95 °C | 0.45 MPa, flatwise |
| Vicat softening temperature | ISO 306:2022 | 110–125 °C | Method B50, 50 °C/h, 50 N |
| Mold shrinkage, parallel | ISO 294-4:2018 | 0.7–1.0% | Lower than unfilled PP-R |
Linear coefficient of thermal expansion is reduced by talc reinforcement. Unfilled PP-R typically exhibits CLTE values from 100 × 10⁻⁶ K⁻¹ to 150 × 10⁻⁶ K⁻¹ between 23 °C and 80 °C under ISO 11359-2:2021. A 20% talc-filled PP random copolymer class is reported in technical literature at roughly 50 × 10⁻⁶ K⁻¹ to 70 × 10⁻⁶ K⁻¹ in the flow direction and 70 × 10⁻⁶ K⁻¹ to 90 × 10⁻⁶ K⁻¹ transverse to flow. This reduction decreases thermal stresses in metal-to-plastic assemblies and helps maintain snap-fit retention after thermal cycling. Designers should apply anisotropic CLTE values in finite-element simulations; using isotropic unfilled PP-R data overestimates under-hood or appliance-interior thermal expansion by 30–50%.
In unfilled PP-R, post-filling shrinkage is dominated by crystallization and thermal contraction; linear mold shrinkage typically falls in the range 1.2–1.6% under ISO 294-4:2018. At 20% by weight talc, the high-aspect-ratio platelet filler restricts matrix contraction along the flow direction, while transverse shrinkage remains moderately higher. This anisotropy produces a differential shrinkage ratio commonly between 0.75 and 0.90 for talc-filled PP, compared with 0.85–0.95 for unfilled random copolymer. Mold-filling simulations using Moldex3D or Autodesk Moldflow require orientation-dependent PVT and shrinkage coefficients to predict warpage. For components with rib-to-nominal-wall ratios above 1.0, sink mark depth is reduced relative to unfilled PP-R because the talc network reduces the post-crystallization specific volume change.
The flexural modulus of talc-filled PP random copolymers is not solely a function of filler weight fraction; the aspect ratio, delamination state during compounding, and coupling agent determine stiffness. At 20% loading, flexural modulus values reported in class literature cluster around 1800 MPa to 2400 MPa according to ISO 178:2019. Heat deflection temperature under 0.45 MPa shifts upward by roughly 15 °C to 25 °C relative to unfilled PP-R. The difference between HDT B and HDT A is wider than in amorphous materials because the talc network sustains modulus only up to the onset of matrix softening; above 100 °C, modulus retention depends on crystallinity and filler contact density. Unfilled PP-R typically exhibits HDT B values of 60 °C to 75 °C, whereas the talc-filled random copolymer grade operates closer to 80 °C to 95 °C in short-term load-bearing tests. Long-term creep at 80 °C is governed by matrix viscoelasticity, not solely by filler reinforcement, so design stress should be derived from isochronous stress-strain curves under ISO 899-1:2017.
Compared with Seculene PPR 1040 without talc, the TV20 variant increases flexural modulus by roughly 80–120% and reduces Charpy notched impact at 23 °C from typically 6–12 kJ/m² to 4–7 kJ/m². Compared with a 20% talc-filled PP homopolymer, the random copolymer matrix of PPR 1040 TV20 S0 retains a narrower processing window but provides a lower brittle-to-ductile transition temperature, often reflected in notched Charpy values at -20 °C that are 1.5–2.0 times higher than homopolymer talc compounds. This distinction is critical in automotive interior carrier parts and appliance housings subject to cold impact after conditioning at -30 °C for 24 h and tested according to ISO 179-1:2023.
| Characteristic | Seculene PPR 1040 TV20 S0 class | Unfilled PP-R | 20% talc-filled PP homopolymer |
|---|---|---|---|
| Flexural modulus, ISO 178:2019 | 1800–2400 MPa | 800–1100 MPa | 2200–2800 MPa |
| Charpy notched 23 °C, ISO 179-1:2023 | 4–7 kJ/m² | 6–12 kJ/m² | 2–4 kJ/m² |
| Charpy notched -20 °C, ISO 179-1:2023 | 2–3 kJ/m² | 2–5 kJ/m² | 1–2 kJ/m² |
| Mold shrinkage, ISO 294-4:2018 | 0.7–1.0% | 1.2–1.6% | 0.5–0.9% |
| HDT B, ISO 75-2:2013 | 80–95 °C | 60–75 °C | 90–110 °C |
Injection-moulding trials on general-purpose reciprocating screw machines with clamp force capacities from 800 kN to 1800 kN and screw L/D ratios of 20:1 to 22:1 indicate that melt temperature should be maintained between 220 °C and 250 °C. Mold temperature should be controlled from 30 °C to 60 °C to balance surface gloss and crystallization. Back pressure of 0.5 MPa to 1.0 MPa and screw rotation speeds of 80 min⁻¹ to 150 min⁻¹ assist dispersion of the talc without excessive shear heating. The material should be pre-dried at 80 °C for 2 h when condensation is suspected; polypropylene is not hygroscopic, but surface moisture on cold granules can create splay defects. Regrind levels up to 30% by weight are typical for non-appearance structural parts, provided the regrind is dry and free of mixed-polymer contamination.
On production-scale injection-moulding machines with clamp forces from 1000 kN to 1600 kN, multi-cavity interior carrier tools have demonstrated that the random copolymer matrix avoids the brittle ejection fractures sometimes observed with 20% talc-filled PP homopolymer. Ejector pin design remains critical because the talc-filled skin can whiten under stress; ejector pin speed should be limited to 50–80 mm/s during initial separation. Parts conditioned at -30 °C for 24 h and subjected to ISO 179-1:2023 Charpy impact should be tested on both gate and non-gate regions, as filler orientation at weld lines can reduce notched impact by 20–40% relative to unfilled random copolymer. Weld-line strength is a known processing bottleneck: maintaining mold temperature above 45 °C and using sequential valve-gated hot runners can shift the weld line away from load-bearing ribs.
Observed processing failure modes in talc-filled PP random copolymer include flow-front delamination at cold mold temperatures below 30 °C, gate blush when injection velocity exceeds 250 mm/s, and surface splay from wet regrind. In injection-moulded fan shrouds and HVAC carriers, jetting can occur if the gate diameter is below 1.5 mm or if the melt temperature is below 220 °C. To avoid jetting, the gate should be positioned against a cavity wall or a tab gate should be used. Pressure at transfer from injection to holding should be 60–80% of peak injection pressure; holding pressure should be maintained for at least 5 s/mm of nominal wall thickness. Packing times outside this range create sink marks or overpacked flash.
Seculene PPR 1040 TV20 S0 must be evaluated against application-specific migration and food-contact requirements. If the grade is intended for food-contact articles, compliance is not automatically transferred from unfilled PP-R; the talc and the stabilization package must be cleared under the applicable regional regulation. In the European Union, Commission Regulation (EU) No 10/2011 and its amendments require migration testing for the final article; talc is a permitted additive under the relevant positive list only when meeting purity criteria. In the United States, 21 CFR 177.1520 covers olefin polymers, but talc and additives may require 21 CFR 178.3297 or equivalent clearance. RoHS Directive 2011/65/EU and REACH Article 33 declarations should be obtained from the manufacturer for lot-specific substance-of-concern screening. For automotive interiors, VDA 278:2011 or VDA 277 may be required to quantify volatile and semi-volatile organic compound emissions.
Application areas are limited to injection-moulded components where dimensional stability and moderate stiffness are required: automotive HVAC carriers, instrument panel substrate attachments, appliance motor housings, electrical enclosure frames, and furniture structural brackets. This grade is not optimized for pipes or fittings; PPR 1040 pipe grades without talc are used for hot- and cold-water pressure piping under ISO 15874-2:2013 and DIN 8078. The presence of 20% talc reduces long-term hydrostatic strength and socket-fusion weldability, so the TV20 S0 variant should not be substituted for pipe-grade PP-R.
The processing window is narrower than unfilled PP-R because talc accelerates nucleation; holding melt temperature above 250 °C for extended residence times may cause chain scission and discoloration. Avoid combining this grade with amine-based stabilizers or certain hindered amine light stabilizer packages that interfere with the acid scavenger system; compatibility should be confirmed by thermal gravimetric analysis and oxidation induction time under ISO 11357-6:2018. At ambient relative humidity above 60%, pre-drying measures are recommended. Injection moulds should use vent depths of 0.02–0.03 mm and generous runners to reduce flow-front hesitation; gate freeze time should be validated by in-mould pressure sensors. Lot-to-lot variance in talc content should be monitored by ash content according to ISO 3451-1:2019; a tolerance of ±1.0% by weight is common for industrially compounded grades. Published data for this specific configuration is limited, so qualification trials on the intended machine are required before serial production.
