| HS Code | 196316 |
| Material Type | Polypropylene (PP) Copolymer |
| Filler Content Talc | 20% |
| Density 23 C | 1.05 g/cm³ |
| Melt Flow Rate 230 C 2 16 Kg | 12 g/10 min |
| Tensile Strength At Yield | 22 MPa |
| Elongation At Break | 60% |
| Flexural Modulus | 2700 MPa |
| Izod Impact Strength Notched 23 C | 6 kJ/m² |
| Izod Impact Strength Notched 30 C | 3 kJ/m² |
| Heat Deflection Temperature 0 45 Mpa | 110°C |
| Heat Deflection Temperature 1 8 Mpa | 60°C |
| Vicat Softening Temperature B50 | 140°C |
| Rockwell Hardness R Scale | 80 |
As an accredited Seculene PPR 1240 TV20 S0 PP Copolymer factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied as virgin PP copolymer pellets in 25 kg heat-sealed bags, palletized and wrapped for safe transport and storage. |
| Container Loading (20′ FCL) | Seculene PPR 1240 TV20 S0 PP Copolymer is loaded as a 20′ FCL, with palletized bags securely stowed in a clean, dry container. |
| Shipping | Seculene PPR 1240 TV20 S0 is a polypropylene copolymer resin supplied as solid pellets. Ship in clean, dry containers to prevent contamination and moisture absorption. Avoid excessive heat and direct sunlight. Non-hazardous under normal transport conditions, but practice standard dust control and safe handling procedures. |
| Storage | Store Seculene PPR 1240 TV20 S0 PP Copolymer in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and open flames. Keep containers tightly sealed to prevent moisture contamination and dust accumulation. Avoid contact with strong oxidizing agents. Maintain stable ambient temperatures; no special refrigeration is required. Ensure proper labeling and access to safety data sheets. |
| Shelf Life | Shelf life is typically 2–3 years when stored in original, unopened packaging away from heat, moisture, and UV light. |
In automotive interior lower-door and scuff-plate moulding, Seculene PPR 1240 TV20 S0 is run as a ready-to-mould compound at 100 parts by weight; where lower flexural modulus is required to match soft-touch grained skins, the compound is let down with 10–20 wt% unfilled PP copolymer whose melt flow rate under ISO 1133-1:2022 at 230 °C/2.16 kg lies between 12 g/10 min and 16 g/10 min. This ratio reduces the effective talc content to approximately 16–18 wt% while preserving the dimensional stability needed for clip towers and ultrasonic weld bosses. Compliance for occupant-compartment plastics includes FMVSS 302 horizontal burn rate not exceeding 102 mm/min, VDA 278:2016 for VOC and FOG desorption behaviour, DIN 75201-B:2011 gravimetric fogging with OEM-specific residue limits commonly at or below 2 mg/100 cm², and the substance restrictions of EU 2000/53/EC Annex II and Regulation (EC) No 1907/2006 Annex XVII. Melt is introduced through sequential valve-gated hot-runner drops on injection moulding machines with clamp force between 1,000 kN and 2,500 kN; barrel temperatures are profiled from 200 °C rear to 220 °C nozzle, mould temperatures are held between 20 °C and 50 °C, and holding pressure is maintained between 30 MPa and 60 MPa. Flow hesitation below 2.0 mm wall thickness can generate visible weld lines on grained surfaces, so gate lands are dimensioned at 60–70% of the local wall thickness and low-shear screw geometries with L/D ratios of 20:1 to 25:1 are used to limit melt-temperature overshoot. Where published data specific to this exact grade are not available in an OEM specification, class-typical data for 20 wt% talc-filled PP copolymer compounds are used; the supplier certificate of analysis remains the controlling document. Terminal product types include lower-door trim panels, B-pillar lower covers, quarter-panel trim, trunk side liners, and extruded scuff plates with post-machined clip recesses.
| Blend Configuration | Effective Talc Content | Tensile Modulus ISO 527-2:2012 | Charpy Notched Impact ISO 179-1:2010 at 23°C | HDT 0.455 MPa ISO 75-2:2013 |
|---|---|---|---|---|
| 100 wt% Seculene PPR 1240 TV20 S0 | 20 wt% | 2,100–2,500 MPa | 5–7 kJ/m² | 95–105 °C |
| 90 wt% compound / 10 wt% unfilled PP copolymer | 18 wt% | 1,900–2,300 MPa | 7–10 kJ/m² | 90–100 °C |
| 80 wt% compound / 20 wt% unfilled PP copolymer | 16 wt% | 1,700–2,100 MPa | 9–13 kJ/m² | 85–95 °C |
Washing machine top panels and structural crossbars are moulded from the compound as supplied at 100 parts by weight; when low-temperature impact of a lid or detergent drawer frame must survive winter transport below -10 °C, converters dry-blend 3–5 wt% of ethylene-octene copolymer impact modifier and distribute it in a twin-screw extruder with L/D 40:1 before pelletising. The resulting melt has a recommended barrel profile from 190 °C to 220 °C, and screw back pressure is kept between 0.5 MPa and 1.0 MPa to avoid talc platelet attrition. End-use compliance for household appliances is assessed under IEC 60335-1 clause 30.2, with glow-wire testing according to IEC 60695-2-11:2021 at the end-product thickness and, for many unattended-appliance applications, ignition or flame persistence limits are validated at 650 °C or 750 °C depending on the current-carrying part category. Surface flame-spread data for plaques at 3.0 mm are reported under UL 94 HB; tensile modulus is measured by ISO 527-2:2012, flexural modulus by ISO 178:2019, and notched Charpy impact by ISO 179-1:2010 at 23 °C and -20 °C. The production mould uses sequential valve gating to shift weld lines away from snap-fit towers and hinge bosses; mould temperatures of 20–50 °C and holding pressure of 30–60 MPa are maintained across flat panels with flow-length-to-wall-thickness ratios not exceeding 150:1. Warpage after demoulding is measured at 24 h and typically falls between 0.8% and 1.2% in the flow direction and between 1.0% and 1.4% in the transverse direction; long thin ribs should be radiused at 0.5 mm minimum to prevent filling hesitation. Terminal product types include washing machine top panels, front lower crossbars, detergent dispenser housings, dryer lint screen frames, and rear structural brackets.
Electrical distribution junction boxes and low-voltage switch housings are produced from the compound with a let-down ratio that varies from 100 parts by weight of virgin compound to a maximum 30 wt% of clean in-house regrind from sprues and runners of the same grade; above 30 wt% regrind, moulders report sink marks around metal inserts and an increase in short shots in 2.5 mm thick walls. Compliance is verified through IEC 60695-2-11:2021 glow-wire tests at 650 °C for unattended appliances with connections carrying current above 0.2 A, UL 94 HB for plaque specimens at 1.5 mm and 3.0 mm, and mechanical evaluation by ISO 527-2:2012 and ISO 178:2019; substance restrictions are mapped to Regulation (EC) No 1907/2006 Annex XVII and EU 2011/65/EU Annex II. The injection moulding process uses direct sprue or hot-tip gating into a central boss to maintain radial flow; barrel temperatures from 200 °C to 230 °C, injection pressure between 80 MPa and 120 MPa, and holding pressure between 40 MPa and 70 MPa are used for parts with projected area below 0.15 m². Because talc orientation creates shrinkage anisotropy, machined metal inserts are preheated to 90–120 °C to reduce hoop stress cracking around the insert. Terminal product types include junction boxes, terminal block housings, modular switch bases, electrical enclosure terminal covers, and motor capacitor housings.
Air-conditioning condensate trays and blower scroll housings are moulded from the 20 wt% talc-filled PP copolymer because the mineral phase reduces linear thermal expansion and raises heat deflection temperature under condensate load. The formulation is processed as supplied at 100 parts by weight; when additional hydrolytic stability is required for acidic condensate, 0.1–0.2 wt% of hindered phenolic antioxidant masterbatch and 0.05–0.1 wt% acid scavenger are admitted at the throat, provided the S0 stabilisation package is first confirmed by the supplier certificate of analysis. Compliance for HVAC equipment includes UL 94 HB flame classification at 3.0 mm, IEC 60335-2-40 for electrically driven heat pumps and dehumidifiers, and mechanical property verification by ISO 527-2:2012, ISO 178:2019, and ISO 75-2:2013 for HDT at 0.455 MPa. The production process uses reciprocating-screw injection moulding with melt temperatures of 190–220 °C, mould temperatures of 20–45 °C, and injection speed profiled to fill ribbed trays without gas entrapment; screw rotation is maintained below 80 rpm on a 22:1 L/D screw to limit frictional heat and odour generation. Dimensional checks after 24 h must confirm bow of less than 1.5 mm across a 500 mm span. Terminal product types include split-air-conditioner condensate trays, evaporator drain pans, blower housing lower shells, fan scrolls, and dehumidifier collection basins.
Power tool motor hoods and air duct interfaces are injection moulded from the compound at 100 parts by weight; for quieter operation, 2–4 wt% of a low-hardness thermoplastic elastomer is overmoulded onto the hood surface rather than blended into the PP matrix, preserving the flexural modulus of the structural layer. Compliance is anchored by IEC 62841 series end-product safety evaluations for power tools, UL 94 HB for the polymer housing, and tensile property verification under ISO 527-2:2012; flame-spread behaviour is additionally assessed under IEC 60695-11-10:2013 at 3.0 mm. Production uses hot-tip gating into the motor hood centre and mould temperatures of 30–60 °C to control surface gloss; clamp force ranges from 1,200 kN to 3,000 kN, and holding pressure is set between 40 MPa and 70 MPa. Screw back pressure of 0.5–1.5 MPa is maintained to stabilise talc dispersion, while melt temperature is held between 200 °C and 225 °C to avoid hot spots near the check ring. Dimensional capability studies on production tooling show bore diameters for bearing seats stay within ±0.15 mm when mould temperature is held within ±3 °C. Terminal product types include angle-grinder motor hoods, heat-gun air duct interfaces, orbital sander dust-extraction ducts, and circular saw motor covers.
Battery pack housings for lawn trimmers and garden shredder chargers are processed from the compound at 100 parts by weight; for outdoor drop impact below -20 °C, converters dry-blend 5–10 wt% of an ethylene-octene impact modifier and re-compound on a 40:1 L/D twin-screw extruder at 190–210 °C before injection moulding. Compliance includes IEC 62841 series for hand-held garden equipment, UL 94 HB for the polymer housing, accelerated weathering according to ISO 4892-2:2013 method A cycle 1, and substance restrictions under Regulation (EC) No 1907/2006 Annex XVII and EU 2011/65/EU Annex II. Processing on injection moulding machines with clamp force between 800 kN and 1,800 kN uses melt temperatures of 190–220 °C, mould temperatures of 20–50 °C, and holding pressure between 30 MPa and 60 MPa; two hot-drop gates are preferred over a single sprue because unbalanced flow from one gate has been observed on multi-cavity charger-base tooling to produce corner warpage exceeding 2.0 mm across a 250 mm span. Predrying at 80 °C for 2 h is used when pellet surface condensation is visible or moisture exceeds 0.05 wt%. Terminal product types include battery pack housings for lawn trimmers, charger bases for hedge trimmers, electric pruner motor covers, and shredder switch boxes.
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Seculene PPR 1240 TV20 S0 PP copolymer is a talc-modified polypropylene random copolymer grade intended for injection-molded components requiring reduced post-molding shrinkage and higher stiffness than unfilled random copolymer. The designation combines a random copolymer matrix, a 20 wt% talc reinforcement level indicated by the TV20 suffix, and a stabilization or additive package indicated by the S0 suffix. Published data for this specific configuration is limited; the manufacturer’s technical data sheet remains the controlling source for grade-specific values. Comparable 20 wt% talc-filled PP random copolymer systems are documented in supplier technical literature as materials with increased flexural modulus, reduced thermal expansion, and lower shrinkage anisotropy relative to unfilled PP random copolymer.
During pilot and production-scale injection molding trials on hydraulic machines with clamp forces between 80 and 120 metric tons, this material class is processed at melt temperatures of 220–250 °C and mold temperatures of 30–60 °C. Drying in desiccant dryers at 80 °C for 2–4 h is recommended when storage relative humidity exceeds 60% RH. Screw configurations with L/D 20:1–24:1 and compression ratios of 2.2:1–3.0:1 provide adequate filler dispersion without excessive shear heating. On manufacturing lines equipped with 40–60 mm general-purpose screws, excessive screw recovery speed above approximately 0.3 m/s can generate talc-rich streaks, surface delamination, and non-uniform filler distribution. Gate freeze time is shorter than in unfilled random copolymer because the mineral filler accelerates solidification; holding-pressure profiles must therefore be transferred earlier to avoid sink marks while maintaining packing of thick-to-thin flow transitions.
Flexural modulus increases relative to unfilled PP random copolymer. Published values for 20 wt% talc-filled PP random copolymer systems commonly fall between 2,300 MPa and 3,200 MPa when measured according to ISO 178:2019 at 23 °C. The increase in stiffness is obtained at the expense of tensile elongation and notched impact. Charpy notched impact data for this material class measured under ISO 179-1:2020 at 23 °C are commonly reported between 3 kJ/m² and 6 kJ/m²; at -20 °C the values are lower by approximately 40–60%. The filler network also increases melt viscosity relative to unfilled random copolymer, so melt flow rate measured at 230 °C/2.16 kg under ISO 1133-1:2022 is reduced by the presence of oriented talc platelets and by the higher solidification front velocity. Screw torque and cavity pressure requirements are therefore higher than for unfilled PPR at the same melt temperature.
Because the talc platelets orient preferentially in the flow direction during mold filling, shrinkage is anisotropic. Cross-flow shrinkage typically exceeds flow-direction shrinkage by 0.1–0.4 percentage points in constrained geometries. This anisotropy must be addressed through gate placement, wall-thickness sequencing, and multi-stage pack pressure. In thin-wall parts below 1.5 mm wall thickness, sink marks over ribs and bosses are reduced relative to unfilled PPR due to lower volumetric contraction. In components with wall thickness from 2.5 mm to 4.0 mm, flow hesitation at multi-gate knit lines can produce localized strength reduction. The melt temperature should be raised within the manufacturer’s permitted range before increasing injection speed, because excessive shear heating can degrade the random copolymer phase and darken material near hot-runner drops.
Heat deflection temperature under 0.45 MPa is higher than unfilled PPR. Published values for talc-filled PP random copolymer systems using ISO 75-2:2013 method B generally lie between 95 °C and 120 °C, depending on matrix ethylene content and talc particle morphology. The grade differs from PP homopolymer with the same filler loading by lower crystalline melting point and a broader melting range, which improves low-temperature impact but reduces upper-use temperature in dry-heat environments. The random copolymer matrix also lowers the temperature at which post-molding dimensional relaxation becomes significant under constant load.
Applications requiring lower thermal expansion in warm-air or warm-liquid environments are positioned for this material class. The coefficient of linear thermal expansion of 20 wt% talc-filled PP random copolymers is commonly reported between 60 × 10⁻⁶ K⁻¹ and 90 × 10⁻⁶ K⁻¹ in the 23 °C to 80 °C range when measured according to ISO 11359-2:2021. In washing machine balance rings, small appliance structural frames, pump housings, and automotive HVAC ducts, this reduction in thermal expansion decreases the dimensional shift observed with unfilled random copolymer. The product differs from PP impact copolymer compounds by lower elastomeric phase content, which reduces subzero Charpy impact but improves surface hardness and lowers creep under sustained load. Compared with unfilled PP random copolymer, the talc-filled grade provides higher flexural modulus, lower shrinkage anisotropy, and better resistance to sink marks in ribbed geometries.
Mold shrinkage determinations for talc-filled random copolymers of this class are controlled by filler orientation and wall thickness. Flow-direction shrinkage can fall between 0.6% and 1.0%, while cross-flow shrinkage can fall between 0.8% and 1.3% depending on part geometry and packing. These ranges are derived from general mineral-filled PP random copolymer literature and are not grade-specific values. When the part requires post-mold assembly tolerances tighter than ±0.1 mm, a full mold-filling simulation with measured orientation tensor data and shrinkage calibration is required. Use of unfilled random copolymer in the same tool often produces higher warpage and greater difference between flow and cross-flow contraction.
In hot-water contact applications, the random copolymer matrix provides better hydrolysis resistance than many amorphous engineering resins; however, continuous exposure above 60 °C in oxygenated water requires validation of antioxidant depletion and talc-matrix adhesion retention. Chlorinated water above 2 mg/L free chlorine at elevated temperature can accelerate surface oxidation and reduce gloss. The grade is not positioned for continuous exposure to strong acids, ketones, or aromatic hydrocarbons; polypropylene is soluble or swollen by these fluids. Contact with amine-based additives in masterbatches or external lubricants should be avoided unless compatibility is confirmed, because amine-containing additives can interact with residual peroxide decomposition products and alter long-term heat-aging performance.
The material class is qualified through a series of ISO and regional test methods. Food-contact suitability for polypropylene is evaluated under EU 10/2011 or FDA 21 CFR 177.1520; grade-specific migration testing is required for the final article because the talc and stabilizer package influence overall migration. Electrical and electronic market compliance is generally assessed under REACH and RoHS 2011/65/EU; restricted substance declarations should be obtained for the specific batch and production site.
| Material system | Nominal filler loading | Relative flexural modulus | Relative notched impact | Characteristic shrinkage behavior |
|---|---|---|---|---|
| Seculene PPR 1240 TV20 S0-class talc-filled random copolymer | 20 wt% | 2,300–3,200 MPa typical class range | 3–6 kJ/m² at 23 °C typical class range | Reduced anisotropy relative to unfilled PPR |
| Unfilled PP random copolymer | 0 wt% | 900–1,400 MPa | 6–15 kJ/m² at 23 °C | Higher shrinkage and warpage |
| PP impact copolymer | 0 wt% | 1,100–1,500 MPa | 10–40 kJ/m² at 23 °C; retains useful impact at -20 °C | Intermediate shrinkage; higher CLTE |
| 40 wt% talc-filled PP homopolymer | 40 wt% | 4,000–5,500 MPa | 1.5–3 kJ/m² at 23 °C typical class range | Lower shrinkage; higher density |
| Property | Test method | Engineering relevance |
|---|---|---|
| Melt mass-flow rate | ISO 1133-1:2022, 230 °C/2.16 kg | Mold filling and gate freeze time |
| Density | ISO 1183-1:2019 | Verification of filler concentration |
| Flexural modulus | ISO 178:2019, 23 °C | Stiffness under bending load |
| Charpy notched impact | ISO 179-1:2020, 23 °C and -20 °C | Toughness and brittle transition |
| Heat deflection temperature | ISO 75-2:2013, method B, 0.45 MPa | Short-term thermal exposure |
| Linear thermal expansion | ISO 11359-2:2021, 23 °C to 80 °C | Dimensional stability in warm environments |
| Flammability | UL 94 | Electrical enclosure requirements |
| Food contact suitability | EU 10/2011, FDA 21 CFR 177.1520 | Food packaging and contact components |
| Restricted substances | REACH, RoHS 2011/65/EU | Market compliance |
For injection molding operations with hot-runner systems, the talc-filled random copolymer class requires thermal gate control to prevent premature freeze-off in valve-gated tools. Nozzle tips and gate inserts should be maintained below 260 °C during production interruptions; residence time above 10 min at full melt temperature can produce yellowing and filler agglomeration. Purging with a low-viscosity polypropylene or commercial purging compound is recommended after processing dark-colored or flame-retardant grades. Subsequent regrind addition above 20 wt% is not recommended without verification of tensile modulus, notched impact, and melt flow stability, because talc particle attrition during granulation and re-melting reduces reinforcement efficiency and increases variance in molded-part weight.
Differences from other polypropylene products are most evident in dimensional stability and failure mode. Compared with unfilled random copolymer, the talc-filled grade exhibits higher flexural modulus and lower shrinkage anisotropy but reduced weld-line strength and lower transparency. Compared with PP impact copolymer, the grade provides higher surface hardness, lower subzero impact, and lower thermal expansion. Compared with 40 wt% talc-filled homopolymer, the grade offers lower density, lower modulus, and generally better processing flow; however, the homopolymer variant may be preferred where absolute stiffness and heat deflection temperature outweigh impact and long-term thermal oxidative stability. Published data for this specific Seculene configuration is limited; validation on the intended production tool remains necessary for shrink, warpage, and mechanical acceptance.
