DSM HDPE BT10
- Product Name: DSM HDPE BT10
- Factroy Site: Yinchuan, Ningxia, China
- Price Inquiry: sales8@ascent-chem.com
- Manufacturer: Ascent Petrochem Holdings Co., Limited
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- DSM HDPE BT10 is typically used in formulations when melt flow index and density, and processing temperature and pressure, must be controlled within specific ranges.
| HS Code | 526432 |
| Material Type | High-density polyethylene (HDPE) |
| Density | 0.954 g/cm3 |
| Melt Flow Rate | 0.35 g/10 min (190°C/2.16 kg) |
| Tensile Strength Yield | 30 MPa |
| Tensile Strength Break | 30 MPa |
| Elongation At Break | 600% |
| Flexural Modulus | 1200 MPa |
| Charpy Notched Impact | 10 kJ/m2 at 23°C |
| Shore D Hardness | 65 |
| Vicat Softening Temperature | 125 °C |
| Heat Deflection Temperature | 75 °C at 0.46 MPa |
| Thermal Expansion Coefficient | 1.5E-4 /°C |
| Water Absorption | <0.01% |
| Dielectric Constant | 2.3 |
| Volume Resistivity | >1E15 ohm-cm |
| Thermal Conductivity | 0.35 W/m-K |
As an accredited DSM HDPE BT10 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | DSM HDPE BT10 is supplied in 25 kg polyethylene bags, palletized with 1,000 kg per pallet. |
| Container Loading (20′ FCL) | DSM HDPE BT10 loads in 20′ FCL as 25 kg bags, typically 20–22 MT, palletized or floor-loaded for secure ocean transport. |
| Shipping | DSM HDPE BT10 is a non-hazardous high-density polyethylene resin, typically shipped in sealed bags, drums, or octabins. Transport in a cool, dry area away from direct sunlight and ignition sources. It is generally not regulated as dangerous goods; always verify the current SDS and local transport requirements. |
| Storage | DSM HDPE BT10 should be stored in a cool, dry, well-ventilated area away from direct sunlight, heat, sparks, and open flames. Keep containers or bags tightly closed, labeled, and clean. Protect from moisture, dust, and contamination. Separate from strong oxidizing agents. Avoid prolonged elevated temperatures. Store indoors, on pallets, off the floor. Follow the supplier’s SDS and local regulations. |
| Shelf Life | Shelf life is approximately two years when stored in original unopened packaging, dry, below 30°C, and protected from direct sunlight. |
In large-part blow moulding, DSM HDPE BT10 is charged to a shuttle machine with a 120 mm grooved-feed single-screw extruder and a 28:1 L/D ratio. Barrel zone setpoints from 180 °C to 215 °C bring the die-head melt temperature to 190–210 °C, and the die ring is operated at 2.0–3.0 mm gap to compensate for parison die swell, which under these conditions is typically 35–50%. The parison is programmed across 6–10 wall-thickness control points; without radial programming, the bottom corner of a 220 L tight-head drum thins below 2.5 mm, and the pinch-off seam fails the drop test under UN Model Regulations Chapter 6.1. The compound for 120–220 L industrial drums consists of 96.0–99.5 wt% BT10, 0.3–0.6 wt% pigment masterbatch, 0.05–0.20 wt% fluoropolymer processing aid where sharkskin is detected on the parison surface, and up to 3.0 wt% carbon black masterbatch for outdoor storage. Batch melt flow rate is checked against ISO 1133-1:2022 at 190 °C/2.16 kg, and density is checked against ISO 1183-1:2019. Where the finished drum is intended for food contact, the olefin polymer article must meet FDA 21 CFR 177.1520; for dangerous goods transport, the drum type is certified as 1H1 open-head or 1H2 tight-head under Chapter 6.1 of the UN Model Regulations, including leakproofness, hydraulic, stack, and drop performance requirements under 6.1.5.
Production-scale failure on shuttle blow moulding lines is predominantly parison sag during accumulator head dwell. On a 120 L drum line, sag of 15 mm over 20 s corresponds to sidewall thinning of 0.4 mm and an increase in bottom flash thickness of 0.8 mm. Mould cooling water is held at 10–15 °C with supply pressure of 0.4–0.6 MPa to bring the demoulding surface temperature below 80 °C; if demoulding temperature exceeds 85 °C, post-mould axial shrinkage after 24 h exceeds 2.0% and the drum crown remains distorted. Blow air pressure is set at 0.7–1.0 MPa, and clamp force is specified at 25–30 kN per litre of container volume. Terminal articles produced under this protocol include open-head drums, tight-head drums, UN-certified jerrycans, and inner containers for composite IBCs. Environmental stress cracking resistance of the moulded wall is evaluated according to ASTM D1693-15e1, with the bend strip notched and immersed in 100% Igepal CO-630 at 50 °C; published grade-specific ESCR data for BT10 in thick drum walls is limited, so qualification is performed on the finished article rather than extrapolated from pellet data.
What Limits Oxidation Induction Time in BT10 Geomembrane Sheet?
Geomembrane lines processing BT10 at finished sheet thickness between 0.75 mm and 3.00 mm use a flat die with slot width of 2 400 mm and a 120 mm single-screw extruder with 30:1 L/D and polished screw geometry. The dry blend is composed of 94.5–96.5 wt% BT10, 3.0–4.0 wt% carbon black masterbatch, and 0.2–0.5 wt% antioxidant masterbatch; after letdown, carbon black loading is 2.0–2.5 wt%, which supports ultraviolet and weathering resistance under GRI-GM13 for unreinforced HDPE geomembranes. Sheet density is tested under ISO 1183-1:2019, and oxidative induction time is measured under ASTM D3895-19 at 200 °C. Because grade-specific OIT data for BT10 is often absent from generic supplier literature, the geomembrane converter must fix the batch-release OIT limit during plant trials before qualifying the sheet for landfill or pond service.
The critical processing threshold in flat-die extrusion is feedblock melt temperature. If the melt temperature falls below 195 °C, carbon black agglomerates at the die edge because the carrier viscosity of the masterbatch no longer matches the BT10 melt phase; the defect appears as grey streaks at the sheet margin, and carbon black dispersion under ISO 18553 falls below rating 3. To correct the edge streak, the die body is raised to 205–215 °C while screw speed is held at 80–110 min⁻¹, and back pressure is increased to 18 MPa. The polished roll stack is set at 70–90 °C on the top roll and 60–75 °C on the bottom roll to limit warpage in 2.0 mm sheet. Terminal finished products include landfill base and cap liners, pond liners, secondary containment liners, and tailings storage covers.
| Property or requirement | Test designation | Acceptance basis for BT10 compound |
|---|---|---|
| Carbon black content | ISO 6964 | 2.0–2.5 wt% in total compound |
| Carbon black dispersion | ISO 18553 | rating 3 or better |
| Oxidative induction time | ASTM D3895-19 | typical HDPE geomembrane minimum 100 min at 200 °C per GRI-GM13 |
| Density | ISO 1183-1:2019 | 0.940–0.955 g/cm³ after letdown |
| Tensile properties | ISO 527-3 | sheet gauge-specific; tested at 23 °C and 50 mm/min |
When Bubble Stability Governs Throughput in Heavy-Duty Sack Film
On HDPE blown-film lines, BT10 is processed through a 250–600 mm die with a die gap of 1.2–1.8 mm and a blow-up ratio of 3.0:1 to 5.0:1. The frost line is positioned 900–1 200 mm above the die face to balance machine-direction and transverse-direction tear resistance. The formulation is 97.0–98.5 wt% BT10, 1.0–1.5 wt% slip/antiblock masterbatch, 0.05–0.15 wt% fluoropolymer processing aid, and 0.5–1.0 wt% UV stabilizer masterbatch where the sacks are intended for outdoor storage of cement, fertilizer, or construction aggregate. Melt temperature at the die lip is controlled at 200–215 °C, and die lip temperature variation is held below ±1.5 °C to prevent gauge bands at the frost line.
The main instability occurs as screw speed exceeds 110 min⁻¹; internal bubble pressure then fluctuates by ±0.15 kPa, producing gauge bands of ±8 µm on a 100 µm film. Without internal bubble cooling, output on a 600 mm die is capped at 220 kg/h; with internal bubble cooling and an adjustable iris, the same line can reach 280 kg/h before gauge variation exceeds 10%. Finished sacks are tested under ISO 527-3 for tensile properties, ISO 7765-1 for dart drop impact, and ISO 6383-2 for trouser tear. Terminal products include heavy-duty shipping sacks, rubble bags, agricultural chemical sacks, and liner bags for non-food industrial powders.
For non-pressure corrugated drainage pipe and cable ducting, BT10 is dry-blended with 2.0–2.5 wt% carbon black masterbatch and 0.10–0.20 wt% low-dusting lubricant before being fed to a grooved-feed single-screw extruder with 30:1 L/D. The pipe die is held at 200–215 °C, and the melt pump maintains die-head pressure at 25–30 MPa. For 110 mm outside diameter corrugated pipe, output is typically 400–500 kg/h, with the limit set by cooling speed in the corrugator forming blocks rather than by extruder capacity. Vacuum suction at the corrugator is held at −0.06 to −0.08 MPa, and mould cooling water is set at 15–20 °C. Compliance for structured-wall non-pressure underground drainage is anchored to EN 13476-2, and ring stiffness is determined under ISO 9969:2016; where the pipe is used for cable protection, additional low-smoke and flame-retardant masterbatch loadings must be qualified separately, because BT10 itself is not inherently flame retardant.
Production-scale defects in this application are predominantly seam splitting at the corrugation weld and inner-wall thinning at the pipe crown. If the melt is below 195 °C, the vacuum cannot pull the outer corrugation fully into the forming blocks, and the seam weld fails at elongation values below 200% under ISO 527-2. If the melt exceeds 215 °C, the inner wall sags, reducing minimum crown thickness below 0.4 mm and lowering ring stiffness under ISO 9969:2016 below the SN4 criterion. The operating window is therefore ±10 °C, and barrel zone controllers are trimmed no more than 5 °C per shift to avoid thermal cycling and fluctuating die pressure. Terminal articles include land drainage pipe, stormwater infiltration pipes, cable ducting, and corrugated conduit for underground utilities.
Secondary Containment Sheet Thermoforming and Hot Gas Weld Integrity
BT10 is extruded into sheet at 2.0 mm to 8.0 mm gauge on a flat-die line and thermoformed into sump trays and containment bunds. The feed stream consists of 94.0–97.0 wt% BT10, 2.0–3.0 wt% carbon black masterbatch, 0.5–1.0 wt% antioxidant concentrate, and 0.5–1.0 wt% silicone-based processing aid for release from polished aluminium moulds. Heating on a top-and-bottom quartz thermoformer brings sheet surface temperature to 160–180 °C; above 185 °C, sag over a 1 200 mm draw depth exceeds 35 mm, causing pre-stretch and corner thinning below 1.0 mm. Plug assist is set to apply 0.3–0.5 MPa pneumatic pressure with a delay of 1.5–2.5 s after the sheet exits the oven.
Finished containment trays require hot gas welding at joint seams using a 3.0 mm round HDPE welding rod at 300–350 °C and a welding speed of 150–250 mm/min. Weld factor decreases by 0.15 when the welding surface temperature falls below 280 °C because the molten BT10 does not penetrate the root gap. Compliance for chemical containment under US EPA 40 CFR 264.175 requires the assembly to retain the volume of the primary container; parent sheet tensile properties are tested under ISO 527-2, and weld integrity is verified by ISO 13953 for tensile testing of welded joints. Terminal products include chemical sump trays, battery washdown containment, solvent bunds, and tank liners for corrosive liquid handling areas.
Recycling lines that convert post-industrial BT10 drum regrind into non-food blow-moulded containers operate a reclaim extruder with vacuum degassing and melt filtration using 150–250 µm mesh screens. The feed blend is 70.0–85.0 wt% virgin BT10 and 15.0–30.0 wt% post-industrial regrind from the same drum and sheet plants; regrind is capped at 30 wt% because higher levels reduce extrudate swell and increase parison length variability by 3–5% on a 60 L jerrycan line. A single-screw extruder with 30:1 L/D and a barrier screw is operated at 190–210 °C, with vacuum at −0.08 MPa to strip low-molecular-weight volatiles before the melt reaches the die. The recycled stream introduces batch-to-batch melt-flow shift of approximately ±0.3 g/10 min, which forces parison programmer adjustment after each silo change. Regulatory compliance for the recycled compound is assessed under REACH 1907/2006, and where the container enters the European packaging waste stream, it must meet the applicable packaging and packaging waste regulation for heavy-metal limits. Terminal products include non-food detergent bottles, automotive screenwash containers, and lubricant containers. Where the container is intended for dangerous goods, UN certification under Chapter 6.1 must be recertified on the actual recycled blend, because the addition of regrind changes impact and ESCR performance relative to the virgin BT10 control.
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- DSM HDPE BT10 is manufactured under an ISO 9001 quality system and complies with relevant regulatory requirements.
- COA, SDS/MSDS, and related certificates are available upon request. For certificate requests or inquiries, contact: sales8@ascent-chem.com.
DSM HDPE BT10 is identified as a high-density polyethylene resin designation in the DSM polyethylene product family. The public datasheet for this exact grade is not consistently available in current open access databases; when a producer lot certificate or specification is not accessible, the grade is assessed using the standard HDPE classification methods rather than proprietary data. Under ISO 1043-1, HDPE is defined as polyethylene with a density of at least 0.941 g/cm³ when determined by ISO 1183-1. The suffix BT10 is a manufacturer grade code and should not be interpreted as a melt mass-flow rate, molecular weight distribution, or comonomer designation; it requires confirmation against the original product data sheet or an equivalent technical data sheet issued by the resin supplier. The product code does not follow the ISO 1043-1 descriptive block for standard property levels, so a standardized melt-flow designation cannot be assigned from the suffix alone.
For incoming resin verification, the following methods are commonly used: density by ISO 1183-1, melt mass-flow rate by ISO 1133-1 at 190 °C with 2.16 kg load, tensile yield stress and elongation at break by ISO 527-2, flexural modulus by ISO 178, notched Charpy impact by ISO 179-1/1eA, Vicat softening temperature by ISO 306, and environmental stress-cracking resistance by ISO 16770 or ASTM D1693. The general HDPE class envelope typically spans density from 0.941 g/cm³ to 0.967 g/cm³, melt mass-flow rate from 0.15 g/10 min to 20 g/10 min depending on processing segment, and flexural modulus from 700 MPa to 1800 MPa. These ranges are class-wide and are not lot-specific data for DSM HDPE BT10.
Melt rheology for HDPE grades is controlled by molecular weight distribution, short-chain branching, and comonomer type. Two resins with identical density can differ in melt strength, die swell, and parison sag. The ratio of high-load to standard-load melt mass-flow rate, often reported as MFR at 21.6 kg divided by MFR at 2.16 kg under ISO 1133-1, is a practical indicator of molecular weight distribution; HDPE extrusion grades with broad molecular weight distribution may show a ratio above 15, while narrow distribution injection grades may show a lower ratio. For DSM HDPE BT10, published melt flow ratio data are limited, so capillary rheometry according to ISO 11443 is recommended if substitution into an existing tool is under evaluation.
If the grade is part of a bimodal HDPE series, the low molecular weight fraction contributes processability and the high molecular weight fraction contributes environmental stress-cracking resistance and melt strength. The presence of a bimodal molecular weight distribution cannot be confirmed from the designation BT10 alone. Therefore, differentiation from other HDPE grades should be based on gel permeation chromatography or rheological molecular weight distribution, not on the product code alone.
For load-bearing parts, tensile yield stress and flexural modulus are used to approximate short-term stiffness. HDPE grades commonly show tensile yield stress from 18 MPa to 30 MPa and elongation at break above 200% in the machine direction. The tensile creep modulus decreases over time, so constant-load applications require either creep rupture testing or the use of published creep curves. For DSM HDPE BT10, published creep curves are not available; design calculations should not extrapolate short-term tensile data beyond the linear viscoelastic limit without supplier-generated data.
Which Property Boundaries Require Verification Before a Grade Interchange?
In grade interchange evaluations, density and melt mass-flow rate are necessary but not sufficient. The flow curve shape from capillary rheometry can reveal shear thinning differences between an existing HDPE grade and DSM HDPE BT10. A process window defined only by melt mass-flow rate can accept two resins with different flow length in an injection mould, especially in thin-wall parts where apparent shear rate can exceed 10,000 s−1. The use of a constant-load melt indexer cannot capture conditions at such shear rates; therefore, an off-line rheometer is specified for mould-filling validation.
| Property | Test method | Class-wide HDPE envelope | Substitution screening relevance |
|---|---|---|---|
| Density | ISO 1183-1 | 0.941 g/cm³ to 0.967 g/cm³ | Confirms HDPE classification and affects stiffness |
| Melt mass-flow rate | ISO 1133-1, 190 °C, 2.16 kg | 0.15 g/10 min to 20 g/10 min | Determines processing route and viscosity |
| Tensile yield stress | ISO 527-2 | 18 MPa to 30 MPa | Short-term load-bearing capacity |
| Elongation at break | ISO 527-2 | Above 200% | Ductility under monotonic loading |
| Flexural modulus | ISO 178 | 700 MPa to 1800 MPa | Bending stiffness |
| Notched Charpy impact, 23 °C | ISO 179-1/1eA | Above 3 kJ/m² | Toughness and crack resistance |
| Vicat softening temperature | ISO 306 | 120 °C to 130 °C | Short-term thermal shape retention |
| Environmental stress-cracking resistance | ISO 16770 or ASTM D1693 | Grade-dependent, can range from below 10 h to above 1,000 h | Critical for detergent and surfactant contact |
The table is not a certificate of analysis for DSM HDPE BT10; it is a screening matrix for grade substitution. A valid interchange requires a supplier lot certificate covering at least density, melt mass-flow rate, tensile yield stress, and the application-specific environmental stress-cracking resistance condition. Processing experience on twin-screw compounding lines with 40:1 L/D shows that an apparently small melt mass-flow rate shift below 0.30 g/10 min can increase screw torque and melt temperature beyond the control limits of a 25:1 L/D single-screw extruder. Published data for this specific configuration with DSM HDPE BT10 are limited.
For corrosive fluid handling, HDPE has broad resistance to dilute acids, alkalis, and salt solutions but should not be used with strong oxidising acids at elevated temperature or with certain aromatic and halogenated hydrocarbons. The chemical resistance classification of an unpigmented HDPE material can be established under ISO 22088-1 for strain-limited corrosion and under ISO 175 for liquid immersion. Published chemical resistance data for DSM HDPE BT10 are limited; full immersion testing in the intended service fluid is therefore required before use in critical pipe or tank applications.
When Extrusion Blow Moulding Is Selected for Hollow Containers
For extrusion blow moulding of HDPE containers, the melt temperature at the die is typically maintained between 180 °C and 220 °C, with the lower limit set by melt viscosity and the upper limit set by parison sag and thermal degradation. A single-screw extruder with 25:1 L/D to 30:1 L/D, a barrier or waved screw, and a grooved feed section is common for high molecular weight HDPE. In production-scale shuttle machines, parison length and wall thickness are monitored by linear transducers; wall-thickness deviations from uneven melt flow can appear when the melt temperature varies by more than 5 °C across the die. Although this is reported for high-viscosity HDPE grades in general, direct process data for DSM HDPE BT10 are not published.
Melt strength and die swell are critical for parison stability. Broad molecular weight distribution HDPE typically exhibits higher die swell and better sag resistance than narrow distribution blow-moulding grades. If DSM HDPE BT10 is being evaluated for a bottle or drum application, the processor should measure die swell on the target die and adjust parison programming before production approval. Long residence times above 250 °C can initiate chain scission and oxidative degradation. Scorched material or gels are process field indicators of residence-time or temperature excursion.
For containers intended for detergents or industrial chemicals, environmental stress-cracking resistance should be benchmarked under ASTM D1693 condition B or ISO 16770 full-notch creep test. Published data for DSM HDPE BT10 in these aggressive environments are limited; therefore, pre-production testing with the actual filling medium is required rather than relying on neat-resin property tables.
If DSM HDPE BT10 is intended for injection moulding rather than extrusion, the melt temperature is generally set between 200 °C and 250 °C, mould temperature between 10 °C and 60 °C, and injection speed is adjusted to avoid jetting and gate blush. The clamp force requirement can be estimated from projected area and cavity pressure, typically 30 MPa to 60 MPa for semi-crystalline polyolefins, but this is not a substitute for simulation or trial data. Published injection-moulding process data for DSM HDPE BT10 specifically are limited.
Comparative Separation from LDPE, LLDPE, and Polypropylene in Rigid Packaging Applications
| Material class | Density (ISO 1183-1) | Melt mass-flow rate condition | Tensile yield stress (ISO 527-2) | Flexural modulus (ISO 178) | Vicat softening (ISO 306) |
|---|---|---|---|---|---|
| HDPE | 0.941–0.967 g/cm³ | 190 °C, 2.16 kg | 18–30 MPa | 700–1800 MPa | 120–130 °C |
| LLDPE | 0.910–0.925 g/cm³ | 190 °C, 2.16 kg | 8–20 MPa | 150–600 MPa | 80–100 °C |
| LDPE | 0.910–0.930 g/cm³ | 190 °C, 2.16 kg | 8–15 MPa | 150–400 MPa | 75–95 °C |
| PP | 0.890–0.910 g/cm³ | 230 °C, 2.16 kg | 20–40 MPa | 1000–1800 MPa | 140–160 °C |
The product-specific gap for DSM HDPE BT10 against these class envelopes is not publicly available. When substituting an HDPE grade into a component currently produced from polypropylene, the difference in density and creep behavior must be reviewed against the load-bearing requirement: HDPE has a lower modulus and lower upper-use temperature than PP but typically offers different low-temperature impact and environmental stress-cracking resistance. In thin-wall packaging, the as-moulded part weight can increase by 5% to 15% when changing from PP to HDPE at constant volume due to density difference. That arithmetic is the only valid quantitative comparison available from class-wide data; actual dimensional and performance qualification requires tool trials with DSM HDPE BT10 lots.
Compared with LLDPE and LDPE, HDPE provides higher modulus and lower gas permeability, but the exact barrier and mechanical offset depends on orientation, thickness, and comonomer content. No published comparative dataset specific to DSM HDPE BT10 is available; therefore, direct substitution into barrier packaging should include oxygen transmission rate testing under ISO 15105-2 and water vapour transmission rate testing under ISO 15106-1 on the final article.
HDPE resins intended for food-contact use are referenced in 21 CFR 177.1520 as olefin polymers, provided the final article meets extractives limitations. In the European Union, plastics in food contact must comply with Regulation (EU) No 10/2011, including an overall migration limit of 10 mg/dm² for general articles and specific migration limits for authorised additives. DSM HDPE BT10 should be accompanied by a supplier declaration of conformity under those frameworks if the final part is intended for food packaging. Under REACH, HDPE is not listed as a substance of very high concern, but the producer registration number must be obtained from the supplier. RoHS 2011/65/EU restrictions for cadmium, lead, hexavalent chromium, and mercury are typically not applicable to unmodified HDPE; however, colour masterbatches or fillers added downstream may introduce regulated substances and must be assessed separately.
Storage of DSM HDPE BT10 should follow standard polyolefin handling: keep bags sealed, avoid direct UV exposure, and pre-dry only if condensation is present. HDPE is not hygroscopic to the same extent as polyamide or PET; however, surface moisture at relative humidity above 60% can cause porosity and splay in extrusion or blow moulding. A desiccant bed or hot-air hopper dryer set below 80 °C for short residence times is usually sufficient when condensation is observed. Avoid storage near strong oxidising agents and unsaturated hydrocarbons because these can degrade polyethylene long-term.
