Dow HDPE XZ89609
- Product Name: Dow HDPE XZ89609
- Factroy Site: Yinchuan, Ningxia, China
- Price Inquiry: sales8@ascent-chem.com
- Manufacturer: Ascent Petrochem Holdings Co., Limited
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- Dow HDPE XZ89609 is typically used in formulations when melt index and density and processing temperature and pressure must be controlled within specific ranges.
| HS Code | 242496 |
| Density | 0.958 g/cm3 |
| Melt Index 190 C 2 16 Kg | 0.45 g/10 min |
| Tensile Strength At Yield | 27 MPa |
| Tensile Strength At Break | 30 MPa |
| Tensile Elongation At Break | 600 % |
| Flexural Modulus | 1200 MPa |
| Notched Izod Impact Strength | 80 J/m |
| Vicat Softening Point | 127 °C |
| Heat Deflection Temperature | 73 °C |
| Brittleness Temperature | -70 °C |
| Environmental Stress Crack Resistance | >1000 h |
| Hardness Shore D | 66 |
As an accredited Dow HDPE XZ89609 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Dow HDPE XZ89609 is packaged in 25 kg polyethylene bags, typically palletized as 1,000 kg per pallet for industrial use. |
| Container Loading (20′ FCL) | 20′ FCL container loading of Dow HDPE XZ89609 high-density polyethylene resin, palletized bags, securely stowed for ocean transport. |
| Shipping | Dow HDPE XZ89609 is a non-hazardous high-density polyethylene resin. It is not regulated by DOT, IATA, or IMDG. Ship in closed, labeled bags or boxes to prevent spillage and moisture. Store away from heat and ignition; avoid dust generation. No UN number, hazard class, or packing group assigned. |
| Storage | Store Dow HDPE XZ89609 in a cool, dry, well-ventilated area away from direct sunlight, heat, sparks, and flames. Keep original bags or containers tightly closed to prevent moisture, dust, and contamination. Stack securely on pallets to avoid damage. Avoid contact with strong oxidizing agents. Maintain ambient storage temperature and follow local regulations. Use first-in, first-out stock rotation. |
| Shelf Life | Dow HDPE XZ89609 has a shelf life of 24 months when stored unopened in a dry, cool place away from heat and sunlight. |
Dow HDPE XZ89609 is positioned downstream only in HDPE conversion routes where high molecular weight, melt strength, and environmental stress-crack resistance control end-use failure. The six application segments below state the applicable industry compliance standard, formulation addition ratio, production equipment and process envelope, and terminal finished product type. Where a specific standard clause is cited, the processing variable is anchored to that test method; where published data for a particular XZ89609 configuration is limited, the limitation is stated explicitly rather than extrapolated.
In shuttle blow moulding lines producing 20–25 L UN-rated jerrycans from Dow HDPE XZ89609, the controlling failure mode is slow crack growth in the pinch-off tail and shoulder radius rather than tensile yield. The compliance framework is UN Model Regulations Chapter 6.1 for plastics packagings, ADR 6.1.5.4, IMDG Code Part 6, and ASTM D1693-15 Bent Strip environmental stress-crack resistance using 100% Igepal CO-630 at 50 °C; a result below 200 h is rejected for aggressive surfactant-based agricultural formulations. Formulation addition is 100 wt% XZ89609 in the monolayer wall; where outdoor storage or UV-stabilised articles are required, 5.0 wt% carbon black masterbatch with 40 wt% carbon black in a PE carrier is added to deliver 2.0 wt% actual carbon black. Exceeding 6.0 wt% masterbatch lowers -18 °C drop impact below UN Packing Group II requirements. The production route is intermittent extrusion blow moulding on a shuttle machine with an 80 mm 24:1 L/D grooved-feed extruder, 3.0 kg accumulator head shot capacity, 100-point parison programmer, die head at 200–210 °C, melt temperature 190–210 °C, blow air pressure 0.8–1.0 MPa, and mould coolant at 12–16 °C; a 20 L jerrycan is demoulded at 55–70 s and conditioned for 72 h before UN stack testing. Terminal article types include 20–25 L UN 3H1 jerrycans, 200 L 3H1 open-head drums, and closed-head containers for agrochemical and industrial cleaning concentrates. Minimum wall thickness at the lower chime is held at 2.0 mm; thinner localised sections fail the ADR hydrostatic pressure test at the pressure specified in 6.1.5.4 for the filled product class.
| Compliance standard | Test condition | Acceptance link |
|---|---|---|
| UN Model Regulations Chapter 6.1, ADR 6.1.5.4 | drop, stack, leakproofness, hydrostatic pressure | PG II drop height 1.2 m; PG III drop height 0.8 m |
| ASTM D1693-15 | Bent Strip, 100% Igepal CO-630, 50 °C | >200 h for agrochemical concentrates |
| ASTM D638-22 | Type I specimen, 50 mm/min | tensile yield >20 MPa after wall conditioning |
| EU REACH Regulation (EC) No 1907/2006 Annex XVII | articles placed on EU market | SVHC < 0.1 wt% unless declared |
At What Melt Temperature Does Drop Impact Testing Show Ductile Failure in 250 mL Pharmaceutical Bottles?
Ductile failure at -20 °C in the sidewall of a 250 mL bottle is the qualification gate for pharmaceutical primary packaging when Dow HDPE XZ89609 is run at a 190 °C melt temperature and 0.70 mm minimum wall thickness. The product must meet USP <661.1> and USP <661.2> plastic packaging requirements, Ph.Eur. chapter 3.1.3 Polyolefines, EU Regulation 10/2011/EC overall migration below <10 mg/dm² under simulated drug contact, FDA 21 CFR 177.1520(c), and ISO 15378:2017 for primary packaging components. Formulation addition is 100 wt% XZ89609 with no post-consumer recyclate; if a white bottle is required, 1.0–2.0 wt% titanium dioxide masterbatch with a PE carrier that itself meets 21 CFR 177.1520(c) is used. The production route is intermittent shuttle extrusion blow moulding inside an ISO Class 8 cleanroom, using a 60 mm 24:1 L/D extruder, melt filtration at 60 µm, filtered blow air at 0.2 µm, and 100% vision inspection for gel counts and wall thickness. Terminal article types are 100–500 mL HDPE bottles for solid oral dosage forms and powdered nutritional products; liquid oral syrups above 40 °C fill temperature are excluded because sidewall deformation exceeds dimension tolerances. Gamma irradiation is capped at 25 kGy; above that dose, oxidative chain scission reduces notched Izod impact below 12 kJ/m² and increases extractables above the Ph.Eur. 3.1.3 limit. Published data for XZ89609 in blow-fill-seal pharmaceutical lines is limited; the above parameters refer to conventional intermittent extrusion blow moulding qualification.
Multilayer Fuel Tank Layer Distribution and Hydrocarbon Permeation Limits
Historically, monolayer HDPE fuel tanks exceed 20 g/m²/day hydrocarbon permeation at 40 °C; a continuous EVOH layer reduces total permeation below 2 g/m²/day only if the barrier is not ruptured in the parison pinch-off. Compliance is governed by UN ECE R34 Annex 5 for plastic fuel tanks, US EPA 40 CFR Part 86 evaporative emission provisions, CARB LEV III hydrocarbon permeation limits, and SAE J1737 for permeation testing. In the HDPE-bearing layers, XZ89609 represents 85–90 wt% of total tank mass; regrind from edge trims is introduced at 30–40 wt% of the HDPE mass, with a maximum of 40 wt% because notched Izod impact at -30 °C otherwise falls below 20 kJ/m². The tie resin is maleic anhydride-grafted LLDPE at 2–3 wt% of total tank mass, and EVOH with 32 mol% ethylene content is used at 1.5–2.5 wt% of total tank mass.
| Layer sequence | Material | Thickness share (%) | Function |
|---|---|---|---|
| 1 | XZ89609 outer skin | 12–15% | impact protection and surface finish |
| 2 | XZ89609 regrind layer | 30–40% | rework absorption and stiffness |
| 3 | Maleic anhydride-grafted LLDPE tie | 2–3% | adhesion to EVOH |
| 4 | EVOH 32 mol% ethylene | 1.5–2.5% | hydrocarbon barrier |
| 5 | Maleic anhydride-grafted LLDPE tie | 2–3% | adhesion to inner HDPE |
| 6 | XZ89609 inner skin | 35–45% | chemical resistance and pinch-off integrity |
The production route is six-layer coextrusion blow moulding on a rotary machine with 90 mm HDPE extruders, 45 mm tie-layer extruder, 35 mm EVOH extruder, an 8-head accumulator, 100-point radial parison programmer, melt temperatures 210–225 °C, die head at 220 °C, blow air pressure 1.2 MPa, and mould temperature 8–12 °C. Terminal article types are passenger vehicle fuel tanks from 45 L to 80 L, including off-road equipment tanks. The pinch-off weld is tested for burst and impact according to ECE R34 Annex 5; no amine-based processing additives are allowed in the regrind stream because amine residues react with EVOH to form gel build-up at the die lips and reduce barrier continuity.
On a 1,200 kg/h corrugated HDPE pipe line running XZ89609 for 800 mm storm sewer, the processing limit is melt-strength retention in the narrow web between corrugation crests when melt temperature exceeds 230 °C; the webs then sag inward and reduce internal diameter below the ASTM F2306/F2306M minimum. Compliance is against ASTM F2306/F2306M for 300–1,500 mm annular corrugated profile-wall polyethylene pipe, AASHTO M294, EN 13476-3, and ISO 9969 for ring stiffness. The polymer blend comprises 85 wt% XZ89609 and 15 wt% post-industrial regrind; to this blend, 5.0–6.0 wt% carbon black masterbatch with 40 wt% carbon black is added to meet ASTM D3350 cell classification 435400C. Carbon black masterbatch above 6.0 wt% depresses -20 °C tensile impact below the AASHTO M294 requirement. The production route is single-screw extrusion at 30:1 L/D with vacuum degassing, 100-mesh screen change, die head pressure 20–35 MPa, followed by a vacuum corrugator with internal air cooling and a two-axis puller set to 0.8 m/min for 800 mm pipe. Terminal article types include 300–1,500 mm storm sewer culverts, agricultural drainage pipe, and roadside subdrain. The liner wall thickness is held at 1.5–2.5 mm, and corrugation pitch is adjusted to maintain initial ring stiffness above 2 kPa after the 24 h conditioning specified in ISO 9969. Published data for XZ89609 in high-output corrugated pipe lines is limited; the regrind ceiling is therefore validated on each lot by ISO 9969 ring stiffness and ASTM D638-22 tensile yield.
When Carbon Black Masterbatch Let-Down Falls Below 2.0 wt% in 1.0 mm Geomembrane
Because HDPE geomembrane seams are field-tested by vacuum box and spark testing after wedge welding, a carbon black masterbatch let-down below 2.0 wt% creates under-concentrated zones that can behave as low-density weld paths under liner stress. For a 1.0 mm smooth geomembrane based on Dow HDPE XZ89609, the product specification is GRI-GM13, with stress-crack resistance evaluated by ASTM D5397 single-point notched constant tensile load at 50 °C; a pass is defined as >200 h at 30% of yield stress. Formulation addition is 93.0–95.0 wt% XZ89609, 4.5–6.5 wt% carbon black masterbatch with 45 wt% carbon black in a PE carrier, and 0.3–0.6 wt% antioxidant stabiliser masterbatch; no calcium carbonate filler is permitted because it creates notches that reduce ASTM D5397 failure time below 200 h. The production route is flat-die sheet extrusion using a 150 mm 30:1 L/D extruder, die width 2.5 m, polished three-roll calender at 70–85 °C, beta-thickness scanning across 0.75–3.0 mm, and automatic winding at 150–200 N tension. The terminal article types are smooth HDPE geomembranes for landfill basal liners, secondary containment, tailings pads, and evaporation ponds. Wedge welding of 1.0 mm sheet is operated at 420–450 °C with 2.5 m/min travel speed; below 400 °C, peel separation drops below 90% of sheet yield strength.
Thermoformed reusable dunnage produced from 4 mm HDPE sheet exposes a competing requirement: the high melt strength of XZ89609 permits draw ratios up to 1:1.2 in female tools, but sheet surface temperature above 170 °C causes sag greater than 40 mm over a 1,200 mm span and thins the corner sections below 0.8 mm. The compliance field for this segment is EU REACH Regulation (EC) No 1907/2006 Article 33 for SVHC declarations on returned packaging placed on the EU market, and RoHS Directive 2011/65/EU only when the tray is integrated into an electrical/electronic product shipment; ASTM D638-22 and ISO 1183-1 are used for incoming sheet qualification. Formulation addition is 70–80 wt% XZ89609, 20–30 wt% post-industrial HDPE regrind from edge trim, plus 5.0 wt% carbon black masterbatch with 40 wt% carbon black on the polymer blend; the regrind fraction above 30 wt% narrows the thermoforming window from ±5 °C to ±2 °C and produces warpage after demoulding. The production route starts with sheet extrusion at 200–230 °C through a 1,200 mm coat-hanger die, a three-roll polishing stack at 60–80 °C, and 3.0–6.0 mm sheet; thermoforming is run on a double-station vacuum machine with plug assist speed of 150 mm/s and mould temperature 70 °C. Terminal article types include returnable automotive dunnage trays, battery transport trays, and separator sheets for stamped metal components. Published data for XZ89609 in high-regrind thermoformed sheet is limited; the 30 wt% regrind ceiling is therefore validated by ASTM D638-22 tensile yield and ISO 1183-1 density measurements on each production lot.
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- Dow HDPE XZ89609 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.
Dow HDPE XZ89609 is a high-density polyethylene grade identified under ASTM D4976 as a polyolefin molding and extrusion material. The product falls within the HDPE density band of 930 kg/m³ to 970 kg/m³ defined by ISO 1183-1, but certified lot-specific density, melt flow rate, tensile, and impact values must be taken from the release certificate. Publicly available data for this specific product designation is limited; properties should not be inferred solely from class averages or from non-equivalent HDPE grades. Where regulatory contact is claimed, the grade must be verified against FDA 21 CFR 177.1520 and EU Regulation No 10/2011. The material is supplied as a high-density ethylene polymer; differentiation from lower-density polyethylene and standard HDPE grades is principally observed through molecular architecture, shear sensitivity, and long-term load-bearing behavior rather than density alone.
What distinguishes XZ89609 from conventional unimodal HDPE grades?
Conventional unimodal HDPE grades usually have a narrow molecular weight distribution and a limited high molecular weight mass fraction. Where manufacturer documentation identifies XZ89609 as having a broader or bimodal distribution, the resulting rheological signature is measured by melt flow ratio under ISO 1133-1:2022 using 21.6 kg and 5 kg loads. A higher ratio indicates greater shear thinning and higher zero-shear viscosity. This translates to improved parison sag resistance and higher melt strength in extrusion blow molding, but it also increases extruder motor load and melt pressure at equivalent throughput. Production equipment with L/D ratios of 30:1 to 40:1 and barrier screws can process broad-MWD HDPE, yet screw speed and barrel temperature profiles must be adjusted when transitioning from a narrow-MWD grade. The practical difference is observed in part wall distribution, frozen-in stress, and slow crack growth resistance rather than in room-temperature modulus alone.
During high-shear extrusion and accumulator blow molding, the die land length and tooling pressure interact with the molecular weight tail. A typical HDPE melt temperature window of 200 °C to 230 °C is used in blow molding, but the grade-specific upper limit must be confirmed for XZ89609 to minimize thermal degradation and antioxidant consumption. Residence time above 250 °C should be limited because oxidative stabilizers decompose rapidly. When a narrow-MWD grade is replaced by a higher melt strength HDPE, the resulting increase in head pressure can require widening the die gap by 0.2 mm to 0.5 mm to maintain stable parison diameter and reduce melt fracture. This adjustment should be performed incrementally and validated by measured parison length, weight, and wall thickness profile, not by visual surface quality alone.
Swell, sag, and wall-thickness stability in large-part blow molding
Large-part blow molding performance is governed by annular die swell, parison hang time, and sag resistance. A broad molecular weight distribution delays elastic recovery in extensional flow, altering the parison diameter and wall thickness distribution before mold closure. In industrial packaging and technical hollow parts, high-load melt flow and molecular weight tail are more meaningful than melt flow index alone. Typical air pressure levels of 0.6 MPa to 1.0 MPa and mold temperatures of 10 °C to 40 °C are used for HDPE blow molding; these parameters are equipment-dependent and must be transferred from the material technical data sheet. A material with higher sag resistance produces fewer thin top corners and more uniform pinch-off, but the tooling must have sufficient mandrel adjustment to compensate for altered swell.
Processing interruptions expose the thermal boundary more than continuous operation. Purging, shutdown, and start-up cycles can accumulate oxidized polymer at the screw root and die lip. For HDPE grades with a pronounced high molecular weight fraction, a purge transition to a lower-viscosity polyethylene is recommended before shutdown. A purge resin with melt flow rate at least 1.5× to 2.0× the target melt index reduces residual material and pressure. Barrel temperatures should be reduced stepwise to 160 °C to 180 °C before extended idle; the screw should not be left at full processing temperature. These boundaries derive from general HDPE extrusion practice and may be superseded by XZ89609-specific processing guidance.
Mold temperature control in thick-walled blow molded parts is a rate-limiting step. HDPE crystallizes rapidly at high density, and cooling times scale with part thickness squared; the practical consequence for production is a reduction in cycle time when mold temperatures are lowered from 30 °C to 15 °C. However, too low a mold temperature can freeze surface layers and promote sink marks and warpage. The temperature boundary is not uniform; it depends on part thickness, tooling steel, and cooling channel layout. Conformal cooling channels with 10 mm to 15 mm diameter and controlled turbulent flow are required to maintain heat removal across large surfaces. Validation of mold cooling is performed through infrared thermography after ejection, with temperature differentials above 5 °C across the part surface indicating non-uniform shrinkage.
Dimensional stability after demolding is controlled by crystallization rate and cooling uniformity. In extrusion blow molded industrial containers, post-mold shrinkage of 0.8% to 1.5% in the machine direction and 0.5% to 1.0% in the transverse direction is typical for HDPE, but rates vary with molecular weight and part geometry. Shrinkage measurements should be made after 24 h at 23 °C and 50% relative humidity following ISO 294-4. Grade-specific shrinkage for XZ89609 may differ; pilot mold trials should establish cavity dimensions. Parts with high crystallinity may exhibit differential shrinkage at bosses and ribs, causing warpage if mold cooling is not balanced.
When regulatory contact and long-term hydrostatic pressure are combined
When regulatory contact and long-term hydrostatic pressure are combined, material selection should not rely on short-term tensile data alone. HDPE used in potable water and chemical containment is evaluated for creep rupture, slow crack growth, and environmental stress crack resistance. Relevant test methods include ISO 9080 for plastic piping systems, ASTM D2837 for hydrostatic design stress, ASTM D1693 for environmental stress crack resistance, and ISO 22088-2 for constant tensile stress cracking under specific media. For XZ89609, potential contact applications must be validated against manufacturer certification and lot-specific test data; published data for this specific configuration is limited. Antioxidant presence is not equivalent to long-term chemical resistance, particularly in chlorinated water systems where disinfectant oxidation can accelerate brittle failure if stabilization is insufficient.
| Regulatory instrument | Scope | Standard designation or test method |
|---|---|---|
| Food contact in the United States | Olefin polymers for direct and indirect food contact | FDA 21 CFR 177.1520 |
| Food contact in the European Union | Plastic materials and articles intended to contact food | EU Regulation No 10/2011 |
| Chemical safety in the European Union | SVHC communication and restriction obligations | REACH EC 1907/2006, Article 33 |
| Electrical and electronic equipment restrictions | Lead, cadmium, mercury, hexavalent chromium, PBB, PBDE, four phthalates | RoHS Directive 2011/65/EU |
| Polyethylene classification | Molding and extrusion material specification | ASTM D4976 |
Material handling for HDPE XZ89609 follows standard polyolefin practice but must include moisture and static control. HDPE is not highly hygroscopic, yet surface moisture can accumulate on cold resin during warehouse-to-plant transitions. At relative humidity above 60%, pre-drying at 80 °C for 2 h is a common preventive boundary; hopper dryer settings should be confirmed for the grade. Avoid blending with amine-based additives that may interfere with catalyst residues or stabilization. Storage should exclude UV exposure over extended periods because HDPE undergoes chain scission and embrittlement if not formulated with adequate UV stabilizer. Reclaimed material of undefined history should not be combined with high-performance XZ89609 without retained carbon black or UV-stabilizer verification.
In sheet and profile extrusion evaluation, XZ89609 should be characterized through capillary rheometry under ISO 11443 at 190 °C, 210 °C, and 230 °C. The apparent viscosity curve can identify whether viscosity falls steeply enough to maintain throughput without exceeding motor amperage. In sheet extrusion, polish roll temperatures of 75 °C to 95 °C are commonly used for HDPE, but the exact settings depend on sheet thickness and line speed. Differences from general-purpose HDPE may appear as higher melt temperature at the die due to viscous dissipation, requiring lower screw speed or deeper melt channel design. Cooling roll gap must be set to prevent trapped air or platelets, particularly when the product is later thermoformed or welded.
Environmental stress crack resistance is sensitive to residual stresses, chemical exposure, and molecular architecture. Molded stress from improper demolding or forced ejection can reduce ESCR even when the base resin has higher resistance than a standardized test plaque. Evaluation of containers exposed to surface-active agents, hydrocarbon-based solvents, or aggressive cleaning chemicals should include full-part testing under service conditions, not only laboratory bent-strip coupons. The standardized ESCR test under ASTM D1693 is an initial screen but does not capture processing-induced stress concentration at weld lines and parting lines. A part-level test using internal pressure and environmental exposure at 50 °C to 80 °C is more relevant for load-bearing industrial packaging.
Coextrusion compatibility with other polyolefin layers depends on melt viscosity matching. When XZ89609 is evaluated in multilayer structures, the viscosity curves of adjoining layers should intersect within the practical shear rate range at the die; large mismatches produce interfacial instability, layer thickness variability, and delamination. Capillary rheometry under ISO 11443 at shear rates of 100 s⁻¹ to 1000 s⁻¹ can be used to select compatible tie resins and outer skin materials. The difference between broad-MWD HDPE and narrow-MWD grades is often more visible in coextrusion than in monolayer processing because viscosity mismatch amplifies small melt temperature differences. Maintain die temperatures within ±5 °C across zones to prevent local layer nonuniformity.
Low-temperature impact resistance of HDPE is often related to molecular weight and comonomer incorporation. Unimodal grades may meet a notched impact value at 23 °C under ISO 180 but lose energy absorption sharply at -30 °C. Broader distribution HDPE grades with controlled short-chain branching maintain toughness over a wider temperature range, provided that the cooling rate and wall thickness are not excessive. For XZ89609, chilled dart impact testing under ISO 7765-1 or notched Izod under ISO 180/A should be generated from molded or extruded specimens. The absence of such product-specific data requires conservative design factors; published data for this specific configuration is limited.
Differentiation from other HDPE grades should be performed using a matrix of short-term and long-term properties. Room-temperature density, melt flow rate, and tensile yield stress under ISO 527-2 may not distinguish grades with different molecular weight distribution; slow crack growth and hydrostatic strength are more discriminating. For replacement projects, the comparative test set should include ASTM D256 notched impact, ASTM D790 or ISO 178 flexural modulus, ASTM D1693 environmental stress crack resistance, and dynamic rheology sweep under ISO 6721-10. Published data for XZ89609 in specific end-use configurations is limited, so pilot-scale trials are required before production changeover. The acceptable operational window should be expressed in terms of melt temperature, screw speed, and die pressure, not solely in density and flow rate.
