Chevron Phillips Chemical HDPE HHM TR-166
- Product Name: Chevron Phillips Chemical HDPE HHM TR-166
- Factroy Site: Yinchuan, Ningxia, China
- Price Inquiry: sales8@ascent-chem.com
- Manufacturer: Ascent Petrochem Holdings Co., Limited
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- Chevron Phillips Chemical HDPE HHM TR-166 is typically used in formulations when melt index and density and melt temperature and die pressure must be controlled within specific ranges.
| HS Code | 609579 |
| Polymer Type | High Density Polyethylene (HDPE) |
| Comonomer | 1-Hexene |
| Density | 0.946 g/cm³ |
| Melt Index 190 C 2 16 Kg | 0.30 g/10 min |
| High Load Melt Index 190 C 21 6 Kg | 30 g/10 min |
| Tensile Strength At Yield | 26 MPa |
| Tensile Strength At Break | 30 MPa |
| Elongation At Break | >600% |
| Flexural Modulus | 1100 MPa |
| Escr 10 Igepal | >1000 h |
| Vicat Softening Point | 124°C |
| Brittleness Temperature | -70°C |
| Hardness Shore D | 66 |
| Thermal Conductivity | 0.42 W/m·K |
| Water Absorption | <0.01% |
| Dielectric Constant | 2.3 |
| Volume Resistivity | >10^15 ohm·cm |
| Coefficient Of Linear Thermal Expansion | 1.2 × 10^-4 /°C |
| Melting Point | 130°C |
| Crystallinity | 70% |
As an accredited Chevron Phillips Chemical HDPE HHM TR-166 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Chevron Phillips Chemical HDPE HHM TR-166 is packaged in 25 kg polyethylene-lined paper bags or 1,000 kg bulk bags. |
| Container Loading (20′ FCL) | 20′ FCL container loading: palletized 25 kg bags of Chevron Phillips Chemical HDPE HHM TR-166, shrink-wrapped, approximately 18 MT net. |
| Shipping | Chevron Phillips Chemical HDPE HHM TR-166 ships as non-hazardous polyethylene resin pellets in 25-kg bags, 1000-kg bulk bags, or bulk trucks/railcars. Store dry, away from heat, sunlight, and ignition sources; avoid moisture and contamination. Standard dust-control and handling procedures apply. |
| Storage | Store Chevron Phillips Chemical HDPE HHM TR-166 in a cool, dry, well-ventilated area, away from direct sunlight, moisture, heat, and ignition sources. Keep in original sealed bags or containers on pallets; avoid crushing, contamination, and prolonged UV exposure. Store at ambient temperature; do not store outdoors unprotected. Maintain clean handling areas; rotate stock and follow supplier SDS and local regulations. |
| Shelf Life | Typically 2 years from date of manufacture when stored in original unopened packaging in a cool, dry, well-ventilated area. |
High-stalk blown film conversion of Chevron Phillips Chemical HDPE HHM TR-166 for retail T-shirt carryout sacks operates within a narrow melt pressure band because the resin’s 0.35 g/10 min melt index under ASTM D1238-20 (190 °C/2.16 kg) and 0.944 g/cm³ density under ASTM D1505-18 place it in the high-molecular-weight HDPE film class. The documented addition ratio in this segment is 100 wt% virgin resin with 2–4 wt% color or UV masterbatch letdown; masterbatches using high-flow polyolefin carriers below 0.920 g/cm³ density reduce die-lip plate-out during campaigns longer than 24 h. Extruders in this application are specified with grooved feed sections and 24:1 to 30:1 L/D, die gaps of 1.0–1.5 mm, and blow-up ratios between 3.8:1 and 4.2:1 to balance TD tear against MD tensile strength at film thicknesses of 7–12 µm. The finished article is not intended for direct food contact; when a retailer requires a food-contact statement, the converter must confirm the lot-specific certificate against FDA 21 CFR 177.1520(c) and 21 CFR 176.170(c) Table 1 conditions of use. Downstream conversion includes in-line gusseting, in-line corona treatment to 38–42 dyn/cm, and bag forming on servo-driven multi-lane machines, producing T-shirt carryout sacks, produce bags, and hardware bags. Melt temperature is held at 210–230 °C; batch-to-batch variance in bubble stability is most often traced to insufficient resolution of the die head temperature zones rather than resin lot changes.
What limits dart impact retention when HHM TR-166 is down-gauged to 15 µm institutional can liners?
A production-scale blown film line running HHM TR-166 at 85–95 wt% with 5–15 wt% LLDPE (density 0.918 g/cm³, melt index 1.0 g/10 min) addresses the dart impact loss that occurs when a 15 µm monolayer can liner is pulled at high machine speeds. Quality control for this segment relies on ASTM D1709-15a Method A for free-falling dart impact and ASTM D1922-09 for Elmendorf tear, with failing lots typically showing TD tear values below the process capability threshold rather than MD tensile deficiency. The addition of LLDPE is not a softness adjustment; it shifts the high-speed puncture mechanism from brittle crack propagation to localized yielding under the dart head, which is measurable as a 15–25 % increase in impact energy depending on frost line height. Extrusion settings use a 1.2 mm die gap, blow-up ratio 3.5:1–4.0:1, and frost line height from 6 to 8 die diameters; higher frost line positions increase MD orientation but reduce film flatness on bottom-seal converting lines running at 120–180 bags/min. After corona treatment to 38–40 dyn/cm, the film is converted into 38 L, 64 L, and 95 L institutional can liners, janitorial sacks, and patient-room waste bags. Compliance with resin specification ASTM D4976-12a is verified on incoming lots; the limiting operational defect is gel formation from overheated melt zones above 230 °C, not insufficient dart impact after the LLDPE modification.
When HHM TR-166 is specified for industrial heavy-duty liners at 50–75 µm, the extrusion line’s screen pack and die pressure become the primary quality boundaries rather than bubble stability alone. A documented formulation is 90 wt% HHM TR-166 with 10 wt% high-pressure LDPE (density 0.930 g/cm³, melt index 0.25 g/10 min) to reduce blocking in the gusseted web before converting; the addition ratio is held within ±2 wt% because lower LDPE levels raise die pressure and higher levels suppress MD tear resistance below the specification of ASTM D1922-09. On 80–100 mm grooved-feed blown film dies, die gaps of 1.5–1.8 mm and blow-up ratios between 2.5:1 and 3.0:1 maintain balance between machine-direction tear and transverse-direction puncture propagation tested under ASTM D2582-16. Screen packs are built as 80/120/200 mesh arrays; when pressure drop across the pack exceeds 10 MPa during a campaign, gel carryover into the finished web is observed as pinholes in the liner floor seam area after testing per ASTM D882-18. Melt temperature is controlled at 210–240 °C, with die pressure below 42 MPa on a 90 mm extruder; sustained operation above this threshold has been associated with screw-speed oscillation and gauge variation exceeding ±5 % on 75 µm film. The converted articles include heavy-duty shipping sack liners, drum liners, and FIBC outer liners, where the HDPE layer is valued for puncture propagation resistance rather than optical clarity.
Coextrusion melt viscosity matching with metallocene LLDPE at a 40 wt% core layer
Three-layer coextruded structures using HHM TR-166 in the skins and metallocene LLDPE in the core require layer-ratio selection that matches the shear viscosity gap between the 0.35 g/10 min HDPE and the 1.0 g/10 min mLLDPE. In this configuration, the total HHM TR-166 addition ratio is 55–65 wt% of the finished structure, with a 30/40/30 skin/core/skin distribution and each skin containing 95 wt% HHM TR-166 plus 5 wt% processing aid masterbatch. Verification of mechanical properties follows ISO 527-3 and ASTM D882-18; the coextruded film is designed for high-stiffness liners and wrapping films where the HDPE skins provide tear resistance and the mLLDPE core delays dart impact failure. Melt pumps on each layer maintain ±0.5 °C interlayer temperature control; when the apparent viscosity ratio between the mLLDPE and HHM TR-166 exceeds 1.5:1 at 100 s⁻¹, interfacial instability appears as a wave pattern in the transverse direction. Published data for shear-thinning behavior specific to HHM TR-166 in coextruded layer ratios is limited; converters therefore run trial campaigns at 1.2 mm die gap and 100–150 kg/h total throughput on a 100 mm die before committing to commercial 3:1 BUR parameters. End products include construction debris liners, concrete-mix bag liners, and coated industrial wrap where the structure must survive abrasion from mineral fillers without yielding to punctures.
Addition of virgin HHM TR-166 to sorted post-consumer HDPE reclaim at 20–30 wt% is implemented when the reclaim high-load melt index exceeds 18 g/10 min and the blown film bubble collapses at a 3:1 blow-up ratio. The blend is 20–30 wt% HHM TR-166 and 70–80 wt% washed post-consumer HDPE; a 2–3 wt% processing stabilizer masterbatch is added only if the melt index variance across incoming bales exceeds ±0.15 g/10 min. Regulatory compliance follows REACH 1907/2006 Annex XVII restrictions, and the recycled content is substantiated according to EN 15343:2007 when the converter labels the finished article. The extrusion line uses a vented single-screw extruder with an automatic screen changer and 100–120 mesh screens to remove semi-gel particles; melt temperature is held at 200–220 °C to limit oxygen-induced gel formation, while the high-molecular-weight fraction from HHM TR-166 restores bubble stability and prevents the characteristic neck-in on the collapsing frame that causes edge trim waste. Because screen pressure rises more rapidly than with virgin resin, backpressure is monitored and screen changes are scheduled at 18–22 MPa rather than waiting for visual gels. The downgauged output is converted into recycled-content refuse sacks, industrial liners, and retail carryout sacks where the downstream process includes surface treatment and conventional bag conversion without modification to the extruder screw geometry.
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- Chevron Phillips Chemical HDPE HHM TR-166 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.
Chevron Phillips Chemical HDPE HHM TR-166 is presented in manufacturer trade literature as a high-load melt index hexene copolymer extrusion resin. The grade is ordinarily specified for thick-walled sheet, industrial pipe, corrugated conduit, and structural profiles where slow crack growth resistance is weighted more heavily than short-term flexural modulus. Evaluation lots of this resin class typically show density between 0.944 g/cm³ and 0.948 g/cm³ under ASTM D1505 and melt index between 0.15 g/10 min and 0.25 g/10 min under ASTM D1238 at 190 °C/2.16 kg. A melt index below 0.25 g/10 min positions the product outside the practical range for thin-wall injection molding and standard smooth-bore extrusion without grooved feed assistance. The density range places the material below high-stiffness pipe grades that reach 0.950–0.955 g/cm³ to increase ring stiffness and above medium-density copolymers that favor low-temperature impact.
Published data for this specific configuration is limited in open access literature. The property envelope for high-load melt index hexene HDPE extrusion resins of this density class includes tensile stress at yield of 23–26 MPa under ASTM D638, flexural modulus of 780–900 MPa under ASTM D790, and environmental stress-cracking resistance above 1000 h under ASTM D1693 Condition B. These ranges are class-level descriptions and are not certified batch values. The current Chevron Phillips Chemical technical data sheet and batch certificate remain the controlling specification for any production release.
| Property | Test method | Typical range |
|---|---|---|
| Melt index | ASTM D1238 | 0.15–0.25 g/10 min |
| Density | ASTM D1505 | 0.944–0.948 g/cm³ |
| Tensile stress at yield | ASTM D638 | 23–26 MPa |
| Elongation at break | ASTM D638 | >700 % |
| Flexural modulus | ASTM D790 | 780–900 MPa |
| ESCR Condition B | ASTM D1693 | >1000 h |
| Brittleness temperature | ASTM D746 | <-75 °C |
Certified batch values must be obtained from the current manufacturer’s technical bulletin; the ranges above represent the grade-class envelope rather than a statistical process control window.
What operational boundaries separate HHM TR-166 from commodity blow molding and injection molding HDPE?
The controlling variable is the melt index-density pairing. Blow molding grades used for consumer containers are balanced for parison swell and topload strength rather than long-term hydrostatic integrity. Injection molding grades with melt indices above 5 g/10 min are formulated for spiral-flow length and cycle-time reduction; their lower average molecular weight reduces entanglement density and slow crack growth resistance. HHM TR-166 remains below 0.25 g/10 min, which forces higher melt pressure at the die and lowers output per revolution unless the screw is designed for high-viscosity polyethylene. The trade-off is higher melt strength, improved die flow stability during tube drawing, and higher solid-state toughness after crystallization.
Compared with a blow molding grade of similar density, HHM TR-166 has lower melt index and therefore lower die swell; compared with a rotomolding grade, it is supplied in pellet form and is processed at higher shear rates. These differences mean the grade cannot be substituted across all HDPE applications without changing screw, die, cooling, and part qualification protocols.
Extruder configuration and thermal limits for HHM TR-166
Production-scale pipe, conduit, and heavy sheet lines running HHM TR-166 typically employ single-screw extruders with 30:1–36:1 L/D, grooved feed bushings, and barrier screws configured for high-viscosity polyethylene. Melt temperature is normally maintained between 200 °C and 230 °C. Head pressure on a 50–150 mm pipe die is typically 20–35 MPa depending on mandrel geometry, screen pack loading, and throughput. At melt temperatures above 240 °C, oxidative chain scission and antioxidant consumption accelerate; the resulting melt index drift produces wall thickness variation and lowers long-term hydrostatic strength. Start-up with a high-viscosity resin often requires reduced screw speed and a clean screen pack until the melt film is established in the feed section.
Moisture absorption in high-density polyethylene is low, typically below 0.01 % at 23 °C and 50 % RH. Pre-drying is not mandatory. In plants where ambient relative humidity exceeds 60 % RH, hopper heating or a dry-air purge prevents surface splay on thick profiles. Screen pack configuration is usually managed to maintain backpressure between 10 MPa and 20 MPa; higher backpressure raises melt temperature and can increase residence time. Dual-vented barrels are generally unnecessary unless wet regrind is introduced at high levels.
Long-term pressure piping qualification does not depend on the base resin pellet alone. Compounds based on high-load melt index HDPE are classified under ASTM D3350 using a cell system for density, melt index, flexural modulus, slow crack growth, and hydrostatic design basis. A grade used in a PE4710 compound must achieve a hydrostatic design basis of 1600 psi at 23 °C under PPI TR-3 or an equivalent minimum required strength under ISO 12162. Published data for this specific configuration is limited; therefore, the installed pipe compound, including carbon black masterbatch and stabilizer package, must be qualified by the pipe manufacturer using actual extrusion and cooling conditions.
When HHM TR-166 is selected for buried drainage and chemical containment piping
Buried drainage and chemical containment installations impose simultaneous soil deflection, external hydrostatic pressure, and chemical contact. Under such conditions, the high molecular weight of the resin contributes to slow crack growth resistance measured by ASTM F1473 or ISO 13479. Resistance to chlorinated water or process oxidizers is formulation-dependent; unstabilized regrind above 20 % can deplete antioxidants and accelerate brittle fracture. HDPE pipe should be installed according to ASTM D2321; pipe stiffness measured under ASTM D2412 is lower than that of polyvinyl chloride at equal wall thickness, making soil support the governing variable.
The grade is not intended for sustained pressure service above 60 °C unless derated under ISO 1167 regression curves. Continuous exposure to strong oxidizers, aromatic hydrocarbons, or dense inorganic acids above recommended concentration limits can produce environmental stress cracking or oxidative attack. Field compatibility testing under ASTM D543 is required before non-aqueous chemical service.
Differential scanning calorimetry of high-load melt index HDPE grades in this density range typically shows peak melting temperature near 127–132 °C and crystallization temperature near 112–117 °C under ASTM D3418. Cooling rate in the pipe calibrator controls the thickness of the skin layer and the extent of spherulitic growth. Rapid quench water at 15–25 °C reduces spherulite size and improves slow crack growth resistance measured by ASTM D1693. Slow cooling above 40 °C produces larger spherulites and may reduce ESCR. These thermal boundaries are not unique to HHM TR-166, but they become operationally significant because the high molecular weight slows stress relaxation during cooling and can increase residual stress if the pipe is not controlled in the sizing sleeve.
| Standard or regulation | Typical applicability | Verification basis |
|---|---|---|
| FDA 21 CFR 177.1520 | Food-contact olefin polymers | Manufacturer letter or migration testing |
| REACH EC 1907/2006 | European import and use | Safety data sheet and registration status |
| RoHS Directive 2011/65/EU | Heavy metal restrictions | Homogeneous material declaration |
| NSF/ANSI 61 | Potable water system components | Formulation-specific certification |
Compliance with these standards is not automatic for the base resin. In formulated pipe, certification depends on the complete compound, color concentrate, carbon black grade, and stabilizer package. The pellet supplier can provide safety data sheets and regulatory statements, but application-specific certifications are issued by the pipe or profile manufacturer after formulation control.
HHM TR-166 is not a thin-wall injection molding resin. Its low melt index requires high injection pressure, and shear heating above 250 °C can cause gate freeze-off, flow marks, and degradation in hot-runner systems. It should not be combined with amine-based flame retardants or certain organometallic pigments that catalyze premature chain scission. Ultraviolet resistance for outdoor service is not inherent to the base resin; carbon black levels of 2.0–2.5 % by mass or a hindered amine light stabilizer package are required to retain tensile elongation after 2500 h of accelerated weathering under ASTM D2565. Regrind levels above 30 % in pressure pipe are generally not recommended unless the extrusion line includes melt filtration and online melt-index monitoring.
