| HS Code | 666277 |
| Density | 1.35 g/cm³ |
| Tensile Strength | 60 MPa |
| Tensile Elongation | 5% |
| Flexural Strength | 90 MPa |
| Flexural Modulus | 3.5 GPa |
| Notched Izod Impact Strength | 4 kJ/m² |
| Heat Deflection Temperature At 1 82 Mpa | 90 °C |
| Heat Deflection Temperature At 0 45 Mpa | 120 °C |
| Melting Point | 170 °C |
| Glass Transition Temperature | 60 °C |
| Ul94 Flame Rating | V-0 |
| Volume Resistivity | 1 × 10^16 Ω·cm |
| Dielectric Constant At 1 Mhz | 3.0 |
| Mold Shrinkage | 0.4–0.6% |
| Water Absorption | 0.1% |
As an accredited Ecodear V751X52 Flame Retardant Nano Alloy Polylactic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Ecodear V751X52 typically comes in 25 kg moisture-barrier paper bags, palletized and shrink-wrapped, or 1,000 kg bulk jumbo bags. |
| Container Loading (20′ FCL) | 20′ FCL loading: Ecodear V751X52 flame-retardant nano alloy polylactic acid in palletized, shrink-wrapped bags, securely strapped for safe ocean transport. |
| Shipping | Ecodear V751X52 Flame Retardant Nano Alloy Polylactic Acid is generally shipped as non-hazardous, non-regulated solid resin pellets. Use clean, dry, sealed packaging in a cool, ventilated area. Protect from moisture, heat, sunlight, and contamination. No UN hazard class or transport label normally required; always follow the supplier’s SDS. |
| Storage | Store Ecodear V751X52 Flame Retardant Nano Alloy Polylactic Acid in a cool, dry, well-ventilated area away from direct sunlight, heat, sparks, and open flames. Keep containers tightly sealed, palletized, and protected from moisture, dust, and physical damage. Avoid contact with strong acids, bases, and oxidizing agents. Maintain stable ambient temperature, observe shelf life, use grounding/bonding if dust forms, and follow local regulations. |
| Shelf Life | Typically 12 months from manufacture when stored unopened in a cool, dry, well-ventilated area, protected from moisture and direct sunlight. |
Ecodear V751X52 is supplied as a flame-retardant nano alloy polylactic acid pellet for thin-wall indoor electronic enclosures. In this downstream segment, the material replaces PC/ABS in wall chargers, power banks, Wi-Fi router housings, smart speaker cabinets, and smoke detector bases where fire enclosure provisions of IEC 62368-1:2023 apply and a UL 94 V-0 classification at 1.5 mm plaque thickness is specified. The compound is processed at 100 wt% as received; no external flame-retardant masterbatch or intumescent additive should be let down because dilution below 85 wt% resin content alters phosphorus-nitrogen char formation and invalidates the listed burn class. Pre-drying is mandatory in a desiccant dryer at 80 °C for 4–6 h to reduce residual moisture to 250 ppm or lower; production lots with moisture above 400 ppm exhibit splay, screw-slip pressure fluctuations, and hydrolysis-induced melt viscosity reduction. Injection molding is performed on an electric screw machine with screw L/D 20:1–24:1, compression ratio 2.2:1–2.8:1, and non-return valve clearance controlled below 2 mm. Melt temperature is held at 190–205 °C, mold temperature at 25–35 °C, back pressure at 0.5–1.0 MPa, and total residence time below 6 min to suppress thermal degradation of the nano alloy. Terminal molded products are charger housings, power bank enclosures, router shells, smart speaker baffles, and detector bases. The resin is not intended for continuous service above 60 °C or for outdoor UV-exposed parts; a UL 94 V-0 enclosure rating does not, on its own, demonstrate glow-wire or tracking performance under IEC 60695 or IEC 60112.
Automotive interior low-voltage modules—USB charging socket frames, ambient lighting housings, HVAC control bezels, and seat heating switch covers—require horizontal burn-rate control under FMVSS 302 and ISO 3795:1989, with maximum burn rate not exceeding 102 mm/min. The V751X52 resin is used at 100 wt%; regrind is tolerated up to 15 wt% only when sourced from identical-viscosity lots, because higher regrind fractions reduce the melt strength of the nano alloy and cause weld-line brittleness in bezel corners. Production-scale injection molding on a 450 kN clamp machine with wall thickness 1.2–2.0 mm requires gate placement away from visible surfaces and vent depths of 0.015–0.02 mm to prevent gas burn marks. Mold temperature is controlled at 30–40 °C; melt temperature remains 190–205 °C. Melt-flow verification under ISO 1133-1:2022 at 210 °C and 2.16 kg is used to monitor batch-to-batch variation; a typical unfilled FR-PLA window is 6–15 g/10 min, and lots outside this band require compensation in pack pressure and injection velocity. Finished components include USB charging module frames, ambient light guide housings, HVAC control faceplates, and seat heating switch bezels. The material is not assigned to upper dashboard skins or sun-exposed trim; heat deflection temperature under ISO 75 lies near 55–60 °C, and post-mold annealing is required only if dimensional stability above 60 °C is specified.
| Compliance dimension | Test method | Acceptance threshold | Representative terminal part |
|---|---|---|---|
| Fire enclosure flammability | IEC 60695-11-10:2021 / UL 94 equivalent | V-0 at 1.5 mm | Wall charger, router housing |
| Automotive interior horizontal burn | ISO 3795:1989 / FMVSS 302 | Max 102 mm/min | USB module frame |
| Glow-wire flammability | IEC 60695-2-11:2021 | 750 °C or 850 °C per IEC 60335-1:2020 Clause 30.2 | Appliance bezel |
| Tracking resistance | IEC 60112:2020 | CTI verified on plaque; no reduction without data | Wall plate |
| Material compliance | RoHS Directive 2011/65/EU Annex II | Below maximum concentration values | All electronic housings |
Filament extrusion trials with the same pellet produce 1.75 mm and 2.85 mm flame-retardant PLA monofilament for fused deposition modeling of fire-rated electrical prototypes and short-run assembly fixtures. The pellet is metered at 100 wt%; addition of processing aids above 1.5 wt% is not recommended because it destabilizes diameter control and reduces interlayer fusion. Compliance for printed components is not inherited from a V-0 pellet alone; printed slabs are evaluated under IEC 60695-11-10:2021 at the printed wall thickness, and void content above 2% can promote wicking and afterglow. Extrusion is carried out on a single-screw machine with L/D 24:1, melt pump, 40–60 mesh screen pack, water trough cooling at 40–50 °C, and laser micrometer control to 1.75 ± 0.05 mm. The resin is pre-dried to 200 ppm moisture or lower; moisture above this threshold causes foaming in the hot end. Terminal products are jigs, fixture bases, electronic component trays, connector alignment blocks, and low-volume printer internal brackets. The material is not suitable for printed parts under continuous mechanical load; interlayer adhesion varies with chamber temperature and print speed, and published data for this specific FR filament configuration is limited.
Office automation equipment enclosures—printer side covers, scanner bases, paper tray frames, and internal fan shrouds—are produced by injection molding with fire enclosure requirements under IEC 62368-1:2023 and UL 94 V-0 at 1.5 mm. The resin is processed without dilution; regrind ratio is capped at 20 wt% because higher regrind content shifts the melt viscosity downward and can produce a burn-class cliff edge at thin ribs. Large flat trays with wall thickness 2.0–2.5 mm require a hot runner manifold balanced within ±1 °C; cold runner sprues and gates above 2.0 mm diameter extend gate freeze-off and increase cycle time. Melt temperature is held at 190–205 °C, mold temperature at 25–35 °C, and cooling time at 20–30 s for a 2.0 mm wall. Production-scale trials on unvented screw machines with L/D 20:1 have produced splay and brown streaks when melt temperature exceeds 210 °C or moisture exceeds 300 ppm. Vent grooves of 0.015–0.02 mm depth are recommended before the compression zone. Terminal parts include printer side covers, scanner bases, paper guide brackets, cooling fan shrouds, and projector housing covers. The matrix is not intended for drop-test-critical housings; notched Izod impact strength under ISO 180 typically falls in a low-energy range near 2–4 kJ/m², and rib root radii below 0.5 mm should be avoided.
For small household appliance control enclosures, the decisive test is not UL 94 alone but glow-wire resistance under IEC 60695-2-11:2021 and the heat-and-fire provisions of IEC 60335-1:2020 Clause 30.2. The V751X52 pellet is used at 100 wt%; high-gloss control bezels should not be blended with release agents above 0.3 wt% because such additives can accumulate on the surface and change glow-wire ignition behavior. Injection molding is performed on cold runner tools for air purifier control panels, cordless vacuum cleaner handle covers, rice cooker bezels, and kettle switch covers. Mold temperature is maintained at 30–40 °C, packing pressure at 80–100 MPa, holding time at 5–8 s, and melt temperature at 190–205 °C. Residence time above 6 min must be avoided because the nano alloy undergoes thermal hydrolysis in the barrel, generating lactic acid oligomers and reducing char-forming efficiency. Glow-wire acceptance temperatures of 750 °C and 850 °C are both encountered depending on appliance type, current level, and supervision category; actual conditions must be read from IEC 60335-1:2020 Clause 30.2. The terminal products exclude components in direct contact with heating elements or surfaces above 60 °C. Heat deflection temperature under ISO 75 remains near 55–60 °C unless the part is annealed, and annealing can introduce shrink warpage in thin walls.
| Processing variable | Lower bound | Upper bound | Measurement/control method |
|---|---|---|---|
| Pre-drying temperature | 80 °C | 80 °C | Desiccant dryer, dew point -40 °C |
| Pre-drying time | 4 h | 6 h | Dryer timer |
| Residual moisture | 200 ppm | 250 ppm | Karl Fischer per ISO 15512 |
| Melt temperature | 190 °C | 205 °C | Pyrometer / infrared melt probe |
| Mold temperature | 25 °C | 35 °C | Mold thermocouple |
| Back pressure | 0.5 MPa | 1.0 MPa | Machine hydraulic pressure |
| Screw L/D | 20:1 | 24:1 | Machine specification |
| Residence time | — | 6 min | Shot-to-shot timer |
Indoor mounting frames, modular faceplates, junction box covers, switch frames, and blanking plates fall under IEC 60670-1 and IEC 60884-1 where glow-wire resistance, ball pressure, and tracking resistance determine the minimum wall thickness. The resin is processed at 100 wt%; laser-marked surfaces can reduce local wall thickness below 1.0 mm, and such zones must be revalidated because the UL 94 V-0 listing is thickness-dependent. Glow-wire testing under IEC 60695-2-11:2021 is commonly specified at 850 °C for live parts enclosures; ball pressure under IEC 60695-10-2:2014 is performed at 125 °C on finished surface layers. Tracking resistance is evaluated under IEC 60112:2020; published CTI data for this exact compound in sub-1.0 mm wall plate configurations is limited, so pre-production plaque testing is required before creepage distances are reduced. Injection molding uses central or fan gate positions, melt temperature 190–205 °C, mold temperature 25–35 °C, and packing pressure 60–80 MPa. Hot runners are not preferred for short color-change production because residence time control is difficult. Terminal products include Euro and BS modular faceplates, junction box covers, switch frames, and blanking plates. Outdoor installation and UV exposure are excluded; the PLA matrix is hydrolytically sensitive, and continuous service above 60 °C is not recommended.
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Ecodear V751X52 is classified as a flame-retardant nano-alloy polylactic acid compound supplied in pellet form. The grade belongs to the Ecodear family of bio-based engineering resins and is directed at injection-molded enclosures, internal covers, and structural components for electrical and electronic assemblies. The material combines a semicrystalline PLA matrix with a dispersed nano-scale alloying phase, so its conversion behavior differs from both unfilled PLA and conventional halogen-free flame-retardant PLA compounds. Successful processing requires strict control of granule moisture, barrel residence time, and mold temperature because the polyester backbone is hydrolytically sensitive and the nano-alloy morphology can be damaged by excessive shear. Published open-source English-language datasheets for this specific configuration are limited; the current manufacturer technical data sheet or certificate of compliance should therefore be regarded as the controlling specification for lot-specific values.
Unmodified PLA typically exhibits high stiffness but brittle failure under notched impact, with notched Charpy values often below 5 kJ/m² in the absence of modification. Heat deflection temperature can remain below 60 °C under a 0.45 MPa flexural stress unless nucleation and annealing are applied. The nano-alloy route is intended to overcome these limits by creating a dispersed phase that suppresses crack coalescence and increases energy absorption per unit volume. Under tensile loading, the dispersed phase can function as a craze initiator, while under flame exposure it may contribute to char formation and melt-viscosity retention. In comparison with glass-fiber-reinforced PLA, the nano-alloy grade generally preserves lower density and smoother surface finish; in comparison with talc-filled PLA, it offers improved ductility. Against flame-retardant PC/ABS, Ecodear V751X52 generally has a lower processing melt temperature and a bio-based carbon fraction, but it does not match PC/ABS in all mechanical and thermal service conditions.
The exact nano-scale domain size is usually proprietary, but dispersion is commonly verified by transmission electron microscopy after cryo-ultramicrotomy. Incoming-quality control should include melt flow rate measurement and a small-scale molding trial because batch-to-batch shifts in domain size can alter impact response. The difference from conventional flame-retardant PLA compounds is therefore not simply a formulation change; it is a metastable morphology that must be preserved through compounding, drying, and injection molding.
On production-scale twin-screw compounding lines with L/D ratios of 40:1 to 48:1 and segmented screw elements, the order of addition is critical to dispersing the nano-alloy phase without degrading PLA. The flame-retardant component is normally introduced downstream through a side feeder after the matrix is molten, while the alloying component may be fed at the main throat. If all components are fed at the main throat, excessive specific energy input can overheat the melt and reduce molecular weight. Strand pelletizing requires a water bath temperature below 20 °C to prevent pellet deformation and water absorption. After pelletizing, the product should be packed with a moisture-barrier liner and stored in sealed containers.
In injection molding, the process window is constrained by PLA degradation kinetics and the shear sensitivity of the nano-alloy domains. A closed-loop desiccant dryer with a dew point of at least -30 °C is recommended. Pellets should be dried at 80 °C for 4 h to 6 h; the residual moisture target is below 250 ppm by mass according to ISO 15512. If the granulate is exposed to relative humidity above 60 %, drying becomes mandatory because residual water hydrolyzes the polyester backbone during plasticating. Injection molding machines with a general-purpose screw having an L/D ratio of 20:1 to 24:1 and a compression ratio of 2.0:1 to 2.5:1 are generally suitable. Nozzle melt temperature is commonly maintained between 190 °C and 220 °C; sustained temperatures above 230 °C should be avoided. Mold temperature may be controlled between 25 °C and 60 °C. The lower boundary favors short cycles, while the upper boundary increases crystallinity and improves heat resistance at the expense of longer cycle time. For wall thickness below 1.2 mm, higher mold temperature and fast injection speed may be required, but excessive shear in the gate can reduce molecular weight and affect flame retardancy.
| Property | Preferred test method | Unit | Typical verification target |
|---|---|---|---|
| Density | ISO 1183-1:2019 | g/cm³ | Report against supplier datasheet |
| Melt flow rate | ISO 1133-1:2022 | g/10 min at 210 °C, 2.16 kg | Compare dried pellet lot |
| Tensile strength and modulus | ISO 527-1/-2 | MPa | Report yield or break values |
| Flexural modulus | ISO 178 | MPa | Report modulus |
| Notched Charpy impact | ISO 179-1/1eA | kJ/m² | Report at 23 °C |
| Heat deflection temperature | ISO 75-1/-2 | °C | Report at 0.45 MPa and 1.80 MPa |
| Flammability classification | UL 94 | V rating | Confirm minimum certified thickness |
| Bio-based carbon content | ASTM D6866 | % pMC | Verify biocarbon fraction if specification requires |
The V-series has been represented in manufacturer literature as halogen-free; processors requiring halogen-free certification should request lot-level test data using IEC 61249-2-21 for total chlorine and bromine thresholds. RoHS compliance is normally demonstrated by test methods such as IEC 62321-5 for cadmium, IEC 62321-6 for lead, and IEC 62321-7-2 for hexavalent chromium. These certifications are boundary conditions for electrical and electronic equipment rather than replacements for UL 94 flammability classification.
For enclosure applications, flame retardancy is assessed through a combination of ignition resistance, burning time, dripping behavior, and char strength. The UL 94 vertical burn test fixes a specimen of defined thickness and applies a calibrated flame. A V-0 classification requires total afterflame time limits and no flaming drips that ignite the cotton indicator. Specifically, V-0 requires an afterflame time of not more than 10 s per specimen and a total afterflame time of not more than 50 s across five specimens; afterflame plus afterglow after the second flame application must not exceed 30 s for any specimen. V-1 permits longer afterflame intervals, while V-2 permits flaming drips that ignite the cotton. Because the rating is thickness-dependent, a material that achieves V-0 at 2.0 mm may not achieve V-0 at 0.75 mm. Ecodear V751X52 is designated as flame retardant; the minimum wall thickness for which a V-0 rating is claimed must be verified from the current technical data sheet or certificate of compliance because published data for this specific configuration in open English-language sources are limited.
Thermogravimetric analysis can be used as a supplementary incoming-quality control. A shift in decomposition onset under nitrogen at a heating rate of 10 °C/min may indicate flame-retardant lot variation. Cone calorimetry according to ISO 5660-1 at 50 kW/m² irradiance provides peak heat release rate and time to ignition; published data for V751X52 specifically may be limited, so molders requiring these values should request batch-specific testing. The nano-alloy morphology participates in flame retardancy by affecting melt viscosity and char integrity. If the dispersed phase is over-sheared during compounding or molding, the melt viscosity at the burning surface may decrease and dripping may reappear in the UL 94 test. Incoming pellets should therefore be checked by melt flow rate and verified by a small-scale injection molding trial before production startup.
Thin-wall parts with flow length to wall thickness ratios above 100:1 are sensitive to gate location, packing, and melt temperature. Fan gates and tab gates are preferred over pinpoint gates because they distribute flow and reduce orientation. The mold should be designed with adequate venting along flow fronts to avoid burn marks and short shots in ribs and bosses. A hot runner is possible, but the residence time of PLA in the hot runner channel should be minimized; dead spots can cause discoloration and degradation. Holding pressure and packing time influence shrinkage and warpage. Semicrystalline PLA compounds develop crystalline domains during controlled cooling; uncontrolled cooling can create density gradients and bowing. For parts that require maximum heat resistance, post-mold annealing at 80 °C to 100 °C for 1 h to 2 h may be employed, but this operation changes part dimensions by up to several tenths of a percent and is not universally applicable. The final service temperature should be based on ISO 75-1/-2 at the relevant stress level and on long-term heat aging according to ISO 4577 or UL 746B if the part is an electrical enclosure.
Compared with flame-retardant ABS, Ecodear V751X52 processes at lower barrel set points and can reduce fossil feedstock dependence, but it requires stricter drying and shorter residence time. Compared with flame-retardant PC/ABS, the grade generally offers lower processing energy and a smoother bio-based sustainability profile, but it does not usually match low-temperature impact or continuous-use temperature in load-bearing applications. Compared with polypropylene-based flame-retardant compounds, the PLA nano-alloy provides higher stiffness and lower post-mold warpage in filled configurations, but its hydrolysis sensitivity is greater. These differences should be evaluated using molded specimens from the actual production tool rather than from generic datasheet comparisons.
Because the matrix is a polyester, hydrolytic degradation is the primary humid-service limitation. At sustained relative humidity above 60 % and temperatures above 60 °C, mechanical properties can decline more rapidly than for PC/ABS or flame-retardant ABS. Parts should not be exposed to hot water above 65 °C or strong alkaline cleaners unless validation data exist. Adhesive systems, lubricants, and potting compounds must be screened for compatibility; low-molecular ester plasticizers can plasticize the surface, while nucleophilic amine-containing additives can accelerate ester cleavage. These restrictions are operational boundaries, not product defects, and they are characteristic of PLA-based formulations. The material should not be combined with unapproved regrind from unknown sources, because regrind lot history directly affects molecular weight and flame retardancy. If regrind is used, a maximum of 20 wt% is a common starting point for PLA compounds, but final approval requires molded UL 94 bars and impact specimens from the production blend.
