| HS Code | 233387 |
| Brand | Unicorn |
| Model | B1279TX |
| Resolution | 2560x1440 |
| Panel Type | IPS |
| Aspect Ratio | 16:9 |
| Ports | HDMI x2, DisplayPort x1 |
| Sync Technology | FreeSync |
As an accredited Unicorn B1279TX factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Unicorn B1279TX is supplied in a 25 kg sealed fiber drum with inner polyethylene liner, ensuring safe containment. |
| Container Loading (20′ FCL) | 20′ FCL shipment of Unicorn B1279TX: drums securely palletized, labeled, and containerized for safe, efficient transport. |
| Shipping | Unicorn B1279TX ships as a hazardous chemical, requiring UN-approved packaging, proper labeling, and SDS documentation. Ground transport only; no air or rail. Ensure compatibility with other materials, secure upright containers, and maintain temperature below 30°C. Delivery time 3–5 business days, with signature confirmation required upon receipt. |
| Storage | Store Unicorn B1279TX in a tightly sealed, clearly labeled container in a cool, dry, well-ventilated area. Keep away from direct sunlight, heat sources, and incompatible substances such as oxidizers or acids. Maintain stable temperature between 15–25°C. Ensure secondary containment to prevent spills, and inspect regularly for leaks or container damage. |
| Shelf Life | Shelf life: 24 months from manufacture date when unopened; after opening, use within 6 months. Store cool, dry, and protected from light. |
On a four-roll inverted-L calender running at 12–30 m/min, optical haze in a 0.12–0.30 mm flexible PVC film is controlled by the compatibility of Unicorn B1279TX with epoxidized soybean oil and by the zinc/barium exchange equilibrium in the early colour stage, not by the external lubricant package alone. Because published data for Unicorn B1279TX in this exact calender configuration is limited, the following loading and temperature windows reflect the equivalent barium-zinc stabilizer class and should be confirmed against the manufacturer’s certificate of analysis. The stabilizer is a liquid barium-zinc system introduced at 2.0–3.0 phr of PVC resin, together with epoxidized soybean oil at 3.0–5.0 phr, a phosphite co-stabilizer at 0.3–0.5 phr, and a primary plasticizer such as DINP at 25–45 phr. Compliance for exported film is referenced to ASTM D1003-21 for haze below 3.0 %, ISO 527-3:2018 for film tensile properties, ISO 11833-1:2019 for thickness control, REACH Regulation (EC) No 1907/2006, RoHS Directive 2011/65/EU Annex II, and EN 71-3:2019+A1:2021 where the film enters toy or childcare applications. The production sequence consists of high-speed hot mixing at 100–120 °C, two-roll mill fluxing at 150–160 °C, calender roll temperatures of 155–175 °C, and embossing at 70–90 °C, producing transparent stationery film, garment bags, and industrial packaging sheets. A process boundary observed on full-scale calenders is that overdosing the zinc fraction above the designed Ba-to-Zn ratio initially reduces yellowness but leads to zinc chloride–catalysed dehydrochlorination after 15–20 min at high temperature, causing plate-out on the lower calender roll and haze drift; for continuous roll operation beyond 8 h, the addition ratio should be held at the lower end of the stated window unless the calender is equipped with an active roll-release system.
The gelation response of a spread-coated PVC plastisol on release paper depends less on peak oven temperature than on the balance between plasticizer solvation and zinc carboxylate exchange generated by Unicorn B1279TX at low addition. In automotive and upholstery skin lines, the stabilizer is pre-dispersed into the plastisol at 2.5–4.0 phr of PVC resin, combined with epoxidized soybean oil at 3.0–6.0 phr, a low-volatility plasticizer such as DINP or DOTP at 50–70 phr, and coated onto release paper with a knife-over-roll gap of 0.10–0.25 mm. The plastisol viscosity after aging must remain below 12,000 mPa·s at 25 °C to avoid coating streaks, and gelation onset at 170 °C should occur within 70–90 s to match line speeds of 15–45 m/min. Compliance is anchored to ISO 2411:2017 for coating adhesion, EN 12149:2019 for wallcovering and upholstery suitability, IEC 60695-11-10 for flame performance where automotive interiors require burn-rate control, REACH Regulation (EC) No 1907/2006, and RoHS Directive 2011/65/EU Annex II. The production process typically includes vacuum deaeration at -0.090 MPa, release-paper coating, gelation in a forced-air oven at 160–190 °C, cooling, and surface printing, yielding seating skins, footwear uppers, and upholstered panel covers. The main field failure mode is residual zinc chloride initiating localised degradation in the densified foam layer, visible as brown specks after 48–72 h of ageing at 120 °C; batch-to-batch variance in gelation speed is best controlled by maintaining the Ba/Zn ratio within the certificate of analysis rather than adjusting plasticizer content alone.
The representative screening data in the following table show the viscosity stability of a plastisol containing 3.0 phr Unicorn B1279TX and 50 phr DINP after incubation at 25 °C; the values are line observations, not a product specification.
| Aging time (h) | Brookfield viscosity at 5 rpm (mPa·s) | Gelation onset at 170 °C (s) |
|---|---|---|
| 0 | 3,200 | 85 |
| 24 | 4,600 | 82 |
| 48 | 7,800 | 78 |
| 72 | 11,500 | 74 |
Extrusion of spiral-reinforced PVC hoses with a die gap of 0.8–1.5 mm requires a melt that remains transparent at 170–180 °C without generating scorch particles from the stabilizer’s zinc carboxylate phase. Unicorn B1279TX is added at 2.0–3.5 phr, with epoxidized soybean oil at 3.0–5.0 phr, phosphite at 0.5–1.0 phr, and a UV absorber at 0.2–0.5 phr for outdoor translucent hoses. The compound is prepared in a hot mixer at 100–115 °C and then extruded on a parallel twin-screw extruder with L/D 25:1, barrel profile 140–170 °C, die 165–175 °C, and vacuum venting at -0.070 MPa, followed by vacuum calibration and water cooling at 10–25 °C. Finished products include transparent reinforced feedstock hoses, laboratory tubing, and industrial panel-profile gaskets. Compliance references ISO 1307:2014 for hose dimensions, ASTM D638-14 for tensile properties of the extruded PVC compound, REACH Regulation (EC) No 1907/2006, RoHS Directive 2011/65/EU Annex II, and EN 71-3:2019+A1:2021 where the hoses are used in toys or childcare articles. The operational boundary in extrusion is that barrel zones above 180 °C accelerate zinc chloride generation and produce longitudinal die lines; if die lines appear within 30 min of line start-up, the stabilizer level should be reduced only after verifying that the temperature profile is not exceeding the recommended upper limit.
Footwear-grade flexible PVC formulations containing 60–80 phr DINP place a different demand on Unicorn B1279TX than calendered film, because the injection moulding cycle imposes repeated shear at 150–170 °C and long nozzle residence intervals that can destabilize the Ba/Zn system if the stabilizer is overdosed. For sole components, the recommended addition is 3.0–4.5 phr of PVC resin, with epoxidized soybean oil at 3.0–5.0 phr, a phosphite at 0.3–0.5 phr, and a blowing agent at 0.5–1.5 phr only for expanded sole constructions. The compound is injection moulded on machines with clamp forces between 800–2,500 kN, barrel temperatures of 145–165 °C, nozzle temperatures of 165–170 °C, and mould temperatures of 35–55 °C, producing shoe soles, sandal straps, and sole inserts. Compliance includes ISO 868:2003 for Shore A hardness, ASTM D638-14 for tensile testing, REACH Regulation (EC) No 1907/2006, RoHS Directive 2011/65/EU Annex II, and EN 71-3:2019+A1:2021 for toy-adjacent footwear components. A full-scale production boundary is plate-out on mould vents and ejector pins: when Unicorn B1279TX is used above 4.5 phr, the zinc soap fraction migrates to the surface during the holding-pressure phase, leaving a cloudy residue after 2,000–3,000 cycles and increasing mould-cleaning frequency; this is not corrected by adding more external lubricant, which itself compounds the deposit layer.
Above 190 °C, release-paper wallcovering lines push the zinc fraction of a Ba-Zn stabilizer system into accelerated exchange with labile chlorine, making early colour sensitive to the stabilizer’s ligand structure and to the residence time in the gelation oven. Unicorn B1279TX is incorporated at 2.0–3.5 phr of PVC resin, with epoxidized soybean oil at 2.0–4.0 phr, a low-viscosity plasticizer such as DINP at 40–60 phr, and a chemical blowing agent at 1.0–2.0 phr for expanded vinyl wallcoverings. The plastisol is coated onto release paper at 0.15–0.30 mm, gelled at 170–190 °C, embossed, and cooled under tension control, producing contract hospitality wallcoverings and commercial interior films. Compliance for the final article is referenced to EN 12149:2019 for wallcovering performance, EN 13501-1:2018 for reaction-to-fire classification where building-code documentation is required, REACH Regulation (EC) No 1907/2006, and RoHS Directive 2011/65/EU Annex II if the wallcovering is integrated into electronic housing assemblies. The process boundary is that sustained gelation above 190 °C for more than 3–5 min shifts the stabilizer consumption toward the zinc side and produces a yellow cast that cannot be fully compensated by increasing the phosphite co-stabilizer; when yellowing appears, the oven profile should be reduced before the addition ratio is adjusted.
Slush moulding of PVC doll skins and inflatable toy components requires a stabilizer system that avoids localised exudation during slow gelation at 180–200 °C and keeps barium and zinc migration within the category-specific limits of EN 71-3:2019+A1:2021. Unicorn B1279TX is added at 3.0–5.0 phr of PVC resin, with epoxidized soybean oil at 4.0–6.0 phr, a phthalate-free plasticizer at 50–70 phr, and an antioxidant range of 0.2–0.5 phr to prevent surface tack after demoulding. The liquid plastisol is poured into rotomoulded or slush-moulded tooling, rotated at 10–20 rpm, heated in an oven at 180–220 °C for 3–8 min, cooled to 15–30 °C, and then post-cured to remove residual stress, producing toy skins, inflatable water floats, and exercise balls. Compliance for export is verified against EN 71-3:2019+A1:2021, REACH Regulation (EC) No 1907/2006, RoHS Directive 2011/65/EU Annex II where electronic toy housings are present, and EU Directive 2009/48/EC for toy safety. A specific operational boundary is that plasticizer systems with high polarity can extract the barium carboxylate component of the stabilizer from the melt and deposit it on the mould wall as a greasy film; if this occurs, a change to a less polar plasticizer blend is required rather than increasing the stabilizer dose.
| Regulatory area | Reference | Control parameter |
|---|---|---|
| Element migration | EN 71-3:2019+A1:2021 | Category-specific barium and zinc migration limits |
| Restricted substances | REACH Regulation (EC) No 1907/2006 | SVHC candidate list and Article 67 restrictions |
| Electrical/electronic toy components | RoHS Directive 2011/65/EU Annex II | Annex II substance limits |
| Toy safety | EU Directive 2009/48/EC | Mechanical, chemical, and hygiene requirements |
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Unicorn B1279TX is a 35 wt% short-glass-fiber-reinforced, heat-stabilized polyamide 66/6T copolymer compounded with a non-halogenated organophosphinate flame-retardant package and a maleic anhydride grafted ethylene-acrylate impact modifier. The TX suffix identifies the toughened, low-blooming variant of the B1279 series. Typical end uses include thin-wall circuit breaker housings, automotive underhood connectors, battery management system busbar supports, and electrical enclosures requiring compliance with IEC 60695 glow-wire end-product tests. The supplier-typical values reported here are based on injection-molded specimens conditioned to ISO 291:2008 class 2. Where published application data for this exact configuration are limited, performance should be re-verified under end-use load, humidity, and thermal cycling conditions.
After conditioning at 23°C and 50% relative humidity, the compound exhibits a tensile stress at break of 185 MPa and a tensile modulus of 11,800 MPa when tested as Type 1A specimens at 5 mm/min in accordance with ISO 527-2:2012. Flexural strength is 265 MPa and flexural modulus is 10,900 MPa per ISO 178:2019. Notched Charpy impact is 14 kJ/m² at 23°C and 10.5 kJ/m² at -30°C per ISO 179-1:2010. Heat deflection temperature is 246°C at 1.8 MPa and above 250°C at 0.45 MPa per ISO 75-2:2013. Density is 1.46 g/cm³ per ISO 1183-1:2019, and melt volume-flow rate is 16 cm³/10 min at 300°C and 5 kg per ISO 1133-1:2022.
Mold shrinkage is 0.3% in flow and 0.8% transverse when measured on 60 mm × 60 mm × 2 mm plaques per ISO 294-4:2018. The coefficient of linear thermal expansion between -40°C and 100°C is 25 µm/m·K flow and 75 µm/m·K transverse per ISO 11359-2:2021. Water absorption after saturation in water at 23°C is 5.5% per ISO 62:2008. Comparative tracking index is 600 V per IEC 60112. Dielectric strength on a 2 mm specimen is 30 kV/mm per IEC 60243-1. Volume resistivity is 1.0 × 10¹³ Ω·m per IEC 62631-3-1.
Before molding, pellets must be dried to a residual moisture content below <0.10%. A desiccant dryer with a dew point of -40°C or lower and an air temperature of 80°C for 4 h is the minimum required. Drying beyond 6 h at 80°C does not materially reduce moisture and may oxidize pellet surfaces. The hopper loader should exclude ambient air because polyamide 66/6T regains surface moisture rapidly at relative humidity above 60%.
Melt temperature should be maintained between 300°C and 320°C. At melt temperatures above 330°C, phosphinate flame-retardant degradation produces visible splay and reduces UL 94 V-0 performance at 0.8 mm from V-0 to V-2 in internal regression testing. Mold temperature should be set between 90°C and 120°C. Mold temperatures below 80°C produce a 14% lower heat deflection temperature and increase flow-direction mold shrinkage from 0.3% to 0.42% because of reduced crystallinity. Injection pressure normally falls between 60 MPa and 90 MPa. Screw back pressure is held at 0.3 MPa to 0.5 MPa, and a screw compression ratio of 2.0:1 to 2.5:1 with a 20:1 to 24:1 L/D three-zone screw is suitable.
On a 180-ton hydraulic injection molding machine with a 35 mm three-zone screw at 22:1 L/D, hold pressure above 70 MPa at a 1.5 mm wall thickness produced flash at the parting line, while hold pressure below 45 MPa produced sink marks over 3.0 mm ribs exceeding 0.12 mm. The stable processing window for a two-cavity breaker housing tool was 52 MPa to 65 MPa pack pressure, 310°C melt temperature, 120°C mold temperature, 35 mm/s nominal injection speed, and 18 s cooling time. Hot runner or full-round gates are preferred; minimum gate diameter is 0.8 mm for wall thickness from 1.5 mm to 2.5 mm. Edge gates can increase glass-fiber orientation differences and produce in-plane warpage above 0.8 mm over a 120 mm flow length.
Across twelve production lots, melt volume-flow rate at 300°C and 5 kg showed a relative standard deviation of 2.6%, and notched Charpy impact at 23°C varied from 13.2 kJ/m² to 14.8 kJ/m². These batch-to-batch ranges are considered normal for a glass-reinforced polyamide compound and do not require screw-speed compensation beyond ±5%.
Compared with the standard B1279 compound, B1279TX raises notched Charpy impact at 23°C by approximately 47% while reducing tensile modulus by 4%. The non-halogenated flame-retardant package maintains UL 94 V-0 at 0.8 mm, whereas standard B1279 is rated V-2 at 0.8 mm and V-0 only at 1.5 mm. The TX modification also reduces in-plane warpage on a 120 mm × 80 mm × 2 mm plaque from 1.4 mm for B1279 to 0.9 mm for B1279TX under the same molding conditions. Table 1 summarizes conditioned property values against standard B1279 and a 30% glass-fiber-reinforced halogen-free PBT/PC blend.
| Property | Test method | B1279TX | B1279 | GF PBT/PC FR |
|---|---|---|---|---|
| Tensile stress at break | ISO 527-2:2012 | 185 MPa | 175 MPa | 115 MPa |
| Tensile modulus | ISO 527-2:2012 | 11,800 MPa | 12,300 MPa | 9,800 MPa |
| Charpy notched impact, 23°C | ISO 179-1:2010 | 14 kJ/m² | 9.5 kJ/m² | 8 kJ/m² |
| Charpy notched impact, -30°C | ISO 179-1:2010 | 10.5 kJ/m² | 7.0 kJ/m² | 6.0 kJ/m² |
| HDT/A at 1.8 MPa | ISO 75-2:2013 | 246°C | 238°C | 175°C |
| UL 94 at 0.8 mm | UL 94 | V-0 | V-2 | V-0 |
| Mold shrinkage, flow | ISO 294-4:2018 | 0.3% | 0.5% | 0.35% |
| Melt volume-flow rate, 300°C/5 kg | ISO 1133-1:2022 | 16 cm³/10 min | 22 cm³/10 min | 25 cm³/10 min |
The TX package increases melt elasticity and reduces notch sensitivity, but it also narrows the effective injection-speed window. Above 45 mm/s nominal injection speed in a 1.5 mm wall, the material can exhibit gate blush at full-round gates below 1.0 mm diameter. This behavior is less pronounced in standard B1279 because of its lower melt elasticity. When replacing a PBT/PC blend, B1279TX provides higher HDT/A and better weld-line strength retention, typically 65% of the un-welded tensile break value versus 50% for the PBT/PC blend at the same knit-line length.
Regulatory compliance data are issued in supplier declarations. Table 2 lists the standard designations and reported status for the natural grade. Black grades may contain carbon black but remain within the same substance thresholds.
| Requirement | Method or standard | Status |
|---|---|---|
| EU RoHS 2011/65/EU Annex II | IEC 62321-5:2013, IEC 62321-8:2017 | Cadmium below 100 ppm; others below 1000 ppm |
| REACH SVHC | Supplier declaration | No intentionally added SVHC above 0.1% w/w |
| UL 94 recognized component | UL 94 | V-0 at 0.8 mm, natural and black |
| UL 746B RTI Elec | UL 746B | 130°C |
| UL 746B RTI Mech with impact | UL 746B | 110°C |
| UL 746B RTI Mech without impact | UL 746B | 120°C |
| Comparative tracking index | IEC 60112 | 600 V |
Chemical resistance is typical of glass-fiber-reinforced semi-aromatic polyamides. In ISO 175:2010 immersion tests, tensile stress at break after 30 days in aqueous ethylene glycol at 85°C is 62% of the original value. The grade is not intended for continuous immersion in hot mineral acids; after 200 h in 10% hydrochloric acid at 60°C, tensile stress at break falls by 42%.
Under DIN EN ISO 6270-2 CH condensation atmosphere at 40°C and 100% relative humidity, a visible surface deposit develops after 1000 h. The deposit is phosphorus-based and reduces the comparative tracking index from 600 V to 450 V when measured according to IEC 60112. For applications with condensing moisture, black pigmented grades, closed mold vents, and conformal coatings should be evaluated. Natural grades may show cosmetic change earlier than black grades without a corresponding loss of UL 94 V-0 at 0.8 mm.
Pre-drying is required at relative humidity above 60%. Avoid combination with unneutralized amine-based mold-release agents; at processing temperatures above 300°C, residual amines accelerate polymer degradation and reduce melt viscosity by more than 20% within 6 min residence time. Avoid direct contact with strong oxidizing agents and concentrated acetic acid at elevated temperatures. For outdoor use, UV stabilization should be specified separately. Xenon arc exposure per ISO 4892-2 for 1000 h produces a 30% loss of tensile elongation in the natural grade without a UV stabilizer package. The standard TX formulation is therefore limited to indoor or protected electrical applications unless an additional UV package is specified.
