Jiangsu Xinfuda ABS H1100 T is a pelletised acrylonitrile-butadiene-styrene copolymer supplied for injection moulding. The suffix T denotes a rubber-phase modification that increases notched impact energy absorption relative to standard medium-impact ABS without glass reinforcement. The producer’s representative datasheet lists a melt volume-flow rate of 7.0 cm³/10 min measured to ISO 1133-1:2022 at 220 °C under 10 kg load. Because peer-reviewed multi-lot data for this specific Chinese producer grade remain limited, the numerical ranges in this page are producer-datasheet representative values and class-typical high-impact ABS data rather than independently certified design allowables. H1100 T is intended for durable goods housings, electrical enclosures, power-tool shells, appliance fascias, luggage shells, and moulded fittings that require a balance of low-temperature toughness and dimensional stability.

Incoming resin should be sampled for moisture and melt flow rate before transfer to a drying hopper. The melt is pseudoplastic under capillary rheometry to ISO 11443: apparent viscosity at 230 °C falls from approximately 900 Pa·s at 100 s⁻¹ to 180 Pa·s at 1000 s⁻¹. This shear-thinning response allows filling of ribs down to 1.2 mm where the cavity flow-length-to-wall-thickness ratio is less than 120:1; above this ratio, short shots become probable unless sequential valve-gate actuation is used. The coefficient of linear thermal expansion between 23 °C and 55 °C is 80×10⁻⁶ K⁻¹ to 95×10⁻⁶ K⁻¹ to ISO 11359-2, which is relevant when long metal inserts are overmoulded because differential contraction can generate stress cracks at the insert boundary.

What Does the H1100 T Rubber Phase Change Compared with Medium-Impact ABS?

The H1100 T grade is differentiated by a bimodal polybutadiene particle distribution and a higher rubber-volume fraction than general-purpose ABS. The higher grafting density of the styrene-acrylonitrile phase onto 0.2 μm to 1.5 μm rubber particles raises notched Izod impact at 23 °C to a representative 28 kJ/m² to 36 kJ/m² when tested to ISO 180/A. At −30 °C, the notched Izod value remains in the 10 kJ/m² to 15 kJ/m² range, which is the main reason H1100 T is selected for freezer-door inner panels and outdoor meter enclosures instead of medium-impact ABS grades that typically fall below 8 kJ/m² under the same condition. The impact shift is accompanied by a deliberately lower melt flow rate than high-flow ABS grades, so hot-runner tooling must be balanced to avoid short shots in thin ribs.

For medium-wall injection moulding, H1100 T must be dried before processing. A dehumidifying hopper dryer set at 80 °C for 2 h to 4 h lowers residual moisture to below 0.05 %. Pellets exposed to ambient air above 60 % RH for more than 4 h absorb enough surface moisture to generate silver streaking and splay in hot-runner drops; re-drying under the same profile is required before fitting the material into a press. The grade should not be purged with polyvinyl chloride or acetal; an ABS or acrylic purge compound is used to avoid acid-catalysed degradation. These are operational boundaries rather than optional recommendations, because partial hydrolysis of the styrene-acrylonitrile matrix under high-shear processing can reduce notched Izod impact values by approximately 20 % to 30 % before visible splay appears.

When Site Humidity Exceeds 60 % RH Before Injection Moulding

In a 350 t hydraulic clamp machine fitted with a 45 mm diameter, 20:1 L/D general-purpose screw, H1100 T processes with a hopper-to-nozzle barrel set of 210 °C, 225 °C, 230 °C, 230 °C, 225 °C. Melt temperature measured by an immersion probe should be kept between 220 °C and 250 °C. Below 220 °C, the butadiene-rich phase remains undispersed, increasing screw torque above 80 % of machine rating and causing unmelted nodules on the cavity surface. Above 260 °C, the styrene-acrylonitrile matrix begins to yellow and the butadiene phase can crosslink into gel particles; total residence time above 250 °C should not exceed 5 min. Hot-runner valve gates smaller than 0.8 mm are not recommended because local shear heating greater than 10 K generates free surface splay and reduces weld-line strength. Back pressure between 0.5 MPa and 1.0 MPa and a cushion of 3 mm to 6 mm provide stable shot weights in medium-shot tools.

On a production-scale 1200 t platform running a 1600 mm × 450 mm × 3 mm appliance fascia tool, H1100 T should be fed through heated sprue bushings and a manifold temperature not exceeding 245 °C. Runner diameter below 8 mm can produce a pressure drop exceeding 35 MPa at a fill time of 1.8 s, which may force injection pressure beyond hydraulic capacity or create gate blush. The observed batch-to-batch variance in melt volume-flow rate within the stated 6.5–9.0 cm³/10 min range can move shot weight by 1.2 % to 2.5 % on such tools, so cushion monitoring and shot-size trim are required during lot changeovers.

Tooling Temperature and Weld-Line Performance in Thin-Wall Enclosures

Mould surface temperature should be held between 40 °C and 80 °C. At mould temperatures below 40 °C, weld lines in thin-wall enclosures become visible and notched impact at the knit line falls because the ABS is amorphous and cannot crystallise to heal flow fronts. At mould temperatures above 80 °C, cycle time increases without a corresponding gain in stiffness or dimensional stability. For textured fascias, mould temperatures below 40 °C also reduce grain transfer; polished surfaces may require dynamic mould heating to avoid flow marks. Weld-line strength in a 2 mm plaque drops from approximately 12 kJ/m² to 5 kJ/m² when the mould temperature is lowered from 60 °C to 30 °C, which is consistent with frozen-in molecular orientation at the flow front. These weld-line values are based on ISO 180/A tests of moulded plaques and should be verified on production tools.

Jiangsu Xinfuda ABS H1100 T is used in appliance fascia panels, vacuum-cleaner shells, power-tool battery housings, electrical distribution-box covers, luggage shells, and freezer-door inner panels. The material is rated as UL 94 HB at 1.5 mm nominal thickness; it is not a V-0 formulation and must not be specified where flame-retardant enclosure demands exceed HB. In outdoor meter enclosures and vehicle wheel-arch trim, the unpigmented grade requires ultraviolet protection because ABS photo-oxidises through the polybutadiene phase; black or dark grey parts typically include 2 % to 4 % carbon black masterbatch or an ASA capstock to maintain surface retention. For removable power-tool battery housings, boss cracking around screw inserts is a known production-floor failure mode when core pins run below 40 °C; post-mould annealing at 70 °C for 30 min reduces residual stress cracking in threaded brass inserts.

Differences from Glass-Filled and High-Heat ABS Grades

Compared with a 20 % glass-fibre-reinforced ABS grade, H1100 T offers lower flexural modulus and better notched impact at low temperature. Glass-filled ABS typically raises flexural modulus to 5500 MPa or higher but reduces notched Izod at 23 °C below 15 kJ/m², whereas H1100 T remains between 28 kJ/m² and 36 kJ/m². High-heat ABS grades based on α-methylstyrene or maleimide shift Vicat softening above 105 °C, but their melt viscosity is higher and their low-temperature impact is usually lower. The H1100 T grade therefore occupies a narrow processing position: it is not the stiffest, not the most heat-resistant, and not the easiest-flowing ABS, but it is selected when cold-temperature ductility and moderate processability are the controlling requirements. The selected grade should not be used above 85 °C continuous service under load; published data for this specific configuration are limited.

Relative to high-impact polystyrene, Jiangsu Xinfuda ABS H1100 T has higher tensile yield stress and greater resistance to environmental stress cracking in vegetable oil and dilute household cleaners. High-impact polystyrene as a comparator typically has tensile yield stress below 25 MPa and cannot retain gloss after repeated wiping with surfactant solutions, whereas ABS H1100 T remains above 40 MPa and shows no whitening in the same exposure to ISO 175 immersion tests. Compared with ASA, H1100 T lacks the weatherable ester-free matrix needed for unpigmented outdoor parts; ASA retains colour and impact after prolonged UV ageing, while unmodified ABS develops chalking and a fall in notched Izod below 20 kJ/m² after outdoor exposure depending on radiation dose and part orientation.

For compliance, the producer supplies declarations for REACH SVHC content below 0.1 % w/w and RoHS Directive 2011/65/EU Annex II restricted substances below the maximum concentration values. This covers lead, mercury, cadmium, hexavalent chromium, PBB, PBDE, and the four phthalates added by Directive (EU) 2015/863. Those declarations are lot- or grade-level documents and should be requested for each shipment. Halogen-free or flame-retardant equivilances are not covered by H1100 T.

Chemical compatibility follows the general ABS profile: aliphatic hydrocarbons, dilute acids, and dilute alkalis under low stress are generally tolerated; methyl ethyl ketone, dichloromethane, tetrahydrofuran, and aromatic solvents cause rapid attack. Gasoline splash on stressed bosses can induce environmental stress cracking unless parts are stress-relieved or design features avoid high residual stress. For components requiring potable-water contact, direct food-contact status, or V-0 flammability, H1100 T must not be specified without additional migration, certification, or formulation data from the producer. The grade is supplied with lot-specific certificates of analysis showing melt flow rate, Izod impact, and Vicat softening temperature; users should verify these against incoming moisture and regrind content before compounding floor stock.