Bada BADAMID PA12 CF30 black PA12, 30% Carbon Fiber Reinforced, Conditioned
- Название продукта: Bada BADAMID PA12 CF30 black PA12, 30% Carbon Fiber Reinforced, Conditioned
- Сайт Factroy: Округ Юду, Ганьчжоу, Цзянси, Китай
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- Производитель: Ascent Petrochem Holdings Co., Limited
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- Bada BADAMID PA12 CF30 black PA12, 30% Carbon Fiber Reinforced, Conditioned is typically used in formulations when high stiffness, tensile strength, and dimensional stability and moisture absorption, thermal expansion, and warpage must be controlled within specific ranges.
| Код ТН ВЭД | 293942 |
Как аккредитованный завод Bada BADAMID PA12 CF30 черный PA12, 30% углеродного волокна, мы соблюдаем строгие протоколы качества - каждая партия подвергается строгим испытаниям для обеспечения последовательных стандартов эффективности и безопасности.
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A diesel fuel-return quick connector in heavy-duty commercial powertrains is moulded from Bada BADAMID PA12 CF30 black when retention force has to survive prolonged exposure to 85 °C diesel and 120 °C under-bonnet air. The resin is supplied as a conditioned 30 wt% carbon-fibre grade, but the moulder dries the lot anyway because the conditioning equilibrium moisture is not the process-ready water content. The component is validated against SAE J2044 for dimensional fit and SAE J2045 for performance of quick-connect couplings in liquid-fuel and vapour systems. The terminal products include latch arms, retaining clips and collar bodies. The carbon-fibre fraction is fixed at 30 wt% as supplied. Regrind is limited to 10 wt% for non-latching collars and 0 wt% for latch-arm production because carbon-fibre shortening at the weld line reduces Charpy notched impact values measured by ISO 179-1. The resin is dried in a desiccant dryer with a -30 °C dew point to 0.05 % residual moisture or lower, measured by ISO 15512. Melt temperature at the nozzle is held between 245 °C and 270 °C. The tool is maintained between 80 °C and 110 °C. A single submarine gate is placed opposite the retained end, with an overflow tab beyond the latch root. Hold pressure is maintained between 500 bar and 800 bar until gate freeze. The screw L/D is at least 18:1 and the barrel is equipped with three-zone closed-loop heating, not a reciprocating plunger.
The main process conflict is weld-line brittleness created by multi-gate filling. Carbon fibres align along the melt front and do not bridge the weld plane. Fracture initiates at the latch root when the opposing fronts are below the rapid-crystallisation temperature of the PA12 matrix. Moving the weld plane outside the load-bearing zone by single gating and tab placement is more effective than raising melt temperature beyond 270 °C. The latch-arm section is analysed with fibre-orientation simulation using measured fibre aspect ratio from the batch certificate. A short shot of the latch arm is inspected under 10x magnification before production release to confirm that the weld line does not intersect the root radius. Fuel conditioning is performed by immersion in test fluid per ISO 175 at 85 °C for 168 h, followed by tensile testing per ISO 527-2. Dimensional change is measured before and after immersion according to ISO 175, and the part is rejected if the collar diameter shift exceeds the OEM drawing tolerance.
| Measured characteristic | Standard designation |
| Tensile modulus, tensile strength, elongation at break | ISO 527-2 |
| Charpy notched impact strength | ISO 179-1 |
| Heat deflection temperature under 1.8 MPa | ISO 75-2 method A |
| Density | ISO 1183-1 |
| Surface resistivity | ASTM D257 |
| Water absorption | ISO 62 |
| Residual moisture | ISO 15512 |
What pressure-retaining limits apply to PA12 CF30 in ISO 15500 CNG/NGV filter bowls?
CNG/NGV filter bowls and regulator mounting brackets are injection-moulded in Bada BADAMID PA12 CF30 black where dimensional stability after saturated odourised gas is required and PA66 is rejected for moisture-induced swelling. The terminal products are non-load-bearing filter bowls, pressure regulator support brackets and fill-line guide clips. The component is checked against ISO 15500 for functional safety of compressed natural gas fuel system components, and the vehicle installation is reviewed under ECE R110. The carbon-fibre loading remains at 30 wt%; regrind is 0 wt% for pressure-cycling parts during first approval and 15 wt% for low-stress brackets after lot-matched validation. Material consistency is verified by ash content per ISO 3451-1, and a lot outside the supplier statistical range is isolated, not blended into production.
Drying to 0.05 % residual moisture is mandatory because moisture entering the melt phase generates hydrolysis, reduces molecular weight and weakens the fibre-matrix interface. The barrel is operated at 250 °C to 270 °C, with the front zone no higher than 270 °C to minimise thermal degradation at the fibre-matrix interface. The mould temperature is set between 90 °C and 120 °C to maximise crystallinity and stabilise dimensions. For thick filter-bowl sections, a two-stage fill profile is programmed with a slow final pack using screw position transfer, not timer transfer, to reduce gas entrapment. The part is ejected only after the core surface has fallen to 60 °C. Surface resistivity is measured per ASTM D257 on the production part because the carbon network contributes to charge dissipation. Permeation data for the specific wall thickness must be generated by the system integrator using the final component geometry; the moulder does not claim a universal permeation coefficient from raw plaque data.
Pneumatic valve spools and the ISO 8573-1 oil-carrying air environment
Compressed-air valve bodies in automated assembly lines use Bada BADAMID PA12 CF30 black for spools, cylinder end caps and wear rings when the pneumatic supply contains mineral-oil mist at 1 ppm to 5 ppm per ISO 8573-1 class 3 to 4. The terminal component is a 3/2 or 5/2 spool valve sliding under 6 bar to 10 bar pilot pressure. The specification for dynamic spools requires 0 wt% regrind because uneven carbon-fibre distribution increases wear variation along the spool land. Static cylinder end caps may use up to 20 wt% lot-matched regrind after validation. Drying is performed to 0.05 % residual moisture. The screw speed is limited to 70 rpm for a 35 mm screw to preserve fibre length. Injection speed is set between 150 mm/s and 250 mm/s from a gate opposite the non-working land. The mould is held at 90 °C and hold pressure is set at 600 bar to 900 bar until gate freeze.
Post-mould conditioning cannot be skipped. The spool is conditioned at 23 °C and 50 % RH for 40 h per ISO 1110 before assembly because dry-as-moulded parts are excessively stiff and may fracture at the spool undercut during first actuation. Impact strength after conditioning is measured by ISO 179-1, and the spool must survive the valve maker's actuation test without cracks at the metering edge. In service, the carbon-fibre-bearing face is run against a hardened chromium or ceramic-coated steel sleeve with roughness below Ra 0.4 µm. If the sleeve roughness exceeds Ra 0.8 µm, fine carbon particle abrasion accelerates and the clearance opens beyond the manufacturer's internal-leakage limit. The grade is not selected for unlubricated medical breathing-air valves unless cleanliness of the gas is class 0 per ISO 8573-1 and the fibre-shedding risk has been reviewed.
When the device is an external orthotic connector, the governing risk is cyclic flex fatigue at body temperature, not high-load creep. Bada BADAMID PA12 CF30 black is used for dynamic ankle joint housings, calf-shell connector plates and modular knee-joint couplers in prosthetics and orthotics. The terminal product is an injection-moulded joint housing that accepts titanium or stainless-steel adapters. The raw polymer is supported by a documented risk assessment under ISO 10993-1, and the finished device is tested for in vitro cytotoxicity per ISO 10993-5 and skin sensitisation per ISO 10993-10 when skin contact exceeds 30 days. The manufacturing file is maintained to ISO 13485. The carbon-fibre fraction is fixed at 30 wt%; regrind is 0 wt% because the patient-contact surface cannot include a variable reprocessed fraction without a new biological risk assessment.
Drying follows the same 0.05 % residual moisture limit, but the screw shear is reduced to avoid short-fibre breakage because bending fatigue life depends on retained fibre length. A melt temperature of 245 °C to 260 °C and a mould temperature of 80 °C to 100 °C are used. The part is annealed after moulding at 80 °C for 2 h and then conditioned at 23 °C and 50 % RH to equilibrium before coordinate measuring machine inspection. The design file compares dry-as-moulded and conditioned dimensions because moisture uptake produces small dimensional growth. Cyclic fatigue testing is performed on the final device under operator-specified load spectra; published data for this specific configuration is limited, so each production lot is tested against the OEM's internal fatigue protocol rather than a public standard. The material is not implant-grade and is not released for mucosal or breached-skin contact without additional regulatory testing.
When electromagnetic compatibility and low outgassing justify carbon-fibre PA12 in camera gimbals over glass-filled PA66
Camera gimbal brackets in unpiloted systems are specified in Bada BADAMID PA12 CF30 black rather than glass-filled PA66 when the enclosure must dissipate static charge and remain dimensionally stable across altitude temperature swings. The terminal products are motor mounts, vibration-isolated payload brackets and RF-transparent enclosure frames. The electrical acceptance criterion is surface resistivity measured by ASTM D257. Moulded plaques with well-dispersed carbon fibre typically fall between 10³ Ω/sq and 10⁶ Ω/sq, but the batch certificate is always checked because fibre dispersion and surface skin control the result. The production line is audited to IEC 61340-5-1 for electrostatic discharge protected area handling, and assembly fixtures are grounded to 1 MΩ to 10 MΩ.
The carbon-fibre fraction remains 30 wt%. Regrind is limited to 15 wt% for non-critical mounting tabs and 0 wt% for IMU mounting planes. Pre-dry to 0.05 % residual moisture. Thin-wall sections between 1.2 mm and 2.5 mm are filled with injection speeds from 200 mm/s to 400 mm/s and a mould temperature of 90 °C to 110 °C. Sequential valve-gate sequencing is used to move weld lines into low-stress zones. Outgassing is not presumed for this grade; if the gimbal flies in a sealed payload bay, the moulder must test per ASTM E595 and report total mass loss. The anisotropic shrinkage of carbon-fibre PA12 is managed by compensation factors for flow and cross-flow directions derived from mould trials, not from isotropic PA12 data. Dimensional inspection is conducted on a coordinate measuring machine against the drawing after the part has cooled to 23 °C.
How start-stop lubrication governs carbon-fibre abrasivity in industrial gear pump wear plates
In industrial gear pumps, the wear plate functions as a sacrificial surface between gear teeth and the housing. Bada BADAMID PA12 CF30 black wear plates are moulded for light-duty hydraulic gear pumps and chemical transfer pumps operating from 0.5 bar to 8 bar differential pressure. The terminal products are clamp-in wear plates, seal retainers and housing liners. The carbon-fibre network improves compressive load resistance, but it also increases abrasive action against the mating gear steel. The design rule pairs the plate with hardened steel of 58 HRC to 62 HRC and a surface finish of Ra 0.2 µm to 0.4 µm. If the gear is unhardened stainless steel, the polymer side becomes the wear source and the steel face scores. Wear behaviour is compared by pin-on-disc testing per ASTM G99 using the production coolant or oil, because dry and flooded friction coefficients differ significantly.
For wear plates, the 30 wt% carbon-fibre fraction is used as supplied. Regrind is limited to 15 wt% for shut-off plates only; sliding plates are virgin material. Batch consistency is verified by ash content per ISO 3451-1. Pre-dry to 0.05 % residual moisture. The melt temperature is kept at 250 °C to 270 °C, and the mould at 100 °C to 120 °C. Injection speed is reduced to 60 mm/s to 120 mm/s to avoid jetting on the plate face. Hold pressure is 700 bar to 900 bar. The flatness of the plate after conditioning at 23 °C and 50 % RH is verified on a surface plate before assembly. The material is not accepted for dry-running gear pumps unless the PV limit is measured against the actual mating surface and a conservative design factor is applied. Published data for this specific configuration is limited, so a production trial with oil aging at 80 °C for 500 h is required before release.
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- Bada BADAMID PA12 CF30 black PA12, 30% Carbon Fiber Reinforced, Conditioned Производится в соответствии с системой качества ISO 9001 и отвечает соответствующим нормативным требованиям.
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Bada BADAMID PA12 CF30 black PA12, 30% Carbon Fiber Reinforced, Conditioned, is a carbon-fiber-reinforced polyamide 12 compound supplied in a moisture-conditioned state. The term “conditioned” in the product designation refers to moisture conditioning to 23 °C and 50% relative humidity per ISO 291, not to dry-as-molded specimens. Under that conditioning atmosphere, PA12 reaches an equilibrium moisture content of approximately 0.5–0.7%; the result is a lower tensile modulus and higher notched impact strength per ISO 179-1/1eA than dry PA12 CF30 tested immediately after molding. The compound is typically manufactured on twin-screw extruders with L/D ratios between 40:1 and 48:1, with carbon fiber side-feeding after the polymer melting zone to preserve fiber length. Production-scale wear behavior differs from unfilled PA12: carbon fiber abrades screw flights, barrel walls, and non-return valve seats. Plants running this product often specify bimetallic barrels and hardened screw elements at HRC 58–62 to maintain shot-weight consistency. Check-ring erosion is the primary failure mode observed on injection molding machines; cushion instability and part-weight drift are early indicators that the non-return valve requires replacement. Before melt processing, pellets should be dried at 80 °C for 4–8 h in a desiccant dryer with a dew point no higher than -30 °C. Melt processing above 0.15% moisture content leads to splay and, at melt temperatures above 270 °C, hydrolytic degradation that narrows molecular weight distribution.
What distinguishes BADAMID PA12 CF30 black from glass-filled PA12 grades?
At equal 30% fiber loading, carbon fiber provides a lower density and higher specific stiffness than E-glass, but it also introduces electrical conductivity and more pronounced mechanical anisotropy. The conditioning response is similar to glass-filled PA12 in terms of moisture uptake, but the property changes are not identical because carbon fiber does not absorb water. The comparative ranges in the following table represent typical conditioned values for the compound class; batch-specific certificates should be obtained from the manufacturer.
| Property | BADAMID PA12 CF30 black | PA12 GF30 | PA12 unfilled | Test method |
|---|---|---|---|---|
| Density, g/cm³ | 1.15–1.18 | 1.22–1.24 | 1.01–1.02 | ISO 1183-1 |
| Tensile modulus, MPa | 20,000–24,000 | 8,500–10,500 | 1,400–1,800 | ISO 527-2 |
| Tensile strength, MPa | 170–200 | 110–140 | 45–55 | ISO 527-2 |
| Elongation at break, % | 1.5–2.5 | 3–5 | >50 | ISO 527-2 |
| Charpy notched impact, kJ/m² | 8–12 | 10–15 | 5–10 | ISO 179-1/1eA |
| Surface resistivity, Ω | 103–106 | 1012–1014 | 1012–1014 | IEC 62631-3-2 |
| HDT 1.8 MPa, °C | 160–175 | 165–175 | 50–60 | ISO 75-2 |
| CLTE flow, 10⁻⁶ K⁻¹ | 15–25 | 25–35 | 100–120 | ISO 11359-2 |
| Moisture absorption at 23 °C/50% RH, % | 0.5–0.7 | 0.5–0.7 | 0.7–0.8 | ISO 62 |
Carbon fiber reduces surface resistivity below 106 Ω, which permits electrostatic dissipation in automated handling equipment; glass-filled PA12 remains insulating at 1012–1014 Ω. However, the conductive filler prohibits use as a primary electrical insulator and changes short-circuit behavior in electrical enclosures. The lower density and higher modulus of carbon fiber are advantageous for moving parts, but impact strength is generally lower than PA12 GF30 at the same fiber weight fraction when tested at 23 °C per ISO 179-1/1eA.
Thermal and rheological constraints during melt processing
Setpoint selection must account for the shear-thinning character of carbon-fiber-filled PA12. At a melt temperature of 250 °C and apparent shear rate of 1000 s⁻¹, the apparent viscosity for a 30% carbon-fiber PA12 typically lies between 80 Pa·s and 150 Pa·s; published data for the exact Bada grade is limited, so in-line capillary rheometry or mold-filling simulation should be used for gate and runner sizing. Barrel temperature profiles in injection molding normally range from 240 °C at the feed throat to 260–270 °C at the nozzle. Melt temperatures below 235 °C reduce carbon fiber wetting and produce poor weld line strength; above 280 °C, PA12 undergoes thermal-oxidative degradation that darkens the matrix and increases volatile content. Mold temperature should be held between 80 °C and 120 °C. A mold temperature of 100 °C or higher improves crystallization at the surface and reduces post-molding property drift.
Residence time at melt temperature should not exceed 10 min. Start-up after shutdown requires purging with unfilled PA12 or a commercial purging compound because carbon-fiber-filled PA12 residues degrade into black specks. The abrasive filler requires hardened screw and barrel materials; case-hardened screws at HRC 58–62, bimetallic barrels, and hardened non-return valves are specified for sustained production. Processing with up to 20% regrind is common, but higher regrind fractions reduce fiber length and notched impact. Melt flow rate measured at 275 °C with 5 kg load per ISO 1133-1 is used for incoming lot control; batch-to-batch variation of ±5 g/10 min is typical for carbon-fiber PA12 compounds, and lot changes may require cushion and switchover pressure adjustment.
Post-molding dimensional control for Bada BADAMID PA12 CF30 black is not governed by a single shrinkage value. Flow-direction shrinkage in a 2 mm plaque molded at 100 °C mold temperature can be 0.05–0.15%, while cross-flow shrinkage is commonly 0.25–0.45%; the anisotropy produces warpage in flat covers unless gate position, wall thickness, and cooling layout are balanced. A tooling trial on an injection molding machine with cavity pressure sensors is recommended: switchover pressure of 600–900 bar is maintained until the gate freezes, typically 8–15 s for a 2–3 mm wall. After ejection, parts should be conditioned at 23 °C and 50% RH for at least 24 h before critical dimension inspection; a 100 mm flow-direction rib can change by 0.03–0.06 mm during that period, while a cross-flow rib changes 0.08–0.15 mm. This moisture-driven movement is reversible and must be included in initial sampling and process capability studies.
If carbon fiber replaces brass or machined aluminum in lightweight fixtures
When Bada BADAMID PA12 CF30 black replaces brass or aluminum in end-of-arm tooling, brackets, or sensor housings, the design must account for anisotropy and lower absolute stiffness. Density of the carbon-fiber compound is approximately 1.16 g/cm³, roughly 85% lower than brass and 55% lower than aluminum, but tensile modulus of 20–24 GPa is about one-tenth that of aluminum. The material is therefore used for stiffness-to-mass rather than for direct substitution of metal sections. In cyclic loading, published fatigue data for this specific Bada grade is limited; generic conditioned 30% carbon-fiber PA12 tested at 23 °C and 50% RH shows a tension-tension fatigue strength of approximately 50–60 MPa at 106 cycles with R 0.1, but component-level validation is required. Dynamic coefficient of friction against steel is typically 0.25–0.35 per ISO 8295. The carbon fiber reduces linear thermal expansion in the flow direction to 15–25 × 10⁻⁶ K⁻¹, which improves dimensional match with steel inserts. Galvanic corrosion risk with aluminum or magnesium inserts in humid environments must be assessed because carbon fiber is cathodic and can accelerate attack at wet interfaces.
In production, metal replacement also changes assembly methods. Ultrasonic welding of carbon-fiber-filled PA12 is possible only with high-amplitude, low-frequency equipment and welded joint designs that avoid fiber accumulation at the weld zone; comparable unfilled PA12 welds more readily because of higher melt elongation. Thread-forming screws perform adequately when boss holes are designed with lower engagement, but carbon fiber reduces ductility and can crack thin bosses if torque is not controlled. Published data for this exact grade in ultrasonic welding is limited; process development should include joint strength testing per ISO 527-2 or ISO 10365 for adhesively bonded joints.
Compliance status for Bada BADAMID PA12 CF30 black must be verified against the supplier's safety data sheet and current regulatory statements. The PA12 matrix generally supports REACH and RoHS Directive 2011/65/EU compliance, but the carbon fiber and black pigment require separate verification. Food-contact use is not presumed: migration testing under EU Regulation 10/2011 and EN 1186-1 would be necessary, and published data for carbon-fiber-filled black PA12 under food-contact conditions is limited. The conditioned state is sensitive to storage: opened bags exposed to ambient air above 60% RH for more than 24 h should be re-dried at 80 °C for 4 h before molding. Do not blend with amine-based additives; amines can disrupt the PA12 hydrolysis equilibrium and reduce melt stability. Avoid use in continuous service above 120 °C because oxidative degradation accelerates and the initial carbon-fiber sizing may separate.
