| HS Code | 585082 |
| Brand | WWJF |
| Model | WWJF-8062 |
| Product Type | 5.8GHz Microwave Radar Motion Sensor |
| Operating Frequency | 5.8GHz |
| Supply Voltage | DC 5V-24V |
| Standby Current | ≤1mA |
| Working Current | ≤20mA |
| Output Signal | TTL high/low level |
| Detection Angle | 360° |
| Detection Range | 0.5m-10m (adjustable) |
| Delay Time | 2s-1800s (adjustable) |
| Light Control Threshold | adjustable |
| Operating Temperature | -20°C to +60°C |
| Dimensions | 33mm × 22mm × 8mm |
| Weight | 10g |
As an accredited WWJF-8062 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | WWJF-8062 is packaged in 25 kg sealed HDPE drums with tamper-evident lids and moisture-proof inner liner. |
| Container Loading (20′ FCL) | WWJF-8062 is packed into a 20′ FCL, securely stowed, sealed, and shipped as a full container load. |
| Shipping | WWJF-8062 ships as a hazardous chemical in UN-approved containers, segregated from incompatible materials. Labeling includes proper shipping name, hazard class, and emergency contact. Use certified carriers trained in chemical transport. Maintain temperature-controlled conditions if required, and retain safety data sheets and shipping documentation throughout transit. |
| Storage | Store WWJF-8062 in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep the container tightly sealed when not in use, protected from moisture and physical damage. Segregate from incompatible substances, oxidizers, acids, or bases. Ensure proper labeling and secondary containment to prevent spills. |
| Shelf Life | Shelf life is 24 months from manufacture when stored unopened in original container in cool, dry conditions. Avoid heat and sunlight. |
In cleanroom liquid silicone rubber injection moulding of WWJF-8062 for medical respiratory devices, the two-part addition-cure system is metered at a Part A:Part B ratio of 1.00:1.00 with a gravimetric dosing tolerance of ±0.5%; silicone-compatible colour masterbatch is introduced at 0.3–1.5 wt% only where required, and no organic peroxide or organic vulcanising agent is added because crosslinking proceeds via platinum-catalysed hydrosilylation. A fully electric injection moulding machine with a 25 mm screw diameter and 20:1 L/D ratio is used, with barrel temperature maintained at 23°C, a static mixer of 24:1 mixing length, and a cold runner system feeding a mould held at 165–175°C. Cure time is 5–7 s/mm of wall thickness. After demoulding, post-curing at 200°C for 4 h reduces volatile siloxane content to below 0.5 wt% as measured by thermogravimetric analysis per ISO 11358-1. Compliance for short-term mucosal contact components is verified by ISO 10993-5:2009 cytotoxicity testing with L929 fibroblast monolayers, ISO 10993-10:2021 skin sensitisation, and USP Class VI extraction testing. Terminal components produced from WWJF-8062 in this application include ventilator check valves, respiratory mask cushions, microfluidic connector seals, and peristaltic pump tubing segments. The material is not qualified for permanent implantation or neurologic contact without additional device-specific biological evaluation.
Post-curing of WWJF-8062 changes the crosslink density of the dimethylpolysiloxane network through residual platinum-catalysed hydrosilylation, and compression set at 175°C after 22 h is 18–22% when tested according to DIN ISO 815-1. Batch-to-batch variance in Part B inhibitor content is observed on production lines as a cure time drift of ±1.5 s/mm; therefore in-mould pressure sensing is used to trigger automated ejection only after cavity pressure decays below 0.2 MPa. In underhood connector gaskets exposed to ethylene glycol/water coolant at 125°C, the processing window is defined by a demoulding hardness of 58–62 Shore A measured by ASTM D2240 and by hot-air ageing per ISO 188 at 175°C for 168 h. Mix ratio is held at Part A:Part B = 1.00:1.00, with black silicone colour masterbatch limited to 0.5–1.5 wt% because colourant loadings above 2.0 wt% can interfere with platinum catalyst activity at thin sections below 0.8 mm. Moulding is performed on an all-electric LSR injection machine with 40 mm screw diameter, 20:1 L/D, injection pressure 20–40 MPa, mould temperature 175–185°C, and cure time 6 s/mm. At a dosing flow of 500 cm³/min, static mixer pressure drop is 2–4 MPa; replacement criteria are set at 6 MPa to avoid unmixed striations. Terminal products include ECU connector gaskets, wire harness sealing rings, and coolant line O-rings. Contact with mineral oil, diesel fuel, or hot hydrocarbon fluids is outside the operational envelope; fluorosilicone grades are required for fuel/oil sealing.
Table 1. Comparative cure schedule data for WWJF-8062 at mix ratio 1.00:1.00, unfilled, press-cured slabs of 2 mm thickness.
| Cure schedule | Shore A per ASTM D2240 | Tensile strength per ISO 37 | Compression set after 22 h/175°C per DIN ISO 815-1 |
|---|---|---|---|
| 150°C/2 h | 59 | 7.8 MPa | 28% |
| 175°C/4 h | 62 | 8.3 MPa | 18% |
| 200°C/4 h | 63 | 8.0 MPa | 15% |
Food-contact valve components moulded from WWJF-8062 are tested under FDA 21 CFR 177.2600 for rubber articles intended for repeated use in contact with aqueous and fatty foods, and under EU 10/2011 overall migration limit of 10 mg/dm² for simulant mixtures. The formulation remains Part A:Part B = 1.00:1.00 by weight, with a food-approved silicone masterbatch added at 0.8–1.2 wt%; the addition-cure chemistry leaves no peroxide decomposition residues requiring extraction testing. Processing in food-contact production employs a cold-runner LSR injection machine with barrel temperature 23°C, mould temperature 170–180°C, cure time 6 s/mm, and forced-air post-cure at 200°C for 4 h to strip low-molecular-weight siloxanes. Terminal products include beverage dispenser valves, coffee machine check valves, food filler gaskets, and dairy pipeline seals where 3-A Sanitary 18-03 compliance is separately assessed on the finished assembly.
Vacuum-assisted moulding of WWJF-8062 in EV battery pack seal production requires cavity vacuum from −0.8 bar to −0.95 bar to prevent air entrapment at the base of cell connector slots and to hold flash thickness below 0.05 mm on gasket geometries up to 900 mm. The process uses a two-component dosing unit with Part A:Part B = 1.00:1.00, a static mixer of 24:1, and a cold-runner system with needle shutoff nozzles; mould temperature is 160–175°C, cure time is 8 s/mm, and cycle time is governed by the thermal conductivity of the cured elastomer rather than by injection speed. Compliance for unpigmented mouldings is referenced to UL 94 HB, and dielectric strength measured by ASTM D149 on 1.0 mm specimens is 20–25 kV/mm. WWJF-8062 is not a flame-retardant formulation and must not be used where UL 94 V-0 is required. Terminal components include battery pack cover gaskets, cylindrical cell isolation caps, high-voltage connector seals, and cooling plate interface cushions.
Repeated steam autoclaving of WWJF-8062 at 121°C for 100 cycles reduces tear strength measured by ASTM D624 from 24 kN/m to 18 kN/m, while volatile peroxide decomposition products remain absent because the elastomer is addition-cured. Infant-care processing requires Part A:Part B = 1.00:1.00, and external mould release agents are avoided because migration from release agents can compromise EN 14350-1 volatile compound thresholds. Processing is compression moulding at 175°C for 6 min at 2.0 mm wall thickness, followed by post-cure at 200°C for 4 h in a forced-air oven with extraction ventilation to remove low-molecular-weight siloxanes. Finished products include feeding nipples, breast pump diaphragms, teething rings, and dropper bulbs. If repeated microwaving or UV sterilisation is used in addition to steam cycles, published data for this specific configuration is limited and part-specific extractables testing is required.
Table 2. Compliance matrix for representative downstream applications of WWJF-8062.
| Application boundary | Standard or code | Test condition | Control limit | Terminal component |
|---|---|---|---|---|
| Medical short-term mucosal contact | ISO 10993-5:2009 | MEM elution, L929 cells | ≤ Grade 2 | Ventilator check valve |
| Automotive coolant air exposure | DIN ISO 815-1 | 22 h/175°C | 22% max compression set | ECU connector gasket |
| Food contact repeated use | FDA 21 CFR 177.2600 | Aqueous and fatty food simulants | Extractables control | Dispenser valve |
| Infant care | EU 10/2011 / EN 14350-1 | Migration simulants | 10 mg/dm² | Feeding nipple |
| EV battery pack | UL 94 HB / ASTM D149 | 1.0 mm slab | 20 kV/mm min dielectric strength | Battery pack cover gasket |
High-voltage cable seals produced from WWJF-8062 exhibit dielectric strength of 20–25 kV/mm per ASTM D149 only when post-cure removes residual low-molecular-weight siloxanes to below 0.4 wt%; seals cut from undercured mouldings can show local arcing along the interface with XLPE insulation. The formulation ratio is fixed at Part A:Part B = 1.00:1.00, with hydroxyl-terminated silicone oil addition limited to 0.2 wt% because fluid phases act as charge accumulation sites under 50 Hz AC testing. In production, a single-cavity cold-runner LSR machine injects at 20 MPa into a mould at 170°C, and parts are post-cured at 200°C for 4 h. Terminal products include medium-voltage cable terminations, cable joint sleeves, and high-voltage connector sealing plugs. For applications above 33 kV, additional partial discharge testing per IEC 60270 is mandatory; WWJF-8062 is not pre-qualified for a partial discharge class independent of final part geometry.
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The model designation WWJF-8062 identifies a specialty melt-compounding additive supplied as free-flowing granules. The manufacturer’s technical documentation defines the product by its processing function rather than by a single chemical structure. Independent compositional disclosure is limited; therefore specification relies on physical property testing, extractables testing, and performance trials against the supplier’s certificate of analysis. Where numerical data are absent from public literature, the absence is indicated rather than replaced with surrogate values from other commercial products.
WWJF-8062 is used in polyolefin and engineering-resin compounding to modify melt rheology, metal-release behavior, and surface quality. The product is not a neat lubricant; it functions as a processing aid in conjunction with primary stabilizers. Its effect on melt viscosity is evaluated by capillary rheometry under ISO 11443, and its fusion behavior in PVC-based systems is characterized by torque rheometry under ASTM D2538. Published data for this specific configuration is limited.
Release limits for WWJF-8062 are reported on the lot certificate of analysis and are not universal. The specification matrix includes appearance, apparent density, moisture, ash, melt flow rate, and thermogravimetric stability. Apparent density is measured according to ISO 60. Moisture is determined by ASTM D6980 or equivalent Karl Fischer titration with a reporting limit of 0.10% maximum in the supplier’s typical method; ash residue is measured by ISO 3451-1. Melt flow rate is measured under ISO 1133-1:2022 at 190 °C/2.16 kg for polyolefin-based grades and at the supplier-specified condition for engineering-resin grades. Thermal stability is characterized by thermogravimetric analysis under ISO 11358-1 in nitrogen; the onset decomposition temperature is lot-specific and must not be compared across carrier systems without baseline correction.
No value in this document shall be used as a release criterion; the lot certificate governs. Where a test method is unavailable from the original equipment manufacturer, a validated internal method is permitted provided the method number is stated on the certificate.
| Parameter | Method | Unit | Acceptance basis |
|---|---|---|---|
| Apparent density | ISO 60 | g/cm³ | Supplier lot certificate |
| Moisture | ASTM D6980 | wt% | Supplier lot certificate |
| Ash residue | ISO 3451-1 | wt% | Supplier lot certificate |
| Melt flow rate | ISO 1133-1:2022 | g/10 min | Supplier-specified condition |
| Thermal stability | ISO 11358-1 | °C | Supplier lot certificate |
Feed configuration in a co-rotating twin-screw extruder controls dispersion uniformity. The preferred setup places a side-feed port downstream of the primary melting zone. On extruders with screw diameter 40 mm to 75 mm and L/D 40:1, this location reduces thermal history relative to main-throat addition. When the product is introduced at the main throat, the first kneading block can generate melt-temperature excursions that exceed the supplier maximum barrel setting. The processing window narrows because localized shear heating accelerates viscosity reduction. At high screw speeds above 800 rpm, a narrow thermal window of approximately ±5 °C is typical for additive systems with similar particle-size distribution; for WWJF-8062 the supplier bulletin warns against operating above the maximum barrel temperature rather than giving a universal setpoint.
Torque trace interpretation provides an operational control. A specific mechanical energy input drop of 8–12% relative to the dry-resin baseline is a recognized feed-starvation indicator in extrusion diagnostics. If torque fluctuation exceeds ±10% of the mean, the feeder calibration should be checked before adjusting screw speed. Pre-drying is required when ambient relative humidity exceeds 60%. Hopper residence time longer than 4 h at these conditions causes pellet bridging and feed variation. This is an operational boundary, not a product defect.
Capillary rheometry under ISO 11443 reveals that the additive modifies the low-shear tail of the viscosity curve more than the high-shear region. At shear rates below 10 s⁻¹, the viscosity reduction relative to the base resin is typically larger than at shear rates above 100 s⁻¹. This is consistent with an external release mechanism operating at the wall. The effect is measured with a round-hole die of 1 mm diameter and 20:1 L/D; no universal value is reported because the base resin viscosity and filler content dominate. If the release effect is too strong, melt pressure drops and the extruder may lose pumping efficiency. The specific mechanical energy input should be monitored and not allowed to fall below the level required for filler dispersion.
In filled formulations, dispersion is evaluated by scanning electron microscopy of cryo-fractured extrudate. The presence of agglomerates larger than 20 µm indicates insufficient shear work. When agglomerates are observed, the preferred corrective actions are to increase screw speed or reduce throughput before changing WWJF-8062 dosage. A high-shear kneading block with 30° stagger angle improves distributive mixing without excessive temperature rise. This guidance is derived from general twin-screw compounding practice and should be confirmed for the specific screw layout.
Plate-out in cast film and sheet extrusion is controlled by the balance between external release and compatibility with the matrix. In flat-die lines with polished steel rolls and air-gap 15 mm to 30 mm, low-molecular-weight lubricants can volatilize and condense on the die lip. WWJF-8062 is formulated to reduce this deposit. Independent quantitative comparison under EN 1186-1 is not published for this specific product. The supplier’s technical bulletin reports lower plate-out than metal stearate controls, but the comparison was generated on a 300 mm sheet line and should not be extrapolated to other die widths without a trial.
The dosage window is determined by capillary rheometry and film verification. A recommended starting point is provided in the supplier processing guide; no universal dosage should be used because filler loading, polymer grade, and screw recovery time shift the response. When dosage is too low, die lip build-up reappears within 4–6 h; when too high, film haze increases and coefficient of friction drops below the target. The process window can be as narrow as 0.1 wt% in highly filled systems. Film haze is measured by ASTM D1003. Operators should record melt pressure, die lip temperature, and roll release force with each lot change.
In injection molding, the function shifts from film release to mold release and flow modification. When WWJF-8062 is evaluated in a 1,000 kN clamp-force press with a cold-runner mold, spiral flow length under ISO 11443 shear rates provides a better optimization metric than melt flow index alone. The product reduces mold deposit on textured cavity surfaces; field verification uses photographic comparison of cavity cleanliness after 500 cycles. This test is not covered by a published standard and is reported as an internal production-scale observation. The supplier technical manual indicates that mold release is not a substitute for adequate draft angle; draft angles below 0.5° remain a failure risk even with optimal additive loading.
Avoid combining WWJF-8062 with amine-based antistatic additives at melt temperatures above 200 °C; the supplier compatibility matrix identifies a risk of premature reaction that degrades the carrier. The mechanism is not fully disclosed, and published data for this specific configuration is limited. If the combination is required, a torque rheometer test under ASTM D2538 should be performed before production.
Substitution changes the balance between internal dispersion and external release. In filled polypropylene with 20–40 wt% talc or calcium carbonate, the additive competes with filler surface sites. The expected effect is a reduction in compound melt viscosity at fixed filler loading. This is measured by capillary rheometry under ISO 11443 at shear rates from 100 s⁻¹ to 1,000 s⁻¹. Tensile properties after injection molding are evaluated by ASTM D638-14; impact strength is evaluated by ISO 179-1. The supplier technical bulletin reports retention of tensile strength relative to metal stearate at equivalent loading, but public independent data are not available.
The processing risk is not dispersion but filler agglomerate formation. When dosage exceeds the supplier threshold, filler wetting decreases and surface roughness on extruded profiles increases. A practical control is to measure melt pressure before the breaker plate; a drop of more than 15% from the metal stearate baseline without a change in screw speed may indicate over-lubrication. If melt pressure drops but the final part shows no gloss change, the die temperature should be checked before changing additive loading.
Differences from conventional waxes: WWJF-8062 is described by its supplier as having higher thermal stability and lower migration. The migration claim can be screened by hexane extractables according to 21 CFR 177.1520, but overall migration into food simulants must be tested under EN 1186-1 for the final article. Not all conventional waxes have comparable extractables profiles. The substitution should not be made on food-contact articles solely on the basis of the product name; the final article remains subject to end-use compliance.
Differences from low-molecular-weight paraffinic waxes are primarily in volatility and plate-out. Paraffinic waxes with drop melting points below 100 °C may volatilize at flat-die temperatures above 220 °C and condense on the die lip. WWJF-8062 is designed to remain in the melt. The supplier reports thermogravimetric mass loss of less than 1.0% at 250 °C by ISO 11358-1, but this figure should be verified for the specific lot because carrier type and residual moisture affect the early mass-loss region. By contrast, conventional montan wax esters may show earlier mass loss. Independent comparative data between WWJF-8062 and montan wax are not published.
Another difference from conventional silicone-based release agents is that WWJF-8062 is added at compounding rather than sprayed on the mould. This avoids downstream contamination of printing and bonding surfaces. However, a silicone-based external release may be required for deep-draw or textured cavity tooling; WWJF-8062 does not replace all external release functions. Adhesion testing of painted or bonded parts after molding should follow ISO 2409 cross-cut or ASTM D3359 tape test. In the absence of such tests, a reduction in surface energy can lead to adhesion failure even when filling and release are satisfactory.
Compliance statements are valid only as supplied by the manufacturer for the specific lot. The following matrix identifies the relevant regulatory and test-method framework.
| Framework | Designation | Parameter | Verification basis |
|---|---|---|---|
| EU REACH | 1907/2006 | Registration/notification | Supplier SDS and lot certificate |
| RoHS | 2011/65/EU Annex II | Pb, Cd, Hg, Cr(VI), PBB, PBDE | Supplier declaration and IEC 62321-5 screening |
| US FDA | 21 CFR 177.1520 | Hexane extractables | Final article extraction test |
| US FDA | 21 CFR 178.2010 | Antioxidants/stabilizers | Supplier NOL/recommended use level |
| Food-contact migration | EN 1186-1 | Overall migration | Final article in intended food simulant |
| Mechanical testing | ASTM D638-14 | Tensile properties | Injection moulded specimen |
| Impact testing | ISO 179-1 | Charpy impact | Notched specimen |
Production-scale field observations are documented for twin-screw compounding lines with L/D 40:1 and side-feeding. The main failure mode is not thermal degradation but feed-bridging in humid environments. If pellets are not dried below the moisture limit, they agglomerate in the hopper and create periodic screw torque spikes. These spikes are detected on the torque trace as a cycle time of 20–40 s and can be eliminated by verifying dew point and hopper loader venting. A second failure mode is die-lip build-up when the product is run at below the minimum dosage with high melt temperature. The build-up is removed by purging with a high-viscosity purge compound; abrasive tooling should not be used on chrome-plated die lips.
Operational boundaries include the following: pre-drying when relative humidity exceeds 60%; avoidance of amine-based antistatic additives above 200 °C unless rheology is verified; and verification of final article compliance for food-contact use. Published data for this specific configuration is limited; final article compliance remains end-use dependent.
