Lihuayi Weiyuan WY-111BR Polycarbonate (PC) Resin
WY-111BR is a medium-viscosity polycarbonate (PC) resin from Lihuayi Weiyuan (Shandong Lihuayi Weiyuan Chemical Co., Ltd.), supplied by Lema Plastic as virgin pellets.It is an injection-molding grade developed for transparent parts that also require flame retardancy and impact strength, including lighting covers, appliance panels, electrical housings and precision thin-wall components.TDS, COA and batch test reports are available on request.[Request a Quote]
What WY-111BR Delivers
- Balanced flow for thin walls — MFR around 11 g/10 min (ASTM D1238) provides sufficient flow for thin-wall and long-flow-path parts without sacrificing impact performance.
- Optical clarity — Light transmittance around 90% with low haze, suitable for visible lenses, covers and light guides.
- Inherent flame retardancy — Reported UL94 V-2 without added flame-retardant masterbatch. Confirm the current UL yellow card before specifying.
- Good mold release — Helps reduce ejector marks and cycle time on multi-cavity tools.
- Consistent batch-to-batch color and flow — Important when running the grade on multiple machines or production lines.
WY-111BR Typical Properties
| Property | Typical Value | Unit | Test Method |
|---|---|---|---|
| Density | 1.20 | g/cm³ | ASTM D1505 |
| Melt flow rate (MFR) | 11 | g/10 min | ASTM D1238 |
| Notched Izod impact | 837 | J/m | ASTM D256 |
| Vicat softening point | 153 | °C | ASTM D1525 |
| Haze | 0.36 | % | ASTM D1003 |
| Light transmittance | 90.1 | % | ASTM D1003 |
The values shown above are typical values, not guaranteed specifications. Please request the current manufacturer TDS and batch-specific COA before final material qualification.
Where WY-111BR Is Used
Lighting and Optical Parts
WY-111BR can be used for LED covers, light diffusers, lens housings and other components where optical clarity and heat resistance are required together.
Electrical and Electronics
Typical applications include electrical housings, switch parts, connectors and sensor covers. The applicable flame-retardant rating should be confirmed before material approval.
Home Appliances
WY-111BR is suitable for microwave doors, transparent appliance panels, water-purifier housings and other molded appliance components.
Automotive Interior
Potential applications include interior light covers, mirror housings and interior trim brackets.
Medical and Food-Contact Parts
Medical and food-contact applications are available only for designated compliant batches with the appropriate supporting documentation. Contact us before specifying WY-111BR for regulated applications.
Processing Guidelines
Drying
Dry WY-111BR at 120–140°C for 4–6 hours in a dehumidifying dryer.Moisture should remain at or below 0.02% to help prevent silver streaks, bubbles and reduced mechanical performance.
Injection Molding
| Processing Parameter | Recommended Starting Range |
|---|---|
| Barrel temperature | 250–290°C |
| Nozzle temperature | 280–290°C |
| Mold temperature | 80–100°C |
| Injection pressure | 80–120 MPa |
| Holding pressure | 40–60 MPa |
| Holding time | 5–10 seconds |
| Injection speed | Medium |
For thin-wall components, a higher front-barrel temperature may improve flow.These conditions are starting points only. Final settings should be adjusted according to the mold, wall thickness, gate design, machine and regrind ratio.
WY-111BR vs. WY-110BR
| Comparison | WY-111BR | WY-110BR |
|---|---|---|
| MFR | Approximately 11 g/10 min | Approximately 8 g/10 min |
| Flow and thin-wall molding | Better | Limited |
| Flame class | UL94 V-2, subject to confirmation | UL94 HB, subject to confirmation |
| Best suited for | Thin-wall, transparent and flame-retardant parts | General structural and cost-driven projects |
Looking for an equivalent to Makrolon® 2805, PC-110 or PC-1100?Send us your part drawing and required properties. We will review your application and confirm a suitable matching grade in writing.[Ask for an Equivalent Grade]
Documentation and Compliance
Every shipment can be supplied with the available documentation for the exact grade and batch, including:
- Technical Data Sheet (TDS)
- Batch-specific Certificate of Analysis (COA)
- Material Safety Data Sheet (MSDS/SDS)
- RoHS statement
- REACH statement
- Batch test report
- Available UL yellow-card information
Ask us for the required document set before qualifying the grade. We will provide the document revision corresponding to the material supplied rather than a generic brochure.
Packaging and Supply
Available packing options may include:
- 25 kg bags
- 1,000 kg jumbo bags
- Palletized shipments
MOQ, stock availability and lead time are quoted according to the required quantity and destination.Contact Lema Plastic for current pricing, packing options and delivery terms.
Frequently Asked Questions
What is WY-111BR?
WY-111BR is a medium-viscosity, injection-molding polycarbonate resin manufactured by Lihuayi Weiyuan and supplied in virgin pellet form.
Is WY-111BR the same as WY-110BR?
No. WY-111BR offers better flow and carries a reported flame-retardant rating, while WY-110BR is more suitable for general structural parts.
Is WY-111BR food-contact approved?
Only designated compliant batches should be considered for food-contact applications. Request the relevant compliance documentation before specifying the material.
Can WY-111BR replace Makrolon 2805 or PC-110?
Send us your required properties and application details. Material equivalence is confirmed grade by grade rather than by product family.
What packing and MOQ options are available?
Typical packing options include 25 kg bags, 1,000 kg jumbo bags and palletized shipments. MOQ and lead time are quoted according to the order quantity and destination.
Sourcing WY-111BR from Lema Plastic
Lema Plastic supplies virgin engineering resins with batch traceability, export documentation and technical support in English.Tell us your application, wall thickness, required properties, annual volume and destination. We will confirm the appropriate grade, available documentation, packing and delivery terms.Request pricing, TDS, COA or a sample of Lihuayi Weiyuan WY-111BR today.[Request a Quote]
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