Toughened PC for Parts Sensitive to Cracking
Impact Modified Polycarbonate Molding Compound is a PC-based modified material developed to improve impact resistance and processing performance.
Its main characteristics include good impact resistance, resistance to stress cracking, good flow, and practical injection molding performance. Typical applications include electrical accessories, charger housings, and rear-view mirror housings.
Compared with PC grades that focus mainly on a higher flame-retardant rating, this material places more emphasis on reducing the risk of cracking caused by impact, assembly stress, or localized stress concentration.
This makes it particularly relevant to molded components with structural details that may become stress-sensitive during production or assembly.
Typical Performance of PC 305R
The typical grade is PC 305R. Its density is 1.14 g/cm³, and the molding shrinkage range is 0.50%–0.70%.
The tensile strength at break is 42 MPa, with an elongation at break of 28%. Flexural strength is 72 MPa and flexural modulus is 2100 MPa.
Notched Izod impact strength reaches 50 kJ/m². The listed flame-retardant performance is UL-94 HB.
The supplied information does not provide a heat deflection temperature for this grade. Therefore, Impact Modified Polycarbonate Molding Compound should not be assumed to meet a specific long-term high-temperature requirement without further material confirmation.
Suitable for Snap-Fits, Corners and Screw Bosses
Toughened PC can be useful for parts containing snap-fits, screw bosses, corners, or complex reinforcing ribs. These structural areas may develop concentrated stress during injection molding, assembly, or later use.
For charger housings, buyers can pay attention to drop impact, assembly stress, surface condition, and part geometry. For rear-view mirror housings, external dimensions, connection structures, and actual service conditions should be considered.
If an existing molded component already has a cracking problem, customers can provide the crack location, current material information, mold structure, and injection parameters.
The technical discussion can then consider material flow, cooling conditions, holding pressure, and structural stress instead of treating every cracking issue as a simple material-strength problem.
Trial Molding and Technical Adjustment
Diyou New Material has capabilities in material formulation, process optimization, and injection molding support.
For toughened PC, the technical team can provide material selection guidance based on required impact performance, flow behavior, and stress-cracking resistance.
The production base includes extrusion modification, injection molding verification, and material performance testing. Samples or molded parts can therefore be used to evaluate the compatibility between the material and the actual mold.
Quality management covers the process from raw material receiving to finished-product release. Customer trial feedback can also be used for later adjustments.
For buyers considering Impact Modified Polycarbonate Molding Compound, this approach is useful for complex housings where material properties, mold geometry, and injection parameters all influence cracking and final part quality.
Product Specifications
|
Parameter |
Specification |
|
Material / Typical Grade |
Impact Modified PC, PC 305R |
|
Density |
1.14 g/cm³ |
|
Molding Shrinkage |
0.50%–0.70% |
|
Elongation at Break |
28% |
|
Notched Izod Impact Strength |
50 kJ/m² |
Hot Tags: impact modified polycarbonate molding compound, China impact modified polycarbonate molding compound manufacturers, suppliers, factory
