Page 223 - Engineering Plastics Handbook

Polyphenylene Ether (PPE) Blends and Alloys 193

Noryl HS1000X: 13% mineral-filled; 200°F (93°C) HDT at 264 psi
(1.82 MPa); UL-94 V-0/5VA ratings
Noryl HS2000X: 17% mineral-filled; 240°F (116°C) HDT at 264 psi
(1.82 MPa); UL-94 V-0/5VA ratings

High-modulus reinforced flame-retardant grades. These offer a broad range
of fillers, which provide increased levels of strength, stiffness modulus,
dimensional stability, and electrical conductivity. These reinforced resin
grades use a nonbrominated, nonchlorinated flame retardant, allowing for
ECO-label compliance.
The Noryl HM resin grades have been developed to serve tight-tolerance,
functional assemblies. These materials expand the fit of engineering ther-
moplastics into applications previously served exclusively by stamped
steel and die-cast metal. Applications where high modulus is a primary con-
sideration include printer bases, copier and desktop chassis, scanner and
fax integrated bases, and notebook and connection box enclosures.
Representative properties of high-modulus, reinforced, flame-retardant
PPE/PS grades appear in Table 9.5. High-modulus grades and key features
include

Noryl HM3020: 30% glass-reinforced/mineral-filled; 248°F (120°C)
HDT at 264 psi (1.82 MPa); UL-94 V-1/5VA ratings
Noryl HM4025: 40% glass-reinforced/mineral-filled; 250°F (120°C)
HDT at 264 psi (1.82 MPa); UL-94 V-0/5VA ratings
Noryl HMC3008A: 30% glass-, mineral-, carbon-fiber-reinforced;
248°F (120°C) HDT at 264 psi (1.82 MPa); UL-94 V-0 rating; static dis-
sipative; for tight-tolerance molding
Noryl HMC202M: 25% carbon-fiber-reinforced; 348°F (176°C) HDT at
264 psi (1.82 MPa); UL-94 V-1 rating; static dissipative; for tight-toler-
ance molding
Automotive instrument panel grades. These are specifically formulated
for the demanding requirements of instrument panel applications. These
grade resins can maintain impact strength and toughness over a wide
range of temperatures. They offer enhanced foam adhesion and consistent
melt behavior. In addition, these resins can provide a low part weight due
to modified PPE’s inherent low specific gravity. Uses include instrument
panel retainers, top covers, center stacks, structural components, and
trim. Representative properties of instrument panel PPE/PS grades appear
in Table 9.6. Noryl EM grades and key features include
Noryl EM6100: High impact strength; paintable; 240°F (116°C) HDT
at 264 psi (1.82 MPa)
Noryl EM6101: High impact strength; improved flow; 250°F (121°C)
HDT at 264 psi (1.82 MPa)