Metallization and surface coating solution on glass filler high peformance amorphous polymer compositions

1. A product comprising:

a substrate, wherein the substrate comprises a composition comprising:

(a) from 35 to 85% by weight based on the weight of the composition of -high-heat amorphous polymeric materials, having a glass transition temperature of at least 180 degrees Celsius wherein the high-heat amorphous polymeric materials comprise polyetherimide, polvphenylene sulfone, or a combination thereof,

(b) from 10 to 50% by weight based on the weight of the composition of filler selected from glass fiber, glass flake, flat glass fiber, glass bead, and combinations thereof; and

(c) from 0 to 10% by weight of composition of at least one additive selected from a flow promoter, a thermal stabilizer, a mold release agent, and combinations thereof;

a first layer disposed on the substrate; and

a second layer disposed on the first layer,

wherein the first layer is a metallized coating having a thickness of 200 to 500 nanometers and the second layer is a polymeric coating, wherein the product has a Liquid Particle Count that is less than 1,500 particles/cm 2 ;

and wherein the product has an EMI shielding effect higher than 30 dB.

2. The product of claim 1 , wherein the metallized coating is formed by one selected from physical vapor deposition (PVD), thermal evaporation (VTE), and combinations thereof.

3. The product of claim 1 wherein the metallized coating comprises at least one metal selected from Cu, Ni, Cr, and Al.

4. The product of claim 1 wherein the metallized coating is formed on at least one surface of the substrate.

5. The product of claim 1 , wherein the metallized coating is formed on opposing surfaces of the substrate.

6. The product of claim 1 , wherein the metallized coating has a thickness of from 200 to 400 nm.

7. The product of claim 1 , wherein the polymeric coating comprises

an acrylic moiety containing oligomer or monomer;

a photoinitiator; and

at least one selected from a leveling agent, a diluting agent, and combinations thereof.

8. The product of claim 7 , wherein the polymer coating has a thickness of from 5 to 20 μm.

9. The product of claim 1 , exhibiting

a cross hatch tape rating ranging from Grade 3B to Grade 5B based on ASTM D3359;

an EMI shield effect higher than 30 dB,

low outgassing detection at 85° C. showing Total Oxidizable Carbon (TOC) lower than 1000 ng/cm2,

low total leachable Ion Chromatography (IC) detection showing a concentration of anions lower than 60 ng/cm2,

low Liquid particle Counting (LPC) value of lower than 1,500 particles/cm2 after 5 time ultrasonic DI water wash, low Non-volatile residue (NVR) detected by Gas Chromatography/Mass Spectrometry (GC-MS) showing a Total Oxidizable Carbon (TOC) lower than 30 ng/cm2,

total hydrocarbon detected by Gas Chromatography/Mass Spectrometry (GC-MS) of lower than 2 ng/cm2, and

total Irgafos detected by Gas Chromatography/Mass Spectrometry (GC-MS) lower than 2 ng/cm2.

10. The product of claim 1 in the form of a hard disc drive enclosure.

11. The product of claim 1 , exhibiting:

a flexural modulus higher than 8,000 MPa;

a tensile stress higher than 100 MPa;

a heat deflection temperature (HDT) higher than 180° C.;

a notched impact strength higher than 50 J/m.

12. A product comprising:

a substrate, wherein the substrate comprises a composition comprising:

(a) from 35 to 85% by weight based on the weight of the composition of -high-heat amorphous polymeric materials, having a glass transition temperature of at least 180 degrees Celsius wherein the high-heat amorphous polymeric materials comprise polyetherimide, polyphenylene sulfone, or a combination thereof,

(b) from 10 to 50% by weight based on the weight of the composition of filler selected from glass fiber, glass flake, flat glass fiber, glass bead, and combinations thereof;

(c) from 0 to 10% by weight of composition of at least one additive selected from, a thermal stabilizer, a mold release agent, and combinations thereof; and

(d) from 1 to 10% by weight of composition of a flow promoter comprising a polyphthalamide;

a first layer disposed on the substrate; and

a second layer disposed on the first layer,

wherein the first layer and the second layer are independently selected from a metallized coating having a thickness of 200 to 500 nanometers and a polymeric coating, wherein the product has a Liquid Particle Count that is less than 1,500 particles/cm 2 ;

and wherein the product has an EMI shielding effect higher than 30 dB.