Low-Dk Substrates, Potting Compounds & Signal-Integrity Materials
The cheapest way to add air to a laminate is to ship it in glass.
Hollow cores carry a dielectric constant near 1.0 — lowering Dk/Df of CCL resins, potting compounds and radomes without exotic resin chemistry.
Application scenarios
01
Copper-clad laminates (CCL)
10 wt% HGM in epoxy measured Dk ≈ 2.39 @ 10 MHz in published studies — a low-cost route toward mid-loss-tier laminates.
02
Electronic potting & encapsulation
Lower density, better flow, reduced cure shrinkage for BMS, LED drivers, controllers.
03
Antenna & mmWave components
Low-loss housings, connectors and radomes for 5G/6G and automotive radar.
04
EMI-shielding composites
Silver-coated HGM variants add conductivity for shielding gaskets and coatings.
Why switch — on both ledgers
Economic advantages
- Hits mid-tier Dk targets without LCP/PTFE resin budgets
- Extends resin volume — material cost per board drops
- One filler serves CCL, potting and housing lines
Functional advantages
- Dk reduction toward 1.0 via encapsulated air
- Low dielectric loss tangent
- Dimensional stability through reflow cycling
- Electrical insulation + chemical inertness
Recommended grades
HS32
HGS-32 Universal
- True density
- 0.32 g/cc
- Crush strength
- 2,000 psi (14 MPa)
- D50
- 50 µm
- Size range
- 15–90 µm
Inquire about this gradeHS38
HGS-38 Composite
- True density
- 0.38 g/cc
- Crush strength
- 4,000 psi (28 MPa)
- D50
- 45 µm
- Size range
- 15–85 µm
Inquire about this gradeHS42
HGS-42 Injection
- True density
- 0.42 g/cc
- Crush strength
- 6,000 psi (41 MPa)
- D50
- 40 µm
- Size range
- 10–80 µm
Inquire about this gradeWho buys for these scenarios
Typical customer segments and reference companies in electronics & 5g.
CCL & laminate makers
- · Panasonic Industry
- · Doosan
- · ITEQ
- · EMC (Elite Material)
- · Ventec
- · Rogers
Potting & encapsulation
- · Henkel
- · Dow
- · Wacker
- · Huntsman
- · Regional potting houses (TW, KR, DE, US)
Antenna / radar / RF
- · mmWave radar module makers
- · Base-station antenna firms
- · Connector & housing molders
SEO keywords targeted: low Dk filler CCL · hollow glass microspheres 5G PCB · potting compound lightweight · low dielectric constant additive