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KUREHA Microsphere S2340

Technical DataSheet | Supplied by Kureha

KUREHA Microsphere S2340 is a thermally expandable microcapsule. This precision additive is used to lower density, reduce cost, and provide acoustic and thermal insulation. On heating, it expands to a target diameter and maintains that diameter after cooling. Fully expanded, the microsphere increases 3-5X its original diameter with a 80-120X increase in volume. It is compatible in both binder and fibrous materials and can be compressed during molding and rebound to the intended shape when the pressure is reduced. Under equal weight, KUREHA Microsphere S2340 renders better volumetric filling and is 30-85% lighter than alternative mineral additives. Through consistent and accurate particle size distribution, it offers low thermal conductivity to provide extremely efficient thermal barrier properties. Applications of KUREHA Microsphere S2340 include sealants, caulks and heat activated adhesives.

KUREHA Microsphere S2340 Product details

Product Type
Physical Form
Product Status
Applications/ Recommended for
  • xxxxxxxxx
  • xxxxxxxx
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KUREHA Microsphere S2340 Properties


Value & Unit
Test Condition
Test Method
Thermal start (Tstart)
xxx °C
xxx °C
Particle size
xx µm
Expanded particle size
xxx µm
Expansion ratio
Expanded particle density
xxxxxxx g/ml
Last edited May 10, 2018
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