Thermo expandable microcapsulesKUREHA Microsphere
KUREHA Microsphere H series
- H series are suitable for expansion at 160℃-190℃
- Within this temperature range, resins such as PVC, rubber and elastomers can be expanded.
| Series | Grade | Average particle size before expansion （μm） |
Average particle size after expansion （μm） |
Expansion ratio | Expansion start temperature (Tstart) （℃） |
Maximum expansion temperature (Tmax) （℃） |
|---|---|---|---|---|---|---|
| H | H750 | 15-25 | 60-100 | 50-65 | 120-160 | 160-170 |
| H850 | 30-45 | 155-225 | 125-155 | 120-135 | 170-185 | |
| H880 | 20-35 | 85-135 | 55-70 | 135-160 | 175-185 |
Characteristics of each grade
- H750 : Smaller diameter sphere that is suited for applications that require excellent surface finish after expansion.
- H850 : High expansion ratio sphere that offer aggressive density reduction.
- H880 : Engineered to provide both surface finish control and density reduction.
Thermomechanical Analysis : H series
※ Expansion ratio is calculated by measurement value of thermal mechanical analysis and expanded
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