デンカ株式会社

DENKA SPHERICAL ALUMINA

Product Information

Outline

Denka Spherical Alumina is high sphericity alumina, developed by Denka’s unique high temperature melting technologies.
Denka spherical alumina can provide high thermal conductivity and improvement of the surface hardness of the various resins or rubbers by filling them.
Low ionic impurity type is also available. This can be used in the electronic materials field where reliability is required.

Characteristics

Easily filled with high content to various types of resins/rubbers, and can also control wear in kneading machines or molds compared with irregular-shaped fillers.
The particle distribution can be adjusted according to use (particle diameter: Submicron-100µm micrometer).
It is possible to propose powder composition with different materials such as Denka spherical magnesia.
Various surface treatments are possible.

Uses

Thermal conductive filler for thermal interface material

Heat dissipation pad for lithium-ion batteries for electric vehicles and hybrid vehicles
Heat dissipation sheet for various semiconductor packages
High thermal paste for 5G communication base stations
High thermal paste for in-vehicle electrical equipment

Filler of Epoxy Molding Compounds for semiconductor packages.
Filler of Thermal plastic.
Powder for mold release of ceramics sintering.
Abrasive grain.
Polishing semiconductor materials, silicon wafer and various electronic substrates.
Thermal Spraying.
Filler of Heat-dissipating paint, Heat-shielding paint.

Related Information

Spherical Alumina／DAM Grade

Standard Type

		DAM-03	DAM-05	DAM-07	DAM-10	DAM-20	DAM-45	DAM-70	DAM-90
Mean particle size(d50) (μm)		4.7	6.8	12.5	11.3	24.6	42.8	74.6	97.1
Specific surface area(㎡/g)		0.4	0.4	0.3	0.3	0.2	0.2	0.1	0.1
Electric Conductivity(μS/cm)		93	100	53	50	50	39	69	13
Ionic Impurities(ppm)	Fe²⁺ Na⁺	8 37	15 34	12 36	9 40	10 80	13 50	18 47	27 52

Spherical Alumina／DAW Grade

Low Na+ Type

		DAW-01	DAW-03	DAW-05	DAW-07	DAW-10	DAW-20	DAW-45	DAW-70	DAW-90
Mean particle size(d50) (μm)		1.9	4.9	6.4	11.4	12.0	23.8	46.1	75.9	97.4
Specific surface area(㎡/g)		1.0	0.5	0.4	0.4	0.3	0.2	0.2	0.2	0.1
Electric Conductivity(μS/cm)		8	8	9	8	8	8	5	6	7
Ionic Impurities(ppm)	Fe²⁺ Na⁺	13 3	7 7	13 8	9 6	10 4	10 8	14 7	20 11	28 10

Super Fine Spherical Alumina／ASFP grade

	ASFP-20	ASFP-40	ASFP-03S	ASFP-05S	ASFP-07S
Mean particle size(d50) (μm)	0.3	0.4	0.4	0.6	0.9
Specific surface area(㎡/g)	10.8	6.3	6.0	3.6	2.6
Electric Conductivity(μS/cm)	14	20	171	62	40

Contact Us

Electronics & Innovative Products

Advanced Specialty Materials Dept.

TEL: +81-3-5290-5541
FAX: +81-3-5290-5078

Contact Form

It is the customer’s responsibility to always test products before use and confirm their fitness for purpose and safety.
Any product contained on this Website or any product using a product contained on this Website should be disposed of in accordance with laws and regulations.
Before use, please confirm the detailed method of use, precautions, and other information by using the technical documentation and Material Safety Data Sheet. These materials are available from the relevant Division. Please request them.
The information contained in this website is subject to change without notice as new knowledge becomes available.