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Tm Sw Series Sphere Like Alumina Filler - China

price: contact company for price


1) High filling: Particle size distribution is reasonable, filling efficiency as resin filler is high, and compound of low viscosity and good fluidity can be made.

2) High thermal conductivity: Filling degree is high. Compared with the thermal conductivity of crystalline silicon, that of mixture is higher.

3) Low wear rate: It appears spherical. It wears less on the mixer and molding tool.

4) Electrical and moisture resistance: There is a very small content of ion impurities, such as Na and Cl, so it has good electrical and moisture resistance.

5) Particle Morphology: Around sphere shape, high crystallization


1) Heat sink: radiating substrate filler, heat sinking oil, phase change film

2) Semiconductor filler

3) Special air abrasive

4) Organosilicon heat sinking adhesive and mixture filler

5) Ceramic filter membrane

6) Coated powder, etc.

Main Technical Parameters of TM-SW Series Sphere-like Alumina Filler:


Type D50

(um) Specific Surface Area

(m2/g) Chemical Composition (wt/%) Bulk Density

(g/cm3) L.O.I.

(0-1100degree centigrade)


(%) Fe2O3

(%) T-Na2O

(%) EC

(uS/cm) Na+

(ppm) Cl-


SW-05 5±1 0.7 <=0.06 <=0.25 <=0.05 <=40 <=60 <=3 1.1 <=0.03

SW-10 9±1 0.5 <=0.06 <=0.25 <=0.05 <=40 <=60 <=3 1.2 <=0.02

SW-20 20±1 0.3 <=0.05 <=0.25 <=0.03 <=30 <=40 <=2 1.5 <=0.02

SW-30 28±2 0.3 <=0.05 <=0.25 <=0.03 <=30 <=40 <=2 1.6 <=0.02

SW-45 45±3 0.3 <=0.05 <=0.25 <=0.03 <=30 <=40 <=2 1.6 <=0.02

Company Contact:

  • Phone: 8637168138155

  • Address: No.25 Anyang Road Shangjie District , Zhengzhou, China

  • Email: Email

Published date: December 29, 2013 -

  • Business Description: Zhengzhou Tianma Micropowder Co., Ltd. is a professional alumina manufacturer that engages in scientific research for, producing of and testing (trading) of alumina products. The company is a member of the China Association of Industry and Commerce and maintains a long term relationship with the China Academy of Science. The company controls its own import and export operations. In 2003, Zhengzhou Tianma was awarded ISO9001: 2000. In 2004, the company was confirmed as a Hi tech Company by the government of Henan province.
    The factory is constructed on 16,800 square meters of land with over 14,500 square meters of facilities. Our company owns both land and the factory which contains an environment friendly high temperature gas tunnel kiln capable of an annual output of 15,000 tons. We have excellent equipment, advanced techniques, a qualified technical staff and complete inspection facilities. We produce over 20 products in this one facility. The product line includes α AL2O3 for color TV, α AL2O3 for IC chip manufacturers, α AL2O3 for high voltage appliances, α AL2O3 for Single Crystal Silicon Wafer fabrication, α AL2O3 for specialty ceramics and refractory applications as well as sheet and ceramic powders. Our products are of high quality, which is reliably supplied. We have been awarded patents on some of our products. Our techniques and quality meet world class standards, and some exceed world class standards. Exports go to the USA, Japan, Korea, and Taiwan. We have earned the trust of the worlds leading producers.
    Utilizing ISO9001: 2000 techniques, the company continues to improve our quality systems in order to sustain our high standards. By doing so, we can guarantee the quality of our products. Our high quality products and competitive cost permit our customers to enjoy the benefits of profitability.
    Our Corporate philosophy is: maintaining highly qualified staff, building a world class facility, and producing high quality products. We strive to supply high quality products and services in order to obtain the trust and support of our customers and society in general.

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