Hexagonal boron nitride
Govt stXiHu (West Lake) Dis.Hu (West Lake) Dis.rd: Q/TY.J08.04-2015
English alias: Boron nitride off white powder
CAS RN: 10043-11-5
1. Actual physical and chemical properties:
1.1 Molecular system: BN
one.two Molecular fat: 24.eighty one(on 1979 intercontinental atom weight)
1.three Framework method:
1.4 Melting level: 3000 ordmC(steady in the inert atmosphere)
one.five Mohs #8242 hardness: 1-two.
one.6 Density: 2.29g/cm3
1.7 Solubility: Insoluble in water, slightly soluble in hot acid.
one.eight Qualities: Hexa-boron nitride has outstanding electrical houses of electrical insulating, thermal conductivity, corrosion resistance and good lubrication. It has the powerful ability of neutron absorption. With chemical properties of balance, it has corrosion resistance to different inorganic acids, alkali, salt answers and organic and natural solvents. So does all melting metals. Physical and chemical homes unchanged unEPT1000 ordmC. The temperature can attain 3000 ordmC when utilised in nitrogen and argon. H-sort hexa-boron nitride powEPTis autoclaved to become white block, and easy to processing. Warmth resistance temperature reaches 2000 ordmC.
2. Technical indexes
| Merchandise | H-BN-A | H-BN-B | H-BN-C | H-BN-D | H-BN-E | H-BN-F |
| BN,% | ge99. | ge99. | ge99. | ge99. | ge99. | ge99. |
| B2O3,% | le0.four | le0.four | le0.3 | le0.three | le0.3 | le0.3 |
| Particle dimensions,um | ~3 | ~5 | ~ten | ~14 | ~19 | ~thirty |
| Physical appearance | White powder | |||||
three. Application: H-BN-A: It has excellent heat resistance and oXiHu (West Lake) Dis.dation resistance. Its unique particle size is modest, reunion dimensions is big. With spherical particle, it has been employed as filler, the releasing agent for casting forming and injection molding.
H-BN-B: The homes of products get to or strategy sophisticated international stXiHu (West Lake) Dis.Hu (West Lake) Dis.rds. As the particle dimensions is uniform shut to polytetrafluoroethylene, it has been employed in the ejector of high-voltage swap. With superb thermal conductivity, it has been utilized in thermal conductive plastics and rubbers. With minimal oxygen levels ( lt0.5%), it has been used to get ready the EPT ceramic resources.
H-BN-C and H-BN-D: High crystallinity. It is epigranular. Higher-purity H-BN has outstanding homes of warmth conductivity, insulation, lubrication, substantial temperature resistance and molten metal resistance. It has been use at the leading discipline, incEPT XiHu (West Lake) Dis.Hu (West Lake) Dis.illage and heat conductive substance.
four. EPT guidelines: With the bodily inert of boron nitrid, but it is toXiHu (West Lake) Dis.c by ingestion, inhalation, eye and skin make contact with. Pores and skin, respiratory program, liver, kidney and the circulatory program could be irregular by swallow and inhalation. Eye and skin get in touch with can lead to irritation. Procedure should be installed with rubber gloves, a respirator and eye security by wearing protective garments.
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