As we all know, the continuous progress of material science promotes the rapid development of society, in many fields of material science, thermally conductive composites play an important role in many application scenarios, the development of which has been attracting much attention.
Thermally conductive composites have rich end-use scenarios
Thermally conductive composite materials have rich application scenarios by virtue of their good heat dissipation ability and excellent comprehensive performance, and the following briefly introduces some common application areas:
In the field of electronic devices - thermal conductive composite products such as thermal conductive plate, thermal conductive paste, thermal conductive gel, thermal conductive sheet, etc., as the thermal interface material between high-performance chips and heat sinks, they can effectively reduce the temperature of the electronic devices; for the electronic components that generate more heat when working, thermal conductive composite materials can be used for the manufacture of circuit boards substrate, to improve For electronic components that generate more heat when working, thermally conductive composite materials can be used to make the substrate of circuit boards to improve the heat dissipation performance of circuit boards, avoiding overheating of electronic components and leading to circuit failures; the use of thermally conductive composite materials in the shells of some electronic equipment can avoid the accumulation of heat inside the equipment and prolong the service life of equipment. Realistic scenarios of smart phones, laptops, power distribution cabinets, charging piles and other equipment terminals, are applied to thermally conductive composite products.
Aerospace field - satellites, spacecraft, space stations, etc. face extreme temperature environments in space and need good thermal control systems to ensure their normal operation, thermally conductive composite materials can be used for structural parts of satellites and spacecraft, solar panels, antennas and other components.
New energy vehicle field - the high-speed rotation of the motor, the operation of the electronic control, battery charging and discharging and other automobile use process generates more heat, heat accumulation can easily lead to the related parts performance decline, life expectancy, and in serious cases of spontaneous combustion, the use of thermally conductive composites can effectively improve the safety of automobile operation.
5G field - 5G base station power is large, high heat generation, need efficient heat dissipation system to ensure its stable operation. Thermally conductive composite materials can be used in heat sinks, filters and other components of 5G base stations to improve the heat dissipation performance of base stations.
H-BN - a super helper in the preparation of thermally conductive composite materials
Among the various raw materials for the preparation of thermally conductive composites, hexagonal boron nitride (h-BN) stands out among the many thermally conductive raw materials by virtue of its excellent comprehensive performance, which is specifically reflected in the following aspects:
Excellent thermal conductivity - h-BN has a very high thermal conductivity of up to 300W/(m-K), and the room temperature thermal conductivity of hexagonal boron nitride thermo-pressing ceramics can reach 50W/(m-K), which is close to that of steel. Adding it to the composite material can greatly improve the thermal conductivity of the material when forming the thermal conductive pathway, which has been confirmed in numerous studies and practical use. When h-BN is used in combination with other thermally conductive raw materials, the effect of 1+1＞2 can be realized in terms of thermal conductivity and other properties.
Good electrical insulation properties - h-BN is a good electrical insulator whether at room temperature or in a high temperature environment, the room temperature resistivity is often above1016Ω.cm, and the resistivity can be maintained above104Ω.cm at a high temperature of about 1000°C. h-BN has a very high breakdown voltage, generally above 30kV/mm. This gives hexagonal boron nitride thermally conductive composites a great advantage in electronics, electrical and other fields that require high insulating properties.
Good thermal performance - h-BN has high thermal stability and high temperature resistance, in the oxygen atmosphere can withstand temperatures up to 900 ℃, in the neutral reducing atmosphere up to 2000 ℃, at the same time h-BN has a flame retardant properties, not easy to burn, which makes the use of thermal conductive composites added h-BN temperature and fire safety This makes the use temperature and fire safety of thermal conductive composites with h-BN greatly improved.
Good chemical properties - h-BN has good chemical stability and corrosion resistance, which makes the hexagonal boron nitride thermally conductive composites in corrosive environments can be long-term stability of thermal conductivity and other properties. Meanwhile, h-BN is non-toxic and friendly to the environment and human body, which is in line with the concept of green development.
In summary, with the continuous deepening of the research, h-BN has an irreplaceable role in the field of thermally conductive composites with its excellent various properties, and its application field will be more extensive, which is a secret weapon to enhance the performance of thermally conductive composites, and provides a strong impetus for the development of the thermal management field and the advancement of related industries.
BN(CHINA) Technology--Hexagonal Boron Nitride Powder TOP Service Provider
BN(CHINA) Technology h-BN deep-rooted production technology, with advanced continuous calcination equipment, high purity products, excellent and stable performance, good product consistency, strong batch supply capacity, cost advantage is obvious. We currently have four specifications of products to choose from: PBN700 (purity ≥ 99.5%), PBN500 (purity > 99%), PBN300 (purity > 98%), PBN100 (purity > 97%), which are available in crystalline particle size of 1-5 μm, and powder particle size D50 between 4 μm and 20 μm. These four products have been successfully applied in the industries of thermally conductive fillers, lubricants, high temperature coatings, mold release agents, cubic boron nitride synthesis, and boron nitride ceramics.
