Sumitomo Osaka Cement and Lichang Industrial have jointly developed the liquid epoxy resin "Rico Zi-mainus" which improves the thermal conductivity to a maximum of 7.3 W/mK while ensuring electrical insulation. Compared to general-purpose epoxy resins, this product has a thermal conductivity of about 40 times. It can be used for heat dissipation of motors, LED lighting, power supply components, and semiconductor packages.
Two products are scheduled to be supplied, one is a "two-liquid type" in which the main agent and the hardener are mixed in a ratio of 1 to 1, and the other is a mixture of the main agent and the heat hardener. "Single liquid type". In terms of heat hardening conditions, the two-liquid type is 120 ° C, 6 to 12 hours, and the single liquid type is 130 ° C for 3 hours. The thermal conductivity can be changed in units of 1 W/mK according to user requirements. The standard product is intended to provide four types of thermal conductivity of 1, 2, 4, and 7 W/mK for the two-liquid type. The single-liquid type is intended to provide three types of thermal conductivity of 1, 2, and 4 W/mK.
In terms of insulation, both the two-liquid type and the single-liquid type have a resistivity of 1013 Ωcm or more and an insulation fracture strength of 9 kV/mm or more. In addition, the resin developed this time is also very fluid. In terms of viscosity at 100 ° C, in the two-liquid type, the product having a thermal conductivity of 4 W/mK was 2.0 Pas, and the product having a thermal conductivity of 7 W/mK was 10.9 Pas.
The resin developed this time is compounded with a variety of metal oxide fillers with high thermal conductivity in an insulating epoxy resin. Sumitomo Osaka Cement is responsible for the development of metal oxide fillers. Lichang Industrial is responsible for the development of epoxy resins and the compounding of materials. Sumitomo Osaka's cement and building materials business unit new business division said that the metal oxides are based on alumina (Al2O3). Further, in order to connect the alumina particles, another high thermal conductivity metal oxide is used as the crosslinking agent. The resin developed this time is bounded by a thermal conductivity of 3 W/mK, which changes the purity and composition of the metal oxide containing aluminum oxide. Mr. Kitagawa, the managing director of Lee Chang Industrial and the director of the development department and director of the planning management office, said that in the epoxy resin, materials and composite processes that do not reduce the viscosity when compounded with metal oxide fillers have been developed. Regarding the specific process conditions of the product, Kitagawa said "inconvenient answer".
The resin developed this time was sold on July 15, 2009. Mainly sold by the material trading company Senliu Chemicals. For the predetermined selling price, the product with a thermal conductivity of 1, 2 W/mK is 3,000 to 4,000 yen per kilogram, and the product with a thermal conductivity of 4, 7 W/mK is 8,000 to 9000 yen per kilogram. Samples are also planned to be offered at a price of 10,000 yen per kilogram. Sumitomo Osaka Cement will also be sold together. In fiscal 2009, we plan to produce 500kg per month and strive to achieve annual sales of 200 million yen.
Two products are scheduled to be supplied, one is a "two-liquid type" in which the main agent and the hardener are mixed in a ratio of 1 to 1, and the other is a mixture of the main agent and the heat hardener. "Single liquid type". In terms of heat hardening conditions, the two-liquid type is 120 ° C, 6 to 12 hours, and the single liquid type is 130 ° C for 3 hours. The thermal conductivity can be changed in units of 1 W/mK according to user requirements. The standard product is intended to provide four types of thermal conductivity of 1, 2, 4, and 7 W/mK for the two-liquid type. The single-liquid type is intended to provide three types of thermal conductivity of 1, 2, and 4 W/mK.
In terms of insulation, both the two-liquid type and the single-liquid type have a resistivity of 1013 Ωcm or more and an insulation fracture strength of 9 kV/mm or more. In addition, the resin developed this time is also very fluid. In terms of viscosity at 100 ° C, in the two-liquid type, the product having a thermal conductivity of 4 W/mK was 2.0 Pas, and the product having a thermal conductivity of 7 W/mK was 10.9 Pas.
The resin developed this time is compounded with a variety of metal oxide fillers with high thermal conductivity in an insulating epoxy resin. Sumitomo Osaka Cement is responsible for the development of metal oxide fillers. Lichang Industrial is responsible for the development of epoxy resins and the compounding of materials. Sumitomo Osaka's cement and building materials business unit new business division said that the metal oxides are based on alumina (Al2O3). Further, in order to connect the alumina particles, another high thermal conductivity metal oxide is used as the crosslinking agent. The resin developed this time is bounded by a thermal conductivity of 3 W/mK, which changes the purity and composition of the metal oxide containing aluminum oxide. Mr. Kitagawa, the managing director of Lee Chang Industrial and the director of the development department and director of the planning management office, said that in the epoxy resin, materials and composite processes that do not reduce the viscosity when compounded with metal oxide fillers have been developed. Regarding the specific process conditions of the product, Kitagawa said "inconvenient answer".
The resin developed this time was sold on July 15, 2009. Mainly sold by the material trading company Senliu Chemicals. For the predetermined selling price, the product with a thermal conductivity of 1, 2 W/mK is 3,000 to 4,000 yen per kilogram, and the product with a thermal conductivity of 4, 7 W/mK is 8,000 to 9000 yen per kilogram. Samples are also planned to be offered at a price of 10,000 yen per kilogram. Sumitomo Osaka Cement will also be sold together. In fiscal 2009, we plan to produce 500kg per month and strive to achieve annual sales of 200 million yen.
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