61 results about "Methyltetrahydrophthalic anhydride" patented technology

The invention relates to a heat conduction insulating casting glue and a preparation method thereof. The casting compound comprises the following main components in parts by weight: (A) 100 parts of hydantoin epoxy resin, (B) 60-120 parts of anhydride curing agent, and (C) 200-400 parts of inorganic heat conductive filler, wherein the component A (per 100 weight parts) contains 10-15 weight partsof alcohol plasticizer; the component B is one or more of hexahydrophthalic anhydride, tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, methylhexahydrophthalic anhydride and methylnadic anhydride; and the component C is one or more of silica micropowder, aluminum oxide, aluminum nitride and boron nitride in 300-900 meshes. The preparation method of the casting compound comprises the following steps: mixing A and B proportionally; soaking C in ethanol solution of silane coupling agent, dispersing at a high speed, filtering, and oven-drying; heating the mixture of A and B, adding C, mixing, and debubbling; and casing, and curing. The casting compound provided by the invention has low viscosity, greatly improved heat-conducting property and improved mechanical properties, and is convenient in casting. The preparation method of the casting compound is solvent-free, and has no pollution to the environment.

The invention discloses a pouring sealant for an automobile igniter and a preparation method and an application thereof. The pouring sealant for an automobile igniter is prepared by solidifying material A and material B with the mass ratio of 100:(15-50), wherein the material A consists of spare resin, 42mum fusion silica powder, 25mum fusion silica powder, an anti-settling agent, an antifoaming agent, a coupling agent and color paste; and the material B consists of methyl tetralin phthalic anhydride, hexahydrophthalic anhydride, polyether, di-hexyl tetramethyl imidazole and antioxygen. Through formulation of components with a specific proportion, the epoxy resin pouring sealant for automobile igniters produced by a special process is used for insulating and waterproof protective encapsulation of automobile igniters. The pouring sealant for an automobile igniter has the advantages of environmental change resistance to high pressure and high-low temperature, strong cracking resistance and long service life.

This application relates to the technical field of RFID electronic tags, and specifically provides a graphene RFID electronic tag suitable for gravure printing, including a substrate and a graphene conductive paste printed on the substrate by gravure printing, The graphene conductive paste comprises the following components by weight: 5-10 parts of graphene, 1-3 parts of surfactant, 5-10 parts of dispersant, 15-25 parts of cured resin; the mass ratio of cured resin is (70 ~90): (10~30): (18~23): (1.8~5.5): (0.5~1.6) o-cresol novolac epoxy resin, polyurethane, methyl tetrahydrophthalic anhydride, trimethylolpropane and toluene ‑2,4‑diisocyanate is prepared; the surfactant includes sodium dodecylbenzenesulfonate and sodium fatty alcohol polyoxyethylene ether sulfate with a mass ratio of (0.5~0.8): (1.2~1.5). The graphene slurry provided by this application is dispersed in a cured resin in the presence of a specific surfactant, and then supplemented with a specific dispersant and auxiliary agent to make a printing slurry for the gravure printing technology to prepare RFID electronic tags Antistatic.