4 results about "Cobalt naphthenate" patented technology

The application relates to the field of flame-retardant technology, and particularly discloses a flame-retardant thermal expansion type foaming microsphere and a preparation method thereof. The thermal expansion type foaming microsphere has a core-shell structure and sequentially comprises a capsule core, an inner layer capsule wall and an outer layer flame-retardant capsule wall from inside to outside. Raw materials of the outer layer flame-retardant capsule wall include a phosphazene flame retardant, cobalt naphthenate and cyclohexanone peroxide. The flame-retardant thermal expansion type foaming microsphere provided by the application is coated with the phosphazene flame retardant which does not contain halogen, and the combination and coating rate of the phosphazene flame retardant and the foaming microsphere are improved through the cobalt naphthenate and the cyclohexanone peroxide, so that the flame-retardant efficiency and the flame-retardant stability of the foaming microsphere are significantly improved. In addition, the cobalt naphthenate and the cyclohexanone peroxide can promote the phosphazene flame retardant to degrade rapidly when a fire occurs, so that a dense carbon layer is rapidly formed on the surface of the foaming microsphere, and good flame-retardant and ablation-resistant effects are achieved. Therefore, the foaming microsphere has good foaming performance and flame-retardant performance, and has a wide application prospect.

This invention provides a castable ablation-resistant coating material and its preparation method. The material is composed of unsaturated polyester resin, cobalt naphthenate, cyclohexanone peroxide, trichloroethyl phosphate, boron phenolic resin, silicon carbide, and hexa(4-aldehyde phenoxy)cyclotriphosphazene. Through optimized compounding design of the coating material, this invention achieves a castable ablation-resistant coating material with an ablation rate as low as 0.11 mm / s and a viscosity as low as 5900 mPa·s. This material possesses both excellent ablation resistance and casting process performance, and has broad application prospects in the casting and coating of solid rocket motor propellants.

This invention provides an ultra-thin, ultra-fast repair material for MMA polymer pavement, along with its preparation and application methods. The material comprises component A and component B. Component A includes methyl methacrylate, acrylic resin, n-butyl methacrylate, 2-ethylhexyl acrylate, urethane acrylate, hydroxypropyl methylcellulose, a composite reinforcing agent, pigments, an ultraviolet shielding agent, and a dispersant. Component B includes benzoyl peroxide, methyl ethyl ketone peroxide, cobalt naphthenate, zinc isooctanoate, and dibutyl phthalate. This ultra-thin, ultra-fast repair material, through optimization of the composite initiator-promoter system, extends the application temperature range to -30°C to 35°C, solving the problems of traditional materials being unable to be applied in winter and the poor durability of thin-layer repair materials. Furthermore, it maintains high curing speed, high strength, and high durability even at low temperatures.

The invention provides low-temperature conductive paste for a perovskite or laminated cell and a preparation method of the low-temperature conductive paste. The low-temperature conductive paste can be applied to the technical field of electronic material preparation or the technical field of photovoltaic cells. The low-temperature conductive paste comprises the following components in parts by mass: 88-93 parts of composite conductive metal powder, 1-5 parts of organic resin, 0.1-3 parts of a curing agent, 0.1-0.5 part of a curing accelerator I, 0.1-0.5 part of a curing accelerator II, 1-5 parts of an organic solvent and 0.1-3 parts of an auxiliary agent, the curing accelerator I comprises at least one of dibutyltin dilaurate, dibutyltin diacetate, zinc acetylacetonate, aluminum acetylacetonate, cobalt naphthenate, zinc naphthenate and tetraisopropyl titanate; the curing accelerator II comprises at least one of nano tin dioxide, nano indium oxide, nano cerium oxide and nano niobium pentoxide. According to the low-temperature conductive paste for the perovskite or laminated cell and the preparation method thereof, the conductivity of the low-temperature conductive paste in a low-temperature curing state can be improved.