51results about How to "Smoke suppression" patented technology

Multi-functional microcapsules comprising a core material including a major portion of one or more functional additives and a shell material including at least one functional additive, a method of manufacturing such multifunctional microcapsules and polymeric products incorporating such multifunctional microcapsules are provided.

The invention relates to a method for preparing a flame-retardant core-shell type waterborne acrylate resin coating. The method comprises the following steps of adding water, an emulsifier and acrylic acid, raising the temperature to 40 DEG C, stirring for 30 minutes, adding a monomer A, emulsifying for 15-45 minutes, raising the temperature to 70 DEG C, starting to introduce recirculation water, raising the temperature to 80 DEG C, reacting for 2 hours, dropwise adding an initiator for 2-4 hours, and reacting for 1-2 hours; adding manganese amino acid, stirring and reacting for 1-4 hours at 80 DEG C, adding a metal salt to adjust the pH value to be 4, adding manganese acetate, stirring and reacting for 1-2 hours at 60 DEG C to obtain a core layer emulsion; simultaneously dropwise adding a monomer B and an initiator into the core layer emulsion for 1-3 hours, stirring and reacting for 3 hours at 70-85 DEG C, adding a crosslinking agent, reacting for 1-3 hours at 70-90 DEG C, cooling to 40 DEG C, adding molybdenum di(2-ethylhexyl)phosphorodithioate and an emulsifier, reacting for 40 minutes, adding the material B, stirring and reacting for 1-3 hours at 65-85 DEG C and adding aqueous ammonia to adjust the pH value to be 7-8 to obtain the flame-retardant core-shell type waterborne acrylate resin coating. By virtue of the preparation method, the flame resistance of the acrylate resin can be greatly improved and the shortcoming of yellowing of a traditional acrylate resin film can also be improved.

The invention discloses a low-pressure mist spraying system for fire protection of a kitchen. The low-pressure spraying system comprises water mist nozzles, a water supply pipe and a water-controlled fuel gas stop valve. The low-pressure mist spraying system is characterized in that a valve is arranged on the water supply pipe, and after penetrating through the valve, the water supply pipe is connected with the water mist nozzles mounted at the top of the kitchen and the water-controlled fuel gas stop valve arranged on a fuel gas pipeline respectively. The low-pressure mist spraying system for the fire protection of the kitchen, disclosed by the invention, is convenient to mount without large-scale modification for the decorated kitchen; the system can be directly accessed into household pipeline networks of tap water without arranging a special fire fighting water source; the tap water is adopted to cut off the fuel gas, so that the supply of natural gas(coal gas) can be cut off without electric power in a mist spraying process; in the mist spraying process of the low-pressure mist spraying system, fire can be effectively restrained or eliminated, smoke and dust are effectively restrained, the temperature is lowered, and the decoration and the furniture of the kitchen are not damaged further.

The present invention provides a processing agent which can restrain the generation of fine fur and tar oil and restrain the smoke generation when the synthetic fiber is executed with heat treatment in the rigorous high-temperature condition for further preventing the reduction of operability. The invention also provides a treating method using the treating agent and the synthetic fiber prepared by the treating method. The treating agent for synthetic fiber uses at least one object selected from 1) and 2): 1) a compound which is obtained by mixing at least two greases and heating in the presence of acid compound thereby executing random ester exchange, and 2) a compound which is obtained by heating the mixed grease, the aliphatic monocarboxylic acid and glycerol in the presence of acid compound thereby executing random ester exchange.