4results about How to "Reduced flame retardancy" patented technology

The application discloses a kind of natural rubber filling nickel-aluminum bimetallic hydroxide multi-walled carbon nanotube composite material for electronic component packaging, belong to packaging material technical field, the composite material includes natural rubber matrix and dispersed nickel-aluminum bimetallic hydroxide / multi-walled carbon nanotube hybrid filler, the hybrid filler is made of multi-walled carbon nanotube and nickel-aluminum layered double hydroxide grown in its surface in situ.Its preparation method is: multi-walled carbon nanotube, nickel source, aluminum source, urea and ammonium fluoride are dissolved in water and prepared hybrid filler by hydrothermal reaction;Then it is mixed with natural latex, vulcanization aid dispersion, freeze-drying, vulcanization is obtained.The application improves the dispersibility of filler by constructing LDH / MWCNT hybrid structure, uses phonon transmission optimization, synergism of loss and impedance, combustion inhibition and the friction and reinforcing mechanism of hybrid filler and natural rubber molecular chain, so that the thermal conductivity, electromagnetic wave absorption capacity, flame retardancy, mechanics and damping performance of the composite material are simultaneously improved, suitable for electronic component packaging field.

The application discloses an addition type heatproof silicone rubber composite material, a preparation method and application. The addition type heatproof silicone rubber composite material comprises the following components in parts by weight: 100 parts of vinyl silicone oil, 20-50 parts of branched vinyl phenyl polysiloxane, 30-50 parts of fumed white carbon black, 20-30 parts of fiber filler, 10-20 parts of flame-retardant filler, 10-30 parts of hydrogen-containing silicone oil and 1-5 parts of platinum catalyst. The branched vinyl phenyl polymer is introduced into the addition type silicone rubber system, the branched structure has a plurality of vinyl active sites and low viscosity characteristics, the addition type heatproof material system has good mechanical strength, flexibility and thermal stability, the reinforcing filler and the flame-retardant filler can be reduced, the mechanical properties of the material are improved, the density is further reduced, the research direction of high strength, low density and high ablation resistance of the heat protection material is met, and the application has a wide prospect in the field of solid rocket engine heat protection materials.

The invention provides a biological phenolic epoxy resin composition and application thereof. The biological phenolic epoxy resin composition comprises the following components in parts by mass: 60-140 parts of biological phenolic epoxy resin, 5-90 parts of a curing agent, 0.01-3 parts of a curing accelerator and 10-100 parts of a toughening agent. According to the biological phenolic epoxy resin composition, the biological phenolic epoxy resin is used as main body resin, and through component design and mutual compounding, a cured product can form a rich and compact multi-dimensional cross-linked network structure, so that the biological phenolic epoxy resin composition, and the prepreg, the laminated board and the metal foil-clad laminated board containing the biological phenolic epoxy resin composition have excellent low-carbon footprint characteristics; meanwhile, the heat resistance, the cohesiveness, the moisture resistance, the heat and humidity resistance, the processability and the like are obviously improved, and the comprehensive performance is excellent.

The application provides thermoplastic polyphenyl ether containing a reticular phosphorus crosslinking structure and a preparation method and application thereof. The preparation method of the thermoplastic TPV crosslinking polyphenyl ether provided by the application constructs part of PPO resins into a reticular structure through the reaction of phosphorus oxychloride and the end hydroxyl group of polyphenyl ether. The modified polyether can not only rely on an external flame retardant to improve the flame retardant property of the material, but also further improve the heat resistance and rigidity of the polyphenyl ether material under the premise of excellent flame retardant property.