A kind of microcapsule flame retardant and preparation method thereof
A technology of microcapsules and flame retardants, which is applied in the field of microcapsule flame retardants of wood-plastic composite materials and its preparation, can solve the adverse effects of polymer materials on physical and mechanical properties, the decline of material flame retardant properties and mechanical properties, and the lack of attention To wood-plastic composite materials and other issues, achieve good flame retardant and smoke suppression effects, enhance flame retardant or smoke suppression effects, and produce less toxic and harmful gases
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Embodiment 1
[0033] An embodiment of the microcapsule flame retardant of the present invention and its preparation method, wherein the preparation method comprises the following steps:
[0034] (1) After shearing, pulverizing, ball milling and sieving commercially available 60-mesh wood flour to obtain 80-mesh wood flour, get 100g of this 80-mesh wood flour and add it to 400g of 0.1% sodium hydroxide solution by mass fraction, boil Treated for 3 hours, then filtered, washed and dried at 110°C for 8 hours;
[0035] (2) Add the dried wood flour treated with sodium hydroxide solution in step (1) into 120 g of pyrophosphoric acid solution with a mass fraction of 60%, oscillate and soak at a constant temperature for 12 hours, then carry out suction filtration and dry at 105°C 8 hours; then add 8g of emulsified paraffin, grind and mix for 20 minutes, bake at 105°C for 30 minutes, then add 5g of sodium dodecylbenzenesulfonate, oscillate ultrasonically for 2 hours to disperse evenly, and obtain th...
Embodiment 2
[0039] An embodiment of the microcapsule flame retardant of the present invention and its preparation method, wherein the preparation method comprises the following steps:
[0040] (1) After shearing, pulverizing, ball milling and sieving commercially available 60-mesh wood flour to obtain 80-mesh wood flour, get 80g of this 80-mesh wood flour and join 400g mass fraction of 0.1% sodium hydroxide solution, boil Treated for 3 hours, then filtered, washed and dried at 110°C for 5 hours;
[0041] (2) adding the dry wood powder after the sodium hydroxide solution treatment in the step (1) into the composite solution that is formed by 30% phosphoric acid solution and 10g tin chloride by 120g mass fraction, constant temperature oscillation dipping 24 hours, then Carry out suction filtration and dry at 105°C for 8 hours; add 5g of emulsified paraffin, grind and mix for 30 minutes, bake at 105°C for 20 minutes, then add 3g of sodium dodecylbenzenesulfonate, and ultrasonically shake for...
Embodiment 3
[0045] An embodiment of the microcapsule flame retardant of the present invention and its preparation method, wherein the preparation method comprises the following steps:
[0046] (1) After shearing, pulverizing, ball milling and sieving commercially available 60-mesh wood flour to obtain 80-mesh wood flour, get 120g of this 80-mesh wood flour and join 400g mass fraction of 0.1% sodium hydroxide solution, boil Treated for 2 hours, then filtered, washed and dried at 115°C for 5 hours;
[0047] (2) adding the dry wood powder after the sodium hydroxide solution treatment in the step (1) into the hot aqueous solution (50°C~80°C) composed of 30% ammonium polyphosphate and isonicotinic acid by 400g mass fraction, Immerse at constant temperature and shake for 36 hours, then perform suction filtration and dry at 105°C for 8 hours; then add 8g of emulsified paraffin, grind and mix for 30 minutes, bake at 105°C for 30 minutes, then add 5g of sodium dodecylbenzenesulfonate, and ultrason...
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