Flame-retardant magnesium-aluminum hydrotalcite/carboxyl POSS composite material and preparation method thereof
A magnesium-aluminum hydrotalcite and composite material technology is applied in the field of preparation of flame-retardant hydrotalcite/POSS nanocomposite materials, which can solve the problems of poor dispersibility and insufficient thermal stability of hydrotalcite, and achieve good dispersion and improved thermal stability. and smoke suppression, the effect of improving mechanical properties
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[0024] A preparation method of a flame-retardant magnesium aluminum hydrotalcite / carboxyl POSS composite material, comprising the following specific steps: the following amounts are parts by mass:
[0025] Step 1: Step 1: First weigh 4-10 parts of Mg(NO 3 ) 2 ·6H 2 O, 2-5 parts Al(NO 3 ) 3 9H 2 O is dissolved in 20-50 parts of deionized water, and the resulting Mg containing hydrotalcite laminates 2+ 、Al 3+ The nitrate mixed solution is recorded as A.
[0026] Step 2: First, add 0.32 parts of sodium dodecyl sulfate SDS and 40 parts of distilled water into a 150 mL three-necked flask equipped with a stirrer and a condensing device, raise the water bath to 60 °C, and then add 0.13 parts of vinyl POSS (POSS- Vi), stirred and reacted for 1.5h, then added 13.15 parts of methacrylic acid (MAA) and initiator aqueous solution (1.92 parts of ammonium persulfate APS, 0.48 parts of sodium bisulfite RH were dissolved in 10 parts by mass of distilled water respectively in 3 batches)...
Embodiment 1
[0032] Step 1: First weigh 4.6 parts of Mg(NO 3 ) 2 ·6H 2 O, 2.3 parts Al(NO 3 ) 3 9H 2 O was dissolved in 24 parts of deionized water, and the resulting Mg containing hydrotalcite laminates 2+ 、Al 3+ The nitrate mixed solution is recorded as A.
[0033] Step 2: First, add 0.32 parts of sodium dodecyl sulfate SDS and 40 parts of distilled water into a 150 mL three-necked flask equipped with a stirrer and a condensing device, and raise the water bath to 60 ° C, then add 0.13 parts of vinyl POSS (POSS- Vi), stirred and reacted for 1.5h, then added 13.15 parts of methacrylic acid MAA and initiator aqueous solution in 3 batches (1.92 parts of ammonium persulfate APS, 0.48 parts of sodium bisulfite RH were dissolved in 10 parts by mass of distilled water respectively), After constant temperature reaction for 3.5 h, it was naturally cooled to room temperature to obtain carboxyl POSS composites. Weigh 3.02 parts of synthesized carboxyl POSS and dissolve in 24 parts of deioniz...
Embodiment 2
[0036] Step 1: First weigh 5.6 parts of Mg(NO 3 ) 2 ·6H 2 O, 2.6 parts Al(NO 3 ) 3 9H 2 O was dissolved in 28 parts of deionized water, and the resulting Mg containing hydrotalcite laminates 2+ 、Al 3+ The nitrate mixed solution is recorded as A.
[0037]Step 2: First, add 0.32 parts of sodium dodecyl sulfate SDS and 40 parts of distilled water into a 150 mL three-necked flask equipped with a stirrer and a condensing device, and raise the water bath to 60 ° C, then add 0.13 parts of vinyl POSS (POSS- Vi), stirred and reacted for 1.5h, then added 13.15 parts of methacrylic acid MAA and initiator aqueous solution in 3 batches (1.92 parts of ammonium persulfate APS, 0.48 parts of sodium bisulfite RH were dissolved in 10 parts by mass of distilled water respectively), After constant temperature reaction for 3.5 h, it was naturally cooled to room temperature to obtain carboxyl POSS composites. Weigh 3.41 parts of synthetic carboxyl POSS and dissolve in 28 parts of deionized ...
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