A kind of aromatic Schiff base hyperbranched polysiloxane coating modified ammonium polyphosphate
A modification technology of ammonium polyphosphate and siloxane, which is applied in the field of modified ammonium polyphosphate, can solve the problems of easy hydrolysis of ammonium polyphosphate, complex technical process of modified ammonium polyphosphate, and difficult industrialization, etc., and achieve excellent flame retardant performance Effect
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Embodiment 1
[0045] This embodiment provides an aromatic Schiff base hyperbranched polysiloxane-coated modified ammonium polyphosphate I (SP@APP-I) and a preparation method thereof. The specific experimental route is as follows figure 2 shown, the specific steps are as follows:
[0046] Step 1: Preparation of Siloxane-Modified Ammonium Polyphosphate I (Si-APP-I)
[0047] In terms of molar weight parts, 10 parts of APP, 10 parts of aminopropyltriethoxysilane and 80 parts of absolute ethanol were added to the three-necked flask, and the mixed solution was fully stirred under nitrogen conditions. After homogeneous, the temperature of the mixed solution was raised to 90°C, and the mixture was condensed and refluxed for 5h under this condition. Then, after repeated washing, filtration and drying with absolute ethanol, Si-APP-I was obtained.
[0048] Step 2: Aromatic Schiff Base Hyperbranched Polysiloxane Coating Modified Ammonium Polyphosphate I (SP@APP-I)
[0049] In molar weight parts, 10...
Embodiment 2
[0052] This embodiment provides an aromatic Schiff base hyperbranched polysiloxane-coated modified ammonium polyphosphate II (SP@APP-II) and a preparation method thereof. The specific experimental route is as follows image 3 shown, the specific steps are as follows:
[0053] Step 1: Preparation of Siloxane-Modified Ammonium Polyphosphate II (Si-APP-II)
[0054] In terms of molar parts by weight, 15 parts of APP, 15 parts of aminopropyltrimethoxysilane and 70 parts of absolute ethanol were added to the three-necked flask, and the mixed solution was fully stirred under nitrogen conditions until the mixture was uniform. After that, the temperature of the mixed solution was raised to 70 °C, and the mixture was condensed and refluxed for 6 h under this condition. Then, after repeated washing, filtration and drying with absolute ethanol, Si-APP-II was obtained.
[0055] Step 2: Aromatic Schiff Base Hyperbranched Polysiloxane Coating Modified Ammonium Polyphosphate II (SP@APP-II) ...
Embodiment 3
[0059] This embodiment provides an aromatic Schiff base hyperbranched polysiloxane-coated modified ammonium polyphosphate III (SP@APP-III) and a preparation method thereof. The specific experimental route is as follows Figure 4 shown, the specific steps are as follows:
[0060] Step 1: Preparation of Siloxane-Modified Ammonium Polyphosphate III (Si-APP-III)
[0061] In terms of molar parts by weight, 17 parts of APP, 17 parts of γ-aminoethylaminopropyltrimethoxysilane and 66 parts of absolute ethanol were added to the three-necked flask, and the mixed solution was fully carried out under nitrogen conditions. Stir, and after the mixture is uniform, the temperature of the mixed solution is raised to 80°C, and the mixture is condensed and refluxed for 5h under this condition. Then, after repeated washing, filtration and drying with absolute ethanol, Si-APP-III was obtained.
[0062] Step 2: Aromatic Schiff Base Hyperbranched Polysiloxane Coating Modified Ammonium Polyphosphate...
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Abstract
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