High-barrier flame retardant pearl mother/polyvinylidene chloride emulsion and preparation method thereof

[0021] The present invention also provides a method for preparing the above-mentioned high-barrier flame-retardant mother-of-pearl / polyvinylidene chloride emulsion, which includes the following steps:

[0022] S1. The mother-of-pearl is ball milled and dried, and then put into deionized water for ultrasonic dispersion to prepare a mother-of-pearl dispersion;

[0023] S2. The mother-of-pearl dispersion, initiator, pH regulator, and buffer are sequentially added to the reaction kettle and beaten for 15 minutes until the mixture is uniform, and then the reaction kettle is sealed and vacuumed;

[0024] S3. Weigh the monomers vinylidene chloride (VDC), methyl acrylate (MA), methyl methacrylate (MMA), acryl cyanide (AN), and acrylic acid (AA) in the feeder according to the measurement, and then use the reactor The monomer is sucked into the reactor with a vacuum degree of, and then nitrogen is filled into the reactor until the pressure in the reactor is normal;

[0025] S4. Turn on the react

[0029] Example 1

[0030] S1. Ball mill 5g of mother-of-pearl for 24h, dry, and put into 10g of deionized water for ultrasonic dispersion to prepare mother-of-pearl dispersion;

[0031] S2. Add the obtained mother-of-pearl dispersion, 1g potassium persulfate, 3g hydrochloric acid, 3g sodium bicarbonate, and 1g sodium lauryl sulfate into the reaction kettle in turn, beaten for 15 minutes until they are uniformly mixed, then seal the reaction kettle and evacuate ;

[0032] S3. Weigh 70g of vinylidene chloride, 3g of methyl acrylate, 3g of methyl methacrylate, 3g of acrylonitrile, and 3g of acrylic acid into the feeder, and then suck the monomer placed in the feeder by the vacuum of the reactor In the reactor, then fill the reactor with nitrogen until the pressure in the reactor is normal;

[0033] S4. Turn on the reactor and stir, stir at room temperature for 10 minutes, heat up to 60°C, and then keep it warm for 4 hours;

[0034] S5. Cool the material to obtain a high-barrier flame-retard

[0035] Example 2

[0036] S1. Ball mill 5g of mother-of-pearl for 24h, dry, and put into 10g of deionized water for ultrasonic dispersion to prepare mother-of-pearl dispersion;

[0037] S2. Add the obtained mother-of-pearl dispersion, 3g sodium persulfate, 3g hydrochloric acid, 3g sodium bicarbonate, and 1g sodium lauryl sulfate into the reaction kettle in turn, beat for 15 minutes until they are uniformly mixed, then seal the reaction kettle and evacuate ;

[0038] S3. Weigh 70g of vinylidene chloride, 3g of methyl acrylate, 3g of methyl methacrylate, 3g of acrylonitrile, and 3g of acrylic acid into the feeder, and then suck the monomer placed in the feeder by the vacuum of the reactor In the reactor, then fill the reactor with nitrogen until the pressure in the reactor is normal;

[0039] S4. Turn on the reactor and stir, stir at room temperature for 10 minutes, heat up to 80°C, and then keep it warm for 6 hours;

[0040] S5. Cool the material to obtain a high-barrier flame-retardant m