Whiteness microcapsule red phosphorus and production thereof
A technology of microcapsule red phosphorus and red phosphorus, which is applied in the direction of microcapsule preparation, microsphere preparation, etc., can solve the problems of organic pigments affecting the coating uniformity and the scope of use, etc., to achieve improved ignition point and whiteness value, and low cost , the effect of red phosphorus densification
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Embodiment 1
[0017] The whitening microcapsule red phosphorus of the present invention uses red phosphorus as the core material, and has four coating layers on the surface, the first layer is an aluminum hydroxide coating layer, the second layer is a gelatin-formaldehyde coating layer, and the third layer is Nickel carbonate layer, the fourth layer is a coating layer of melamine formaldehyde resin containing titanium dioxide.
[0018] Its operating steps are as follows: (the addition of each component is the weight percentage of red phosphorus)
[0019] 1) Preparation of core material emulsion: 70g of 200 mesh red phosphorus was formulated into 20% (weight) aqueous solution, added gelatin of 0.8% by weight of red phosphorus and 0.1% of JFC by weight of red phosphorus, and emulsified and dispersed for 0.5 hour to obtain core material emulsion.
[0020] 2) Add aluminum sulfate with 80% red phosphorus weight to the emulsion obtained in 1), adjust the pH to 4.0 at 40°C, heat up to 60°C, and co...
Embodiment 2
[0025] The whitening microcapsule red phosphorus of the present invention uses red phosphorus as the core material, and has four coating layers on the surface, the first layer is aluminum hydroxide, magnesium hydroxide and zinc hydroxide coating layer, and the second layer is gelatin-formaldehyde As for the coating layer, the third layer is a copper hydroxide layer, and the fourth layer is a coating layer of melamine acetaldehyde resin containing titanium dioxide.
[0026] Its operating steps are as follows: (the addition of each component is the weight percentage of red phosphorus)
[0027] 1) Preparation of the core material emulsion: 70g of 200 mesh red phosphorus was formulated into a 35% (weight) aqueous solution, adding 1.5% of the red phosphorus weight in gelatin and 0.5% of the red phosphorus weight in JFC, and emulsified and dispersed for 2.0 hours to obtain the core material emulsion.
[0028] 2) Add 15% aluminum sulfate by weight of red phosphorus, 15% magnesium sul...
Embodiment 3
[0033] The whitening microcapsule red phosphorus of the present invention uses red phosphorus as the core material, and has four coating layers on the surface, the first layer is aluminum hydroxide, magnesium hydroxide and zinc hydroxide coating layer, and the second layer is polyvinyl alcohol - Glutaraldehyde coating layer, the third layer is a copper carbonate layer, and the fourth layer is a coating layer of melamine formaldehyde resin containing titanium dioxide.
[0034] Its operating steps are as follows: (the addition of each component is the weight percentage of red phosphorus)
[0035] 1) Preparation of the core material emulsion: 70g of 300 mesh red phosphorus is formulated into a 50% (weight) aqueous solution, adding polyvinyl alcohol of 3.0% of the weight of red phosphorus and 1.0% of JFC of the weight of red phosphorus, and emulsifying and dispersing for 1.0 hour to obtain the core material emulsion .
[0036] 2) Add 5% aluminum sulfate by weight of red phosphoru...
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Abstract
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