Preparation method of aluminum hydroxide/zinc stannate microcapsule flame retardant and product of preparation method

Abstract

The invention relates to a preparation method of an aluminum hydroxide / zinc stannate microcapsule flame retardant. The preparation method comprises the following steps: 1) preparing aluminum sulfate into a 5-30 wt% aluminum sulfate solution; 2) adding zinc stannate and a dispersing agent into the aluminum sulfate solution, and dispersing by stirring to obtain a mixed solution; 3) regulating the pH value of the mixed solution to 5-9, and stirring to react; and cooling, filtering, washing, and drying to obtain the aluminum hydroxide / zinc stannate microcapsule flame retardant. The invention also relates to an aluminum hydroxide / zinc stannate microcapsule flame retardant prepared by the preparation method. The aluminum hydroxide / zinc stannate microcapsule flame retardant has the advantages of high flame-retardant efficiency, favorable smoke inhibition property, simple technique and low production equipment investment, can easily implement industrialized production, and can solve the problems in the prior art.

Description

technical field [0001] The invention relates to the field of preparation of flame retardants, in particular to a preparation method and product of aluminum hydroxide / zinc stannate microcapsule flame retardants. Background technique [0002] With the development of material science, polymer materials are used more and more widely, but because of their flammability, fires caused by them are becoming more and more frequent. Now it is mainly modified by adding flame retardants to improve its flame retardant performance, but flame retardants such as halogen series and antimony trioxide will release toxic gases when burned, such as PVC materials release a lot of toxic black smoke during combustion , Bringing a huge threat to people's lives and properties, so all countries are developing new technologies to reduce the amount of smoke generated during fires and reduce or eliminate fires. [0003] Inorganic additive flame retardants such as aluminum hydroxide, magnesium hydroxide, a...

AI Technical Summary

Problems solved by technology

Now it is mainly modified by adding flame retardants to improve its flame retardant performance, but flame retardants such as halogen series and antimony trioxide will release toxic gases when burned, such as PVC materials release a lot of toxic black smoke during combustion , which poses a huge threat to people's lives and properties, so all countries are developing new technologies to reduce the amount of smoke generated during fires and reduce or eliminate fires.

[0003] Inorganic additive flame retardants such as aluminum hydroxide, magnesium hydroxide, and antimony trioxide are widely used. For example, Chinese invention patent (CN 102993598 A) discloses the preparation of a flame-retardant polyvinyl chloride cable material formula, which uses inorganic The flame retardants are magnesium hydroxide, aluminum hydroxide, antimony trioxide and pentaerythritol, an intumescent flame retardant. This product has excellent flame retardant and insulating properties, but its smoke elimination efficiency is low. Better fuel efficiency, but more smoke

In order to reduce the amount of smoke, researchers use smoke suppressants to replace flame retardants with large smoke amounts and add them to polymer materials. Its preparation method, the technical patent uses inorganic flame retardant zinc borate, magnesium hydroxide, aluminum hydroxide compound flame retardant polyvinyl chloride, in order to reduce the problem of large amount of smoke due to antimony, and can also reduce pollution and improve environmental protection , safety performance, but the flame retardant efficiency of this inorganic composite flame retardant is low. When it is necessary to meet the requirements of flame retardant materials, its addition amount is large, resulting in a significant reduction in the mechanical properties of the material

[0004] In order to meet the high-efficiency flame retardant and smoke suppression performance at the same time, researchers have prepared flame retardant and smoke suppression synergists, which are mostly multi-element synergistic flame retardant compounds such as silicon, nitrogen, phosphorus, and halogen, such as the publication number CN 104744504 ​​A Chinese patent literature discloses a method for preparing a silicon, nitrogen, and halogen multi-element synergistic flame retardant compound, using triglycidyl isocyanurate, dimethyldihalosilane, and dihalopropanol to synthesize isocyanide in an organic solvent Uric acid tris(dimethyldihalopropoxysilyloxyhalopropyl) ester, this kind of flame retardant has high flame retardant efficiency and good smoke suppression effect, and is suitable for polyvinyl chloride, polyurethane, epoxy resin, Flame retardant plasticizers such as unsaturated resins, but due to the complicated operation and the use of organic solvents, the waste liquid is toxic, the plasticizing efficiency is low, and the plasticizers are precipitated to varying degrees during the use of materials. The durability of flame retardants poor

[0005] At present, flame retardants and smoke suppressants have been widely used. However, due to the large amount of smoke suppressants added, the production cost is high, the durability is poor, and the mechanical properties of materials are easily reduced, which limits the application of materials.

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