Halogen-free flame-retardant dicyclopentadiene material and preparation method thereof
A technology of polydicyclopentadiene and dicyclopentadiene, applied in the direction of inorganic pigment treatment, chemical instruments and methods, fibrous fillers, etc., can solve secondary disasters, and flame retardants cannot react with dicyclopentadiene monomer , Halogenated flame retardant use day limit and other issues, to achieve good flame retardant performance, simple and easy preparation method, and improved mechanical properties
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Embodiment 1
[0043] Example 1 Preparation of Modified Aluminum Hydroxide
[0044] Weigh 100 parts of aluminum hydroxide powder (particle size = 11 μm) in a beaker to prepare a suspension in 300 parts of deionized water. Stir the aluminum hydroxide suspension at a stirring speed of 1000rmp and heat to 80°C, add 2 parts of stearic acid, stir for 30min, cool down to room temperature, filter, and dry at 110°C for 10h. The modified aluminum hydroxide is obtained, and the activation index is >99.9%.
Embodiment 2-9
[0046] The test method is the same as in Example 1, and the modification results of different modifiers and different dosages are shown in Table 1.
[0047] The modification effect of different modifiers in table 1 to aluminum hydroxide
[0048]
Embodiment 10
[0050] Under nitrogen protection, 40 parts of dicyclopentadiene monomers, 30 parts of modified aluminum hydroxide obtained in Example 1, 3 parts were uniformly mixed under a high-speed mixer to obtain component A; 60 parts of dicyclopentadiene and 1.5 parts of triethylaluminum were uniformly mixed under a high-speed mixer to obtain component B; under nitrogen protection, group A and B According to the volume ratio of 1:1, it is injection molded by reaction injection molding machine, and the material properties are shown in Table 2.
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