A kind of polystyrene modified asphalt and preparation method thereof
A technology of polystyrene and modified asphalt, which is applied in building components, building insulation materials, construction, etc., and can solve the problems of poor storage stability, unfavorable application of modified asphalt, and poor compatibility between polystyrene and asphalt and other problems, to achieve the effect of improving poor compatibility, preventing serious aging of asphalt, and good storage stability
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Embodiment 1
[0014] Take 2 parts by mass of triethoxychlorosilane and 8 parts by mass of ethyl orthosilicate, dissolve them in 170 parts by mass of acetone, add 5 parts by mass of hydrochloric acid (1mol / L) (disperse 5 parts by mass of hydrochloric acid uniformly in 30 parts by mass) After adding acetone), co-hydrolyze at 40°C for 1 hour, precipitate with absolute ethanol, filter, and dry to obtain sample 1. Connect the clean polymerization bottle to the vacuum-argon system, vacuum, bake at high temperature, and charge Treat with argon, repeat 3 times and then cool for later use. Add 1000 parts by mass of styrene monomer and dissolve in 5000 parts by mass of cyclohexane. After heating in a water bath at 50°C for half an hour, add 1 part by mass of n-butyl lithium and react at 50°C. After two hours, the polystyrene active body was obtained, and sample 1 was added to make the polystyrene active body end-capped, precipitated with absolute ethanol, filtered, and dried to obtain a polystyrene-sil...
Embodiment 2
[0016] Take 5 parts by mass of triethoxychlorosilane and 50 parts by mass of ethyl orthosilicate, dissolve them in 1040 parts by mass of acetone, add 10 parts by mass of hydrochloric acid (1mol / L) (distribute 10 parts by mass of hydrochloric acid uniformly in 60 parts by mass) After adding acetone), co-hydrolyzed at 40°C for 1 hour, precipitated with absolute ethanol, filtered, and dried to obtain sample 1. Take 1000 parts by mass of styrene monomer and dissolve it in 5000 parts by mass of cyclohexane. Under protection, after heating in a water bath at 50°C for half an hour, add 1.5 parts by mass of n-butyllithium and react at 50°C for two hours to obtain a polystyrene active body. Add sample 1 to make the polystyrene active body end-capping, and pass it to absolute ethanol. Precipitate, filter, and dry to obtain polystyrene-silica hybrid material. Take 15g of polystyrene-silica hybrid material and add it to 90g of toluene, and ultrasonically disperse it at 25°C for 25min to ob...
Embodiment 3
[0018] Take 8 parts by mass of triethoxychlorosilane and 40 parts by mass of ethyl orthosilicate, dissolve them in 840 parts by mass of acetone, add 20 parts by mass of hydrochloric acid (1mol / L) (distribute 20 parts by mass of hydrochloric acid uniformly in 120 parts by mass) After adding acetone), co-hydrolyzed at 40°C for 1 hour, precipitated with absolute ethanol, filtered, and dried to obtain sample 1. Take 1000 parts by mass of styrene monomer and dissolve it in 5000 parts by mass of cyclohexane. Under protection, after heating in a water bath at 50°C for half an hour, add 2 parts by mass of n-butyl lithium and react at 50°C for two hours to obtain a polystyrene active body. Add sample 1 to make the polystyrene active body end-capped. Ethanol precipitation, filtration, and drying to obtain polystyrene-silica hybrid material. Take 15g of polystyrene-silica hybrid material into 90g of xylene and disperse it ultrasonically at 25°C for 20min to obtain sample I; heat 500g of b...
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