Modified inorganic nano-particle as well as preparation method and use thereof

Abstract

The invention discloses modified inorganic nano particle and a preparation process and the application thereof. The modified inorganic nano particle is prepared through conducting polymerization reaction for inorganic nano particle and polyurethane prepolymer, wherein inorganic nano particle is nano calcium carbonate or nano silica dioxide. The preparation process comprises mixing inorganic nano particle and polyurethane prepolymer to react, wherein the reaction temperature is 75 DEG C to 100 DEG C, and the usage amount of polyurethane prepolymer is 3-20% of the weight of inorganic nano particle, optimally is 5-10%. Polyurethane prepolymer is obtained through reacting long-chain aliphatic alcohol and diisocyanate with mol ratio of 1:1 in 75-100 DEG C. The modified inorganic nano particle which is provided by the invention can be used as the filling of high molecular material, has excellent compatibility and dispersibility with substrate, can significantly increase the mechanical strength, abrasion resistance and heat resistance of substrate, is especially suitable to prepare polyurethane elastomer and the filling of polarity rubber, and has great industrial application prospect.

Description

Modified inorganic nanoparticles and its preparation method and application technical field The invention relates to modified inorganic nanoparticles and their preparation methods and applications, in particular to inorganic nanoparticles modified by polyurethane prepolymers and their preparation methods and applications. Background technique Inorganic particles (such as calcium carbonate and silica) are often used as reinforcing fillers for plastics and rubber to improve product performance and product quality. With the development of nanotechnology, it is possible to make these inorganic fillers reach nanometer size. Due to the small particle size, large specific surface area and high specific surface energy of inorganic nanoparticles, they can effectively absorb energy, thereby achieving the effect of strengthening and toughening polymers. Their performance is significantly improved compared with traditional micron-sized inorganic particles, and can At the same time im...

AI Technical Summary

Problems solved by technology

In the above technologies, there are still inorganic particles, especially the poor compatibility between inorganic nanoparticles and polymer materials, and the shortcomings that inorganic particles cannot be uniformly dispersed in polymer materials, so it is still necessary to modify inorganic nanoparticles

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