| On the hopeful 21st century, the rapid development of information, biotechnology, energy resources, environment, advanced manufacturing technology and national defense have produced the new demand for materials. More and more small size of materials will meet the demand of miniatured, intelligent, highly integrated, densely memorized and super fast transmission element. Aerospace industry, up-to-date military equipment, advanced manufactured technology and so on has required better and better properties. The innovations of new materials and new technology will become the most influentially strategic research field of society development, economic promote and national power enhance in the future 10 years, and nanometer material will become to be one of the most important materials. Nanometer material is the most dynamic and practiced component of nano-technology.Nano-technology is a kind of vigorously growing high technology turned up in late 80s and mainly studies the system composed by substance dimensioned from 1 to 100 nanometer. Only when the dimension of particle is up to nano-scale, appear the uncommon effects such as small dimension effect, surface effect and so on which not appear in common particles. So, this kind of particles has many characteristic properties and become important way to explore and prepare highly performance and multifunctional composite materials. Following the development of nano-technology, nano-scale composite is standing out conspicuously.Nano-scale composite materials usually refer to the kind of materials in which microstructure there is at least one dimension scale of one phase up to nano-scale. Now,composite system composed by inorganic nano-particle and organic polymer is largely being studied and is becoming the most applied potential system. This kind of system has many excellent performances for gathering characters of inorganism, organism and nanometer material. At the same time, its physical properties can be obtained by optimally assembling two phases to produce composite materials for different uses.The diameter of nano-particle is small and its surface energy is high. Atomic valence bond of particle surface is not saturation and surface atoms have extremely physical and chemical activity. So, nano-particle is apt to agglomerate to make difficult to bring its excellent properties to completely play and to modify polymer. Meanwhile, nano-particle is usually hydrophilic and oil-phobic and is strongly polar, so, it is difficult to even disperse into organic media. The applied effect of nanometer material mainly depend on surface molecule design of nano-powder material and its dispersion degree in matrix, i.e., how to disperse nano-particles into polymer matrix on nano-scale level.Thus, at first, it is essential to treat and modify the surface of inorganic nano-particle, which is the difficulty of its applied development. But, in the paper, in-situ polymerization can fairly settle this problem.Calcium carbonate has become one of the most widespreadly applied inorganic filler for its easy obtain, lower price, low toxicity, light pollution, better whiteness, largely filled amount and good processability. In Japan, the industrializational production of nano-scale calcium carbonate had become to be realized in the 40s. Following the development and application of new materials, nano-scale calcium carbonate has much highly applied value.In the paper, the fresh slush pulp of nano-scale calcium carbonate prepared by super-weighing force field method was used, and the dimension of calcium carbonate particle is up to from 20 to 60 nanometer tested by transmission electronmicroscopy (i.e., TEM).On the exist of original particles of nano-scale calcium carbonate, the emulsion polymerization in situ of acrylate monomers has been reached in the present work. So, a novel composite (i.e., nano-composite ACR) with the core-shell structure, in which the nano-particle of calcium carbonate is as the core and the copolymer of acrylate is as the shell, has been prepared. By the te...
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