Analysis of toughened and enhanced filling masterbatch
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With the rapid development of polymer science and technology, society's requirements for polymer materials are getting higher and higher. Single polymer materials are often difficult to meet this requirement. It is necessary to modify the polymer materials by alloying, blending, and compounding (abc) to maximize the properties of the respective components and to impart a single material. Good quality not available. The research and development of high-performance composite materials has become an important part of contemporary high technology, and an important development trend of polymer materials. It is facing high specific strength, high specific modulus, high toughness, high temperature resistance, corrosion resistance and resistance. Wear and other multi-directional development. Among them, the toughened and enhanced polymer composite materials have become the hotspot of engineering plastics modification research.
However, from the material science point of view, strength and toughness are two particularly important but contradictory mechanical properties of structural materials. The problem of simultaneous reinforcement and toughening of materials has always been one of the important difficulties to be solved in polymer materials science. .
In general, the filling of rigid particles into a polymer matrix can effectively improve the strength, stiffness and dimensional stability of the material, but at the same time easily lead to an increase in brittleness of the polymer. The use of elastomers to toughen thermoplastics, while toughening, but the material stiffness, strength, temperature and other indicators have been greatly reduced. A polymer/elastomer/filler three-phase composite formed by mechanically blending rigid particles and rubber at the same time can balance the rigidity and toughness of the material within a certain range, but cannot simultaneously obtain high-strength and high-performance polymer materials. . Therefore, since the 1980s, a new modification method for toughening polymers with non-elastomeric (rigid particles) has been proposed.