功能性工程化热塑性塑料增韧环氧树脂的研究..docx

Toughening of Epoxy ResinNetworks with FunctionalizedEngineering Thermoplastics功能性工程化热塑性塑料增韧环氧树脂的研究Epoxy resin thermosets are traditionally toughened by the incorporation of an elastomeric component that phase-separates during cure toform a multiphase network.传统的热固性环氧树脂的增韧是使用弹性体橡胶来进行的，它们在相分离的过程中形成一个多相网状结构。The toughnessenhancement in thesesystems is considerable. 在这些体系中增韧的程度是很明显的。However, in most instances, toughness enhancement is achieved at the expense of stiffness and high-temperatureperformance.然而，在很多实例中，韧性的增加都是以其刚性和高温特性为代价的。 An alternativeapproach to increasing the toughness andimpact strength involves the use of functionalized engineering thermoplastics as toughening agents. 一种新的，提高体系韧性和强度的方法是使用功能性的工程热塑性塑料作为增韧剂。The improvement in toughness is accomplished in this case without significant sacrifice of properties atelevated temperatures. 这种改性方法在提高韧性的同时并不会损害它的高温特性。In this chapter, a brief review of the state ofthe art of thermoplastic-modified epoxy resin networks ispresented.在本文中，对热塑性塑料改性环氧树脂的目前工艺水平进行了一个简要的论述。Emphasis is placed on the types of modifiers, morphological character,and the various mechanisms proposed to be responsible for the toughening behavior.重点放在了改性步骤，形态特征，以及增韧后其机械性能的改变。EPOXYRESIN NETWORKS ARE CURRENTLY USED as coatings, structural adhesives, and advanced composite matrices in many applications involving boththe aerospace and electronics industries.环氧树脂被广泛地应于于涂料，结构胶黏剂以及很多高新领域的复合材料中，如航空航天和电子工业中。 In addition to their outstandingadhesive properties, these highly cross-linked networks possess excellentthermal and dimensional stability as well as high modulus and strength (I, 2).除此之外，它们杰出的粘结性能，高的层间剪切强度使它们在具有高模量和强度的同时也有好的热稳定性(I, 2)。The widespread use of epoxies, however, is limited in many high-performance applications because of their inherent brittleness. 虽然环氧被广泛应用，但它们固有的脆性还是限制了它们在很多需要高性能环境中的应用。Several methodshave been proposed to improve on this attribute of epoxy networks. 已经有几种方法被用来改性环氧树脂的这种脆性。The mostcommon method involves the addition to the sy