Research Summary: Use of Wood-Based Particles in Thermoplastic Composites

For the use of wood-based particles and fibers as a filler or reinforcement for thermoplastic composites it is necessary to consider the structural and chemical properties of the wood [1]. English and Falk outlines the factors that affect the performance of wood-plastic composites [2]. Several studies have shown that fiber-polymer compatibility can be improved by selecting an appropriate coupling agent [3, 4], compatibility of polar wood fiber with non-polar thermoplastic Is still expanding. Key to the functional limit of the resulting composite material [5].

This article outlines the traditional methods for repairing polymer material damage over the past decade. Table 1 summarizes some of the developments and achievements. It can be seen that both thermoplastic and thermosetting materials have been studied for self-repair, and recent research interest has shifted to systems based on thermosettable composites. First, I will explain how to evaluate the efficiency of self-healing. Here are some examples of various methods for hardening the thermoplastic resin system briefly. Next, we emphasize the preparation and characterization of the self-healing of the thermosetting system. Self-healing coating of metal structure system will be briefly introduced and conclusions can be drawn from the future research prospect.

There are two kinds of polymers used for resins, thermosetting resins and thermoplastic resins. The thermosetting polymers used in the construction industry are polyester and epoxy. Polyolefins, polyamides, vinyl polymers, polyacetals, polysulfones, polycarbonates, polyphenylene, and polyimide, etc., many thermoplastic resins are used in the production of composite materials. As the fiber, various amorphous materials and crystalline materials can be used. In the construction industry, the most commonly used fibers are glass fibers (four kinds of glass fibers: E-glass, AR-glass, A-glass and high-strength glass). There are three types of carbon fibers (Type I, Type II, Type III), which are used to increase the rigidity of the structural members or the area within the structure so that only glass fibers are used with stiffness beyond the possible values It can be used as a mixture with glass fibers. . Instead of glass fiber, aramid fiber can be used to increase the hardness of the composite material.