FRP和GRP之间的差异

FRP vs GRP

In modern engineering, materials play a vital role defining the design, structure, performance, and efficiency of the product. Sometimes, the naturally occurring engineering materials are not able to satisfy the specifications of a product. Therefore, new materials were developed to accommodate a wide variety of engineering requirements by combining two or more materials together. These are known as composite materials.

混凝土、胶合板、气凝胶,碳纤维是reinforced polymers; all are composite materials. This article focuses on a specific class of composite materials, which are known as fibre reinforced polymers. These materials are light weight, strong, and robust.

What is Fibre Reinforced Plastic/Polymer (FRP)?

Fibre reinforced polymers are made of two primary constituents; fibres and a polymer matrix. In FRP, the fibre is embedded in a polymer matrix. This structure gives completely different chemical and physical properties than the properties of the individual materials. In fact, these materials satisfy higher engineering requirements than the ordinary materials. Hence composites are applied in less sophisticated to very sophisticate and demanding manufacturing tasks. Mechanical, civil, biomedical, marine, and the aerospace industries are main users of composite materials.

纤维的主要作用是为材料提供强度和刚度。但是单独的纤维是脆弱的（例如：玻璃）。因此，将纤维包裹在聚合物材料的涂层中。聚合物矩阵将纤维保持在其位置，并将纤维之间的负载转移。它也有助于层间剪切强度。

The fibres used in composite are as follows; E-glass, S-glass, Quartz, Aramid (Kevlar 49), Spectra 1000, Carbon (AS4), Carbon (IM-7), Graphite (P-100), and Boron. Polyesters, Vinyl Esters, Epoxies, Bismaleimides, Polyimides, and Phenolics are the polymers used. Each polymer has different chemical and physical properties; therefore, contribute differently to the composite structure. As a result, the composite properties are also different based on the polymer.

Polyester and vinyl are low cost materials, hence used extensively in commercial applications. Epoxies are used for high performance continuous fibre matrices. It also performs better than vinyl and polyester in high temperature conditions. Bismaleimides and Polyimides are high temperature resin matrices for use in temperature critical engineering applications. Phenolics are high temperature resin systems with a good smoke and fire resistance; therefore, used in aircraft interiors.

什么是玻璃增强塑料（GRP） /玻璃纤维增​​强塑料（GFRP）？

玻璃增强塑料，通常称为玻璃纤维，是一种纤维增强的聚合物，并在复合结构中玻璃纤维。聚合物通常是环氧，聚酯或乙烯基。玻璃纤维材料通常用于高性能休闲飞机和滑翔机，船只，汽车，浴缸，热水浴缸​​，水箱，屋顶产品，管道，覆盖层，铸造，铸造，冲浪板和外门皮肤。

What is the difference between FRP and GRP?

• FRP is a composite material, where high strength fibres are included in a polymer matrix. They are used in many commercial and engineering applications due to their high strength and light weight. FRP is widely used as a substitute for metal and wood. Best example is the use of carbon fibre reinforced polymer (CFRP) instead of aluminum and titanium or high grade steel in aircrafts.

• Fibreglass or GRP is a composite material made out of glass fibres and uses polyester, vinyl, or epoxy as the polymer. It is used to make gliders, boats, and bathtubs. Fibreglass is used mainly for commercial applications. Fibre glass is one type of FRP.