The annual economic losses caused by corrosion in China amount to more than 500 billion yuan, accounting for about 5% of the gross national product (GNP), of which about 1/3 of the loss of marine corrosion. Therefore, people are constantly exploring and researching corrosion-resistant materials. Although there are some shortcomings in FRP (small modulus of elasticity, poor rigidity, poor wear resistance, and low interlaminar shear strength), they can still meet the requirements for use. Therefore, FRP is widely used. In order to give full play to the performance of FRP, a series of modifications have been made to FRP. As these modification technologies continue to mature, FRP will occupy an increasing proportion of shipbuilding materials, and may even replace steel.
From the above situation, the development direction is as follows: (1) Improve the strength and interlaminar shear strength of FRP, and study the addition of a particle (such as nano rare earth) to the glass fiber to chemically react with the matrix. And the glass fiber and the matrix form a three-dimensional network structure.
(2) Improve the wear resistance of FRP, study the addition of certain particles (such as SiC) in the matrix to produce dispersion, to improve the wear resistance of FRP.
(3) For marine FRP, it is hoped that it is a homogenous material. Therefore, we can use TYVEK molding technology and other similar methods to study and manufacture glass fiber products such as glass cloth and glass mat to achieve similarity of FRP products.Back