FAQ

When using composite materials, there are some issues to be noted such as material selection, process control, and environmental control. For example, when using glass fiber reinforced plastic, attention should be paid to waterproofing and fire-fighting.

When using composite materials, there are some issues to be noted such as material selection, process control, and environmental control. For example, when using glass fiber reinforced plastic, attention should be paid to waterproofing and fire-fighting.

The preparation methods of composite materials mainly include physical blending, chemical reaction, and hot-pressing molding methods. Among them, physical blending is used to mix two or more materials and then heat-treat them, chemical reaction is used to join two or more materials through chemical reactions, and hot-pressing molding is used to heat-treat two or more materials and press them into a shape.

Compared to traditional materials, composite materials have the following advantages: lighter weight, higher strength, and better corrosion resistance. For example, carbon fiber reinforced plastic is only one-fourth the weight of steel but four times as strong.

China's fixed-asset investment (FAI) has picked up pace for a third straight month, official data showed, an encouraging sign amid increasing downward pressures on the wider economy. The FAI climbed 5.9 percent year-on-year in the first 11 months of 2018, quickening from the 5.7-percent growth in Jan-Oct, the National Bureau of Statistics (NBS) said Friday in an online statement.