How to distinguish the quality of fiberglass cloth?
Fiberglass cloth is based on fiberglass woven fabric and coated with polymer anti-emulsion immersion. It is widely used in wall reinforcement materials, reinforced cement products, reinforced plastics, and skeleton materials of rubber products. Many friends are using it. Fiberglass cloth, but how to distinguish between good and bad fiberglass cloth? Today, the editor will share with you how to distinguish between good and bad fiberglass cloth.
Method 1: Judge the quality of fiberglass cloth by observing its surface. Glass fiber cloth with better quality has a relatively clean surface, uniform and straight grid lines, good toughness, and relatively uniform mesh openings. The poorer quality fiberglass cloth has uneven grids and poor toughness.
Method 2: Chemical stability is relatively good. Good quality fiberglass cloth has relatively stable chemical properties. It is resistant to alkali, acid, water, cement erosion, and other chemical corrosion. It is relatively safe to use.
Method 3: Judge the quality of fiberglass cloth by its color. The color of better quality fiberglass cloth is glossy and relatively uniform, while the color of poorer quality fiberglass cloth is not only prickly when touched, but also darker in color. turbid.
Method 4: Judge the quality of fiberglass cloth by stretching it. Good fiberglass cloth is not easily deformed and can be restored by stretching. However, if the fiberglass cloth of poor quality is stretched, its deformation will be difficult to restore to its original shape, affecting normal use.
What is fiberglass cloth? What is it made of? When explaining PCB materials, we often encounter this question. Next let us understand these issues.
Glass fiber cloth is made of glass balls or waste glass as raw materials through high-temperature melting, drawing, winding, weaving and other processes. The diameter of its single filament ranges from a few microns to more than 20 microns, which is equivalent to a 1/20-1/5 of the hair strands, each fiber bundle is composed of hundreds or even thousands of single filaments.
Glass fiber is one of the raw materials of PCB materials. Its function is just like a house made of cement and steel bars. The fiberglass cloth acts like steel to the resin.
Glass fiber has many characteristics, as follows:
1. Used between low temperature -196℃ and high temperature 300℃, with weather resistance.
2. Non-adhesive, not easy to adhere to any substance.
3. Resistant to chemical corrosion, able to withstand corrosion from strong acids, strong alkali, aqua regia and various organic solvents.
4. The friction coefficient is low, making it the best choice for oil-free self-lubrication.
5. The light transmittance reaches 6~13%.
6. It has high insulation performance, anti-ultraviolet and anti-static properties.
7. High strength. Has good mechanical properties.
8. Drug resistance
The characteristics of this are most vividly reflected in PCB materials, such as high temperature, ESD and insulation, corrosion resistance, etc. Therefore, the development of PCB materials is also progressing with the development of fiberglass cloth.
