What is fiberglass paper?
Fiberglass paper is an industrial paper commonly used as a filter material, sound-absorbing material, heat insulation material, and electrical insulation material. It is a paper sheet made from fine glass fibers and features high flame retardancy, strong chemical resistance, and good dimensional stability.
It is a thin paper made from fine glass fibers. It has good dimensional stability, strong chemical resistance, strong weather resistance, and good non-flammability. It can be made from 100% glass fibers (diameter below 0.3~0.5μm, mainly composed of silica), lightly beaten, with the addition of adhesives, or a portion of chemical wood pulp, on a fourdrinier or cylinder paper machine. Silica gel or colloidal bauxite can also be added to improve strength. This type of paper is used in thermal insulation materials, electrical insulation materials, and as a reinforcing material for synthetic resin products.
The manufacturing process of this paper differs somewhat from ordinary papermaking. It uses 100% glass fiber (glass fiber paper is composed of silica, with a diameter of less than 0.3-0.5 μm), lightly beaten, and then mixed with adhesives, or with some chemical wood pulp. It is then formed on a fourdrinier or cylinder paper machine. Silica gel or colloidal alumina can also be added to improve the strength of the finished paper.
The production process of glass fiber paper (or glass fiber air filter paper) is relatively simpler than the general papermaking process. This is because glass fiber does not require beating, only dispersion. Furthermore, pressing is not required during papermaking, reducing the number of steps and saving energy.
The process flow is as follows: Glass fiber → Dispersion → Slurry storage tank → Slurry pump → Pre-slurry tank → Slurry conditioning tank → Settling pan → Slurry flushing tank → Slurry pump → Slurry stabilizing tank → Headbox → Wire section → Drying oven → Winding → Slitting and packaging
Glass fiber is commonly used as a reinforcing material in composite materials, as well as in electrical insulation materials, thermal insulation materials, and circuit boards, among other applications in various sectors of the national economy. When used as a reinforcing material for reinforced plastics, glass fiber is characterized by its high tensile strength. So, what is glass fiber made of? What are its characteristics?
Glass fiber is commonly used as a reinforcing material in composite materials, as well as in electrical insulation materials, thermal insulation materials, and circuit boards, among other applications in various sectors of the national economy. When used as a reinforcing material for reinforced plastics, glass fiber is characterized by its high tensile strength. So, what is glass fiber made of? What are its characteristics?
What is glass fiber made of?
Glass fiber can be classified by shape and length into continuous fiber, fixed-length fiber, and glass wool; and by glass composition into alkali-free, chemical-resistant, high-alkali, medium-alkali, high-strength, high-elastic modulus, and alkali-resistant (alkali-resistant) glass fibers, etc.
The main raw materials for producing glass fiber are: quartz sand, alumina and pyrophyllite, limestone, dolomite, boric acid, soda ash, mirabilite, fluorite, etc. Production methods are broadly divided into two categories: one is to directly produce fibers from molten glass; the other is to first form molten glass into glass spheres or rods with a diameter of 20mm, and then remelt them through various methods to produce very fine fibers with a diameter of 3-80μm. Infinitely long fibers drawn mechanically from platinum alloy plates are called continuous glass fibers, commonly known as long fibers. Non-continuous fibers produced by rollers or airflow are called fixed-length glass fibers, commonly known as short fibers.
Glass fiber is classified into different grades according to its composition, properties, and uses. According to standard specifications, Grade E glass fiber is widely used in electrical insulation materials; Grade S is a special fiber. The glass used to produce glass fiber differs from the glass used in other glass products.
What are the characteristics of glass fiber?
1. Good electrical insulation properties and high temperature resistance.
2. High tensile strength, good heat resistance, and corrosion resistance.
3. Non-flammable and with excellent chemical stability.
Glass fiber yarn is a high-performance inorganic non-metallic material with many varieties. Its advantages include good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. However, its disadvantages include brittleness and poor abrasion resistance. Glass fiber yarn is made from glass spheres or waste glass through high-temperature melting, drawing, winding, and weaving processes. The diameter of its single filaments ranges from a few micrometers to over twenty micrometers, equivalent to approximately 1/20 to 1/5 the diameter of a human hair. Each bundle of fiber consists of hundreds or even thousands of single filaments.
Fiberglass yarn is mainly used as an electrical insulation material, industrial filter material, anti-corrosion, moisture-proof, heat insulation, sound insulation, and shock absorption material. It can also be used as a reinforcing material. The use of fiberglass yarn is far more extensive than that of other types of fibers. It is used to manufacture products such as reinforced plastics, reinforced rubber, reinforced gypsum, and reinforced cement. Coating fiberglass yarn with organic materials can improve its flexibility and make it into packaging cloth, window screens, wall coverings, covering cloths, protective clothing, and electrical insulation and sound insulation materials.
