Glass fiber (formerly known in English as glass fiber or fiberglass) is an inorganic non-metallic material with excellent performance. It has a wide variety. Its advantages are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength, but its disadvantages are brittle and poor wear resistance. Glass fiber is usually used as reinforcing material in composites, electrical insulation material and thermal insulation material, circuit substrate and other fields of national economy.
In 2021, the production capacity of glass balls for wire drawing of various crucibles in China was 992000 tons, with a year-on-year increase of 3.2%, which was significantly slower than that of last year. Under the background of "double carbon" development strategy, glass ball kiln enterprises are facing more and more shutdown pressure in terms of energy supply and raw material cost.
What is fiberglass yarn?
Glass fiber yarn is a kind of inorganic non-metallic material with excellent performance. There are many kinds of glass fiber yarn. The advantages of glass fiber yarn are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength, but the disadvantages are brittle and poor wear resistance. Glass fiber yarn is made of glass ball or waste glass through high-temperature melting, wire drawing, winding, weaving and other processes, The diameter of its monofilament is several microns to more than 20 meters, which is equivalent to 1 / 20-1 / 5 of a hair. Each bundle of fiber precursor is composed of hundreds or even thousands of monofilaments.
What is the main purpose of glass fiber yarn?
Glass fiber yarn is mainly used as electrical insulation materials, industrial filter materials, anti-corrosion, moisture-proof, heat insulation, sound insulation and shock absorption materials, and also as reinforcement materials. Glass fiber yarn is widely used than other kinds of fibers to manufacture reinforced plastics, glass fiber yarn or reinforced rubber, reinforced gypsum and reinforced cement, Glass fiber yarn is coated with organic materials. Glass fiber can improve its flexibility and can be used to make packaging cloth, window screen, wall cloth, covering cloth, protective clothing, electricity insulation and sound insulation materials.
What are the classifications of glass fiber yarn?
Twistless roving, twistless roving fabric (checkered cloth), glass fiber felt, chopped precursor and ground fiber, glass fiber fabric, combined glass fiber reinforcement, glass fiber wet felt.
What does glass fiber ribbon yarn mean by usually 60 yarns per 100cm?
This is the product specification data, which means that there is 60 yarn in 100 cm.
How to size glass fiber yarn?
For glass yarn made of glass fiber, single yarn generally needs sizing, and filament double strand yarn can not be sizing. Glass fiber fabrics are in small batches. Therefore, most of them are sizing with dry sizing or slitting sizing machine, and few are sizing with shaft warp sizing machine. Sizing with starch size, starch as a cluster agent, as long as a small sizing rate (about 3%) can be used. If you use a shaft sizing machine, you can use some PVA or acrylic size.
What are the terms of glass fiber yarn?
The acid resistance, electricity resistance and mechanical properties of alkali free glass fiber are better than those of medium alkali.
"Branch" is a unit indicating the specification of glass fiber. It is specifically defined as the length of 1G glass fiber. 360 branches means that 1g glass fiber has 360 meters.
Specification and model description, for example: EC5 5-12x1x2S110 is ply yarn.
|
Letter |
Meaning |
|
E |
E Glass，Alkali free glass refers to the aluminum borosilicate component with an alkali metal oxide content of less than 1% |
|
C |
Continuous |
|
5.5 |
Diameter of filament is 5.5 micron meter |
|
12 |
Linear density of yarn in TEX |
|
1 |
Direct roving, Number of multi-end, 1 is single end |
|
2 |
Assemble roving, Number of multi-end, 1 is single end |
|
S |
Twist type |
|
110 |
Twist degree(twists per meter) |
What is the difference between medium alkali glass fiber, non alkali glass fiber and high alkali glass fiber?
A simple way to distinguish medium alkali glass fiber, non alkali glass fiber and high alkali glass fiber is to pull a single fiber yarn by hand. Generally, non alkali glass fiber has high mechanical strength and is not easy to break, followed by medium alkali glass fiber, while high alkali glass fiber breaks when pulled gently. According to the naked eye observation, the alkali free and medium alkali glass fiber yarn generally has no wool yarn phenomenon, while the wool yarn phenomenon of high alkali glass fiber yarn is particularly serious, and many broken monofilaments prick out the yarn branches.
How to identify the quality of glass fiber yarn?
Glass fiber is made of glass by various molding methods in molten state. It is generally divided into continuous glass fiber and discontinuous glass fiber. Continuous glass fiber is more popular in the market. There are mainly two kinds of continuous glass fiber products produced according to the current standards in China. One is medium alkali glass fiber, code named C; One is alkali free glass fiber, code named E. The main difference between them is the content of alkali metal oxides. (12 ± 0.5)% for medium alkali glass fiber and < 0.5% for non alkali glass fiber. There is also a non-standard product of glass fiber on the market. Commonly known as high alkali glass fiber. The content of alkali metal oxides is more than 14%. The raw materials for production are broken flat glass or glass bottles. This kind of glass fiber has poor water resistance, low mechanical strength and low electrical insulation. It is not allowed to produce products according to national regulations.
Generally qualified medium alkali and non alkali glass fiber yarn products must be tightly wound on the yarn tube. Each yarn tube is marked with number, strand number and grade, and the product inspection certificate shall be provided in the packing box. The product inspection certificate includes:
1. Name of manufacturer;
2. Code and grade of products;
3. Number of this standard;
4. Stamp the special seal for quality inspection;
5. Net weight;
6. The packing box shall have the factory name, product code and grade, standard number, net weight, production date and batch number, etc.
How to reuse glass fiber waste silk and yarn?
After broken, waste glass can generally be used as raw material for glass products. The problem of foreign matter / wetting agent residue needs to be solved. Waste yarn can be used as general glass fiber products, such as felt, FRP, tile, etc.
How to avoid occupational diseases after long-term contact with glass fiber yarn?
Production operations must wear professional masks, gloves and sleeves to avoid direct skin contact with glass fiber yarn.
Post time: Mar-15-2022