E Glass Fiber Roving for Filament Winding Process
China E Glass Fiber Roving for Filament Winding Process, Find details about China Heat Resistant, High Temperature from E Glass Fiber Roving for Filament Winding Process
Basic Info.
Trademark
SELVA
Specification
kg
Origin
China
HS Code
7019190090
Trademark
SELVA
Specification
kg
Origin
China
HS Code
7019190090
Product Desciption
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Fiber winding is an important molding process for the production of FRP containers and tubes. Because this method is easy to realize mechanization and automation, compared with other molding methods, it has good sanitary conditions, low labor intensity, stable product quality and low production cost, so it is widely used. Fiber winding process can be generally divided into dry winding and wet winding, glass tube is generally used in the wet winding. Wet winding is a process in which the glass fibers are bundled and directly wound on the core membrane under a certain tension control.
When winding, we should make the fiber position stable and not skid, and be full of the surface of the core mold evenly and continuously, so that the adjacent fiber neither overlaps nor leaves the seam, which requires the fiber to be arranged according to a certain law, this law is called winding law. The fiber starts from a certain point on the core die, bypasses the core die and returns to this starting point to form a non-repetitive winding pattern on the core die, which is called the standard line. The winding law is determined by the relative motion between the core die and the winding wire head. The correct design of winding line is an important prerequisite to ensure the quality of fiber winding products. The winding style of the pipeline varies with the use of the pipeline. The winding style can be divided into three types: circular winding, longitudinal plane winding and spiral winding.
The raw materials
Resin:
Can be epoxy, unsaturated polyester, vinyl ester, phenolic and other resins.
Fiber:
They can be roving, stitched or non-woven. In the production of pipes and cans, surface felt and chopped raw wire are commonly used as lining materials.
Core material:
Can be used. Although composite products are usually single shells, they are generally not used.
The advantages and disadvantages
With special winding equipment, the fiber impregnated with resin formula material is wound in the core mold 7 with certain shape according to certain rules under the tension of the equipment, and then the product is made after being heated or solidified at room temperature. Its commonly used is epoxy, unsaturated polyester, phenolic resin formula material. Among them, high performance and anticorrosive products with epoxy resin; Phenolic materials for heat-resistant, ablative and high-temperature gas scouring products; Civil products generally use unsaturated polyester.
Fiber commonly used with or without twist glass fiber, high-performance products with carbon fiber, aramide fiber, ultra high molecular weight polyethylene fiber and metal fiber, etc.
For vessels to be subjected to internal pressure, an inner lining should be attached to the inner surface of the product to prevent leakage pressure because of the permeability of the fiber. Commonly used lining materials are aluminum, plastic, rubber and so on.
For winding forming, appropriate winding machine, forming core die and winding process should be selected according to the products. The advantages of winding process are as follows:
1) because of the fiber by tensile molding, the fiber content in the product is high (up to 80%, volume fraction), so the strength and specific strength of the product is high; Through different winding trajectory (such as longitudinal plane, circular plane, spiral line, sinusoidal winding, etc.) and the number of winding layers, the strength of products in different directions can be adjusted to meet the requirements of the work.
2) The inner surface of the product is smooth, and the outer surface can be polished and modified.
3) High production efficiency, can be used for mass production.
Its disadvantages are obvious directivity of mechanical properties and low interlaminar shear strength. In addition, the process parameters such as raw material, reinforcing material and winding method must be matched with each other, otherwise the strength will be greatly affected and the reinforcing effect of fiber can not be fully exerted. Also winding equipment is more complex, strong specificity.
Fiber winding is an important molding process for the production of FRP containers and tubes. Because this method is easy to realize mechanization and automation, compared with other molding methods, it has good sanitary conditions, low labor intensity, stable product quality and low production cost, so it is widely used. Fiber winding process can be generally divided into dry winding and wet winding, glass tube is generally used in the wet winding. Wet winding is a process in which the glass fibers are bundled and directly wound on the core membrane under a certain tension control.
When winding, we should make the fiber position stable and not skid, and be full of the surface of the core mold evenly and continuously, so that the adjacent fiber neither overlaps nor leaves the seam, which requires the fiber to be arranged according to a certain law, this law is called winding law. The fiber starts from a certain point on the core die, bypasses the core die and returns to this starting point to form a non-repetitive winding pattern on the core die, which is called the standard line. The winding law is determined by the relative motion between the core die and the winding wire head. The correct design of winding line is an important prerequisite to ensure the quality of fiber winding products. The winding style of the pipeline varies with the use of the pipeline. The winding style can be divided into three types: circular winding, longitudinal plane winding and spiral winding.
The raw materials
Resin:
Can be epoxy, unsaturated polyester, vinyl ester, phenolic and other resins.
Fiber:
They can be roving, stitched or non-woven. In the production of pipes and cans, surface felt and chopped raw wire are commonly used as lining materials.
Core material:
Can be used. Although composite products are usually single shells, they are generally not used.
The advantages and disadvantages
With special winding equipment, the fiber impregnated with resin formula material is wound in the core mold 7 with certain shape according to certain rules under the tension of the equipment, and then the product is made after being heated or solidified at room temperature. Its commonly used is epoxy, unsaturated polyester, phenolic resin formula material. Among them, high performance and anticorrosive products with epoxy resin; Phenolic materials for heat-resistant, ablative and high-temperature gas scouring products; Civil products generally use unsaturated polyester.
Fiber commonly used with or without twist glass fiber, high-performance products with carbon fiber, aramide fiber, ultra high molecular weight polyethylene fiber and metal fiber, etc.
For vessels to be subjected to internal pressure, an inner lining should be attached to the inner surface of the product to prevent leakage pressure because of the permeability of the fiber. Commonly used lining materials are aluminum, plastic, rubber and so on.
For winding forming, appropriate winding machine, forming core die and winding process should be selected according to the products. The advantages of winding process are as follows:
1) because of the fiber by tensile molding, the fiber content in the product is high (up to 80%, volume fraction), so the strength and specific strength of the product is high; Through different winding trajectory (such as longitudinal plane, circular plane, spiral line, sinusoidal winding, etc.) and the number of winding layers, the strength of products in different directions can be adjusted to meet the requirements of the work.
2) The inner surface of the product is smooth, and the outer surface can be polished and modified.
3) High production efficiency, can be used for mass production.
Its disadvantages are obvious directivity of mechanical properties and low interlaminar shear strength. In addition, the process parameters such as raw material, reinforcing material and winding method must be matched with each other, otherwise the strength will be greatly affected and the reinforcing effect of fiber can not be fully exerted. Also winding equipment is more complex, strong specificity.
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