quality Pultruded Tube & Pultruded Rod factory

Checkerboard is a plain fabric of roving, which is an important base material of FRP. The strength of the checkerboard is mainly in the warp and weft direction of the fabric. For occasions requiring high strength in the warp or weft direction, it can also be woven into one-way checkerboard, which can arrange more roving in the warp or weft direction.   Checkerboard is a plain fabric of roving, which is an important base material of FRP. The strength of the checkerboard is mainly in the warp and weft direction of the fabric. For occasions requiring high strength in the warp or weft direction, it can also be woven into one-way checkerboard, which can arrange more roving in the warp or weft direction. The quality requirements of the square grid cloth are as follows: the fabric is uniform, the cloth edge is straight, the cloth surface is flat and mat like, without stains, fluffing, creases, wrinkles, etc.; the warp and weft density, area weight, cloth width and roll length meet the standards; the fabric is wound on a solid paper core, and the winding is neat; the fast and good resin permeability; the dry and wet mechanical strength of the laminated material made of the fabric shall be Meet the requirements. The characteristics of the composite materials are low interlaminar shear strength, low compressive strength and poor fatigue strength.

The glass cloth produced in China can be divided into two categories: alkali free and medium alkali free, and most of them are alkali free in foreign countries. Glass cloth is mainly used in the production of various electrical insulation laminates, printed circuit boards, various vehicle bodies, tanks, boats, molds, etc. Medium alkali glass cloth is mainly used in the production of plastic coated packaging cloth, as well as for corrosion-resistant occasions. The properties of fabric are determined by fiber properties, warp and weft density, yarn structure and weave.   The density of warp and The following is a variety of glass fiber fabrics woven with glass fiber yarn. (1) The glass cloth produced in China can be divided into two categories: alkali free and medium alkali free, and most of them are alkali free in foreign countries. Glass cloth is mainly used in the production of various electrical insulation laminates, printed circuit boards, various vehicle bodies, tanks, boats, molds, etc. Medium alkali glass cloth is mainly used in the production of plastic coated packaging cloth, as well as for corrosion-resistant occasions. The properties of fabric are determined by fiber properties, warp and weft density, yarn structure and weave. The density of warp and weft is determined by yarn structure and weave. The combination of warp and weft density and yarn structure determines the physical properties of the fabric, such as weight, thickness and breaking strength. There are five basic patterns: plain, twill, satin, rib and mat. (2) Glass ribbon glass ribbon is divided into webbed ribbon and non webbed ribbon (burr ribbon). The main anti-corrosion fabric is plain. Glass tape is often used to make electrical equipment parts with high strength and good dielectric properties. (3) Unidirectional fabric unidirectional fabric is a kind of four warp broken satin or long axis satin fabric made of coarse warp and fine weft. It is characterized by high strength in the warp main direction. (4) Compared with the plane fabric, the three-dimensional fabric has developed from one-dimensional and two-dimensional to three-dimensional, which makes the composite with this reinforcement have good integrity and profile, greatly improving the interlaminar shear strength and damage tolerance of the composite. It is developed with the special needs of aerospace, aviation, weapons, ships and other departments. At present, its application has been expanded to automobile, sports equipment, medical equipment and other departments. There are five main types: woven three-dimensional fabric, knitted three-dimensional fabric, orthogonal and non orthogonal three-dimensional nonwoven fabric, three-dimensional woven fabric and other forms of three-dimensional fabric. The shape of the three-dimensional fabric includes block, column, tubular, hollow truncated cone and variable thickness special-shaped section. (5) The shape of the abnormal fabric is very similar to the shape of the products it wants to strengthen. It must be woven on a special loom. Symmetrical shaped fabrics include: round cover, cone, cap, dumbbell shaped fabrics, etc., and can also be made into asymmetric shapes such as box, hull, etc. (6) Trough core fabric trough core fabric is composed of two layers of parallel fabrics, which are connected by longitudinal vertical bars. Its cross section shape can be triangle or rectangle. (7) Glass fiber knitted fabric is also known as knitted felt or woven felt. It is different from ordinary fabric and felt in common sense. The most typical sewing fabric is that a layer of warp and a layer of weft are overlapped, and the warp and weft are woven together to form a fabric through sewing. The advantages of the seam woven fabric are as follows: ① it can increase the ultimate tensile strength, delamination strength and bending strength of the FRP laminated products under tension; ② reduce the weight of the FRP products; ③ make the surface smooth; ④ simplify the hand paste operation and improve the labor productivity. This kind of reinforcement material can replace continuous strand mat in pultrusion FRP and RTM, and can also replace Checkerboard in centrifugal FRP production.

Glass fiber (formerly known as glass fiber or fiberglass) is a kind of inorganic non-metallic material with excellent performance. It has many kinds. Its advantages are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength, but its disadvantages are brittle and poor wear resistance. It is made of glass ball or waste glass by high-temperature melting, drawing, winding.   Glass fiber (formerly known as glass fiber or fiberglass) is a kind of inorganic non-metallic material with excellent performance. It has many kinds. Its advantages are good insulation, strong heat resistance, good corrosion resistance and high mechanical strength, but its disadvantages are brittle and poor wear resistance. It is made of glass ball or waste glass by high-temperature melting, drawing, winding, weaving and other processes. The diameter of its monofilament ranges from several microns to more than 20 microns, which is equivalent to 1 / 20-1 / 5 of a hair filament. Each bundle of fiber precursor consists of hundreds or even thousands of monofilaments. Glass fiber is usually used as reinforcement material, electrical insulation material, thermal insulation material, circuit board and other fields of national economy.