What is glass yarn?

(1) glass yarn The glass yarn produced in my country is divided into two categories: alkali-free and medium-alkali. Most foreign countries are alkali-free glass yarn. glass yarn is mainly used to produce various electrical insulation laminates, printed circuit boards, various vehicle bodies, storage tanks, boats, molds, etc. Medium-alkali glass yarn is mainly used in the production of plastic-coated packaging cloth and in corrosion-resistant occasions. The characteristics of the fabric are determined by fiber properties, warp and weft density, yarn structure and weave pattern. The warp and weft density is determined by the yarn structure and weave pattern. The warp and weft density plus the yarn structure determine the physical properties of the fabric, such as weight, thickness and breaking strength. There are five basic weaves: plain, twill, satin, rib and mat.

(2) Glass ribbon Glass ribbon is divided into woven edge tape and non-woven edge tape (raw edge tape), which mainly refers to the anti-corrosion plain weave. Glass ribbons are often used to manufacture electrical equipment components with high strength and good dielectric properties.
(3) Unidirectional fabric Unidirectional fabric is a four-warp torn satin or long-axis satin fabric woven with thick warp yarns and fine weft yarns. It is characterized by high strength in the main direction of the warp.
(4) Three-dimensional fabrics Compared with flat fabrics, three-dimensional fabrics have structural characteristics that have developed from one-dimensional and two-dimensional to three-dimensional, so that composite materials using them as reinforcements have good integrity and conformability, which greatly improves the efficiency of composite materials. Interlaminar shear strength and damage tolerance of materials. It was developed with the special needs of aerospace, aviation, weapons, shipbuilding and other sectors. Currently, its application has been extended to automobiles, sports equipment, medical equipment and other sectors. There are five main categories: woven three-dimensional fabrics, knitted three-dimensional fabrics, orthogonal and non-orthogonal non-woven three-dimensional fabrics, three-dimensional woven fabrics and other forms of three-dimensional fabrics. The shapes of three-dimensional fabrics include block, column, tube, hollow truncated cone, and variable-thickness special-shaped sections.
(5) Special-shaped fabric The shape of special-shaped fabric is very similar to the shape of the product it is to strengthen, and must be woven on a special loom. Symmetrically shaped special-shaped fabrics include: round covers, cones, caps, dumbbell-shaped fabrics, etc. They can also be made into asymmetric shapes such as boxes and ship hulls.
(6) Grooved core fabric Grooved core fabric is a fabric composed of two parallel layers of fabric connected by longitudinal vertical strips. Its cross-sectional shape can be triangular or rectangular.
(7) Glass Fiber stitched fabric is also called knitted mat or woven mat. It is different from ordinary fabrics and mats in the usual sense. The most typical stitch-bonded fabric is a layer of warp yarns overlapped with a layer of weft yarns. The warp yarns and weft yarns are woven together to form a fabric through stitching. The advantages of stitchbonded fabrics are as follows:
① It can increase the ultimate tensile strength, anti-delamination strength and flexural strength of Fiber Glass laminated products under tension;
②Reduce the weight of Fiber Glass products;
③The flat surface makes the Fiber Glass surface smooth;
④ Simplify hand lay-up operations and improve labor productivity. This kind of reinforcing material can replace continuous strand mats in pultrusion glass yarn and RTM, and can also replace checkered cloth in centrifugal glass yarn tube production.