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How to choose fiberglass cloth?

Author: Site Editor     Publish Time: 2020-12-01      Origin: Site

What is fiberglass cloth?

Glass fiber cloth is made of glass fiber during dipping and does not contain any halogen (such as chlorine, bromine), a flame retardant mixed solution of high-efficiency inorganic flame retardant, after dipping and curing. The double-sided adhesive coating absorbs a lot of heat when burned by a flame, and prevents the flame from passing through, and isolates the air.

Inorganic flame-retardant compounds can dilute surface crystal water, reduce heat intrusion, and protect wire and cable insulation from burning. At the same time, less smoke is produced during the combustion process, which has the advantage of reducing the environmental pollution. Therefore, the material is particularly suitable for various smoke-free, low-smoke, clean high-grade flame-retardant cables, fire-resistant cables, and cable winding tapes. The alkali-free glass fiber cloth is woven with alkali-free glass fiber yarn and has certain heat resistance. Performance and insulation are mainly based on shuttleless fabrics.

fiberglass cloth

What are the classifications of glass fiber materials?

Mainly medium-alkali glass fiber cloth and non-alkali glass fiber cloth.

The medium-alkali glass fiber tape is woven with medium-alkali glass fiber yarn, which has good acid resistance, high-temperature resistance, high tensile strength, and is easy to bond with resin.

Non-alkali fiberglass cloth referred to as alkali-free cloth, is suitable for reinforcing materials such as mica products, varnished cloth, and glass steel for electrical insulation.

FRP water tank

Why use non-alkali and medium-alkali instead of high-alkali glass fiber cloth?

High alkali glass fiber cloth has poor water resistance, poor corrosion resistance, poor weather resistance, and no aging resistance.

High-alkali glass fiber cloth is generally drawn from broken flat glass, broken bottle glass, and other raw materials. It is a typical sodium silicate glass fiber cloth. Because of its poor water resistance, it is quickly corroded by alkali in the magnesite cement material, and the strength of the magnesite product is severely lost. . Therefore, the new JC/T646-2006 glass magnesium air duct industry-standard prohibits the use of high-alkali glass fiber cloth, and emphasizes the use of medium-alkali and alkali-free glass fiber cloth. Other related magnesite products also draw lessons.

In the production, high-alkali glass cloth (or silk) is used as a reinforcing material, which is neither resistant to alkali corrosion nor aging. After many tests and observations by relevant departments and enterprises, the high-alkali glass fiber cloth has been pulverized after being placed in the open-air environment of the roof in less than a year. The glass fiber becomes fine powder and flutters in the air with the wind, which proves The alkali glass fiber cloth has extremely poor weather resistance.

High-alkali glass fiber cloth has poor chemical stability, especially poor water resistance. It belongs to the third level of hydrolysis and is easily corroded by atmospheric moisture to cause alkali damage, which makes the fiber brittle and loses strength.

Non-alkali glass fiber vs medium-alkali glass fiber

Non-alkali glass, also known as E-glass, is borosilicate glass. R2O content of less than 0.8%. It is an aluminoborosilicate component. Its chemical stability, electrical insulation properties, and strength are all very good. At present, it is the most widely used glass fiber with a glass component. It has good electrical insulation and mechanical properties. It is widely used in the production of glass fiber for electrical insulation, and it is also widely used in the production of glass fiber for glass fiber reinforced plastic. Its disadvantage is that it is easy to be Inorganic acid corrodes, so it is not suitable for use in an acid environment.

Medium-alkali glass is also called C-glass. The content of R20 is 11.9%-16.4%. It is a soda-lime silicate component. Because of its high alkali content, it cannot be used as an electrically insulating material, but its chemical stability and strength are good. It is characterized by its chemical resistance, especially acid resistance, which is better than that of alkali-free glass, but its electrical properties are poor, and its mechanical strength is 10% to 20% lower than that of alkali-free glass fiber. It is used to produce corrosion-resistant glass fiber products, such as the production of glass fiber surface mats, and it is also used to strengthen asphalt roofing materials. Because its price is lower than alkali-free glass fiber, it has strong competitiveness.

Non-alkali and medium-alkali glass fiber products account for more than 98% of the current total output of glass fiber. They are the two most widely used products. In the glass fiber industry, glass fiber generally refers to alkali-free and medium-alkali products. Briefly compare the two in terms of performance, production technology, and application areas.

The strength of alkali-free glass is higher than that of medium-alkali glass. There are many factors that affect the strength of glass, mainly chemical composition, fiber diameter, storage time, and environment. For glass fiber products in actual production, in addition to the above factors, their strength has a lot to do with the quality of glass melting, molding process and equipment, and the type and quality of sizing agent.

Alkali-resistant glass fiber mesh cloth

Alkali-resistant glass fiber mesh cloth is made of medium-alkali and alkali-free glass fiber mesh cloth as the base material and is post-treated with acrylic copolymer glue. The mesh cloth has high strength, alkali resistance, excellent acid resistance, and adhesion to resin Strong, easy to dissolve in styrene, stiff, excellent positioning, mainly used as reinforcement materials for cement, plastic, asphalt, roofing, and walls. Mainly used for GRC pre-laying, painting, or mechanized forming, especially suitable for on-site construction of the production process and advantages of alkali-resistant glass fiber mesh for external wall insulation engineering.

Alkali-resistant glass fiber mesh cloth

Alkali-resistant glass fiber mesh cloth is the base material of glass fiber reinforced cement (GRC). With the deepening of wall reform and economic development, GRC has been widely used in building interior and exterior wall panels, insulation panels, air duct panels, garden sketches, and art Sculpture, civil engineering, and many other uses. Some products and components that are difficult to achieve or incomparable to reinforced concrete can be made. It can be used for non-load-bearing, secondary load-bearing, semi-load-bearing building components, decorative parts, and agricultural and animal husbandry facilities.

Alkali-resistant glass fiber mesh cloth is an alkali-resistant glass fiber. Compared with ordinary alkali-free and medium-alkali glass fibers, it has its remarkable characteristics: good alkali resistance, high tensile strength, and it is used in cement and other strong alkali media. Extremely strong corrosion resistance, it is an irreplaceable reinforcing material in glass fiber reinforced cement products (GRC).

What are the applications of fiberglass cloth?

Fiberglass cloth is widely used for wall reinforcement, (internal) external wall insulation, roof waterproofing, etc. It can also be used for the reinforcement of cement, plastic, asphalt, marble, mosaic, and other wall materials.

Glass fiber cloth plays an important planning role in the insulation system, and it is important to prevent the occurrence of gaps. Due to its acid and alkali resistance and high tensile strength of warp and weft yarns, the external wall insulation system can be evenly distributed. It hinders the deformation of the entire insulation scheme caused by external friction and has the function of soft "reinforcing steel".

fiberglass cloth

The main functions of glass fiber are fire resistance, temperature resistance, corrosion resistance, and weather resistance. Mainly used in aerospace manufacturing, shipbuilding, food, new energy vehicles and traditional automobile manufacturing, railway transportation, wind energy, solar energy, and other industries.

Non-alkali glass cloth is mainly used to produce shells, molds, storage tanks, and insulated circuit boards of car bodies and ship bodies.

Medium alkali glass cloth is mainly used to produce corrosion-resistant products such as chemical containers, and can also be used to produce plastic-coated packaging cloth. The properties of the fiber used in the production of the fabric, the yarn structure, and the warp and weft density of the fabric affect the characteristics of the fabric.

The quality of non-alkali glass fiber is slightly higher than that of medium-alkali glass fiber. At present, high-end products in various application fields are non-alkali glass fiber. Medium-alkali products are used in fields that require relatively low fiber performance, such as ordinary Traditional FRP industries such as winding, pultrusion, and hand lay-up.

Organization structure classification of glass fiber cloth

Glass fiber cloth usually has plain weave glass fiber cloth, twill glass fiber cloth, satin glass fiber cloth.

Glass fiber plain weave refers to a woven fabric made by interlacing warp and weft at 90 angles. In the glass fiber industry, spun yarn (monofilament diameter below 9 microns) is generally used for weaving. In addition to the plain weave method, there are also double plain glass fiber cloths, and different weaves such as twill or satin weave can also be used to form different types of glass fiber cloths.

double plain glass fiber cloths

Some plain weave fabrics are used in the construction and composite materials industry, while others are mainly used in composite coatings and then used for thermal insulation. Mainly there are differences in texture, thickness, and strength. Untwisted roving plain weave fabric is an important substrate for hand-laid glass fiber reinforced plastic.

plain glass fiber cloth

For example, glass fiber tape. It is made of glass fiber through the plain weave and has two types: smooth sideband and raw sideband. Generally, parts of electrical equipment that require good dielectric properties and high strength are made of glass fiber.

Plain weave fiberglass cloth, because the warp and weft yarns are interlaced every other one, so there are the most interweaving points, and the glass fiber has the most buckling times, which makes the fabric firm, wear-resistant, and feel harder, but has less elasticity and poor gloss; The appearance effect of the front and back of the plain weave cloth is the same, the surface is flat, and the pattern is monotonous.

Twill glass fiber cloth is divided into single-sided twill and double-sided twill. Warp and weft yarns are interlaced less frequently than plain weave so that the space between warp and weft yarns is smaller, and glass fibers can be arranged closely so that the fabric is denser, thicker, better luster, softer, and more elastic than plain weave. Under the same conditions of yarn density and thickness, its abrasion resistance and fastness are not as good as plain weave fabrics.

Twill glass fiber cloth

Satin fiberglass cloth. It is the collective name of various specifications of satin glass fiber cloth organization. Including satin and satin weaves, various glass fiber fabrics with different specifications and styles.

Satin fiberglass cloth

Coated fiberglass cloth

Glass fiber coated cloth, based on glass fiber cloth, is coated with corresponding chemical raw materials through a special coating process to make it have a specific purpose.

Mainly include glass fiber refractory coating cloth, glass fiber high-temperature resistant coating cloth, glass fiber waterproof coating cloth, glass fiber dust cloth, glass fiber flame retardant coating cloth, glass fiber anti-ultraviolet coating cloth, glass fiber anti-static coating Layer cloth, glass fiber alkali-resistant coated cloth, glass fiber corrosion-resistant coated cloth, glass fiber vermiculite coated cloth, glass fiber anti-allergic cloth and other post-treated glass fiber cloth.

The main coating types are PTFE fiberglass coated cloth, silicone fiberglass coated cloth, PVC fiberglass coated cloth, etc.

The main characteristics of glass fiber high temperature resistant fireproof coating cloth: high-temperature resistance, corrosion resistance, high strength, lightweight and softness, non-toxic, long life, waterproof, etc.

Silicone coated fiberglass cloth

Silicone coated glass fiber cloth is made of glass fiber cloth as the base material, and silicon rubber is uniformly covered on the glass fiber cloth by replacing or calendering it. High temperature, high strength, and non-combustibility. It also has excellent mechanical processing properties, weather resistance, chemical stability, and the economy of silicone rubber. Therefore, silica gel coated glass fiber cloth is widely used in the production of various industrial fields as a more commonly used thermal insulation material.

Silicone Coated Fiberglass Sleeve

Silicone coated glass fiber cloth has the following characteristics:

The silicone-coated glass fiber cloth has an alkali-free glass fiber base cloth with excellent high/low-temperature resistance, which can ensure that the silicone-coated glass fiber cloth can work for a long time at a thermal conductivity of 550°C. Excellent silicone rubber mixing technology can make the silicone cloth have better high-temperature stability, and will not rapidly aggravate cracks or even burn when exposed to heat. High-quality silicone cloth also has excellent low-temperature resistance. It still has good elasticity in a low-temperature environment of -50°C. It is precise because of the excellent high/low-temperature resistance of high-temperature silicone cloth, it has been widely replaced by various high-temperature thermal insulation protection and low-temperature thermal protection projects.

Silicone coated fiberglass cloth has excellent weather resistance and high-temperature resistance. The silicone rubber mixed vulcanization process makes the silicone cloth have higher weather resistance and aging resistance. Whether it is direct sunlight, rain erosion, extreme conditions, high-quality high-temperature silicone cloth can ensure replacement for more than 10 years.

The silicone cloth has excellent airtightness and is very good, and can well block the erosion of water, steam, and other chemical solvents. At the same time excellent. The tear resistance can prevent the surface from being scratched or punctured by sharp objects, and effectively protect the target object.

Silicone coated glass fiber cloth has good elasticity and can be reduced in size. It should be easy to cut, and there will be no loose edges after shrinking, no hairiness, and can be replaced. At the same time, excellent fabric elasticity makes it possible to have no overlap.

The surface of the silica gel-coated fiberglass cloth is smooth and beautiful, and the excellent coating process of various colors ensures that the surface of the silica gel cloth is flat, the color is uniform, and the glue fastness is good.

PTEC coated glass fiber cloth

Made of PTFE high-performance glass fiber. This is a new product with high performance and multifunctionality of complex materials.

It is between low temperature -196 degrees and high temperature between 300 degrees, with weather resistance and anti-aging;

Non-adhesive: No residues, easy to clean, and can be used for food baking;

Resistant to chemical corrosion, strong acid, strong alkali, aqua regia, and various organic solvents;

Low friction coefficient (0.05-1), it is the best choice for oil-free self-lubrication;

It has high insulation properties (small dielectric constant: 2.6, tangent below 0.0025), anti-ultraviolet, anti-static

Good dimensional stability (elongation coefficient less than 0.5%) and high strength. Has good mechanical properties.


PVC coated fiberglass cloth

PVC coated fiberglass cloth (glass fiber coated cloth, PVC coated cloth, waterproof cloth, tarpaulin) tarpaulin type polyvinyl chloride (PVC) coated cloth based on glass fiber cloth, glass cotton cloth, and chemical fiber cloth, Coated by a special process.

It is waterproof, flame-retardant, mildew-proof, cold-proof, and anti-corrosion (referred to as three-proof cloth, five-proof cloth); anti-aging; anti-ultraviolet; easy to clean; high-temperature resistance (180 degrees), good heat preservation, etc. The main features are waterproof, Fire-proof, cold-proof, anti-corrosion, etc.


 It can be used to build all kinds of tents, temporary houses, as architectural membrane materials, make various landscape projects, fireproof welding blankets, make fireproof tapes, tarps for automobile transportation, sunshade curtains, etc.

For example, the PVC fiberglass sunshade curtain manufactured by our company is different from various traditional curtain, which produced by special processing with technology of FEIFU Company in U.S. Such adumbral curtain could effectively prevent sunlight and ultraviolet to provide a satisfactory environment which is good for your healthy, by getting nature light, enhancing living quality and making your sight feel comfortable. In addition, it helps to decrease the losing of yellow light and wet which benefit the growth of indoor plant; prevents heat; one-way perspective characteristic will not only ensure privacy, but eyeshot.

Aluminum foil composite glass fiber

The aluminum foil composite glass fiber cloth adopts a unique advanced composite process, and a special flame-retardant adhesive is selected to form a dense film. The composite aluminum foil has a smooth and flat surface, high light reflectivity, high tensile strength in vertical and horizontal directions, airtight, and Water permeable, and good sealing performance.

It is mainly used for heat preservation materials of heating and cooling equipment pipes, sound-absorbing and sound insulation materials, rock wool, and superfine glass wool outer protective layer, which play the role of flame retardant, anti-corrosion, heat insulation, and sound absorption. At the same time, it can be applied to the moisture-proof, anti-fog, and anti-corrosion packaging materials of export equipment.


It can also be used for the protective wrapping of petroleum transportation pipelines, steam pipelines, and other chemical equipment, playing the role of flame retardant, anti-corrosion, and heat insulation.

In addition to the above-mentioned glass fiber coated cloth, we also have composite material cloth (mainly aerospace composite material cloth, sports equipment cloth, imitation carbon fiber decorative cloth, electroplating cloth, etc.); construction material cloth (building membrane material, A-level soft Membrane ceilings, fiberglass wallpaper, fiberglass cloth curtains, and projection screens, etc.); fiberglass filter cloth and other products.

How to distinguish the quality of fiberglass cloth?

Judge the quality by observing the glass fiber cloth on the surface. High-quality glass fiber cloth has a clean surface, uniform warp, and weft lines, better toughness, and even mesh. The glass fiber cloth with poor quality has uneven mesh and poor toughness.

The chemical stability is relatively good, and the glass fiber cloth of relatively good quality has relatively stable chemical properties and is resistant to alkali, acid, water, cement erosion, and other chemical corrosion, and it is safe to use.

Judge the quality of fiberglass cloth by color. The color of fiberglass cloth with better quality is shiny and more uniform, while fiberglass cloth with poor quality is not only scratchy when touched, but the color is darker and turbid.

Judge the quality of the glass fiber cloth by stretching the glass fiber cloth. A good glass fiber cloth is not easy to deform and can be restored by stretching, while a poor quality glass fiber cloth is stretched, its deformation will be difficult to restore to its original shape, affecting normal use.

For example, the quality of aluminum foil glass fiber cloth depends on the quality of glass fiber. Simply put, whether the weaving effect is good or not, whether the weaving is smooth, and whether the thickness is uniform.

The aluminum foil composite glass fiber cloth adopts a unique advanced composite technology, which has a smooth and flat surface of the composite aluminum foil, high light reflectivity, high tensile strength in vertical and horizontal directions, airtight, and good sealing performance.

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