The role and application field of glass fiber

Glass fiber action:

1, Enhance the rigidity and hardness, the increase of glass fiber can improve the strength and rigidity of plastic, but the toughness of the same plastic will decline. Example: bending modulus;

2, Improve the heat resistance and thermal deformation temperature, taking nylon as an example, increase the nylon glass fiber, thermal deformation temperature increased at least twice, the general glass fiber reinforced nylon temperature can reach more than 220 degrees

3, Improve dimensional stability, reduce shrinkage;

4, Reduce warping deformation;

5, Reduce creep;

6, The flame retardant performance because of the candle wick effect, will interfere with the flame retardant system, affect the flame retardant effect;

7, Reduce the gloss of the surface;

8. Increase hygroscopicity;

9, Glass fiber treatment: the length of glass fiber directly affects the brittleness of the material. If the glass fiber is not treated well, the short fiber will reduce the impact strength, and the long fiber will improve the impact strength. In order to make the material brittle will not decrease greatly, it is necessary to choose a certain length of glass fiber.

Conclusion: To obtain good impact strength, the surface treatment and the length of the glass fiber are very important.

Glass fiber characteristics

Glass fiber is a kind of inorganic non-metallic material with excellent performance, a wide variety of advantages are good insulation, strong heat resistance, good corrosion resistance, high mechanical strength, but the disadvantage is brittleness and poor wear resistance. It is made of glass balls or waste glass by high temperature melting, wire drawing, yarn winding, weaving and other processes. The diameter of its monofilament is several microns to more than twenty microns, and each bundle of fiber filaments is composed of hundreds or even thousands of monofilament. Glass fiber is usually used as reinforcement materials in composite materials, electrical insulation materials and thermal insulation materials, roadbed panels and other fields of the national economy. Glass fiber is higher than organic fiber temperature resistance, non-combustible, corrosion resistance, good heat insulation, sound insulation, high tensile strength, good electrical insulation. But brittle, wear resistance is poor. Used to make reinforced plastics (see color picture) or reinforced rubber, as a reinforcing material glass fiber has the following characteristics, these characteristics make the use of glass fiber is far more extensive than other types of fiber. Glass fiber according to the shape and length, can be divided into continuous fiber, fixed length fiber and glass wool, according to the glass composition, can be divided into alkali free, chemical resistance, high alkali, medium alkali, high strength, high elastic modulus and alkali resistant glass fiber.

Application prospect

Editorial broadcast

(1)Information storage components: The use of photochromic compounds by different intensity and wavelength light can be repeatedly cycled color characteristics, can be made into computer memory storage components, to achieve information memory and elimination process. The density of the recorded information is unimaginably high, and the fatigue resistance is good, and the information can be written and erased quickly. This is a new development direction of new memory storage materials.

(2) Decorative and protective packaging materials: photochromic compounds can be used as nail paint, lacquer carving crafts, T-shirts, wall paper and other decorations. In order to meet different needs, photochromic compounds can be added to general ink or paint used in adhesives, diluents and other additives mixed to make screen printing ink or paint; Photochromic compounds can also be made into packaging films, dimming glass Windows of buildings, screen glass of automobiles and aircraft, etc., to protect sunlight and ensure complete protection.

(3) Self-developing holographic recording: This is a new type of self-developing + method photography technology made of the photosensitivity of photochromic materials. A thin layer of photochromic material (such as spiropyranan, capraxine, etc.) is coated on a support body such as a transparent film, which is not sensitive to visible light but only sensitive to ultraviolet light to form a colored image. This imaging method has high resolution, no operational error occurs, and the image can be recorded and erased anyway.

Discolored glass application

(4) National defense use: photochromic materials are particularly sensitive to strong light, so they can be used to make strong light radiation dosing. It measures ionizing radiation, detecting doses of ultraviolet, X-rays, y rays, etc. If it is applied to the outside of a spacecraft, it can quickly and accurately measure the dose of high radiation. Photochromic materials can also be made into multi-layer filters to control the intensity of radiation and prevent ultraviolet damage to the human eye and body. If the highly sensitive photochromic system indicator screen is used on weapons, it can record the whereabouts of aircraft and warships, forming a temporary trace that can fade

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