Wuhan Handern reinforced materials

DATE：2021/2/1 8:44:38 / READ： / SOURCE：This station

Wuhan Handern reinforced materials

The difference between reinforcing materials and filling materials is: generally, the additives that have great interaction with matrix resin at interface and great improvement effect on mechanical properties are called reinforcing agents, while the additives that have little interaction at interface and little improvement effect on mechanical properties are called fillers. If we divide it from shape, we call the fibers with large aspect ratio (or aspect ratio) as reinforcing materials, and the granular and powdery materials as filling materials. The reinforcing materials mainly include glass fiber, carbon fiber, boron fiber and organic fiber. Among them, glass fiber is widely used. 1. Types and properties of glass fiber. 10ml virus sampling tube www.handern.com
According to the content of alkali metal oxide in glass fiber, it can be divided into alkali free glass fiber (K2O, Na20 < 1%), alkali glass fiber (8 ~ 12%) and high alkali glass fiber (14 ~ 15%). According to the diameter of glass fiber: primary glass fiber (monofilament diameter above 201m); intermediate glass fiber (10 ~ 204m); advanced fiber (3 ~ 94m); super glass fiber (below 31m). The larger the diameter is, the more quotient the strength is, the better the twist is. The main reason is that the smaller the fiber diameter is, the smaller the surface cracks are, so the tensile strength increases sharply with the decrease of fiber diameter.
The diameter of glass fiber used by Cao Qiang seed is 6-15m, which belongs to dry commercial and intermediate child fiber. The tensile strength of this kind of fiber is generally 1980-90p, so the reinforced plastics have high mechanical strength. In direct proportion to Quan He, there is no point of wax clothing, and Wang Tuan Nong. When the external force is removed, the fiber will return to its original shape, so it has excellent dimensional stability. The elongation of glass fiber is generally 3%. The modulus of glass fiber is about (588 ~ 784) x 102 MPa, while that of cotton fiber is only 9.8 x 102 MPa. Glass fiber below 300C, the performance remains unchanged, has high heat resistance; non hygroscopic, even in humid conditions will not expand, elongation, decomposition or chemical change, nor rot and mildew; excellent electrical properties, with small dielectric loss tangent and low dielectric constant. 10ml virus sampling tube www.handern.com
In reinforced plastics, most of the commonly used plastics are non-polar polymers, and inorganic fillers are mostly polar substances. Therefore, inorganic fillers can only be combined with very weak van der Waals force if they are to be filled into plastics. In order to change the interface state and enhance the affinity between plastics and polymer resin, coupling agent or other surface treatment agent can be used to treat the surface of inorganic fillers to change its hydrophilicity into hydrophobicity. Through it, inorganic and organic substances can be uniformly and closely combined.
Titanate coupling agent is a kind of coupling agent developed in 1970s, which is different from the traditional coupling agent in that it can form a single molecular layer on the surface of inorganic filler. 10ml virus sampling tube www.handern.com

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