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Among the components of rubber, in addition to raw rubber, the largest amount is filler. The role of filler is very important, it can not only improve the physical and mechanical properties of rubber products, but also improve the processing performance of rubber materials to a certain extent (especially the processing performance of rolling and extrusion), and can reduce the cost of products.
There are many types of fillers, which can be divided into reinforcing fillers and compatibilizing fillers according to their main role in rubber materials. The main function of reinforcing filler is to improve the hardness and physical and mechanical properties of rubber products (such as wear resistance, tear strength, tensile stress, tensile strength, elastic modulus, stiffness, etc.), so it is also called reinforcing agent or reactive filler. The main function of compatibilizing filler is to increase the volume of rubber compound, in order to save raw rubber raw materials, so as to reduce costs, so it is called compatibilizing agent, filler or inert filler.
It is difficult to separate enhancers from fillers, and generally speaking, reinforcing agents also have a capacitizing effect, while fillers also have a certain reinforcing effect. In particular, due to the different types and properties of raw rubber, it is also difficult to define the difference between reinforcing agents and fillers.
In rubber engineering, it is usually done with:"Elastic performance"(ie.)"Tearing off work"The magnitude and variation characteristics of the value are used to measure the reinforcing effect of various fillers in the rubber, as shown in the figure below.
Pictured: Comparison of elastic properties of various fillers.
1-carbon black, 2 zinc monoxide, 3-clay, 4-calcium carbonate.
So-called"Elastic performance"It refers to the work expended when the rubber is torn off. As can be seen from the figure, carbon black and zinc oxide have good reinforcing effects in a wide range of dosages. Therefore, it is called a reinforcing agent.
The reinforcing effect of clay, calcium carbonate and other compounding agents"is smaller, so it is often referred to as a filler.
There are many types of reinforcing agents, mainly carbon black, silica, silicate, carbonate, metal oxide, some organic matter, rubber powder, recycled rubber and staple fiber.
In rubber, the purpose of using reinforcing fillers is:
1) Increase the volume and reduce the cost.
2. Improve the mixing properties of rubber (such as adjusting plasticity, viscosity, preventing shrinkage, improving surface properties, etc.).
3. Improve the properties of vulcanized rubber (such as increasing tensile strength, tear strength, and abrasion resistance); Adjust hardness and elastic properties; Improve the heat resistance, oil resistance, weather resistance, electrical insulation performance of rubber, etc.
4. Other functions, such as reducing heat shrinkage during vulcanization of hard rubber, and adjusting the viscosity of latex and paste.
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Look at what you're enhancing the filling. Reinforcement filling generally refers to the degree to which something is enhanced. It's like enhancing the fill color, which is darkening those colors a little bit bit and so on. Thank you.
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Summary. What is Filling.
Can you elaborate on that a little bit more?
Definition of filling in the traces: 1Fill; Supplement.
1. This object is fragile, please be sure to fill it with enough filling. 2. If I were a poet, I would use all kinds of rhetoric to fill in those jumping notes and smart melodies. 3. Life should be guided and used with hope.
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