Rubber is a very important material widely used in automobiles, tires, shoes, pipes, etc. In order to improve the performance of rubber, people usually add different additives to rubber. Among them, carbon black is a commonly used additive, which can improve the wear resistance, crack resistance, and aging resistance of rubber. So why is 110 parts of carbon black added? Below I will answer this question from several aspects.
First, we need to understand what carbon black does. Carbon black is a kind of carbon black pigment, which has the characteristics of high specific surface area, high adsorption and high blackness. Adding carbon black to rubber can increase the mechanical properties of rubber such as strength, hardness, and toughness, and can also improve the durability of rubber such as anti-oxidation, anti-ozone, and anti-ultraviolet rays. Therefore, carbon black is a commonly used filler and reinforcing agent in rubber.
Second, we need to understand the basic composition of rubber. Rubber is an elastic material composed of high molecular polymers, the main components of which are natural rubber and synthetic rubber. Natural rubber is an emulsion extracted from the rubber tree, which contains a large number of rubber molecules and a small amount of impurities. Synthetic rubber is a polymer synthesized by chemical reaction, its composition and properties can be adjusted according to needs. In order to improve the performance of rubber, people usually add different additives to rubber, such as vulcanizing agents, accelerators, anti-aging agents, fillers, etc.
Then, we can analyze why 110 parts of carbon black should be added. This problem involves the formula design and process control of rubber. The formula design of rubber is a complicated process, which needs to take into account many factors, such as the use of rubber, performance requirements, production cost, etc. In formulation design, the amount and type of carbon black is an important parameter. Generally speaking, the more carbon black is used, the better the rubber's hardness, strength, wear resistance and other properties will be. However, the amount of carbon black also affects the processability and cost of the rubber. Therefore, balance and trade-offs need to be made between different factors.
In actual production, the amount of carbon black will also be affected by process control. The production process of rubber is divided into two stages of mixing and vulcanization. Kneading is to mix rubber and various additives together, and fully disperse and react them through mechanical force and heat energy to form a uniform mixture. Vulcanization means that after mixing, the rubber is heated and pressurized to cause a crosslinking reaction to form a rubber product with high strength and good elasticity. In the mixing stage, parameters such as the adding speed, time, and temperature of carbon black need to be controlled to ensure that the rubber and carbon black can be mixed uniformly, and that the carbon black can be completely dispersed in the rubber. In the vulcanization stage, it is necessary to control parameters such as the amount of carbon black and the vulcanization temperature and time to ensure that the rubber can be fully vulcanized and form high-quality rubber products.
Finally, we also need to understand some other factors. For example, the type and shape of carbon black can also affect the properties of rubber. Different types of carbon black have different physical and chemical properties and can be used in different rubber products. Different shapes of carbon black can also affect the properties of rubber. For example, spherical carbon black can improve the elasticity and toughness of rubber, while rod-shaped carbon black can improve the hardness and wear resistance of rubber. In addition, the surface treatment and pretreatment of carbon black can also affect the properties of rubber. Surface treatment can improve the dispersion and affinity of carbon black, and pretreatment can improve the activity and reinforcement of carbon black.
To sum up, why 110 parts of carbon black is added, this problem involves many aspects such as rubber composition, formula design, process control, type, shape, surface treatment and pretreatment of carbon black. The amount of 110 parts of carbon black is determined under the comprehensive consideration of the above factors, in order to achieve the balance between the optimal rubber performance and production cost.