The dispersion properties of carbon black have a great influence on carbon black and products. Usually, the three-roll mill grinds carbon black for dispersion. Commonly used dispersion media are glass beads, steel beads, and ceramic beads. The working principle of the three-roll mill grinding carbon black is to disperse and pulverize the carbon black by the shearing force and pressure
The main component of organic silicon defoamer is called silicon oil silicone component, silicone oil at room temperature is not volatile oily liquid, in water, animal and vegetable oils and mineral oil insoluble, or solubility is very small, both ability to high temperature, and low temperature. Chemical inertia, stable physical properties, no biological activity. Organic silicone defoamer is a white viscous emulsion.
Rubber additives in the storage and use of the process often appear sticky, harden crisp or crack and other aging phenomenon, causing this problem, mainly in the following categories: 1. Oxygen: Oxygen will react with the rubber molecules in the rubber additives to cause the molecular chain to break or over-crosslink, so that its performance changes. 2. Thermal: The temperature
The global automobile industry has been steadily launched, driving the consumption of rubber chemicals. The output of China’s rubber chemicals accounts for more than 70% of the world’s total, environmental protection tightens, supply is shortened, and prices rise substantially in 2017, and it is estimated that it will be stable in 2018. Let’s take a closer look at the results
Rubber chemicals are dangerous goods, flammable and explosive. Such as curing agent, oil, carbon black, organic accelerator and antioxidant.
Common high-temperature cable will be wrapped with a layer of “rubber protective layer”, when such a protective layer is damaged, the high-temperature cable inside will be damaged, so can not continue to use, so manufacturers will peripheral rubber protective layer anti-aging Processing, this process involves the antioxidant. The first point: Because of the different characteristics of each antioxidant, and different
Wire and cable will be subject to heat, oxygen, mechanical stress, light, high energy radiation and other factors in the usage, gradually aging, resulting in reduced product insulation properties. In order to extend the service life of wire and cable, cable manufacturers often use rubber antioxidant, but the protective effect of each antioxidant have limitations, and wire and cable and
The analysis of rubber chemicals in rubber products has important practical significance.As the rubber products added more types of additives, large differences in the amount of addition, part of the assists have reacts, so the full analysis of rubber additives is a There is a higher degree of difficulty.Through medium pressure chromatography, infrared spectroscopy qualitative method, identification of ethylene-propylene rubber
It is reported that car tires contain about 30% of carbon black, and this part of the carbon black is processed to increase the use of rubber for the durability. Carbon black is a product of carbon and other carbonaceous materials that are not completely burned or thermally decomposed under conditions of insufficient air, which means that it is not
