Auxiliary agents, also known as additives, are substances that are added to a material to improve or modify its properties. In the field of polymers, auxiliary agents are commonly used to enhance the processing, performance, and durability of polymer materials. Auxiliary Agent,Liquid Phenolic Resin,Phenolic Resin,Composite Phenolic Epoxy Resin Shanghai Shengduan Trading Co., Ltd. , https://www.sdcuringagent.com
Rotary Spray Dryer: Advantages: Single machine output is large (1000 ~ 20000 tons/year), high thermal efficiency, low energy consumption, uniform product size, good appearance, good water solubility, stable operation; disadvantage: high investment in equipment It covers a large area, has a long construction period, and requires strict equipment maintenance and maintenance.
Air Spray Dryer: Advantages: Equipment investment, equipment, small footprint, short construction period, less maintenance and simple equipment maintenance; Disadvantages: single machine output is small (generally less than 3,000 tons / year), high energy consumption, product size is not Uniform, poor appearance, water solubility, poor operating stability.
For the choice of heat source, most manufacturers use coal-fired high-temperature flue gas as the drying medium, the temperature can reach 300°C-420°C, and the thermal efficiency is high. In order to reduce the insoluble content of products, some manufacturers use hot air stoves and use clean hot air as a drying medium. The coal-fired furnace can adopt different forms, and can be selected according to the actual needs of the manufacturers. Generally, for small-scale and less-automated manufacturers, hand-fired furnaces can be used, the investment is low, the scale is large, and the degree of automation is high. Manufacturers can use chain grate, mechanical coal, mechanical slag, stable operation, high degree of automation, simple operation, but the investment is relatively high. Our company can also provide you with various forms of combustion furnaces, such as oil burners and gas stoves.
Jinan Aonuo Energy Technology Co., Ltd. develops and produces 10,000 tons/year special naphthalene water-reducing agent spray drying equipment, using a rotary spray dryer, a reasonable system configuration, low installed power, high degree of automation, beautiful appearance, tower body Take the open air layout, low civil construction costs and good operating environment. The company is responsible for turnkey projects such as design, processing, installation, commissioning, and personnel training. It has provided several sets of 10,000 tons/year naphthalene water reducer spray drying to Shandong Laiwu, Nanjing, Jiangsu, Jinan, Shandong, Tianjin Lijian and other places. Complete sets of equipment, advanced technology, mature, reliable performance, widely praised by users.
There are several types of auxiliary agents, each with its own unique properties and applications. The most common type is processing aids, which are added to polymer materials to improve their flow and moldability during processing. Processing aids can improve the surface finish of the final product and reduce the amount of energy required during processing.
Another type of auxiliary agent is plasticizers, which are added to polymer materials to increase their flexibility and reduce their brittleness. Plasticizers can improve the toughness and impact resistance of the final product and are commonly used in the production of flexible PVC products, such as hoses and films.
Other types of auxiliary agents include stabilizers, which are added to polymer materials to protect them from degradation caused by heat, light, or chemical exposure. Stabilizers can improve the durability and longevity of the final product and are commonly used in outdoor applications, such as building materials and automotive parts.
Colorants, fillers, and flame retardants are also common types of auxiliary agents. Colorants are added to polymer materials to give them a specific color, while fillers are added to improve the mechanical properties of the final product, such as its strength and stiffness. Flame retardants are added to polymer materials to reduce the risk of fire and are commonly used in applications where fire safety is critical, such as building materials and electronics.
The choice of auxiliary agent depends on the specific application requirements and must be carefully considered to ensure that the final product meets the desired specifications. It is important to select the appropriate auxiliary agent to achieve the desired performance, processing, and durability characteristics of the polymer material.
In summary, auxiliary agents play an important role in the processing, performance, and durability of polymer materials. There are several types of auxiliary agents, each with its own unique properties and applications, and the choice of auxiliary agent depends on the specific application requirements.
At present, the commonly used drying methods in the concrete water-reducing agent industry are rotary (centrifugal) spray dryers and air-flow spray dryers. The rotary spray dryer atomizes the feed liquid through a rotary atomizer located at the top of the tower, and then contacts the hot air from the top of the tower in a form of cocurrent flow, and rapidly dries to form a powdery product; air spray drying The machine uses compressed air or saturated (superheated) steam as the atomizing power. The two-fluid or three-fluid nozzle located under the drying tower atomizes the feed liquid and mixes with the hot medium entering the drying tower from the bottom of the tower. During the drying process, the dried mixed gas is discharged from the top of the tower and enters the product collection device at the rear of the tower. After the gas-solid separation, the powder product is obtained. Both drying methods have their own characteristics.