Manufacturing method of polyester full matte POY
Polyester full matte POY is an important raw material for the production of chemicals, which is widely used in textile and chemical fiber industries. This article will introduce the manufacturing method of polyester full matte POY, including raw material preparation, polymerization, spinning, drafting, winding and other processes.
I. Raw material preparation
Manufacturing polyester full matte POY is the first task is to prepare raw materials. The main raw materials are purified terephthalic acid (PTA) and ethylene glycol (EG). These two raw materials are mixed according to a certain molar ratio, and polyester chips are generated through esterification reaction.
II. Polymerization
The generation of polyester chips requires a polymerization reaction. In the polymerization reaction, PTA and EG under the action of catalyst, polycondensation reaction to produce polyester chips. The polymerization reaction generally adopts the continuous polymerization method, and the reaction temperature and pressure need to be strictly controlled to ensure the molecular weight and molecular weight distribution of the chips. Spinning
Polyester chips, after drying and melting, are extruded through the spinneret in the spinning box to become silk strips. The aperture size of the spinneret determines the fineness of the filaments. In the spinning process, it is necessary to control the temperature of the melt, the pressure and the aperture of the spinneret in order to obtain uniform filaments. Four, drawing
silk extruded from the spinneret, need to be drawn to increase its strength and fineness. The drafting process generally adopts multi-stage drafting method, through gradually increasing the drafting ratio, so that the silk gradually reach the required fineness and strength. In the drafting process, it is necessary to control the drafting speed and tension in order to avoid the breakage or deformation of the filament. V. Winding
The silk strips after drafting need to be wound for subsequent processing and use. The winding process generally adopts high-speed winding machine to wind the silk into a certain shape and specifications of the coil. In the winding process, the winding tension and speed need to be controlled to ensure the quality of the winding and the performance of the filament. Above is the manufacturing method of polyester full matte POY. In the manufacturing process, it is necessary to strictly control the process parameters and quality indicators of each process to ensure the quality and performance of the final product. At the same time, it is also necessary to strengthen the health and safety management of the production site to ensure the smooth progress of the production process.
VI.Quality control
In the manufacturing process of polyester full matte POY, quality control is a vital link. In order to ensure the stability and reliability of product quality, it is necessary to carry out strict quality inspection and control of each process. Specifically, parameters such as the quality of raw materials, the conditions of polymerization reaction, the temperature, pressure and spinneret aperture in the spinning process, the speed and tension in the drafting process, and the tension and speed in the winding process need to be monitored and adjusted in real time. In addition, it is necessary to carry out quality inspection on the produced polyester full matte POY to ensure that it meets the relevant standards and customer requirements.
VII. Environmental protection and sustainable development
The manufacturing process of polyester full matte POY will produce a certain amount of waste gas and waste water, which will have a certain impact on the environment. Therefore, it is necessary to strengthen the environmental protection management during the manufacturing process and take effective measures to reduce the emission of waste gas and waste water to reduce the impact on the environment. At the same time, it is also necessary to actively promote the concept of sustainable development, the use of environmentally friendly materials and processes, improve the efficiency of resource utilization, and achieve the coordinated development of economic and environmental benefits.
In conclusion, the manufacturing method of polyester full matte POY needs to comprehensively consider the process parameters and quality indexes of raw material preparation, polymerization, spinning, drafting, winding and other processes, and strengthen the quality control and environmental protection management, in order to achieve high-quality, high-efficiency and environmentally friendly production of the product.
