A method for sweating and preparing wax for plastic processing

Abstract

The invention discloses a method for sweating and preparing wax for plastic processing. The method comprises the following steps: by taking a by-product, namely polyethylene wax, of polyethylene as a sweating raw material, emulsifying and sweating, thereby obtaining the target product. According to the method disclosed by the invention, an oil-soluble emulsifier and oil-soluble acid are dissolved in the sweating raw material to serve as an oil phase material on the basis of an ordinary sweating process, an inorganic salt solution serves as an aqueous phase material and is sweated after emulsification, and a tiny space is formed after bubbles and salt solution produced by reaction between the oil-soluble acid and the inorganic salt are discharged, so that the rapid discharge of the liquid components is facilitated. Meanwhile, the solid components and the liquid components can be forcibly separated by enabling airflow to carry out the liquid oil through a wax layer in the sweating process, so that low molecular weight components in the raw material can be effectively removed. The method disclosed by the invention has the advantages of low equipment investment, simple production process, low operating cost, safety, no solvent pollution and the like, and the prepared product can serve as an assistant for plastic processing.

Description

technical field [0001] The invention belongs to the technical field of special wax production, in particular to a method for sweating and preparing wax for plastic processing. Background technique [0002] Wax substances are commonly used additives in plastic processing, such as lubricants for various plastic processing. [0003] Lubricants used in plastic processing are to improve the fluidity and release properties of plastics, especially thermoplastics, during processing and molding. Molecules rub against each other, thereby improving the processing performance of plastics and improving the performance of products. At the same time, the lubricant can also act as a melting accelerator, anti-adhesion and antistatic agent, and slip agent. [0004] According to the mechanism of action of lubricants in plastic processing and molding, lubricants are divided into internal lubricants and external lubricants. Lubricants are widely used, rigid PVC, polyolefin, PS, ABS, phenolic ...

AI Technical Summary

Problems solved by technology

[0014] Compared with solvent separation, the sweating process is an intermittent operation, and the product yield is lower and the production cycle is longer, but the sweating process has the advantages of less investment, simple production process, low operating cost, safe production process, energy saving and no pollution to the environment, etc. Advantages, some manufacturers are still using this method to produce soap wax products

[0015] Over the years, the sweating method has been developed in terms of equipment and technology, such as CN89214332 (vertical square multi-section partition sweating tank), CN94223980.6 (dish-type sweating device), CN98233254.8 (paraffin wax sweating tank), CN200920033500.X (New paraffin sweating tank), CN201210508905.0 (a high-efficiency paraffin sweating device), CN201320127680.4 (tubular paraffin deoiling device), etc., have made improvements in sweating equipment; CN91206202 (a high-efficiency paraffin sweating tank) Improvements have been made in the sweating process, but these improvements still cannot produce wax products with a melting point above 70°C