New Polymer Materials

 Polymer materials include plastics, rubber, fibers, films, adhesives, and coatings. Among them, plastics, synthetic fibers, and synthetic rubber, known as the three major synthetic materials of modern polymers, have become essential and important materials for national economic construction and people's daily life. Despite the rapid development of polymer materials due to their widespread advantages that cannot be replaced by many metal and inorganic materials, the polymer substances that have been mass-produced and can only be used under ordinary conditions, known as general-purpose polymers, have drawbacks such as poor mechanical strength and rigidity, and low heat resistance. The development of modern engineering technology has put forward higher requirements for polymer materials, thus promoting the development of polymer materials towards high-performance, functionalization, and biotechnology. As a result, many new polymer materials with low production, high price, and excellent performance have emerged.

Polymer separation membrane

Polymer separation membrane is a semi permeable membrane made of polymer materials with selective permeability. The use of such semi permeable films, driven by pressure differences, temperature gradients, concentration gradients, or potential differences, makes separation technologies for gas mixtures, liquid mixtures, or solutions of organic and inorganic substances more energy-efficient, efficient, and clean. Therefore, it is considered a major technology supporting the new technological revolution. The membrane separation process mainly includes reverse osmosis, ultrafiltration, microfiltration, electrodialysis, pressure dialysis, gas separation, pervaporation, and liquid membrane separation. Used for preparation of separation, pervaporation, and liquid membrane separation. There are many types of polymer materials used to prepare separation membranes. Nowadays, the most commonly used ones are maple, polyolefin, cellulose lipids, and organic silicon. There are also various forms of membranes, generally using flat membranes and airborne fibers. The promotion and application of polymer separation membranes can achieve significant economic and social benefits. For example, using ion exchange membranes to electrolyze salt can reduce pollution and save energy: using reverse osmosis for seawater desalination and desalination consumes less energy than other methods; The use of gas separation membranes to enrich oxygen from the air can greatly improve oxygen recovery rate. [1]

Polymer magnetic materials

Polymer magnetic materials are one of the materials that endow the traditional applications of magnetism and polymers with new meanings and contents, while continuously exploring new application fields of magnetism and polymer (synthetic resins, rubber). Early magnetic materials originated from natural magnetite, and later were sintered or cast into magnetic materials using magnetite (ferrite). Currently, there are three commonly used magnetic materials in industry, namely ferrite magnets, rare earth magnets, and aluminum nickel cobalt alloy magnets. Their disadvantages are both hard and brittle, and poor processability. In order to overcome these defects, polymer magnetic materials made by mixing magnetic particles in plastic or rubber have emerged. The composite polymer magnetic materials made in this way have attracted increasing attention due to their light weight, easy processing into products with high dimensional accuracy and complex shapes, and the ability to be integrated with other components for molding.

Polymer magnetic materials can be mainly divided into two categories, namely structural and composite types. The so-called structural type refers to magnetic bodies made from polymers without the addition of inorganic magnetic particles. Currently, the main type with practical value is the composite type. [5]