What are the new defect materials?
The polymer separation membrane is a semipermeable membrane made of high polymer material with selective permeation function. The semi permeable membrane, differential pressure, temperature gradient and concentration gradient or potential difference as the driving force, the liquid gas mixture, or a mixture of organic and inorganic solution separation technology compared with energy saving, high efficiency and clean characteristics, and is considered the major technical support of new technology revolution.
Used to prepare for separation, pervaporation, and liquid membrane separation. There are many kinds of polymeric materials used to prepare separation membranes. Now more are used poly maple, polyolefin, cellulose, lipids and silicone. There are many forms of film, such as flat film and air fiber. The popularization and application of polymer membrane can achieve great economic and social benefits. For example, exchange membrane electrolytic salt can reduce pollution and save energy by ion: the use of reverse osmosis desalination and desalination, energy consumption than other methods are small; from the air oxygen enrichment can greatly improve the recovery rate of oxygen by gas separation membrane.
High polymer materials include plastics, rubber, fibers, films, adhesives and coatings. Among them, plastic, synthetic fiber and synthetic rubber, which are called the three most important synthetic materials of modern polymers, have become important materials for national economic construction and people's daily life. Although the polymer materials and get rapid development because generally has many advantages of metal and inorganic materials can not be replaced, but the use of polymer material has now mass production or only unusual conditions, namely the so-called universal polymer, which has the disadvantages of poor rigidity, mechanical strength and heat resistance etc.. The development of modern engineering technology, it has put forward higher requirement to the polymer material, thus promoting the polymer materials to high performance, functional and biological development, there are many low yield, high price and excellent performance of new polymer materials.
