Hydrogel is a general term for materials with ecologically intelligent controlled release function. Its application fields cover all major industries, and it is one of the main functional polymer materials for future development in the 21st century. As a representative material in the gel industry, polymer hydrogel has relatively mature technical advantages and application experience, and has a very broad market prospect.
In 2002, for the first time, my country included the R&D and industrialization of ecologically intelligent controlled-release gel materials as a major national science and technology project during the Tenth Five-Year Plan. It passed the National High-Tech Research Program (863 Program), Torch Program, National High-Tech Industrialization Project, and Key New A large amount of investment has been made in product plans and funds for the transformation of agricultural scientific and technological achievements.
1. What is the significance of the development of hydrogels?
The gel industry is an emerging basic material application industry with high growth, high technology and high output value. Hydrogels have been widely used in various fields of economic construction, including modern agriculture and forestry, construction safety, resources and environment, biology and new medicine, food, household chemicals, electronic instruments, etc. With its own high-efficiency, energy-saving and environmental protection characteristics, hydrogel products continue to replace low-efficiency, high-energy-consumption, and high-polluting production materials and production processes, especially for water and soil conservation, water purification, soil heavy metal adsorption, and sewage heavy metal removal And the deep dewatering of sludge and pollution prevention are of great significance, and the future development potential of polymer gel materials and gel core products is huge.
In the past ten years, national policies have given great support to the gel industry, and as a result, some landmark results and progress have been made. However, due to the lack of systematic and in-depth basic research, the lack of mastery of key methods and technologies, and the lack of corresponding organization The development of the gel industry faces many difficulties and lacks international competitiveness.
From the perspective of national strategy, the establishment of a gel engineering technology research center will greatly improve the achievement transformation and industrialization capabilities of my country’s gel industry, meet the huge demand for the development of new materials and related industries in my country, and form independent intellectual property rights and international competition. It plays a vital role in promoting and promoting the development of the national economy and the development of the national economy.
2. What is polymer hydrogel?
Polymer hydrogels are gels in which water is the dispersion medium. Hydrogel is a new type of polymer material with a three-dimensional network structure. It is insoluble in water, but can absorb a large amount of water and swell significantly. It can maintain the original structure without being dissolved after the significant swelling. It is a collection of water absorption and water retention. , Sustained release in one functional material.
The principle is that a water-soluble polymer with a network cross-linked structure introduces a part of hydrophobic groups and hydrophilic residues. The hydrophilic groups combine with water molecules to connect the water molecules inside the network, while hydrophobic residues meet Water swells.
Polymer hydrogel has high water content, water absorption and release, energy storage and release, soft properties, and good biocompatibility. Therefore, it has a wide range of applications in various major industries.