New chemical materials urgently need to pass the technological hurdle

Global Coatings Network News:

As the country vigorously promotes the development of the new chemical material industry, the enthusiasm of the majority of new material enterprises in technological innovation has been stimulated, and a series of profound changes have taken place in terms of technological level, innovation ability, and industrial scale.

He also pointed out that in terms of synthetic fibers, it is necessary to focus on breakthroughs in domestic general-purpose carbon fiber polymerization, spinning, and carbonization industrial production stability technologies, to achieve independent development of key equipment and automatic production control; to solve the problem of domestic para-aramid high-purity terephthalate Formyl chloride raw material preparation technology, solvent recovery and desalination technology during the polymerization process, as well as the new technology of bisspirin polymerization; development of high-strength and M series high-modulus carbon fibers above T800, heterocyclic aramid (tensile strength greater than 4.
5GPa) preparation technology and high-strength high-modulus polymerization Industrialized technology of imide fiber (tensile strength greater than 3.
8GPa).

In terms of synthetic rubber, the industry should develop new bio-based rubber technologies, such as green, efficient and low-cost dandelion rubber extraction technology and equipment, dandelion rubber processing and application technology, and eucommia gum high-efficiency and low-cost extraction technology, and high-quality eucommia gum Use technology, etc.

Keep up with the frontier to seize the high point

While overcoming shortcomings of technology, the industry must keep abreast of the international frontiers and seize a batch of commanding heights.
Li Shousheng pointed out that the new chemical materials industry should strive to form a group of internationally leading core technologies with independent intellectual property rights.
The industry should increase R&D investment and transformation of scientific and technological achievements, strengthen theoretical and basic research, and vigorously develop high-performance engineering plastics such as polysulfone, polyphenylsulfone, polyether ether ketone, and liquid crystal polymers, as well as electronic special gas and electronic grade wet Chemicals, photoresist, electronic paper and other high-end electronic chemicals, strengthen the research and development and application research of graphene materials and 3D printing materials.

Zheng Baoshan, deputy dean of the Petroleum and Chemical Industry Planning Institute, said that in terms of electronic chemicals, we must strive to seize the technological high point, develop products in the four fields of integrated circuits, flat panel displays, new energy batteries, and printed circuit boards, and accelerate the variety of products.
Replacement and quality upgrade to meet the needs of upgrading electronic products.
In particular, it is necessary to focus on the development of PPB-level and PPT-level high-purity reagents for integrated circuits, electronic gases of 5N and above, DUV and EUV-level photoresists, and TFT liquid crystal materials, OLED light-emitting materials, and TFTs for flat panel displays.
-Optical film materials such as polarizer for LCD and raw materials such as TAC film and PVA film.

In addition, high-performance electronic chemicals supporting the new generation of power lithium batteries must also be produced on a large scale, such as high specific energy and high voltage cathode materials, high-capacity silicon-based anode materials, doped coatings and new lithium battery separators, high voltage, Wide-temperature, flame-retardant, long-circulation electrolyte, etc.

New type of polyethylene glycol-based hydrogel developed by the Institute of Chemistry

Recently, the research group of Wu Decheng researcher of the Institute of Chemistry of the Chinese Academy of Sciences and the research group of Peifu Tang, the director of the Department of Orthopedics of the Chinese People's Liberation Army General Hospital, jointly developed a four-arm polyethylene glycol medical sealant (SS) based on the succinyl ester structure.
It can be used to solve the problem of hemostasis in patients with oral anticoagulants after orthopedics or interventional operations.

The hydrogel has rapid gel formation, strong tissue adhesion and high mechanical strength, which is better than the currently reported polyethylene glycol hydrogels and fibrin glues.
More importantly, compared with the traditional glutaryl ester-based four-arm polyethylene glycol gel (SG), the SS sealant can quickly degrade.
Subcutaneous and muscle implant experiments have proved that SS has excellent biocompatibility and will not cause long-term foreign body reactions.
Due to its excellent degradability and biocompatibility, this new type of SS sealant can promote wound healing faster than traditional SG gel and gauze without causing side reactions.

The new polyethylene glycol-based hydrogel has excellent hemostatic properties and safety.
It can be used for anticoagulant bleeding that cannot be stopped by fibrin glue, and is expected to be a simple, effective and safe sealant for traumatic in vivo hemostasis.

WeChat public account