Unsaturated polyester resins more up-to-date application

Author: admin    NewsSource: Site author    Hits:     Updated: 8/10/2009

Unsaturated polyester resin in addition to the typical, traditional, are there any new application deserves our attention? On the new fluorine-containing unsaturated polyester-imide resin and insulating material, the experts said the continuous development of industrial electrical insulating materials of a higher demand. Unsaturated polyester in maintaining the excellent performance of the processing technology at the same time, how to improve the heat-resistant unsaturated polyester, and mechanical properties of unsaturated polyester to improve the dimensional stability, resistance, chemical corrosion, moisture absorption, and improve the environment unsaturated polyester affinity is an important research direction. Chinese Academy of Sciences, Institute of Chemistry, Laboratory of high-tech materials were synthesized with the structure of a new type of imine monomer diols (BTGTB), two sub-acid intermediates (BTTB), and a new type of oxygen system unsaturated polyester imide resin. The results show that the unsaturated polyester in maintaining good processing properties at the same time, the molecular chain of unsaturated polyester-imide structure of the introduction paragraph, not only increased the unsaturated polyester of the heat resistance, mechanical properties, electrical properties, and chemical corrosion, imide structure and high content of unsaturated polyester-imide resin with outstanding heat resistance.

 On the road marking paint. State Road Marking Coatings late start, the pace of development than the man. China is currently used in road marking paints mainly, at room temperature solvent-based coatings and two kinds of hot-melt. At room temperature for melting-type road marking paint containing a large number of organic solvents and low solid content of the shortcomings of Communications Department, Bureau of Shandong Province and Jinan University Materials Science and Engineering, to reflect the styrene monomer as the solvent, waste polystyrene is not unsaturated polyester resin as the main film-forming material, with other materials, etc. lead to an environment-friendly system for a road marking paint. Monomer in the film when the polymerization of small molecules involved in basically no "three wastes" discharge, is an environment-friendly paint. By orthogonal analysis and electron microscope photographs, discussed the factors that affect the coating adhesion, the coatings obtained with the construction of convenient, affordable coating thickness, adhesion, and the advantages of climate adaptability. The coating can be adjusted in accordance with the viscosity and curing time for the prepolymer at the construction site, direct painting, film-forming system solvent when the monomer involved in response to a very small amount of volatile, hot-melt coatings have fast dry film, solid - high coating thickness moderate road conditions and climate of the advantages of adaptability.

 

 In addition the use of paint waste polystyrene plastic material for one film, not only reduces the cost of paint, but also for the waste polystyrene plastics to provide a means of recycling. Have good economic and social benefits. Resin anchorage agent applications are also expanding. Resin anchor production in China has been the use of coal for 20 years, with the amount of resin bolt applications increasing scope of its applications are expanding. Performance on the anchor agents also have new demands, in the past have resin anchorage agent at room temperature and low temperature applications (-20 ~ 40) conducted a systematic study of certain high-temperature conditions of the local coal mining, the need for the use of resin bolting little research. Resin bolt anchorage agent by the resin and metal body is composed of two parts. Solve the problem of heat-resistant resin bolt main purpose is to raise anchor resin after the heat curing agent problem. Key agent in the anchor is to improve the curing of unsaturated polyester resin after the heat-resistant temperature. Anchoring the curing agent is a kind of cross-linking polymerization, in order to increase the unsaturated polyester resin high temperature performance, from the point of view of molecular design, it should be from the following three aspects: the introduction in the molecular structure of a good heat resistance Shannon ring; the introduction of high thermal stability of cross-linked groups; increase the crosslinking density.