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Preparation of epoxy systems: Resins and curing agents
Formulating Epoxy Systems: Resins and Curing Agents
When developing a single-component thermostastating system or two components of thermo-cured epoxy system, we often use resin systems to give it performance. For resins commonly designated as part A in two-component epoxy systems or used in single-component thermo-cured epoxy systems, we have the option of:
Bisphenol F resin
Bisphenol A resin
phenol varnish resin (Bisphenol A resin) Novolac resin
-fat cyclic epoxy resin
Multifunctional resinIn some formulations, these resins can be used alone or in combination with other resins to produce the best epoxy system.
curing agent
. Curing Agents
To help achieve the desired performance in a wide range of applications, Curing Agents can consider the following options when ddiscillating epoxy systems:
Lipamines
Polyamides
Cyclophaliatics
Aromatics Similarly, the
Lewis acidscan be combined in some formulations to achieve the desired effect .Multi-Function Group Epoxy Resin
Themal Curing of Multi-Functional Epoxy Resin
Multi-Function Group Epoxy Resin is known for its high glass transition temperature, high decomposition temperature, long-term high temperature performance and good wet strength performance.. S-510 with acid curing agent, the product Tg higher. With amine curing agent, weight loss rate is small, processing temperature can be lower. And the acid-and-saccharide system seems to have both effects.. The S-186 has two shrinking glycerides that are excellently bonded to carbon fiber and bond well even with unsophageed carbon fiber. It is usually available as a curing agent with interphenyls or liquid tethialfates (70 saccharides), with tg higher after curing.. The S-720/MHHPA system exhibits the largest Tg. After a long period of curing, the TGDDM/MHHPA system offers the best heat resistance.in view of the latest developments in tri-energy and four-role epoxy resins, we have begun to study the effectiveness of anhydride as a curing agent for these resins. As our work progresses, it reveals some of the properties that make these systems ideal for pre-immersion manufacturing, wire winding and extrusion molding.the initial steps of a very high ratio of epoxy to hydroxyl for multi-energy epoxy resins and are not prone to reaction. Therefore, as long as the use of low free acid, you can expect to have a longer applicable period. This is the unique properties of the acidic acid curing system, where highly reactive multi-performance resins have a longer life than many conventional epoxy resins.significant advantage of using liquid anhydrides is their ability to reduce the viscosity of the adhesive. Many multi-energy epoxy resins are viscous liquids or semi-solids. The use of low viscosity anhydrides (60-300 cps) at a ratio of approximately 1:1 significantly reduces the viscosity of the resin mixture and facilitates processing without the use of solvents or other anti-adhesives.high temperature performance of multi-performance resins and are harder at lower elongation rates. Curing shrinkage is significantly higher.
understood that Nantong New Naxi New Materials Co. , Ltd. focused on the production and sale of multi-official group epoxy resin has been more than ten years. The development of special epoxy resin provides the guarantee of raw materials for the development of new materials and military enterprises in China, and makes a certain contribution to the development of new materials in China to break the monopoly of large foreign companies. At the same time, the synthesis process of these special epoxy resins is developed by New Naxi, so this kind of project has a great competitive advantage in the market.
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