The physical and mechanical properties and chemical properties of epoxy resin-Iota

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Service > The physical and mechanical properties and chemical properties of epoxy resin

The physical and mechanical properties and chemical properties of epoxy resin

(1) high mechanical properties. Epoxy resin has a very strong cohesion, molecular structure compact, so its mechanical properties than that of phenolic resin and unsaturated polyester common thermosetting resin.
(2) strong adhesion. In the epoxy resin curing system containing active great epoxy, hydroxy and ether bond, ester, amine bond bond of polar groups, give epoxy curing compounds on metal, ceramic, glass, concrete, wood and other polar materials with excellent adhesion.
(3) small shrinkage ratio. Generally 1% ~ 2%. Is one of the smallest variety rate of curing the thermosetting resin shrinkage (phenolic resin 8% ~ 10%; unsaturated polyester resin 4% ~ 6%; silicone resin 4% ~ 8%). Linear expansion coefficient is also small, generally 6 * 10-5/ C. So little volume change after curing.
(4) good technology. Epoxy resin curing generated substantially low molecular volatile, so low pressure molding or contact pressure molding. With a variety of curing agents with manufacturing solvent free, high solid, powder coating and waterborne coating and other environmentally friendly coatings.
(5) excellent electrical insulation good. Epoxy resin is one of the best varieties of electric properties of thermosetting resin intermediary.
(6) good stability, excellent chemical resistance. Epoxy resin not containing alkali, salt and other impurities not easy metamorphism. If stored properly (seal, not damp, not when the temperature), the storage period of 1 years. If overtime after passing inspection can use. Epoxy hardener with excellent chemical stability. The performance of alkaline and acid, salt and other corrosive medium is better than that of the unsaturated polyester resin, phenolic resin thermosetting resin. Therefore, epoxy resin used as a large number of anti-corrosion primer, and because of the cured epoxy resin impregnated a three-dimensional net structure, and capabilities such as oil, used in a large number of oil tank, oil tankers, aircraft integral tank inner wall lining etc..
(7) the heat resistance of epoxy. Generally 80 ~ 100 DEG C. Epoxy resin heat-resistant varieties can reach 200 DEG C or higher.

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