The strength of polyurea elastomer prepared by amino-terminated polyether amine is high

2019-09-13 17:17:32

Amino-terminated polyether is a kind of polyurethane spraying material, which can react with isocyanate to form polyurethane because the amino group is located at the bond end of polyether macromolecule. Compared with general synthetic polyurethane, the amino-terminated polyether has the following advantages: (1) the reaction between amino compound and isocyanate is faster than that of hydroxyl group, and the reaction time can be shortened. (2) Polyurea produced by the reaction of amino compounds with isocyanate. The physical properties and heat resistance of the elastomer are much better than those of the existing similar polyurethane. It has excellent stability, durability and outdoor aging resistance. It is widely used in construction under high moisture and high humidity environment, and is welcomed by users.

At present, a series of polyurethane products synthesized by amino-terminated polyether have been developed and applied in China, such as coatings, filling adhesives, composite materials, filling adhesives, epoxy resin tougheners, etc. It is expected that with the rapid growth of national economy, a large number of amino-terminated polyurethanes will be consumed in construction, shipbuilding, urbanization and transportation industries. Material Science.

From the development status and history of polyether amine, the development cycle of polyether amine industry belongs to the initial stage, which has obvious characteristics of the initial stage. In this period, the market growth rate is higher, the demand growth is faster, and the technology changes are larger. The users in the industry are mainly committed to opening up new users and occupying the market. At this time, there is a lot of uncertainty in technology, and there is a lot of room in product, market, service and other strategies. There is not much information about industry characteristics, industry competition, user characteristics and so on.

Amino-terminated polyethers are a class of amino-terminated polyalkoxy olefins, which are mainly used for spraying polyurea elastomers, RIM products, epoxy resin curing agents and additives of engine fuel oil.

Polyurea elastomer made from amino-terminated polyether has high strength, high elongation, abrasion resistance, corrosion resistance and aging resistance. It is widely used in waterproof, anti-corrosion and anti-wear coatings on the surface of concrete and steel structures, and in the protection and decoration coatings of other components. It is a kind of high-performance polyurethane elastomer. The key technology is the synthesis of amino-terminated polyether. Amino-terminated polyether is also widely used as curing agent of epoxy resin, which can improve the toughness of products and is widely used in the manufacture of epoxy resin crafts.