Characteristics and use of neoprene resin

Neoprene is polymerized from chloroprene and has a very good adhesion and strong cohesive force. Therefore, it can be made into a neoprene cement by using its strong cohesive force and the flexibility of rubber.

The film has the characteristics of ozone resistance, light resistance, heat resistance, oil resistance, flame resistance, flex resistance, aging resistance, water resistance and chemical resistance which are unmatched by other rubbers. The adhesive is widely used because it is easy to bond firmly.

Neoprene rubber can be divided into solvent type and latex type glue according to its manufacturing method and formula. The former is used more. The solvent-type adhesive has a particularly strong contact adhesion, as long as the glue is applied to the bonding surface, and after it is dried (about 10-30 minutes), the bonding surface is tightened, that is, the bonding is completed.

In order to improve the adhesive properties and heat resistance of the neoprene rubber, it can maintain the adhesive strength at 60-80 degrees Celsius. Therefore, it is often modified by adding a phenolic resin in the production. The most effective resin is t-butyl. A phenolic or amyl phenolic condensation resin that dissolves in neoprene to increase the cohesion of the neoprene at high temperatures. However, if it is added too much, the film will become hard and the flexibility will be poor.

Neoprene is soluble in benzene, toluene and xylene and a chloride solvent such as carbon tetrachloride.

Due to the aforementioned excellent properties, neoprene has the name of universal rubber, but it also has disadvantages such as poor cold resistance, large specific gravity, poor stability, and difficulty in preservation. It is widely used in the bonding of the metal, leather, fabric, plastic and wood processing industries.