Production techniques of ethylene - propylene ternary regenerated foam sealing strip

   Epdm regenerated adhesive is resistant to high and low temperature, ozone resistance, anti-aging, the production of foam seal products sealing effect, stable performance, long service life, relatively low price, so welcomed by people. When using epdm recycled adhesive to produce foaming seal, what should be paid attention to? Following Chen hair hong small make up to specific understanding:

1. Sulfur vulcanization is selected as far as possible for the curing system of the foaming seal produced by ethylene propylene ternary (epdm) recycled adhesive, and the sulfur dosage is controlled at about 1.5-3 parts; The ethylene propylene ternary regenerated rubber rubber vulcanized by sulfur curing system has high tensile strength, good wear resistance, resistance to flexion and cracking, and is not easy to scorch; The hardness of the foam seal can also be adjusted by changing the amount of sulfur used.

2, the type and quality of foaming agent directly affect the performance of epdm foaming seal, in the selection of foaming agent, according to the foaming seal product needs to choose the appropriate foaming agent type, try to choose the foaming agent products with good chemical stability, easy to store; When using epdm recycled adhesive to produce environment-friendly foaming sealing strips, choose non-toxic and non-irritating foaming agent products in the production process to ensure that the sealing strips from raw materials to additives are non-toxic, tasteless and pollution-free; Foaming agent product decomposition rate to be fast, large volume of air, can be adjusted at any time, less heat generated during decomposition; The use of uniform particle size, easy to disperse spherical foaming agent, can be fully decomposed.

3. The quality of epdm recycled adhesive is the main factor that affects the performance of foaming sealing strip. Its selection can be said to be "infrastructure project" in the production of foaming sealing strip. If you want to use epdm recycled rubber to produce high-standard foaming sealing strips, on the basis of choosing high-quality epdm recycled rubber, add a certain amount of epdm raw rubber as far as possible to increase the amount of glue in the regular foaming sealing strip formula, and significantly improve the performance of epdm recycled rubber foaming sealing strips.