| 摘要 |
PURPOSE: A paste type joint sealing composition for soundproofing is provided. Whereby, it becomes possible to automatize manufacturing process and use in common as kinds of automobiles and their parts, and absorbing recuperative power, foaming rate, sound absorbing rate, and stability are more excellent compared to existing patch type joint sealing composition for soundproofing. CONSTITUTION: A paste type joint sealing composition for soundproofing comprises ethylene-propylene-dienemonomer(EPDM) rubber 20-25wt.%, liquid isoprene rubber(IR) 28-32wt.%, and 1,2-butadiene rubber 10-15wt.% as basic polymers, filler 17-23wt.%, hardener 2-3wt.%, foaming agent 4-6wt.%, and additives 4-7wt.% selected out of antioxidant, ultraviolet rays stabilizer, heat stabilizer, carbon black, and process oil. |
