The invention discloses a weighted, hardened, open-cell EPDM rubber blended molded multi-stage high-magnification foaming cushion material, comprising the following components in parts by weight: 100 parts of EPDM, 20–30 parts of reinforcing agent, 50–60 parts of auxiliary reinforcing agent, 80–100 parts of structural stabilizer, 8–10 parts of softener, 5–8 parts of thermal stabilizer, 2–5 parts of active agent, 3–5 parts of crosslinking agent, 1.5–3 parts of auxiliary crosslinking agent, 1.5–2 parts of accelerator, 1–2 parts of auxiliary accelerator, 12–15 parts of foaming agent and 1.5–3 parts of auxiliary foaming agent. The material and its preparation method effectively solve the problems of easy bubbling during high-temperature foaming of EPDM, conflicts between hardness/density improvement and high foaming ratio, as well as contradictions between water absorption and high foaming ratio. The prepared foaming cushion has moderate density, high tensile strength, high elongation at break, low compression set, excellent resilience and ultra-low water absorption, achieving a key technical breakthrough in manufacturing high-magnification foamed products.
Area Code: CN
Application Number: CN201911394203.2
