Okwu Mmalite na ụfụfụ ebe nchekwa

Foam ebe nchekwa bụ ụdị ụfụfụ na-arụ ọrụ nke polyurethane na ihe ndị ọzọ polymer, nke nwere mmetụta okpomọkụ na njirimara nlọghachi ngwa ngwa. NASA bu ụzọ mepụta ihe a n'afọ ndị 1960 maka ịma jijiji n'oche ụgbọ elu, ma mesịa gbasaa ruo n'ogige ahụike na arịa ụlọ, nke a na-ejikarị na ngwaahịa dịka matraasi na ohiri isi. Usoro nkwadebe gụnyere nnukwu -okpomọkụ na elu- usoro ịfụfụ nrụgide site na iji akụrụngwa polyurethane na ihe mgbakwunye kemịkalụ, na-enweta mgbasa nrụgide na nrapado ahụ site na nhazi nke porous.

Jiri aka gị pịa elu dị larịị nke sponge ebe nchekwa ahụ, akara aka ga-apụta, wee jiri nwayọọ nwayọọ pụọ. Nke a bụ mmetụta akara ngosi nke sponge ebe nchekwa - "slow rebound", nke na-esiri ihe ndị ọzọ ike iṅomi ọsọ nlọghachi ngwa ngwa.

Ihe ụfụfụ ebe nchekwa nwere ike ịgbanwe ịdị nro na ike siri ike dịka okpomọkụ si dị. Ọ ga-eji nwayọọ nwayọọ na-adị nro ka okpomọkụ na-abawanye. Mgbe ahụ mmadụ batara na ụfụfụ ebe nchekwa, ọ ga-ahụ ọnọdụ okpomọkụ nke ahụ mmadụ, na-adị nro, ma na-amịkọrọkwa nrụgide nke ahụ mmadụ. Ya mere, akwa akwa na ohiri isi nke ihe nchekwa ụfụfụ na-eme ka ọ dị elu na ahụ mmadụ.