Ukunyanzeliswa kwesantya sokuguqulwa kwesigxina sesona sitshixo sibaluleke kakhulu ukumisela ubomi betywina, okanye isalathisi "se-veto".
Singasebenzisa isifaniso esicacileyo ukuze siqonde: itywina lifana nentwasahlobo ethembekileyo.Injongo yayo ephambili kukusebenzisa ngokuqhubekayo kwaye ngokuzinzileyo i-rebound force (uxinzelelo loqhagamshelwano) kwindawo yangaphandle xa ixinzelelwe (ifakwe kwi-groove). La mandla abuyelayo acinezela ngokuqinileyo kumphezulu wokutywina, ukuthintela ukuvuza kwendawo ephakathi (ioyile, amanzi, igesi, njl.njl.).
Isizathu esithe ngqo sokungaphumeleli: xa "intwasahlobo" idiniwe kwaye ikhulile, ayinakuphinda ibuyele, kwaye ingcinezelo esetyenzisiweyo iyancipha ngaphantsi kwendawo ebalulekileyo, isitywina asiphumeleli.
Ukunyanzeliswa kwesantya sokuguqulwa kwesigxina sisalathisi esilinganisa ngokuthe ngqo ukulahleka kwesakhono se "spring" rebound.
Kutheni sisi "master key"?
1. Umgaqo osisiseko wokutywinwa ngokuthe ngqo
Ingundoqo yokutywinwa kukuba uxinzelelo loqhagamshelwano ludlula uxinzelelo oluveliswa yi-medium. Ukuba izinga lokuguqulwa kwesigxina sokunyanzeliswa liphezulu kakhulu, ilungu lokutywinwa alikwazi ukubuyisela isimo salo sokuqala emva kokutshatyalaliswa, kwaye uxinzelelo loqhagamshelwano olubangelwayo luya kuhla ngokukhawuleza. Xa olu xinzelelo luphantsi kunoxinzelelo oluphakathi lwe-medium evaliweyo, ukuvuza kuya kwenzeka.
2. “Yingxelo yoviwo olubanzi lwenyama” yokuguga kwezinto
Ukunyanzeliswa kwesantya sokuguqulwa okusisigxina akukona ukusebenza okuzimeleyo, kodwa ukubonakaliswa okugxininisiweyo komonakalo osisigxina wesakhiwo sangaphakathi sezinto eziphathekayo phantsi kwesenzo sokushisa, i-oksijeni, i-medium, ixesha kunye nezinye izinto. Isizathu sokunyuka kwezinga lokuguqulwa kwakhona ngoyena nobangela uphambili wokutywina ukwaluphala:
Ukuqhekeka kwe-polymer chain kunye ne-crosslinking: Ngaphantsi kwesenzo sokushisa okuphezulu kunye ne-oksijini, i-molecular chain ye-rubber iya kuphuka (ibangele ukuthambisa kunye nokunamathela) okanye i-crosslinking egqithisileyo (ekhokelela ekuqinisweni kunye nokuqina), zombini ezo ziya kutshabalalisa uthungelwano lwayo olulastiki kwaye luyenze ukuba ilahlekelwe amandla ayo okubuyela emva.
I-vaporization okanye i-leaching ye-plasticizers / softeners: Xa izitywina zibonakaliswe kwi-oyile okanye kwimidiya yekhemikhali ixesha elide, iiplastiki ezincinci zinokuthi zikhutshwe okanye zibe ngumphunga. Oku kufana nentlama elahlekelwa ngumswakama, eyenza ibe nzima, iyancipha, kwaye ilahlekelwe ukuqina.
Utshintsho lweekhemikhali ezingenakulungiseka: Ezinye iirubha ziya kuhlangabezana neekhemikhali ezingenakulungiseka phantsi kweemeko ezithile (ezifana "nokubuyiswa" kwerabha ye-silicone phantsi komphunga wobushushu obuphezulu), ezonakalisa ngokusisigxina ukuqina kwazo.
Ngoko ke, umlinganiselo wezinga lokuguqulwa koxinzelelo olusisigxina ngokwenene lukulinganisa kunye nokukhawuleza kwenkqubo yokuguga kwetywina phantsi kweemeko zokusebenza zangempela, kwaye ulinganise ukulahlekelwa kweyona nto isebenzayo (i-elasticity).
3. Ixela kwangaphambili isiphelo sobomi bokutywinwa
Kwiisetingi zelabhoratri, singacwangcisa ixesha-iqondo lobushushu leejiko zemathiriyeli ngokulinganisa ucinezelo lwazo loguquko olusisigxina phantsi kobushushu obahlukeneyo kunye nobude. Ukusebenzisa iimodeli ezifana ne-equation ye-Arrhenius, sinokukhupha ixesha elifunekayo kwisantya sokunyanzeliswa kwesigxina sokunciphisa ukufikelela kwinqanaba lokungaphumeleli kumaqondo okushisa aqhelekileyo okusebenza, ngaloo ndlela siqikelela ubomi benkonzo yethiyori yamatywina.