Sonke siyazi ukuba iimveliso zeplastiki zihlala zinezinga lokuhla, kwaye liyancipha xa liphantsi.Iimveliso ezenziwe kwizinto ezahlukeneyo zinemilinganiselo yokunciphisa i-shrinkage.Apha, sixoxa ngezinto ezininzi eziphembelela ukucutheka kwemigqomo yeplastiki ngexesha lesigaba sokuvelisa.Enyanisweni, kwimveliso, ukuba ufuna ukuba ubungakanani bemveliso bufaneleke ngakumbi, kuyanceda ukuqonda izinto ezichaphazela ukucutha.Emva kwayo yonke loo nto, kumzi mveliso wezinto zokwenziwa kwemizi-mveliso, izikhongozeli zemveliso zeplastiki zidla ngokuba zizikhongozeli ezisemgangathweni.Ubungakanani bayo kunye neenkcukacha zayo zichanekile ngokomgangatho, kwaye akukho kutenxa.Ngaphandle koko, akunakutshiwo ukuba i-generalization isemgangathweni.
Inkqubo yokubumba yeibhokisi yokutshintsha iplastikikukubumba thermoplastic.Ngenxa yokuguqulwa komthamo ngexesha lenkqubo yokuvelisa kwinkqubo ye-crystallization, uxinzelelo lwangaphakathi lukhulu kakhulu, kwaye kukho uxinzelelo olushiyekileyo ngaphakathi kwemveliso yokubumba, kwaye i-molecular orientation inamandla kakhulu.Ke ngoko, inezinga eliphezulu lokucutheka kuneemveliso zeplastiki ze-thermosetting.Inoluhlu olukhulu lokufinyezwa kunye nesalathiso esicacileyo kakhulu.Kuba umaleko wangaphandle wemathiriyeli etyhidiweyo idibane nomphezulu womgodi wokungunda ngexesha lenxalenye yeplastiki ebunjiweyo, ipholiswa ngoko nangoko ukwenza iqokobhe eliqinileyo elinoxinaniso olusezantsi.Kwaye sonke siyazi ukuba i-thermal conductivity yeplastiki ihlupheke kakhulu, kwaye umaleko wangaphakathi webhokisi yokuguqulwa kweplastiki uphola ngokucothayo, usenza umaleko oqinileyo ophezulu kunye nesantya esikhulu sokushwabana.Ukuba ubukhulu bodonga buyacotha, umgangatho ophezulu woxinaniso uya kuqina kwaye uya kuncipha ngakumbi.
Inkqubo yokubumba yeibhokisi yokutshintsha iplastikikukubumba thermoplastic.Ngenxa yokuguqulwa komthamo ngexesha lenkqubo yokuvelisa kwinkqubo ye-crystallization, uxinzelelo lwangaphakathi lukhulu kakhulu, kwaye kukho uxinzelelo olushiyekileyo ngaphakathi kwemveliso yokubumba, kwaye i-molecular orientation inamandla kakhulu.Ke ngoko, inezinga eliphezulu lokucutheka kuneemveliso zeplastiki ze-thermosetting.Inoluhlu olukhulu lokufinyezwa kunye nesalathiso esicacileyo kakhulu.Kuba umaleko wangaphandle wemathiriyeli etyhidiweyo idibane nomphezulu womgodi wokungunda ngexesha lenxalenye yeplastiki ebunjiweyo, ipholiswa ngoko nangoko ukwenza iqokobhe eliqinileyo elinoxinaniso olusezantsi.Kwaye sonke siyazi ukuba i-thermal conductivity yeplastiki ihlupheke kakhulu, kwaye umaleko wangaphakathi webhokisi yokuguqulwa kweplastiki uphola ngokucothayo, usenza umaleko oqinileyo ophezulu kunye nesantya esikhulu sokushwabana.Ukuba ubukhulu bodonga buyacotha, umgangatho ophezulu woxinaniso uya kuqina kwaye uya kuncipha ngakumbi.
Izibuko lokutya kohlobo lwezixhobo zokuvelisa'ubungakanani bokuhanjiswa kwezinto ekrwada kunye nezinye izinto ziya kuchaphazela ngokuthe ngqo ulwalathiso lokuhamba, ukuhanjiswa kwezinto zoxinaniso lwemveliso, ukucutha koxinzelelo loxinzelelo kunye nexesha lokubumba, ngokungangqalanga kuchaphazela isantya sokucutheka.ibhokisi yokutshintsha iplastiki.Xa isixhobo sinokungena ngokuthe ngqo, icandelo le-inlet cross likhulu kakhulu, ngakumbi xa likhudlwana, izinga lokunciphisa liya kuba lincinci kodwa lihamba phambili.Ngokwahlukileyo, xa ubungakanani be-inlet buncinci, isalathiso sokunciphisa sincinci, kwaye isantya se-shrinkage sikhulu xa i-inlet isondelene ne-inlet okanye ihambelana nolwalathiso lokuhamba.
Iimeko zokubumba imveliso zinempembelelo enkulu kwisantya sokuncipha kweibhokisi yokutshintsha iplastiki.Umzekelo, ukuba iqondo lobushushu lokungunda liphezulu kwaye izinto ezinyibilikisiweyo ziyacotha, kukho ukuxinana okuphezulu kwaye izinga lokucutheka liya kuba likhulu ngokwentelekiso.I-crystalline material ine-crystallinity ephezulu kunye nomthamo omkhulu, ngoko izinga lokunciphisa liba likhulu.Ukuhanjiswa kweqondo lokushisa lokubunjwa kunye neqondo lokupholisa langaphakathi nangaphandle kunye nokulingana koxinaniso lwamacandelo eplastiki kuya kuchaphazela ngokuthe ngqo izinga lokunciphisa kunye nolwalathiso lwenxalenye nganye yemveliso.Ubungakanani boxinzelelo logcino kunye nobude bexesha lokugcinwa kwakhona kunempembelelo enkulu kwizinga lokunciphisa.Xa uxinzelelo luphezulu kwaye lude, izinga lokunciphisa lincinci, kodwa ulwalathiso lukhulu.Ngexesha lenkqubo yokubumba, izinga lokucutheka kwebhokisi yeplastiki yokuguqula inokutshintshwa ngokufanelekileyo ngokuhlengahlengisa ubushushu bomngundo kunye nesantya senaliti yoxinzelelo kunye nexesha lokupholisa.Ngokwalapha ngasentla, sinokumisela izinga lokucutheka kwenxalenye nganye yemveliso ngokwebhokisi yeplastiki yenguquko yeplastiki ukushwabana kodonga ukutyeba imilo ifidi yokungena imilo kunye nobukhulu nokusasazwa koyilo lokungunda, uze ubale umngxuma.Ngokwereyithi yokwenyani yokucutheka kwemveliso, tshintsha ukungunda kwaye utshintshe iimeko zokubumba inaliti ukuze ulungise izinga lokucutheka kwemveliso ukuhlangabezana neemfuno ezizizo.
Ixesha lokuposa: Nov-25-2022