Impembelelo ye-vulcanization kwisakhiwo kunye neempawu:
Kwinkqubo yokuvelisa iimveliso zerabha, i-vulcanization linyathelo lokugqibela lokucubungula.Kule nkqubo, irabha ifumana uthotho lweekhemikhali ezintsonkothileyo, itshintsha ukusuka kwisakhiwo somgca ukuya kwisakhiwo esinomzimba, ilahlekelwe yiplastiki yerabha exubeneyo kunye nokuba nomgangatho ophezulu werabha edityaniswe ngokunqamlezileyo, ngaloo ndlela ifumana umzimba kunye noomatshini. iipropati, ukumelana nobushushu Ukusebenza, ukuchasana kwe-solvent kunye nokumelana nokubola kuphucula ixabiso lokusetyenziswa kunye noluhlu lwesicelo seemveliso zerabha.
Ngaphambi kwe-vulcanization: ubume bomgca, ukusebenzisana kwe-intermolecular ngu-van der Waals force;
Iipropati: iplastiki enkulu, ubude obuphezulu, kunye nokunyibilika;
Ngexesha le-vulcanization: i-molecule iqaliswe, kwaye i-chemical cross-linking reaction reaction iyenzeka;
Emva kwe-vulcanization: isakhiwo senethiwekhi, i-intermolecular kunye neebhondi zamakhemikhali;
Ulwakhiwo:
(1) Ibhondi yeMichiza;
(2) Isikhundla sebhondi edibeneyo;
(3) Iqondo lokuxhumanisa;
(4) Ukudityaniswa;.
Iinkcazelo ngeempawu:
(1) Iimpawu zoomatshini (ukomelela kobude obuthe rhoqo. Ukuqina. Amandla okuqina. Ukolula. Ukolula);
(2) Iimpawu zomzimba
(3) Ukuzinza kweekhemikhali emva kokutshatyalaliswa kwe-vulcanization;
Utshintsho kwiimpawu zerabha:
Ukuthatha irabha yendalo njengomzekelo, ngokunyuka kweqondo le-vulcanization;
(1) Utshintsho kwiimpawu zoomatshini (i-elasticity. Amandla okukrazuka. Amandla obude. Amandla okukrazula. Ukuqina) ukwanda (ubude. Ukusetha ucinezelo. Ukudinwa ukuvelisa ubushushu) kuncipha
(2) Utshintsho kwiimpawu ezibonakalayo, ukunyanzeliswa komoya kunye nokunciphisa ukunyanzeliswa kwamanzi, akukwazi ukunyibilika, ukudumba kuphela, ukuphucula ukumelana nobushushu.
(3) Utshintsho kwi-chemical stability
Ukunyuka ukuzinza kweekhemikhali, izizathu
a.I-cross-linking reaction yenza ukuba amaqela asebenze ngemichiza okanye ii-athomu zingabikho, nto leyo eyenza kube nzima ukuqhubeka nokwaluphala.
b.Ubume bothungelwano buthintela ukusasazwa kweemolekyuli ezisezantsi, nto leyo eyenza kube nzima ukuba irabha radicals isasazeke.
Ukukhethwa kunye nokuMiswa kweeMeko ze-Rubber Vulcanization
1. Uxinzelelo lwe-Vulcanization
(1) Uxinzelelo kufuneka lusetyenziswe xa iimveliso zerabha zihlanjululwe.Injongo kuku:
a.Ukuthintela irabha ekuveliseni amaqamza kunye nokuphucula ukuxinana kwerabha;
b.Yenza i-rubber material flow kwaye ugcwalise isikhunta ukwenza iimveliso ngeepatheni ezicacileyo
c.Ukuphucula ukuncamathela phakathi umaleko ngamnye (incamathelisa umaleko kunye umaleko ilaphu okanye umaleko wesinyithi, umaleko ilaphu kunye umaleko ilaphu) kwimveliso, nokuphucula iimpawu zomzimba (ezifana ukumelana flexural) ye vulcanizate.
(2) Ngokuqhelekileyo, ukhetho loxinzelelo lwe-vulcanization kufuneka lunqunywe ngokohlobo lwemveliso, ifomula, iplastiki kunye nezinye izinto.
(3) Ngokomgaqo, le migaqo ilandelayo kufuneka ilandelwe: iplastiki inkulu, uxinzelelo kufuneka lube luncinci;ubukhulu bemveliso, inani leengqimba, kunye nesakhiwo esiyinkimbinkimbi kufuneka sibe sikhulu;uxinzelelo lweemveliso ezincinci kufuneka zibe ncinci, kwaye noxinzelelo oluqhelekileyo lunokusetyenziswa
Kukho iindlela ezininzi ze-vulcanization kunye noxinzelelo:
(1) Impompo yehydraulic idlulisela uxinzelelo kumngundo ngevulcanizer ecaba, kwaye emva koko idlulisele uxinzelelo kwikhompawundi yerabha ukusuka kubumba.
(2) Icinezelwe ngokuthe ngqo yi-vulcanizing medium (efana nomphunga)
(3) Ukunyanzeliswa ngumoya ocinezelweyo
(4) Isitofu ngomatshini wokutofa
2. Ubushushu beVulcanization kunye nexesha lokunyanga
Ubushushu be-vulcanization yeyona meko isisiseko kwi-vulcanization reaction.Ubushushu be-vulcanization bunokuchaphazela ngokuthe ngqo isantya se-vulcanization, umgangatho wemveliso kunye neenzuzo zezoqoqosho zeshishini.Ubushushu be-vulcanization buphezulu, isantya se-vulcanization sikhawuleza, kunye nokusebenza kakuhle kwemveliso kuphezulu;ngaphandle koko, ukusebenza kakuhle kwemveliso kuphantsi.
Ukwandisa ubushushu be-vulcanization kunokubangela ezi ngxaki zilandelayo;
(1) Ibangela ukuqhekeka kwetsheyini yerabha yemolekyuli kunye nokuguqulwa kwe-vulcanization, okukhokelela ekunciphiseni kweempawu zomatshini wekhompawundi yerabha.
(2) Ukunciphisa amandla eendwangu kwiimveliso zerabha
(3) Ixesha elitshisayo le-rubber compound lifutshane, ixesha lokuzaliswa liyancitshiswa, kwaye imveliso iyancipha inxalenye yeglue.
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Ixesha lokuposa: May-18-2022