Cov phom nyob rau hauv roj hmab txav mus rau saum npoo thiab crystallizes rau saum npoo, ib qho tshwm sim hu ua frosting.This tshwm sim rau ob qho tib si unvulcanized thiab vulcanized roj hmab. Thaum cov roj hmab unvulcanized sprayed nrog frost, lub adhesion ntawm roj hmab cov ntaub ntawv yuav nyuaj, ua rau yog tias cov tshuaj txau tawg yog tshwm sim loj heev, ua rau cov khoom siv moulded lossis txav pwm cov tshuaj rau cov khoom siv, cov tshuaj tua kab uas muag tau tawm hauv cov kab rov tav, yog li, yooj yim rau cov tsis muaj kua nplaum.Qhov no yog vim leej faj tsis dissolve nyob rau hauv lub roj hmab hauv ib lub sij hawm luv luv.Thaum thawj kev tiv thaiv kom tsis txhob frosting ntawm unvulcanized roj hmab yog txo cov sulfur cov ntsiab lus, tab sis tom qab txo cov sulfur cov ntsiab lus, lub elastic modulus ntawm vulcanized roj hmab yuav txo tag nrho, thiab lub hardness kuj yuav txo. Yog li ntawd, qhov txo ntawm leej faj nrog tus nqi ntawm kev ceev faj.
Yog tias cov mis sulfur tsis txo, qhov teeb meem yuav daws tau los ntawm kev ntxiv insuluble sulfur.Yog hais tias tag nrho cov mis sulfur tsis tau hloov nrog insoluble sulfur, ib nrab ntawm cov mis sulfur yuav hloov nrog insoluble sulfur.Qhov yuav luag achieves cov nyhuv yam.Qhov saum toj no yog muaj feem xyuam rau cov roj hmab uas rub tawm uas siv hauv cov zom zaws sab nraud. Sulfur, hauv particular, tsis tuaj yeem khaws ntev hauv cov pob txias, uas tuaj yeem ua kom tsis muaj zog thiab cov nyhuv ntawm cov tshuaj tsis muaj dej cawv.
Tom qab kev siv cov roj hmab tom qab lub sij hawm ntev los kuj yuav tshwm sim tau thaum lub sij hawm tseem yuav tshwm sim. Qhov kev ntsuas yuav tsum ua kom tiav, qhov teeb meem ntawm cov ntaub nplaum yuav tsum tau muab sau ua ntej npaj siab txo cov tshuaj lom neeg. ntev dua lub sij hawm ntev.Tiam sis nyob rau hauv txhua rooj plaub, kub kub ntev lub sij hawm vulcanization tsis haum.Rubber khoom yuav tsum tsis txhob mus ncaj qha tshav ntuj thiab ntse txias tom qab vulcanization thiab yuav tsum tau muab khaws cia rau hauv qhov chaw muaj cua nkag. Nyob rau hauv rooj plaub no, npog lub ntim nrog ib daim ntaub npog ua los ntawm hom ntoo, thiab lwm yam., los tiv thaiv frosting.Insoluble leej faj tsis ua haujlwm nyob rau hauv lub frosting uas tshwm sim tom qab vulcanization.
Tsis tas li ntawd, me ntsis sib txawv ntawm frosting, yuav muaj pom leej faj crystals thaum lub caij ntuj no rubber slurry, yog tias koj siv lub iav nto, koj tuaj yeem pom tseeb tias qhov no yog qee cov xim muaj ntau heev. Cov kua nplaum yuav nyob rau qhov kawg ntawm txhuam ntawm cov txhuam hniav, nyob rau hauv cov kua nplaum ntawm cov kua nplaum; thiab nrog rau lub tshuab ci rau gluing, nws yog nyob rau hauv cov hniav ntawm khawb riam ua daim crystallization, zoo li lub strip ntawm longitudinal kua nplaum.
Kev tiv thaiv kev ntsuas yog raws li: ntxiv cov phom hnyuv tsis sib tov sib npaug ntawm ib nrab ntawm cov tshuaj hnoos qis hauv cov phom sib tov, tsuas yog siv cov khoom yuav tsum tau siv los ntawm lub phom sij thaum siv cov tshuaj khib nyiab, thiab khaws cov khib nyiab tsis siv rau hauv lub thawv tshuaj, thiab maj mam do nws rau kev siv.