Lebaka le leng ke hore matla a sebaka sa ho qhibiliha ka boeona a tlase haholo, a etsa hore libubble li thehe ho tsoa ka ntle;
Lebaka la bobeli ke hore ka lebaka la khatello e tlase e pota-potileng ho qhibiliha, li-bubble tsa sebaka seo li atoloha 'me matla a tsona a fokotsehile, a etsa li-bubble ho tsoa ka hare.Ts'ebetsong ea tlhahiso, ho batla ho se na phapang pakeng tsa mesebetsi e 'meli,' me ho ka etsahala hore ebe e teng ka nako e le 'ngoe.Bongata ba li-bubble li bakoa ke ho atoloha ho sa leka-lekaneng ha li-bubble tsa lehae, ho fella ka ho fokotseha ha matla a ho qhibiliha.
Ka kakaretso, tlhahiso ea li-bubble ka pampiri ea polasetiki e nang le foam e kenyelletsa lintlha tse latelang:
Tlhahiso ea boto ea foam ea PVC ka kakaretso e amohela lilaoli tse tharo tse fapaneng tsa PVC: mofuta oa ho futhumatsa, mofuta oa endothermic, kapa mofuta oa endothermic le exothermic composite equilibrium.Mocheso oa ho bola oa PVC foaming regulator o phahame, o fihla ho 232 ℃, o feta hole mocheso oa ho sebetsa oa PVC.Ha o e sebelisa, mocheso oa ho bola o hloka ho theoleloa.Ka hona, ha o laola ho phophoma ha thepa ea PVC, balaoli ba PVC ba foaming hangata ba khethoa.Mofuta ona oa taolo ea foaming o na le sekhahla se phahameng sa ho foka, hoo e ka bang 190-260ml/g, lebelo la ho bola ka potlako, le ho lokolloa ha mocheso o moholo.Leha ho le joalo, nako ea ho phophoma lekoeba e khutšoanyane ’me ka tšohanyetso le eona e matla.Ka hona, ha tekanyo ea "PVC foaming agent" e phahame haholo 'me moloko oa khase o le moholo haholo, o tla etsa hore khatello e ka hare ho bubble e eketsehe ka potlako, boholo ba bubble bo hōle haholo,' me khase e tla lokolloa ka potlako. ho baka tšenyo ea sebopeho sa bubble, kabo e sa lekanang ea boholo ba bubble, esita le sebopeho sa sebopeho sa sele se bulehileng, se tla hlahisa li-bubble tse kholo le li-voids sebakeng sa heno.Ha ho etsoa lihlahisoa tsa polasetiki tse phophomang, li-regulators tsa PVC tse phophomang ka matla ha lia lokela ho sebelisoa li le mong, empa li lokela ho sebelisoa hammoho le li-endothermic foaming agents kapa hammoho le mocheso le lisebelisoa tse leka-lekaneng tsa lik'hemik'hale tse foaming.Inorganic foaming agent - sodium bicarbonate (NaHCO3) ke endothermic foaming agent.Le hoja sekhahla sa ho phophoma ha leholiotsoana se le tlaase, nako ea ho phophoma ke nako e telele.Ha e kopantsoe le balaoli ba PVC ba foaming, e ka bapala karolo e tlatsetsang le e leka-lekaneng.The exothermic PVC foaming agent e ntlafatsa bokhoni ba ho hlahisa khase ea endothermic foaming agent, ha endothermic PVC foaming regulator e pholisa ea pele, e tsitsisa ho bola ha eona, 'me e leka-lekanya ho lokolloa ha khase, ho thibela ho senyeha ho feteletseng ho feteletseng ha lipoleiti tse teteaneng, ho fokotsa pula ea pula. masalla, le ho ba le phello e soeufetseng.
Boemong ba ho se ame sekhahla sa ho phophoma, ho loketse ho eketsa li-regulator tse ling tsa endothermic tsa PVC tse foaming ho nka sebaka sa li-exothermic foaming agents, e le ho hatella ho phatloha ho bakoang ke ho eketsa lisebelisoa tse ngata tse tsoang ho foaming.
Nako ea poso: May-13-2024
