Izizathu zokubakho kwamaqamza ngexesha lokuxubha:
Isizathu sokuba amaqamza aveliswe ngexesha lenkqubo yokuxubai-epoxy resinIglue kukuba igesi engeniswa ngexesha lenkqubo yokuxukuxa ivelisa amaqamza. Esinye isizathu "yi-cavitation effect" ebangelwa lulwelo oluxukuxwa ngokukhawuleza kakhulu. Kukho iintlobo ezimbini zamaqamza: ezibonakalayo nezingabonakaliyo. Ukusebenzisa i-vacuum degassing kunokususa amaqamza abonakalayo kuphela, kodwa akusebenzi ekususeni amaqamza amancinci angabonakaliyo emehlweni omntu.
Izizathu zokuvela kwamaqamza ngexesha lokunyanga:
Oku kungenxa yokuba i-epoxy resin inyangwa yi-polymerization, eyi-chemical reaction. Ngexesha le-curing reaction, amaqamza amancinci kwinkqubo ye-epoxy resin ayafudumala kwaye ayanda, kwaye igesi ayisahambelani nenkqubo ye-epoxy, ize emva koko iqokelelene ndawonye ukuze ivelise amaqamza amakhulu.
Izizathu zokuvela kwe-epoxy resin foam:
(1) Iimpawu zekhemikhali ezingazinzanga
(2) Ukuxuba xa kulungiswa isithambisi
(3) Ukugqwala emva kokuqokelelwa kwezinto ezijiyileyo
(4) Inkqubo yokukhupha udaka
Iingozi zokugqwala kwe-epoxy resin ngexesha lokuxuba:
(1) Igwebu libangela ukugcwala kunye nokusetyenziswa kolusu oluqinileyo, nto leyo eya kuchaphazela nokuphakama kolwelo olubonwayo.
(2) Amaqamza abangelwa yi-curing agent molecular amines aya kuchaphazela ukusebenza kakuhle kolwakhiwo.
(3) Ukubakho “kwamaqamza amanzi” kuya kubangela i-VCM gas phase polymerization, edla ngokuveliswa kwiketile enamathelayo.
(4) Ukuba la maqamza awasuswanga ngokupheleleyo ngexesha lokwakhiwa, la maqamza aya kuveliswa emva kokuba enyibilikile, kwaye kuya kubakho imingxuma emininzi kumphezulu emva kokuba omile, nto leyo eya kuchaphazela kakhulu umgangatho wemveliso.
Indlela yokususa iibhamuza zomoya?
Iindidi zeemveliso zeearhente zokuxovula ezisetyenziswa rhoqo: iiarhente zokuxovula i-silicone, iiarhente zokuxovula i-non-silicone, iiarhente zokuxovula i-polyether, iiarhente zokuxovula i-oyile yeminerali, iiarhente zokuxovula i-alcohol ene-carbon ephezulu, njl.
Xa ubushushu buphantsi, iimpawu zezinto ezininzi ezingamanzi ziya kwenzeka utshintsho, ingakumbi i-viscosity yezinto ezingamanzi ezinamathelayo iya kwanda njengoko ubushushu buncipha.Iglu ye-epoxy resin ab, njengento eqhelekileyo yolwelo, inokunyuka okukhulu kwexabiso le-viscosity ngenxa yokwehla kobushushu. Ke ngoko, ngexesha lokusetyenziswa nokusetyenziswa, amaqamza kunzima ukuwasusa, ukusebenza kokuthamba kuyancitshiswa, kwaye ukwanda kwexesha lokusetyenziswa kunye nexesha lokunyanga akuhambisani nemveliso eqhelekileyo kunye nolawulo. Nangona kunjalo, ngokuqokelelwa kweminyaka emininzi yamava emveliso, sishwankathele amava aluncedo ukusombulula ngempumelelo kunye nokunciphisa iingxaki ezibangelwe ziingxaki ezingentla. Ngokukodwa, kukho ezi ndlela zine zilandelayo:
1. Indlela yokufudumeza indawo yomsebenzi:
Xa ubushushu kwindawo yokusebenza buhla bufikelela kwi-25°C, kufuneka ukufudumeza indawo yokusebenza ngokufanelekileyo ukuze kunyuswe ubushushu bufikelele kubushushu obufanelekileyo bokusebenzisa iglu (25°C ~ 30°C). Kwangaxeshanye, umswakama womoya kwindawo yokusebenza kufuneka ugcinwe kwi-70% okanye ngaphezulu, de ubushushu beglu bufane nobushushu obuphakathi ngaphambi kokuba iglu isebenze kwaye isetyenziswe ngokufanelekileyo.
Isikhumbuzo esifudumeleyo: Le ndlela yeyona ndlela isebenzayo, kodwa iindleko zokusebenza ziya kuba phezulu, nceda uqaphele ukubalwa kweendleko.
2. Indlela yokufudumeza amanzi abilayo:
Ukupholisa kuya kunciphisa ngokuthe ngqo ixabiso le-viscosityi-epoxy resinUkuyifutha kwangaphambili ngaphambi kokusebenzisa iglu kuya kwandisa ubushushu bayo kwaye kunciphise ixabiso le-viscosity, okwenza kube lula ukuyisebenzisa. Indlela ethile kukufaka yonke ibharele okanye ibhotile yeglu emanzini abilayo kwaye uyifudumeze malunga neeyure ezi-2 ngaphambi kokusebenzisa iglu, ukuze ubushushu beglu bufikelele malunga nama-30℃, uze uyikhuphe, uyishukumise kabini, uze ugcine iglue A kubushushu obungaphantsi kwama-30℃ emanzini afudumeleyo kwaye uyisebenzise ngelixa ufudumeza. Ngexesha lokusebenzisa, khupha iglue kwaye uyishukumise rhoqo emva kwesiqingatha seyure ukuze ugcine ubushushu kunye nokwakheka kweglue kuhambelana. Kodwa lumka ngakumbi ukuba iglue ekwibhakethi okanye ebhotileni inamathele emanzini, kungenjalo iya kukhokelela kwimiphumo emibi okanye emibi.
Isikhumbuzo esifudumeleyo: Le ndlela ilula, iyabiza kwaye iyasebenza, kwaye iindleko kunye nezixhobo zilula kakhulu. Nangona kunjalo, kukho iingozi ezifihlakeleyo, ekufuneka ziqwalaselwe.
3. Indlela yokufudumeza i-oven:
Abasebenzisi abanezi meko bangasebenzisa i-epoxy resin ab ukufudumeza iglu e-oven ngaphambi kokusebenzisa iglu ukuze baphephe ukudibana namanzi ngengozi. Kulula kakhulu. Indlela ethile kukulungisa ubushushu be-oven ukuya kuma-60°C, uze ufake yonke ibherele okanye ibhotile yeglue ye-A e-oven ukuze uyifudumeze kwangaphambili, ukuze ubushushu beglu ngokwayo bufikelele kuma-30°C, uze ukhuphe iglu uyishukumise kabini, uze ufake iglu kubushushu be-Adjust to 30°C embindini we-oven usebenzisa imiphetho eshushu, kodwa lumka ukhuphe iglu kwaye uyishukumise malunga neyure ukuze iglu ihlale igcina ubushushu obulinganayo nezithako.
Isikhumbuzo esifudumeleyo: Le ndlela iya kunyusa iindleko kancinci, kodwa ilula kwaye iyasebenza.
4. Indlela yokuncedisa iarhente yokucoca inkunkuma:
Ukuze ukhawulezise ukususwa kwamaqamza ngokulinganiselayo, ungathenga iarhente ekhethekileyo yokucola i-epoxy resin ab-added glue, kwaye wongeze iglue engu-A enomlinganiselo we-3‰ ngaphakathi, indlela ethile; ungangezi ngokuthe ngqo iglue engaphezulu kwe-3% kwiglue engu-A eshushu ngendlela engentla. Iarhente ekhethekileyo yokucola i-ejentiiglu ye-epoxy resin AB, uze uxube ngokulinganayo uze udibanise neglue ye-B ukuze uyisebenzise.
I-Shanghai Orisen New Material Technology Co., Ltd
M: +86 18683776368 (kwakhona ne-whatsapp)
Ucingo:+86 08383990499
Email: grahamjin@jhcomposites.com
Idilesi: NO.398 New Green Road Xinbang Town Isithili saseSongjiang, eShanghai
Ixesha leposi: Jan-07-2025