Uhlalutyo lwe-FAQ ye-adhesive ye-silicone yeSakhiwo seZibini

Iimpawu ezimbini ze-silicone ze-Structural sealants ziphezulu ngamandla, zikwazi ukuthwala imithwalo emikhulu, kwaye zixhathisa ukuguga, ukudinwa, kunye nokubola, kwaye zisebenza ngokuzinzile kwixesha elilindelekileyo lokuphila.Ziyafaneleka kwi-adhesives ezimelana nokudityaniswa kweendawo zesakhiwo.Isetyenziselwa ikakhulu ukudibanisa isinyithi, iiseramikhi, iiplastiki, irabha, iinkuni kunye nezinye izinto zohlobo olufanayo okanye phakathi kweentlobo ezahlukeneyo zemathiriyeli, kwaye inokutshintsha ngokuyinxenye iifom zoqhagamshelo lwemveli ezifana nokuwelda, ukukhwela nokubopha.
I-Silicone structural sealant yinto ephambili esetyenziswa kwiindonga zeglasi ezifihliweyo ngokupheleleyo okanye ezifihliweyo.Ngokudibanisa iipleyiti kunye nezakhelo zetsimbi, ziyakwazi ukumelana nemithwalo yomoya kunye neglasi yomthwalo we-self-weight weight, ehambelana ngokuthe ngqo nokuqina kunye nokhuseleko lwezakhiwo zodonga lwamakhethini.Enye yeekhonkco eziphambili zokhuseleko lwamakhethini eglasi.
Sisitywina solwakhiwo esine-linear polysiloxane njengeyona nto iphambili ekrwada.Ngethuba lenkqubo yokunyanga, i-agent e-crosslinking isabela kunye ne-polymer yesiseko ukwenza izinto ezi-elastic kunye ne-network-dimensional network structure.Ngenxa yokuba i-Si-O yamandla ebhondi kwi-molecular structure ye-rubber ye-silicone inkulu kakhulu kwiibhondi zeekhemikhali eziqhelekileyo (Si- O iimpawu ezithile zomzimba kunye neekhemikhali: ubude bobhondi 0.164 ± 0.003nm, amandla okuchithwa kwe-thermal 460.5J / mol. (ezifana ne-polyurethane, i-acrylic, i-polysulfide sealant, njl.), Ukuxhathisa kwe-UV kunye nokuchasana Ikhono lokuguga emoyeni linamandla, kwaye alikwazi ukugcina iintanda kunye nokonakala iminyaka engama-30 kwiindawo ezahlukeneyo zemozulu.Ine-± 50% yokuchasana nokuguqulwa kunye nokufuduka kwindawo ebanzi yokushisa.Nangona kunjalo, ngokunyuka kokusetyenziswa kwe-silicone structural sealants, iingxaki ezahlukeneyo ziya kubonakala kwizicelo eziphathekayo, ezifana: i-particle agglomeration kunye ne-pulverization yecandelo B, ulwahlulo kunye ne-stratification yecandelo B, ukunyanzeliswa kweplate ayikwazi ukucinezelwa phantsi okanye iglue. Iguquliwe, isantya sokuphuma kweglu kumatshini weglu siyacotha, iglu yephepha lebhabhathane inamasuntswana, ixesha lokumisa umphezulu likhawuleza kakhulu okanye licotha kakhulu, iglu ibonakala ilusu okanye ivulcanization, kwaye "iglue yeentyatyambo" ibonakala ngexesha leglu. ukwenza inkqubo.", i-colloid ayinakunyangwa ngokuqhelekileyo, izandla ezincangathi emva kweentsuku ezimbalwa zokunyanga, ukuqina akuqhelekanga emva kokunyangwa, kukho iimbobo ezifana nenaliti kumphezulu wokudibanisa kunye ne-substrate, amaqamza omoya avaleleke kwi-silicone sealant, ukudibanisa kakubi. kunye ne-substrate, ukungahambelani nezixhobo, njl.
Uhlalutyo lwe-2.FAQ ye-adhesive ye-silicone yeSakhiwo seZibini
2.1 Inxalenye ye-B ine-particle agglomeration kunye ne-pulverization
Ukuba i-particle agglomeration kunye ne-pulverization yecandelo B kwenzeka, kukho izizathu ezibini: esinye sesokuba le nto yenzekile kumaleko aphezulu ngaphambi kokusetyenziswa, okubangelwa ukutywinwa okungahambi kakuhle kwephakheji, kunye ne-arhente yokudibanisa okanye i-agent edibeneyo icandelo B yiKhompawundi esebenzayo, ichaphazeleka kukufuma emoyeni, le bhetshi kufuneka ibuyiselwe kumenzi.Okwesibini kukuba umatshini uvaliwe ngexesha lokusetyenziswa, kwaye i-particle agglomeration kunye ne-pulverization yenzeke xa umatshini uvuliwe kwakhona, ebonisa ukuba itywina phakathi kweplate yoxinzelelo lomatshini weglue kunye nezinto zerubha azilungile, kunye nezixhobo. kufuneka kuqhagamshelwane naye ukusombulula ingxaki.
2.2 Isantya somatshini weglue siyacotha
Xa imveliso isetyenziselwa okokuqala, isantya sokuphuma kweglue kumatshini wegluing sicotha kakhulu ngexesha lenkqubo yegluing.Kukho izizathu ezithathu ezinokuthi zibekho: ⑴ icandelo A linolwelo olulambathayo, ⑵ ipleyiti yoxinzelelo inkulu kakhulu, kwaye ⑶ uxinzelelo lomthombo womoya awonelanga.
Xa kunqunywe ukuba sisizathu sokuqala okanye isizathu sesithathu, sinokuyicombulula ngokulungisa uxinzelelo lwe-glue gun;xa kugqitywe ukuba sisizathu sesibini, uku-odola umgqomo ngecaliber ehambelanayo kunokusombulula ingxaki.Ukuba isantya sokuphuma kweglue sinciphisa ngexesha lokusetyenziswa okuqhelekileyo, mhlawumbi i-core yokuxuba kunye nesikrini sokucoca sivaliwe.Sakuba sifunyenwe, isixhobo kufuneka sicocwe kwangethuba.
2.3 Ixesha lokutsalwa likhawuleza kakhulu okanye licotha kakhulu
Ixesha lokuqhawula i-adhesive yesakhiwo libhekisela kwixesha elithathayo ukuba i-colloid itshintshe ukusuka kwi-paste ukuya kwi-elastic body emva kokuxuba, kwaye ngokuqhelekileyo ivavanywa rhoqo ngemizuzu emi-5.Kukho izinto ezintathu ezichaphazela ukomisa kunye nokunyangwa kwendawo yerubha: (1) impembelelo yecandelo le-A kunye ne-B, njl.;(2) ubushushu kunye nokufuma (impembelelo yobushushu yeyona nto iphambili);(3) ifomula yemveliso ngokwayo inesiphene.
Isisombululo kwisizathu (1) kukulungelelanisa umlinganiselo.Ukwandisa umlinganiselo wecandelo B kunokunciphisa ixesha lokunyanga kwaye wenze i-adhesive layer ilukhuni kwaye i-brittle;ngelixa ukunciphisa umyinge we-ejenti yokunyanga kuya kwandisa ixesha lokunyanga, i-adhesive layer iya kuba thambileyo, ukuqina kuya kwandiswa kwaye amandla aya kwandiswa.nciphisa.
Ngokubanzi, umlinganiselo wevolumu wecandelo A:B unokuhlengahlengiswa phakathi kwe-(9～13:1).Ukuba umlinganiselo wecandelo B uphezulu, isantya sokusabela siya kukhawuleza kwaye ixesha lokuqhawula liya kuba lifutshane.Ukuba impendulo ikhawuleza kakhulu, ixesha lokucheba kunye nokumisa umpu liya kuchaphazeleka.Ukuba icotha kakhulu, iya kuchaphazela ixesha lokumisa kwe-colloid.Ixesha lokuqhawula ngokuqhelekileyo lihlengahlengiswa phakathi kwe-20 kunye ne-60 imizuzu.Ukusebenza kwe-colloid emva kokunyanga kolu luhlu lomlinganiselo ngokusisiseko kuyafana.Ukongezelela, xa izinga lokushisa lokwakha liphezulu kakhulu okanye liphantsi kakhulu, sinokunciphisa ngokufanelekileyo okanye ukwandise umlinganiselo wecandelo B (i-agent ephilisayo), ukuze kufezekiswe injongo yokulungelelanisa ukomiswa komphezulu kunye nexesha lokuphilisa i-colloid.Ukuba kukho ingxaki kwimveliso ngokwayo, imveliso kufuneka itshintshwe.
2.4 "I-Flower glue" ibonakala kwinkqubo ye-gluing
I-flower gum iveliswa ngenxa yokuxuba okungalinganiyo kwee-colloids ze-A/B components, kwaye ibonakala njengebala elimhlophe lendawo.Ezona zizathu ziphambili zezi: ⑴Umbhobho wecandelo B lomatshini weglu uvalekile;⑵Umxube omileyo awucocwanga ixesha elide;⑶ Isikali sikhululekile kwaye isantya seglue asilingani;Inokusombululwa ngokucoca izixhobo;ngesizathu (3), kufuneka ukhangele umlawuli olinganiselayo kwaye wenze uhlengahlengiso olufanelekileyo.
2.5 Ukulusu okanye ukukrala kwe-colloid ngexesha lenkqubo yokwenza iglue
Xa i-adhesive-component component iphiliswa ngokuyinxenye ngexesha lokuxuba, iglue eveliswa ngumpu weglue iya kubonakala i-skin okanye i-vulcanization.Xa kungekho nto ingaqhelekanga kwisantya sokunyanga kunye nokuphuma kweglue, kodwa iglue isagqunyiwe okanye ivuthwe, mhlawumbi isixhobo sivaliwe ixesha elide, umpu weglue awuzange uhlambuluke okanye umpu awukho. ihlanjululwe ngokucokisekileyo, kwaye i-crust okanye iglue vulcanized idinga ukuhlanjululwa.Ukwakhiwa emva kokucoca.
2.6 Kukho amaqamza omoya kwi-silicone sealant
Ngokuqhelekileyo, i-colloid ngokwayo ayinamaqamza omoya, kwaye amaqamza omoya akwi-colloid anokuthi axutywe nomoya ngexesha lothutho okanye ulwakhiwo, njengale: ⑴Umbhobho awucocwa xa kutshintshwa umbhobho werabha;⑵Amalungu acinezelwa kwipleyiti emva kokufakwa kumatshini Angacinezelwa ezantsi, nto leyo ekhokelela ekuphulweni kwamagwebu okungaphelelanga.Ngoko ke, i-foam kufuneka isuswe ngokucokisekileyo ngaphambi kokusetyenziswa, kwaye umatshini weglue kufuneka usebenze ngokuchanekileyo ngexesha lokusetyenziswa ukuqinisekisa ukutywinwa kunye nokukhusela umoya ukuba ungene.
2.7 Ukubambelela kakubi kwi-substrate
I-Sealant ayilona i-adhesive yendalo yonke, ngoko ayinakuqinisekiswa ukuba idibanise kakuhle kunye nazo zonke ii-substrates kwizicelo eziphathekayo.Ngokwahluka kweendlela zonyango zomphezulu we-substrate kunye neenkqubo ezintsha, isantya se-bonding kunye nesiphumo se-bonding sealants kunye ne-substrates nazo zahlukile.
Kukho iindlela ezintathu zomonakalo kwi-interface yokudibanisa phakathi kwe-adhesive yesakhiwo kunye ne-substrate.Omnye ngumonakalo odibeneyo, oko kukuthi, amandla adibeneyo > amandla adibeneyo;enye i-bond umonakalo, oko kukuthi, amandla adibeneyo < amandla adibeneyo.Indawo yomonakalo we-junction engaphantsi okanye elingana ne-20% ifanelekile, kwaye indawo yomonakalo webhondi edlula i-20% ayifanelekanga;indawo yomonakalo webhondi edlula i-20% yinto engathandekiyo kwizicelo eziphathekayo.Kusenokubakho ezi zizathu zintandathu zilandelayo zokuba kutheni i-adhesive yesakhiwo ingabambeleli kwi-substrate:
⑴ I-substrate ngokwayo kunzima ukuyidibanisa, njenge-PP kunye ne-PE.Ngenxa yekristale ephezulu yemolekyuli kunye noxinzelelo oluphantsi komhlaba, abanako ukwenza i-molecular chain diffusion kunye ne-entanglement kunye nezinto ezininzi, ngoko ke abanako ukwenza ibhondi eyomeleleyo kwi-interface.Ukuncamathela;
⑵ Uluhlu oludityanisiweyo lwemveliso lumxinwa, kwaye lunokusebenza kuphela kwezinye iindawo;
⑶ ixesha lokulondoloza alanelanga.Ngokuqhelekileyo, i-adhesive-component ye-structural adhesive kufuneka iphiliswe ubuncinane iintsuku ezi-3, ngelixa i-adhesive-component-component kufuneka ihlanjululwe iintsuku ezi-7.Ukuba ubushushu kunye nokufuma kwendawo yokunyanga kuphantsi, ixesha lokunyanga kufuneka landiswe.
⑷ Umlinganiselo wamacandelo A no-B awulunganga.Xa usebenzisa iimveliso zamacandelo amabini, umsebenzisi kufuneka alandele ngokungqongqo umlinganiselo ofunwa ngumenzi ukulungelelanisa umlinganiselo weglue esisiseko kunye ne-ejenti yokuphilisa, kungenjalo iingxaki zinokuthi zenzeke kwisigaba sokuqala sokunyanga, okanye kwisigaba esilandelayo sokusetyenziswa ngokwemigaqo yonyango. ukuncamathela, ukumelana nemozulu kunye nokuqina.umbuzo;
⑸ Ukungaphumeleli ukucoca i-substrate njengoko kufuneka.Ekubeni uthuli, ukungcola kunye nokungcola ebusweni be-substrate kuya kuthintela ukudibanisa, kufuneka kuhlambuluke ngokungqongqo ngaphambi kokusetyenziswa ukuqinisekisa ukuba i-adhesive yesakhiwo kunye ne-substrate idibene kakuhle.
⑹ Ukungaphumeleli ukusebenzisa i-primer njengoko kufuneka.I-primer isetyenziselwa ukulungiswa kwangaphambili kwiprofayili ye-aluminium, enokuphucula ukuxhathisa kwamanzi kunye nokuqina kwebhondi ngelixa linciphisa ixesha lokudibanisa.Ke ngoko, kwizicelo zobunjineli bokwenyani, kufuneka sisebenzise i-primer ngokuchanekileyo kwaye sikuphephe ngokungqongqo ukudegum okubangelwa ziindlela zokusetyenziswa ngokungafanelekanga.
2.8 Ukungahambelani nezincedisi
Isizathu sokungahambelani nezincedisi kukuba i-sealant inomsebenzi womzimba okanye wekhemikhali kunye nezixhobo ezidibeneyo, ezikhokelela kwiingozi ezifana nokuguqulwa kombala we-adhesive yesakhiwo, ukunganamatheli kwi-substrate, ukuthotywa kokusebenza kwe-adhesive yesakhiwo. , kunye nobomi obufutshane be-adhesive yesakhiwo.
3. Isiphelo
I-adhesive ye-silicone yesakhiwo inamandla aphezulu, uzinzo oluphezulu, ukumelana nokuguga okugqwesileyo, ukuxhathisa ubushushu obuphezulu kunye nezinye iipropathi ezigqwesileyo, kwaye isetyenziswa ngokubanzi ekudibaneni kolwakhiwo lweendonga zamakhethini.Nangona kunjalo, kwizicelo ezisebenzayo, ngenxa yezizathu zomntu kunye neengxaki zesiseko esikhethiweyo (iinkcukacha zokwakha azikwazi ukulandelwa ngokungqongqo), ukusebenza kwe-adhesive yesakhiwo kuchaphazeleka kakhulu, kwaye nokuba kungasebenzi.Ke ngoko, uvavanyo lokuhambelana kunye novavanyo lokunamathela kweglasi, izinto ze-aluminium kunye nezixhobo kufuneka zihlolwe ngaphambi kokwakhiwa, kwaye iimfuno zekhonkco ngalinye kufuneka zilandelwe ngokungqongqo ngexesha lenkqubo yokwakha, ukuze kufezekiswe isiphumo sokuncamathelisa kwesakhiwo kunye nokuqinisekisa umgangatho we-adhesive. iprojekthi.