Sisiphi isizathu sokuchithwa kwiqokobhe elenziwe ngesanti yeglasi yamanzi ngexesha lenkqubo yokubumba utyalo-mali?

Kutyalo-mali (ukuphosa iwax elahlekileyo), xa usebenzisa inkqubo yokwenza iqokobhe lesanti yeglasi yamanzi, iqokobhe lesanti i-delamination (ukuxobula iqokobhe) sesinye seziphene eziqhelekileyo, ezinokuthi zikhokelele kumphezulu orhabaxa, i-burrs, kunye nokwaphuka kwesakhiwo sokusatywa. Ezi zilandelayo zizizathu ezinokwenzeka kunye nezisombululo:

1. Uhlalutyo lwezizathu eziphambili

(1) Ingxaki yokunamathela kweglasi yamanzi kukuba i-modulus yeglasi yamanzi (SiO ₂ / Na ₂ O ratio) ayifanelekanga. Imodyuli iphezulu kakhulu (>3.2): iqina ngokukhawuleza kakhulu, iqokobhe liyaqaqadeka, kwaye lithanda ukuqhekeka kunye ne-delamination. Imodulus iphantsi kakhulu (<2.6): ukuqina kancinci, amandla angonelanga, ukudityaniswa kwe-interlayer kakubi. Uxinaniso olungafanelekanga lweglasi yamanzi (>1.40g/cm ³) lukhokelela ekungeneni okulambathayo kunye nokungangeni ngokwaneleyo komgangatho ongezantsi; Ukuba ukuxinana kuphantsi kakhulu (<1.28g/cm ³), amandla okudibanisa awanelanga.

(2) Inkqubo yokuqina engafanelekanga, ukugxininiswa okwaneleyo okanye ixesha le-ejenti yokuqina (NH ₄ Cl okanye i-CO ₂), ukuqina okungagqibekanga, i-glass yeglasi yamanzi eseleyo engaphendulwanga ngaphakathi kwegobolondo, i-shrinkage kunye ne-delamination emva kokumisa. Ixesha le-CO ₂ lokungenisa umoya lide kakhulu okanye uxinzelelo luphezulu kakhulu. Umphezulu womelele ngokugqithisileyo, kwaye umaleko wangaphakathi awuqini, wenza "iqokobhe elilukhuni elithambileyo" isakhiwo.

(3) Xa isanti itshizwe ngokungalinganiyo okanye ubungakanani besuntswana lesanti unikezelo lungekho ngqiqweni kumsebenzi wokwenziwa kweqokobhe, kwaye umyinge wesanti erhabaxa (efana ne-20-40 mesh) iphezulu kakhulu, ukuthungelana koomatshini phakathi kweeleya kubuthathaka. Xa kukho isanti ecolekileyo kakhulu (efana ne-70-100 mesh), ukunyanzeliswa kubi kwaye igesi eqinile ayikwazi ukungena. Ukomisa okungonelanga kwe-interlayer kubangela ukuba umaleko olandelayo ugqunywe ngaphambi kokuba umaleko wangaphambili womiswe ngokupheleleyo, okukhokelela ekunciphiseni kokubambelela ngenxa yokufuma okushiyekileyo.

4 Xa iqondo lobushushu lisezantsi kakhulu (<15 ℃), izinga lokusabela lukhuni liyancipha kwaye i-interlayer bonding ayiqini.

(5) Ukungcoliswa kwezinto eziphathekayo ze-wax molds kunye ne-residual release agents (ezifana neoli ye-silicone) okanye uthuli lunokuchaphazela ukudibanisa phakathi kweglasi yamanzi kunye neengqungquthela zesanti.

2. Isisombululo

(1) Lungiselela iiparamitha zeglasi yamanzi kwaye ulungelelanise imodyuli kwi-2.8-3.0 (ngokongeza i-NaOH okanye i-silica sol). Lawula uxinano phakathi kwe-1.30-1.36g/cm ³ (hlambulula okanye ugxininise ngamanzi). (2) Ukulinganisa inkqubo yokuqina kunye ne-NH ₄ Cl i-concentration yesisombululo sokuqina kwe-20-25% kunye nexesha lokucwina le-5-10 imizuzu. I-CO ₂ ukuqina: uxinzelelo lwe-0.1-0.2MPa, ixesha lokungenisa umoya i-30-60 imizuzwana (ukulungiswa ngokobunzima begobolondo).

(3) Phucula ukuhlelwa kwesanti ukuze kwenziwe umsebenzi wokwenza iqokobhe: sebenzisa isanti erhabaxa (20-40 mesh) kumaleko asezantsi, isanti ephakathi (40-70 mesh) kumaleko otshintsho, kunye nesanti ecolekileyo (70-100 mesh) kumaleko angaphezulu. Ukomiswa kwe-Interlayer: Emva kokuba uluhlu ngalunye lufakwe, kufuneka lomiswe ngokwendalo kwiiyure ezingama-2-4 (okanye ukunyanzeliswa kwe-ventilation drying).

(4) Ubushushu bemo engqongileyo yolawulo: gcina i-20-25 ℃, ukufuma ≤ 60%. Ukucoca i-wax mold: Sebenzisa utywala okanye ii-agent ezikhethekileyo zokucoca ukususa ngokucokisekileyo i-arhente yokukhulula.

(5) Amanye amanyathelo abandakanya ukongeza ii-agent zokuqinisa: ukongeza i-1-2% i-agent yokudibanisa i-silane (njenge-KH550) kwiglasi yamanzi ukuphucula i-interlayer adhesion. Ukuqina okwesibini: Emva kokuba iqokobhe lenziwe, lintywiliselwa ngokupheleleyo kwisisombululo sokuqina sokuqinisa.

3. Inkqubo yophando lwesiphene

1. Jonga indawo yokuma: ukwahlula umaleko womphezulu kunye nomaleko wenguqu → ukucocwa kokungunda kwewax okanye ingxaki yamasuntswana esanti. Ukwahlula umaleko wenguqu kunye nomaleko ongasemva → inkqubo yokuqina okanye imiba yokuhlelwa kwesanti.

2. Ukuvavanya amandla eqokobhe: Sebenzisa umvavanyi wobulukhuni ukulinganisa ubulukhuni bomaleko ngamnye, kwaye ulungelelanise iiparitha zokuqina xa umehluko mkhulu kune-15%.

3. Ukuqwalasela i-morphology yamacandelo anqamlezileyo: amasuntswana entlabathi amaninzi ayawa → ukuncamathela okwaneleyo; Umnqamlezo ogudileyo → ukuqina okungonelanga.

4. Isiphakamiso senkqubo engenye: Ukuba i-delamination iyenzeka ngokuphindaphindiweyo, isisombululo esilandelayo sinokuqwalaselwa: i-silica sol yamanzi igobolondo edibeneyo yeglasi: i-silica sol yomgangatho ophezulu (ukuchaneka okuphezulu), kunye neglasi yamanzi kwi-back layer (ixabiso eliphantsi).

Yonke inkqubo ye-silica sol: Umngcipheko ophantsi we-delamination, kodwa ixabiso eliphezulu. Ngokuhlenga-hlengisa izinto, inkqubo, kunye neeparamitha zokusingqongileyo, ingxaki ye-delamination kwiigobolondo zesanti yeglasi yamanzi inokusombulula ngempumelelo. Cebisa ukwenza imifuniselo emincinci ukuqinisekisa isicwangciso sokuphucula kuqala.