Nyanzvi dzakawanda dzinoita muR&D kana kudzora kwemhando vangangosangana nenyaya iyi pakuita ongororo yemhando yepamusoro (IQC). Mushure mekuiongorora kaviri, ndinotenda kuti inoda kuongororwa kwakadzama.
“Kuratidzira” kunorevei? Zvinoreva here kunzwikwa kwayo panguva yekuvakwa kana kusimba remagetsi mushure mekurapa kwekupedzisira?
Chii chakasiyana? 5% kana 50%?
Pasina miganhu yehuwandu uye chaiwo mamiriro ekushandisa, mubvunzo uyu haugone kupindurwa nekungoti "hongu" kana "kwete." Naizvozvo, isu tichaenderera zvakananga kubva kune injiniya maonero kuti tinyatso ongorora nyaya ye "glue viscosity variation." Chatinofanira kuongorora ndechekuti musiyano uyu unobva mukutsauswa kwemaitiro ekuyedza kana kuchinja-chinja kwezvinhu{2}}uye kuti kuchinja kwakadaro kungakonzeresa kutadza kudii pamutsetse wekugadzira.
01 Hunhu hweViscosity
Asi kana tikatora maonero akasiyana uye tikafunga nezve microscopic yenyika yemapolymers, viscosity inzira ine simba zvakanyanya. Iyo viscosity yezvinhu zvepolymer inomuka kubva kuzvinhu zviviri: chekutanga, kupindirana kwechipiri pakati pecheni dzemamorekuru (kusanganisira van der Waals mauto, mabhondi ehydrogen, uye kunyangwe nguva dzepakarepo dipole dzinobva kubva kune isingaenzaniswi erekitironi gore rekugovera); chechipiri, kukochekera kwemuviri kuri muchikamu chakareba-chetani dzemapolymer, anoita sedandemutande rakamonereka rakarukwa munzvimbo yose. Kana tikashandisa simba guru-sekupinza kwevharuvhu kana simba rekugera paviscometer rotor-kukurudzira kuyerera, tinenge tichitoita basa rekukunda izvi zvinokwezva magineti emagetsi uye kutyora mapfundo iwayo.
Iyo "internal friction force" inogadzirwa neiyi molecular cheni panguva yekutsvedza ndiyo macroscopic kuratidzwa kwe viscosity. Naizvozvo, viscosity haisi yega parameter yeglue asi inoratidzira yakazara yemaitiro ayo mamorekuru uye kupindirana kwepakati.
Izvi zvinotsanangurawo kuti sei viscosity ichinyanya kutarisisa kumamiriro akaita setembiricha, shear rate, uye nguva-sezvo maparamita aya achinyatso chinja mafambiro emamorekuru uye kubatwa kwawo.
02 Kurerekera kwedata kunowanzobva mukusarongeka kwemiganhu yebvunzo.
Tichidzokera kumubvunzo wemumwe waunoshanda naye, iwo mabheji maviri ekunamira anoratidza maviscosity akasiyana. Tisati tafungira hurema hwezvinhu, tinofanira kutanga tabvisa kupindira kwemaitiro ekuyedza. Sezvo mvura zhinji dzepolymer dzisiri-zvinwiwa zveNewtonian, dzinoisa miganho inoomesesa pakuyedzwa.
Hukama hweexponential pakati petembiricha uye kufamba kwezvikamu zvepolymer cheni kunotevera exponential pateni (maererano neArrhenius empirical law). Muzviitiko zvakawanda, tembiricha yepakati yenzvimbo yekunamatira yekuchengetera i20 degree, nepo ambient tembiricha yekamuri yekuyedza i25 degree.
Kana sampuli ikasaiswa pachiyero chakaringana chekupisa mukugezesa kunogara kuchipisa mushure mesampling (iyo inowanzoda anopfuura maminetsi makumi matatu), data yakayerwa icharatidza kutsauka kwakakosha. Kuchinja kwekushisa kwe1℃kunogona kukonzera shanduko ye viscosity ye5% kusvika ku10%.
Shear Rate: Mazhinji emhando yekudzora maitiro anotarisisa kuenderana kweiyo rotor modhi uye yekutenderera kumhanya kana uchienzanisa mabhechi. Zvinwiwa zvepolymer zvinoratidza hunhu hwe "kugera-kutetepa maitiro."
Iyo yakakwirira yekumhanya kwekutenderera, iyo yakakura iyo nhanho iyo molecular cheni inotungamirwa nechisimba uye isina maronda, zvichikonzera yakaderera kuyerwa kunooneka viscosity. Zvakanyanya kukosha, kana uchiongorora mvura isiri-yeNewtonian fluid, viscosity poindi pakutenderera kamwe chete haina zvazvinoreva; chinoda kufananidzwa "shear stress-viscosity curves" inowanikwa pamitengo yakasiyana yekugera.
Nguva (Thixotropy): Mune masisitimu ane thixotropic agents akadai sefumed silica, hydrogen bond network inoumba mukati ichizorora (zvichikonzera kukwirisa viscosity), uku network iyi ichivhiringwa pasi peshear stress (inotungamira kune yakaderera viscosity).
Izvi zvakangofanana nekuita kuti vanhu vaviri vakwikwidze mumujaho we100-mujaho wemamita: mumwe achangopedza kudziya-uye ane hutano hwakanaka, asi mumwe akatomhanya mijaho mishanu yakatevedzana uye chimiro chavo hachisati chapora vasati vaedza wechitanhatu. Musiyano wakaonekwa mumibairo yekupedzisira ungasaratidza misiyano chaiyo mukugona asi unogona kungobva mukusiyana kwe-mamiriro avo ebvunzo. Kana nguva isati yasvika{{7}yekucheka kana nguva yekuzorora ikasiyana pakati pemabheji maviri emasamples isati yaedzwa, kuverenga kunongosiyana. Nokudaro, zvakakosha kuti utaure zvakajeka usati waedza kuti nguva yekucheka-cheka inofanira kuva yakareba sei uye kuti ndeipi nguva zviyero zvinofanira kutorwa. Pasina kurongeka kwakakodzera nguva, iyo data haigone kuenzaniswa zvinobudirira.
03 Chii chinoumba mutsauko unokosha unganzi hausi wenguva dzose? Zvingakanganisa chigadzirwa rini?
Izvo zvinofanirwa kutanga zvabvumwa kuti iyo polymerization process pachayo haina kurongeka, zvichiita kuti zvisaite kuti ude zvakakwana yunifomu yemamolekyulu uremu kugovera pamabatch ese ekunamira.
Zvakajairwa maindasitiri maratidziro anoratidza kuti viscosity kuchinja mukati me ± 10% kusvika ± 15% inowira mukati meyakajairwa kushivirira miganhu.
Kana kutsauka kuchipfuura 20%–30%, kungwarira kunodiwa-izvi zvinoratidza zvingangoitika nebase resin batch kana kupararira kusina kuenzana kwethixotrop. Kutsauka kwakadaro kungakonzera migumisiro yei?
Zvinoenderana nehwindo rako rekuita. Kana ukaisa adhesive nemaoko kana kuti semi{1}otomatiki, musiyano we20% muviscosity unogona kukanganisa maonerwo emushandisi wemagadzirirwo asi hazvikonzeri kusimba kwe bond yekupedzisira.
Kune otomatiki mitsara yekuparadzira, shanduko mune viscosity inokanganisa zvakananga huwandu hwekunamira hwakaiswa. Pasi pekudzvinyirirwa kwakafanana uye mamiriro enguva, high viscosity inogona kudzivirira kunamatira kubva pakuyerera zvakanaka kana kukonzera tambo; low viscosity inogona kutungamira mukudonha kana kupararira kusingatarisirwe kwekunamira. Izvi zvinogona kukanganisa rhythm yekugadzira. Chinhu chakakosha chiri mune chaiyo interface wetting.
Kuwedzera viscosity kunoderedza kuyerera, kudzivirira chinonamira kuti chisanyatsopinda mukati memicro{{0}kukasharara pamusoro pe substrate. Ichiri kuoneka pane application, akawanda microscopic voids aripo pane iyo interface. Pasi pekushushikana, njodzi yeinterface delamination inokwira zvakanyanya. Ad: WorkBuddy AI Office Assistant - shandisa-mahara uye wakagadzirira-kushandisa-kushandisa. Edza WorkBuddy izvozvi. Uyezve, kuumbwa kwebubble kunogona kuitika. Kuwedzera kupenya kunoderedza kuyerera, kudzivirira chinonamira kuti chisanyatsopinda mukati memicro{10}yakakasharara yepasi. Ichiri kuoneka pane application, akawanda microscopic voids aripo pane iyo interface. Pasi pekushushikana, njodzi yeinterface delamination inokwira zvakanyanya. Ad: WorkBuddy AI Office Assistant - shandisa{{14}mahara uye wakagadzirira--kushandisa. Edza WorkBuddy izvozvi. Uyezve, kuumbwa kwebubble kunogona kuitika.
Kana iyo viscosity yeadhesive yekuzadza ichiwedzera, ma microbubbles akaiswa panguva yekukurudzira kana kuzadza anove akaoma kubvisa. Kunyangwe pasi pevacuum condition, yakakwirira-viscosity masisitimu anowanzo kuteya mabhuru aya. Pakupora, mabubbles aya anobva ashanduka kuita stress, izvo pakukwira-voltage magetsi emagetsi anogona kutungamira pakubuda kana kuparara.
[Engineering-Based Decision{{1}Making Approach] Heino nhanho nhatu-hwaro hwehuinjiniya-hwakavakirwa kutonga:
1. Chekutanga, simbisa kana kupesana kuri kwechokwadi
Mabheji maviri emasampuli akayerwa panguva imwe chete achishandisa viscometer imwe chete, rotor, kumhanya kwekutenderera, tembiricha, pamwe nekuzorora kwakafanana uye nguva yekugera. Kana mutsauko uri pasi pe15%, ingangove yakajairika musiyano. Kana musiyano unopfuura 20%, kumwe kuongorora kunofanira kuitwa.
2. Zvino ngatitarisei zvakare pahwindo rako rekuita
Bvunza pamutsetse wekugadzira: tarisa iyo yazvino mhepo yekumanikidza, nguva yekushandisa, dhayamita yetsono yemidziyo yekuparadzira, uye inogamuchirwa viscosity renji.
Semuyenzaniso, kana mudziyo wako ukagara uchigadzira anonamira mukati meiyo viscosity renji ye ± 15%, kusiyana kwebatch hakukanganise kuita. Nekudaro, kana hwindo rekushivirira rakamanikana, iwe unofanirwa kubvumirana nemutengesi pane akasimba batch control zviyero.
3. Pakupedzisira, ongorora maitiro ekukundikana
Kana chigadzirwa chacho pakupedzisira chapfuura bvunzo dzekushanda (semuenzaniso, kugera simba, kumanikidza kuramba, kuchembera) mushure mekuchinja kwe viscosity, zvinoratidza kuti misiyano inowira mukati memiganhu inogamuchirwa. Kana batch ichiratidza kunyorova kwakashata kana mabhuru akasara, ongorora iyo chaiyo viscosity shanduko uye gadza yakazvitsaurira yemukati kudzora paramita. Nepo yakagadzikana viscosity ichidikanwa, chinonyanya kukosha kugadzikana kwayo kwakakwana pasi pemamiriro ako chaiwo ekugadzira.
Kuti uongorore nyaya yacho zvine hungwaru, tanga wabvisa kukanganisa pakuyerwa, wozoenzanisa maitiro mukati mechikamu chakakwana, wozobatanidza zvakawanikwa izvi nematanho chaiwo ekukundikana-maitiro aya anodzivirira kutsauswa nenhamba imwe chete. Kana iwe wakasanganawo nekusawirirana pakati pemabheji maviri eadhesive data kana zvisingaenderane mavhoriyamu ekuparadzira pamutsetse wekugadzira, tevera maitiro aya.