Inqubo yokwelapha enamathelayo

Inqubo yokwelapha enamathelayo

Indlela yokwelapha:

Ukwelapha okunamathelayo kwenziwa ngezindlela ezingokwenyama, njengokuhwamuka kwezinyibilikisi, i-emulsion coagulation kanye nokuncibilika kokupholisa, nezindlela zamakhemikhali.

• (1) Okunamathelayo okuncibilika okushisayo: I-polymer incibilika iqina ngokupholisa ngemva kokuba imanzise indawo ukuze iboshwe.

(2) Ingcina yesixazululo: Njengoba i-solvent ihwamuka futhi ukugxila kwesixazululo kuyanda, kancane kancane kuyaqina futhi kuba namandla athile.

(3) I-Emulsion Adhesive: Njengoba amanzi aku-emulsion engena kancane kancane ku-adherend enezimbotshana futhi ahwamuke, ukugxila kwe-emulsion kuyaqhubeka nokukhula, futhi ekugcineni ngenxa yomphumela wokungezwani kwendawo, izinhlayiya ze-polymer colloidal ziyajiya. Uma izinga lokushisa le-ambient liphezulu, i-emulsion iyancipha ibe ifilimu enamathelayo eqhubekayo, kuyilapho izinga lokushisa elizungezile liphansi futhi izinga lokushisa elincane lokubunjwa kwefilimu (MFT), kwakhiwa ifilimu enamathelayo engapheli emhlophe. Izinamathiselo ze-emulsion ikakhulukazi ziyi-polyvinyl acetate nama-copolymers ayo nama-copolymers e-acrylic acid.

(4) Izinamathiselo ze-thermosetting Ama-monomers asebenzayo noma ama-prepolymers we-thermosetting resins enza ukusabela kwe-polymerization. Njengoba isisindo samangqamuzana sikhula, amaketanga amangqamuzana ashintsha futhi awela-axhumanisa, enze ijeli engancibiliki noma ukuqina okuyisisekelo. Ukwelula isikhathi sokuphulukisa nokwandisa izinga lokushisa lokuphulukisa phakathi kwebanga elithile akufani, futhi ukwehlisa izinga lokushisa lokuphulukisa kunzima ukunxephezela ngokwandisa isikhathi. Ngenxa yokuthi ukusabela kwamakhemikhali okuthile kudinga ukwenzeka phakathi kokunamathelayo kanye nengaphezulu le-adherend, lokhu kudinga izinga lokushisa eliphakeme ngokwanele ukuze uqhubeke.

Ukwelapha ingcindezi:

Kunenzuzo ukuthi i-adhesive ingene ngokugcwele ebusweni; kunenzuzo ekususeni ama-volatiles aphansi e-molecular akhiqizwa ukusabela kokuphulukisa okunamathelayo; kunenzuzo ekususeni ama-solvents aguquguqukayo asele kungqimba lokunamathela; kunenzuzo ekulawuleni ukushuba kwesendlalelo sokunamathela; izinto zokunamathisela ezine-viscosity ephezulu zivame ukuba nezingqimba ezinamathelayo eziminyene, futhi ukulungiswa kwengcindezi yokwelapha kulawula ububanzi bogqinsi bongqimba olunamathelayo.

Ngemva kokufaka iglue, yiyeke ihlale isikhashana, ebizwa ngokuthi pre-curing. Lapho i-viscosity yeglue ikhula, sebenzisa ingcindezi ukuze uqinisekise ukufana kokuqina kwesendlalelo seglue.

Izinga lokushisa lokwelapha:

Uma izinga lokushisa lokuphulukisa liphansi kakhulu, ukuminyana kokuxhumanisa kwesendlalelo sokunamathisela kuphansi kakhulu, futhi ukusabela kokwelapha akuphelele; uma izinga lokushisa lokuphulukisa liphezulu kakhulu, kulula ukubangela ukuba iglue ilahlekelwe noma yenza ungqimba lwe-adhesive lube brittle, okuholela ekunciphiseni kwamandla okubopha. Ukushisa kulungele ukusakazeka kwama-molecule phakathi kwe-adhesive nezingxenye eziboshiwe, ezingasiza ukwakha izibopho zamakhemikhali.

(1) Indlela yokushisisa okuqondile kuhhavini: Sebenzisa ithuluzi elifutha umoya ukuze uqinisekise ukudluliswa kokushisa okufanayo.

(2) Indlela yokushisa yangaphandle: Ukushisa kudluliselwa ngokushesha ngaphakathi kwesendlalelo sokunamathela, kufinyeza kakhulu isikhathi sokuphulukisa. Indlela yokushisa ye-Ultrasonic: Ifanele ukuphulukiswa kokushisa kwe-viscoelastic adhesives kanye ne-solvent-i-adhesives yamahhala, kodwa ayifanele ukunamathela okuqinile kwe-thermosetting.