Molecular nplaum: mechanism ntawm qhov kev txiav txim, tshwj xeeb, ib txoj kev siv

Lug siv nyob rau hauv lub neej txhua hnub thiab nyob rau hauv ib tug neeg qhauj tau txais molecular nplaum. Nyob rau hauv kev ua lag luam ntawm mounting ntaub ntawv nyob rau hauv daim ntawv ntawm ib tug pas nrig los yog ib tug maub ntais xim nrog ib lub cheeb ntawm 10-11 hli thiab ib tug ntev ntawm 30 cm.

Ib txhia hom uas hais nyob rau hauv compact hlab. Nws muaj koob meej nws tau los ntawm lub peev xwm los nruj nreem lo txawv cov ntaub ntawv, thiab rov qab siv lub.

mechanism ntawm qhov kev txiav txim

Lub ntsiab tivthaiv ntawm cov molecular nplaum yog cyanoacrylate - siab molecular compound, ether cyanoacrylic acid. Nws cov ntsiab lus nyob rau hauv muaj pes tsawg leeg - txog 90%. Qhov tshuav ib feem yog muab tshem tawm nyob rau hauv plasticizers, stabilizers, retardants, thickeners, uas txiav txim seb tus nqi ntawm cov khoom things.

Nws muaj peev xwm fastening cyanoacrylate nplaum yuav tsum anionic polymerization, uas tshwm sim nyob rau hauv qhov kev txiav txim ntawm tsis muaj zog bases - dej. Thaum ua ntawv thov cov muaj pes tsawg leeg rau ntawm cov tsevneeg saum npoo nws pib los mus nqus dej los ntawm lub chaw, nyob rau tib lub sij hawm hardens.

Teem lub sij hawm mas nws txawv ntawm feeb rau vib nas this. Yog vim li cas koj yuav tsis tawm ib feem ntawm cov tawm sab nraud - nws sai sai deteriorate.

dosing

Siv molecular lo tsevneeg yuav ua tau yas, iav, ceramics, roj hmab, yas thiab lwm yam ntaub ntawv. Nyob ntawm seb nws ntau yam ntawm daim ntawv thov technology yuav sib txawv. Rau txuas chaw tsaus yas pas nrig yuav tsum:

1. Ntxuav thiab degrease lub ua ke qhov chaw.
2. Lub me me loj ntawm lub substance yaj nyob rau hauv ib tug nws yog xim hlau ntim. Nws yog yooj yim siv ib tug soldering hlau los yog ib tug sib zog.
3. Ncuav lub melted sib tov ntawm abraded lub ntsej muag.
4. Hlob hais ua ntej lub nplaum cools.

Thaum cov muaj pes tsawg leeg tau txias, lub ua khoom yuav siv tau. Txawm hais tias molecular kua nplaum thiab kom siab zog, los ntawm qhov kev txiav txim ntawm dabtsi yog khoov loads thiab tsawg kub zoo tiv thaiv cov sib raug zoo nto.

Nta ntawm kev siv ntawm cov muaj pes tsawg leeg nyob rau hauv lub thawv

Tus txheej txheem ntawm tsevneeg qhov chaw kua cyanoacrylate nplaum muaj xwb ib ob peb sib txawv los ntawm cov pa technology uas tso npe thov lub compositions. Workpieces yuav tsum huv si thiab pub dawb roj. Ces tus sib tov twb thov, tiam sis tsuas yog rau ntawm ib lub chaw yog xav pressed.

Tom qab tua, sab laug nyob rau hauv siab rau tej lub sij hawm, tom qab uas lub glued qhov chaw npaj txhij rau kev siv. Craftsmen rau accelerating tus solidification ntawm tuab khaubncaws sab nraud povtseg ntawm nplaum sprinkled nws ci dej qab zib - alkaline neeg sawv cev. Nyob rau hauv cov ntaub ntawv no, qhov chaw ceev yog ceev ob peb lub sij hawm.

Zoo thiab tsis zoo

Lub ntsiab kom zoo dua ntawm adhesives yog lub siab ruaj khov ceev - ib feem hlob txhua lwm yam rau ib tug ob peb lub vib nas this, tom qab uas lawv yuav tsum tau muab tshem tawm los ntawm cov xovxwm. Tab sis txog thaum lub Desired zog yuav tsum siv sijhawm txog li 24 teev.

Persistence - lub thib ob zoo dua, uas muaj ib tug molecular nplaum. Tsis organic, khoom cua los yog kuab tshuaj yog tsis muaj peev xwm los cuam tshuam txog lub molecular qauv ntawm cov solidified muaj pes tsawg leeg. Nws muab nws insulating zog - ib tug sib tov yog ib qho zoo heev insulator.

Tseem ceeb shortcomings compositions muaj tsis tau. Ib txhia neeg siv cov kev tsis txaus siab txog lub siab brittleness ntawm lub sib raug zoo qhov chaw. Cov lwm tsis zoo kuj hais tias:

1. Tsis tshua muaj durability nyob rau hauv poob siab thiab txhua yam kev cuam tshuam.
2. Toxicity: mus ua hauj lwm nrog cov ntaub ntawv uas yuav tsuas yuav nyob rau hauv ib tug ventilated cheeb tsam.
3. Lub high degree ntawm adhesion rau tib neeg daim tawv nqaij: nws yog tsim nyog los soj ntsuam qee yam ceev faj thaum koj thov.

Lwm disadvantage yog tau mus rau npe rau tus nqi. Yog li, tus nqi ntawm nrov Klebstoff nplaum mas nws txawv ntawm 3-7 txhiab. Rubles rau 6 kg ntawm cov khoom. Keb cov nqi yuav ua tau nyob rau hauv tsevneeg ib tug loj tus naj npawb ntawm qhov chaw, los yog thaum kho loj cheeb tsam.