Lub kua nplaum yog cyanoacrylate. Kev piav, composition, daim ntawv thov

Tam sim no lub sij hawm, tsis muaj leej twg xav nrog ib lub cuab tam li cyanoacrylate thib ob kua nplaum, zoo dua lub npe hu rau cov neeg muas zaub li superglue. Cov cuab yeej no yog siv los mus yoojyim thiab sib txuas nrog ntau hom khoom (hlau, ntoo, iav, yas, thiab lwm yam).

Ib me ntsis keeb kwm

Cov cyanoacrylate nplaum raug tsim thaum lub sijhawm Tsov Rog Zaum Ob los ntawm American tus kws tshawb fawb Harry Kuver. Nws tau ua haujlwm ntawm Eastman Kodak rau cov koob yees duab. Nyob rau hauv wartime, tus kws tshawb fawb tau koom nrog kev tsim cov yas pob tshab, uas siv tau rau hauv qhov muag pom. Cov khoom uas ua rau lub cev tsis zoo rau kev ua haujlwm. Qhov no yog vim qhov kev hloov hauv cov khoom thaum nchuav raug: cov khoom ua nplaum.

Thiab tsuas yog tom qab ntau tshaj kaum xyoo, Kuver pom tau hais tias cov khoom uas nws tsim tau yuav pab tau tib neeg. Thaum xub thawj, nws tau siv los muab tus tsiaj ntim thaum tsov rog Nyab Laj.

Ib xyoos tom qab cyanoacrylate adhesive tau qhia rau noob neej. Txij li thaum lub sij hawm, nws tseem nyob rau hauv kev thov ntawm buyers.

Tshuaj Txhaum ntawm Kev Txhaum Tshuaj

Lub ntsiab ntawm cov kua nplaum yog cyanoacrylate, uas yog, cyanoacrylic acid ester. Nws ntau yuav ncav cuag 90-99% ntawm tag nrho cov lus qhia.

Rau cov yas limizer (txog li 10%), thickeners, stabilizers, activators ntxiv. Ib qho tseem ceeb yog tias cov nplaum tsis muaj cov kuab tshuaj.

Cov txheej txheem gluing yog raws li cov tshuaj tiv thaiv ntawm anionic polymerization ntawm cyanoacrylate nrog ib tus neeg saib xyuas me me alkaline (feem ntau dej). Nrog ib txheej txheej ntawm kua nplaum (txog li 1 hli), cov av nyob hauv cov huab cua thiab nyob rau ntawm cov chaw ua ke yuav tsum yog txaus rau cov tshuaj tiv thaiv mus ntxiv. Nyob rau hauv tus ntawm noo noo, stabilizer, uas yog nyob rau hauv lub kua nplaum, splits. Qhov no yuav ua rau kom muaj kev sib tawm tsam ntawm cov pob zeb tawg.

Optimum tej yam kev mob yog chav tsev kub thiab 40-60% av noo. Raws li cov kev mob no, qhov zoo tshaj plaws tau zoo uas cyanoacrylate nplaum yuav muab tau. Daim ntawv thov ntawm tus neeg sawv cev ntawm qhov chaw qis qis yuav ua rau nce zuj zus. Siab dua cov av noo yuav txo qhov kev sib txuas ntawm tsev, txo lub zog.

Cov Khoom Tshiab

Cyanoacrylate nplaum (nqe li ntawm 500 raus rau 50 gram) yog ib yam khoom tsis muaj xim nrog lub tsw muaj zog uas ploj tom qab ziab. Nws muaj cov ntaub ntawv hauv qab no:

• Ua tiav los ntawm cov tshuaj qhuav.

• Tsis muaj kuab.

• Lub viscosity yog li 1.5 txhiab cps.

Lub ntsiab zog ntawm qhuav kua nplaum:

• Tiv thaiv kom sov siab (lub caij sov so mus txog 80 degrees lossis luv luv rau 100 degrees).

• Nws nrog qis dua kub (txog li raus 20 degrees). Thaum qis dua, lub zog tensile txo.

• Nws tseem raug nyob hauv dej rau ob peb lub lis piam.

• Resistant rau cov teebmeem ntawm cov kuab tshuaj (acetone, haus dej cawv, roj av roj, roj av, lub cev roj) thiab tshuaj. Lub zog ntawm adhesion yuav cuam tshuam los ntawm alkalines xwb.

• Tuas load ntawm 150-250 kg / cm ^3.

Scope ntawm daim ntawv thov

Cyanoacrylate nplaum yog feem ntau siv rau kev sib txuas ntawm cov khoom ntim uas tsis yog ntxeem: rau qhov sib txuas ntawm cov khoom siv xov tooj cua, cov ntaub yas hluav taws hauv lub qhov rooj (qhov rooj) qhib, cog kev sib txuas, cov laug cam, pob khoom,

Ib qho ntawm hom "super-glue", octyl-2-cyanoacrylate, vim qhov ceev ntawm chaw thiab yam tsawg toxicity siv rau hauv kev phais kom tsis txhob los ntshav thiab ua kom qhov txhab. Tsis ntev los no, nws tau ua tau siv lo nplaum rau hauv pob txha.

Hauv tsev neeg siv superglue rau txhaws ntawm cov nqaws thiab tawg. Ua li no, nws muaj chav nrog cov dej qab baking. Lub resulting sib tov freezes sai sai thiab tsa cov yas.

Cov cyanoacrylate nplaum yuav pom tau tias yog ib qho cuab yeej universal. Nws yog siv rau hauv txhua qhov: tshuaj, khoom ua si, khoom tsim, tsheb tsim, cov khoom ua si thiab cov hniav nyiaj hniav kub, cov khau, cov kav dej, advertising thiab ntau lwm tus.

Siv

Cov hniav yuav tsum tau muab tso ua ntej yuav tsum muab ntxuav los ntawm hmoov av, xeb thiab roj. Tus neeg sawv cev yuav tsum nyob rau hauv chav sov li ntawm 24 teev. Tom qab no, koj tuaj yeem siv cyanoacrylate nplaum. Tus activator kuj yuav tsum muaj nyob rau hauv cov xwm txheej uas muaj qhov tsis zoo, los npog cov kab tawg loj. Nws tuaj yeem siv tau ua ntej lub sijhawm ntawm kev ua ub ua no (daim ntawv thov rau ib qho chaw) thiab tom qab (txau ntawm lub nplaum).

Nyob rau ntawm ib qho ntawm cov zuag nplaum yog siv rau qhov tsawg kawg nkaus. Ua kom txheej txheej, koj tuaj yeem siv lub yas duav. Nyob rau hauv cov cheeb tsam loj, lub kua nplaum yog siv nrog dauv. Tom qab ntawd cov chaw tuaj yeem koom thiab nruj nreem.

Lub kua nplaum yuav tsum nyob ntawm qhov chaw sov. Ntawm 20 degrees Celsius, qhov no tsuas yog siv ob peb feeb xwb. Cov txheej txheem no yuav ua kom sai yog tias muaj ya raws ntawm cov hniav kom raug ua ke.

"Grabs" kua nplaum nyob hauv ob peb feeb xwb. Ua kom tsis txhob pub cov kua nplaum rau ntawm ib hnub ntawm 20 degrees thiab cua txias dua 55%.

Kev tiv thaiv kev nyab xeeb

Tag nrho cov hauj lwm ntsig txog kev siv cyanoacrylate nplaum, yuav tsum tau ua nyob sab nraum zoov. Kev ua haujlwm hauv chav yuav tsuas pub yog tias muaj qhov chaw quab yuam.

Tsis txhob kov cov tawv nqaij, qhov muag, digestive system.

Qhuav nyob rau hauv lub raj kua nplaum tsis tau muab squeezed tawm los ntawm kev quab yuam, pub kom uncontrolled kwj ntawm cov khoom yuav nkag tau rau hauv lub qhov muag. Nyob rau hauv rooj plaub no, lub spout yog punctured nrog ib tug pin (zoo dua - liab-kub).

Cov "ntiv tes" ntiv tes yuav tsum tsis txhob raug nruj nruj lossis quab yuam nrog rab riam. Qhov no yuav tsuas ua kom tawv nqaij. Rau cov rooj plaub no, siv cov acetone (los yog zoo ib yam), ua ntawv thov ib lub ncuav. Acetone yuav nplua lub kua nplaum, tab sis tsis yog instantly. Qhov no yuav siv sij hawm qee lub sijhawm (nyob rau hauv cov teeb meem nyuaj txog li ib teev).

Nyuaj txwv tsis pub thaum ua haujlwm nrog kua nplaum, muab tso rau hauv paj rwb (tshwj xeeb yog looj hnab looj tes). Thaum twg tus nplaum hu rau cellulose ntawm cov ntaub so ntswg, ib qho tshwm sim tshwm sim nrog kev tso tawm ntawm ib tug loj npaum li cas ntawm tshav kub. Qhov no tuaj yeem ua rau kub nyhiab.