Yas yog cov khoom siv ntau yam Nws tau pom dav siv hauv kev tsim khoom ntawm ntau yam khoom thiab cov khoom hauv ob qho tib si hauv kev lag luam thiab cov khoom siv hauv tsev. Cov khoom siv los ntawm nws yog siv rau hauv kev tsim sab hauv ntawm thaj chaw nyob thiab chaw ua haujlwm.
Ntau yam khoom hu ua kua yas tso cai rau koj los tsim cov khoom siv tes ua ntau yam duab thiab ntau thiab tsawg. Qhov no ua rau nws muaj peev xwm ua tau raws li qhov tsim qauv daws teeb meem. Yuav ua li cas ua kua yas hauv tsev?
khoom siv ua
Yuav ua kua yas nrog koj tus kheej tes, koj yuav tsum npaj cov hauv qab no:
- iav lossis hlau thawv;
- acetone;
Hauv qhov no, tus nqi ntawm acetone siv nyob ntawm qhov xav tau ntim ntawm cov khoom tiav.
Yog tias koj xav ua kua yas nrog koj tus kheej txhais tes, daim ntawv qhia rau nws qhov kev npaj yuav yog raws li kev ua npuas dej hauv acetone. Rau qhov no, polystyrene ua npuas ncauj yog siv. Nws yog lub thawv ntim rau ntau yam khoom siv hauv tsev thiab hluav taws xob.
Yuav ua li cas DIY kua yas
daim ntawv qhia ib ntus rau kev npaj cov khoom muaj npe zoo li no:
- Qhib lub thawv nrog acetone thiab hliv cov kua rau hauv lub khob ntim kom nws qib hauv qab yog kwv yees li 1 cm.
- Cov polystyrene ua npuas ncauj yuav tsum tau tawg ua ntau daim me me, txhua qhov yuav yooj yim muab tso rau hauv cov tuab ntawm cov kuab tshuaj.
- Ua-nws-koj tus kheej cov kua yas tuaj yeem ua los ntawm kev xa txhua daim rau hauv lub thawv thiab tos kom nws yaj tag.
- Styrofoam yuav tsum muab ntxiv rau hauv lub thawv kom txog thaum nws tsis yaj. Tom qab ntawd koj yuav tsum tau tos 5-10 feeb kom cov acetone tsis tau siv kom evaporate.
- Tom qab ntawd, cov khoom hnyav yog tsim rau hauv qab ntawm lub thawv, uas tuaj yeem siv los tsim ntau yam khoom.
Kev paub yuav ua li cas ua kua yas, nco ntsoov tias qhov ua tiav hardening ntawm pawg yuav kav li 20-30 teev. Yog li ntawd, qhov yuav tsum tau ua tsis tuaj yeem raug tshem tawm ntawm pwm thaum lub sijhawm no.
Yuav tsum tau siv nrog cov roj hmab me me. Cov kev txav yuav tsum du. Cov yas ua kua yuav tsum tau ncab ntawm qhov chaw kom kho. Yog tias nws yog siv los sau qhov khoob, nws yog qhov zoo dua los siv cov txhuam hniav nrog cov tawv tawv tawv hauv kev ua haujlwm. Lawv yuav tsum tau "thawb" qhov sib tov rau hauv qhov khoob. Tom qab cov yas tau hardened, nws raug nquahu kom siv lwm txheej ntawm cov khoom.
Cov lus piav qhia tau ntev lawmmuag npaj ua. Nws tsuas yog yuav tsum tau ua kom sov hauv chav da dej lossis hauv cov cuab yeej tshwj xeeb. Tsis tas li ntawd, lub tsev plaub hau tshuab feem ntau yog siv rau qhov no.
Raws li txoj cai, cov yas ua kua yog tsim nyob rau hauv cov pob ntom ntom. Nws cov ntsiab lus thiab cov xwm txheej ntawm kev khaws cia yog nruj. Qhov kub hauv chav nyob qhov twg nws nyob yuav tsum tsis txhob poob qis dua 15 degrees. Txwv tsis pub, lub cuab yeej yuav poob kev ua haujlwm:
- viscosity;
- elasticity;
- tawv tom qab kho;
- practicality;
- durability.
Tus nqi ntawm cov kua yas yog qhov siab heev. Yog vim li cas nws thiaj zoo dua ua rau koj tus kheej.
Kev Tiv Thaiv
Acetone yog cov kua txaus ntshai heev uas muaj kev cuam tshuam tsis zoo rau tib neeg lub cev. Yog li, ua-nws-koj tus kheej cov kua yas tso cai tsuas yog ua raws li kev ceev faj hauv qab no:
- Ua ntej ua haujlwm nrog acetone, koj yuav tsum ua tib zoo kawm cov lus qhia rau nws siv. Nws tau teev nyob rau ntawm daim ntawv lo.
- Cov tsom iav tshwj xeeb yuav tsum tau siv. Lawv yuav tiv thaiv koj ob lub qhov muag nyob rau hauv cov ntaub ntawv ntawm tee thiab fumes ntawm cov kua. Ua haujlwm yam tsis muaj lawv tuaj yeem ua rau qhov muag raug mob hnyav.
- Acetone yog tshuaj lom thiab tsuas yog siv rau hauv qhov chaw muaj cua zoo xwb. Thaum ua li no, koj yuav tsum siv kev tiv thaiv ua pa.
- Qhov no yog cov nplaim taws heev. Yog li ntawd, ua-nws-koj tus kheej cov kua yas yog ua kom deb ntawm qhov chaw qhibhluav taws. Thiab thaum ua haujlwm, kev haus luam yeeb yog txwv tsis pub.
- Acetone residue yuav tsum tsis txhob muab tso rau hauv cov kav dej.
- Thaum kawg ntawm txoj kev, nrog rau tom qab nchuav cov yas tiav rau hauv pwm, koj yuav tsum ntxuav koj txhais tes kom huv.
Kev siv cov kua yas ua tiav
Kev kho kom zoo nkauj, cov khoom siv tau ntev. Tom qab nws daim ntawv thov, ib zaj duab xis elastic tshwm rau ntawm qhov chaw kho. Nws yog cov dej tsis zoo thiab UV resistant. Cov khoom tiv thaiv los ntawm cov yeeb yaj kiab zoo li no tsis ntshai ntawm kev cuam tshuam rau cov tshuaj detergents nruj. Lub ntsej muag du muaj lub ntsej muag zoo nkauj thiab khaws nws cov yam ntxwv rau ntau xyoo.
kua yas hauv qhov rais ua haujlwm
Feem ntau cov qhov rais yas uas tau tsim tshiab hauv thaj chaw sib txuas muaj qhov khoob. Txhawm rau tshem tawm cov xwm txheej zoo li no, txhua qhov chaw ntawm lub qhov rais qauv uas sib cuam tshuam tau raug kho nrog cov khoom piav qhia. Tom qab ziab, nws tsim ib zaj duab xis elastic kaw rau ntawm qhov chaw. Ua-nws-koj tus kheej daim ntawv thov cov kua yas ntawm qhov rais yog ua tau tom qab ua cov khoom raws li cov txheej txheem saum toj no.
khoom hauv kev tiv thaiv corrosion
Cov yas ua kua kuj yog qhov ua tau zoo ntawm adhesion rau cov hlau kho. Cov cuab yeej ntawm cov khoom no tau pib siv los tiv thaiv corrosion ntawm steel. Cov yas ua kua yog siv rau saum npoo yam tsis muaj priming ua ntej. Nws qhuav tawm tom qab ob peb teev. Tom qab ntawd rau ntawm qhov chawzaj duab xis yog tsim los tiv thaiv cov khoom ntawm xeb.
