Cov kuab P4 specifications, qauv

Rau kev vam meej painting hauj lwm yog qhov tseem ceeb heev adjuvants xws li cov kuab tshuaj, uas yuav tsum siv yog tsim nyog los npaj cov nto thiab impart cov yam sib xws ntawm cov xim muaj hlau ntaub ntawv. Nyob rau hauv no tsab xov xwm peb yuav sib tham txog cov kuab P4, uas yog ib qho ntawm feem nrov thiab zoo-paub nyob rau hauv kev ua lag luam ntawm zoo xws li cov ntaub ntawv.

General yam ntxwv

P4 kuab - ib tug organic kuab uas yog ib tug ntshiab tsis muaj kob kua (nyob rau hauv tej rooj plaub tej zaum yuav muaj ib tug yellowish tint) tsis muaj pom tshem tawm hais. Nws yus muaj los ntawm ib qho kev tsw thiab siab volatility. Qhov nruab nrab nqi ntawm cov txheeb ze ceev ntawm lub substance yog 0.85 g ib cc. cm. autoignites ntawm ib tug kub ntawm 550 degrees. Nws ua raws li cov qauv stipulated los ntawm GOST 7827-74. Ua nyob rau hauv industrial thawv - yas thiab iav ntim (fwj) ntawm ntau ntau thiab tsawg.

P4 kuab: muaj pes tsawg leeg

P4 - ib tug sib tov ntawm peb organic solvents, uas collectively tau txawm ntau dua efficiency. Nws muaj xws li cov nram qab no yam:

• Toluene - 62%;

• acetone - 26%;

• butyl acetate - 12%.

Vim li no cov muaj pes tsawg leeg txaus kuab muaj zoo neeg lub zog thiab high efficiency xaus ntawm varnishes thiab xim. Tej muaj li butyl acetate, tsub kom lub gloss films thov coatings thiab tiv thaiv ntxuav hniav dawb thiab tshuaj dawb tso.

Lub ntsiab kev ciaj ciam ntawm lub kuab

Cov kuab P4 (GOST 7827-74) muaj raws li nram no cov yam ntxwv:

• qhov taw qhia tus nqi volatility ntawm ethyl ether nyob rau hauv ntau ntawm 5 mus rau 15;

• coagulation tus xov tooj yog tsis tsawg tshaj li 24%;

• cov kev faib ua feem ntawm cov dej (los ntawm loj) yog tsis ntau tshaj li 0.7%;

• ib tug acid tooj tsis ntau tshaj 0,07 mg Koh / g.

Qhov raws li kuab qib P-4A. Lub reagent thiab kuab P4 - analogs ntawm specifications. Txawm li cas los, lawv txawv dog dig nyob rau hauv muaj pes tsawg leeg, txij li thaum, raws li cov uas yuav tsum tau ntawm GOST, nyob rau hauv lub P-4A tsis muaj xws li butyl acetate. Lwm qhov txawv yog hais tias cov qhab nia uas hom kuab F-4A, tsis zoo li P4 yaj txha hniav laus CHV-124 (kev tiv thaiv thiab grey).

Wherein lub kuab siv P4?

Lub reagent siv rau yug me nyuam ntawm cov xim tsev ntaus PSC PSC haujlwm uas yog COy thiab LS, lub hauv paus rau ntau lawm uas yog chlorinated polyvinyl tshuaj dawb resins, epoxy resins, yas chloride copolymers thiab ib co lwm zaj duab xis-yees.

Dosing - yuav ua li cas rau dilute cov xim muaj hlau kuab P4?

P4 kuab ntxiv nyob rau hauv ib tug tej yam khoom (cov kua roj vanish lossis tshuaj) nyob rau hauv me me txog thaum lub Desired taub hau. Bred xim (lacquer) nws yuav tsum tau tas li zaj.

Tom qab ua ntawv thov cov npaj txheej kuab suab thiab cov zaj duab xis-txoj kev cov ntaub ntawv uas solidify, tig mus rau ib tug tiv thaiv txheej. Nws yog ib qho tseem ceeb thaum ua hauj lwm nrog ib tug hnyav kom tsis txhob ingress ntawm dej raws li ib feem ntawm lub acetone yuav nkag sib tov nrog nws, thiab qhov no nyob rau hauv lem yuav ua rau ib tug distortion ntawm cov xim los yog ntxuav hniav dawb ntawm qhov tseeb lub tsho tiv no.

Kev Nyab Xeeb ceev faj thaum ua hauj lwm nrog solvent P4

Nws yuav tsum tau nco ntsoov tias cov ntaub ntawv uas belongs rau lub toxicant thiab tej zaum yuav muaj ib tug tsis zoo feem nyob rau tib neeg lub cev, uas yog nkag los ntawm nqus tau pa, thiab penetrates ntawm daim tawv nqaij. By heev raug tau tsis zoo zoo ntawm cov kuab rau hauv lub hlwb pob txha thiab cov ntshav. Nyob rau hauv cov ntaub ntawv ntawm heev kev sib cuag nrog cov tawv nqaij tej zaum yuav tsim dermatitis.

Xav tag nrho cov saum toj no, nrog rau cov kuab P4 yuav tsum tau nqa tawm nyob rau hauv thaj chaw, muab zoo chaw dim pa. Nws tseem yog tseem ceeb rau siv kev tiv thaiv cov khoom tiv thaiv kom txhob raug tus kab mob rau teeb meem tshuaj nyob rau hauv lub pa system, ob lub qhov muag thiab tawv nqaij ntawm ob txhais tes (ncauj, hnab looj tes, tsom iav).

P4, raws li zoo raws li ib tug xov tooj ntawm lwm yam kuab tshuaj, yus ib tug high degree ntawm hluav taws txaus ntshai. Cov sib tov twb yooj yim cig, thiab, tas, yog heev. Khub niam txiv ua li lub tshuaj uas muaj vaj tse mus sau cov kuab kuj yog heev. Yog li ntawd, ib tug prerequisite rau lub kuab yog ua raws li cov hluav taws kub kev nyab xeeb uas yuav tsum tau.