Pine rosin yog dab tsi?

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Thaum koj xav sib sau koj tus kheej cov khoom siv hluav taws xob, koj yuav tsum tau ntim cov hlau, cov hlua thiab cov hlua khi. Yog lawm, peb yuav tsum tsis txhob hnov qab txog cov ntsiab lus ntawm Circuit Court nws tus kheej, tab sis tam sim no peb xav paub ntxiv txog qhov zoo ntawm cov txheej txheem soldering. rosin yog dab tsi? Peb yuav tham txog nws tam sim no.

rosin yog dab tsi?

Tej zaum koj tau pom hauv cov khw muag khoom lag luam rau kev tsim lawv cov khoom, cov tshuaj pob tshab vitreous uas zoo ib yam li amber nyob rau hauv nws cov tsos thiab xim. Qhov no yog Pine rosin. Cov tshuaj no yog thawj zaug tau txais nyob rau hauv Greek lub nroog ntawm Colophon thiab yog Ameslikas hu ua "Colophon resin". Nws yog mined los ntawm cov pos hniav resin. Nws kuj tau txais los ntawm ntau hom ntoo thuv, tshem tawm turpentine thiab lwm yam khoom tsis haum los ntawm nws siv chav da dej. Nyob rau tib lub sij hawm, tag nrho cov tsis-volatile impurities raug merged. Lub distillation yog nqa tawm siv chav, qhov kub ntawm 200 degrees. Xws li qhov taw qhia tsis ua rau decomposition ntawm rosin.

Nyob zoo ib tsoom phooj ywg

Tam sim no rosin tuaj yeem tau los ntawm cov ntoo thuv crushed siv cov kuab tshuaj tshwj xeeb lossis muab rho tawm los ntawm cov roj siab lossis cellulose. Nyob ntawm txoj kev, xws lihom:

1. Pib.
2. siab.
3. Txaus.

niaj hnub rosin yog 60-90 feem pua cov resin abietic acid, 1-12% fatty acids thiab cov khoom nruab nrab (xws li triterpenoids, sesquiterpenoids thiab diterpenoids). Nws tsis tuaj yeem yaj hauv dej, tab sis cawv, ether, benzene, acetone, thiab cov kerosene me ntsis tuaj yeem ua qhov no nrog nws. Ntawm 40 degrees, rosin pib mos, thiab ntawm 100 nws twb yaj lawm. Thaum kub txog 250 degrees, nws boils. Yog tias koj ntxiv cov ntxhia thiab cov organic rau nws, koj tau txais xab npum. Yog tias koj yaj nws hauv dej cawv polyhydric, ces koj yuav muaj rosin ester. Raws li koj tuaj yeem pom, muaj ntau daim ntawv thov. Tau kawg, nws muaj kev nyab xeeb tshaj plaws los ua ib yam dab tsi thaum Pine rosin nyob ntawm tes. Cov chaw tsim khoom yuav tsum xyuas kom meej tias cov khoom ua tau raws li tag nrho cov kev cai ntawm lub xeev cov qauv (tsis muaj cov neeg thib peb impurities lossis lwm yam).

Properties

Pine rosin muaj cov yam ntxwv zoo tshaj plaws. GOST 19113-84 xyuas kom meej tias cov khoom siv rau lub hom phiaj no ua tau raws li cov qauv zoo thiab kev nyab xeeb rau cov neeg ua haujlwm nrog lawv. Nws pib mos ntawm 68 degrees Celsius. Nws kuj muaj yuav luag tsis muaj fatty acids. Qhov no rosin yog suav hais tias yog ib yam khoom ntuj thiab ib puag ncig zoo. Nws muaj xim daj amber. Extraction thiab siab rosin yog suav hais tias yog khoom. Lawv kuj txawv ntawm cov xim. Tab sis, txawm tias muaj ntau txoj kev tau txais, lawv cov khoom raug suav tias yog zerau cov uas muaj cov khoom ntuj tsim, uas yog ntoo thuv rosin. Kev txhim kho adhesion uas muaj nyob nruab nrab ntawm qhov chaw thaum siv cov qauv no yog qhov txaus siab heev. Rosin kuj muaj cov tshuaj ntxuav tes zoo thiab nkag mus (rau ether thiab cawv daws) cov khoom. Tom qab ntawd coj mus rau nws siv raws li ib tug waterproofing neeg sawv cev. Nws kuj tseem siv tau los ua cov nplaum.

siv tswv yim

Qhov chaw tseem ceeb ntawm daim ntawv thov niaj hnub no yog los pab rau cov khoom siv hlau. Yog li ntawd, ntoo thuv rosin raws li ib tug soldering flux qhia tau hais tias zoo. Txawm hais tias muaj ntau qhov tseem ceeb ntawm kev tsim tshuaj lom neeg niaj hnub no, nws tseem siv hauv hluav taws xob thiab xov tooj cua engineering. Yog li, molten Pine rosin tuaj yeem yooj yim tshem tawm cov oxide txheej uas nyob rau saum npoo ntawm cov khoom siv. Nws tseem yog ib qho tseem ceeb uas nws txo qhov nro ntawm lub solder. Vim qhov no, nws kis tau ntau tus sib npaug ntawm lub dav hlau ua haujlwm. Kev siv xws li flux nce qhov zoo ntawm cov solder. Nws kuj muaj qee yam kev tiv thaiv tiv thaiv ntau yam pa taws ib puag ncig. Tsis tas li ntawd, acid neutrality tseem cuam tshuam rau kev khaws cia ntawm qhov chaw. Qhov no ua tau ua tsaug rau kev siv cov khoom siv raw ntawm lub hauv paus chiv keeb. Yog li ntawd, qhov taw tes soldering tsis corrode lub sij hawm thiab tsis muaj tam sim no to. Qhov no yog qhov tseem ceeb tshwj xeeb thaum lub sij hawm sib dhos ntawm cov hluav taws xob circuits. Tsis tas li ntawd, ntoo thuv, siab thiab extraction rosin tuaj yeemsiv ua ke nrog ntshiab ethyl cawv nyob rau hauv ib tug ratio ntawm 4 mus rau 6 kom tau ib tug kua flux. Txawm tias cov neeg uas tuav cov hlau nplaum thawj zaug hauv lawv lub neej tuaj yeem siv rosin. Ua ntej koj yuav tsum sov lub sting thiab poob rau hauv cov khoom khov. Tom qab ntawd lawv muab solder, uas yog siv rau saum npoo yuav tsum tau soldered thiab ib feem. Yog hais tias tsim nyog, nrog kev pab los ntawm ib tug soldering hlau taub, nws yuav tsum tau muab tusyees faib. Qhov tshwm sim yuav tsum yog ib pawg monolithic uas yuav muab tso ua ke txhua yam uas xav tau. Muaj cov ntawv thov hauv lwm qhov chaw ntawm tib neeg kev ua haujlwm. Yog li, rosin yog ib txwm siv los txhuam cov hlua ntawm bowed suab paj nruag, thiab yog tias koj zom nws mus rau lub xeev hmoov, koj tuaj yeem tau txais cov pa luam yeeb zoo.

Zaj lus

Raws li koj tuaj yeem pom, rosin muaj txiaj ntsig zoo hauv ntau thaj chaw. Thiab kev ntseeg siab ntawm kev coj noj coj ua ntawm txhua hom yog nyob los ntawm cov khoom ntoo ntoo. Yog tias koj xav paub meej tias Pine rosin yog dab tsi, GOST 19113-84 yuav pab koj nrog qhov no.