BF hom kua nplaum (butyralphenol) tau tso tawm rau kev sib txuas txhua yam khoom siv. Txij li xyoo 1946, tus neeg sawv cev no tau siv rau kev sib txuas cov hlau tsis muaj hlau, cov khoom siv hlau tsis muaj hlau, nrog rau kev kho thiab sib txuas cov khoom hlau nrog cov hlau tsis muaj hlau. Cov kua nplaum yog pob tshab viscous tuab ntawm ntau qhov ntxoov ntxoo los ntawm xim av mus rau daj. Qhov zoo ntawm cov kua nplaum suav nrog qhov tseeb tias nws tsis tuaj yeem ua rau lwj thiab xeb, kom tsawg dua, tab sis tseem tiv taus acetone, cawv thiab alkaline ib puag ncig.
Muaj ntau hom "BF" kua nplaum. "BF-2" thiab "BF-4" yog siv los kho cov khoom siv hauv av, plooj (porcelain), iav thiab ntau yam hlau. Txhais tau hais tias "BF-6" yog siv rau gluing hloov tau cov ntaub ntawv, ntaub, thiab kuj yog siv nyob rau hauv kev kho mob xyaum. Hom kua nplaum "BF" muaj qhov sib txawv ntawm cov tshuaj tiv thaiv ntawm polyvinyl butyral. Txhais tau tias "BF-2" muaj 2%, "BF-4" - 4% thiab "BF-6", feem, 6% ntawm cov khoom no
Kaw"BF" kev kho mob nyob rau hauv nws muaj pes tsawg leeg txawv ntawm lwm tus neeg nyob rau hauv hais tias nws yog ib tug cawv tov, ua tiav nrog softeners thiab plasticizers. Kev kho mob kua nplaum yog dav siv thaum gluing ntau cov ntaub so ntswg ua ke, nrog rau cov ntaub so ntswg nrog lwm cov ntaub ntawv (cardboard, ntawv). Hauv kev tsim cov parachutes, parachute sectors yog fastened nrog cov cuab yeej no. Nws tseem yog qhov tseem ceeb hauv kev kho cov ntaub pua plag, khaub ncaws, lub rooj zaum hauv tsheb, cov ntaub, ntaub ntaub thiab lwm yam khoom siv tau yooj yim.
Vim nws cov cawv cawv, cov kua nplaum kho mob siv los ua tshuaj tua kab mob. Nws siv hauv kev phais mob ua rau muaj kev kho mob sai sai.
Siv rau ntawm qhov txhab, cov tshuaj no tsim cov yeeb yaj kiab tiv thaiv uas ua rau muaj kev tuag ntawm cov kab mob tshwm sim thiab uas yog ib qho kev txhim khu kev qha uas tiv thaiv lawv rov nkag mus rau hauv lub qhov txhab.
Ib zaj duab xis tiv thaiv ntawm qhov txhab ntawm qhov txhab yog tsim nyob rau hauv ob mus rau peb feeb tom qab siv cov nplaum thiab tuaj yeem nyob ntev li ob peb hnub.
Tib lub sijhawm, cov nplaum kho mob tsim cov nplaum nplaum uas tsis cuam tshuam kev txav ntawm cov ntaub, tsis ua txhaum nws elasticity thiab tsis cuam tshuam qhov yooj.
Yog tias "BF-6" txhais tau tias siv, hnav khaub ncaws kho mob tau ua tom qab 2-3 hnub thiab muaj nyob rau hauv daim ntawv thov tshiab ntawm cov kua nplaum rau ntawm qhov txhab. Nyob rau hauv qhov xwm txheej uas cov yeeb yaj kiab tiv thaiv puas lawm, nws txaus los siv cov nplaum kho mob dua.los tsim ib txheej tshiab elastic, thiab lub qhov txhab rov qab nyob rau hauv cov tshuaj tua kab mob tiv thaiv zaj duab xis.
BF-6 kua nplaum yog siv los ntawm kws kho hniav. Cov kwj dej hauv paus coated nrog kev npaj kho mob yog cais los ntawm kev sib cuag ntawm cov ntaub so ntswg.
Qhov tsuas yog thiab tseem ceeb contraindication rau kev siv "BF-6" hauv cov tshuaj tuaj yeem yog tus neeg mob siab rau ntawm tus neeg mob lub cev. Tsis tas li ntawd, cov kws tshaj lij ceeb toom tawm tsam kev siv cov nplaum nplaum hauv kev kho cov menyuam yaus hnub nyoog qis dua ib xyoos.
Cov kua nplaum tuaj yeem siv rau hauv kev xyaum kho tsiaj, hauv kev phais kom hniav zoo nkauj, thiab kho mob me.
