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界面張力儀測量的目的是什么？

更新時間：2025-10-22

點擊次數(shù)：2403

　　界面張力儀是用物理辦法替代化學(xué)辦法測定液體表，能快速、準(zhǔn)確的測驗各種液體氣體外表的張力值。廣泛應(yīng)用于石油、化工、制藥、印刷、紡織、電力等職業(yè)。

　　界面張力儀測驗的張力的產(chǎn)生原因是液體中分子之間的吸引力。假如咱們觀察某種介質(zhì)的內(nèi)部分子結(jié)構(gòu)的時候，會發(fā)現(xiàn)分子間的吸引力是相同的。因此，分子所遭到的各個方向的力是相同的，合力為零。

　　另一方面，假如分子處于液體外表，液體內(nèi)部的吸引力作用在一邊，別的一邊卻沒有分子作用力的存在。因此，合力的方向是指向液體內(nèi)部的。從微觀來看，液體外表積會趨向小化，液滴將因此趨向變圓。

　　外表張力，是液體外表層因為分子引力不均衡而產(chǎn)生的沿外表作用于任一界線上的張力。因為環(huán)境不同，液體性質(zhì)不同，處于界面的分子與處于相本體內(nèi)的分子所受力是不同的。而關(guān)于現(xiàn)代化的液體科研，要求從更細(xì)節(jié)、更準(zhǔn)確、更科學(xué)合理的角度，去研討液體的本身性質(zhì)和影響環(huán)境。

　　研討外表張力首要是為了確定：

　　1.液體的本身性質(zhì)；

　　2.環(huán)境對外表張力的影響；

　　3.具有特別功能的活性劑的濃度。

　　現(xiàn)在，無論是科研仍是工業(yè)應(yīng)用，對加入特別功能活性劑的研討和應(yīng)用，外表張力已成為首要的參考項目之一，如日化職業(yè)的增泡劑、增粘劑等，噴墨和油墨職業(yè)的潤濕劑、流平劑等，化工的樹脂、乳液等，清洗職業(yè)的清潔劑、除污劑等等。

　　測定外表張力儀的辦法有毛細(xì)管上升法、毛細(xì)管測壓法、滴液法和泡壓法等。其中泡壓法外表張力儀相關(guān)于靜態(tài)的外表張力儀愈加適合研發(fā)丈量運用，這一類的張力儀首要以上海艾飛思精密儀器有限公司界面張力儀為主。

上一條動態(tài)表面張力儀在藥劑學(xué)中的前景
下一條為什么使用全自動表面張力儀計算表面張力？

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