20 Misalai na Dakatarwa - Encyclopedia

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Halaye na dakatarwa
Misalan dakatarwa

A cikin ilimin kimiyya, a dakatarwa Wani nau'in cakuda iri -iri ne wanda ɗaya ko fiye da abubuwa suka haifar a cikin tsayayyen yanayi wanda aka watsa shi cikin wani abu a cikin ruwa ko yanayin gas. A cikin dakatarwa, daskararre (lokacin tarwatsawa) ba a narkar da shi a cikin matsakaicin ruwa (lokacin watsawa). Misali: ruwan 'ya'yan lemun tsami, tunda gutsuttsun ruwa yana yawo kuma ba a haɗa shi cikin matsakaici na ruwa, magunguna foda.

Dakatarwa shine cakuda iri -iri saboda yana yiwuwa a rarrabe barbashi da suka haɗa. Sun kasance cakuda mara tsayayye, tunda, saboda girman su, daskararrun barbashi a cikin dakatarwa suna daidaitawa cikin sauƙi lokacin da cakuda ke hutawa.

Zai iya bautar da ku: Haɗawar daskararru tare da ruwa

Halaye na dakatarwa

Su ne gaurayawar da ake iya ganewa saboda galibi ba su da kyau.
Kodayake yawancin sun ƙunshi abubuwa masu ƙarfi da ruwa (dakatarwar inji), yana iya zama ruwa + ruwa da ƙarfi ko ruwa + gas. Misalin wani abu mai ƙarfi da aka watsa a cikin gas shine aerosol.
A cikin masana'antu daban -daban, ana amfani da abubuwa kamar surfactants da thickeners don hana daskararru a cikin cakuda su daidaita.
Mutane da yawa suna buƙatar gauraya ko girgiza don komawa zuwa ga dakatarwar su.
Sun bambanta da mafita saboda tsayayyun barbashi sun fi girma, kuma a cikin mafita m yana narkewa cikin ruwa, yana haifar da cakuda iri ɗaya.
Sun bambanta da colloids, saboda a cikinsu daskararren barbashi ya fi kyau (diamita tsakanin 10⁻⁹ da 10⁻⁵ nanometer).
Abubuwan da suka haɗa ta ana iya raba su ta hanyoyin jiki kamar tacewa, centrifugation da decantation.