Mannewa - menene wannan?

Akwai su da yawa ta hanyoyi daban daban na hulda tsakanin zahirin jikinsu. Daya daga wadannan shine mannewa surface. Bari mu dubi abin da wannan sabon abu da kuma abin da shi yana da kaddarorin.

Mene ne mannewa

A definition zama mafi bayyana idan muka gane yadda wannan kalma an kafa. Tare da Latin adhaesio fassara a matsayin "janye, mannewa, mannewa". Saboda haka, mannewa - ba kawai dangane da iri-irin takaice jikin da ya auku a su contact. Lokacin da uniform surface lamba, akwai wani musamman hali na hulda. Ya kira autohesion. A lokuta biyu yana yiwuwa ya zana wani sarari lokaci iyaka line tsakanin data abubuwa. A bambanci, asirce cohesion, a da mannewa kwayoyin a cikin kayan kanta. Don yin shi bayarda, la'akari da wani misali daga rayuwa. Dauki PVA manne da kuma talakawa ruwa. Sa'an nan amfani da su zuwa sassa daban daban na wannan gilashin surface. A wannan misali, ruwa ne mai abu wanda yake muhimmi matalauta mannewa. Yana da sauki duba ta hanyar juya gilashin juye. Cohesion ma characterizes ƙarfi wakili. Idan ka manne da guda biyu, daga gilashin da m, dangane zai zama abin dogara isa, amma a lokacin da ka hada su da plasticine, na karshe da hawaye a tsakiyar. Daga abin da za mu iya cewa ta cohesion ga wani karfi bond ba zai isa. Za mu iya cewa biyu daga cikin wadannan sojojin gaba da juna.

Iri mannewa da kuma dalilai shafi da ƙarfi

Dangane da abin da jiki amsa da juna, ya bayyana wasu siffofin na abin da aka makala. A mafi darajar wakiltar mannewa faruwa a cikin hulda da m surface. Wannan dukiya ne na m darajar a yi na daban-daban adhesives. Bugu da ƙari kuma, har yanzu asirce mannewa na daskararru da kuma taya. Da dama key dalilai za a iya gano cewa an kai tsaye ƙaddara da karfi tare da wanda zai bayyana mannewa. Wannan yanki na lamba, da yanayin da tuntužar jikuna da kaddarorin su saman. Bugu da kari, idan a kalla daya daga cikin biyu daga abubuwa Bears lantarki cajin cewa zai bayyana a cikin hulda da bayarwa-Mai karɓar bond, wanda zai inganta gogayya. A muhimmiyar rawa aka buga ta capillary sandaro na ruwa tururi a farfajiya. Saboda wannan sabon abu tsakanin substrate da kuma m iya faruwa sinadaran dauki cewa qara ikon sadarwa. Idan wani m jiki ya tsoma a cikin ruwa, za mu iya ganin sakamakon cewa ma sa mannewa - An wetting. Wannan sabon abu ne sau da yawa amfani da zanen, gluing, soldering, lubrication, enrichment kankara, da dai sauransu Don kawar mannewa man shafawa da ake amfani, wanda ya hana kai tsaye lamba na saman, da kuma karfafa shi, conversely, nuna kunnawa da surface da wani inji ko sinadaran magani, daukan hotuna zuwa electromagnetic radiation ko don ƙara daban-daban aikin impurities. Quantitatively, da mataki na irin wannan hulda da aka ƙaddara da karfi wanda dole ne a yi amfani domin raba tuntužar saman. Domin auna mannewa karfi, musamman na'urar kira wani adgeziometrami. The sosai guda ya kafa hanyoyin domin ta tabbatar da dalilin ne a san adgeziometrii.