Kullin PVA: nau'ikan siffofin da iri

A halin yanzu, manne PVA shine mafi yawan nau'in gwanin da ake amfani dashi a wurare da dama. Ana amfani da matsayin schoolboys a darussa na aikin da kuma masu sana'a magina domin shigarwa na yumbu fale-falen. An bayyana fifitaccen abu na wannan abu ta hanyar sauki da saukaka amfani da shi, rashin asarar haɗari da kuma farashi mai mahimmanci.

Kullin PVA na gargajiya shine nau'i mai launi, maimakon abu mai launi mai launi, wanda yake da babban ƙarfin (lokacin da glued) da sanyi mai sanyi.

Kamfanoni na zamani suna samar da irin wannan samfurin, wanda ya bambanta da abun da ke ciki da kuma a cikin nauyin kayan aiki, bisa ga daidaitattun ruwa. Zaɓin wannan ko kuma abin da ya dace ya dogara ne akan filin amfani da kuma takamaiman halaye na waɗannan kayan da za'a haɗa tare. Sakamakon karshe ya dogara da wannan.

PVA manne duniya yana da irin wannan halaye kamar yadda m karfin daidaita 400-450 N / m, low man fetur amfani, kewayon daga ɗaya da ɗari tara grams da murabba'in mita (dangane da irin aikin), wani babban jure sanyi, fiye da hudu hawan keke bangaren .

Bugu da ƙari, yana da daraja lura da lokacin tsaftacewa, yawanci bai wuce sa'o'i ashirin da hudu ba, kuma tsawon rayuwa mai tsawo - shida zuwa bakwai.

A yau, man fetur na PVA ya sami aikace-aikacensa a cikin ayyuka daban-daban. Its amfani da kwanciya da yumbu fale-falen, da kuma a shafi wallpapered ganuwar, kuma ko da a matsayin dauri ƙari a gilashin masana'antu.

Clerical manne, da kalla mai guba na duk wasu nau'in amfani ga hade takarda, kwali da kuma hotuna. Joiner, wanda yana da babban jigon ruwa da kyakkyawan haɗuwa, ana amfani dasu yayin aiki tare da kayan aiki da dama. Ma'anar "Lokacin", wanda yake da matsakaicin lokacin latsawa, ana amfani da shi don laminate launi da zane. Bugu da ƙari, akwai nau'in PVA na musamman don itace da kayayyakin fata. Irin wannan samfurin kuma wajibi ne wacce take wajibi don mahimmanci da kayan haya.

Akwai kuma manne, an tsara ta musamman ga yakoki yadudduka da bene, mai amfani da PVA wanda yayi amfani da shi wajen samar da kayayyakin gini, da kuma masana'antu da masana'antu. Sakamakon haka ya bambanta ta hanyar ƙwarewar karfi.

Tsabtace muhalli, aminci da kuma farashi mai araha sa kowane ɗayan abubuwan da aka lissafa su kayan aiki mai amfani. A hanyar, wannan ya bayyana daya daga cikin dalilan da yake da fifiko sosai. A bisa mahimmanci, har ma da samar da "filaye mai mahimmanci" - abin wasa na yara na musamman wanda zai iya canja jihar kuma ya ɗauki kowane nau'i.

Bayani mai mahimmanci a kan wasu samfurori irin wannan shine ainihin mahimmancin yau da masana'antun suke ƙoƙarin inganta yanayin da ake amfani da man fetur na PVA, kuma kada su ƙirƙiri sababbin adhesives.