Yadda za a zabi redispersible polymer foda?

Yadda za a zabi redispersible polymer foda?

Babu wata hanya mai tasiri face sanya samfurin a cikin gwaji.

Zaɓin foda na latex mai dacewa ya kamata yayi la'akari da waɗannan abubuwan:

1. Gilashin canjin zafin jiki na foda polymer foda.

Gilashin canjin zafin jiki shine cewa polymer yana nuna elasticity; a ƙarƙashin wannan zafin jiki, polymer yana nuna brittleness. Gilashin canji zafin jiki na janar latex foda shine -15±5℃, da kuma latex foda na masana'antun yau da kullum ba su da wannan ma'anar. Matsala. Matsakaicin canjin gilashin shine babban mai nuna alama na zahirin kaddarorin foda na latex wanda za'a iya rarrabawa. Don takamaiman samfuri, zaɓi mai ma'ana na zafin canjin gilashin na foda mai yuwuwar sake tarwatsewa yana dacewa don haɓaka sassaucin samfurin da guje wa matsaloli kamar fatattaka.

2. Mafi ƙarancin fim ɗin zafin jiki

Bayan an haɗa foda na latex wanda za'a iya sakewa da ruwa kuma an sake dawo da shi, yana da kama da kamannin emulsion na asali, wato, za a samar da fim bayan ruwan ya ƙafe. Wannan fim yana da babban sassauci kuma mai kyau adhesion zuwa daban-daban substrates. Daban-daban Matsakaicin yanayin zafin fim na latex foda da masana'anta ke samarwa zai ɗan bambanta. Fihirisar wasu masana'antun shine 0°C, kuma index na wasu masana'antun shine 5°C. Idan dai yanayin zafin fim ɗin foda na latex mai inganci yana tsakanin 0 da 5°C tsakanin.

3. Sake warwarewa.

Ƙofar latex mara kyau da za a iya tarwatsawa ba ta da ƙarfi a cikin ruwan sanyi ko ruwan alkaline.

4. Farashin.

A m abun ciki na emulsion ne game da 53%, wanda ke nufin cewa game da 1.9 ton na emulsion aka warke a cikin daya ton na roba foda.

Idan aka kirga abun cikin ruwa 2%, to ana amfani da ton 1.7 na emulsion don yin tan guda na foda na roba, da 10% na abun cikin ash.

Yana ɗaukar kimanin tan 1.5 na emulsion don samar da tan ɗaya na foda na roba.

5. Maganin ruwa na latex foda

Don gwada danko naredispersible polymer foda, wasu kwastomomi ne kawai suka narkar da fodar latex a cikin ruwa kuma suna motsa shi da hannu don gwada shi, kuma sun gano cewa babu makanta, suna tunanin cewa ba ainihin foda ba ne.

A gaskiya ma, foda da za a iya tarwatsawa kanta ba ta daɗe ba, foda ce da aka kafa bayan an fesa-bushe polymer emulsion.

Lokacin da redispersible latex foda aka gauraye da ruwa da kuma sake-emulsified, yana da wannan kaddarorin kamar yadda na asali emulsion, wato, fim da aka kafa bayan da ruwa evaporates yana da babban sassauci kuma yana da matukar kyau adhesion zuwa daban-daban substrates.

Hakanan zai iya haɓaka riƙewar ruwa na abu, hana turmin siminti daga taurin da sauri da sauri, bushe da fashe; ƙara robobi na turmi da inganta aikin ginin. Watsawa, abubuwan ƙirƙirar fim, sassauci (ciki har da gwajin cirewa, ko ƙarfin asali ya cancanta) gabaɗaya, sakamakon gwajin zai kasance bayan kwanaki 10.