Ponena za vuto lomwe ufa wa putty ndi wosavuta ufa, kapena mphamvu sikokwanira. Monga tonse tikudziwa, ma cellulose ether ayenera kuwonjezeredwa kuti apange ufa, hpmc amagwiritsidwa ntchito khoma la khoma, ndipo ogwiritsa ntchito ambiri sawonjezera ufa wopangidwa ndi masamba. Anthu ambiri sakuwapatsa polimer ufa kuti apulumutse ndalama, koma izi ndi njira yofunikira chifukwa cha chifukwa chake mawonekedwe wamba ndiosavuta kufesa ndikukhala ndi mavuto abwino!
Mafuta wamba (monga 821 STY) amapangidwa makamaka ndi ufa wofiirira, ufa wamng'ono wowuma, hydroxymethyl cellulose), ndipo zina zimapangidwa ndi methyl cellulose ndi shuangfei ufa. Izi sizimaluma ndipo sikuti madzi osagwira.
Ma cellulose amatha kumwa madzi ndikutupa atasungunuka m'madzi. Zogulitsa zogulitsa zosiyanasiyana zimakhala ndi mayamwidwe osiyanasiyana amadzi. Cellulose amatenga nawo gawo pamadzi osamala ambiri. Makulidwe owuma okha ali ndi mphamvu zina kwakanthawi, ndipo pang'onopang'ono de-ufa patapita nthawi yayitali. Izi ndizogwirizana kwambiri ndi kapangidwe ka ma celluluse omwe. Ma batini oterewa ndi omasuka, ali ndi mayamwidwe amadzi ambiri amakhala osavuta, alibe mphamvu, ndipo alibe matenda. Ngati topcoat ikugwiritsidwa ntchito pamwamba, yotsika PVC ndiyosavuta kuphulika ndi thovu; Right PVC ndikosavuta kuvuta komanso kuswa; Chifukwa cha mayamwidwe amadzi ambiri, zimakhudza mawonekedwe a makanema ndi ntchito yomanga pamwamba pa torkcoat.
Ngati mukufuna kusintha mavuto omwe ali pamwambawa, mutha kusintha mawonekedwe, onjezerani ufa wobwezeretsedwa bwino kuti musinthe mphamvu ya chitetezo cha pathyole, ndikusankha ma hydroxypropyl methylcellulose hpmc ndi mtundu wotsimikizika.
Mukupanga nkhuni, ngati kuchuluka kwa ufa wa latx wowonjezeredwa sikokwanira, kapena ngati ufa wotsika wa purty umagwiritsidwa ntchito, chizikhudza bwanji ufa?
Mawonekedwe osakwanira a Matatex osinthika, mawonetseredwe mwachindunji ndikuti purting yotayirira, kuchuluka kwa penti yomwe imagwiritsidwa ntchito poyambira, katunduyo ndi wosauka pambuyo popanga filimu, ndipo Ndikosavuta kupanga filimu yopendekera. Makoma oterowo amakonda kusamba, kukulirana, kusenda, ndi kuwonongeka kwa filimu ya utoto. Ngati mungasankhe ufa wotsika mtengo, zikuonekeratu kuti mipweya yoipa monga formaldehyde yopangidwa pakhoma idzavulaza ena.
Post Nthawi: Jun-15-2023