Mphamvu ya cellulose ether pa pulasitiki wopanda shrinkage wamatope

1. Mbiri yofufuza za zotsatira zacellulose etherpa pulasitiki wopanda shrinkage wamatope

Tondo ndi chinthu chomwe chimagwiritsidwa ntchito kwambiri pantchito yomanga, ndipo kukhazikika kwa kamangidwe kake kumakhudza kwambiri momwe nyumba zilili. Pulasitiki yaulere ya shrinkage ndizochitika zomwe zingachitike mumatope musanawumitsidwe, zomwe zingayambitse mavuto monga ming'alu mumatope, zomwe zimakhudza kulimba kwake ndi kukongola kwake. Cellulose ether, monga chowonjezera chomwe chimagwiritsidwa ntchito nthawi zambiri mumatope, chimakhala ndi chikoka chachikulu pakuchepa kwa matope opanda matope.

2. Mfundo ya cellulose ether kuchepetsa pulasitiki free shrinkage ya matope

Cellulose ether imakhala ndi madzi abwino kwambiri. Kutayika kwamadzi mumatope ndi chinthu chofunikira chomwe chimatsogolera ku kuchepa kwa pulasitiki. Magulu a hydroxyl pa mamolekyu a cellulose ether ndi maatomu a okosijeni pamabondi a ether apanga zomangira za haidrojeni ndi mamolekyu amadzi, kutembenuza madzi aulere kukhala madzi omangika, potero amachepetsa kutaya kwa madzi. Mwachitsanzo, m'maphunziro ena, adapezeka kuti pakuwonjezeka kwa mlingo wa cellulose ether, kutayika kwa madzi mumatope kunachepa. Mongamethyl hydroxypropyl cellulose ether (HPMC), pamene mlingo ndi 0.1-0.4 (chigawo cha misa), ukhoza kuchepetsa kutayika kwa madzi kwa matope a simenti ndi 9-29%.

Ma cellulose ether amawongolera mawonekedwe a rheological, mawonekedwe a porous network komanso kuthamanga kwa osmotic kwa phala la simenti yatsopano, ndipo mawonekedwe ake opanga filimu amalepheretsa kufalikira kwa madzi. Njira zotsatizanazi zimachepetsa kupsinjika komwe kumabwera chifukwa cha kusintha kwa chinyezi mumtondo, potero kulepheretsa kuchepa kwa pulasitiki kwaulere.

3. Mphamvu ya mlingo wa cellulose ether pa pulasitiki wopanda shrinkage wamatope

Kafukufuku wasonyeza kuti pulasitiki wopanda shrinkage wa simenti matope amachepetsa motsatana ndi kuwonjezeka kwa cellulose ether mlingo. Kutenga HPMC mwachitsanzo, pamene mlingo ndi 0.1-0.4 (chigawo cha misa), pulasitiki yaulere ya shrinkage ya matope a simenti ikhoza kuchepetsedwa ndi 30-50%. Izi zili choncho chifukwa pamene mlingo ukuwonjezeka, mphamvu yake yosungira madzi ndi zotsatira zina zolepheretsa kuchepa zikupitiriza kuwonjezeka.

Komabe, mlingo wa cellulose ether sungakhoze kuonjezedwa mpaka kalekale. Kumbali imodzi, kuchokera kuzinthu zachuma, kuwonjezera kwambiri kudzawonjezera mtengo; Komano, kuchuluka kwa cellulose ether kumatha kukhala ndi zotsatira zoyipa pazinthu zina zamatope, monga mphamvu ya matope.

4. Tanthauzo la chikoka cha cellulose ether pa pulasitiki free shrinkage ya matope

Malinga ndi momwe ntchito yopangira uinjiniya imagwirira ntchito, kuphatikiza koyenera kwa cellulose ether kumatope kumatha kuchepetsa kuchepa kwa pulasitiki kwaulere, potero kuchepetsa kuchitika kwa ming'alu yamatope. Izi ndizofunikira kwambiri pakuwongolera bwino kwanyumba, makamaka popititsa patsogolo kulimba kwa nyumba monga makoma.

Mu ntchito zina zapadera ndi zofunika mkulu matope khalidwe, monga ena apamwamba-mapeto nyumba zogona ndi nyumba zikuluzikulu za anthu, ndi kulamulira chikoka cha mapalo etere pa pulasitiki free shrinkage matope, zikhoza kuonetsetsa kuti ntchitoyo akukumana ndi mfundo zapamwamba. .

5. Zoyembekeza zofufuza

Ngakhale kuti pakhala pali zotsatira zina za kafukufuku pa chikoka cha cellulose ether pa pulasitiki free shrinkage of mortar, pali mbali zambiri zomwe zingathe kufufuzidwa mozama. Mwachitsanzo, chikoka limagwirira a mitundu yosiyanasiyana ya mapadi etha pa pulasitiki free shrinkage matope pamene amachita pamodzi ndi zina.

Ndi chitukuko chosalekeza cha ukadaulo wa zomangamanga, zofunikira pakugwirira ntchito kwamatope zikuchulukirachulukira. Kufufuza kwina kumafunikanso momwe mungayendetsere molondola kugwiritsa ntchito cellulose ether mumatope kuti mukwaniritse zotsatira zabwino zolepheretsa kutsika kwa pulasitiki kwaulere ndikuganiziranso zinthu zina zamatope.