Method for preparing surface layer gypsum plaster by utilizing reclaimed gypsum and prepared surface layer gypsum plaster
A plaster plaster and gypsum technology, which is applied in the field of plaster plaster on the surface, can solve the problems of low strength and large water demand, and achieve the effects of not easy to fall off, cost saving, and environmental protection
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Embodiment 1
[0030] A kind of method that utilizes regenerated gypsum to prepare surface layer plaster, raw material is composed of: regenerated gypsum 1000kg, sodium tripolyphosphate 6kg, hydroxypropyl methyl cellulose ether (that is, hydroxypropyl methyl cellulose, purchased from Luzhou Tianpu Fine chemical plant, the same below) 3kg, redispersible latex powder (Germany WACKER redispersible latex powder 5044N) 20kg, mix all raw materials evenly, add to 550kg water and mix well before use, without adding desulfurization gypsum , natural gypsum and water reducer.
Embodiment 2
[0032] A kind of method that utilizes regenerated gypsum to prepare surface layer plastering plaster, raw material is composed of: regenerated gypsum 600kg, natural construction gypsum 400kg, sodium tripolyphosphate 5kg, hydroxypropyl methyl cellulose ether 2kg, redispersible latex powder 15kg, will After the raw materials are mixed evenly, add them into 530kg of water and mix well before use.
Embodiment 3
[0034] A method for preparing surface plaster plaster with recycled gypsum. The raw materials are: 800kg of recycled gypsum, 100kg of desulfurized building gypsum, 100kg of natural building gypsum, 5kg of sodium tripolyphosphate, 2kg of hydroxypropyl methyl cellulose ether, and redispersible Latex powder 15kg, polycarboxylate superplasticizer (purchased from Melflux of BASF, Germany) ® 1641F, the same below) 0.5kg, mix all raw materials evenly, add to 500kg water and mix well before use.
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