Putty for building can be divided into ordinary putty and water-resistant putty. Ordinary putty is special for indoor use and generally consists of calcium bicarbonate powder and rubber powder. The main component of calcium powder is calcium carbonate, also known as fine powder ground by stone; There will be no formaldehyde in it. Modified starch glue and carboxymethyl cellulose used in the production of interior wall putty are basically oil-free solvents, so they will not contain formaldehyde. Water-resistant putty is made of lime-calcium powder or cement as inorganic cementing material, heavy calcium powder as filler and additives such as redispersible latex powder and hydroxypropyl methylcellulose. The main component of lime calcium powder is calcium hydroxide, which is known to all and cannot contain formaldehyde.
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