Environmental-protection type gypsum-based putty powder for building

Abstract

The present invention relates to an environment-protecting gypsum base building putty powder, which uses building gupsum as main setting hardening component, and utilizes the composite retarding agent to resolve the problems of that the building gupsum can be quickly set and hardened and single retarding agent can be resulted into large strength loss. Said invention adopts inorganic mineral powder and cellulose ether composition to reduce material cost and improve water-holding property of putty, and adopts water-soluble adhesive powder to raise cohesional strength of building putty, and said environment-protecting type gypsum base building putty powder is a single component solid powder, has no harmful substance, and has good construction property, and said putty surface is fine and smooth.

Description

Technical field:

[0001] The invention belongs to building materials, which are used as putty for inner walls of buildings. Background technique:

[0002] Traditional construction putty mainly uses inorganic inert minerals as fillers and organic polymers as film-forming substances. The curing of putty depends entirely on polymer film formation. This type of building putty has low bonding strength and large shrinkage, and is generally only suitable for construction on relatively flat walls. If the thickness is too large, it is easy to crack; construction efficiency is low, drying is slow, and construction period is long; It is inconvenient to prepare and use; some putty releases toxic substances such as formaldehyde during construction and use, the construction environment is harsh, and the environment is polluted. And the traditional construction putty usually adopts a single water-retaining agent technology, that is, cellulose ether water-retaining, and its cost is relative...