A kind of artificial marble sawdust exterior wall flexible putty

A technology of artificial marble and sawdust, which is applied in the field of flexible putty for exterior walls of artificial marble sawdust, can solve the problems of loss of decorative and protective functions of the coating, affect the normal use of buildings, and poor performance, so as to improve flexibility and water resistance, Excellent two-way affinity and good workability

Active Publication Date: 2019-09-10
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of poor performance exterior wall putty will cause the wall surface to fall off, hollow, and crack soon after the project is delivered, and the partial or large-area coating will lose its original decoration and protection functions, seriously affecting the normal use of the building.

Method used

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  • A kind of artificial marble sawdust exterior wall flexible putty
  • A kind of artificial marble sawdust exterior wall flexible putty
  • A kind of artificial marble sawdust exterior wall flexible putty

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of artificial marble sawdust exterior wall flexible putty, its composition is by mass parts:

[0026]

[0027] Wherein the cement is Portland cement; the sawdust is sawdust produced during the cutting of organic polymer artificial marble, the maximum particle size is <80 mesh, and the moisture content is ≤0.2%; the thixotropic lubricant is sodium-based bentonite; the water-retaining agent is hydroxyethyl methyl cellulose ether; the polymer powder is vinyl acetate and ethylene copolymer latex powder, with a solid content of ≥98% and a fineness of 0.5-8 μm; the hydrophobic The water agent is a silicone water repellent.

[0028] Stir the above raw materials evenly, add water and stir until it becomes a paste, and then the marble sawdust exterior wall flexible putty is prepared; the bonding strength with the mortar is as high as 0.9MPa, the diameter is 50mm without cracks, and the performance meets the requirements of GB / T 23455-2009.

Embodiment 2

[0030] A kind of artificial marble sawdust exterior wall flexible putty, its composition is by mass parts:

[0031]

[0032] Wherein the cement is white Portland cement; the sawdust is sawdust produced during the cutting of organic polymer artificial marble, the maximum particle size is <80 mesh, and the water content is ≤0.2%; the thixotropic lubricant is sodium A mixture of base bentonite and metakaolin; the water-retaining agent is hydroxypropyl methylcellulose ether; the polymer powder is vinyl acetate and ethylene copolymer latex powder, with a solid content of ≥98% and a fineness of 0.5- 8 μm; the described hydrophobic agent is a calcium stearate hydrophobic agent; the described retarder is a mixture of tartaric acid and sodium citrate; the described polymer emulsion is an acrylic acid emulsion; calcium hydroxide in the described ash calcium The mass percentage of ≥ 90%, the maximum particle size < 80 mesh; the length of the wood fiber < 1mm, the ash content < 12%; th...

Embodiment 3

[0035] A kind of artificial marble sawdust exterior wall flexible putty, its composition is by mass parts:

[0036]

[0037] Wherein the cement is white Portland cement; the sawdust is sawdust produced during the cutting of organic polymer artificial marble, the maximum particle size is <80 mesh, and the water content is ≤0.2%; the thixotropic lubricant is sodium A mixture of base bentonite and metakaolin; the water-retaining agent is hydroxypropyl methylcellulose ether; the polymer powder is vinyl acetate and ethylene copolymer latex powder, with a solid content of ≥98% and a fineness of 0.5- 8 μm; the water-repellent agent is a silicone water-repellent agent; the mass percentage of calcium hydroxide in the ash calcium is ≥90%, the maximum particle size is <80 mesh; the length of the wood fiber is <1 mm, and the ash content is <12% The length of the polypropylene fiber is 3-6 mm; the sand is 70-140 mesh dry sand; the putty powder additive is a commercially available putty ...

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Abstract

The invention provides artificial marble sawdust flexible putty for external walls. According to the formula, the flexible putty is prepared from the following raw materials in parts by mass: 20-40 parts of cement, 20-70 parts of sawdust, 0.2-3 parts of a thixotropic lubricant, 0.2-0.5 part of a water-retaining agent, 0.5-6 parts of polymer micelle powder and 0.05-0.3 part of a hydrophobic agent. The flexible putty is prepared by taking organic polymer artificial marble sawdust as filler; the prepared putty is good in flexibility and crack resistance, simple in production technology and low in cost, and can adapt to certain deformation of a base layer without cracking; the artificial marble sawdust flexible putty for the external walls is suitable for leveling construction of the base layer of a plastered wall surface, a concrete wall surface, an interlocked masonry wall surface, a gypsum board, an Eterpan and the like, and is good in compatibility with fluorocarbon paint, texture paint, really stone paint and the like and better in construction effect.

Description

technical field [0001] The invention relates to a flexible putty for artificial marble sawdust exterior walls, which belongs to the field of building materials. Background technique [0002] Putty powder is a kind of decorative material for leveling the surface of the wall. It is made of inorganic gelling material and finely processed with other additives. It is an indispensable product before painting. Putty is divided into two kinds: putty on interior wall and putty on exterior wall. External wall putty has higher requirements on durability than putty on interior wall. Most of the existing exterior wall putty powders are mixed with heavy calcium, white cement, organic additives, etc., and are mainly used for leveling the exterior walls. The base layer below the putty layer is generally a cement mortar layer. Due to the high rigidity of the cement mortar layer, microcracks are often produced under the action of hardening shrinkage, alternating dry and wet, or temperature ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/34
Inventor 高建明陈雪梅陈菲刘川北
Owner SOUTHEAST UNIV
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