CN100335569C

CN100335569C - Anticracking putty inner wall for

Info

Publication number: CN100335569C
Application number: CNB031011799A
Authority: CN
Inventors: 张瑾璐; 何唯平
Original assignee: Shenzhen Oceanpower Industrial Co Ltd
Current assignee: Shenzhen Oceanpower Industrial Co Ltd
Priority date: 2003-01-16
Filing date: 2003-01-16
Publication date: 2007-09-05
Anticipated expiration: 2023-01-16
Also published as: CN1517413A

Abstract

The present invention discloses a crack resistant putty for an inner wall, which comprises 10 to 15 wt% of water, 5 to 10 wt% of organic high molecular polymers, 50 to 70 wt% of fillers, 0.1 to 0.5 wt% of auxiliary agents, 10 to 30 wt% of regulation materials and 1 to 5 wt% of fiber materials. Due to the fact that the solid content of a system is high, the fact that the plastering of the putty can reach certain thickness once is ensured, and thus, construction efficiency is enhanced and construction cost is lowered. What is more, due to the fact that the fiber materials with good reinforcing effects are added, and the crack resistance of the system of the putty is enhanced. In addition, the putty also has the advantages of quick drying, easy grinding, good adhesion force, environmental protection, no pollution, and the like, and thus, the defects of the easy crack, the pulverization, the insufficient batch scraping thickness, the graining, and the like of the traditional putty for an inner wall are overcome.

Description

A kind of splitting resistance inner wall putty

Technical field the present invention relates to a kind of building coating, especially a kind of splitting resistance putty of using of inner wall of building.

Background technology in a sense, building coating is a kind of work in-process, through the construction film forming be only final finished attached to the coating on the basal plane.In this process,, in metope basic unit and play the vital role of bonding transition between filming, bearing the important function that prevents metope cracking, the peeling of filming simultaneously though putty is the supplementary material in the building coating coating process.

At present there are a lot of problems in used wall surface putty on the inner wall of building,, efflorescence easy to crack such as construction, batch scrapes thickness deficiency, seediness or the like, and the variation owing to temperature, humidity simultaneously produces cracking.These problems and then will cause the application metope disadvantages such as paint film to occur have had a strong impact on the quality of inner wall of building.

Summary of the invention for fundamentally avoid the metope of application interior wall to ftracture, peeling, shedding and quality problems such as peel off, the selection of supplementary material---putty is very important.The invention discloses a kind of inner wall putty of splitting resistance, this putty has advantages such as thick matter, fast dried, easy polishing, strong adhesion, has strengthened its splitting resistance greatly.

This inner wall putty is by the 10-15% water of counting by weight percentage, the organic high molecular polymer of 5-10%, and the stopping composition of 50-70%, the auxiliary agent of 0.1-0.5%, the adjusting material of 10-30%, the filamentary material of 1-5% is formed, wherein:

Organic high molecular polymer is the copolymer emulsion based on vinyl acetate.Generally can select for use solid content at 45-60%, the acrylate copolymer emulsion of minimum film-forming temperature about 10 ℃ also can be with emulsions such as pure third, phenylpropyl alcohol and vinegar third, vinegar uncles.

Stopping composition is made up of the coarse whiting of 50-70% and the kaolin of 30-50%.Also can adopt the fines of mineral such as lime carbonate, talcum powder, mica as stopping composition.

Used auxiliary agent is mainly sanitas; To guarantee that putty corruption can not take place in storage process.

Used adjusting material can be selected the cellulose family product for use, mainly is the aqueous solution of adjusting the Natvosol of system viscosity.

Used fiber is that length is the polyacrylonitrile fibre of 1.0-3.0mm; The cross-sectional shape of this fiber is the peanut shape, vertically is the parallel cylindrical cylindricality, and length is the 0.5-12.0 millimeter, and fineness is the 1.5-2.5 dtex, and density is 1.18g/cm ³It is big to have fiber number, characteristics such as intensity height (tensile strength is more than 300Mpa), ductility good (limit elongation is 14-20%), good hydrophilic property, acid-alkali-corrosive-resisting, weathering resistance, photostabilization are good.

In the time of preparation, earlier emulsion is added to the water under stirring condition, simultaneously sanitas is added, add dicalcium powder and kaolin then, when system viscosity is big, the cellulose aqueous solution that can add half amount earlier then adds stopping composition, after stopping composition all adds, again remaining cellulose aqueous solution is added, then high speed dispersion is even, adds staple fibre at last, has promptly finished the preparation of this prescription putty after being uniformly dispersed.

Selected starting material in the prescription of the present invention, improved the solid content of finished product, added polyacrylonitrile staple fibre simultaneously with strengthening action, these measures make the putty produce can guarantee that enough once criticizing scrape thickness, effectively prevent the putty layer cracking, and then reduced the probability of coating cracking, improved the quality of finishing system.Compare with traditional inner wall putty, the putty that uses this prescription to produce has advantages such as thick matter, fast dried, easy polishing, strong adhesion, and environment friendly and pollution-free, easy to use, can be widely used in the interior wall coating finishing system, especially to the demanding place of splitting resistance.

Embodiment

Embodiment:

Prepare this inner wall putty by following weight percent:

12.8% water;

8.0% organic high molecular polymer emulsion 3502 (Eternal);

34% 400# water-ground limestone;

25% water-washed kaoline (Maoming);

0.2% sanitas LFM (Cognis);

2% aqueous solution of 18% Natvosol HBR250 (Ya Kualong);

2.0% 2mm filamentary material (road prestige 2000).

Use the scraper blade coating on the asbestos model putty for preparing, the putty sample of staple fibre is not added in contrast simultaneously, finds the model moderate drying speed of blade coating putty of the present invention, and without any cracking phenomena, grinability is good, and sticking power is good.This experimental result has illustrated that this inner wall putty has advantages such as easy polishing, strong adhesion, compares with traditional putty, and splitting resistance is obviously strengthened.

Claims

1, a kind of splitting resistance inner wall putty is counted by weight percentage, and component consists of:

Water 12.8%;

Organic high molecular polymer 8%;

Stopping composition 59%;

Auxiliary agent 0.2%;

Regulate material 18%;

Filamentary material 2%;

Wherein organic high molecular polymer is the copolymer emulsion based on vinyl acetate; Stopping composition is that 50～70% coarse whiting and 30～50% kaolin are formed by weight percent; Auxiliary agent is mainly sanitas; Regulating material mainly is the aqueous solution of Natvosol; Filamentary material is that length is the polyacrylonitrile fibre of 2.0mm, and the cross-sectional shape of this fiber is the peanut shape, vertically is the parallel cylindrical cylindricality, and fineness is 1.5～2.5 dtexs, and density is 1.18g/cm ³