CN102627881B - Pure natural putty for exterior walls of buildings - Google Patents

Abstract

The invention relates to pure natural putty for exterior walls of buildings, and the putty is composed of the following raw materials by weight: 50-15o parts of white cement, 250-400 parts of lime putty, 110-150 parts of quartz sand, 4.2-6.9 parts of alum, 150-250 parts of white stone powder, 0.5-1.5 parts of rubber tree sap, and 20-40 parts of water. The preparation steps are: (1) crushing white stone powder, alum and quartz sand; (2) mixing white cement and lime putty and putting them into a mixer, adding the crushed white stone powder, alum and quartz sand in order, then adding rubber tree sap and mixing them uniformly; and (3) adding water into the discharged mixed dry and solid mixture, and performing concoction so as to obtain the pure natural putty for exterior walls of buildings. In step (1), the quartz sand is a particle able to be sieve through a sieve of 600 meshes. The putty provided in the invention has good technical performance and low cost, employs raw materials that are natural, nontoxic and harmless, and can save resources and protect the environment, thus being widely applied in batch embedded layer treatment in exterior wall finishing projects of various buildings.

Description

A kind of pure natural external wall putty

Technical field

The present invention relates to the wash primer of external wall coating engineering, especially relate to a kind of putty of natural type external wall.

Background technology

Putty (cry and filler again) is a kind of decoration gel material of smooth surface of wall, is a kind of thick slurry coating material, is that coating whitewashes front requisite a kind of product.As everyone knows, it is first to use after slaked lime levelling that common putty is criticized embedding, then criticizes common putty (old powder, batch wall ash), and so way, buries much hidden danger.Slaked lime in metope can with airborne carbon dioxide reaction, generate calcium carbonate, volumetric expansion, causes metope cracking and produces wall leakage phenomenon, the normal daily life that jeopardizes resident.Although building putties is a kind of base treatment material, its amount of being is large and wide, is a kind of material of construction that must attract great attention.The inner wall putty that past China's wide geographic area is produced generally adopts polyvinyl alcohol 801 glue, and carboxymethyl cellulose mixes the powder body materials such as dry powder, talcum powder.Although when import rubber powder and emulsion mixed powder material cost are low, but complex process, cost is higher.Particularly contain a large amount of objectionable impuritiess such as formaldehyde, can cause people's neural system impaired, when serious, can cause poisoningly and carcinogenic, to infant and elderly and infirm, endanger larger.

Summary of the invention

The problems referred to above that exist for prior art, the applicant provides a kind of pure natural external wall putty.The present invention has good technical feature, and cost is low, and raw materials Nantural non-toxic, without harm, can economize on resources, protection of the environment, and batch inlay that can be widely used in the external-wall coating engineering of all kinds of buildings is processed.

Technical scheme of the present invention is as follows:

A pure natural external wall putty, is comprised of the raw material of following weight part: 50 ~ 150 parts of white cements, 250 ~ 400 parts of lime putties, 110 ~ 150 parts of quartz sands, 4.2 ~ 6.9 parts, alum, 150 ~ 250 parts of white stone powders, 0.5 ~ 1.5 part of rubber myron, 20 ~ 40 parts, water.Preparation process is as follows:

(1) white stone powder, alum, quartz sand are pulverized;

(2) white cement, lime putty are mixed, drop in stirrer, then the white stone powder crushing, alum, quartz sand are dropped into successively, then add rubber myron to stir;

(3) stir mixing after discharging and do solid state again through adding the step of water, modulation obtains pure natural external wall putty finished product.

In step (1), it by described quartz sand, is the particle that can cross 600 mesh sieves.

The technique effect that the present invention is useful is:

In raw material of the present invention, added quartz sand, quartz sand is a kind of nonmetallic mineral, is a kind of silicate minerals of hard, wear-resisting, stable chemical performance, and its essential mineral composition is SiO ₂, the color of quartz sand is oyster white or colourless translucent.With the unified standard sieve screening of 600 object countries, its intensity is high, and stability is strong, can effectively avoid batch inlay cracking.

In the raw material of product of the present invention, added rubber myron as jointing compound, rubber juice has good activity and bonding capacity.In addition, rubber myron is natural matter, nonpoisonous and tasteless, cheap, meets the requirement of recycling economy and environment protection.

In the raw material of product of the present invention, added alum as agglutinate, its effective constituent is Al ₂o ₃, SO ₃, can react with cement-hydrate, generate ettringite, can accelerate the α-TCP bone cement of cement.In addition, the waterproof action of alum has improved the performance of the water-tight corrosion-proof of putty.

In the raw material of product of the present invention, added white stone powder as strengthening agent, white stone powder is to form through mechanical disintegration, screening with white marble and calcite, and calcium carbonate content is high, and purity and whiteness are very high, fine size (5 ~ 1250 order), strong covering power, be particularly useful for putty powder.In addition, there is levelling, anti-abrasive property and certain opacifying power, can also improve processing characteristics and the effect of playing reinforcement and half reinforcement.

In the raw material of product of the present invention, added white cement as binding agent and water-resisting agent, white cement is the abbreviation of white portland cement, it is to take Calucium Silicate powder as major ingredient, the few portland cement clinker of iron degree content, through bleaching, adds material in the rigid gelling of the levigate white of making of appropriate gypsum.White cement has certain waterproof action in addition, also can be used for improving the water resistance of putty.

In product of the present invention, added lime putty, its main component is Ca (OH) ₂, there is strong basicity, can make the protein component of bacterium lose activity, raw material is carried out disinfection.In addition, lime putty can strengthen the workability of mixture, makes putty be difficult for dispersing, good water-retaining property.

Product of the present invention can avoid batch inlay and basic unit to come off, batch inlay surface blistering, and the problem of cracking, has good effect to improving the decorative quality of coating.

Embodiment

The inventive method is implemented according to following steps:

(1) white stone powder, alum, quartz sand are ground into fine particle shape with pulverizer, wherein 600 object countries unified standard sieve screening for quartz sand;

(2) white cement, lime putty are mixed, drop in stirrer, then the white stone powder crushing, alum, quartz sand amount is according to a certain ratio dropped into successively, then add rubber myron uniform stirring 70 ~ 150 seconds;

(3) stir mixing after discharging and do solid state again through adding the step of water, be modulated into thick liquid shape finished product.

Constructing operation step of the present invention is:

Exterior wall is crossed after cleaning, when temperature watering on the wall in 5 days in advance during at 2 ~ 10 ℃; Temperature is watering on the wall in 3 days in advance in the time of 10 ~ 25 ℃; Temperature was sprinkled water in when more than 25 ℃ for 1 day in advance on the wall.Then with the bottoming of whitewashing that product of the present invention carries out exterior wall, strike off (silt content is no more than 5%).Exterior wall before whitewashing first the woven wire with 0.15cm be fixed on concrete face and brick wall intersection, by 1:2.5 sand-cement slurry, whitewash, with the long floating rule of 2.5m, strike off, then use headblock smooth.

Product embodiments 1 to embodiment 4 of the present invention raw material weight umber used is in Table 1, and unit is kg.

Table 1

Embodiment 1 ~ 4 raw material sources used are shown in Table 2.

Table 2

According to standard GB/T/T 23455-2009, embodiment 1 is detected, detected result is as shown in table 3.

Table 3

Claims (3)

1. a pure natural external wall putty, is characterized in that being comprised of the raw material of following weight part: 50 ~ 150 parts of white cements, 250 ~ 400 parts of lime putties, 110 ~ 150 parts of quartz sands, 4.2 ~ 6.9 parts, alum, 150 ~ 250 parts of white stone powders, 0.5 ~ 1.5 part of rubber myron, 20 ~ 40 parts, water.

2. pure natural external wall putty according to claim 1, is characterized in that preparation process is as follows:

(1) white stone powder, alum, quartz sand are pulverized;

(2) white cement, lime putty are mixed, drop in stirrer, then the white stone powder crushing, alum, quartz sand are dropped into successively, then add rubber myron to stir;

(3) stir mixing after discharging and do solid state again through adding the step of water, modulation obtains pure natural external wall putty finished product.

3. pure natural external wall putty according to claim 2, is characterized in that in step (1), is the particle that can cross 600 mesh sieves by described quartz sand.