CN102627881A - 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 again and filler) is a kind of decoration gel material of smooth surface of wall, is a kind of thick slurry coating material, is requisite a kind of product before coating whitewashes.As everyone knows, it is first with after the slaked lime levelling that common putty is criticized embedding, criticizes common putty (old powder, batch wall ash) again, and so way is buried many hidden danger.Slaked lime in the metope can react with carbon dioxide in air, generates lime carbonate, and volumetric expansion causes the metope cracking and generation body of wall seepage phenomenon, the normal daily life that jeopardizes the resident.Though building putties is a kind of base treatment material, its amount of being is big and wide, is a kind of material of construction that must attract great attention.The inner wall putty of past China's wide geographic area production generally adopts Z 150PH 801 glue, and CMC 99.5 mixes powder body materials such as dry powder, talcum powder.Though 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, can cause poisoning and carcinogenic when serious, bigger to infant and old person harm.

Summary of the invention

To the problems referred to above that prior art exists, the applicant provides a kind of pure natural external wall putty.The present invention has good technical performance, and cost is low, and used starting material Nantural non-toxic does not have harm, can economize on resources, and the protection environment, batch inlay that can be widely used in the external-wall coating engineering of all kinds of buildings is handled.

Technical scheme of the present invention is following:

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

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

(2) white cement, lime putty are mixed, drop in the stirrer, again the white stone powder that crushes, alum, silica sand are dropped into successively, add the rubber myron then and stir;

(3) mixing after the stirring discharging done solid-like again through adding the step of water, and modulation obtains pure natural external wall putty finished product.

In the step (1), be the particle that to cross 600 mesh sieves with said silica sand.

Beneficial technical effects of the present invention is:

Added silica sand in the raw material of the present invention, silica 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 silica sand is an oyster white or colourless translucent.With the unified standard sieve screening of 600 purposes country, its intensity is high, and stability is strong, can effectively avoid batch inlay cracking.

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

Added alum as agglutinate in the raw material of product of the present invention, its effective constituent is Al ₂O ₃, SO ₃, can react with cement-hydrate, generate ettringite, can quicken the aquation and the sclerosis of cement.In addition, the waterproof action of alum has improved the performance of the water-tight corrosion-proof of putty.

Added white stone powder as strengthening agent in the raw material of product of the present invention; 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 are particularly useful for putty powder.In addition, have levelling, anti-abrasive property and certain opacifying power, can also improve processing characteristics and the effect of playing reinforcement and half reinforcement.

Added white cement in the raw material of product of the present invention as sticker and water-resisting agent; White cement is the abbreviation of white portland cement; It is to be major ingredient with the Calucium Silicate powder; The few portland cement clinker of iron degree content is handled through bleaching, adds material in the levigate white rigid gelling of processing of an amount of gypsum.White cement has certain waterproof action in addition, also can be used for improving the water resistance of putty.

Added lime putty in the product of the present invention, its staple is Ca (OH) ₂, have strong basicity, the protein of bacteria composition is lost activity, raw material is carried out disinfection.In addition, lime putty can strengthen the workability of mixture, makes that putty is 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 rimose problem has effect preferably to the decorative quality that improves coating.

Embodiment

The inventive method is implemented according to following steps:

(1) white stone powder, alum, silica sand are ground into the fine particle shape with kibbler, wherein silica sand is with the unified standard sieve screening of 600 purposes country;

(2) white cement, lime putty are mixed, drop in the stirrer, again the white stone powder that crushes, alum, silica sand amount is according to a certain ratio dropped into successively, add the rubber myron then and evenly stirred 70 ~ 150 seconds;

(3) mixing after the stirring discharging done solid-like again through adding the step of water, is modulated into thick liquid shape finished product.

Constructing operation step of the present invention is:

After exterior wall is crossed 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 shifts to an earlier date 1 day in time more than 25 ℃ and sprinkles water on the wall.Carry out the strickling (silt content is no more than 5%) that feels secure of whitewashing of exterior wall then with product of the present invention.Exterior wall was fixed on concrete face and brick wall face intersection with the woven wire of 0.15cm earlier before whitewashing, whitewash with the 1:2.5 sand-cement slurry, wipeed off with the long floating rule of 2.5m, used headblock smooth again.

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

Table 1

Embodiment 1 ~ 4 its raw material source is seen shown in the table 2.

Table 2

According to standard GB/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 made up of the raw material of following weight part: 50 ~ 150 parts of white cements, 250 ~ 400 parts of lime putties; 110 ~ 150 parts of silica sands, 4.2 ~ 6.9 parts in alum, 150 ~ 250 parts of white stone powders; 0.5 ~ 1.5 part of rubber myron, 20 ~ 40 parts in water.

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

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

(2) white cement, lime putty are mixed, drop in the stirrer, again the white stone powder that crushes, alum, silica sand are dropped into successively, add the rubber myron then and stir;

(3) mixing after the stirring discharging done solid-like again through adding the step of water, and modulation obtains pure natural external wall putty finished product.

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