CN87101009A - Hydrophobic powder for building and production method thereof - Google Patents

Abstract

A kind of hydrophobe for building and production method thereof.This hydrophobe is to be core with calcium hydroxide, and extexine is surrounded and the ultimate particle of composition by the long carbochain hydrophobic end of fatty acid calcium.Production method of the present invention is: ammoniacal liquor is added the lipid acid of melting under constantly stirring, make soap lye.At low temperatures soap lye is joined then in the calcium hydroxide lime white of volume, stir, temperature reaction again generates and to refuse water slurry, through dewater water-proof paste, or dry hydrophobe.This hydrophobe superior performance can independently be used, and also can use with cement mixing.Be used for waterproof and dampproof engineerings such as roofing, platform, pond, ground and wall.

Description

The invention belongs to water-proof material and production technique that construction work is used.

Be applied to the waterproof paint (US4,102,703) of water-proof material as forming of construction work at present by the polyvalent alcohol of hydrophobic metal or nonmetal oxide particulate and solubility; By the basic metal alkyl and (or) monohydroxy-alcohol of silicic acid phenyl ester organic complex or inner complex and solubility and (or) water-resisting agent (US3 that forms of ketone, 955,985) and the various water-resisting agents sold of domestic production, waterproof paint, coiled material or by aluminum stearate, Zinic stearas, barium stearate, copper sulfate, ferrous sulfate, the water-proofing powder that calcium sulfate etc. are formed etc., though they also can solve waterproof and dampproof problem to a certain extent, these water-proof materials maybe to mix do in the cement concrete waterproof composition or with buildings substrate surface tight bond be that one constitutes waterproof layer.Generally lose waterproof action, be difficult to solve the problem of not leaking for a long time because of the influence that is subjected to aging and buildings basic crack, and the price comparison height, preparation is also complicated.

The objective of the invention is provides a kind of basic crack that is not subjected to influence for the construction and the maintenance of construction work, extremely difficult aging, not perishable in the life-time service process, distortion and decrement, low-cost multiduty long-term watertight hydrophobe.

Hydrophobe of the present invention is to be core by inside for the calcium hydroxide particulate, extexine by fatty acid calcium surround form, see Fig. 1.Hydrophobe of the present invention is to be skeleton with calcium hydroxide, and the long carbochain of fatty acid calcium is the hydrophobic end, makes itself to have water repellency.Here by hydrophobisation calcium hydroxide become hydrophober.That is to say, based on calcium hydroxide (entity), with lipid acid ammonia is the hydrophobisation treatment agent, through the reaction of control is arranged, make each tiny calcium hydroxide particle completely, surrounded ， And and formed entity that certain stability is arranged-the have pulvis of water repellency by the fatty acid calcium particle of littler resultant of reaction-have water repellency uniformly by cohesion effect.

Production method of the present invention is: will contain the calcium oxide greater than 70%, fineness is not less than 60 purpose unslaked limes, adds water digestion, makes the calcium hydroxide lime white, is cooled to below 40 ℃.In addition, the weak ammonia of adding 10～15% is made thin ammonium soaps liquid in the lipid acid of melting.Lipid acid is meant and contains the above synthetic fatty acid of 10 carbon atoms, or vegeto-animal all greases, comprises the low gear grease, the lipid acid that processes.Their weight ratio is lipid acid: ammoniacal liquor: unslaked lime=100: 60: 2000～5000.Then under constantly stirring, thin soap lye is joined temperature be lower than in 40 ℃ the calcium hydroxide lime white, material is warmed to 60～80 ℃ after fully mixing, make the following reaction of calcium hydroxide and lipid acid ammonium generation:

What make refuses water slurry, or through centrifuge dewatering, water-proof paste, or dry after static the anhydrating, hydrophobe.The production method of hydrophobe of the present invention, according to practical situation, the also available caustic soda aqueous solution replaces ammoniacal liquor, makes thin soap lye.But the soap lye that uses the caustic soda aqueous solution to make is produced hydrophobe, must carry out clear water washing more than three times to the water slurry of making of refusing, the sodium hydroxide that stays with the flush away reaction.

Another production method of the present invention is, can be directly reacts with the solution and the calcium hydroxide lime white of commodity ammonium soaps or soap.

Hydrophobe of the present invention can be used for waterproof such as the roofing, platform, pond in new house or old room, also can be used for ground, roof and wall protection against the tide.This hydrophobe can use separately, also can use ， And and not retrained by execution conditions with cement mixing, even construction is also unaffected in the basic unit of humidity, does not more need in addition pre-treatment of substrate surface.

The waterproof essence of hydrophobe of the present invention is by intensive and independently do not have restraining function each other, has the powder of water repellency, covers on the roof-base and constitutes powder group waterproof layer with itself action of gravity, thereby play waterproof action.

The present invention has following evident characteristic:

1, odorless is nontoxic, does not burn.

2, compare with present all kinds of waterproof technology of roofing, superior performance, no matter independent the use is used for all no seepage and no leakages for a long time of new house or old room; Also very reliable to ground and moistureproof its effect of wall in addition.

3, in use extremely difficult aging, not perishable, distortion and decrement.Because product chemistry stable in properties of the present invention; not with air in the reaction of various compositions; can be because of the influence of physical conditions such as the temperature that is subjected to the Nature, humidity yet; during in addition because of construction 3 centimetres of concrete covers that the left and right sides is thick are arranged on hydrophobe, so hydrophobe is not destroyed by ultraviolet ray can and be lost.

4, not influenced by basic crack.Because of hydrophobe has diversity, when basic crack, the powder of hydrophobe can fall in the joint filling crack, thereby plays waterproof action.

5, raw material is that And ammoniacal liquor saponification makes low cost product with source abundant unslaked lime and low-grade inexpensive synthetic fatty acid or the lipid acid of processing with animal-plant oil.

6, the principal feature of production method is that chemical reaction and physically modified are realized in same process simultaneously, thereby has obtained NEW TYPE OF COMPOSITE water-proof material-hydrophobe of high quality and at a reasonable price; Another characteristics are that the consumption of calcium hydroxide is 150-400 a times of desired fats acid its corresponding theory consumption.Here calcium hydroxide plays two effects, and the one, as the reactant that generates fatty acid calcium, the 2nd, with the component part of skeleton (entity) structure formation as product.The latter can be considered substituted fatty acid calcium and plays the physically modified effect.Because the general equal toughness of pure fatty acid calcium (except that calcium stearate), easily caking often is saponaceous, and its fusing point is very low.And by this replacement and modifying function, both made and adopted low-grade inexpensive lipid acid (comprising synthetic fatty acid), and also can make hydrophobe of the present invention become powdery and have uninflammability and fusing point height good physicalies such as (being more than 1800 ℃) as raw material.

Description of drawings:

Fig. 1, hydrophobe organization chart.

Fig. 2, hydrophobe production scheme.

Embodiment:

Example 1, press synthetic fatty acid: ammoniacal liquor: the weight ratio batching of unslaked lime=100: 60: 2000.Get 10 kilograms of synthetic fatty acids (acid number≤190) that contain 15-25 carbon atom, be placed in the reactor, add water 100 liters, intensification is melted synthetic fatty acid fully, in temperature is slowly to add 6 kilograms of ammoniacal liquor in the reactor while stirring under the 70-80 ℃ of condition, abundant until saponification, promptly make rare ammonium soaps liquid, standby.

In the ashing groove, add 800 liter water, again with 200 kilograms contain that calcium oxide is 70% or more, fineness is not less than 60 purpose calcium lime powders and adds under constantly stirring and carry out the stirring at intermittence in the ashing groove then, just made calcium hydroxide (1) lime white.Below material temperature drop to 40 ℃, squeeze into reactor, rare ammonium soaps liquid that the temperature that will prepare under constantly stirring is lower than below 40 ℃ adds lentamente, mix up to Jia Wan And, heat up to vapour then, make the material temperature reach 60-70 ℃, continue again to stir to make it abundant reaction in 20-30 minute, promptly get and refuse water slurry.

The water slurry of refusing that makes is put into subsider, and quiet putting more than 90 minutes bleeds off top clear liquor, get the dense water resistant solution in its underpart, or use centrifuge dewatering, promptly get the water-proof paste of water content about 50%, maybe will refuse water slurry and dry, promptly get hydrophobe with centrifugal spray drying equipment.

The preparation of example 2, rare soap lye also can be adopted caustic lye of soda to carry out saponification reaction without ammoniacal liquor and generate rare soda soap liquid.Press lipid acid: sodium hydroxide: the weight ratio batching of unslaked lime=100: 15: 5000.Get 10 kilograms in lipid acid, be placed in the reactor, add water 100 liters, intensification is melted lipid acid fully, is while stirring the solution of 1.5 kilograms of sodium hydroxide to be added in the reactor lentamente under the 70-80 ℃ of condition in temperature, and is abundant until saponification, promptly make rare soda soap liquid, standby.

In the ashing groove, add 2000 liter water, again 500 kilograms are contained that calcium oxide is 70% or more, fineness is not less than 60 purpose calcium lime powders and adds in the ashing groove under constantly stirring, carry out the stirring at intermittence then, just made calcium hydroxide (1) lime white.Below material temperature drop to 40 ℃, squeeze into reactor, rare soda soap liquid that the temperature that will prepare under constantly stirring is lower than below 40 ℃ adds lentamente, mix up to Jia Wan And, heat up to vapour then, make the material temperature reach 60-70 ℃, continue again to stir to make it abundant reaction in 20-30 minute, promptly get and refuse water slurry.Fully wash refusing water slurry then, general washing times washes will react the sodium hydroxide that generates as far as possible more than three times.

Last or dehydration makes water-proof paste, or oven dry makes hydrophobe.

Example 3, used rare soap lye also can directly be buied from the market in example 1 or example 2 ammonium soaps or soda soap water dissolve into diluent and replace.

Example 4, roofing is carried out waterproof, if in basic unit 3～5 millimeters of spreading hydrophobes, isolate with paper again, cover about 3 centimetres with concrete at last and make protective layer and get final product.Or press hydrophobe: the weight ratio of cement=2: 1, its mix is even, on wall, smear again and press 2～2.5 millimeters, can be moistureproof.

Ton hydrophobe is in the waterproof pilot projects such as roofing, platform and pond in new house and old room surplus in the of ten from producing as a trial, and it is surplus to last year, so far no seepage and no leakage.

Claims (6)

1, a kind of hydrophobic powder for building and production method thereof is characterized in that: this hydrophobe is to be core with the calcium hydroxide particulate, and extexine is formed by the ultimate particle that fatty acid calcium surrounded; Described method is the lipid acid that ammoniacal liquor or caustic soda liquid is added melting under constantly stirring, make thin soap lye, then, this is thin, temperature is lower than 40 ℃ soap lye and joins in the calcium hydroxide lime white and fully stir and mix, be warmed up to 60-80 ℃ again, make it carry out chemical reaction and physically modified, generate and to refuse water slurry, dewater at last water-proof paste or dry hydrophobe.

2, method according to claim 1 is characterized in that: this formulation weight ratio is lipid acid: ammoniacal liquor: unslaked lime=100: 60: 2000～5000.

3, method according to claim 1 is characterized in that: this lipid acid is to contain the above synthetic fatty acid of 10 carbon atoms, or vegeto-animal all greases, comprises the low gear grease, the lipid acid that processes.

4, method according to claim 1 is characterized in that: the calcium hydroxide lime white be by calcium oxide content greater than 70%, fineness is not less than 60 purpose calcium lime powders and adds water digestion and form.

5, method according to claim 1 is characterized in that: thin soap lye is directly with soap solution or ammonium soaps liquid.

6, hydrophobe according to claim 1, it is characterized in that: this hydrophobe is used for the protection against the tide on the waterproof of construction work in roofing, platform, pond and ground, roof separately, or with the protection against the tide of cement mixing as wall.

Images