CN110669457A - Long-acting building waterproof adhesive - Google Patents
Long-acting building waterproof adhesive Download PDFInfo
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- CN110669457A CN110669457A CN201910997621.4A CN201910997621A CN110669457A CN 110669457 A CN110669457 A CN 110669457A CN 201910997621 A CN201910997621 A CN 201910997621A CN 110669457 A CN110669457 A CN 110669457A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J125/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Adhesives based on derivatives of such polymers
- C09J125/02—Homopolymers or copolymers of hydrocarbons
- C09J125/04—Homopolymers or copolymers of styrene
- C09J125/08—Copolymers of styrene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a long-acting building waterproof adhesive, and belongs to the technical field of high polymer materials. Weighing the following components in parts by weight: 30-50 parts of modified polystyrene dispersion liquid, 20-30 parts of organic solvent, 2-12 parts of isopropanol, 5-15 parts of dibutyl phthalate, 8-10 parts of filler and 1-2 parts of dispersing agent, mixing the modified polystyrene dispersion liquid and the organic solvent in a stirrer, adding the isopropanol, the dibutyl phthalate, the filler and the dispersing agent into the stirrer, and stirring and mixing for 30-60 min under the conditions that the temperature is 30-40 ℃ and the rotating speed is 500-800 r/min to obtain the long-acting building waterproof adhesive. The long-acting building waterproof adhesive obtained by the invention has excellent aging resistance and waterproof performance.
Description
Technical Field
The invention discloses a long-acting building waterproof adhesive, and belongs to the technical field of high polymer materials.
Background
The building glue is a glue type, is widely used in building engineering, and is an essential material in building engineering. It can also be used for road signs, dam leakage prevention, and military engineering emergency maintenance. Construction glue is used in every process of the construction industry, even every material. The building sealing glue is mainly used for sealing various seams or holes of a building, so that gas, liquid and solid are prevented from permeating, structural materials are prevented from being damaged when the structure is displaced, and the functions of heat preservation, sound insulation, water resistance, dust resistance, gas resistance, fire resistance, corrosion resistance, shock absorption and prevention of foreign matter accumulation in the seams are achieved. The building adhesive is convenient to use, the curing conditions are not strict, the building adhesive can be used under the conditions of production and construction sites, the building adhesive can be cured quickly at room temperature (5-35 ℃) and under the condition of proper pressurization, and the curing speed and the bonding performance are easy to adjust.
The building sealing waterproof adhesive is a product with a large using amount in the building industry, and mainly comprises organic silicon, polyurethane, polyacrylate, styrene-acrylic emulsion and the like at present, wherein the styrene-acrylic emulsion becomes a main raw material of the building sealing waterproof adhesive due to the advantages of low price, excellent aging resistance, no environmental pollution, good construction performance and the like; polystyrene foam (EPS) is widely used as a cushioning packaging and heat insulation material, millions of tons are consumed globally every year, meanwhile, millions of tons of white pollutants are generated, and the high added value utilization of the white pollutants is a major subject. Wansen and Liu Yun Shi are prepared by using waste polystyrene foam plastics as raw materials and adding organic solvents such as toluene, ethyl acetate and acetone to prepare a solvent type EPS adhesive and a styrene-acrylic emulsion respectively. In 1997, a patent for preparing styrene-acrylic emulsion by using white pollutant polystyrene foam plastics instead of styrene monomer under the condition of not adding organic solvent is firstly reported, and a patent certificate is obtained, and then a series of research papers for preparing styrene-acrylic emulsion by using white pollutant polystyrene foam plastics to carry out emulsion graft polymerization are published; recently, researches on preparation of styrene-acrylic emulsion by using waste EPS and tackifying and toughening effects of styrene-acrylic emulsion on building cement mortar have been carried out by using Huangjia and Yinhaibo, and the like, and the researches show that although the compressive strength is reduced, the bonding strength and toughness of the mortar are improved. Researchers also research a building waterproof adhesive which consists of 40-60 percent of composition A and 40-60 percent of composition B according to the mass percentage, wherein the sum of the composition A and the composition B is 100 percent; the composition A comprises the following components in percentage by mass: 5-15% of solid polysulfide rubber, 20-30% of marble powder, 10-20% of high-alumina cement powder, 20-30% of aluminum stearate and 20-30% of vinyl acetate, wherein the sum of the components is 100%; the composition B comprises the following components in percentage by mass: 30-40% of styrene-acrylic emulsion, 20-30% of preservative, 15-25% of water and 15-25% of sodium hydroxide aqueous solution, wherein the sum of the components is 100%. The invention also discloses a preparation method of the building waterproof adhesive, and the building waterproof adhesive has the advantages of good bonding performance, long service life, good stability, simple and easy preparation process, and can well meet the construction requirements. However, the traditional building waterproof adhesive still has the problems of poor aging resistance and incapability of further improving the waterproof performance, so research on the traditional building waterproof adhesive is needed.
Disclosure of Invention
The invention mainly solves the technical problems that: aiming at the problems that the traditional building waterproof adhesive has poor aging resistance and cannot further improve the waterproof performance, the long-acting building waterproof adhesive is provided.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the long-acting building waterproof adhesive is prepared from the following raw materials in parts by weight: 30-50 parts of modified polystyrene dispersion liquid, 20-30 parts of organic solvent, 2-12 parts of isopropanol, 5-15 parts of dibutyl phthalate, 8-10 parts of filler and 1-2 parts of dispersing agent;
the preparation method of the modified polystyrene dispersion liquid comprises the following steps:
mixing styrene and toluene according to a mass ratio of 1: 10-1: 20, adding an initiator with the mass of 0.1-0.2 times that of the styrene and 3-isopropenyl-alpha, alpha-dimethylbenzyl-isocyanate with the mass of 0.5-0.6 times that of the styrene, stirring and reacting to obtain a pretreated polystyrene mixture, mixing the pretreated polystyrene mixture and methanol according to a mass ratio of 1: 2-1: 4, mixing, settling, filtering, washing and drying to obtain pre-modified polystyrene, wherein the mass ratio of the pre-modified polystyrene to tetrahydrofuran is 1: 8-1: 12, adding a mixture of 3-aminopropyltriethoxysilane accounting for 0.2-0.4 time of the mass of the pre-modified polystyrene and silicon dioxide accounting for 0.3-0.5 time of the mass of the pre-modified polystyrene, stirring for reaction, and drying to obtain modified polystyrene, wherein the modified polystyrene and xylene are mixed according to a mass ratio of 1: 5-1: 8, mixing, adding a mixture of isocyanate and epoxy resin, wherein the weight of the mixture is 0.1-0.2 time that of the modified polystyrene, and the mixture is 0.2-0.4 time that of the modified polystyrene.
The organic solvent is any one of dimethylbenzene, methylbenzene or cyclohexanone.
The filler is any one of mica powder with the mesh number of 200 meshes or graphite powder with the mesh number of 200 meshes.
The dispersant is any one of dispersant NNO, dispersant MF or dispersant 5040.
The initiator is any one of benzoyl peroxide, lauroyl peroxide or diisophenylpropyl peroxide.
The silicon dioxide mixture is prepared by mixing potassium carbonate and titanium dioxide according to a mass ratio of 1.2: 4.0, grinding, calcining, washing and drying to obtain modified powder, wherein the modified powder and water are mixed according to the mass ratio of 1: 10-1: 15, mixing, performing ultrasonic dispersion to obtain modified powder dispersion liquid, mixing the modified powder dispersion liquid with tetraethoxysilane according to the mass ratio of 10: 1-12: 1, adding absolute ethyl alcohol with the mass of 0.1-0.2 time of that of the modified powder dispersion liquid and ammonia water with the mass of 0.1-0.3 time of that of the modified powder dispersion liquid, stirring for reaction, filtering, and drying to obtain a silicon dioxide mixture.
The isocyanate is any one of toluene-2, 4 diisocyanate or diphenylmethane diisocyanate.
The epoxy resin mixture is prepared by mixing epoxy resin E-44 and xylene according to a mass ratio of 1: 5-1: 7, mixing to obtain an epoxy resin mixture.
Polyethylene wax with the mass of 0.1-0.2 times of that of the modified polystyrene dispersion can be added into the modified polystyrene dispersion.
Polyallylamine with the mass of 0.1-0.2 time of that of the organic solvent can be added into the organic solvent.
The invention has the beneficial effects that:
(1) the invention uses modified polystyrene dispersion liquid when preparing long-acting building waterproof glue, firstly, isocyanate is used in the modified polystyrene dispersion liquid to modify polystyrene, so that the length of polystyrene molecular chain is increased, thereby the crosslinking density of the product is improved after the polystyrene is cured, further the density of the product is improved, the waterproof performance is enhanced, furthermore, after the polystyrene is modified, the polystyrene grafted isocyanate can react with siloxane in the subsequent treatment process to be combined, thereby the polystyrene can be grafted on the surface of the nano silicon dioxide mixture, further the density of the product after being cured is further improved, the waterproof performance of the product is further improved, secondly, because the added nano silicon dioxide is fixed among lamellar structures of potassium tetratitanate, after the grafting reaction, the potassium tetratitanate can be used as a lamellar filling material and uniformly distributed in the product, the preparation method has the advantages that the oxidation resistance of the product is enhanced while the water resistance of the product is improved, epoxy resin and isocyanate are added in the preparation process of the modified polystyrene dispersion liquid, hydroxyl groups still remain on the surface of the silicon dioxide after grafting treatment, the epoxy resin can be grafted on the surface of the silicon dioxide under the action of cyano-group isocyanate, so that the surface of the silicon dioxide is provided with epoxy groups, and in addition, after the silicon dioxide meets water, redundant isocyanate can react with moisture to generate amine substances, so that the epoxy resin grafted on the surface of the silicon dioxide is crosslinked, the crosslinking density in the product is further improved, and the aging resistance and the water resistance of the product are further improved;
(2) the polyallylamine and the polyethylene wax are added when the long-acting building waterproof adhesive is prepared, the addition of the polyethylene wax can promote the uniform distribution of the modified polystyrene added in the product, and the product has better stability in the storage process, and the added polyallylamine can absorb carbon dioxide in the use and storage processes of the product, so that a micro-crosslinked network is formed in the system, the storage time of the product is further prolonged, the bonding force in the product is improved after the product is used, and the aging resistance of the product is improved.
Detailed Description
Mixing potassium carbonate and titanium dioxide according to a mass ratio of 1.2: 4.0, mixing the mixture in a grinding machine, grinding the mixture for 20 to 30 hours to obtain mixed powder, calcining the mixed powder at the constant temperature of 750 to 850 ℃ for 18 to 25 hours to obtain modified powder blank, washing the modified powder blank with hydrochloric acid with the mass fraction of 12 to 15 percent for 8 to 10 times, drying the blank at the temperature of 80 to 95 ℃ for 1 to 2 hours to obtain modified powder, and mixing the modified powder and water according to the mass ratio of 1: 10-1: 15, mixing, and performing ultrasonic dispersion for 30-50 min under the condition that the frequency is 45-55 kHz to obtain a modified powder dispersion liquid, wherein the modified powder dispersion liquid and tetraethoxysilane are mixed according to the mass ratio of 10: 1-12: 1, mixing the mixture in a flask, adding absolute ethyl alcohol which is 0.1-0.2 times of the mass of the modified powder dispersion liquid and ammonia water which is 0.1-0.3 times of the mass of the modified powder dispersion liquid and has the mass fraction of 15-22% into the flask, stirring and reacting for 4-5 hours at the temperature of 45-55 ℃ and the rotating speed of 300-320 r/min, filtering to obtain a silicon dioxide mixture blank, and drying the silicon dioxide mixture blank at the temperature of 80-90 ℃ to obtain a silicon dioxide mixture; mixing styrene and toluene according to a mass ratio of 1: 10-1: 20, mixing the mixture in a three-neck flask, adding an initiator with the mass of 0.1-0.2 time of that of styrene and 3-isopropenyl-alpha, alpha-dimethylbenzyl-isocyanate with the mass of 0.5-0.6 time of that of the styrene into the three-neck flask, introducing nitrogen into the three-neck flask at the speed of 20-40 mL/min, stirring and reacting for 20-25 h under the conditions that the temperature is 80-85 ℃ and the rotating speed is 300-350 r/min to obtain a pretreated polystyrene mixture, and mixing the pretreated polystyrene mixture and methanol according to the mass ratio of 1: 2-1: 4, mixing and settling for 1-2 hours, filtering to obtain a filter cake, washing the filter cake with n-heptane for 5-8 times, drying in vacuum at the temperature of 60 ℃ for 2-6 hours to obtain pre-modified polystyrene, mixing the pre-modified polystyrene with tetrahydrofuran according to the mass ratio of 1: 8-1: 12, mixing the mixture in a four-neck flask, adding a mixture of 3-aminopropyltriethoxysilane 0.2-0.4 times the mass of the pre-modified polystyrene and silica 0.3-0.5 times the mass of the pre-modified polystyrene into the four-neck flask, introducing nitrogen into the four-neck flask at a rate of 20-30 mL/min, stirring and reacting for 1-3 hours at a temperature of 30-40 ℃ and a rotation speed of 200-350 r/min to obtain a modified polystyrene mixture, drying the modified polystyrene mixture for 5-6 hours at a temperature of 30 ℃, drying for 20-25 hours at a temperature of 60 ℃ in vacuum to obtain modified polystyrene, and mixing the modified polystyrene and xylene according to a mass ratio of 1: 5-1: 8, mixing the mixture in a flask, adding isocyanate with the mass of 0.1-0.2 time of that of the modified polystyrene and an epoxy resin mixture with the mass of 0.2-0.4 time of that of the modified polystyrene into the flask, and stirring and reacting for 8-24 hours at the temperature of 100-120 ℃ to obtain a modified polystyrene dispersion liquid; weighing the following components in parts by weight: 30-50 parts of modified polystyrene dispersion liquid, 20-30 parts of organic solvent, 2-12 parts of isopropanol, 5-15 parts of dibutyl phthalate, 8-10 parts of filler and 1-2 parts of dispersing agent, mixing the modified polystyrene dispersion liquid and the organic solvent in a stirrer, adding the isopropanol, the dibutyl phthalate, the filler and the dispersing agent into the stirrer, and stirring and mixing for 30-60 min under the conditions that the temperature is 30-40 ℃ and the rotating speed is 500-800 r/min to obtain the long-acting building waterproof adhesive. The organic solvent is any one of dimethylbenzene, methylbenzene or cyclohexanone. The filler is any one of mica powder with the mesh number of 200 meshes or graphite powder with the mesh number of 200 meshes. The dispersant is any one of dispersant NNO, dispersant MF or dispersant 5040. The initiator is any one of benzoyl peroxide, lauroyl peroxide or diisophenylpropyl peroxide. The isocyanate is any one of toluene-2, 4 diisocyanate or diphenylmethane diisocyanate. The epoxy resin mixture is prepared by mixing epoxy resin E-44 and xylene according to a mass ratio of 1: 5-1: 7, mixing to obtain an epoxy resin mixture. Polyethylene wax with the mass of 0.1-0.2 times of that of the modified polystyrene dispersion can be added into the modified polystyrene dispersion. Polyallylamine with the mass of 0.1-0.2 time of that of the organic solvent can be added into the organic solvent.
Mixing potassium carbonate and titanium dioxide according to a mass ratio of 1.2: 4.0 mixing in a grinder, mixing and grinding for 30h to obtain mixed powder, calcining the mixed powder at a constant temperature of 850 ℃ for 25h to obtain modified powder blank, washing the modified powder blank with 15 mass percent hydrochloric acid for 10 times, drying at a temperature of 95 ℃ for 2h to obtain modified powder, mixing the modified powder with water according to a mass ratio of 1: 15, carrying out ultrasonic dispersion for 50min under the condition that the frequency is 55kHz to obtain modified powder dispersion liquid, and mixing the modified powder dispersion liquid with tetraethoxysilane according to the mass ratio of 12: 1, mixing the mixture in a flask, adding absolute ethyl alcohol which is 0.2 time of the mass of the modified powder dispersion liquid and ammonia water which is 0.3 time of the mass of the modified powder dispersion liquid and has the mass fraction of 22% into the flask, stirring and reacting for 5 hours at the temperature of 55 ℃ and the rotating speed of 320r/min, filtering to obtain a silicon dioxide mixture blank, and drying the silicon dioxide mixture blank at the temperature of 90 ℃ to obtain a silicon dioxide mixture; mixing styrene and toluene according to a mass ratio of 1: 20, adding an initiator with the mass of 0.2 time of that of the styrene and 3-isopropenyl-alpha, alpha-dimethylbenzyl-isocyanate with the mass of 0.6 time of that of the styrene into the three-neck flask, introducing nitrogen into the three-neck flask at the speed of 40mL/min, stirring and reacting for 25 hours at the temperature of 85 ℃ and the rotating speed of 350r/min to obtain a pretreated polystyrene mixture, and mixing the pretreated polystyrene mixture and methanol according to the mass ratio of 1: 4, mixing and settling for 2 hours, filtering to obtain a filter cake, washing the filter cake with n-heptane for 8 times, and drying in vacuum at the temperature of 60 ℃ for 6 hours to obtain pre-modified polystyrene, wherein the mass ratio of the pre-modified polystyrene to tetrahydrofuran is 1: 12, mixing the mixture in a four-neck flask, adding a mixture of 3-aminopropyltriethoxysilane 0.4 times the mass of the pre-modified polystyrene and silicon dioxide 0.5 times the mass of the pre-modified polystyrene into the four-neck flask, introducing nitrogen into the four-neck flask at a rate of 30mL/min, stirring and reacting for 3 hours at a temperature of 40 ℃ and a rotation speed of 350r/min to obtain a modified polystyrene mixture, drying the modified polystyrene mixture at a temperature of 30 ℃ for 6 hours, vacuum-drying at a temperature of 60 ℃ for 25 hours to obtain modified polystyrene, mixing the modified polystyrene and xylene according to a mass ratio of 1: 8, mixing the mixture in a flask, adding a mixture of isocyanate with the mass of 0.2 time of that of the modified polystyrene and epoxy resin with the mass of 0.4 time of that of the modified polystyrene into the flask, and stirring and reacting for 24 hours at the temperature of 120 ℃ to obtain modified polystyrene dispersion liquid; weighing the following components in parts by weight: 50 parts of modified polystyrene dispersion liquid, 30 parts of organic solvent, 12 parts of isopropanol, 15 parts of dibutyl phthalate, 10 parts of filler and 2 parts of dispersant, mixing the modified polystyrene dispersion liquid and the organic solvent in a stirrer, adding the isopropanol, the dibutyl phthalate, the filler and the dispersant into the stirrer, and stirring and mixing for 60min under the conditions that the temperature is 40 ℃ and the rotating speed is 800r/min to obtain the long-acting building waterproof adhesive. The organic solvent is xylene. The filler is mica powder with 200 meshes. The dispersant is dispersant NNO. The initiator is benzoyl peroxide. The isocyanate is toluene-2, 4 diisocyanate. The epoxy resin mixture is prepared by mixing epoxy resin E-44 and xylene according to a mass ratio of 1: 7, mixing to obtain an epoxy resin mixture. Polyethylene wax with the mass of 0.2 time of that of the modified polystyrene dispersion can be added into the modified polystyrene dispersion. Polyallylamine with the mass 0.2 time of that of the organic solvent can be added into the organic solvent.
Mixing potassium carbonate and titanium dioxide according to a mass ratio of 1.2: 4.0 mixing in a grinder, mixing and grinding for 30h to obtain mixed powder, calcining the mixed powder at a constant temperature of 850 ℃ for 25h to obtain modified powder blank, washing the modified powder blank with 15 mass percent hydrochloric acid for 10 times, drying at a temperature of 95 ℃ for 2h to obtain modified powder, mixing the modified powder with water according to a mass ratio of 1: 15, carrying out ultrasonic dispersion for 50min under the condition that the frequency is 55kHz to obtain modified powder dispersion liquid, and mixing the modified powder dispersion liquid with tetraethoxysilane according to the mass ratio of 12: 1, mixing the mixture in a flask, adding absolute ethyl alcohol which is 0.2 time of the mass of the modified powder dispersion liquid and ammonia water which is 0.3 time of the mass of the modified powder dispersion liquid and has the mass fraction of 22% into the flask, stirring and reacting for 5 hours at the temperature of 55 ℃ and the rotating speed of 320r/min, filtering to obtain a silicon dioxide mixture blank, and drying the silicon dioxide mixture blank at the temperature of 90 ℃ to obtain a silicon dioxide mixture; mixing styrene and toluene according to a mass ratio of 1: 20, mixing the mixture in a three-neck flask, adding an initiator with the mass of 0.2 time that of the styrene into the three-neck flask, introducing nitrogen into the three-neck flask at the speed of 40mL/min, stirring and reacting for 25 hours under the conditions that the temperature is 85 ℃ and the rotating speed is 350r/min to obtain a pretreated polystyrene mixture, and mixing the pretreated polystyrene mixture and methanol according to the mass ratio of 1: 4, mixing and settling for 2 hours, filtering to obtain a filter cake, washing the filter cake with n-heptane for 8 times, and drying in vacuum at the temperature of 60 ℃ for 6 hours to obtain pre-modified polystyrene, wherein the mass ratio of the pre-modified polystyrene to tetrahydrofuran is 1: 12, mixing the mixture in a four-neck flask, adding 3-aminopropyltriethoxysilane which is 0.4 times of the mass of the pre-modified polystyrene and silicon dioxide which is 0.5 times of the mass of the pre-modified polystyrene into the four-neck flask, introducing nitrogen into the four-neck flask at the speed of 30mL/min, stirring and reacting for 3 hours at the temperature of 40 ℃ and the rotation speed of 350r/min to obtain a modified polystyrene mixture, drying the modified polystyrene mixture for 6 hours at the temperature of 30 ℃, vacuum-drying the modified polystyrene mixture for 25 hours at the temperature of 60 ℃ to obtain modified polystyrene, and mixing the modified polystyrene and xylene according to the mass ratio of 1: 8, mixing the mixture in a flask, adding a mixture of isocyanate with the mass of 0.2 time of that of the modified polystyrene and epoxy resin with the mass of 0.4 time of that of the modified polystyrene into the flask, and stirring and reacting for 24 hours at the temperature of 120 ℃ to obtain modified polystyrene dispersion liquid; weighing the following components in parts by weight: 50 parts of modified polystyrene dispersion liquid, 30 parts of organic solvent, 12 parts of isopropanol, 15 parts of dibutyl phthalate, 10 parts of filler and 2 parts of dispersant, mixing the modified polystyrene dispersion liquid and the organic solvent in a stirrer, adding the isopropanol, the dibutyl phthalate, the filler and the dispersant into the stirrer, and stirring and mixing for 60min under the conditions that the temperature is 40 ℃ and the rotating speed is 800r/min to obtain the long-acting building waterproof adhesive. The organic solvent is xylene. The filler is mica powder with 200 meshes. The dispersant is dispersant NNO. The initiator is benzoyl peroxide. The isocyanate is toluene-2, 4 diisocyanate. The epoxy resin mixture is prepared by mixing epoxy resin E-44 and xylene according to a mass ratio of 1: 7, mixing to obtain an epoxy resin mixture. Polyethylene wax with the mass of 0.2 time of that of the modified polystyrene dispersion can be added into the modified polystyrene dispersion. Polyallylamine with the mass 0.2 time of that of the organic solvent can be added into the organic solvent.
Mixing styrene and toluene according to a mass ratio of 1: 20, adding an initiator with the mass of 0.2 time of that of the styrene and 3-isopropenyl-alpha, alpha-dimethylbenzyl-isocyanate with the mass of 0.6 time of that of the styrene into the three-neck flask, introducing nitrogen into the three-neck flask at the speed of 40mL/min, stirring and reacting for 25 hours at the temperature of 85 ℃ and the rotating speed of 350r/min to obtain a pretreated polystyrene mixture, and mixing the pretreated polystyrene mixture and methanol according to the mass ratio of 1: 4, mixing and settling for 2 hours, filtering to obtain a filter cake, washing the filter cake with n-heptane for 8 times, and drying in vacuum at the temperature of 60 ℃ for 6 hours to obtain pre-modified polystyrene, wherein the mass ratio of the pre-modified polystyrene to tetrahydrofuran is 1: 12, mixing the mixture in a four-neck flask, adding 3-aminopropyltriethoxysilane which is 0.4 times of the mass of the pre-modified polystyrene and silicon dioxide which is 0.5 times of the mass of the pre-modified polystyrene into the four-neck flask, introducing nitrogen into the four-neck flask at the speed of 30mL/min, stirring and reacting for 3 hours at the temperature of 40 ℃ and the rotation speed of 350r/min to obtain a modified polystyrene mixture, drying the modified polystyrene mixture for 6 hours at the temperature of 30 ℃, vacuum-drying the modified polystyrene mixture for 25 hours at the temperature of 60 ℃ to obtain modified polystyrene, and mixing the modified polystyrene and xylene according to the mass ratio of 1: 8, mixing the mixture in a flask, adding a mixture of isocyanate with the mass of 0.2 time of that of the modified polystyrene and epoxy resin with the mass of 0.4 time of that of the modified polystyrene into the flask, and stirring and reacting for 24 hours at the temperature of 120 ℃ to obtain modified polystyrene dispersion liquid; weighing the following components in parts by weight: 50 parts of modified polystyrene dispersion liquid, 30 parts of organic solvent, 12 parts of isopropanol, 15 parts of dibutyl phthalate, 10 parts of filler and 2 parts of dispersant, mixing the modified polystyrene dispersion liquid and the organic solvent in a stirrer, adding the isopropanol, the dibutyl phthalate, the filler and the dispersant into the stirrer, and stirring and mixing for 60min under the conditions that the temperature is 40 ℃ and the rotating speed is 800r/min to obtain the long-acting building waterproof adhesive. The organic solvent is xylene. The filler is mica powder with 200 meshes. The dispersant is dispersant NNO. The initiator is benzoyl peroxide. The isocyanate is toluene-2, 4 diisocyanate. The epoxy resin mixture is prepared by mixing epoxy resin E-44 and xylene according to a mass ratio of 1: 7, mixing to obtain an epoxy resin mixture. Polyethylene wax with the mass of 0.2 time of that of the modified polystyrene dispersion can be added into the modified polystyrene dispersion. Polyallylamine with the mass 0.2 time of that of the organic solvent can be added into the organic solvent.
Mixing potassium carbonate and titanium dioxide according to a mass ratio of 1.2: 4.0 mixing in a grinder, mixing and grinding for 30h to obtain mixed powder, calcining the mixed powder at a constant temperature of 850 ℃ for 25h to obtain modified powder blank, washing the modified powder blank with 15 mass percent hydrochloric acid for 10 times, drying at a temperature of 95 ℃ for 2h to obtain modified powder, mixing the modified powder with water according to a mass ratio of 1: 15, carrying out ultrasonic dispersion for 50min under the condition that the frequency is 55kHz to obtain modified powder dispersion liquid, and mixing the modified powder dispersion liquid with tetraethoxysilane according to the mass ratio of 12: 1, mixing the mixture in a flask, adding absolute ethyl alcohol which is 0.2 time of the mass of the modified powder dispersion liquid and ammonia water which is 0.3 time of the mass of the modified powder dispersion liquid and has the mass fraction of 22% into the flask, stirring and reacting for 5 hours at the temperature of 55 ℃ and the rotating speed of 320r/min, filtering to obtain a silicon dioxide mixture blank, and drying the silicon dioxide mixture blank at the temperature of 90 ℃ to obtain a silicon dioxide mixture; mixing styrene and toluene according to a mass ratio of 1: 20, adding an initiator with the mass of 0.2 time of that of the styrene and 3-isopropenyl-alpha, alpha-dimethylbenzyl-isocyanate with the mass of 0.6 time of that of the styrene into the three-neck flask, introducing nitrogen into the three-neck flask at the speed of 40mL/min, stirring and reacting for 25 hours at the temperature of 85 ℃ and the rotating speed of 350r/min to obtain a pretreated polystyrene mixture, and mixing the pretreated polystyrene mixture and methanol according to the mass ratio of 1: 4, mixing and settling for 2 hours, filtering to obtain a filter cake, washing the filter cake with n-heptane for 8 times, and drying in vacuum at the temperature of 60 ℃ for 6 hours to obtain pre-modified polystyrene, wherein the mass ratio of the pre-modified polystyrene to tetrahydrofuran is 1: 12, mixing the mixture in a four-neck flask, adding a mixture of 3-aminopropyltriethoxysilane 0.4 times the mass of the pre-modified polystyrene and silicon dioxide 0.5 times the mass of the pre-modified polystyrene into the four-neck flask, introducing nitrogen into the four-neck flask at a rate of 30mL/min, stirring and reacting for 3 hours at a temperature of 40 ℃ and a rotation speed of 350r/min to obtain a modified polystyrene mixture, drying the modified polystyrene mixture at a temperature of 30 ℃ for 6 hours, vacuum-drying at a temperature of 60 ℃ for 25 hours to obtain modified polystyrene, mixing the modified polystyrene and xylene according to a mass ratio of 1: 8, mixing the mixture in a flask, and stirring the mixture for reaction for 24 hours at the temperature of 120 ℃ to obtain modified polystyrene dispersion liquid; weighing the following components in parts by weight: 50 parts of modified polystyrene dispersion liquid, 30 parts of organic solvent, 12 parts of isopropanol, 15 parts of dibutyl phthalate, 10 parts of filler and 2 parts of dispersant, mixing the modified polystyrene dispersion liquid and the organic solvent in a stirrer, adding the isopropanol, the dibutyl phthalate, the filler and the dispersant into the stirrer, and stirring and mixing for 60min under the conditions that the temperature is 40 ℃ and the rotating speed is 800r/min to obtain the long-acting building waterproof adhesive. The organic solvent is xylene. The filler is mica powder with 200 meshes. The dispersant is dispersant NNO. The initiator is benzoyl peroxide. Polyethylene wax with the mass of 0.2 time of that of the modified polystyrene dispersion can be added into the modified polystyrene dispersion. Polyallylamine with the mass 0.2 time of that of the organic solvent can be added into the organic solvent.
The long-acting building waterproof glue obtained in the examples 1 to 4 is subjected to performance detection, and the specific detection method is as follows:
and (3) detecting the tensile strength, the elongation at break and the water impermeability of the long-acting type building waterproof glue film according to JC/T894. The natural aging environment (6 years of exposure to the atmosphere) was simulated and the tensile strength and elongation at break were again tested. Specific detection results are shown in table 1:
table 1: performance test meter
| Detecting content | Example 1 | Example 2 | Example 3 | Example 4 |
| Water absorption after 120h soaking% | Is impervious to water | 1.9 | 2.5 | 2.3 |
| Tensile strength/MPa | 1.68 | 1.52 | 1.43 | 1.46 |
| Elongation at break/% | 275 | 236 | 242 | 230 |
| Tensile strength/MPa after 6 years of simulated aging | 1.35 | 1.13 | 1.06 | 1.09 |
| Simulated elongation at break after 6 years of aging% | 241 | 189 | 193 | 186 |
The detection results in table 1 show that the long-acting building waterproof adhesive obtained by the invention has excellent aging resistance and waterproof performance.
Claims (10)
1. The long-acting building waterproof adhesive is characterized by comprising the following raw materials in parts by weight: 30-50 parts of modified polystyrene dispersion liquid, 20-30 parts of organic solvent, 2-12 parts of isopropanol, 5-15 parts of dibutyl phthalate, 8-10 parts of filler and 1-2 parts of dispersing agent;
the preparation method of the modified polystyrene dispersion liquid comprises the following steps:
mixing styrene and toluene according to a mass ratio of 1: 10-1: 20, adding an initiator with the mass of 0.1-0.2 times that of the styrene and 3-isopropenyl-alpha, alpha-dimethylbenzyl-isocyanate with the mass of 0.5-0.6 times that of the styrene, stirring and reacting to obtain a pretreated polystyrene mixture, mixing the pretreated polystyrene mixture and methanol according to a mass ratio of 1: 2-1: 4, mixing, settling, filtering, washing and drying to obtain pre-modified polystyrene, wherein the mass ratio of the pre-modified polystyrene to tetrahydrofuran is 1: 8-1: 12, adding a mixture of 3-aminopropyltriethoxysilane accounting for 0.2-0.4 time of the mass of the pre-modified polystyrene and silicon dioxide accounting for 0.3-0.5 time of the mass of the pre-modified polystyrene, stirring for reaction, and drying to obtain modified polystyrene, wherein the modified polystyrene and xylene are mixed according to a mass ratio of 1: 5-1: 8, mixing, adding a mixture of isocyanate and epoxy resin, wherein the weight of the mixture is 0.1-0.2 time that of the modified polystyrene, and the mixture is 0.2-0.4 time that of the modified polystyrene.
2. The long-acting building waterproof glue of claim 1, wherein: the organic solvent is any one of dimethylbenzene, methylbenzene or cyclohexanone.
3. The long-acting building waterproof glue of claim 1, wherein: the filler is any one of mica powder with the mesh number of 200 meshes or graphite powder with the mesh number of 200 meshes.
4. The long-acting building waterproof glue of claim 1, wherein: the dispersant is any one of dispersant NNO, dispersant MF or dispersant 5040.
5. The long-acting building waterproof glue of claim 1, wherein: the initiator is any one of benzoyl peroxide, lauroyl peroxide or diisophenylpropyl peroxide.
6. The long-acting building waterproof glue of claim 1, wherein: the silicon dioxide mixture is prepared by mixing potassium carbonate and titanium dioxide according to a mass ratio of 1.2: 4.0, grinding, calcining, washing and drying to obtain modified powder, wherein the modified powder and water are mixed according to the mass ratio of 1: 10-1: 15, mixing, performing ultrasonic dispersion to obtain modified powder dispersion liquid, mixing the modified powder dispersion liquid with tetraethoxysilane according to the mass ratio of 10: 1-12: 1, adding absolute ethyl alcohol with the mass of 0.1-0.2 time of that of the modified powder dispersion liquid and ammonia water with the mass of 0.1-0.3 time of that of the modified powder dispersion liquid, stirring for reaction, filtering, and drying to obtain a silicon dioxide mixture.
7. The long-acting building waterproof glue of claim 1, wherein: the isocyanate is any one of toluene-2, 4 diisocyanate or diphenylmethane diisocyanate.
8. The long-acting building waterproof glue of claim 1, wherein: the epoxy resin mixture is prepared by mixing epoxy resin E-44 and xylene according to a mass ratio of 1: 5-1: 7, mixing to obtain an epoxy resin mixture.
9. The long-acting building waterproof glue of claim 1, wherein: polyethylene wax with the mass of 0.1-0.2 times of that of the modified polystyrene dispersion can be added into the modified polystyrene dispersion.
10. The long-acting building waterproof glue of claim 1, wherein: polyallylamine with the mass of 0.1-0.2 time of that of the organic solvent can be added into the organic solvent.
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