CN112521083A - Anti-aging polymer cement waterproof coating and preparation method thereof - Google Patents
Anti-aging polymer cement waterproof coating and preparation method thereof Download PDFInfo
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- CN112521083A CN112521083A CN202011256647.2A CN202011256647A CN112521083A CN 112521083 A CN112521083 A CN 112521083A CN 202011256647 A CN202011256647 A CN 202011256647A CN 112521083 A CN112521083 A CN 112521083A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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Abstract
The invention belongs to the field of waterproof coatings, and particularly relates to an anti-aging polymer cement waterproof coating and a preparation method thereof. The polymer cement waterproof coating comprises a liquid material and a powder material; the liquid material comprises ethylene-vinyl acetate emulsion, cyclohexane 1, 2-diisononyl phthalate, a defoaming agent, a dispersing agent, a bactericide and water, and the powder material comprises white cement, coarse whiting, titanium white, 2, 4-trimethyl-1, 2-dihydroquinoline polymer, bisphenol A disalicylate and a water reducing agent. The invention can form a stable and durable waterproof film. The finally formed waterproof film has stable and lasting performance, does not have the problem of performance reduction of the waterproof film caused by volatilization and migration of a plasticizer after film formation, has excellent aging resistance, simple manufacturing mode, low cost, environmental protection, no pollution, mass production and application, and has practicability.
Description
Technical Field
The invention belongs to the field of waterproof coatings, and particularly relates to an anti-aging polymer cement waterproof coating and a preparation method thereof.
Background
The polymer cement waterproof coating is a bi-component water-based waterproof coating which is prepared by taking polymer emulsion and cement as main raw materials and adding a filler and other auxiliary agents, and is solidified into a film through water volatilization and cement hydration reaction, and is called JS waterproof coating for short. The JS waterproof paint can be directly constructed on a wet or dry base layer, has good bonding property with mortar and concrete and has good anti-permeability performance, so the JS waterproof paint is widely applied to the waterproof engineering of buildings in recent years. The execution standard of the product is GB/T23445-2009 Polymer Cement waterproof coating. The Chinese invention patent application CN201610767968.6 adopts ethylene-vinyl acetate emulsion and matches with plasticizer, thickener, etc. to prepare liquid material, and uses white cement, sulpho-aluminum cement, triple superphosphate, quartz powder, etc. to prepare powder material, and the waterproof coating prepared by mixing the two materials has the characteristics of fast drying speed, excellent physical property, good environmental protection performance, etc.; the Chinese patent application CN201610765404.9 discloses that the waterproof paint prepared by using acrylic emulsion or ethylene-vinyl acetate emulsion and rosin emulsion as liquid materials and cement, coarse whiting, quartz powder, wollastonite and the like as powder materials can form a reliable waterproof film, can be automatically repaired after water absorption when tiny damage (<0.5mm cracks) is obtained, and still has good waterproof performance. At present, the polymer cement waterproof coating is commonly used for indoor waterproofing of buildings, including bathrooms, kitchens, balconies and the like, and the domestic market demand is huge every year and can reach about 60 million tons.
The liquid material in the polymer cement waterproof coating generally takes acrylic emulsion or ethylene-vinyl acetate emulsion as a base material, the powder material comprises fillers such as heavy calcium, quartz powder, wollastonite powder and the like besides cement, and the two fillers are uniformly mixed and then coated on the surface of a base layer to form a waterproof film, so that the waterproof effect is achieved. For the waterproof coating adopting the ethylene-vinyl acetate emulsion, due to the characteristics of the waterproof coating, a plasticizer needs to be added in the using process, the most effective plasticizer is an o-benzene product at present, but after the product is formed into a film, the plasticizer can migrate and migrate out of the interior of the film, so that the toughness of the film is reduced, and the waterproof effect is reduced. Meanwhile, both the acrylic emulsion and the ethylene-vinyl acetate emulsion have no good weather resistance and cannot bear long-time illumination, and ultraviolet rays in sunlight can break a high molecular chain, so that a coating film is aged and degraded, and the waterproof performance is reduced, so that most of the polymer cement waterproof coating is applied to indoor places and places which are not illuminated. However, in practical application, due to reasons such as construction period arrangement and the like, the waterproof layer is not covered and protected in time after being coated, but is in an exposed state, some projects even directly coat the waterproof coating on the outer wall of a building and are directly exposed by wind and sunlight, the states influenced by ultraviolet rays can sometimes last for several months, the waterproof performance of the coating is reduced in different degrees, and the waterproof safety of the building is influenced, so that the anti-aging performance of the polymer cement waterproof coating product is improved, and the anti-aging performance of the polymer cement waterproof coating product is very necessary, and the anti-aging performance of the polymer cement waterproof coating product is improved, and the anti-aging performance of the polymer cement waterproof.
The invention of Chinese patent application CN02117853.4 'Low polymer cement waterproof paint with low polymer cement ratio and high performance and its production process' discloses a polymer cement waterproof paint, the main emulsion of which adopts acrylic ester copolymer, and softening agent-alkylphenol epoxy hydrocarbon is added in the formulation design, which can weaken the secondary valence force between molecules, increase the molecular chain movement, reduce the crystallinity of high polymer, thereby greatly increasing the elongation of the material, and reducing the hardness thereof, thereby achieving the goal of low polymer cement ratio and high performance, but the anti-aging property is only dependent on the reaction of acrylic ester and cement, and the influence of ultraviolet rays on the high polymer chain segment is not changed, and the aging problem of the product can not be solved.
The Chinese patent application CN201310580652.2 'an anti-aging waterproof coating' and CN201310580662.6 'an improved anti-aging waterproof coating' are both single-component waterproof coatings prepared, and do not belong to the category of polymer cement waterproof coatings. The patent CN201310580652.2 is formed by mixing oligoester polyol, dipentaerythritol hexaacrylate, alkylphenol polyoxyethylene polyoxypropylene ether, ceramic micro powder and the like, and provides anti-aging performance by reacting various organic matters; patent CN201310580662.6 is a waterproof layer formed by reacting compound such as fluorochlorohydrocarbon resin, methyl guaiacol, white latex, propylene glycol methyl ether acetate, trimethylolpropane triacrylate, di-tert-butyl hydroquinone, etc. with aluminum-carbon firebrick powder, and the waterproof layer contains various organic substances and realizes aging resistance depending on its characteristics. However, the product composition and the product performance do not meet the requirements of polymer cement waterproof coatings, the application fields are greatly different and have no reference significance, and the organic solvent content is too high, so the environment-friendly performance requirements of the existing products are not met.
The invention also discloses an anti-aging bi-component waterproof coating, for example, the invention patent application CN201510562859.6 polymer cement waterproof mortar comprises liquid powder and powder, the liquid component comprises styrene-acrylic emulsion, dispersant, preservative, defoamer, water and the like, the powder component comprises a large amount of powder such as ordinary portland cement, superfine slag, superfine steel slag, desulfurized gypsum, graded quartz powder, bentonite, silicon oxide, diatomite and the like, wherein the styrene-acrylic emulsion mainly plays a role in connection and reinforcement, improves the compactness of a waterproof layer and the adhesion with a base layer, the waterproof effect is mainly provided by a waterproof layer formed by hydration of different cements, and the waterproof effect is slightly influenced by light depending on the characteristics of the cement, so the anti-aging performance is excellent. However, the invention is a rigid material, the execution standard of the invention is JC/T984-2011 Polymer Cement waterproof mortar, the product does not have the flexibility of the polymer cement waterproof coating, and the performances and the characteristics of the product are distinct.
Disclosure of Invention
The invention aims to solve the problems and provides an anti-aging polymer cement waterproof coating and a preparation method thereof.
In order to achieve the above object, a first aspect of the present invention provides an anti-aging polymer cement waterproof coating material, which comprises a liquid material and a powder material;
the liquid material comprises: 900 parts of ethylene-vinyl acetate emulsion, 30-90 parts of cyclohexane 1, 2-diisononyl phthalate, 2-4 parts of defoaming agent, 1-3 parts of dispersing agent, 0-5 parts of bactericide and 200 parts of water;
the powder material comprises: 100 portions of white cement, 900 portions of heavy calcium, 10 to 50 portions of titanium dioxide, 10 to 30 portions of 2,2, 4-trimethyl-1, 2-dihydroquinoline polymer, 5 to 20 portions of bis-salicylic acid bisphenol A ester and 1 to 10 portions of water reducing agent.
The invention firstly solves the problem that the waterproof performance of the polymer cement waterproof coating is attenuated when the polymer cement waterproof coating is exposed outdoors, so as to improve the waterproof performance of the product used outdoors. The invention adopts ethylene-vinyl acetate emulsion, takes cyclohexane 1, 2-diisononyl phthalate as a plasticizer, adds water and other auxiliary agents to prepare liquid materials, the powder material takes cement, heavy calcium and the like as main components, and adds titanium dioxide, bis-salicylic acid bisphenol A ester and 2,2, 4-trimethyl-1, 2-dihydroquinoline polymer as functional auxiliary agents, the waterproof membrane formed after the liquid and the powder are mixed is flexible and compact, the erosion of water to a base layer can be effectively prevented, simultaneously the addition of each functional auxiliary agent can effectively reduce the influence of ultraviolet rays on the waterproof layer, the aging resistance of the waterproof membrane is improved, and the waterproof layer can keep long-term waterproof effect.
The cyclohexane 1, 2-diisononyl diformate is used as a novel environment-friendly plasticizer, is prepared by hydrogenating an o-benzene plasticizer, and has low volatility and excellent low-temperature resistance. In the invention, the cyclohexane 1, 2-diisononyl phthalate has good compatibility with the ethylene-vinyl acetate emulsion, can effectively increase the flexibility and low-temperature performance of the coating, does not cause the migration problem of the o-benzene plasticizer, effectively avoids the condition that the performance of the coating is reduced due to the migration of the plasticizer after being irradiated by light for a long time, ensures the lasting stability of the waterproof layer and can keep the performance of the product for a long time.
In the powder system of the invention, the stable free radical in the 2,2, 4-trimethyl-1, 2-dihydroquinoline polymer can reduce the acetyl activity in the polymer ethylene-vinyl acetate emulsion, and the large benzene ring conjugate structure can dissipate the excitation energy emitted by ultraviolet light and inhibit and slow down the ultraviolet aging effect. Furthermore, the quinoline polymer has hydrophobic groups, and can inhibit and slow down the hydrolysis of the polymer emulsion after being compatible with the polymer emulsion.
In the powder system, the bis-salicylic acid bisphenol A ester compound does not absorb ultraviolet rays, but generates 2-hydroxybenzophenone with strong ultraviolet ray absorption effect by photo-Fries rearrangement under the action of illumination, so that the influence of the ultraviolet rays on the ethylene-vinyl acetate emulsion can be greatly reduced, and the aging resistance of the product is improved.
In the powder system, the main component of the titanium dioxide is titanium dioxide, and the titanium dioxide has high refractivity and high photoactivity, so that the titanium dioxide has strong ultraviolet resistance. When the titanium dioxide particles are irradiated by sunlight, the titanium dioxide particles with large particle sizes can reflect and refract ultraviolet rays, so that the influence of illumination on a coating film is reduced; with the reduction of the particle size, light can penetrate through the particle surface of the nano titanium dioxide, the reflection and scattering properties of ultraviolet rays in a long-wave region are not obvious, and the absorption of the ultraviolet rays in a medium-wave region is obviously enhanced, so that the influence on a high molecular chain can be reduced. Therefore, the influence of ultraviolet rays on the waterproof layer is effectively reduced by adding the titanium dioxide, and the durability of the waterproof layer is improved.
The powder of the invention is white substances such as white cement, heavy calcium carbonate, titanium dioxide and the like, white has strong reflection performance to sunlight, and can reflect most ultraviolet rays in the sunlight, thereby reducing the influence on the coating; secondly, the other functional auxiliary agent, namely 2-hydroxybenzophenone generated by the photo-Fries rearrangement of the bis-salicylic acid bisphenol A ester, has the function of strongly absorbing ultraviolet rays, so that the influence of the ultraviolet rays on a polymer chain is reduced; the large benzene ring conjugate structure in the other anti-aging substance, 2,2, 4-trimethyl-1, 2-dihydroquinoline polymer, can dissipate the excitation energy emitted by ultraviolet light, inhibit and slow down the ultraviolet aging effect, and finally can greatly reduce the influence of the ultraviolet light on the polymer under the synergistic effect of various components, thereby fundamentally improving the anti-aging performance of the product, and enabling the coating film to have good waterproof performance even under long-time illumination.
Preferably, the bactericide is 1-5 parts by weight.
Preferably, the ethylene-vinyl acetate emulsion is Wake 559 emulsion, and the glass transition temperature of the ethylene-vinyl acetate emulsion is 5 ℃.
Preferably, diisononyl cyclohexane-1, 2-dicarboxylate is basf HEXAMOLL DINCH.
Preferably, the defoaming agent is at least one selected from polyether defoaming agent, silicone defoaming agent and mineral oil defoaming agent; further preferably, the defoamer is a polyether defoamer. For example, the polyether defoamer can be selected from the Tri-benefits 628 defoamer.
Preferably, the dispersant is at least one selected from a polyacrylic acid sodium salt dispersant and an acrylic acid ammonium salt dispersant. For example, the sodium polyacrylate dispersant can be Rohm Haas 731A dispersant.
Preferably, the bactericide is a Soll MBS bactericide. The Sol MBS fungicide has the advantages of no bronopol, no formaldehyde or formaldehyde donor.
Preferably, the white cement is at least one selected from 32.5 white cement and 52.5 white cement; further preferably, the white cement is 32.5 white cement. For example, the 32.5 white cement can be Albo 32.5 white cement.
According to the invention, the coarse whiting can be selected from 300 mesh coarse whiting of Europe.
According to the invention, the titanium dioxide can be selected from 600-mesh titanium dioxide for python.
According to the invention, the 2,2, 4-trimethyl-1, 2-dihydroquinoline polymer can be selected from RD of Shanghai Kangjin chemical industry.
According to the invention, bisphenol A disalicylate can be BAD from Tianjin chemical industry Co.
Preferably, the water reducing agent is at least one selected from a naphthalene water reducing agent, a polycarboxylic acid water reducing agent and a melamine water reducing agent; further preferably, the water reducing agent is a naphthalene water reducing agent. For example, WG-Y with Tianjin Weigao can be used.
Preferably, the weight ratio of the titanium dioxide, the 2,2, 4-trimethyl-1, 2-dihydroquinoline polymer and the bis-salicylic acid bisphenol A ester is (1-2): (1.2-1.8): 1.
preferably, the weight ratio of the liquid material to the powder material is 1: (1-1.5).
The second aspect of the present invention provides a method for preparing the above-mentioned polymer cement waterproof coating material, comprising:
preparing a liquid material: uniformly mixing ethylene-vinyl acetate emulsion, cyclohexane 1, 2-diisononyl phthalate and water, then adding a dispersing agent and a defoaming agent, optionally adding a bactericide, and uniformly mixing to obtain the liquid material;
preparing powder: mixing white cement and coarse whiting uniformly, then adding titanium dioxide, 2, 4-trimethyl-1, 2-dihydroquinoline polymer, bis (salicylic acid) bisphenol A ester and a water reducing agent, and mixing uniformly to obtain the powder.
And when the powder is sold, the liquid material and the powder are separately packaged to obtain a finished product.
When the waterproof coating is used, the liquid material and the powder material are stirred together, then the coating is carried out, and a waterproof film is formed on the surface of the base layer through volatilization and drying of moisture, so that the waterproof effect is achieved.
After being dried into a film, the polymer cement waterproof coating is firmly adhered to the surface of a base layer, when the polymer cement waterproof coating is illuminated, the ultraviolet rays can break polymer chains in a coating film, and the expressed effects are that the coating is aged, the flexibility of the coating is reduced, and the coating is cracked and peeled off. The powder material adopts white cement and heavy calcium carbonate, and functional additives such as titanium dioxide, 2, 4-trimethyl-1, 2-dihydroquinoline polymer, bisphenol salicylic acid A ester and the like are added, so that the influence of ultraviolet rays on a coating film can be greatly reduced, the aging resistance of the product is improved, the product can be irradiated by sunlight in time, and the waterproof performance can be kept for a long time.
The invention has the beneficial effects that:
(1) the invention can form a stable and durable waterproof film. The polymer cement waterproof coating prepared by using the cyclohexane 1, 2-diisononyl diformate and the ethylene-vinyl acetate emulsion solves the problem of migration of common plasticizers of the products, and the finally formed waterproof film has stable and durable performance and cannot have the problem of performance reduction of the waterproof film caused by volatilization and migration of the plasticizer after film formation.
(2) The invention has excellent aging resistance. According to the polymer cement waterproof coating, due to the synergistic ultraviolet-resistant effect formed by the titanium dioxide, the 2,2, 4-trimethyl-1, 2-dihydroquinoline polymer and the bis-salicylic acid bisphenol A ester in the formula system, especially under the specific proportioning condition, even if the coating is illuminated for a long time, the product performance can be kept stable, the coating has excellent ageing resistance, the excellent waterproof effect is durably provided, and the use range of the polymer cement waterproof coating is widened to a certain extent.
(3) The invention has simple manufacturing method, low cost, environmental protection and no pollution, can be applied in mass production and has practicability.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In the embodiment of the invention, the ethylene-vinyl acetate emulsion is Wake 559 emulsion, and the glass transition temperature of the emulsion is 5 ℃; cyclohexane 1, 2-dicarboxylic acid diisononyl ester is basf HEXAMOLL DINCH; the antifoaming agent is a 628 antifoaming agent; the dispersant is Rohm Hass 731A dispersant; the bactericide is a Sol MBS bactericide; the white cement is albo 32.5 white cement; the coarse whiting is Europe Asia 300 mesh coarse whiting; the titanium dioxide is 600-mesh titanium dioxide of python; RD is RD (2,2, 4-trimethyl-1, 2-dihydroquinoline polymer) produced by Shanghai Kangjin chemical industry; BAD is BAD (bisphenol A disalicylate) produced by Tianjin chemical industry Co., Ltd; the water reducing agent is WG-Y with Tianjin vitamin height.
Example 1:
the embodiment provides an anti-aging polymer cement waterproof coating and a preparation method thereof.
Liquid material: 140 parts by weight of deionized water is metered and added into a liquid material stirring cylinder, a dispersion machine of the stirring cylinder is started, the rotating speed is kept at 1000 revolutions per minute, then 800 parts by weight of ethylene-vinyl acetate emulsion and 60 parts by weight of cyclohexane 1, 2-diisononyl phthalate are respectively metered and added into the liquid material stirring cylinder for dispersion for 10 minutes, then the stirring speed is reduced to 800 revolutions per minute, then 2 parts by weight of dispersing agent, 3 parts by weight of defoaming agent and 2 parts by weight of bactericide are metered and added into the liquid material stirring cylinder, and liquid material packaging can be carried out after stirring for 20 minutes.
Powder lot: starting a gravity-free powder stirring machine, keeping the rotating speed at 600 revolutions per minute, then adding 300 parts by weight of white cement into a powder stirring cylinder after metering, adding 665 parts by weight of heavy calcium into the stirring cylinder after metering, adding 10 parts by weight of titanium dioxide, 15 parts by weight of RD, 10 parts by weight of BAD and 3 parts by weight of water reducing agent into the gravity-free stirring cylinder, stirring for 10 minutes, and then packaging the powder.
And finally, mixing the liquid material and the powder material according to the weight ratio of the liquid material to the powder material: powder material 1: and 1.2, packaging in a combined manner to obtain a finished product.
Example 2:
the embodiment provides an anti-aging polymer cement waterproof coating and a preparation method thereof.
Liquid material: 140 parts by weight of deionized water is metered and added into a liquid material stirring cylinder, a dispersion machine of the stirring cylinder is started, the rotating speed is kept at 1000 revolutions per minute, then 800 parts by weight of ethylene-vinyl acetate emulsion and 60 parts by weight of cyclohexane 1, 2-diisononyl phthalate are respectively metered and added into the liquid material stirring cylinder for dispersion for 10 minutes, then the stirring speed is reduced to 800 revolutions per minute, then 2 parts by weight of dispersing agent, 3 parts by weight of defoaming agent and 2 parts by weight of bactericide are metered and added into the liquid material stirring cylinder, and liquid material packaging can be carried out after stirring for 20 minutes.
Powder lot: and starting a gravity-free powder stirrer, keeping the rotating speed at 600 revolutions per minute, then adding 300 parts by weight of white cement into a powder stirring cylinder after metering, adding 655 parts by weight of heavy calcium into the stirring cylinder after metering, adding 20 parts by weight of titanium dioxide, 15 parts by weight of RD, 10 parts by weight of BAD and 3 parts by weight of water reducer into the gravity-free stirring cylinder, stirring for 10 minutes, and then packaging the powder.
And finally, mixing the liquid material and the powder material according to the weight ratio: powder 1: and 1.2, packaging in a combined manner to obtain a finished product.
Comparative example 1:
the present comparative example provides a polymer cement waterproof coating and a method for preparing the same.
Liquid material: 140 parts by weight of deionized water is metered and added into a liquid material stirring cylinder, a dispersion machine of the stirring cylinder is started, the rotating speed is kept at 1000 revolutions per minute, then 800 parts by weight of ethylene-vinyl acetate emulsion and 60 parts by weight of cyclohexane 1, 2-diisononyl phthalate are respectively metered and added into the liquid material stirring cylinder for dispersion for 10 minutes, then the stirring speed is reduced to 800 revolutions per minute, then 2 parts by weight of dispersing agent, 3 parts by weight of defoaming agent and 2 parts by weight of bactericide are metered and added into the liquid material stirring cylinder, and liquid material packaging can be carried out after stirring for 20 minutes.
Powder lot: and starting the gravity-free powder stirrer, keeping the rotating speed at 600 revolutions per minute, metering 300 parts by weight of white cement, adding the white cement into a powder stirring cylinder, metering 695 parts by weight of heavy calcium, adding the heavy calcium into the stirring cylinder, adding 5 parts by weight of RD and 3 parts by weight of water reducer into the gravity-free stirring cylinder, stirring for 10 minutes, and packaging the powder.
And finally, mixing the liquid material and the powder material according to the weight ratio: powder 1: and 1.2, packaging in a combined manner to obtain a finished product.
Comparative example 2:
the present comparative example provides a polymer cement waterproof coating and a method for preparing the same.
Liquid material: 140 parts by weight of deionized water is metered and added into a liquid material stirring cylinder, a dispersion machine of the stirring cylinder is started, the rotating speed is kept at 1000 revolutions per minute, then 800 parts by weight of ethylene-vinyl acetate emulsion and 60 parts by weight of cyclohexane 1, 2-diisononyl phthalate are respectively metered and added into the liquid material stirring cylinder for dispersion for 10 minutes, then the stirring speed is reduced to 800 revolutions per minute, then 2 parts by weight of dispersing agent, 3 parts by weight of defoaming agent and 2 parts by weight of bactericide are metered and added into the liquid material stirring cylinder, and liquid material packaging can be carried out after stirring for 20 minutes.
Powder lot: and starting the gravity-free powder stirrer, keeping the rotating speed at 600 revolutions per minute, then adding 300 parts by weight of white cement into a powder stirring cylinder after metering, adding 685 parts by weight of heavy calcium into the stirring cylinder after metering, adding 15 parts by weight of RD and 3 parts by weight of water reducing agent into the gravity-free stirring cylinder, stirring for 10 minutes, and then packaging the powder.
And finally, mixing the liquid material and the powder material according to the weight ratio: powder 1: and 1.2, packaging in a combined manner to obtain a finished product.
Comparative example 3:
the present comparative example provides a polymer cement waterproof coating and a method for preparing the same.
Liquid material: 140 parts by weight of deionized water is metered and added into a liquid material stirring cylinder, a dispersion machine of the stirring cylinder is started, the rotating speed is kept at 1000 revolutions per minute, then 800 parts by weight of ethylene-vinyl acetate emulsion and 60 parts by weight of cyclohexane 1, 2-diisononyl phthalate are respectively metered and added into the liquid material stirring cylinder for dispersion for 10 minutes, then the stirring speed is reduced to 800 revolutions per minute, then 2 parts by weight of dispersing agent, 3 parts by weight of defoaming agent and 2 parts by weight of bactericide are metered and added into the liquid material stirring cylinder, and liquid material packaging can be carried out after stirring for 20 minutes.
Powder lot: and starting the gravity-free powder stirrer, keeping the rotating speed at 600 revolutions per minute, then adding 300 parts by weight of white cement into a powder stirring cylinder after metering, adding 670 parts by weight of heavy calcium into the stirring cylinder after metering, adding 30 parts by weight of RD and 3 parts by weight of water reducing agent into the gravity-free stirring cylinder, stirring for 10 minutes, and then packaging the powder.
And finally, mixing the liquid material and the powder material according to the weight ratio: powder 1: and 1.2, packaging in a combined manner to obtain a finished product.
Comparative example 4:
the present comparative example provides a polymer cement waterproof coating and a method for preparing the same.
Liquid material: 140 parts by weight of deionized water is metered and added into a liquid material stirring cylinder, a dispersion machine of the stirring cylinder is started, the rotating speed is kept at 1000 revolutions per minute, then 800 parts by weight of ethylene-vinyl acetate emulsion and 60 parts by weight of cyclohexane 1, 2-diisononyl phthalate are respectively metered and added into the liquid material stirring cylinder for dispersion for 10 minutes, then the stirring speed is reduced to 800 revolutions per minute, then 2 parts by weight of dispersing agent, 3 parts by weight of defoaming agent and 2 parts by weight of bactericide are metered and added into the liquid material stirring cylinder, and liquid material packaging can be carried out after stirring for 20 minutes.
Powder lot: and starting the gravity-free powder stirrer, keeping the rotating speed at 600 revolutions per minute, then adding 300 parts by weight of white cement into a powder stirring cylinder after metering, adding 680 parts by weight of heavy calcium into the stirring cylinder after metering, adding 15 parts by weight of RD, 5 parts by weight of BAD and 3 parts by weight of water reducing agent into the gravity-free stirring cylinder, and stirring for 10 minutes to package the powder.
And finally, mixing the liquid material and the powder material according to the weight ratio: powder 1: and 1.2, packaging in a combined manner to obtain a finished product.
Comparative example 5:
the present comparative example provides a polymer cement waterproof coating and a method for preparing the same.
Liquid material: 140 parts by weight of deionized water is metered and added into a liquid material stirring cylinder, a dispersion machine of the stirring cylinder is started, the rotating speed is kept at 1000 revolutions per minute, then 800 parts by weight of ethylene-vinyl acetate emulsion and 60 parts by weight of cyclohexane 1, 2-diisononyl phthalate are respectively metered and added into the liquid material stirring cylinder for dispersion for 10 minutes, then the stirring speed is reduced to 800 revolutions per minute, then 2 parts by weight of dispersing agent, 3 parts by weight of defoaming agent and 2 parts by weight of bactericide are metered and added into the liquid material stirring cylinder, and liquid material packaging can be carried out after stirring for 20 minutes.
Powder lot: and starting the gravity-free powder stirrer, keeping the rotating speed at 600 revolutions per minute, then adding 300 parts by weight of white cement into a powder stirring cylinder after metering, adding 675 parts by weight of heavy calcium into the stirring cylinder after metering, adding 15 parts by weight of RD, 10 parts by weight of BAD and 3 parts by weight of water reducing agent into the gravity-free stirring cylinder, stirring for 10 minutes, and then packaging the powder.
And finally, mixing the liquid material and the powder material according to the weight ratio: powder 1: and 1.2, packaging in a combined manner to obtain a finished product.
Comparative example 6:
the present comparative example provides a polymer cement waterproof coating and a method for preparing the same.
Liquid material: 140 parts by weight of deionized water is metered and added into a liquid material stirring cylinder, a dispersion machine of the stirring cylinder is started, the rotating speed is kept at 1000 revolutions per minute, then 800 parts by weight of ethylene-vinyl acetate emulsion and 60 parts by weight of cyclohexane 1, 2-diisononyl phthalate are respectively metered and added into the liquid material stirring cylinder for dispersion for 10 minutes, then the stirring speed is reduced to 800 revolutions per minute, then 2 parts by weight of dispersing agent, 3 parts by weight of defoaming agent and 2 parts by weight of bactericide are metered and added into the liquid material stirring cylinder, and liquid material packaging can be carried out after stirring for 20 minutes.
Powder lot: starting a gravity-free powder stirrer, keeping the rotating speed at 600 revolutions per minute, then adding 300 parts by weight of white cement into a powder stirring cylinder after metering, adding 665 parts by weight of heavy calcium into the stirring cylinder after metering, adding 15 parts by weight of RD, 20 parts by weight of BAD and 3 parts by weight of water reducing agent into the gravity-free stirring cylinder, and stirring for 10 minutes to package the powder.
And finally, mixing the liquid material and the powder material according to the weight ratio: powder 1: and 1.2, packaging in a combined manner to obtain a finished product.
The amounts (parts by weight) of the components used in examples 1-2 and comparative examples 1-6 are shown in Table 1:
TABLE 1
The polymer cement waterproof coatings obtained in examples 1-2 and comparative examples 1-6 were tested according to the performance indexes of no-treatment tensile strength, no-treatment elongation at break, ultraviolet treatment elongation at break and ultraviolet treatment tensile strength specified in GB/T23445-:
TABLE 2
From comparative examples 1,2 and 3, it can be seen that with the increase of RD in the product system, the tensile strength and the elongation at break of the non-treatment show a descending trend, but the result after the ultraviolet treatment shows a descending trend after ascending, mainly because RD needs more emulsion to wrap as an organic matter, the reaction between the emulsion and the cement is influenced, and the non-treatment performance always shows a descending trend; after the ultraviolet treatment, the aging inhibitor RD is too little to completely dissipate the excitation energy, so that the macromolecular structure of the polymer in the polymer cement waterproof coating is damaged to generate cracks, and therefore, a sufficient amount is needed to ensure the performance of the product, and after the sufficient amount of RD is obtained, too much RD affects the reaction between the emulsion and the cement, so that the ultraviolet treatment has the tendency of rising firstly and then falling;
it can be seen from comparative examples 2,4, 5 and 6 that the tensile strength and elongation at break of the non-treated steel sheet tend to decrease with the increase of BAD in the product system, but the result after UV treatment tends to increase first and then decrease, the main reason is similar to that of RD, but BAD absorbs UV and can form a synergistic effect with RD, so the matching effect is better than that of RD or BAD used alone.
It can be seen from comparative example 5, example 1 and example 2 that with the increase of the titanium dioxide amount of the product system, the untreated tensile strength and elongation at break of the product are not changed basically, and the elongation at break and tensile strength after ultraviolet treatment are increased and then kept unchanged basically, because the titanium dioxide also serves as a filler to participate in the reaction with the emulsion in the untreated environment, the titanium dioxide is not changed obviously compared with the heavy calcium carbonate; in the ultraviolet treatment process, the titanium dioxide mainly reflects ultraviolet rays and absorbs the ultraviolet rays, when the whiteness of a coating film reaches a certain degree, the reflection of the ultraviolet rays is not obviously improved by increasing the amount of the titanium dioxide, and the absorption of the ultraviolet rays depends on particles with smaller particle sizes in the titanium dioxide powder, so that the absorption effect is lower than that of BAD; however, the titanium dioxide is used as inorganic powder, and the addition of the titanium dioxide can form a new synergistic effect with BDA and RD. Especially, when the functional additives titanium dioxide, RD and BAD satisfy a certain proportion (example 1-2), the anti-ultraviolet effect is the most excellent.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. An anti-aging polymer cement waterproof coating is characterized by comprising a liquid material and a powder material;
the liquid material comprises: 900 parts of ethylene-vinyl acetate emulsion, 30-90 parts of cyclohexane 1, 2-diisononyl phthalate, 2-4 parts of defoaming agent, 1-3 parts of dispersing agent, 0-5 parts of bactericide and 200 parts of water;
the powder material comprises: 100 portions of white cement, 900 portions of heavy calcium, 10 to 50 portions of titanium dioxide, 10 to 30 portions of 2,2, 4-trimethyl-1, 2-dihydroquinoline polymer, 5 to 20 portions of bis-salicylic acid bisphenol A ester and 1 to 10 portions of water reducing agent;
preferably, the bactericide is 1 to 5 parts by weight.
2. The polymer cement waterproofing coating according to claim 1, wherein the ethylene-vinyl acetate emulsion is a Wacker 559 emulsion.
3. The polymer cement waterproofing coating according to claim 1, wherein the defoaming agent is selected from at least one of a polyether type defoaming agent, a silicone defoaming agent, and a mineral oil defoaming agent;
preferably, the defoamer is a polyether defoamer.
4. The polymer cement waterproof coating material according to claim 1, wherein the dispersant is at least one selected from a polyacrylic acid sodium salt dispersant and an acrylic acid ammonium salt dispersant.
5. The polymer cement waterproofing coating according to claim 1, wherein the bactericide is a Soll MBS bactericide.
6. The polymer cement waterproofing coating according to claim 1, wherein the white cement is at least one selected from 32.5 white cement and 52.5 white cement;
preferably, the white cement is 32.5 white cement.
7. The polymer cement waterproof coating material according to claim 1, wherein the water reducing agent is at least one selected from a naphthalene water reducing agent, a polycarboxylic acid water reducing agent, and a melamine water reducing agent;
preferably, the water reducing agent is a naphthalene water reducing agent.
8. The polymer cement waterproof coating as claimed in claim 1, wherein the weight ratio of the titanium dioxide, the 2,2, 4-trimethyl-1, 2-dihydroquinoline polymer and the bis-salicylic acid bisphenol A ester is (1-2): (1.2-1.8): 1.
9. the polymer cement waterproof coating material according to claim 1, wherein the weight ratio of the liquid material to the powder material is 1: (1-1.5).
10. The method of preparing a polymer cement waterproofing paint according to any of claims 1 to 9, characterized in that it comprises:
preparing a liquid material: uniformly mixing ethylene-vinyl acetate emulsion, cyclohexane 1, 2-diisononyl phthalate and water, then adding a dispersing agent and a defoaming agent, optionally adding a bactericide, and uniformly mixing to obtain the liquid material;
preparing powder: mixing white cement and coarse whiting uniformly, then adding titanium dioxide, 2, 4-trimethyl-1, 2-dihydroquinoline polymer, bis (salicylic acid) bisphenol A ester and a water reducing agent, and mixing uniformly to obtain the powder.
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