CN115385605A - Two-component water-based epoxy color sand crack beautifying agent and preparation method and application thereof - Google Patents
Two-component water-based epoxy color sand crack beautifying agent and preparation method and application thereof Download PDFInfo
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- CN115385605A CN115385605A CN202211036262.4A CN202211036262A CN115385605A CN 115385605 A CN115385605 A CN 115385605A CN 202211036262 A CN202211036262 A CN 202211036262A CN 115385605 A CN115385605 A CN 115385605A
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/14—Polyepoxides
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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
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
- C04B2111/00672—Pointing or jointing 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
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a two-component water-based epoxy colored sand crack sealer, which comprises a resin component and a curing agent component; the resin component comprises a waterborne epoxy resin; the curing agent component comprises a waterborne epoxy resin curing agent; the weight activity equivalent ratio of the waterborne epoxy resin to the waterborne epoxy resin curing agent is 1.6-0.8. The invention also discloses a preparation method and application of the seam beautifying agent. The invention fundamentally solves the problem of poor weather resistance of an aromatic system through alicyclic modification, and achieves the anti-yellowing effect by the coordination of the hindered phenol antioxidant and the termination of the thermo-oxidative aging chain reaction. And the epoxy group in the water-based epoxy resin and the active hydrogen functional group in the water-based epoxy curing agent are subjected to crosslinking reaction to form a network structure, so that the crack sealer can have high strength, high mechanical property and binding power. The seam beautifying agent is an aqueous system, is green and environment-friendly, and has good weather resistance, aging resistance and yellowing resistance.
Description
Technical Field
The invention relates to the field of building materials, relates to a crack sealer, and particularly relates to a two-component water-based epoxy colored sand crack sealer as well as a preparation method and application thereof.
Background
The building materials are a general term for materials used in civil engineering and construction work. It can be divided into structural material, decorative material and some special materials. The structural materials comprise wood, bamboo, stone, cement, concrete, metal, tiles, ceramics, glass, engineering plastics, composite materials and the like; the decorative material comprises various coatings, paints, plating layers, veneers, ceramic tiles with various colors, glass with special effects and the like; the special material is used for water proofing, moisture proofing, corrosion prevention, fire prevention, flame retardance, sound insulation, heat preservation, sealing and the like.
The ceramic tiles in the building are used as main building materials for decoration of inner and outer walls and ground of the building, and a certain gap needs to be reserved between the ceramic tiles to avoid hollowing between the ceramic tiles due to expansion with heat and contraction with cold, and the gap needs to be filled with a ceramic tile gap filler. The ceramic tile joint mixture is upgraded from inorganic white cement and rubber powder ceramic tile joint mixture (also called as joint mixture) to epoxy joint mixture. The main components of the joint mixture are cement, calcium carbonate powder, talcum powder, rubber powder and the like, the joint mixture is easy to blacken and mildew and breed bacteria, the color is monotonous, the waterproof effect is poor, the upgraded epoxy joint mixture has the advantages of water resistance, mildew resistance, scratch resistance, rich color and the like, is more and more popular, and is very popular in occasions such as joint filling of household floor tiles of living rooms and marble floors in public places by adopting the epoxy joint mixture.
Although the application range of the epoxy crack sealer is rapidly expanded, the whole effect is good, but some problems still exist in the practical use process. There are two main aspects:
first, the weather resistance is poor. From the viewpoint of molecular structure, the epoxy resin has an aromatic ring structure which is poor in UV resistance and poor in flexibility. The existing plasticizer toughening method can only achieve the effect in a short time, adhesive tapes are easy to age and crack along with the migration of the plasticizer, so that local strip-shaped falling is caused, and the service life is only 2-3 years especially in places which can be irradiated by sunlight and have large temperature difference change, such as positions near windowsills, balconies, hotel lobbies, glass doors, lower parts of commercial complex skylights and the like.
Second, the yellowing resistance is poor. The seam beautifying agent is usually made into white, silver gray and other light color systems so as to have an aesthetic effect, is easy to yellow after being used for a period of time, influences the decorative effect and the beauty, and is not suitable for decorative application with high quality requirements.
Based on the above, the application provides a two-component water-based epoxy color sand crack beautifying agent, and a preparation method and application thereof, so as to solve the problems in the prior art.
Disclosure of Invention
The invention aims to solve the technical problem mentioned in the background technology and provides a two-component water-based epoxy colored sand crack beautifying agent with strong weather resistance, yellow discoloration resistance and excellent aging cracking resistance.
In order to solve the problems, the invention aims to provide a two-component water-based epoxy colored sand crack sealer, which comprises a resin component and a curing agent component;
the resin component comprises a waterborne epoxy resin; the curing agent component comprises a waterborne epoxy resin curing agent;
the weight activity equivalent ratio of the waterborne epoxy resin to the waterborne epoxy resin curing agent is 1.6-0.8;
the waterborne epoxy resin comprises, by weight, 50-150 parts of waterborne epoxy resin, 30-70 parts of natural colored sand, 100-200 parts of glass sand, 10-40 parts of pearlescent pigment, 3-6 parts of fumed silica, 0.2-0.5 part of antioxidant and 1-1.5 parts of inorganic nano light stabilizer;
the waterborne epoxy resin curing agent comprises, by weight, 50-150 parts of a waterborne epoxy curing agent, 30-70 parts of natural colored sand, 100-200 parts of glass sand, 3-6 parts of fumed silica, 0.3-0.6 part of an ultraviolet light absorber and 0.2-0.5 part of a flow stopping agent.
Preferably, the aqueous epoxy resin is an aqueous epoxy resin modified by a common epoxy resin and an alicyclic epoxy resin, wherein the ratio of the common epoxy resin to the alicyclic epoxy resin is 1:0.5-2.
Preferably, the natural color sand is composed of one or more of white snow, white marble, dry red, chinese black, yellow marble, gray marble and Chinese black with 120-180 meshes, and the glass sand is 100-300 meshes.
Preferably, the pearlescent pigment is composed of one or more of noble gold powder, noble silver powder, bright porcelain white, sub-light gray, ivory gold, ivory white, moonlight silver, metal gray and bright porcelain black.
Preferably, the fumed silica is a hydrophilic type fumed silica.
Preferably, the antioxidant is one or more of bis (1-octyloxy-2, 6-tetramethyl-4-piperidyl) sebacate, bis (1, 2, 6-pentamethyl-4-piperidyl) sebacate, 4- [ (4, 6-dioctylthio-1, 3, 5-triazin-2-yl) amino ] -2, 6-di-tert-butylphenol.
Preferably, the inorganic nano light stabilizer consists of one or more of zinc oxide, titanium dioxide and aluminum oxide.
Preferably, the ultraviolet light absorber is one or more of UV-531, UV-P, UV-326, UV327 and UV-320.
The invention also aims to provide a preparation method of the two-component water-based epoxy colored sand crack sealer, which comprises the following steps:
preparation of resin component: adding the waterborne epoxy resin into a stirring tank with a vacuumizing function, heating to 80-90 ℃ under a stirring state, vacuumizing and stirring for 10-20min, then adding fumed silica, an antioxidant and an inorganic nano light stabilizer, stirring for 10-15min under a vacuum state, finally adding natural colored sand, glass sand and a pearlescent pigment, and stirring uniformly under a vacuum state;
preparation of curing agent component: adding the waterborne epoxy curing agent into a stirring tank with a vacuumizing function, starting stirring, slowly adding the fumed silica, the ultraviolet light absorber and the flow stopping agent, stirring for 10-20min under vacuum, adding the natural colored sand and the glass sand, and stirring for 5-10min under vacuum.
In addition, the invention also provides the application of the two-component water-based epoxy colored sand crack beautifying agent, and the resin component and the curing agent component are mixed and then filled into the crack.
The invention has the following beneficial effects:
the water-based epoxy resin used by the existing crack sealer is modified by aromatic epoxy resin, the epoxy resin used by the invention belongs to alicyclic epoxy resin modification, and an aromatic epoxy resin modification system contains a benzene ring structure, so that the weather resistance and yellowing resistance of the aromatic epoxy resin modification system are poor. And the epoxy group in the water-based epoxy resin and the active hydrogen functional group in the water-based epoxy curing agent are subjected to crosslinking reaction to form a network structure, so that the crack sealer can have high strength, high mechanical property and binding power.
The two-component water-based epoxy color sand crack beautifying agent is a water-based system, is green and environment-friendly, has good weather resistance, aging resistance and yellowing resistance, and can meet market requirements.
Drawings
FIG. 1 is a graph showing the results of UVA resistance test experiments conducted in examples of the present invention.
Detailed Description
The technical solutions in the embodiments will be clearly and completely described below. It is apparent that the embodiments to be described below are only a part of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the embodiments of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the invention. As used in this description of embodiments of the invention and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The embodiment provides a two-component water-based epoxy color sand crack beautifying agent, which comprises a resin component and a curing agent component;
wherein the resin component comprises a water-based epoxy resin; the curing agent component comprises a water-based epoxy resin curing agent;
and the weight activity equivalent ratio of the waterborne epoxy resin to the waterborne epoxy resin curing agent is 1.6-0.8;
specifically, the waterborne epoxy resin comprises, by weight, 50-150 parts of waterborne epoxy resin, 30-70 parts of natural colored sand, 100-200 parts of glass sand, 10-40 parts of pearlescent pigment, 3-6 parts of fumed silica, 0.2-0.5 part of antioxidant and 1-1.5 parts of inorganic nano light stabilizer;
the water-based epoxy resin curing agent comprises, by weight, 50-150 parts of a water-based epoxy curing agent, 30-70 parts of natural colored sand, 100-200 parts of glass sand, 3-6 parts of fumed silica, 0.3-0.6 part of an ultraviolet light absorber and 0.2-0.5 part of a flow stopping agent.
The aliphatic epoxy resin used in the invention is a yellowing-resistant epoxy resin, has the characteristics of low viscosity, high transparency and no discoloration for a long time, can be cured at room temperature when amine or modified amine is used as a curing agent, and a cured product of the epoxy resin has good ultraviolet resistance, can resist aging for a long time, does not discolor and has very good transparency. Radically overcomes the defect of insufficient weatherability of the epoxy resin.
In addition, the antioxidant prevents the epoxy resin from oxidative yellowing by selecting a hindered amine-based antioxidant such as bis (1-octyloxy-2, 6-tetramethyl-4-piperidyl) sebacate, bis (1, 2, 6-pentamethyl-4-piperidyl) sebacate, etc., and a hindered phenol-based antioxidant such as 4- [ (4, 6-dioctylthio-1, 3, 5-triazin-2-yl) amino ] -2, 6-di-t-butylphenol, etc., which act synergistically.
And ultraviolet light absorbers such as: UV-531, UV-P, UV-326, UV327, UV-320, and the like. By adding the antioxidant and the ultraviolet absorber into the crack beautifying agent and under the synergistic action of the antioxidant and the ultraviolet absorber, the possibility of yellowing caused by carbonyl generated by oxidation of a bisphenol A structure is reduced, and the yellowing resistance effect of the adhesive is greatly improved.
The inorganic nano light stabilizer is used at the same time: such as zinc oxide, titanium dioxide, aluminum oxide and the like, and the prepared crack beautifying agent has better yellowing resistance.
The specific embodiment is as follows:
example 1
A two-component water-based epoxy color sand crack beautifying agent comprises a resin component and a curing agent component;
the resin component comprises a waterborne epoxy resin; the curing agent component comprises a waterborne epoxy resin curing agent;
the weight activity equivalent ratio of the waterborne epoxy resin to the waterborne epoxy resin curing agent is 1;
the waterborne epoxy resin comprises, by weight, 50 parts of waterborne epoxy resin, 30 parts of natural colored sand, 100 parts of glass sand, 10 parts of pearlescent pigment, 3 parts of fumed silica, 0.2 part of antioxidant and 1 part of inorganic nano light stabilizer;
the waterborne epoxy resin curing agent comprises, by weight, 50 parts of waterborne epoxy curing agent, 30 parts of natural colored sand, 100 parts of glass sand, 3 parts of fumed silica, 0.3 part of ultraviolet light absorber and 0.2 part of flow stopping agent.
The waterborne epoxy resin is mainly modified by common epoxy resin and alicyclic epoxy resin, wherein the ratio of the common epoxy resin to the alicyclic epoxy resin is 1:0.5.
wherein the natural color sand consists of 120-180 meshes of snowflake white, white marble and dry red, and the glass sand is 100-300 meshes.
The pearlescent pigment is composed of noble gold powder, noble silver powder and bright porcelain white.
Wherein the fumed silica is hydrophilic fumed silica.
Wherein the antioxidant is bis (1-octyloxy-2, 6-tetramethyl-4-piperidyl) sebacic acid.
Wherein the inorganic nano light stabilizer consists of zinc oxide and titanium dioxide.
Wherein the ultraviolet light absorber consists of UV-531, UV-P and UV-326.
The preparation method of the two-component water-based epoxy colored sand crack sealer comprises the following steps:
preparation of resin component: adding the waterborne epoxy resin into a stirring tank with a vacuumizing function, heating to 80 ℃ under a stirring state, vacuumizing and stirring for 10min, then adding the fumed silica, the antioxidant and the inorganic nano light stabilizer, stirring for 10min under a vacuum state, finally adding the natural colored sand, the glass sand and the pearlescent pigment, and stirring uniformly under a vacuum state;
preparation of curing agent component: adding the waterborne epoxy curing agent into a stirring tank with a vacuumizing function, starting stirring, slowly adding the fumed silica, the ultraviolet light absorber and the flow stopping agent, stirring for 10min in vacuum, adding the natural colored sand and the glass sand, and stirring for 5min in vacuum.
Example 2
A two-component water-based epoxy color sand crack beautifying agent comprises a resin component and a curing agent component;
the resin component comprises a waterborne epoxy resin; the curing agent component comprises a waterborne epoxy resin curing agent;
the weight activity equivalent ratio of the waterborne epoxy resin to the waterborne epoxy resin curing agent is 1;
the waterborne epoxy resin comprises, by weight, 150 parts of waterborne epoxy resin, 70 parts of natural colored sand, 200 parts of glass sand, 40 parts of pearlescent pigment, 6 parts of fumed silica, 0.5 part of antioxidant and 1.5 parts of inorganic nano light stabilizer;
the waterborne epoxy resin curing agent comprises, by weight, 150 parts of a waterborne epoxy curing agent, 70 parts of natural colored sand, 200 parts of glass sand, 6 parts of fumed silica, 0.6 part of an ultraviolet light absorber and 0.5 part of a flow stopping agent.
The waterborne epoxy resin is mainly modified by common epoxy resin and alicyclic epoxy resin, wherein the ratio of the common epoxy resin to the alicyclic epoxy resin is 1:2.
wherein the natural color sand is composed of 120-180 meshes of Chinese black, yellow jade and gray jade, and the glass sand is 100-300 meshes.
The pearlescent pigment consists of moonlight silver, metal ash and bright porcelain black.
Wherein the fumed silica is hydrophilic fumed silica.
Wherein the antioxidant is 4- [ (4, 6-dioctylthio-1, 3, 5-triazin-2-yl) amino ] -2.
Wherein the inorganic nano light stabilizer consists of titanium dioxide and aluminum oxide.
Wherein the ultraviolet light absorber consists of UV-326, UV327 and UV-320.
The preparation method of the two-component water-based epoxy color sand crack sealer comprises the following steps:
preparation of resin component: adding the waterborne epoxy resin into a stirring tank with a vacuumizing function, heating to 90 ℃ under a stirring state, vacuumizing and stirring for 20min, then adding the fumed silica, the antioxidant and the inorganic nano light stabilizer, stirring for 15min under a vacuum state, finally adding the natural colored sand, the glass sand and the pearlescent pigment, and stirring uniformly under a vacuum state;
preparation of curing agent component: adding the waterborne epoxy curing agent into a stirring tank with a vacuumizing function, starting stirring, slowly adding the fumed silica, the ultraviolet light absorber and the flow stopping agent, stirring for 20min under vacuum, adding the natural colored sand and the glass sand, and stirring for 10min under vacuum.
Example 3
A two-component water-based epoxy color sand crack beautifying agent comprises a resin component and a curing agent component;
the resin component comprises a waterborne epoxy resin; the curing agent component comprises a waterborne epoxy resin curing agent;
the weight activity equivalent ratio of the waterborne epoxy resin to the waterborne epoxy resin curing agent is 1;
the waterborne epoxy resin comprises 100 parts by weight of waterborne epoxy resin, 55 parts by weight of natural colored sand, 150 parts by weight of glass sand, 25 parts by weight of pearlescent pigment, 4 parts by weight of fumed silica, 0.4 part by weight of antioxidant and 1.2 parts by weight of inorganic nano light stabilizer;
the waterborne epoxy resin curing agent comprises, by weight, 90 parts of a waterborne epoxy curing agent, 55 parts of natural colored sand, 160 parts of glass sand, 5 parts of fumed silica, 0.5 part of an ultraviolet light absorber and 0.3 part of a flow stopping agent.
The waterborne epoxy resin is mainly modified by common epoxy resin and alicyclic epoxy resin, wherein the ratio of the common epoxy resin to the alicyclic epoxy resin is 1:1.
wherein the natural color sand consists of 120-180 meshes of snowflake white gray jade and Chinese black, and the glass sand ranges from 100-300 meshes.
Wherein, the pearlescent pigment consists of ivory white, moonlight silver and bright porcelain black.
Wherein the fumed silica is hydrophilic fumed silica.
Wherein the antioxidant is composed of bis (1-octyloxy-2, 6-tetramethyl-4-piperidyl) sebacate, bis (1, 2, 6-pentamethyl-4-piperidyl) sebacate and 4- [ (4, 6-dioctylthio-1, 3, 5-triazin-2-yl) amino ] -2, 6-di-tert-butylphenol.
Wherein the inorganic nano light stabilizer consists of zinc oxide, titanium dioxide and aluminum oxide.
Wherein the ultraviolet light absorber consists of UV327 and UV-320.
The preparation method of the two-component water-based epoxy colored sand crack sealer comprises the following steps:
preparation of resin component: adding the waterborne epoxy resin into a stirring tank with a vacuumizing function, heating to 85 ℃ under a stirring state, vacuumizing and stirring for 15min, then adding the fumed silica, the antioxidant and the inorganic nano light stabilizer, stirring for 13min under a vacuum state, finally adding the natural colored sand, the glass sand and the pearlescent pigment, and stirring uniformly under a vacuum state;
preparation of curing agent component: adding the waterborne epoxy curing agent into a stirring tank with a vacuumizing function, starting stirring, slowly adding the fumed silica, the ultraviolet light absorber and the flow stopping agent, stirring for 15min under vacuum, adding the natural colored sand and the glass sand, and stirring for 7min under vacuum.
Example 4
A two-component water-based epoxy color sand crack beautifying agent comprises a resin component and a curing agent component;
the resin component comprises a waterborne epoxy resin; the curing agent component comprises a waterborne epoxy resin curing agent;
the weight activity equivalent ratio of the waterborne epoxy resin to the waterborne epoxy resin curing agent is 1;
the waterborne epoxy resin comprises, by weight, 70 parts of waterborne epoxy resin, 35 parts of natural colored sand, 120 parts of glass sand, 15 parts of pearlescent pigment, 4 parts of fumed silica, 0.3 part of antioxidant and 1.1 part of inorganic nano light stabilizer;
the waterborne epoxy resin curing agent comprises, by weight, 130 parts of a waterborne epoxy curing agent, 60 parts of natural colored sand, 170 parts of glass sand, 5 parts of fumed silica, 0.5 part of an ultraviolet light absorber and 0.4 part of a flow stopping agent.
The waterborne epoxy resin is mainly modified by common epoxy resin and alicyclic epoxy resin, wherein the ratio of the common epoxy resin to the alicyclic epoxy resin is 1:1.5.
wherein the natural color sand consists of white snowflake, white marble and dry red with 120-180 meshes, and the glass sand consists of 100-300 meshes.
Wherein, the pearlescent pigment is composed of noble metal powder, ivory white and bright porcelain black.
Wherein the fumed silica is hydrophilic fumed silica.
Wherein the antioxidant is 4- [ (4, 6-dioctylthio-1, 3, 5-triazin-2-yl) amino ] -2, 6-di-tert-butylphenol.
Wherein the inorganic nano light stabilizer consists of zinc oxide and aluminum oxide.
Wherein the ultraviolet light absorber consists of UV-531 and UV-320.
The preparation method of the two-component water-based epoxy colored sand crack sealer comprises the following steps:
preparation of resin component: adding the waterborne epoxy resin into a stirring tank with a vacuumizing function, heating to 83 ℃ under a stirring state, vacuumizing and stirring for 13min, then adding the fumed silica, the antioxidant and the inorganic nano light stabilizer, stirring for 12min under a vacuum state, finally adding the natural colored sand, the glass sand and the pearlescent pigment, and stirring uniformly under a vacuum state;
preparation of curing agent component: adding the waterborne epoxy curing agent into a stirring tank with a vacuum pump, starting stirring, slowly adding the fumed silica, the ultraviolet light absorber and the flow stopping agent, stirring for 11min under vacuum, adding the natural colored sand and the glass sand, and stirring for 6min under vacuum.
Example 5
A two-component water-based epoxy color sand crack beautifying agent comprises a resin component and a curing agent component;
the resin component comprises a waterborne epoxy resin; the curing agent component comprises a waterborne epoxy resin curing agent;
the weight activity equivalent ratio of the waterborne epoxy resin to the waterborne epoxy resin curing agent is 1;
the waterborne epoxy resin comprises 130 parts by weight of waterborne epoxy resin, 60 parts by weight of natural colored sand, 180 parts by weight of glass sand, 35 parts by weight of pearlescent pigment, 5 parts by weight of fumed silica, 0.4 part by weight of antioxidant and 1.4 parts by weight of inorganic nano light stabilizer;
the waterborne epoxy resin curing agent comprises, by weight, 120 parts of a waterborne epoxy curing agent, 55 parts of natural colored sand, 170 parts of glass sand, 5.5 parts of fumed silica, 0.5 part of an ultraviolet light absorber and 0.4 part of a flow stopping agent.
The waterborne epoxy resin is mainly modified by common epoxy resin and alicyclic epoxy resin, wherein the ratio of the common epoxy resin to the alicyclic epoxy resin is 1:1.7.
wherein the natural color sand consists of 120-180 meshes of snowflake white, white marble and dry red, and the glass sand is 100-300 meshes.
The pearlescent pigment is composed of noble gold powder, noble silver powder and bright porcelain white.
Wherein the fumed silica is hydrophilic fumed silica.
Wherein the antioxidant is composed of bis (1-octyloxy-2, 6-tetramethyl-4-piperidyl) sebacate and bis (1, 2, 6-pentamethyl-4-piperidyl) sebacate.
Wherein the inorganic nano light stabilizer consists of zinc oxide, titanium dioxide and aluminum oxide.
Wherein the ultraviolet light absorber consists of UV-326, UV327 and UV-320.
The preparation method of the two-component water-based epoxy color sand crack sealer comprises the following steps:
preparation of resin component: adding the waterborne epoxy resin into a stirring tank with a vacuumizing function, heating to 88 ℃ under a stirring state, vacuumizing and stirring for 18min, then adding the fumed silica, the antioxidant and the inorganic nano light stabilizer, stirring for 13min under a vacuum state, finally adding the natural colored sand, the glass sand and the pearlescent pigment, and stirring uniformly under a vacuum state;
preparation of curing agent component: adding the waterborne epoxy curing agent into a stirring tank with a vacuumizing function, starting stirring, slowly adding the fumed silica, the ultraviolet light absorber and the flow stopping agent, stirring for 18min under vacuum, adding the natural colored sand and the glass sand, and stirring for 9min under vacuum.
Experimental example 1
Comparative Performance test
After the seam beautifying agents prepared in examples 1-5 and commercially available seam beautifying agents are coated, the seam beautifying agents are cured for 7 days at normal temperature, and relevant performances are detected, wherein the detection methods and results are shown in the following table:
examples 1 to 5 and the results of the detection of commercially available crack sealer:
as can be seen from the table, after the crack sealer prepared by the embodiment of the invention and the crack sealer on the market are coated and maintained normally for 7 days, through detection, compared with the performances of the crack sealer and the crack sealer, the crack sealer provided by the invention has the characteristics of excellent yellowing resistance, good flexibility, high tensile strength and high elongation at break.
Experimental example 2
UVA-resistant test experiment
The results of the ultraviolet yellowing resistance test of the caulking agent of example 1 and a commercial caulking agent in accordance with GB/T23987-2009 are shown in FIG. 1.
As can be seen from fig. 1, the crack sealer on the market begins to yellow in 7 days, and obviously yellows in 14 days, while the crack sealer prepared by the invention has no obvious yellowing in 30 days.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A two-component water-based epoxy color sand crack beautifying agent is characterized by comprising a resin component and a curing agent component;
the resin component comprises a waterborne epoxy resin; the curing agent component comprises a waterborne epoxy resin curing agent;
the weight activity equivalent ratio of the waterborne epoxy resin to the waterborne epoxy resin curing agent is 1;
the waterborne epoxy resin comprises, by weight, 50-150 parts of waterborne epoxy resin, 30-70 parts of natural colored sand, 100-200 parts of glass sand, 10-40 parts of pearlescent pigment, 3-6 parts of fumed silica, 0.2-0.5 part of antioxidant and 1-1.5 parts of inorganic nano light stabilizer;
the waterborne epoxy resin curing agent comprises, by weight, 50-150 parts of a waterborne epoxy curing agent, 30-70 parts of natural colored sand, 100-200 parts of glass sand, 3-6 parts of fumed silica, 0.3-0.6 part of an ultraviolet light absorber and 0.2-0.5 part of a flow stopping agent.
2. The two-component aqueous epoxy color sand crack sealer according to claim 1, wherein the aqueous epoxy resin is an aqueous epoxy resin modified by a common epoxy resin and an alicyclic epoxy resin, wherein the ratio of the common epoxy resin to the alicyclic epoxy resin is 1:0.5-2.
3. The two-component aqueous epoxy color sand crack sealer according to claim 1, wherein the natural color sand is composed of one or more of white snow, white marble, dry red, chinese black, yellow marble, gray marble and Chinese black of 120-180 meshes, and the glass sand is 100-300 meshes.
4. The two-component aqueous epoxy colored sand crack sealer according to claim 1, wherein the pearlescent pigment is composed of one or more of noble gold powder, noble silver powder, bright porcelain white, sub-light gray, ivory gold, ivory white, moonlight silver, metal gray, and bright porcelain black.
5. The two-component aqueous epoxy color sand crack sealer according to claim 1, wherein the fumed silica is hydrophilic fumed silica.
6. The two-component aqueous epoxy color sand crack sealer according to claim 1, wherein the antioxidant is one or more of bis (1-octyloxy-2, 6-tetramethyl-4-piperidyl) sebacate, bis (1, 2, 6-pentamethyl-4-piperidyl) sebacate, and 4- [ (4, 6-dioctylthio-1, 3, 5-triazin-2-yl) amino ] -2, 6-di-tert-butylphenol.
7. The two-component aqueous epoxy colored sand crack sealer according to claim 1, wherein the inorganic nano light stabilizer is composed of one or more of zinc oxide, titanium dioxide and aluminum oxide.
8. The two-component aqueous epoxy colored sand crack sealer according to claim 1, wherein the ultraviolet light absorber is one or more of UV-531, UV-P, UV-326, UV327 and U V-320.
9. The preparation method of the two-component water-based epoxy color sand crack sealer according to any one of claims 1-8, characterized by comprising the following steps:
preparation of resin component: adding the waterborne epoxy resin into a stirring tank with a vacuumizing function, heating to 80-90 ℃ under the stirring state, vacuumizing and stirring for 10-20min, then adding the fumed silica, the antioxidant and the inorganic nano light stabilizer, stirring for 10-15min under the vacuum state, finally adding the natural colored sand, the glass sand and the pearlescent pigment, and uniformly stirring under the vacuum state;
preparation of curing agent component: adding the waterborne epoxy curing agent into a stirring tank with a vacuumizing function, starting stirring, slowly adding the fumed silica, the ultraviolet light absorber and the flow stopping agent, stirring for 10-20min under vacuum, adding the natural colored sand and the glass sand, and stirring for 5-10min under vacuum.
10. The use of the two-component water-based epoxy color sand crack sealer according to any one of claims 1 to 8, wherein a resin component and a curing agent component are mixed and then filled into a crack.
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| CN115385605B (en) | 2023-04-14 |
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