CN116063903A - Wear-resistant epoxy floor coating and preparation method thereof - Google Patents

Wear-resistant epoxy floor coating and preparation method thereof Download PDF

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Publication number
CN116063903A
CN116063903A CN202310211744.7A CN202310211744A CN116063903A CN 116063903 A CN116063903 A CN 116063903A CN 202310211744 A CN202310211744 A CN 202310211744A CN 116063903 A CN116063903 A CN 116063903A
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wear
parts
coating
floor coating
curing agent
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CN116063903B (en
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米尔科·格鲁博
刘昭洋
王志娟
张仁飞
贾二鹏
刘广宁
刘江涛
胡涛
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Sichuan Concrete Road Technology Co ltd
Shijiazhuang Chang'an Yucai Building Materials Co ltd
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Sichuan Concrete Road Technology Co ltd
Shijiazhuang Chang'an Yucai Building Materials Co ltd
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    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
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    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
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    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
    • C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
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    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
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    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
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    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
    • C08G59/50—Amines
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    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
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    • C09D7/61—Additives non-macromolecular inorganic
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    • 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
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    • C—CHEMISTRY; METALLURGY
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    • 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
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
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Abstract

The invention provides a wear-resistant epoxy floor coating, which is prepared from the following raw materials of a base coating with epoxy resin and an amine curing agent with a urea structure; nucleophilic substitution reaction is carried out between the amine curing agent containing urea structure and epoxy group of epoxy resin, so that long-chain polyether soft segment in the amine curing agent containing urea structure is introduced into molecular structure, and micro-phase separation structure can be formed. Meanwhile, the invention also provides a preparation method of the wear-resistant epoxy floor coating. According to the wear-resistant epoxy floor coating disclosed by the invention, the microphase separation structure of polyurea is introduced into the epoxy floor coating, so that the floor coating is endowed with better wear resistance, and the service life of the wear-resistant epoxy floor coating is effectively prolonged.

Description

Wear-resistant epoxy floor coating and preparation method thereof
Technical Field
The invention relates to the technical field of coatings, in particular to a wear-resistant epoxy floor coating, and simultaneously relates to a preparation method of the wear-resistant epoxy floor coating.
Background
The floor paint is mainly prepared from a plurality of different substances such as resin, filler, pigment, additive, diluent or solvent through a plurality of production processes such as mixing, dissolving, dispersing and the like, and can be divided into decorative floor paint, heavy-duty floor paint and the like according to functions, and has the characteristics of brightness, reality, attractive appearance, wear resistance, water resistance, corrosion resistance and the like. The epoxy floor paint has good mechanical property, corrosion resistance and wear resistance, so that the epoxy floor paint is widely applied.
The epoxy floor paint is a high-strength, wear-resistant and attractive floor, and has the advantages of no seam, solid texture, good drug resistance, corrosion resistance, dust prevention, convenient maintenance, low maintenance cost and the like. Various schemes such as thin layer coating, self-leveling ground with the thickness of 1-5mm, anti-skid and wear-resistant coating, mortar coating, anti-static and anti-corrosion coating and the like can be designed according to different application requirements. Is suitable for various fields, such as: factory building, computer lab, warehouse, laboratory, ward, operating room, workshop etc.
The existing epoxy floor paint has the advantages of strong binding power with cement and other base materials, low curing shrinkage, excellent mechanical properties and the like, and has the advantages of good corrosion resistance, good permeation resistance and the like for water, medium strong acid, alkali, other common solvents and the like. Therefore, the epoxy floor paint is widely applied to floor decoration of purification workshops such as electronic appliances, foods, medicines and the like. However, the existing epoxy floor paint also has the problems of higher hardness and unsatisfactory wear resistance, so that the service life of the epoxy floor paint is shorter and the use effect is poor.
Disclosure of Invention
In view of the above, the invention aims to provide a wear-resistant epoxy floor coating which can improve wear resistance and has longer service life.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the preparation raw materials of the wear-resistant epoxy floor coating mainly comprise a base coating with epoxy resin and an amine curing agent with a urea structure; the amine curing agent containing the urea structure and the epoxy group of the epoxy resin undergo nucleophilic substitution reaction so as to introduce a long-chain polyether soft segment into a molecular structure, and a microphase separation structure can be formed.
Further, the weight ratio of the base coating to the urea-structure-containing amine curing agent is 3-5: 1.
further, the urea structure-containing curing agent PEAA is prepared from toluene diisocyanate, polyether amine and diethyl toluene diamine.
Further, the urea structure-containing curing agent PEAA has a molecular structure as follows:
Figure BDA0004112943700000021
further, the molar ratio of toluene diisocyanate to diethyl toluene diamine is 2:1, a step of; the molar ratio of the toluene diisocyanate and the reaction product of the diethyl toluene diamine to the polyetheramine is 1:2.
further, the components for preparing the base coating are respectively as follows in parts by weight: 100 parts of epoxy resin, 5-20 parts of diluent, 50-120 parts of heavy calcium carbonate, 10-20 parts of talcum powder, 0.5-2 parts of titanium pigment, 0.5-2 parts of ferric oxide pigment, 0.05-1 part of dispersing agent, 0.05-1 part of defoaming agent, 0.5-2 parts of anti-settling agent and 0.05-1 part of flatting agent.
Further, the particle size of the heavy calcium carbonate is 325-5000 meshes; and/or, the particle size of the talcum powder is 325-5000 meshes; and/or the particle size of the titanium dioxide is 325-5000 meshes; and/or the particle size of the iron oxide pigment is 325-700 meshes.
Further, the epoxy resin is bisphenol A epoxy resin or bisphenol F epoxy resin which is liquid under the condition of room temperature; and/or, the diluent is a reactive diluent; and/or, the defoamer is an organosilicon defoamer; and/or the anti-settling agent is one of polyamide modified hydrogenated castor oil, polyurea, polyamide and organic bentonite; and/or the leveling agent is one of an organosilicon rheological aid and an acrylic rheological aid.
The invention also provides a preparation method of the wear-resistant epoxy floor coating, which comprises the following steps:
s1, preparing and obtaining a base coating containing epoxy resin;
s2, grinding the base paint to obtain the base material with uniformly dispersed pigment and filler;
and S3, during construction, adding the urea-structure-containing amine curing agent into the ground base coating, and stirring until the mixture is uniform.
Further, the grinding duration in the step S2 is 10-30min; and/or, the urea structure-containing amine curing agent is made at room temperature.
Compared with the prior art, the invention has the following advantages:
(1) According to the wear-resistant epoxy floor coating disclosed by the invention, through the use of the urea-structure-containing amine curing agent, nucleophilic substitution reaction can be carried out with epoxy groups of epoxy resin, and long-chain polyether soft segments are introduced into a molecular structure to form a microphase separation structure, so that the microphase separation structure of polyurea can be introduced into the epoxy floor coating, and further the wear resistance and impact resistance of a paint film of the coating are improved, so that the epoxy floor coating has excellent wear resistance, and the service life of the epoxy floor coating is effectively prolonged.
(2) The wear-resistant epoxy floor coating prepared by the preparation method of the wear-resistant epoxy floor coating disclosed by the invention has the advantages of high wear resistance, high impact resistance and long service life, and the preparation method of the wear-resistant epoxy floor coating is simple in process, mild in condition and suitable for industrial production and use.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In addition, unless specifically described otherwise, each term and process referred to in this embodiment is understood by those skilled in the art in light of the commonly recognized and conventional approaches in the art.
The invention relates to a wear-resistant epoxy floor coating, which mainly comprises a base coating with epoxy resin and an amine curing agent with a urea structure. The amine curing agent containing the urea structure and epoxy groups of the epoxy resin undergo nucleophilic substitution reaction so as to introduce long-chain polyether soft segments in the amine curing agent containing the urea structure into a molecular structure, thereby being capable of forming a microphase separation structure.
Specifically, the microphase separation structure is formed by connecting a soft segment containing long-chain polyether with a hard segment of epoxy resin in an amine curing agent containing urea structure to form a microphase separation structure similar to polyurethane, wherein the soft segment is connected with the hard segment through chemical bonds but is not thermally compatible, so that microphase separation is formed. One of the invention is that the microphase separation structure of polyurea is introduced into the epoxy floor paint, so that the wear resistance of the epoxy floor is improved.
Preferably, the weight ratio of the base coating to the urea structure-containing amine curing agent is 3-5: 1. in the specific implementation, the weight ratio between the base coating and the urea structure-containing amine curing agent can be as follows: 1. 3.5: 1. 4: 1. 4.5: 1. 5:1, etc. to facilitate optimal wear resistance.
Meanwhile, as preferable urea-containing structure curing agent PEAA is made of toluene diisocyanate, polyether amine and diethyl toluene diamine, and when specifically made, toluene diisocyanate may be TDI-100, polyether amine may be D2000 and diethyl toluene diamine may be E100.
It should be noted that, in this embodiment, the molecular structure of the curing agent PEAA containing urea structure is:
Figure BDA0004112943700000041
preferably, toluene diisocyanate and diethyltoluene diamine are used in a molar ratio of 2:1, and the reacted product is mixed with polyetheramine in a molar ratio of 1:2, and obtaining the urea-containing structural curing agent PEAA after reaction.
Wherein, the reaction equation of toluene diisocyanate and diethyl toluene diamine is:
Figure BDA0004112943700000051
the reaction equation of the reaction product of toluene diisocyanate and diethyl toluene diamine with polyetheramine is:
Figure BDA0004112943700000052
also as preferable, the base paint of the invention comprises the following components in parts by weight: 100 parts of epoxy resin, 5-20 parts of diluent, 50-120 parts of heavy calcium carbonate, 10-20 parts of talcum powder, 0.5-2 parts of titanium pigment, 0.5-2 parts of ferric oxide pigment, 0.05-1 part of dispersing agent, 0.05-1 part of defoaming agent, 0.5-2 parts of anti-settling agent and 0.05-1 part of flatting agent.
In the invention, the thinner can reduce the use viscosity of the paint, thereby improving the use performance of the paint. The heavy calcium and the talcum powder mainly play a role in filling, so that the manufacturing cost is reduced. Meanwhile, the epoxy resin coating has a certain toughening effect and a covering function on the epoxy resin. Talcum powder also has certain functions of preventing sedimentation and improving the water resistance of the coating.
The titanium dioxide has high refractive index and can endow the paint with high hiding power. Iron oxide pigments are mainly used for decorative requirements and hiding properties of coatings. The dispersing agent is mainly used for dispersing and stabilizing pigment and filler in the paint. The defoamer is mainly used for eliminating bubbles caused by stirring in the coating processing process. The anti-settling agent is mainly used for adjusting the thixotropic property of the paint, thereby meeting the requirement of storage stability. The leveling agent can promote the paint to form a smooth and even coating film in the drying and film forming process.
In practical application, the epoxy resin is bisphenol A epoxy resin or bisphenol F epoxy resin which is liquid at room temperature, such as bisphenol A epoxy resin E51, bisphenol A epoxy resin E44 or bisphenol F epoxy resin F44, etc. The diluent is a reactive diluent, such as BGE, AGE, 622, 636 or 692. The defoamer is organosilicon defoamer, such as by adopting the modesty 6800, the Yingchuang Tego900, the Dachuan H1129, the dakangning AFE7610, the Dow DF103, the Tiande DJ1356 or the south Hui CI120, etc.
The anti-settling agent is one of polyamide modified hydrogenated castor oil, polyurea, polyamide and organic bentonite, such as Acomat MT, acomat LV, court 908, qingdan DH6900, di Sibaron 6900-2X or Noono NY-200. The leveling agent is one of organosilicon rheological aid and acrylic rheological aid, such as Pick BYK333, pick BYK354, pick BYK3700, sandingjia SDJ3007, silogo 313 or Qingdan DH 3170.
In addition, the above-mentioned dispersing agent is used, for example, in the form of Pick BYK111, pick BYK164, basoff Efka FA 4608AN, dow Corning DC-51, silok7465N, silok7045 or Santa Cla SDJ 8012.
When the wear-resistant epoxy floor coating is specifically manufactured, preferably, the particle size of heavy calcium is 325-5000 meshes, the particle size of talcum powder is 325-5000 meshes, the particle size of titanium dioxide is 325-5000 meshes, and the particle size of ferric oxide pigment is 325-700 meshes.
Of course, the diluents, dispersants, defoamers, iron oxide pigments, anti-settling agents and leveling agents mentioned above may be used in practice with other conventional alternatives having similar functions as known to those skilled in the art.
Meanwhile, the invention also provides a preparation method of the wear-resistant epoxy floor coating, which comprises the following steps:
s1, preparing and obtaining a base coating containing epoxy resin;
s2, grinding the base paint to obtain a base material with uniformly dispersed filler;
and S3, adding the urea-structure-containing amine curing agent into the ground base coating during construction, and stirring until the mixture is uniform.
And preferably, the grinding duration in the step S2 is 10-30min. Meanwhile, the urea structure-containing amine curing agent is prepared at room temperature.
In the concrete implementation, in the step S1, in the process of obtaining the base coating containing the epoxy resin, stirring is also needed, for example, the epoxy resin, the diluent, the dispersing agent, the defoaming agent and the leveling agent are added into a stirrer, and stirred for 5-10min to be uniformly dispersed at the stirring speed of 1500-2000 r/min; adding titanium pigment and ferric oxide pigment, continuously stirring at a stirring speed of 1500-2000r/min for 30-60min until uniformity, finally adding heavy calcium carbonate, talcum powder and anti-settling agent, and stirring again at the same stirring speed for 30-60min until uniformity to form the base coating.
It is worth to be noted that, the stirring speed and stirring time in the stirring process can also be set and adjusted correspondingly according to actual stirring requirements, so as to ensure that materials in each step are uniformly mixed, for example, the stirring speed is 1000-2500rpm, and the stirring time is 5-80 minutes. Moreover, the stirrer can be a conventional stirring device with a high-speed dispersing function.
The following examples are chosen to illustrate the invention in detail.
Example 1
The wear-resistant epoxy floor coating comprises the following raw materials in parts by weight: adding 100 parts of bisphenol A type E51 epoxy resin, 10 parts of diluent BGE, 0.05 part of dispersant Pick BYK111, 6800.05 parts of defoamer De-motor and 0.05 part of flatting agent Pick BYK354 into a stirrer, stirring for 5min at a stirring speed of 1500r/min until the mixture is uniformly dispersed, adding 1250-mesh 0.5 parts of titanium dioxide and 400-mesh 0.5 parts of ferric oxide green, and continuously stirring for 30min at a stirring speed of 1500r/min until the mixture is uniformly stirred;
finally, 50 parts of heavy calcium 1250 mesh, 10 parts of talcum powder 1250 mesh and 0.5 part of anti-sedimentation agent, namely, the humus pratus 908 are added, and stirred again for 30 minutes to be uniform at the same stirring speed, so that the base coating is formed. At this time, the above base paint was ground for 10 minutes to obtain a base material in which the pigment filler was uniformly dispersed.
The urea-containing structural curing agent PEAA of the wear-resistant epoxy floor coating comprises the following raw materials and steps: toluene diisocyanate and diethyl toluene diamine are firstly mixed according to a molar ratio of 2:1, and the reacted product is mixed with polyetheramine in a molar ratio of 1:2, and the urea-containing structural curing agent PEAA can be prepared after the reaction.
During construction, the base material and the urea structure-containing curing agent PEAA are mixed according to a weight ratio of 3.5:1, so that the wear-resistant epoxy floor coating of the embodiment can be prepared.
Example 2
The wear-resistant epoxy floor coating comprises the following raw materials in parts by weight: adding 100 parts of bisphenol A type E51 epoxy resin, 15 parts of diluent AGE, 0.5 part of dispersant Pick BYK111, 0.5 part of defoamer Dachuan H1129 and 0.5 part of flatting agent Pick BYK333 into a stirrer, stirring at a stirring speed of 2000r/min for 10min to uniformly disperse, adding 1.0 part of titanium dioxide powder 3000 meshes and 1.5 parts of ferric oxide blue 600 meshes, and continuously stirring at a stirring speed of 2000r/min for 60min to uniformly disperse;
finally, adding 3000-mesh 80 parts of heavy calcium, 3000-mesh 20 parts of talcum powder and 1.0 part of anti-settling agent Acomat MT, and stirring again for 60min to be uniform at the same stirring speed to form the base coating. At this time, the above base paint was ground for 30 minutes to obtain a base material in which pigment and filler were uniformly dispersed.
The urea-containing structural curing agent PEAA of the wear-resistant epoxy floor coating comprises the following raw materials and steps: toluene diisocyanate and diethyl toluene diamine are firstly mixed according to a molar ratio of 2:1, and the reacted product is mixed with polyetheramine in a molar ratio of 1:2, and the urea-containing structural curing agent PEAA can be prepared after the reaction.
During construction, the base material and the urea structure-containing curing agent PEAA are mixed according to a weight ratio of 4:1, so that the wear-resistant epoxy floor coating of the embodiment can be prepared.
Example 3
The wear-resistant epoxy floor coating comprises the following raw materials in parts by weight: adding 100 parts of bisphenol A type E44 epoxy resin, 20 parts of diluent BGE, 1.0 part of dispersing agent Sanding nail SDJ8012, 1.0 part of defoaming agent Yingzhangchu Tego and 1.0 part of flatting agent Pick BYK354 into a stirrer, stirring for 8min at the stirring speed of 1800r/min to uniformly disperse, adding 2.0 parts of titanium dioxide powder of 2000 meshes and 2.0 parts of ferric oxide red of 500 meshes, and continuously stirring for 45min at the stirring speed of 1800r/min to uniformly disperse;
finally, 110 parts of heavy calcium with 2000 meshes, 15 parts of talcum powder with 2000 meshes and 2.0 parts of anti-settling agent Acomalv 8 are added, and stirring is carried out again for 45 minutes until uniform at the same stirring speed, so as to form the base coating. At this time, the above base paint was ground for 20 minutes to obtain a base material in which the pigment filler was uniformly dispersed.
The urea-containing structural curing agent PEAA of the wear-resistant epoxy floor coating comprises the following raw materials and steps: toluene diisocyanate and diethyl toluene diamine are firstly mixed according to a molar ratio of 2:1, and the reacted product is mixed with polyetheramine in a molar ratio of 1:2, and the urea-containing structural curing agent PEAA can be prepared after the reaction.
During construction, the base material and the urea structure-containing curing agent PEAA are mixed according to a weight ratio of 5:1, so that the wear-resistant epoxy floor coating of the embodiment can be prepared.
Example 4
The wear-resistant epoxy floor coating comprises the following raw materials in parts by weight: adding 100 parts of bisphenol F epoxy resin F, 692 10 parts of diluent, 0.05 part of dispersant Dow Corning DC-51, 7610.05 parts of defoamer Dow Corning AFE and 3700.05 parts of flatting agent BYK3700 into a stirrer, stirring for 5min at a stirring speed of 1500r/min until the mixture is uniformly dispersed, adding 1250-mesh 0.5 parts of titanium dioxide and 325-mesh 0.5 parts of ferric oxide green, and continuing stirring for 30min at a stirring speed of 1500r/min until the mixture is uniform;
finally, 50 parts of heavy calcium carbonate (325 meshes), 10 parts of talcum powder (325 meshes) and 6900-2X0.5 parts of anti-settling agent Di Siba long are added, and stirred again for 30min to be uniform at the same stirring speed, so as to form the base coating. At this time, the above base paint was ground for 10 minutes to obtain a base material in which the pigment filler was uniformly dispersed.
The urea-containing structural curing agent PEAA of the wear-resistant epoxy floor coating comprises the following raw materials and steps: toluene diisocyanate and diethyl toluene diamine are firstly mixed according to a molar ratio of 2:1, and the reacted product is mixed with polyetheramine in a molar ratio of 1:2, and the urea-containing structural curing agent PEAA can be prepared after the reaction.
During construction, the base material and the urea structure-containing curing agent PEAA are mixed according to a weight ratio of 3.5:1, so that the wear-resistant epoxy floor coating of the embodiment can be prepared.
Example 5
The wear-resistant epoxy floor coating comprises the following raw materials in parts by weight: adding 100 parts of bisphenol A type E51 epoxy resin, 15 parts of diluent, 0.5 part of dispersing agent Silok7465N, 0.5 part of defoaming agent Tiande DJ1356 and 0.5 part of leveling agent Qingdian DH3170 into a stirrer, stirring at a stirring speed of 2000r/min for 10min to uniformly disperse, adding 1.0 part of titanium dioxide with 5000 meshes and 1.5 parts of ferric oxide blue with 700 meshes, and continuously stirring at a stirring speed of 2000r/min for 60min to uniformly disperse;
finally, 80 parts of heavy calcium with 5000 meshes, 20 parts of talcum powder with 5000 meshes and 1.0 part of anti-settling agent Noyi NY-200 are added, and stirring is carried out again for 60 minutes until uniform under the same stirring speed, so as to form the base coating. At this time, the above base paint was ground for 30 minutes to obtain a base material in which pigment and filler were uniformly dispersed.
The urea-containing structural curing agent PEAA of the wear-resistant epoxy floor coating comprises the following raw materials and steps: toluene diisocyanate and diethyl toluene diamine are firstly mixed according to a molar ratio of 2:1, and the reacted product is mixed with polyetheramine in a molar ratio of 1:2, and the urea-containing structural curing agent PEAA can be prepared after the reaction.
During construction, the base material and the urea structure-containing curing agent PEAA are mixed according to a weight ratio of 4:1, so that the wear-resistant epoxy floor coating of the embodiment can be prepared.
Comparative example 1
The wear-resistant epoxy floor coating comprises the following raw materials in parts by weight: adding 100 parts of bisphenol A type E51 epoxy resin, 10 parts of diluent BGE, 0.05 part of dispersant Pick BYK111, 6800.05 parts of defoamer De-motor and 0.05 part of flatting agent Pick BYK354 into a stirrer, stirring for 5min at a stirring speed of 1500r/min until the mixture is uniformly dispersed, adding 1250-mesh 0.5 parts of titanium dioxide and 400-mesh 0.5 parts of ferric oxide green, and continuously stirring for 30min at a stirring speed of 1500r/min until the mixture is uniformly stirred;
finally, 50 parts of heavy calcium 1250 mesh, 10 parts of talcum powder 1250 mesh and 0.5 part of anti-sedimentation agent, namely, the humus pratus 908 are added, and stirred again for 30 minutes to be uniform at the same stirring speed, so that the base coating is formed. At this time, the above base paint was ground for 10 minutes to obtain a base material in which the pigment filler was uniformly dispersed.
During construction, the base material and the phenolic amine T31 are mixed according to the weight ratio of 3.5:1, so that the wear-resistant epoxy floor coating of the comparative example 1 can be prepared.
Comparative example 2
The wear-resistant epoxy floor coating comprises the following raw materials in parts by weight: adding 100 parts of bisphenol A type E51 epoxy resin, 10 parts of diluent BGE, 0.05 part of dispersant Pick BYK111, 6800.05 parts of defoamer De-motor and 0.05 part of flatting agent Pick BYK354 into a stirrer, stirring for 5min at a stirring speed of 1500r/min until the mixture is uniformly dispersed, adding 1250-mesh 0.5 parts of titanium dioxide and 400-mesh 0.5 parts of ferric oxide green, and continuously stirring for 30min at a stirring speed of 1500r/min until the mixture is uniformly stirred;
finally, 50 parts of heavy calcium 1250 mesh, 10 parts of talcum powder 1250 mesh and 0.5 part of anti-sedimentation agent, namely, the humus pratus 908 are added, and stirred again for 30 minutes to be uniform at the same stirring speed, so that the base coating is formed. At this time, the above base paint was ground for 10 minutes to obtain a base material in which the pigment filler was uniformly dispersed.
During construction, the base material and polyetheramine D2000 are mixed according to the weight ratio of 3.5:1, and the wear-resistant epoxy floor coating of the comparative example 2 can be prepared.
In order to better illustrate the characteristics of the abrasion-resistant epoxy floor coatings provided in examples 1 to 5 of the present invention, the abrasion-resistant epoxy floor coatings prepared in the following examples were subjected to performance tests, and the test results are shown in table 1:
table 1 shows the abrasion value test results of the abrasion-resistant epoxy floor coating prepared in each example
Figure BDA0004112943700000111
As can be seen from Table 1, the abrasion resistance of the abrasion-resistant epoxy floor coating using the urea-containing curing agent PEAA as the curing agent is smaller than that of the abrasion-resistant epoxy floor coating using conventional curing agents such as phenolic amine T31 or polyether amine D2000 as the curing agent, and the abrasion resistance is better.
According to the wear-resistant epoxy floor coating disclosed by the invention, the urea-structure-containing amine curing agent is added, so that the microphase separation structure of polyurea can be introduced into the epoxy resin, and further the wear resistance and impact resistance of a paint film of the coating are improved, so that the epoxy floor coating has excellent wear resistance, and the service life of the epoxy floor coating is effectively prolonged.
In addition, when the wear-resistant epoxy floor coating is used, the base coating and the urea-structure-containing amine curing agent are uniformly mixed according to corresponding proportion to prepare the coating to be used, and then the coating is coated on the floor surface in a rolling coating mode, a troweling mode or a brushing mode.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (10)

1. The utility model provides a wear-resisting type epoxy terrace coating which characterized in that:
the preparation raw materials of the epoxy floor coating mainly comprise a base coating with epoxy resin and an amine curing agent with a urea structure;
the amine curing agent containing the urea structure and the epoxy group of the epoxy resin undergo nucleophilic substitution reaction so as to introduce a long-chain polyether soft segment in the amine curing agent containing the urea structure into a molecular structure, thereby being capable of forming a microphase separation structure.
2. The wear-resistant epoxy floor coating of claim 1, wherein:
the weight ratio of the base coating to the urea-structure-containing amine curing agent is 3-5: 1.
3. the wear-resistant epoxy floor coating of claim 1, wherein:
the urea structure-containing curing agent PEAA is prepared from toluene diisocyanate, polyether amine and diethyl toluene diamine.
4. A wear resistant epoxy floor coating as set forth in claim 3, wherein:
the urea structure-containing curing agent PEAA has a molecular structure as follows:
Figure FDA0004112943690000011
5. a wear resistant epoxy floor coating as set forth in claim 3, wherein:
the molar ratio of toluene diisocyanate to diethyl toluene diamine was 2:1, a step of;
the molar ratio of the toluene diisocyanate and the reaction product of the diethyl toluene diamine to the polyetheramine is 1:2.
6. the wear resistant epoxy floor coating of any one of claims 1 to 5, wherein:
the components for preparing the base coating are as follows in parts by weight:
100 parts of epoxy resin, 5-20 parts of diluent, 50-120 parts of heavy calcium carbonate, 10-20 parts of talcum powder, 0.5-2 parts of titanium pigment, 0.5-2 parts of ferric oxide pigment, 0.05-1 part of dispersing agent, 0.05-1 part of defoaming agent, 0.5-2 parts of anti-settling agent and 0.05-1 part of flatting agent.
7. The wear-resistant epoxy floor coating of claim 6, wherein:
the particle size of the heavy calcium carbonate is 325-5000 meshes;
and/or, the particle size of the talcum powder is 325-5000 meshes;
and/or the particle size of the titanium dioxide is 325-5000 meshes;
and/or the particle size of the iron oxide pigment is 325-700 meshes.
8. The wear-resistant epoxy floor coating of claim 6, wherein:
the epoxy resin is bisphenol A epoxy resin or bisphenol F epoxy resin which is liquid at room temperature;
and/or, the diluent is a reactive diluent;
and/or, the defoamer is an organosilicon defoamer;
and/or the anti-settling agent is one of polyamide modified hydrogenated castor oil, polyurea, polyamide and organic bentonite;
and/or the leveling agent is one of an organosilicon rheological aid and an acrylic rheological aid.
9. The preparation method of the wear-resistant epoxy floor coating is characterized by comprising the following steps of:
s1, preparing and obtaining a base coating containing epoxy resin;
s2, grinding the base paint to obtain the base material uniformly dispersed by the filler;
and S3, during construction, adding the urea-structure-containing amine curing agent into the ground base coating, and stirring until the mixture is uniform.
10. The method for preparing the wear-resistant epoxy floor coating according to claim 9, which is characterized in that:
the grinding duration in the step S2 is 10-30min; and/or, the urea structure-containing amine curing agent is made at room temperature.
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