Internal and external combined three-dimensional downstream face waterproof coating and preparation method thereof

Abstract

The invention discloses an inside and outside combined three-dimensional downstream face waterproof coating and a preparation method thereof. The downstream face waterproof coating is prepared from 100 parts by weight of a component A, 5-100 parts by weight of a component B and 0-50 parts by weight of a component C, wherein the component A consists of the following components in percentage by weight: 35%-92% of matrix resin, 5%-55% of three-dimensional base material penetrating fluid, 5%-55% of three-dimensional base material penetrating compounding fluid, 0.01%-1% of a three-dimensional base material penetrating conditioning agent and 5%-35% of performance enhancing fluid, and the component B consists of the following components in percentage by weight: 30%-98% of a high-strength cross-linking curing agent, 10%-75% of a high-toughness cross-linking curing agent and 1%-45% of a cross-linking curing accelerator; and the component C is a special environmental reaction enhancer which is a sulfhydryl compound or ketimine. The waterproof coating for the downstream face has excellent waterproof performance and anti-seepage waterproof coating mechanical performance, and the waterproof requirement of the downstream face is met.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof coatings, and particularly relates to an internal and external combined three-dimensional back surface waterproof coating and a preparation method thereof. Background Art

[0002] The waterproof problem of concrete structures has always been one of the key issues affecting the strength and service life of concrete structures. At present, generally, external waterproofing of concrete structures is mostly carried out, that is, waterproofing on the water-facing surface of concrete structures. Methods include coatings and rolls. If the concrete is not pre-treated with external waterproofing or the external waterproofing fails, since most external waterproofing belongs to hidden works, in most cases, if external waterproofing construction is to be carried out again, the protective layer, each functional layer, and the waterproof layer outside the waterproof structure need to be removed, and then external waterproofing construction is carried out again, and then the protective layer and other functional layers outside the waterproof layer are constructed. The construction difficulty is large and this conventional treatment method is time-consuming, laborious, and costly, which is obviously not worth the candle. At this time, only internal waterproofing can be used for waterproofing, that is, back surface waterproofing. Unlike external waterproofing materials, once the internal waterproofing materials are damaged, there is still the concrete structure layer as a buffer; once the internal waterproofing materials are damaged, the indoor decoration layer and the indoor structure may be completely damaged, and even the indoor space will be affected by water leakage. Therefore, the reliability of the internal back surface waterproofing materials must be ensured to be able to completely and reliably play the role of back surface waterproofing, so as to withstand the seepage pressure.

[0003] For back surface waterproofing, since the direction of water coming is from inside the concrete, there is no structural layer as a support when under seepage pressure, and the anti-seepage depends entirely on the waterproof layer. Therefore, very high performance requirements are imposed on the waterproof layer. Otherwise, it is very easy to be damaged by seepage pressure. Relying solely on a coating film with a thickness of dozens or hundreds of microns for back surface waterproofing requires extremely high mechanical properties of the material, requiring the coating to have very high bulk strength and base surface adhesion strength. Otherwise, it is very easy to be damaged by the osmotic water pressure, resulting in coating failure; and a single coating film is extremely easy to be damaged and peeled off due to interfacial stress concentration. Existing coating products cannot meet the requirements of back surface waterproofing.

[0004] Therefore, in order to meet the requirements of back surface waterproofing, a new back surface waterproof coating is proposed. Summary of the Invention

[0005] The object of the present invention is to provide an internal and external combined three-dimensional back surface waterproof coating and a preparation method thereof, which have excellent waterproof performance and solve the problem that existing coating products cannot meet the requirements of back surface waterproofing.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] In the first aspect, the present invention provides a three-dimensional back-water waterproof coating that combines inside and outside, which is composed of component A, component B and component C, and the weight ratio of component A, component B and component C is 100 parts: 5-100 parts: 0-50 parts; wherein, by weight percentage, component A is composed of 35%-92% of base resin, 5%-55% of three-dimensional substrate penetration liquid, 5%-55% of three-dimensional substrate penetration matching liquid, 0.01%-1% of three-dimensional substrate penetration regulator and 5%-35% of performance enhancement liquid, component B is composed of 30%-98% of high-strength cross-linking curing agent, 10%-75% of high-toughness cross-linking curing agent, and 1%-45% of cross-linking curing accelerator; component C is a special environmental reaction enhancer, and the special environmental reaction enhancer is selected from any one of thiol compounds and ketimine.

[0008] The back-water surface waterproof coating provided by the present invention has excellent waterproof performance:

[0009] On the one hand, the coating formed by the back-water surface waterproof coating of the present invention on the concrete surface has high strength and certain flexibility, and its adhesion on the dry and wet concrete base surfaces is also extremely high. Therefore, its coating performance gives it excellent anti-seepage pressure and achieves the effect of back-water surface waterproofing.

[0010] On the other hand, the back-water surface waterproof coating of the present invention has good affinity with concrete material. After being applied, under the action of interface affinity and capillary tension, it can penetrate into the concrete substrate by itself by more than 1.5 mm, and after entering the concrete, it undergoes a cross-linking and curing reaction to form a dense and hard three-dimensional network consolidation body. In this way, it not only fills the pores inside the dense concrete to make it denser and closes the moisture channels on the back-water surface, but also the three-dimensional network consolidation body has high mechanical strength, which can improve the strength of the loose concrete structure and prevent the seepage pressure from destroying the concrete structure; in addition, a multi-phase bite interface with a close combination of inorganic and organic is formed, which can greatly disperse the interface stress in the concrete seepage channel and prevent the coating from being damaged; therefore, it can enhance the thickness of the effective waterproof layer of concrete, disperse the interface stress, and in-situ strengthen the defective concrete structure, which can greatly improve the anti-seepage pressure and achieve an excellent back-water surface waterproofing effect.

[0011] Specifically, the matrix resin includes at least one of glycidyl ether epoxy resin, glycidyl ester epoxy resin, and glycidyl amine epoxy resin.

[0012] Optionally, the glycidyl ether epoxy resin includes any one of bisphenol F epoxy resin, bisphenol AD ​​epoxy resin, hydrogenated bisphenol A epoxy resin, fluorinated epoxy resin, and bisphenol A epoxy resin, or a combination of two or more thereof.

[0013] Optionally, the glycidyl ester type epoxy resin includes any one or a combination of two or more of diglycidyl phthalate, diglycidyl tetrahydrophthalate, diglycidyl hexahydrophthalate, and diglycidyl 1,2 - epoxycyclohexane - 4,5 - dicarboxylate.

[0014] Optionally, the glycidyl amine type epoxy resin includes any one or a combination of two of diaminodiphenylmethane epoxy resin and p - aminophenol epoxy resin.

[0015] Specifically, the three - dimensional substrate penetration regulator includes at least one of aluminate coupling agent, titanate coupling agent, silane coupling agent, and phosphate ester coupling agent.

[0016] Optionally, the aluminate coupling agent includes any one or a combination of two of DL - 411 coupling agent and DL - 412 coupling agent.

[0017] Optionally, the titanate coupling agent includes any one or a combination of two or more of tetraisopropyl bis(dioctylphosphite acyloxy) titanate, isopropyl tris(dioctylpyrophosphate acyloxy) titanate, isopropyl trioleate acyloxy titanate, bis(dioctyloxy pyrophosphate) ethylene titanate, isopropyl dioleate acyloxy(dioctylphosphate acyloxy) titanate, bis(dioctylpyrophosphate acyloxy) oxyacetate titanate, bis(dioctylpyrophosphate acyloxy) oxyacetate titanate, tetraoctyloxytitanate, and tetraisopropyl titanate.

[0018] Optionally, the silane coupling agent includes any one or a combination of two or more of octyltriethoxysilane, octyltrimethoxysilane, vinyltris(β - methoxyethoxy) silane, γ - methacryloxypropyltrimethoxysilane, γ - glycidoxypropyltrimethoxysilane, cetyltrimethoxysilane, dimethyldimethoxysilane, and methyltrimethoxysilane.

[0019] Specifically, the three - dimensional substrate penetration liquid includes at least one of acetophenone, acetylacetone, acetone, methyl ethyl ketone, carvone, muscone, methyl isobutyl ketone, 3 - undecanone, 4 - undecanone, 5 - undecanone, 2 - dodecanone, 3 - dodecanone, 5 - dodecanone, 2 - nonanone, 3 - nonanone, 4 - nonanone, 5 - nonanone, 2 - octanone, 3 - octanone, 4 - octanone, cycloheptanone, 2 - heptanone, 3 - heptanone, 4 - heptanone, phenylheptanone, 2 - hexanone, 3 - hexanone, phenylhexanone, cyclohexanone, 2 - pentanone, 3 - pentanone, cyclopentanone, and phenylpentanone.

[0020] Specifically, the three - dimensional substrate penetration mixture liquid includes at least one of n - hexanal, n - hexanol, n - heptanal, n - heptanol, n - octanal, n - octanol, benzyl alcohol, benzaldehyde, 2 - hydroxymethylfuran, 2 - hydroxyfurfural, furfural, phenylacetaldehyde, phenylethyl alcohol, cinnamaldehyde, citral, and phenylpropanol.

[0021] Specifically, the performance enhancer includes at least one of ethylene glycol diglycidyl ether, glycerol epoxy, neopentyl glycol diglycidyl ether, butanediol diglycidyl ether, resorcinol diglycidyl ether, allyl glycidyl ether, butyl glycidyl ether, phenyl glycidyl ether, cresol glycidyl ether, dibromophenyl glycidyl ether, glycidyl methacrylate, 2-ethylhexyl glycidyl ether, p-tert-butylphenyl glycidyl ether.

[0022] Specifically, the high-strength crosslinking curing agent includes at least one of aliphatic amine compounds, modified amine compounds, alicyclic amine compounds, and aromatic amine compounds.

[0023] Optionally, the aliphatic amine compound includes any one or a combination of two or more of diethylenetriamine (DETA), triethylenetetramine (TETA), tetraethylenepentamine (TEPA), pentaethylenehexamine (PEHA), diethylaminopropylamine, hexamethylenediamine, and aminoethyl ethanolamine.

[0024] Optionally, the modified amine compound includes any one or a combination of two or more of T31 curing agent, 593 curing agent, 594 curing agent, 810 curing agent, 910 curing agent, 113 curing agent, and 133 curing agent.

[0025] Optionally, the alicyclic amine compound includes any one or a combination of two or more of isophorone diamine, menthanediamine, bis(4-amino-3-methylcyclohexyl)methane, bis(4-aminocyclohexyl)methane, piperazine, N-aminoethylpiperazine, and N-hydroxyethylpiperazine.

[0026] Optionally, the aromatic amine compound includes any one or a combination of two or more of 4,4'-diaminodiphenylmethane (DDM), 4,4'-diaminodiphenyl sulfone (DDS), m-xylylenediamine, and m-phenylenediamine.

[0027] Specifically, the high-toughness crosslinking curing agent includes at least one of polyamide compounds, polyetheramine compounds, and polythiirane spirodiamine.

[0028] Optionally, the polyamide compound includes any one or a combination of two or more of 650 curing agent and 651 curing agent.

[0029] Optionally, the polyetheramine compound includes any one or a combination of two or more of D230 curing agent, D400 curing agent, and D2000 curing agent.

[0030] Specifically, the crosslinking curing accelerator includes at least one of tertiary amine compounds, imidazole compounds, and triphenylphosphine.

[0031] Optionally, the tertiary amine compound includes any one or a combination of two or more of 2,4,6-tris(dimethylaminomethyl)phenol, tris(2-ethylhexanoate) of 2,4,6-tris(dimethylaminomethyl)phenol, trioleate of 2,4,6-tris(dimethylaminomethyl)phenol, benzyldimethylamine, o-hydroxybenzyldimethylamine, and triethanolamine.

[0032] Optionally, the imidazole compound includes any one or a combination of two or more of 1-benzyl-2-ethylimidazole, 1-aminoethyl-2-methylimidazole, 2-methylimidazole, and 2-ethyl-4-methylimidazole.

[0033] Specifically, the mercapto compound includes any one or a combination of two or more of 2,3-dithio(2-mercapto)-1-propanethiol, pentaerythritol tetra(3-mercaptopropionate), trimethylolpropane tris(3-mercaptopropionate), QE340 polythiol curing agent, and GPM888 polythiol curing agent.

[0034] Specifically, the ketimine includes any one or a combination of two or more of bis-N,N'-(methyl-butylmethylene)-diethylenetriamine, KT-22 ketimine curing agent, and DA-306 ketimine curing agent.

[0035] In a second aspect, the present invention also provides a method for preparing the above-mentioned internal and external combined three-dimensional back surface waterproof coating, including the following steps:

[0036] Step S1: First, stir the matrix resin and the three-dimensional substrate penetrant liquid evenly, then add the three-dimensional substrate penetration compound liquid and the performance enhancing liquid while stirring, and then add the three-dimensional substrate penetration regulator. After stirring evenly, discharge the material to obtain Component A;

[0037] Step S2: First, stir the high-strength crosslinking curing agent and the high-toughness crosslinking curing agent evenly, then add the crosslinking curing accelerator while stirring. After stirring evenly, discharge the material to obtain Component B;

[0038] Step S3: Directly weigh the raw materials of Component C according to the formula amount for packaging to obtain Component C;

[0039] Step S4: During on-site construction, first add Component A according to the ratio, then add Component B and Component C while stirring. After stirring evenly, the back surface waterproof coating is obtained.

[0040] Compared with the prior art, the present invention provides an internal and external combined three-dimensional back surface waterproof coating and a preparation method thereof, having the following beneficial effects:

[0041] The back surface waterproof coating provided by the present invention has excellent waterproof performance. The coating film formed on the concrete surface has excellent adhesion strength to dry and wet concrete bases and excellent impermeability pressure, and can effectively resist the water pressure permeating from the water-facing surface of the concrete into the concrete, achieving the effect of back surface waterproofing.

[0042] After the back surface waterproof coating of the present invention is applied, under the action of interfacial affinity and capillary tension, it can penetrate into the concrete substrate by more than 1.5 mm by itself, and after entering the concrete, it undergoes a cross-linking and curing reaction to form a dense and hard three-dimensional network consolidation body, thereby filling the pores inside the concrete densely, filling all the micropores on the surface layer of the concrete to lose the water seepage channels, that is, equivalent to changing the back surface waterproof structure from a single coating protection of "micrometer-level impermeable waterproof coating" to a combination of "millimeter-level concrete + inorganic-organic composite reinforced three-dimensional structure of coating" + "micrometer-level impermeable waterproof coating", which can greatly increase the thickness of the effective impermeable waterproof layer of the concrete. At the same time, due to the extremely high strength of the material body and adhesion strength, the mechanical properties of the formed reinforced three-dimensional structure and impermeable waterproof coating are very excellent, and the impermeability pressure is increased again.

[0043] In addition, for special construction environments, such as low temperature below 5°C or construction environments with open water surfaces, the addition of component C can enable construction and use in these special environments and overcome limitations. Specific embodiments

[0044] The technical solutions of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] In the examples and comparative examples, unless otherwise specified, the experimental methods used are all conventional methods, and the materials, reagents, etc. used, unless otherwise specified, can be obtained from commercial channels.

[0046] The present invention will be further described in detail below through detailed examples.

[0047] Example 1

[0048] This example provides an internal and external combined three-dimensional back surface waterproof coating, which is composed of component A and component B, and the weight ratio of component A to component B is 100 parts: 25 parts.

[0049] Component A is composed of the following raw materials by weight percentage:

[0050] Matrix resin (bisphenol F type epoxy resin): accounting for 52.9%,

[0051] Stereo-substrate penetrant liquid (3-hexanone): accounting for 27%,

[0052] Stereo-substrate penetration compound liquid (phenethyl alcohol): accounting for 15%,

[0053] Stereo-substrate penetration regulator (isopropyltrioleoyltitanate): accounting for 0.1%,

[0054] Performance enhancer liquid (butanediol diglycidyl ether): accounting for 5%.

[0055] Component B is composed of raw materials in the following weight percentages:

[0056] High-strength crosslinking curing agent (modified amine compound T31 curing agent): accounting for 60%,

[0057] High-toughness crosslinking curing agent (polyetheramine compound D400 curing agent): accounting for 30%,

[0058] Crosslinking curing accelerator [2,4,6-tris(dimethylaminomethyl)phenol]: accounting for 10%.

[0059] The preparation method of the back surface waterproof coating in this embodiment is as follows:

[0060] Step S1: In a special stirring kettle for Component A, add the matrix resin and the stereo-substrate penetrant liquid in sequence according to the formula amount, and stir at a speed of 600 r / min for 10 minutes; then add the stereo-substrate penetration compound liquid and the performance enhancer liquid while stirring, and stir at a speed of 600 r / min for 30 minutes; then add the stereo-substrate penetration regulator, and stir at a speed of 600 r / min for 20 minutes, and discharge to obtain Component A;

[0061] Step S2: In a special stirring kettle for Component B, add the high-strength crosslinking curing agent and the high-toughness crosslinking curing agent in sequence according to the formula amount, and stir at a speed of 800 r / min for 15 minutes; then add the crosslinking curing accelerator while stirring, and stir at a speed of 800 r / min for 25 minutes, and discharge to obtain Component B;

[0062] Step S3: During on-site construction, first add Component A according to the ratio, and then add Component B while stirring, and stir for 3 min until the material is uniform to obtain the back surface waterproof coating that can be brushed or sprayed.

[0063] Example 2

[0064] This embodiment provides a back surface waterproof coating with an internal and external combined three-dimensional structure, which is composed of Component A and Component B, and the weight ratio of Component A to Component B is 100 parts: 80 parts.

[0065] Component A is composed of raw materials in the following weight percentages:

[0066] Matrix resin (bisphenol A epoxy resin): 40%,

[0067] Three-dimensional substrate penetrant liquid (cyclopentanone): 15%,

[0068] Three-dimensional substrate penetration compound liquid (phenylacetaldehyde): 15%,

[0069] Three-dimensional substrate penetration regulator (octyltrimethoxysilane): 1%,

[0070] Performance enhancer liquid (allyl glycidyl ether): 29%.

[0071] Component B is composed of raw materials with the following weight percentages:

[0072] High-strength crosslinking curing agent (menthanediamine): 30%,

[0073] High-toughness crosslinking curing agent (polysulfide rubber): 68%,

[0074] Crosslinking curing accelerator (triethanolamine): 2%.

[0075] The preparation method of the water-facing waterproof coating in this example is the same as that in Example 1, so it will not be elaborated here.

[0076] Example 3

[0077] This example provides a three-dimensional water-facing waterproof coating that combines internal and external surfaces, which is composed of Component A and Component B. The weight ratio of Component A to Component B is 100 parts: 12 parts.

[0078] Component A is composed of raw materials with the following weight percentages:

[0079] Matrix resin (bisphenol AD epoxy resin): 47.5%,

[0080] Three-dimensional substrate penetrant liquid (3-heptanone): 8%,

[0081] Three-dimensional substrate penetration compound liquid (furfural): 39%,

[0082] Three-dimensional substrate penetration regulator (DL-411 coupling agent): 0.06%,

[0083] Performance enhancer liquid (ethylene glycol diglycidyl ether): 5.44%.

[0084] Component B is composed of raw materials with the following weight percentages:

[0085] High-strength crosslinking curing agent (DETA): 45%,

[0086] High toughness crosslinking curing agent (polyamide compound 650 curing agent): 19%,

[0087] Crosslinking curing accelerator [2,4,6-tris(dimethylaminomethyl)phenol trioleate]: 36%.

[0088] The preparation method of the back surface waterproof coating in this example is the same as that in Example 1, so it will not be elaborated here.

[0089] Example 4

[0090] This example provides an internal and external combined three-dimensional back surface waterproof coating, which consists of component A and component B. The weight ratio of component A to component B is 100 parts: 45 parts.

[0091] Component A is composed of the following raw materials by weight percentage:

[0092] Matrix resin (diaminodiphenylmethane epoxy resin): 76%,

[0093] Three-dimensional substrate penetrant liquid (methyl ethyl ketone): 7%,

[0094] Three-dimensional substrate penetration compound liquid (n-octanol): 5%,

[0095] Three-dimensional substrate penetration regulator (γ-methacryloxypropyltrimethoxysilane): 0.55%,

[0096] Performance enhancing liquid (resorcinol diglycidyl ether): 11.45%.

[0097] Component B is composed of the following raw materials by weight percentage:

[0098] High-strength crosslinking curing agent (aromatic amine compound DDS): 82%,

[0099] High toughness crosslinking curing agent (spirodiamine): 11%,

[0100] Crosslinking curing accelerator (1-benzyl-2-ethylimidazole): 7%.

[0101] The preparation method of the back surface waterproof coating in this example is the same as that in Example 1, so it will not be elaborated here.

[0102] Example 5

[0103] This example provides an internal and external combined three-dimensional back surface waterproof coating, which consists of component A and component B. The weight ratio of component A to component B is 100 parts: 33 parts.

[0104] Component A is composed of the following raw materials by weight percentage:

[0105] Matrix resin (bisphenol A epoxy resin): 45%,

[0106] Stereo substrate penetrant liquid (acetophenone): 32%,

[0107] Stereo substrate penetration compound liquid (2-hydroxyfurfural): 12%,

[0108] Stereo substrate penetration regulator (hexadecyltrimethoxysilane): 0.25%,

[0109] Performance enhancer liquid (butyl glycidyl ether): 10.75%.

[0110] Component B is composed of raw materials in the following weight percentages:

[0111] High-strength crosslinking curing agent (hexamethylenediamine): 37%,

[0112] High-toughness crosslinking curing agent (polyetheramine compound D230 curing agent): 48%,

[0113] Crosslinking curing accelerator (benzyldimethylamine): 15%.

[0114] The preparation method of the back surface waterproof coating in this example is the same as that in Example 1, so it will not be elaborated here.

[0115] Example 6

[0116] This example provides a back surface waterproof coating with an internal and external combined three-dimensional structure, which is composed of Component A, Component B and Component C. The weight ratio of Component A, Component B and Component C is 100 parts: 50 parts: 20 parts.

[0117] Component A is composed of raw materials in the following weight percentages:

[0118] Matrix resin (hydrogenated bisphenol A epoxy resin): 65%,

[0119] Stereo substrate penetrant liquid (2-octanone): 7%,

[0120] Stereo substrate penetration compound liquid (n-hexanol): 15%,

[0121] Stereo substrate penetration regulator [bis(dioctylpyrophosphoryloxy)oxyacetate titanate]: 0.5%,

[0122] Performance enhancer liquid (phenyl glycidyl ether): 12.5%.

[0123] Component B is composed of raw materials in the following weight percentages:

[0124] High-strength crosslinking curing agent (aromatic amine compound m-phenylenediamine): 70%,

[0125] High-toughness crosslinking curing agent (polyamide compound 651 curing agent): 25%,

[0126] Crosslinking curing accelerator (2-methylimidazole): 5%.

[0127] Component C is trimethylolpropane tris(3-mercaptopropionate).

[0128] The preparation method of the waterproof coating for the back surface of this example is as follows:

[0129] Step S1: In the special stirring kettle for Component A, add the matrix resin and the three-dimensional substrate penetrant liquid in sequence according to the formula amount, and stir at a speed of 600 r / min for 10 minutes; then add the three-dimensional substrate penetration compound liquid and the performance enhancer while stirring, and stir at a speed of 600 r / min for 30 minutes; then add the three-dimensional substrate penetration regulator and stir at a speed of 600 r / min for 20 minutes, and discharge to obtain Component A;

[0130] Step S2: In the special stirring kettle for Component B, add the high-strength crosslinking curing agent and the high-toughness crosslinking curing agent in sequence according to the formula amount, and stir at a speed of 800 r / min for 15 minutes; then add the crosslinking curing accelerator while stirring, and stir at a speed of 800 r / min for 25 minutes, and discharge to obtain Component B;

[0131] Step S3: Directly weigh the raw materials of Component C according to the formula amount for packaging to obtain Component C;

[0132] Step S4: During on-site construction, first add Component A according to the ratio, and then add Component B and Component C while stirring, and stir for 3 min until the material is uniform to obtain the waterproof coating for the back surface that can be brushed or sprayed.

[0133] Comparative Example 1

[0134] This comparative example provides a waterproof coating for the back surface, which consists of Component A and Component B, and the weight ratio of Component A to Component B is 100 parts: 33 parts.

[0135] Component A is composed of the following raw materials by weight percentage:

[0136] Matrix resin (bisphenol A epoxy resin): 45%,

[0137] Performance enhancer (butyl glycidyl ether): 55%.

[0138] Component B is composed of the following raw materials by weight percentage:

[0139] High-strength crosslinking curing agent (hexamethylenediamine): 37%,

[0140] High-toughness crosslinking curing agent (polyetheramine compound D230 curing agent): accounting for 48%,

[0141] Crosslinking curing accelerator (benzyldimethylamine): accounting for 15%.

[0142] The preparation method of the water-facing side waterproof coating of this comparative example is as follows:

[0143] Step S1: In the special stirring kettle for component A, add the matrix resin in sequence according to the formula amount, and then add the performance enhancing liquid while stirring, stir at a speed of 600 r / min for 30 minutes, and discharge to obtain component A;

[0144] Step S2: In the special stirring kettle for component B, add the high-strength crosslinking curing agent and the high-toughness crosslinking curing agent in sequence according to the formula amount, and stir at a speed of 800 r / min for 15 minutes; then add the crosslinking curing accelerator while stirring, and stir at a speed of 800 r / min for 25 minutes, and discharge to obtain component B;

[0145] Step S3: During on-site construction, first add component A according to the ratio, and then add component B while stirring, and stir for 3 min until the material is uniform to obtain the water-facing side waterproof coating that can be brushed or sprayed.

[0146] Comparative Example 2

[0147] This comparative example provides a water-facing side waterproof coating, which is composed of component A and component B, and the weight ratio of component A to component B is 100 parts: 33 parts.

[0148] Component A is composed of the following raw materials by weight percentage:

[0149] Matrix resin (bisphenol A epoxy resin): accounting for 45%,

[0150] Stereo substrate penetrant liquid (acetophenone): accounting for 32%,

[0151] Stereo substrate penetration compound liquid (2-hydroxyfurfural): accounting for 12%,

[0152] Stereo substrate penetration regulator (cetyltrimethoxysilane): accounting for 0.25%,

[0153] Performance enhancing liquid (butyl glycidyl ether): accounting for 10.75%.

[0154] Component B is composed of the following raw materials by weight percentage:

[0155] High-strength crosslinking curing agent (hexamethylenediamine): accounting for 100%.

[0156] The preparation method of the water-facing side waterproof coating of this comparative example is as follows:

[0157] Step S1: In a dedicated stirring kettle for Component A, add the matrix resin and the three-dimensional substrate penetrant liquid in accordance with the formula amounts in sequence, and stir at a speed of 600 r / min for 10 minutes; then add the three-dimensional substrate penetration compound liquid and the performance enhancer while stirring, and stir at a speed of 600 r / min for 30 minutes; subsequently, add the three-dimensional substrate penetration regulator, and stir at a speed of 600 r / min for 20 minutes, and discharge to obtain Component A;

[0158] Step S2: Directly weigh the raw material (hexamethylenediamine) of Component B according to the formula amount for packaging to obtain Component B;

[0159] Step S3: During on-site construction, first add Component A according to the ratio, and then add Component B while stirring, and stir for 3 minutes until the material is uniform to obtain a water-facing waterproof coating that can be brushed or sprayed.

[0160] Comparative Example 3

[0161] This comparative example provides a water-facing waterproof coating, which consists of Component A and Component B, and the weight ratio of Component A to Component B is 100 parts: 50 parts.

[0162] Component A is composed of the following raw materials by weight percentage:

[0163] Matrix resin (hydrogenated bisphenol A epoxy resin): accounting for 65%,

[0164] Three-dimensional substrate penetrant liquid (2-octanone): accounting for 7%,

[0165] Three-dimensional substrate penetration compound liquid (n-hexanol): accounting for 15%,

[0166] Three-dimensional substrate penetration regulator [titanium bis(dioctylpyrophosphate)oxyacetate]: accounting for 0.5%,

[0167] Performance enhancer (phenyl glycidyl ether): 12.5%.

[0168] Component B is composed of the following raw materials by weight percentage:

[0169] High-strength crosslinking curing agent (m-phenylenediamine, an aromatic amine compound): accounting for 70%,

[0170] High-toughness crosslinking curing agent (651 curing agent, a polyamide compound): accounting for 25%,

[0171] Crosslinking curing accelerator (2-methylimidazole): accounting for 5%.

[0172] The preparation method of the water-facing waterproof coating in this comparative example is the same as that in Example 1, so it will not be elaborated here.

[0173] The back surface waterproof coatings prepared in Examples 1-6 and Comparative Examples 1-3 were tested. The test items included adhesion strength (dry base surface), adhesion strength (wet base surface), anti-seepage pressure of the coating, and workability at <5°C. The test results are shown in Tables 1 and 2 below.

[0174] Table 1 Performance comparison between Examples 1-5 and Comparative Examples 1-2

[0175] Test content Bonding strength (dry base surface) Bonding strength (wet base surface) Coating impermeability pressure Standard requirements ≥3.0MPa ≥2.5MPa ≥1.0MPa Example 1 5.2MPa 3.7MPa 1.3MPa Example 2 5.0MPa 3.1MPa 1.2MPa Example 3 6.5MPa 4.0MPa 1.5MPa Example 4 4.7MPa 3.2MPa 1.1MPa Example 5 4.9MPa 3.5MPa 1.2MPa Comparative example 1 1.6MPa 1.0MPa 0.4MPa Comparative example 2 2.7MPa 2.1MPa 0.7MPa

[0176] Table 2 Performance comparison between Example 6 and Comparative Example 3

[0177]

[0178] As can be seen from the data in Table 1, Examples 1-5 can well meet the standard requirements. However, in Comparative Examples 1 and 2, due to the lack of some key component materials, the adhesion strength (dry base surface), adhesion strength (wet base surface), and anti-seepage pressure of the coating are all lower than the standard requirements. It can be seen that by compounding a three-dimensional substrate penetrant liquid, a three-dimensional substrate penetration compound liquid, a three-dimensional substrate penetration regulator, a performance enhancer liquid, a high-strength cross-linking curing agent, a high-toughness cross-linking curing agent, and a cross-linking curing accelerator into the matrix resin in the present invention, the formed coating film has excellent adhesion strength to dry and wet concrete base surfaces and excellent anti-seepage pressure, thus having excellent waterproof performance.

[0179] As can be seen from the data in Table 2, Example 6 can be constructed in a low-temperature environment below 5°C by adding a certain proportion of Component C. It can be seen that by further adding an appropriate amount of Component C in the present invention, the product can be used for construction in special construction environments such as low-temperature environments below 5°C, well overcoming the limitations.

[0180] The above examples only exemplarily illustrate the concept and technical solutions of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above examples without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

[0181] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A three-dimensional backwater waterproof coating combining internal and external parts, characterized in that, It is composed of component A, component B and component C, and the weight ratio of component A, component B and component C is 100 parts: 5 - 100 parts: 0 - 50 parts; Among them, by weight percentage, component A is composed of 35% - 92% of matrix resin, 5% - 55% of three-dimensional substrate penetrant, 5% - 55% of three-dimensional substrate penetration compound solution, 0.01% - 1% of three-dimensional substrate penetration regulator and 5% - 35% of performance enhancer solution, and component B is composed of 30% - 98% of high-strength crosslinking curing agent, 10% - 75% of high-toughness crosslinking curing agent, and 1% - 45% of crosslinking curing accelerator composition; Component C is a special environment reaction enhancer, and the special environment reaction enhancer is selected from any one of mercapto compounds and ketimines.

2. The internal and external combined three-dimensional backwater waterproof coating according to claim 1, characterized in that, The matrix resin includes at least one of glycidyl ether type epoxy resin, glycidyl ester type epoxy resin, and glycidyl amine type epoxy resin.

3. The internal and external combined three-dimensional backwater waterproof coating according to claim 2, wherein The glycidyl ether type epoxy resin includes any one or a combination of two or more of bisphenol F type epoxy resin, bisphenol AD type epoxy resin, hydrogenated bisphenol A type epoxy resin, fluorinated epoxy resin, and bisphenol A type epoxy resin; The glycidyl ester type epoxy resin includes any one or a combination of two or more of diglycidyl phthalate, diglycidyl tetrahydrophthalate, diglycidyl hexahydrophthalate, and diglycidyl 1,2 - epoxycyclohexane - 4,5 - dicarboxylate; The glycidyl amine type epoxy resin includes any one or a combination of two of diaminodiphenylmethane epoxy resin and p - aminophenol epoxy resin.

4. The internal and external combined three-dimensional back surface waterproof coating according to claim 1, wherein The three-dimensional substrate penetration regulator includes at least one of aluminate coupling agent, titanate coupling agent, silane coupling agent, and phosphate coupling agent.

5. The waterproof coating for the back water surface with an internal and external combined three-dimensional structure according to claim 4, wherein The aluminate coupling agent includes any one or a combination of two of DL - 411 coupling agent and DL - 412 coupling agent; The titanate coupling agent includes any one or a combination of two or more of tetraisopropyl bis(dioctylphosphite) titanate, isopropyl tri(dioctylpyrophosphate) titanate, isopropyl trioleate titanate, bis(dioctyloxypyrophosphate) ethylene titanate, isopropyl dioleate (dioctylphosphate) titanate, bis(dioctylpyrophosphate) oxyacetate titanate, bis(dioctylpyrophosphate) oxyacetate titanate, tetraoctyloxytitanate, and tetraisopropyl titanate; The silane coupling agent includes any one or a combination of two or more of octyltriethoxysilane, octyltrimethoxysilane, vinyltris(β - methoxyethoxy)silane, γ - methacryloxypropyltrimethoxysilane, γ - glycidoxypropyltrimethoxysilane, hexadecyltrimethoxysilane, dimethyldimethoxysilane, and methyltrimethoxysilane.

6. The internal and external combined three-dimensional backwater waterproof coating according to claim 1, wherein, The three-dimensional substrate penetrant includes at least one of acetophenone, acetylacetone, acetone, methyl ethyl ketone, carvone, muscone, methyl isobutyl ketone, 3-undecanone, 4-undecanone, 5-undecanone, 2-dodecanone, 3-dodecanone, 5-dodecanone, 2-nonanone, 3-nonanone, 4-nonanone, 5-nonanone, 2-octanone, 3-octanone, 4-octanone, cycloheptanone, 2-heptanone, 3-heptanone, 4-heptanone, phenylheptanone, 2-hexanone, 3-hexanone, phenylhexanone, cyclohexanone, 2-pentanone, 3-pentanone, cyclopentanone, phenylpentanone; The three-dimensional substrate penetration compounding liquid includes at least one of n-hexanal, n-hexanol, n-heptanal, n-heptanol, n-octanal, n-octanol, benzyl alcohol, benzaldehyde, 2-hydroxymethylfuran, 2-hydroxyfurfural, furfural, phenylacetaldehyde, phenylethyl alcohol, cinnamaldehyde, citral, phenylpropanol; The performance enhancer includes at least one of ethylene glycol diglycidyl ether, glycerol epoxy, neopentyl glycol diglycidyl ether, butanediol diglycidyl ether, resorcinol diglycidyl ether, allyl glycidyl ether, butyl glycidyl ether, phenyl glycidyl ether, cresol glycidyl ether, dibromophenyl glycidyl ether, glycidyl methacrylate, 2-ethylhexyl glycidyl ether, p-tert-butylphenyl glycidyl ether; 7. The back surface waterproof coating with an internal and external combined three-dimensional structure according to claim 1, wherein The high-strength crosslinking curing agent includes at least one of aliphatic amine compounds, modified amine compounds, alicyclic amine compounds, aromatic amine compounds; The high-toughness crosslinking curing agent includes at least one of polyamide compounds, polyetheramine compounds, polythiirane spiro diamine; The crosslinking curing accelerator includes at least one of tertiary amine compounds, imidazole compounds, triphenylphosphine; 8. The internal and external combined three-dimensional backwater waterproof coating according to claim 7, characterized in that, The aliphatic amine compounds include any one or a combination of two or more of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, diethylaminopropylamine, hexamethylenediamine, aminoethylethanolamine; The modified amine compounds include any one or a combination of two or more of T31 curing agent, 593 curing agent, 594 curing agent, 810 curing agent, 910 curing agent, 113 curing agent, 133 curing agent; The alicyclic amine compounds include any one or a combination of two or more of isophorone diamine, menthanediamine, bis(4-amino-3-methylcyclohexyl)methane, bis(4-aminocyclohexyl)methane, piperazine, N-aminoethylpiperazine, N-hydroxyethylpiperazine; The aromatic amine compounds include any one or a combination of two or more of 4,4'-diaminodiphenylmethane, 4,4'-diaminodiphenyl sulfone, m-xylylenediamine, m-phenylenediamine; The polyamide compounds include any one or a combination of two or more of 650 curing agent, 651 curing agent; The polyetheramine compounds include any one or a combination of two or more of D230 curing agent, D400 curing agent, D2000 curing agent; The tertiary amine compounds include any one or a combination of two or more of 2,4,6-tris(dimethylaminomethyl)phenol, tris(2-ethylhexanoate) of 2,4,6-tris(dimethylaminomethyl)phenol, trioleate of 2,4,6-tris(dimethylaminomethyl)phenol, benzyldimethylamine, o-hydroxybenzyldimethylamine, and triethanolamine; The imidazole compounds include any one or a combination of two or more of 1-benzyl-2-ethylimidazole, 1-aminoethyl-2-methylimidazole, 2-methylimidazole, and 2-ethyl-4-methylimidazole.

9. The internal and external combined three-dimensional backwater waterproof coating according to claim 1, wherein The mercapto compounds include any one or a combination of two or more of 2,3-dithio(2-mercapto)-1-propanethiol, pentaerythritol tetra(3-mercaptopropionate), trimethylolpropane tris(3-mercaptopropionate), QE340 polythiol curing agent, and GPM888 polythiol curing agent; The ketimine includes any one or a combination of two or more of bis-N,N'-(methyl-butylmethylene)-diethylenetriamine, KT-22 ketimine curing agent, and DA-306 ketimine curing agent.

10. A method for preparing the internal and external combined three-dimensional water-proof coating for the back water surface according to any one of claims 1 to 9, characterized in that, It includes the following steps: Step S1: First, stir the matrix resin and the three-dimensional substrate penetrant liquid evenly, then add the three-dimensional substrate penetration compound liquid and the performance enhancing liquid while stirring, and then add the three-dimensional substrate penetration regulator. After stirring evenly, discharge to obtain Component A; Step S2: First, stir the high-strength crosslinking curing agent and the high-toughness crosslinking curing agent evenly, then add the crosslinking curing accelerator while stirring, and after stirring evenly, discharge to obtain Component B; Step S3: Directly weigh the raw materials of Component C according to the formula amount for packaging to obtain Component C; Step S4: During on-site construction, first add Component A according to the ratio, then add Component B and Component C while stirring, and stir evenly to obtain the back surface waterproof coating.

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