CN105199584A - Composite polyurethane waterproof coating - Google Patents
Composite polyurethane waterproof coating Download PDFInfo
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- CN105199584A CN105199584A CN201510725485.5A CN201510725485A CN105199584A CN 105199584 A CN105199584 A CN 105199584A CN 201510725485 A CN201510725485 A CN 201510725485A CN 105199584 A CN105199584 A CN 105199584A
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Abstract
The invention discloses a composite polyurethane waterproof coating. The waterproof coating is prepared from components in parts by weight as follows: 30-50 parts of a waterborne polyurethane modified compound, 4-8 parts of methyl sodium silicate, 4-6 parts of silicon dioxide, 1-3 parts of glass flakes, 0.04-0.08 parts of glass fibers, 1-3 parts of propylene carbonate, 1-3 parts of dimethythiotoluene diamine, 0.2-0.4 parts of polyvinyl alcohol, 0.1-0.3 parts of triethanolamine, 0.02-0.04 parts of calcium lignosulphonate, 0.2-0.6 parts of polyethylene glycol, 1-2 parts of propylene glycol, 1-3 parts of diethanol amine, 16-20 parts of talc, 0.1-0.3 parts of polyether-modified polysiloxane, 2-6 parts of nano-silica and 40-60 parts of water.
Description
Technical field
The present invention relates to a kind of composite polyurethane waterproof paint, belong to concrete construction water-proof material technical field.
Background technology
Although concrete has easy cast, the feature such as shock-resistant, wear-resisting, its elongation strengths is not so desirable.Therefore, it is all generally that binding reinforcement comes together to use, and makes it to become Steel Concrete.Steel Concrete has very strong tensile strength, and this improves a metastable structure for concrete construction.In addition, the calcium hydroxide in concrete can provide an alkaline environment, and can define one deck passivation protection film at rebar surface, makes reinforcing bar relative to more not perishable under neutral and sour environment.Due to these reasons, Steel Concrete has become the preferred forms of building.
Along with social economy and the fast development of Process of Urbanization Construction and significantly improving of people's living standard, people have higher requirement to the quality of Steel Concrete and function, particularly its weather resistance., some unfavorable factor affects the weather resistance of Steel Concrete, as: the factors such as carboniogenesis, acid erosion, steel bar corrosion, freeze-thaw damage.Although the mechanism of action of these unfavorable factors is different and very complicated, their common ground are: all relevant to the complexity that water or gas transmit to inside concrete.Therefore, how reducing water and gas transmits at inside concrete, especially water, is one of key factor improving Steel Concrete weather resistance.
At present, transmit at inside concrete to reduce water, people have employed concrete construction water-proof material (coiled material and coating) and improve concrete water resistance.Coiled material plays certain waterproof effect, but it also exists some problems: during construction to basic unit's water ratio and shape need high; Seam crossing imprecision, easy seepage.In order to overcome the deficiency of coiled material, people find its substitute--coating.This is owing to brushing certain thickness waterproof paint at reinforced concrete surface, can block concrete pore, bottle up the erosion of moisture, thus improve concrete endurance quality.Conventional waterproof paint has epoxy resin, urethane and acrylic resin paint etc.Wherein, polyurethane water-proof paint is a kind of novel high polymer waterproof paint, because it has that good wear resistance, erosion resistance, chemical-resistant, hardness are large, snappiness etc. is excellent physics, chemical property have now been widely used in waterproofing work.But traditional solvent borne polyurethane waterproof paint all with the addition of many organic solvents in the process prepared and construct, this forms very large threat to human health and environment protection.Therefore, people use aqueous polyurethane waterproof paint replace solvents type polyurethane waterproof paint.Aqueous polyurethane waterproof paint can be divided into single component and two-pack again.The Polymer Molecular Weight of monocomponent waterborne polyurethane waterproof paint is comparatively large, and in film process, general generation is cross-linked, and has production simple, the advantage of easy construction, but its subject matter existed is that intensity and toughness are poor.The water-base resin of dual-component aqueous polyurethane waterproof paint by hydroxyl and the solidifying agent containing isocyanate group form, before construction, both are mixed, crosslinking reaction is there is in film process, film performance is good, but during Two-component Waterproof Polyurethane Coating construction, carry out on-the-spot proportioning, mixing, troublesome poeration, simultaneously the quality of workmen and skill level also can cause the difference in quality product.In addition, polyisocyanates free in Two-component Waterproof Polyurethane Coating has strong impulse effect to skin, eyes and respiratory tract, and Long Term Contact can cause the diseases such as chronic bronchitis.Therefore, develop a kind of good water resistance, high tensile, good snappiness, construction is simple and the waterproof paint of health environment-friendly will play very important effect to concrete construction.
In order to solve the problem, people have carried out a lot of research, if China Patent No. is that CN1670096A application for a patent for invention discloses one " monocomponent high elastic aqueous polyurethane/acrylate building water-proof paint ", it is by polyurethane/acrylic ester composite emulsion 30 ~ 90 parts, filling material 5 ~ 45 parts, dispersion agent 0.2 ~ 1.1 part, film coalescence aid 0.6 ~ 1.5 part, flow agent 0.05 ~ 0.35 part, defoamer 0.08 ~ 0.32 part, 0.6 ~ 12 part, softening agent, thickening material 0.01 ~ 1.0 part, pH stablizer 0.01 ~ 5.0 part, ultraviolet absorbers 0.5 ~ 1.0 part, 1 ~ 15 part, water is made.The monocomponent high elastic aqueous polyurethane building water-proof paint of this invention has the advantage such as high tensile, good snappiness.And for example Chinese patent Authorization Notice No. is that the patent of invention of CN1206299C discloses " a kind of nano modification polymer-based carbon roofing waterproof paint and manufacture method thereof ", it is by polymer emulsion 38.9 ~ 65%, inorganic nano-particle 0.1 ~ 5%, sodium-based montmorillonite 1 ~ 6%, filler 30 ~ 60% is made.The coating of this invention had both had excellent mechanical property and water resistance, had again the advantages such as excellent anti-uv-ray, can work-ing life of significant prolongation roof waterproof engineering.
Summary of the invention
Aqueous polyurethane is most important integral part in waterproof paint, the technical problems such as above-described aqueous polyurethane waterproof paint intensity difference, poor toughness, construction requirement are high in order to solve, health environment-friendly, the invention provides a kind of composite polyurethane waterproof paint, described composite polyurethane waterproof paint have employed several resin and carries out the waterborne polyurethane modified composition polymer of composite modified formation to aqueous polyurethane, overcome the defect existing for single aqueous polyurethane water-proof paint, make the over-all properties of waterproof paint more excellent; Also use nano material carries out composite modified to waterborne polyurethane modified polymkeric substance simultaneously, can improve the water resistance, mechanical property, anti-uv-ray etc. of described waterproof paint further.
The present invention for the taked technical scheme that solves the problem is:
A kind of composite polyurethane waterproof paint, be made up of each component of following weight: waterborne polyurethane modified mixture 30 ~ 50 parts, sodium methyl silicate 4 ~ 8 parts, silicon-dioxide 4 ~ 6 parts, glass flake 1 ~ 3 part, 0.04 ~ 0.08 part, glass fibre, propylene carbonate 1 ~ 3 part, dimethythiotoluene diamine 1 ~ 3 part, polyvinyl alcohol 0.2 ~ 0.4 part, trolamine 0.1 ~ 0.3 part, calcium lignin sulphonate 0.02 ~ 0.04 part, polyoxyethylene glycol 0.2 ~ 0.6 part, propylene glycol 1 ~ 2 part, diethanolamine 1 ~ 3 part, talcum powder 16 ~ 20 parts, Siloxane-Oxyalkylene Copolymers 0.1 ~ 0.3 part, nano silicon 2 ~ 6 parts, 40 ~ 60 parts, water.
Described waterborne polyurethane modified mixture is 10 ~ 16 parts of acrylic resin modified aqueous polyurethane mixtures, 10 ~ 16 parts of epoxy resin modified aqueous polyurethane mixtures, and 10 ~ 18 parts of silicone resin modified aqueous polyurethane mixtures are composited.
Preferably, its weight is as follows:
Acrylic resin modified aqueous polyurethane mixture 13 parts, epoxy resin modified aqueous polyurethane mixture 13 parts, silicone resin modified aqueous polyurethane mixture 14 parts, sodium methyl silicate 6 parts, silicon-dioxide 5 parts, glass flake 2 parts, 0.06 part, glass fibre, propylene carbonate 2 parts, dimethythiotoluene diamine 2 parts, polyvinyl alcohol 0.3 part, trolamine 0.2 part, calcium lignin sulphonate 0.03 part, polyoxyethylene glycol 0.4 part, propylene glycol 1.5 parts, diethanolamine 2 parts, talcum powder 18 parts, Siloxane-Oxyalkylene Copolymers 0.2 part, nano silicon 4 parts, 50 parts, water.
Preferably, described epoxy resin is bisphenol A epoxide resin.
Preferably, described silicone resin is polyorganosiloxane resin.
In the present invention, Acrylate Modified Aqueous Polyurethane, makes coating have water-based propionic acid coating and aqueous polyurethane coating advantage concurrently, and have excellent weathering resistance, solid content is high; Epoxy modified aqueous urethane, the chemical-resistant making film have strong sticking power to become reconciled; Silicone resin modified aqueous polyurethane, can improve the water tolerance of coating, sticking power and hardness.
Sodium methyl silicate, can form firmly water-repellent layer, makes coating have good water-proof function.In addition, it in concrete pore, can form waterproof xln, realizes the effect of self-healing hole, blocking duct, waterproof.
Silicon-dioxide and glass flake can be used for the skeleton construction forming film, strengthen the cohesiveness of film and cast concrete base; Glass fibre can strengthen the physical strength of film, improves the performance of coating further; Propylene carbonate, viscosity is low, and consistency is good, plays the effect of softening agent in coating, increases the mobility of coating, improves coating and concrete interaction; Dimethythiotoluene diamine, plays the effect of solidifying agent in coating, increases the solidification amount of coating, improves the performance of coating.
Polyvinyl alcohol plays the effect of thickening material in coating, can improve apparent viscosity and the stability of coating significantly, and give coating with thixotropic property.In addition, in sagging when polyvinyl alcohol also can prevent application, storage process, the sedimentation of color stuffing, improves processing property during coating application, improves the fullness ratio of film.
Trolamine, is a kind of hardening accelerator, can shortens waterproof layer formation time, strengthens early strength, and contributes to effect that coating realizes fast waterproof.
Calcium lignin sulphonate has good wetting and dispersiveness, can improve the workability of waterproof paint, improve the snappiness of film.In addition, when concrete lack of water, can there is self polycondensation crystallization, fill and block concrete hole and space, the self-healing ability of Concrete Structure, improve concrete weather resistance and water resistance in calcium lignin sulphonate.
Polyoxyethylene glycol, is not only a kind of emulsifying agent, or a kind of appearance promoting agent, especially a kind of tranquilizer, can improve the dispersiveness of resin, snappiness, thus improves the water-proof function of coating.
Propylene glycol is a kind of coating film coalescence aid, not only effectively can be lowered into film temperature, but also to improving the mobility of coating, the homogeneity of pigment, stability plays very important effect.
Diethanolamine is a kind of linking agent, can make polymer modification, and improves the performances such as heat-resisting, wear resistance, the mechanical strength of polymkeric substance significantly with providing, for the use range expanding coating lays the foundation.
Talcum powder is a kind of color stuffing, and its main component is the Magnesium Silicate q-agent of sheet structure, can reduce the crack sensitivity of coating, improves overall performance and the weathering resistance of film, also can improve the associativity with substrate.In addition, talcum powder can also improve the viscosity of coating and make it have thixotropy, reduces the Subsidence trend of color stuffing, thus reduces the consumption of thickening material.
Siloxane-Oxyalkylene Copolymers, is a kind of defoamer, can falls the surface tension of coating, prevents from forming foam, thus improves the endurance quality of coating.
Nano-silica filled at coating, reticulated structure can be formed fast, improve the ageing-resistant ability of coating, thus extend the life-span of coating.Nano silicon and waterborne polyurethane modified polymkeric substance carry out composite modified, can improve the water resistance of described waterproof paint, mechanical property, anti-uv-ray etc.
In use, only need direct spraying or brushing on the surface needing waterproof thing, overcoating brush of laying equal stress on is to certain thickness for composite polyurethane waterproof paint of the present invention, and maintenance 3 days or more.
The present invention is a kind of acrylic resin modified aqueous polyurethane mixture, epoxy resin modified aqueous polyurethane mixture and silicone resin modified aqueous polyurethane mixture is base-material, and mixes the composite polyurethane waterproof paint of multiple auxiliary agent, sodium methyl silicate, silicon-dioxide, glass flake and nano silicon composition.The present invention has the following advantages:
First, present invention employs several resin and the waterborne polyurethane modified composition polymer of composite modified formation is carried out to aqueous polyurethane, overcome the defect existing for single aqueous polyurethane water-proof paint, make the over-all properties of waterproof paint more excellent;
Secondly, nano silicon is to waterborne polyurethane modified polymer composite modified, water resistance, mechanical property, anti-uv-ray can not only be improved, but also hardness, Young's modulus, the stain resistant ability of waterproof paint film can be improved, and then improve the using value of waterproof paint;
Again, coating is coated with membranous type waterproof, and sodium methyl silicate is hydrophobic type waterproof, thus form film-hydrophobic type waterproof, greatly improves water resistance and the endurance quality of coating;
Finally, compare double-composition polyurethane waterproof paint, and the present invention adopts formula rationally, and construction is simple, with low cost, and health environment-friendly.
In addition, the present invention also uses the skeleton function of silicon-dioxide and glass flake, makes coating rigid flexible system, forms durable water-proof system, and then realizes the permanent waterproof of coating.
Waterproof paint disclosed in this invention has that intensity is high, good toughness, construction is simple, water resistance is good and health environment-friendly, can be applicable to the waterproof of roofing, vault and toilet etc.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
In use, only need direct spraying or brushing on the surface needing waterproof thing, overcoating brush of laying equal stress on is to 2mm thickness for composite polyurethane waterproof paint of the present invention, and maintenance 3 days.
Embodiment 1
A kind of composite polyurethane waterproof paint, be made up of each component of following weight: acrylic resin modified aqueous polyurethane mixture 13 parts, epoxy resin modified aqueous polyurethane mixture 13 parts, silicone resin modified aqueous polyurethane mixture 14 parts, sodium methyl silicate 6 parts, silicon-dioxide 5 parts, glass flake 2 parts, 0.06 part, glass fibre, propylene carbonate 2 parts, dimethythiotoluene diamine 2 parts, polyvinyl alcohol 0.3 part, trolamine 0.2 part, calcium lignin sulphonate 0.03 part, polyoxyethylene glycol 0.4 part, propylene glycol 1.5 parts, diethanolamine 2 parts, talcum powder 18 parts, Siloxane-Oxyalkylene Copolymers 0.2 part, nano silicon 4 parts, 50 parts, water.
Embodiment 2
A kind of composite polyurethane waterproof paint, be made up of each component of following weight: acrylic resin modified aqueous polyurethane mixture 10 parts, epoxy resin modified aqueous polyurethane mixture 10 parts, silicone resin modified aqueous polyurethane mixture 10 parts, sodium methyl silicate 4 parts, silicon-dioxide 4 parts, glass flake 1 part, 0.04 part, glass fibre, propylene carbonate 1 part, dimethythiotoluene diamine 1 part, polyvinyl alcohol 0.2 part, trolamine 0.1 part, calcium lignin sulphonate 0.02 part, polyoxyethylene glycol 0.2 part, propylene glycol 1 part, diethanolamine 1 part, talcum powder 16 parts, Siloxane-Oxyalkylene Copolymers 0.1 part, nano silicon 2 parts, 40 parts, water.
Embodiment 3
A kind of composite polyurethane waterproof paint, be made up of each component of following weight: acrylic resin modified aqueous polyurethane mixture 16 parts, epoxy resin modified aqueous polyurethane mixture 16 parts, silicone resin modified aqueous polyurethane mixture 18 parts, sodium methyl silicate 8 parts, silicon-dioxide 6 parts, glass flake 3 parts, 0.08 part, glass fibre, propylene carbonate 3 parts, dimethythiotoluene diamine 3 parts, polyvinyl alcohol 0.4 part, trolamine 0.3 part, calcium lignin sulphonate 0.04 part, polyoxyethylene glycol 0.6 part, propylene glycol 2 parts, diethanolamine 3 parts, talcum powder 20 parts, Siloxane-Oxyalkylene Copolymers 0.3 part, nano silicon 6 parts, 60 parts, water.
Embodiment 4
A kind of composite polyurethane waterproof paint, be made up of each component of following weight: acrylic resin modified aqueous polyurethane compound 11 part, epoxy resin modified aqueous polyurethane mixture 12 parts, silicone resin modified aqueous polyurethane mixture 13 parts, sodium methyl silicate 5 parts, silicon-dioxide 5 parts, glass flake 2 parts, 0.05 part, glass fibre, propylene carbonate 2 parts, dimethythiotoluene diamine 2 parts, polyvinyl alcohol 0.3 part, trolamine 0.2 part, calcium lignin sulphonate 0.03 part, polyoxyethylene glycol 0.3 part, propylene glycol 1.2 parts, diethanolamine 2 parts, talcum powder 17 parts, Siloxane-Oxyalkylene Copolymers 0.2 part, nano silicon 3 parts, 45 parts, water.
Embodiment 5
A kind of composite polyurethane waterproof paint, be made up of each component of following weight: acrylic resin modified aqueous polyurethane mixture 15 parts, epoxy resin modified aqueous polyurethane mixture 14 parts, silicone resin modified aqueous polyurethane mixture 17 parts, sodium methyl silicate 7 parts, silicon-dioxide 6 parts, glass flake 3 parts, 0.07 part, glass fibre, propylene carbonate 3 parts, dimethythiotoluene diamine 3 parts, polyvinyl alcohol 0.4 part, trolamine 0.3 part, calcium lignin sulphonate 0.04 part, polyoxyethylene glycol 0.5 part, propylene glycol 1.8 parts, diethanolamine 3 parts, talcum powder 19 parts, Siloxane-Oxyalkylene Copolymers 0.3 part, nano silicon 5 parts, 55 parts, water.
The performance test results of the composite polyurethane waterproof paint that table 1 is made for embodiment 1 ~ 5.
Table 1
Certainly, just the preferred embodiments of the disclosure is described in detail above, not limits practical range of the present invention with this, and all equivalence changes done according to principle of the present invention, structure and structure, all should be covered by protection scope of the present invention.
Claims (2)
1. a composite polyurethane waterproof paint, it is characterized in that: be made up of each component of following weight: waterborne polyurethane modified mixture 30 ~ 50 parts, sodium methyl silicate 4 ~ 8 parts, silicon-dioxide 4 ~ 6 parts, glass flake 1 ~ 3 part, 0.04 ~ 0.08 part, glass fibre, propylene carbonate 1 ~ 3 part, dimethythiotoluene diamine 1 ~ 3 part, polyvinyl alcohol 0.2 ~ 0.4 part, trolamine 0.1 ~ 0.3 part, calcium lignin sulphonate 0.02 ~ 0.04 part, polyoxyethylene glycol 0.2 ~ 0.6 part, propylene glycol 1 ~ 2 part, diethanolamine 1 ~ 3 part, talcum powder 16 ~ 20 parts, Siloxane-Oxyalkylene Copolymers 0.1 ~ 0.3 part, nano silicon 2 ~ 6 parts, 40 ~ 60 parts, water.
Described waterborne polyurethane modified mixture is 10 ~ 16 parts of acrylic resin modified aqueous polyurethane mixtures, 10 ~ 16 parts of epoxy resin modified aqueous polyurethane mixtures, and 10 ~ 18 parts of silicone resin modified aqueous polyurethane mixtures are composited.
2. composite polyurethane waterproof paint according to claim 1, it is characterized in that: its weight is as follows: acrylic resin modified aqueous polyurethane mixture 13 parts, epoxy resin modified aqueous polyurethane mixture 13 parts, silicone resin modified aqueous polyurethane mixture 14 parts, sodium methyl silicate 6 parts, silicon-dioxide 5 parts, glass flake 2 parts, 0.06 part, glass fibre, propylene carbonate 2 parts, dimethythiotoluene diamine 2 parts, polyvinyl alcohol 0.3 part, trolamine 0.2 part, calcium lignin sulphonate 0.03 part, polyoxyethylene glycol 0.4 part, propylene glycol 1.5 parts, diethanolamine 2 parts, talcum powder 18 parts, Siloxane-Oxyalkylene Copolymers 0.2 part, nano silicon 4 parts, 50 parts, water.
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| CN109111242A (en) * | 2017-06-26 | 2019-01-01 | 北京时代思动科技有限公司 | A kind of concrete multifunction waterproofing agent and preparation method |
| CN109971332A (en) * | 2019-03-28 | 2019-07-05 | 安徽名士达新材料有限公司 | A kind of easy film-forming aqueous paint of high-flexibility |
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| CN114456698A (en) * | 2021-12-30 | 2022-05-10 | 安徽志诚机电零部件有限公司 | Polyurethane sponge waterproof membrane |
| CN115491113A (en) * | 2022-09-19 | 2022-12-20 | 华南理工大学 | Fast-seepage and fast-setting high polymer material and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109111242A (en) * | 2017-06-26 | 2019-01-01 | 北京时代思动科技有限公司 | A kind of concrete multifunction waterproofing agent and preparation method |
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| CN114456698A (en) * | 2021-12-30 | 2022-05-10 | 安徽志诚机电零部件有限公司 | Polyurethane sponge waterproof membrane |
| CN115491113A (en) * | 2022-09-19 | 2022-12-20 | 华南理工大学 | Fast-seepage and fast-setting high polymer material and preparation method and application thereof |
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