KR20140119319A - Inorganic aqueous binder and inorganic aqueous adhesive comprising the same - Google Patents
Inorganic aqueous binder and inorganic aqueous adhesive comprising the same Download PDFInfo
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- KR20140119319A KR20140119319A KR1020130033880A KR20130033880A KR20140119319A KR 20140119319 A KR20140119319 A KR 20140119319A KR 1020130033880 A KR1020130033880 A KR 1020130033880A KR 20130033880 A KR20130033880 A KR 20130033880A KR 20140119319 A KR20140119319 A KR 20140119319A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J1/00—Adhesives based on inorganic constituents
- C09J1/02—Adhesives based on inorganic constituents containing water-soluble alkali silicates
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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Abstract
Description
The present invention relates to an inorganic water-soluble binder and an inorganic water-based adhesive comprising the same. More specifically, the present invention relates to an inorganic water-soluble binder and a mineral water-based adhesive comprising a mixture of a sodium silicate liquid, liquid potassium silicate, silica sol, ion exchanged water and liquid lithium silicate, And an inorganic water-soluble binder comprising the inorganic water-soluble binder.
In general, inorganic binders using inorganic silicates are water-friendly, environmentally friendly, and economical in manufacturing cost. However, when used as a general adhesive, water resistance and lack of flexibility of the adhesive act as fatal weak points, , Mortar, ceramics and the like. Due to the above drawbacks, in the field of industrial adhesives, instead of using an inorganic binder, an adhesive agent which is modified or emulsified so that water dilution can be applied to a conventional petrochemical resin is used come.
However, since the adhesives using the petrochemical resin are heated at a relatively high temperature for industrial use in order to promote the evaporation of the solvent, there is a problem that the solvent evaporates and the waste of resources is wasted. By overcoming this problem, However, these methods are not only a fundamental solution but also have a problem that the cost of the new facility or the production cost is very large and the environment is not friendly. In fact.
Conventional patents for solving these problems have been disadvantageous in that the drying and curing of the inorganic water-based binders is slow, the water resistance before the sufficient drying and curing is poor, and the boiling point of the water itself due to the water- And the saturated vapor pressure is relatively high. Therefore, the drying and curing time is required to be at least 2 to 3 times as much as that of the conventional petrochemical adhesive. Further, in the conventional patent, the acrylic emulsion polymer And a polyurethane dispersed in water are mixed to produce a modified inorganic water-soluble binder, a considerable amount of precipitated coagulate, that is, a coagulum referred to in water-based emulsion polymerization, is produced during storage, Stability and storability are deteriorated and at the same time, When they lose the fire and there is a problem that the emission of toxic gases.
The use of sodium silicofluoride or calcium silicofluoride as a water-repellent agent is known in the prior art and has been found effective in many publications, but it is less effective in that the material itself is not well soluble in the silicate mixture, Is also undesirable in that it is relatively expensive.
In addition, the problem that is most frequently raised at the frontline work site is that, in the case of the two-pack type petrochemical adhesives, the adjustment of the OPEN TIME (the time from the application of the adhesive agent to the proper state of applying the adherend agent) However, in the case of the conventional inorganic adhesive, since the adhesive force is lost and becomes hardened from the surface within 20 minutes on the upper surface of the applied adhesive even though it is one-component type, May be a quick advantage, but it is pointed out that a serious drawback is that the work is ruined when the work is applied and the adhered material is not incorporated yet.
On the other hand, in order to cure existing petrochemical adhesives at room temperature, most of them are prepared as two-component type. In case of using two-component adhesives already mixed in the field work, they must be used in a short time. And there is an inconvenience that the disposal process must be taken seriously. On the other hand, Korean Unexamined Patent Publication No. 10-2006-0017237 (inorganic anionic water-based adhesive) is known as a related art related to an inorganic water-based adhesive.
Disclosure of the Invention The object of the present invention is to solve the problems of the prior art described above, and it is an object of the present invention to solve the problems of the prior art described above and to provide a method for producing a liquid silicate, (Colloidal Silica = Silica Sol) is added and mixed by using ion exchange water as a buffer to shorten the drying and curing time through securing initial water resistance, add and mix mineral fibers to the silicate mixture at a certain ratio, In order to secure the thickening effect and flexibility of the aqueous inorganic binder and to enhance the water resistance, inorganic acid diluting solution such as formic acid or phosphoric acid as a chemical hardening agent is dropped to prevent the stability of the aqueous inorganic binder for a predetermined period of time, The water resistance of the binder which is the basis for the production of the adhesive And an inorganic water-soluble binder.
Another object of the present invention is to provide a method for producing a water-soluble inorganic binder by mixing and mixing meta kaolin (calcined kaolin, calcined kaolin, fired kaolin) and calcium hydroxide in a certain ratio to the inorganic water- (Zephyr powder, diatomaceous earth powder, zeolite powder) and OPEN TIME (it becomes a proper state to attach the adhesive material after the adhesive is applied). And a surfactant for controlling the viscosity of the aqueous adhesive.
In order to achieve the above object, the present invention provides an inorganic water-based binder comprising a silicate mixture of a liquid sodium silicate, liquid potassium silicate, silica sol, ion exchanged water and liquid lithium silicate, mineral fibers and a curing agent.
Wherein said inorganic water-soluble binder is selected from the group consisting of sodium silicate, liquid silicate potassium, silica sol, ion-exchanged water and liquid silicate lithium in a weight ratio of 32 to 42: 5 to 15: 4 to 8: 1 to 3: 5 to 9, And 1.5 to 2.5 parts by weight of mineral fiber and 4 to 8 parts by weight of a curing agent based on 100 parts by weight of the mixture and the silicate mixture.
On the other hand, the inorganic water-based binder may include a wetting agent or defoaming agent, and the liquid sodium silicate is characterized in that the molar ratio of SiO 2 / Na 2 O is 2.8 to 3.2, and the liquid potassium silicate is SiO 2 / K 2 O Is in the range of 3.2 to 3.6.
The present invention also relates to a process for the production of a water-soluble binder which comprises mixing an inorganic water-soluble binder containing a silicate mixture of a liquid sodium silicate, liquid potassium silicate, silica sol, ion exchanged water and liquid lithium silicate and a mineral fiber and a curing agent with calcium hydroxide, meta kaolin, And adding a reinforcing agent mixed with at least one selected from a nephrite powder, a diatomaceous earth powder and a zeolite powder to prepare an inorganic water-based adhesive.
Wherein the inorganic water-based adhesive is selected from the group consisting of sodium silicate, liquid silicate potassium, silica sol, ion exchanged water and liquid silicate lithium in a weight ratio of 32 to 42: 5 to 15: 4 to 8: 1 to 3: 1.5 to 2.5 parts by weight of a mineral fiber, 4 to 8 parts by weight of a curing agent, 0.5 to 1.5 parts by weight of calcium hydroxide, 13 to 19 parts by weight of meta-kaolin, 1 to 3 parts by weight of zinc oxide, 2 to 6 parts by weight, and 4 to 10 parts by weight of a reinforcing agent obtained by mixing at least one selected from nephrite powder, diatomaceous earth powder and zeolite powder.
On the other hand, the inorganic water-based binder may include a wetting agent or defoaming agent, and the liquid sodium silicate is characterized in that the molar ratio of SiO 2 / Na 2 O is 2.8 to 3.2, and the liquid potassium silicate is SiO 2 / K 2 O Is in the range of 3.2 to 3.6.
According to the present invention, there is provided a non-toxic, non-combustible, non-toxic, non-toxic, non-toxic, water-soluble, By providing an environmentally friendly inorganic water-based adhesive, water resistance can be secured, drying and curing time can be shortened, and the internal structure of the adhesive can be densely formed to reduce water permeability and water absorption to improve strength, There is an effect that it is possible to provide an inorganic water-based adhesive that prevents cracking and provides flexibility.
In addition, the addition of a functional reinforcing agent (nephrite powder, diatomaceous earth powder, and zeolite powder) has the effect of decomposing formalin and volatile organic compounds (VOC), which are harmful to the human body. It is effective.
Hereinafter, the present invention will be described in detail.
The present invention provides an inorganic water-based binder having improved water resistance, stability and durability, and an inorganic water-based adhesive using the same.
The inorganic water-soluble binder may be composed of a silicate mixture of a liquid silicate of sodium silicate, liquid silicate potassium, silica sol, ion exchanged water and liquid lithium silicate, mineral fibers and a curing agent. The silicate mixture may be liquid sodium silicate, Wherein the lithium silicate is composed of potassium silicate, silica sol, ion exchanged water and liquid lithium silicate in a weight ratio of 32 to 42: 5 to 15: 4 to 8: 1 to 3: 5 to 9, 1.5 to 2.5 parts by weight, and 4 to 8 parts by weight of a curing agent. The mineral fiber is obtained by calcining various kinds of natural stone, and is produced by calcining various kinds of natural stone such as mica, slag wool fiber, talcum, glass fiber, mineral wool fiber, (mineral wool fiber), and the curing agent may be selected from phosphoric acid and formic acid.
On the other hand, the inorganic water-soluble binder may further include a wetting agent or a defoaming agent. The wetting agent may include a nonionic surfactant, and a polyether-siloxane emulsion may be used as a defoaming agent.
The inorganic water-soluble adhesive may be prepared by mixing the inorganic water-soluble binder with calcium hydroxide, meta kaolin, zinc oxide and a surfactant and adding a reinforcing agent mixed with at least one selected from nephrite powder, diatomaceous earth powder and zeolite powder Wherein the silicate mixture is composed of liquid sodium silicate, liquid sodium silicate, silica sol, ion exchanged water and liquid sodium silicate in a weight ratio of 32 to 42: 5 to 15: 4 to 8: 1 to 3: 5 to 9, 1.5 to 2.5 parts by weight of a mineral fiber, 4 to 8 parts by weight of a curing agent, 0.5 to 1.5 parts by weight of calcium hydroxide, 13 to 19 parts by weight of meta kaolin, 1 to 3 parts by weight of zinc oxide, And 4 to 10 parts by weight of a reinforcing agent mixed with at least one selected from nephrite powder, diatomaceous earth powder and zeolite powder are added and mixed It is. On the other hand, the inorganic water-based adhesive may further include a wetting agent or a defoaming agent.
The function and manufacturing process of each component of the inorganic water-based adhesive will be described in detail. The silicate mixture is prepared by mixing liquid sodium silicate, liquid potassium silicate, silica sol, ion exchanged water and liquid lithium silicate for improving initial water resistance, A mineral water-soluble binder is added to the mixture as a chemical hardener to prevent cracking of the adhesive and to dilute the mixture with mineral fibers, water-resistant reinforcing agent and diluted phosphoric acid and 10% of formic acid to 10%. Water resistance through the pozzolanic reaction with zinc oxide (ZnO) as a water-resistant reinforcing agent to the inorganic water-soluble binder, calcium hydroxide and meta kaolin to improve the denseness and strength of the cured tissue, anion generation, antibacterial, deodorization, , A functional reinforcing agent for the far-infrared radiation useful for the human body, is added alone or in a certain ratio of the powder of nephrite powder, diatomaceous earth powder and zeolite powder, and is added at the OPEN TIME (adhesive agent application) And a time until a suitable state is obtained).
The liquid sodium silicate, potassium liquid silicate and liquid lithium silicate provided as the basic liquid phase receptors of the silicate mixture are non-toxic in aqueous phase and are inexpensive and non-flammable compared to the materials of relatively different adhesives and coatings and are very useful when applied to adhesives or coatings When it is formed as a thin film, it forms an inorganic binder or an adhesive firmly and tightly adhered as it is dried, so that it can be used as various adhesives, reforming binders and extenders, adhesives such as building ceilings and wall and ceiling fiber materials, detergents and coagulants , Ceramic or powder binders for high heat-resistant coatings or electrode coatings, stone coatings and finishes.
In general, liquid sodium silicate, liquid sodium silicate, and liquid sodium silicate, which are the liquid phase of glass melted at high temperature under various formulations of sand (SiO2) and soda ash (Na2O3), have a composition ratio of SiO2 / Na2O, SiO2 / K2O and SiO2 / Li2O The basic properties of liquid sodium silicate, liquid potassium silicate, and liquid lithium silicate which are marketed domestically and externally are as shown in Table 1.
(Weight ratio)
(Molar ratio)
(%)
(%)
(20 ° C / poise)
(g / cc)
(Weight ratio)
(Molar ratio)
(%)
(%)
(20 ° C / poise)
(g / cc)
(Weight ratio)
(Molar ratio)
(%)
(%)
(20 ° C / poise)
(g / cc)
2.1
20.5
1.17
1.5
20.5
1.17
In the dry curing system, liquid silicate gradually becomes sticky due to evaporation of water and is cured by increasing viscosity. As a result, liquid sodium silicate having a relatively high molar ratio of SiO 2 / Na 2 O such as A to D in Table 1. 2.about.2.2 As shown in Table 1, the liquid phase potassium silicate having a molar ratio of SiO 2 / K 2 O of 3.2 to 3.6 is preferable for dry curing as compared with the case of E, F and G in which the molar ratio is low. In the case of A in Table 1, 62.4 % Moisture. Viscosity is 1.8 poise at 20 ℃. Viscosity is increased to 20 poise when 6% weight loss is occurred while water evaporates gradually. When it is 12% weight decrease, it increases rapidly to 2,300 poise and 13% In the course of going from 14% to 40,000 poise, the initial hardening (dry) state, which has lost substantially fluidity, is reached.
As described above, the liquid silicate having a relatively high molar ratio can shorten the time until the initial touch-up drying, and can be switched from a low viscosity state such as water to a quasi-solid state (dry by initial curing) even with a small amount of water evaporation, The liquid silicate with a low molar ratio has a high alkalinity (in the case of F and G in Table 1) and has a high affinity with water, so that the evaporation of water gradually takes place and heating at a high temperature is required to obtain a desired curing state Or too high viscosity (in case of E in Table 1), it is hard to mix with other substances and lacks flexibility, so that it is difficult to apply them practically. On the other hand, when the molar ratio is too high as in the case of potassium silicate (H) Since the liquid phase exhibits a very low low viscosity and it is difficult to be practically used, the liquid sodium silicate has a molar ratio of SiO2 / Na2O (m ole ratio of 2.8 to 3.4 and liquid molybdenum silicate having a mole ratio of SiO2 / K2O of 3.2 to 3.6.
An important advantage of liquid-phase lithium silicate is that it can produce a liquid product with a molar ratio higher than that of liquid sodium silicate or liquid sodium silicate. In the case of liquid sodium silicate, the concentration of SiO2 is 10% Liquid state lithium silicate is stable at room temperature and has a very low viscosity even when the SiO2 concentration is about 20% and the molar ratio is 5 to 8 (in case of JK in Table 1) Since the hydrated lithium ion is larger than the hydrated sodium ion or potassium ion and unlike liquid sodium silicate or liquid sodium potassium silicate, the liquid lithium silicate film dried at room temperature has a characteristic that it is not reversibly dissolved in water, The initial water resistance of the silicate mixture can be secured by using the characteristics of the liquid lithium silicate as described above.
It is most preferable that the liquid-phase lithium silicate used in the present invention has a mole ratio of SiO2 / Li2O of 4.8 to 5.2.
The liquid silicate sodium, liquid sodium silicate, liquid sodium silicate and lithium silicate having the above molar ratios are mixed at a certain ratio to produce a silicate mixture. Most preferably, : 5 to 15: 5 to 9 shows the highest adhesive strength, hardness, water resistance, etc. If the weight ratio of sodium silicate in the blend ratio is less than 32, the initial adhesion is lowered. On the other hand, If the surface of the adhesive is placed in a humidity or moisture-rich atmosphere, the surface will be whitened and the water resistance may be deteriorated. In order to reinforce the water resistance by lowering the concentration of sodium ion which can be reversibly eluted from the sodium silicate in the silicate mixture, the silica sol is added in a ratio of 4 to 8 by weight. When the weight ratio is less than 4, the water resistance of the adhesive is lowered. Is more than 8, there is a fear of deteriorating the adhesive force and inducing chalking tendency. The silica sol preferably has a particle size of 10 to 30 nm and a content of SiO2 of 30% by weight or more in order to maintain the water resistance and adhesion of the adhesive.
The inorganic adhesive according to the present invention can be applied to fire-retardant and non-toxic eco-friendly boards and panels. In order to increase the productivity during the production of such boards and panels for construction, a heat drying method is used. Usually, infrared, high frequency, Is used.
In order to solve the disadvantages of drying at room temperature as described above, to tighten the texture of the adhesive, and to further reinforce the water resistance, the pozzolanic reaction is applied to the aqueous inorganic binder, wherein the pozzolan activity is a natural product or by- The slag, which is a by-product of steel mills, is mixed with cement and reacted with chemical components in cement for a long period of time. The phenomenon contributing to the strength of the concrete structure by changing to the mineral that is expressed is called the pozzolanic phenomenon.
When meta kaolin and calcium hydroxide are added in a certain ratio by the application of the pozzolanic phenomenon, a pozzolanic reaction occurs. The meta kaolin (Al 2 O 3 2SiO 2 ) is a mixture of kaolin (Al 2 O 3 O 2 SiO 2 O 2 2H 2 O (Ca (OH) 2 ) and calcium hydroxide (Ca (OH) 2 ) which are strongly alkaline, and which contain an anhydrous state or a very small amount of water in a state where water is evaporated in a high- The pozzolanic reaction produces calcium silicate hydroxide gel (CSH (gel)) and aluminosilicate minerals containing amorphous alkaline, etc., so that when the inorganic aqueous binder is cured, And the high strength is exhibited at an early stage. The meta-kaolin has a function of preventing the gap between the particles during the production of the inorganic aqueous binder by the activation of the alkali The cured adhesive has a characteristic that it has a dense structure and the internal structure is densely formed, so that the water permeability and the water absorbability can be reduced, and a product having excellent water resistance and durability can be manufactured.
Also, in the present invention, when a paint using an inorganic water-soluble binder produced through a pozzolanic reaction is adhered to the surface of an inorganic material such as cement, adhesion force (adhesion) is increased and drying of the adhesive is promoted. The composition of the meta-kaolin used in the present invention is shown in Table 2.
In the present invention, when the amount of meta kaolin is increased, the drying and curing rate is shortened. However, since the viscosity of the final inorganic water-based adhesive is increased and the workability in the field is deteriorated, the liquid sodium silicate, liquid potassium silicate, (G / cm < 2 >) of 10,000 to 14,000 is preferable to be added and mixed in an amount of 13 to 19 parts by weight based on 100 parts by weight of the silicate mixture in which lithium silicate is mixed with water and water. The addition amount of the calcium hydroxide is preferably 0.5 to 1.5 parts by weight based on 100 parts by weight of the silicate mixture. Alumina (Al 2 O 3 ), a metal compound contained in meta-kaolin, reacts with a liquid silicate to produce an insoluble metal silicate while exhibiting an adhesive strength.
When the aqueous inorganic adhesive prepared by the present invention is applied to the surface of a cement or the like having many voids with an adhesive, mineral fibers are added and mixed to provide flexibility in order to prevent cracking of the adhesive due to the manifestation of the intrinsic strength of the inorganic material. Dispersibility, hydrophilicity, and chemical resistance and is excellent in crack-inhibiting effect of the adhesive. In the present invention, 1.5 to 2.5 parts by weight of the silicate mixture is added and mixed in an amount of 1.5 to 2.5 parts by weight, and the mineral fiber is 1.5 If it is added in an amount of less than 1 part by weight, the effect of preventing cracking of the adhesive hardly occurs and the thickening effect for preventing the settling of the adhesive is also lowered. If the amount exceeds 2.5 parts by weight, the viscosity of the adhesive is excessively increased, . In the present invention, the mineral fiber preferably has an average size of 4,000 mu m.
The silicate mixture is added with a chemical hardening agent to improve the water resistance of the adhesive, shorten the hardening time, and obtain high adhesive strength. Formic Acid and Phosphoric Acid are most suitable as a chemical hardener among various inorganic acids according to various experiments. In addition, FormicAcid and Phosphoric Acid are best suited for the present invention, and the occurrence of coagulum due to rapid reaction with strongly alkaline silicate is prevented 10% diluted aqueous solution was used and the addition method was selected by dropping reaction method. As another chemical curing agent, zinc oxide (ZnO) in undifferentiated state easily affects silicate and improves the hardness of adhesive. In particular, it easily collects carbon dioxide in the atmosphere and helps to dry the adhesive quickly, And zinc ions are added to the surface of metal such as steel to improve the corrosion resistance of the adherend by water and the overall water resistance. In the present invention, To 3 parts by weight.
On the other hand, when zinc oxide is mixed with TiO 2 or the like, it can achieve synergistic effect of strengthening the adhesive by promoting drying and absorbing ultraviolet rays and enhancing weatherability when used for external use. The addition amount of the present invention was more than 1 part by weight, and more than 3 parts by weight had no further increase effect.
In addition, the inorganic water-based adhesive can be reinforced by incorporating undifferentiated minerals having anion generating function, far-infrared radiation function, antibacterial function, deodorizing function, etc. As the functional reinforcing agent, activated nephrite powder and activated = calcined) Diatomaceous earth and activated zeolite powder are minerals that generate anions or far infrared rays, and the activated nephrite powder has an average particle size of 1000 to 3000 mesh. The activated diatomite powder has an average particle size of 2000 to 4,000 mesh, And the zeolite fine powder having an average particle size of 1000 to 3000 mesh is added and mixed at a predetermined ratio so that negative ion and far-infrared ray emission, air purification and deodorization functions can be exhibited.
The liquid silicate having a relatively high molar ratio used in the present invention shortens the time until the initial touch-up drying, so that even with a small amount of water evaporation, the transition from a low viscosity state such as water to a quasi-solid state (dry by initial curing) This can be a very advantageous point when applied in the industrial field as a real adhesive, but it can be used as an open-time after application in the field for bonding, The time required for adhering the adherend) is shortened and the one side curing may be a rapid advantage since the adherence is lost and the adherence begins to harden from the surface as the adhered adhesive becomes adhered within 20 minutes on the upper surface of the applied adhesive, It is pointed out that there is a serious drawback that the process is applied and the workpiece is not incorporated yet. In order to solve these problems, various methods were investigated and the structure and role of surfactant were focused on. When a surfactant is added to the aqueous inorganic adhesive according to the present invention, surfactant molecules that are lighter than water gather on the surface of the water. The head part of the surfactant molecule is hydrophilic, so it is immersed in the water. The tail part is hydrophobic so that it is arranged toward the air. This hydrophobic part is caused by the air, the moisture contained in the adhesive is exposed to the air So that it is possible to inhibit evaporation and thus to prolong the open time relatively. However, in the aqueous silicate which is the main component of the inorganic adhesive according to the present invention, an organic solvent or an oily component is mixed with a material having a boiling point higher than that of water or a material having a lower boiling point than water, The surfactant was most suitable for extending the open time by various experiments. In the present invention, as a nonionic surfactant, there are few foams, good cleaning power and good biodegradability. Recently, interest in environment has been increased, and as a main ingredient of environmentally friendly detergent having excellent biodegradability, polyoxyethylene alkyl ether system Of surfactant was applied. As the number of carbon atoms of the higher alcohol increases, the effect of delaying the open time increases. On the other hand, in view of compatibility and stability of the product, polyoxyethylene lauryl ether, polyoxyethylene lauryl ether, polyoxyethylene lauryl ether In the present invention, poly-oxyethylene lauryl ether was selected and its effect was verified. In the present invention, polyoxyethylene lauryl ether nonionic surfactant in M-LE 1017 (South East Synthetic Co., Korea) was applied.
On the other hand, the functional reinforcing agent is added in a range of 4 to 10 parts by weight per 100 parts by weight of the silicate mixture, alone or in combination of zeolite powder, diatomaceous earth powder and zeolite powder, and a surfactant for controlling the open time 2 to 6 parts by weight based on 100 parts by weight of the silicate mixture are added and mixed.
Hereinafter, the present invention will be described in more detail with reference to Examples. It is to be understood by those skilled in the art that these embodiments are merely illustrative of the present invention and that the scope of the present invention is not construed as being limited by these embodiments.
Example 1. Preparation of an inorganic water-soluble binder 1
(A molar ratio of SiO2 / Li2O of 5.1) and liquid silicate of sodium silicate (molar ratio of SiO2 / Na2O of 3.20), liquid phase silicate potassium of 100g (molar ratio of SiO2 / K2O of 3.22) 20 g of ion-exchanged water and 60 g of silica sol (SiO 2 content: 30% by weight, average particle size: 10 nm) were added to a 2 L laboratory planetary stirring vessel equipped with a scraper and stirred for 30 minutes or more, And 55 g of a 10% aqueous phosphoric acid solution was added dropwise thereto over a period of 1 hour using a separatory funnel. 25 g of mineral fiber was added thereto and stirred for 30 minutes or more to prepare an inorganic water-soluble binder. The mineral fiber used in the present invention is Lapinus 702K2-Roxul 1000 (Lapinus, Netherlands), with an average size of 4,000 탆.
Example 2: Preparation of an inorganic water-based binder 2
Was prepared in the same manner as in Example 1 except that a 10% diluted aqueous solution of Formic Acid was used instead of the aqueous solution of phosphoric acid in the acid hardening step.
Table 3 shows the composition, preparation method and various test results of the various test examples and comparative examples according to the present invention. As shown in Table 3, the open time of the inorganic water-based adhesive to which the nonionic surfactant was applied showed antimicrobial activity, It was confirmed that it extended without inhibiting various fungicidal and other characteristics. Furthermore, it was found that the combination of hardening using various inorganic acids and pozzolans and various functional minerals ensures sufficient water resistance. Also, as can be seen from the storage stability test, it was found that the product in which the inorganic water-based adhesive was manufactured in the same composition as in the present invention had no abnormality in the cold / heat stability test unlike the conventional aqueous product.
In order to explain the effect of the present invention, Table 4 shows a comparison of the physical properties with the conventional epoxy two-component adhesives.
Having described specific portions of the present invention in detail, it will be apparent to those skilled in the art that this specific description is only a preferred embodiment and that the scope of the present invention is not limited thereby. It will be obvious. Accordingly, the actual scope of the present invention will be defined by the appended claims and their equivalents.
Claims (10)
An inorganic filler, a wetting agent or a defoaming agent.
Wherein the silicate mixture is constituted by a weight ratio of liquid sodium silicate, liquid sodium potassium silicate, silica sol, ion exchanged water and liquid lithium silicate in a weight ratio of 32 to 42: 5 to 15: 4 to 8: 1 to 3: 5 to 9, Wherein the mineral filler is mixed with 1.5 to 2.5 parts by weight of mineral fiber and 4 to 8 parts by weight of a curing agent based on 100 parts by weight of the silicate mixture.
The liquid sodium silicate is a water-based inorganic binder, characterized in that a molar ratio of 2.8 to 3.2 of SiO 2 / Na 2 O.
Wherein the liquid phase silicate potassium has a molar ratio of SiO 2 / K 2 O of 3.2 to 3.6.
An inorganic filler, a wetting agent or a defoaming agent.
Wherein the silicate mixture is constituted by a weight ratio of liquid sodium silicate, liquid sodium potassium silicate, silica sol, ion exchanged water and liquid lithium silicate in a weight ratio of 32 to 42: 5 to 15: 4 to 8: 1 to 3: 5 to 9, 1.5 to 2.5 parts by weight of mineral fiber, 4 to 8 parts by weight of hardener, 0.5 to 1.5 parts by weight of calcium hydroxide, 13 to 19 parts by weight of meta kaolin, 1 to 3 parts by weight of zinc oxide, 2 to 6 parts by weight of zinc oxide, And 4 to 10 parts by weight of a reinforcing agent obtained by mixing at least one selected from nephrite powder, diatomaceous earth powder and zeolite powder.
The liquid sodium silicate is an inorganic water-based adhesive, characterized in that a molar ratio of 2.8 to 3.2 of SiO 2 / Na 2 O.
The liquid potassium silicate is an inorganic water-based adhesive, it characterized in that the molar ratio of SiO 2 / K 2 O 3.2 to 3.6.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101878835B1 (en) * | 2016-11-07 | 2018-07-17 | 케이엠비(주) | Fire-proof adhhestive composition |
| CN110669442A (en) * | 2019-11-25 | 2020-01-10 | 陕西省石油化工研究设计院 | Silica sol binder for desulfurization and denitrification of power plant and preparation method thereof |
| KR20200097193A (en) * | 2019-02-07 | 2020-08-18 | 류상열 | Inorganic low viscosity aqueous adhesive coating composition and its use |
| KR20200130038A (en) * | 2019-05-08 | 2020-11-18 | 인천대학교 산학협력단 | Alkali silicate adhesive composition and method of curing using the same |
| KR20200130039A (en) * | 2019-05-08 | 2020-11-18 | 인천대학교 산학협력단 | Method of curing using an alkali silicate adhesive composition |
| KR102424851B1 (en) * | 2022-05-17 | 2022-07-26 | 한국유지보수(주) | Infiltrative combined type inorganic strengthening agent composition and construction method for asphalt complex waterproofing bridge deck using the same |
-
2013
- 2013-03-28 KR KR1020130033880A patent/KR20140119319A/en active IP Right Grant
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101878835B1 (en) * | 2016-11-07 | 2018-07-17 | 케이엠비(주) | Fire-proof adhhestive composition |
| KR20200097193A (en) * | 2019-02-07 | 2020-08-18 | 류상열 | Inorganic low viscosity aqueous adhesive coating composition and its use |
| KR20200130038A (en) * | 2019-05-08 | 2020-11-18 | 인천대학교 산학협력단 | Alkali silicate adhesive composition and method of curing using the same |
| KR20200130039A (en) * | 2019-05-08 | 2020-11-18 | 인천대학교 산학협력단 | Method of curing using an alkali silicate adhesive composition |
| CN110669442A (en) * | 2019-11-25 | 2020-01-10 | 陕西省石油化工研究设计院 | Silica sol binder for desulfurization and denitrification of power plant and preparation method thereof |
| KR102424851B1 (en) * | 2022-05-17 | 2022-07-26 | 한국유지보수(주) | Infiltrative combined type inorganic strengthening agent composition and construction method for asphalt complex waterproofing bridge deck using the same |
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