CN115074071A - New and old concrete adhesive and adhesion method - Google Patents
New and old concrete adhesive and adhesion method Download PDFInfo
- Publication number
- CN115074071A CN115074071A CN202210816874.9A CN202210816874A CN115074071A CN 115074071 A CN115074071 A CN 115074071A CN 202210816874 A CN202210816874 A CN 202210816874A CN 115074071 A CN115074071 A CN 115074071A
- Authority
- CN
- China
- Prior art keywords
- adhesive
- emulsion
- new
- gamma
- butadiene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- C09J171/00—Adhesives based on polyethers obtained by reactions forming an ether link in the main chain; Adhesives based on derivatives of such polymers
- C09J171/02—Polyalkylene oxides
-
- 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
-
- 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
- C09J11/06—Non-macromolecular additives organic
-
- 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
- C09J151/00—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J151/04—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers grafted on to rubbers
-
- 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
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
- C09J183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a new and old concrete adhesive and an adhesion method, belonging to the field of construction, wherein the adhesive A is laid on old concrete to reinforce, fill and bond the old concrete; the bonding method and the key points are as follows: firstly, rolling or spraying an adhesive A on the old concrete, rolling or spraying an adhesive B before the adhesive A is completely cured after the adhesive A is dried, paving new concrete before the adhesive B is not dried, and finally maintaining the new concrete.
Description
Technical Field
The invention relates to the field of construction, in particular to a new and old concrete adhesive and an adhesion method.
Background
Old concrete leads to the concrete surface to become flexible, sand and wear because of weathering and long-term car rolling, makes road surface pothole, influences pleasing to the eye and pedestrian's safety. If all the old concrete is knocked off and is made again, the cost is high. Laying a layer of new concrete on old concrete, convenient and fast, but less than half a year, the newly laid concrete hollows seriously, and finally the hollowing leads to the peeling, cracking and falling of the new concrete.
Disclosure of Invention
In view of the disadvantages of the prior art, the present invention aims to provide a new and old concrete adhesive and a bonding method which solve the problems mentioned in the background art.
In order to realize the purpose, the invention provides the following technical scheme:
a method for binding new and old concrete includes
step 2, firstly, rolling or spraying an adhesive A on the old concrete,
step 4, paving new concrete by using the adhesive B before surface drying, and finally maintaining the new concrete;
the adhesive A is a water-based silane polymer/nano-silica hybrid adhesive and comprises water-based silane polymer emulsion, gas-phase nano-silica powder, gamma-glycidoxypropyltrimethoxysilane or gamma-aminopropyltriethoxysilane, n-cyclohexyl-gamma-aminopropylmethyldimethoxysilane, dibutyl tin dilaurate and ethyl orthosilicate;
the adhesive B is an elastic adhesive of styrene-butadiene-acrylic/glass short fiber yarns, and comprises styrene-butadiene-acrylic emulsion and glass short fibers.
Further, when preparing the adhesive a, an aqueous silane polymer emulsion is prepared: preparing a shear stirrer as an emulsifying device, dripping a mixture of nano silica sol and deionized water into the organosilicon polymer at a constant speed while carrying out high-speed shear stirring of 3000 rpm on the organosilicon polymer, ensuring that the dripping is finished within 20-30 minutes, then continuing to emulsify for about 30 minutes, and finally obtaining the aqueous silane polymer emulsion after a phase inversion process.
Further, preparing a binder A, adding nano silicon dioxide powder, gamma-glycidoxypropyltrimethoxysilane, n-cyclohexyl-gamma-aminopropylmethyldimethoxysilane, ethyl orthosilicate and dibutyl tin dilaurate into the aqueous silane polymer emulsion in sequence, and completely stirring and uniformly mixing.
Further, preparation of adhesive B: adding distilled water into a reaction kettle, then adding nano silica sol, fully stirring until the nano silica sol is completely emulsified and dissolved, dropwise adding an acrylate monomer mixture under stirring, and stirring for 30min to obtain a uniform acrylate monomer pre-emulsion for later use;
adding a certain amount of butadiene-styrene emulsion into another reaction kettle, stirring and heating to 80 ℃, and dropwise adding the prepared acrylic ester monomer pre-emulsion, the initiator and the water solution of the buffer;
controlling the dropping speed so as to prepare uniform styrene-butadiene-acrylic emulsion;
after the dropwise addition, controlling the temperature to be 80-85 ℃, and keeping the temperature for 1 hour;
cooling to 40 deg.C, discharging, and filtering with 60 mesh net cloth;
adding glass short fibers into the filtered styrene-butadiene-acrylic emulsion;
the styrene-butadiene-acrylic emulsion and the alkaline metal oxide are subjected to crosslinking reaction, and the reaction activity to the resin containing acidic groups is better. During the reaction, intermolecular divalent salts, intramolecular divalent salts, and half-salt side groups are formed.
Further, the silicone polymer is a silanized silicone resin polymer terminated with CH2= CH- (CH3O)2 Si-group and having SiO as a main chain,
or (CH3O)3 Si-group-terminated polypropylene oxide, silanized polyether polymers.
A new-old concrete adhesive comprises an adhesive A and an adhesive B,
the adhesive A is a water-based silane polymer/nano-silica hybrid adhesive and comprises 30-50 parts of water-based silane polymer emulsion, 1-3 parts of gas-phase nano-silica powder, 0.5-2 parts of gamma-glycidyloxypropyltrimethoxysilane or gamma-aminopropyltriethoxysilane, 0.5-2 parts of n-cyclohexyl-gamma-aminopropylmethyldimethoxysilane, 0.2-1.5 parts of dibutyltin dilaurate and 6-10 parts of ethyl orthosilicate;
the adhesive B is an elastic adhesive of styrene-butadiene-acrylic/glass short fiber yarns, and comprises styrene-butadiene-acrylic emulsion and glass short fibers.
Furthermore, in the aqueous silane polymer emulsion, the proportion of MTES is 6%, the proportion of PPO is 60%, and the proportion of water is 34%.
Furthermore, the gas phase nano silicon dioxide powder is semi-hydrophobic TS-610, hydrophobic TS-720 or hydrophilic HS-5.
Further, the adhesive A comprises 40 parts of aqueous silane polymer emulsion, 2 parts of fumed silica powder, 1 part of gamma-glycidoxypropyltrimethoxysilane or gamma-aminopropyltriethoxysilane, 1 part of n-cyclohexyl-gamma-aminopropylmethyldimethoxysilane, 0.6 part of dibutyltin dilaurate and 8 parts of ethyl orthosilicate.
By adopting the technical scheme, the invention has the beneficial effects that:
the adhesive A is laid on the old concrete to reinforce, fill and bond the old concrete, the adhesive B is laid on the adhesive A, the new concrete is laid on the adhesive B, and the adhesive B has the function of bonding up and down.
Drawings
FIG. 1 is a table of the effect of silica type and amount on aqueous emulsions of silane silicone resins.
FIG. 2 is SEM pictures of aqueous silane polymer emulsion cured films of three types of nano-silica powder.
FIG. 3 is a graph showing the effect of the amount of powdered silica added on the strength of an aqueous adhesive on a glass substrate.
Fig. 4 is a graph of the effect of TEOS dosage on the strength of adhesive a.
FIG. 5 is a graph showing the effect of the ratio of the amounts of butylbenzene and acrylic ester on the performance of butylbenzene-propylene emulsion.
FIG. 6 is a graph of the effect of basic metal oxide on the performance of the adhesive B emulsion.
Detailed Description
Embodiments of the present invention are further described with reference to fig. 1 to 6.
The adhesive A is a waterborne silane polymer/nano-silica hybrid adhesive.
The nano silica particles can stabilize emulsions, and are also called emulsifiers and solid powder emulsifiers because they are used as emulsifiers in emulsions, like common surface active substances.
The surface hydroxyl of the nano-silicon dioxide is utilized to react with alkoxy on a silane polymer molecular chain, hydrophilic nano-silicon dioxide is grafted on the silane polymer molecular chain, a post-emulsification method is adopted, an emulsifier is not required to be added, a stable water-based silane emulsion can be obtained at a high-speed shearing rate, and any organic solvent and surface modifier are not required to be added.
Preparation of aqueous silane polymer emulsion:
and (3) taking a shear mixer as an emulsifying device to carry out high-speed shear stirring of 3000 rpm on the organic silicon polymer, simultaneously dripping the mixture of the nano silica sol and the deionized water into the organic silicon polymer at a constant speed, ensuring that the dripping is finished within 20-30 minutes, then continuing to emulsify for about 30 minutes, and finally obtaining the aqueous silane polymer emulsion after the phase inversion process.
The silicone polymer material is preferably:
one is silanized silicone resin polymer with main chain of SiO terminated by CH2= CH- (CH3O)2 Si-group, and the other is (CH3O)3 Si-group terminated polypropylene oxide, which is silanized polyether polymer;
the dimethoxy silane polymer is preferably emulsified because the number of alkoxy groups of the silane polymer having two methoxy groups at the molecular terminals is small and the stability thereof is superior to that of the polymer having three methoxy groups.
As shown in fig. 1, the type and dosage of three nano-silica hydrosol products (10nm, 20um and 100um, pH value 9-10) are affected;
from the data of fig. 1, it is known that aqueous emulsions of silane silicone resins can be prepared by controlling various conditions using the stabilizing effect of silica; the smaller the particle size of the added silicon dioxide particles is, the higher the content is, and the more obvious the shear thinning behavior is; the smaller the particle size of the silica particles, the higher the content, the higher the storage modulus, and the lower the loss factor, showing stronger interparticle interaction and higher elasticity;
the nano silicon dioxide can be used for improving the mechanical property of the adhesive, and can be used for stabilizing a polymer aqueous dispersion system by an emulsification method to fulfill the aim of enhancing the material property; the emulsions prepared show good stability at both high and low temperatures.
Preparing an adhesive A:
aqueous silane polymer emulsion (MTES: 6%, PPO: 60%, water: 34%), fumed nano-silica powder semi-hydrophobic TS-610, hydrophobic TS-720 or hydrophilic HS-5, y-glycidoxypropyltrimethoxysilane (KH560) or y-aminopropyltriethoxysilane (KH550), n-cyclohexyl-y-aminopropylmethyldimethoxysilane (HD-104), dibutyl tin dilaurate (T-12), ethyl orthosilicate (TEOS);
preferably, 40 parts of the aqueous silane polymer emulsion prepared above is weighed, and 2 parts of nano silicon dioxide powder, 1 part of KH560, 1 part of HD-104, 8 parts of TEOS and 0.6 part of T-12 are added in sequence and completely stirred and mixed uniformly.
As shown in FIG. 2, a, b and c are nano-silica powder types
SEM pictures of the water-based silane polymer emulsion curing films of the three types of nano silicon dioxide powder;
picture a is that the hydrophilic HS-5 nano silicon dioxide powder is added, and no silicon dioxide particles are seen to be effectively dispersed in the polymer matrix, which is caused by completely different hydrophilicity from that of polymer droplets;
the picture c shows that TS-720 completely hydrophobic nano-silica is added, and although a plurality of silica particles are continuously dispersed in the polymer matrix, the agglomerated particles are more and the particle size is larger;
the picture b shows that the TS610 semi-hydrophobic nano silicon dioxide particles have better dispersibility in the polymer curing coating and have better reinforcing effect.
The dosage of the nano silicon dioxide is as follows:
the effect of the amount of added powdered silica on the strength of the aqueous adhesive on the glass substrate is shown in fig. 3;
1 part, 2 parts, 3 parts and 4 parts of TS-610 nano silicon dioxide powder which accounts for 25 percent, 5 percent, 75 percent and 10 percent of the total amount of the adhesive are respectively added into the emulsion curing component; when the addition amount of the powder is not too high, the shearing strength is improved along with the increase of the powder amount;
the increase of the nano particles leads the finally obtained net structure to be firmer, but when the added powder exceeds a certain value, the shearing strength is reduced; this is because when the amount of the powder is too large, the nanoparticles are very likely to agglomerate, and the phase separation of the obtained adhesive is severe.
As shown in fig. 4, the effect of TEOS dosage:
as shown in fig. 4, as the amount of TEOS increases, the adhesive strength increases, but when the amount of TEOS exceeds 10wt%, the adhesive strength decreases conversely;
it follows that: the novel aqueous silane polymer adhesive is prepared by curing the aqueous silane polymer emulsion by using nano silicon dioxide and a curing agent; the curing process is improved by adding a silane coupling agent with epoxy groups and amino groups (the two groups have generally ideal adhesive property to most nonmetal and metal substrates), and the adhesive property is obviously improved by reinforcing the cured film with nano silicon dioxide powder.
The binder B is an elastic binder of styrene-butadiene-acrylic/short glass fiber (length 3 mm).
Preparing an adhesive:
adding distilled water into a reaction kettle, then adding nano silica sol, fully stirring until the nano silica sol is completely emulsified and dissolved, dropwise adding an acrylate monomer mixture under stirring, and stirring for 30min to obtain a uniform acrylate monomer pre-emulsion for later use;
adding a certain amount of butadiene-styrene emulsion into another reaction kettle, stirring and heating to 80 ℃, and dropwise adding the prepared acrylic ester monomer pre-emulsion, the initiator and the water solution of the buffer; controlling the dropping speed so as to prepare uniform styrene-butadiene-acrylic emulsion; and after the dropwise addition, controlling the temperature to be 80-85 ℃, and preserving the heat for 1 hour. Then the temperature is reduced to 40 ℃, and the materials are discharged and filtered by a 60-mesh net cloth.
The acrylate copolymer is connected to the outer layer of the styrene-butadiene polymer, so that the emulsion has the advantages of softness of the styrene-butadiene polymer and no re-adhesion of acrylate, and the difference of the proportion of the two has certain influence on the structure and other properties of the emulsion particles.
In conjunction with fig. 5, it follows:
the styrene-butadiene emulsion coating is light yellow, when the ratio of styrene-butadiene to acrylic ester is 8/2, the coating is still light yellow, and the emulsion coating is changed from light yellow to milky white along with the increase of the dosage of the acrylic ester; when the dosage of the acrylate is less, the acrylate can not completely wrap the butylbenzene, so that the coating still shows faint yellow, and when the dosage of the acrylate is increased, the formed copolymer can easily wrap the butylbenzene to form a structure similar to a core-shell, so that the coating shows milky color;
the styrene-butadiene emulsion coating has high tack-back, when the proportion of the styrene-butadiene emulsion coating to the styrene-butadiene emulsion coating is 8/2, the tack-back of the emulsion coating is still high, and the tack-back of the coating is reduced after the use amount of the acrylic ester is increased; this shows that after the amount of the acrylate is increased, the formed copolymer is easy to coat the butylbenzene, so that the viscosity of the coating is reduced; the glass transition temperature of the acrylate polymer is higher, so that the coating becomes harder gradually with the increase of the dosage of the acrylate polymer;
with the increase of the dosage of the acrylate monomer, the molecular weight of the polymer is increased, the formed emulsion particles become larger, the interaction force among the particles is increased, the flow resistance of the particles is also increased, and the viscosity of the system is increased;
the alkali-resistant retention rate is reduced along with the increase of the use amount of the acrylate, because the particles of the emulsion particles are increased along with the increase of the use amount of the acrylate monomer, the particle sizes of the particles in the emulsion are not very uniform, gaps among the particles are increased, and the compactness of a coating formed by the emulsion is poorer than that of a coating formed by pure styrene-butadiene emulsion, so that the coating is easy to be permeated and corroded by alkali; as can be seen from FIG. 5, the two-part monomer is used in a softer coating, better gloss and higher strength than 6/4;
as the glass transition temperature of the acrylate copolymer is increased, the coating becomes gradually hardened, and the tack-back of the coating is reduced; when its glass transition temperature is raised to 15 ℃, the coating is still relatively soft, but the surface of the coating has little tack-back. This makes the coating soft and non-tacky.
The tensile strength of the polymer coating (i.e. the tensile strength after the addition of the glass staple fibers) increases with the glass transition temperature of the acrylate copolymer and tends to increase first and then decrease; because the soft monomer with low glass transition temperature endows the adhesive with adhesive property, plays a role of internal plasticization in the coating, endows the coating with adhesive force and flexibility, the hard monomer has high glass transition temperature, endows the adhesive with cohesive force, and endows the coating with hardness and tensile strength, the tensile strength of the copolymer coating is increased along with the increase of the glass transition temperature of the copolymer, but when the glass transition temperature reaches a certain value and then is increased, the polymer coating is hardened and embrittled along with the increase of the glass transition temperature, so that the tensile strength is reduced.
Along with the increase of the glass transition temperature of the acrylate copolymer, the alkali-resistant retention rate of the glass short fiber has the tendency of increasing firstly and then decreasing; because the increase of the glass transition temperature of the copolymer increases the cohesive force of the coating copolymer, the tensile strength is increased, and the alkali corrosion resistance is increased; after the glass transition temperature rises to a certain value, the shell polymer becomes hard and brittle, so that the tensile strength is reduced, the binding power is reduced, and the alkali resistance of the coating is reduced; therefore, the glass transition temperature of the acrylic copolymer is preferably about 15 ℃.
The tensile strength of the coated glass staple fiber core-shell emulsion is higher than that of the styrene-butadiene glass staple fiber emulsion; the strength of the copolymer is increased after the styrene-butadiene is connected with the acrylate shell, and the adhesive force are increased, so that the styrene-butadiene-acrylate shell-grafted copolymer has a reinforcing effect.
Preparation of adhesive B:
the prepared adhesive emulsion and the alkaline metal oxide have better reaction activity on resin containing acidic groups after a crosslinking reaction. During the reaction, intermolecular divalent salts (intermolecular crosslinks) (a), intramolecular divalent salts (b) and half-salt side groups (c) are formed.
With reference to fig. 6, the metal oxide is crosslinked with active functional groups such as carboxyl groups in the polymer chain to form salts, so that the strength of the polymer is increased, and the tensile strength of the emulsion coating is improved; because the cross-linking agent can be blocked by active functional groups which can react with alkali and form intermolecular cross-linking, the alkali resistance of the emulsion coating is improved, but the dosage of the cross-linking agent is not excessive, otherwise the coating becomes brittle and the strength is reduced because of high cross-linking degree, and the dosage is preferably 0.5-1.5%;
can react with acid groups on the macromolecular chains to form salt to cause crosslinking between the macromolecular chains, so that the strength of the copolymer is increased, and the alkali corrosion resistance of the copolymer is improved;
the alkali resistance of the coating is obviously improved along with the increase of the dosage of the crosslinking agent, and when the dosage of the crosslinking agent is 1.5%, the alkali-resistant retention rate reaches 93.4% respectively.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art should be able to make general changes and substitutions within the technical scope of the present invention.
Claims (9)
1. The new and old concrete bonding method is characterized by comprising the following steps:
step 1, preparing an adhesive A and an adhesive B,
step 2, firstly, rolling or spraying an adhesive A on the old concrete,
step 3, rolling or spraying the adhesive B after the surface of the adhesive A is dried and before the adhesive A is completely cured,
step 4, paving new concrete by using the adhesive B before surface drying, and finally maintaining the new concrete;
the adhesive A is a water-based silane polymer/nano-silica hybrid adhesive and comprises water-based silane polymer emulsion, gas-phase nano-silica powder, gamma-glycidoxypropyltrimethoxysilane or gamma-aminopropyltriethoxysilane, n-cyclohexyl-gamma-aminopropylmethyldimethoxysilane, dibutyl tin dilaurate and ethyl orthosilicate;
the adhesive B is an elastic adhesive of styrene-butadiene-acrylic/glass short fiber yarns, and comprises styrene-butadiene-acrylic emulsion and glass short fibers.
2. The method for bonding new and old concrete according to claim 1, wherein when preparing the adhesive A, the aqueous silane polymer emulsion is prepared: preparing a shear stirrer as an emulsifying device, dripping a mixture of nano silica sol and deionized water into the organosilicon polymer at a constant speed while carrying out high-speed shear stirring of 3000 rpm on the organosilicon polymer, ensuring that the dripping is finished within 20-30 minutes, then continuing to emulsify for about 30 minutes, and finally obtaining the aqueous silane polymer emulsion after the phase inversion process.
3. The method for bonding new and old concrete according to claim 2, wherein the adhesive A is prepared by adding nano-silica powder, gamma-glycidoxypropyltrimethoxysilane, n-cyclohexyl-gamma-aminopropylmethyldimethoxysilane, ethyl orthosilicate and dibutyl tin dilaurate into aqueous silane polymer emulsion in sequence, and stirring and mixing completely.
4. The new and old concrete bonding method according to claim 1, characterized in that the preparation of adhesive B: adding distilled water into a reaction kettle, then adding nano silica sol, fully stirring until the nano silica sol is completely emulsified and dissolved, dropwise adding an acrylate monomer mixture under stirring, and stirring for 30min to obtain a uniform acrylate monomer pre-emulsion for later use;
adding a certain amount of butadiene-styrene emulsion into another reaction kettle, stirring and heating to 80 ℃, and dropwise adding the prepared acrylic ester monomer pre-emulsion, the initiator and the water solution of the buffer;
controlling the dropping speed so as to prepare uniform styrene-butadiene-acrylic emulsion;
after the dropwise addition, controlling the temperature to be 80-85 ℃, and keeping the temperature for 1 hour;
cooling to 40 deg.C, discharging, and filtering with 60 mesh net cloth;
adding glass short fibers into the filtered styrene-butadiene-acrylic emulsion;
the styrene-butadiene-acrylic emulsion and the alkaline metal oxide are subjected to crosslinking reaction, so that the styrene-butadiene-acrylic emulsion has better reaction activity on resin containing acidic groups, and intermolecular divalent salt, intramolecular divalent salt and half-salt side groups are formed in the reaction process.
5. The new and old concrete bonding method of claim 2, wherein the silicone polymer is a silylated silicone resin based polymer with SiO as the main chain, terminated with CH2= CH- (CH3O)2 Si-group,
or (CH3O)3 Si-group-terminated polypropylene oxide, silanized polyether polymers.
6. The new and old concrete adhesive is characterized by comprising an adhesive A and an adhesive B,
the adhesive A is a water-based silane polymer/nano-silica hybrid adhesive, and comprises 30-50 parts of water-based silane polymer emulsion, 1-3 parts of gas-phase nano-silica powder, 0.5-2 parts of gamma-glycidyloxypropyltrimethoxysilane or gamma-aminopropyltriethoxysilane, 0.5-2 parts of n-cyclohexyl-gamma-aminopropylmethyldimethoxysilane, 0.2-1.5 parts of dibutyltin dilaurate and 6-10 parts of ethyl orthosilicate;
the adhesive B is an elastic adhesive of styrene-butadiene-acrylic/glass short fiber yarns, and comprises styrene-butadiene-acrylic emulsion and glass short fibers.
7. The new and old concrete binder as claimed in claim 6, wherein said aqueous silane polymer emulsion contains 6% MTES, 60% PPO and 34% water.
8. The new and old concrete adhesive according to claim 6, wherein the fumed nano silica powder is semi-hydrophobic TS-610, hydrophobic TS-720 or hydrophilic HS-5.
9. The new and old concrete adhesive as claimed in claim 6, wherein the adhesive A comprises 40 parts of aqueous silane polymer emulsion, 2 parts of fumed silica powder, 1 part of gamma-glycidoxypropyltrimethoxysilane or gamma-aminopropyltriethoxysilane, 1 part of n-cyclohexyl-gamma-aminopropylmethyldimethoxysilane, 0.6 part of dibutyltin dilaurate and 8 parts of ethyl orthosilicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210816874.9A CN115074071A (en) | 2022-07-12 | 2022-07-12 | New and old concrete adhesive and adhesion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210816874.9A CN115074071A (en) | 2022-07-12 | 2022-07-12 | New and old concrete adhesive and adhesion method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115074071A true CN115074071A (en) | 2022-09-20 |
Family
ID=83259726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210816874.9A Pending CN115074071A (en) | 2022-07-12 | 2022-07-12 | New and old concrete adhesive and adhesion method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115074071A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080275176A1 (en) * | 2005-12-21 | 2008-11-06 | Henkel Ag & Co. Kgaa | Silylated Polymer Emulsion and Its Preparation Method and Uses Thereof |
| CN108559431A (en) * | 2018-04-26 | 2018-09-21 | 山西省交通科学研究院 | A kind of linking new and old concrete interface adhesive and preparation method thereof and construction technology |
| CN111718680A (en) * | 2020-05-27 | 2020-09-29 | 山西省交通科技研发有限公司 | Interface adhesive for improving bonding force of new and old concrete and preparation method and construction process thereof |
-
2022
- 2022-07-12 CN CN202210816874.9A patent/CN115074071A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080275176A1 (en) * | 2005-12-21 | 2008-11-06 | Henkel Ag & Co. Kgaa | Silylated Polymer Emulsion and Its Preparation Method and Uses Thereof |
| CN108559431A (en) * | 2018-04-26 | 2018-09-21 | 山西省交通科学研究院 | A kind of linking new and old concrete interface adhesive and preparation method thereof and construction technology |
| CN111718680A (en) * | 2020-05-27 | 2020-09-29 | 山西省交通科技研发有限公司 | Interface adhesive for improving bonding force of new and old concrete and preparation method and construction process thereof |
Non-Patent Citations (2)
| Title |
|---|
| 左加山: "玻璃纤维网格布用耐碱丁苯丙乳液的制备", pages 10 - 13 * |
| 游波: "聚合物/二氧化硅纳米复合乳液及结构研究", pages 65 - 66 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5589386B2 (en) | Hydrophilic coating agent, hydrophilic coating, and hydrophilic substrate | |
| US4496687A (en) | Aqueous emulsion-type silicone compositions | |
| EP0730015B1 (en) | Method for making organically-modified, radiation-curable siloxane resins | |
| US6071987A (en) | Silicone emulsion composition and process for producing silicone powder therefrom | |
| JP2008513580A (en) | Aqueous asphalt coating composition | |
| CN104177951B (en) | Anti-dazzle coating composition and its preparation and use | |
| JPH1060280A (en) | Water-based dispersion | |
| CN102627926B (en) | Water system adhesive composite and the raw-material manufacture method of submarine armor | |
| CA2314959C (en) | A polysiloxane having a copolymer dispersed therein and sealants containing the same | |
| CN102924922A (en) | Inorganic oxide particle containing silicone resin sheet | |
| CN109504281A (en) | A kind of emulsion-type mould release and preparation method thereof | |
| JP3044048B2 (en) | Organopolysiloxane-based elastomer powder and method for producing the same | |
| JPS648033B2 (en) | ||
| WO2023061056A1 (en) | Concrete laitance reinforcement, preparation method therefor, and application thereof | |
| JP6270444B2 (en) | Coating composition and antireflection film | |
| JPH0796623B2 (en) | Silicone rubber granular material and method for producing the same | |
| JPS61293259A (en) | Aqueous silicone paste | |
| JPH07309956A (en) | Polymer which can be extruded at high pouring speed and its production | |
| CN115074071A (en) | New and old concrete adhesive and adhesion method | |
| CN112552771B (en) | Silicon dioxide composite acrylic acid/epoxy water-based resin and preparation method thereof | |
| CN105524551B (en) | Optical coating, the manufacture method of optical coating and antireflection film | |
| EP0572927A1 (en) | Low modulus room-temperature-curable organosiloxane composition | |
| JP2992592B2 (en) | Emulsion type silicone composition and method for producing silicone fine particles | |
| JP2002327030A (en) | Core/shell type particulate and its production method | |
| JPH03281538A (en) | Silicone aqueous emulsion composition and production of silicone particulate matter using the same composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |