CN111560182A - Exterior wall putty - Google Patents
Exterior wall putty Download PDFInfo
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- CN111560182A CN111560182A CN202010480411.0A CN202010480411A CN111560182A CN 111560182 A CN111560182 A CN 111560182A CN 202010480411 A CN202010480411 A CN 202010480411A CN 111560182 A CN111560182 A CN 111560182A
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/34—Filling pastes
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Abstract
The invention relates to the technical field of building materials, in particular to exterior wall putty, which comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 200-250 parts of PO42.5 cement, 200-250 parts of 400-mesh coarse whiting, 280-320 parts of 80-120-mesh quartz sand, 0.5-1 part of hydroxyethyl cellulose and 1-10 parts of a high-efficiency water reducing agent; the component B comprises the following components in parts by weight: 80-120 parts of elastic acrylic polymer emulsion, 130-170 parts of deionized water and 0-1.5 parts of an antibacterial agent; the elastic acrylic polymer emulsion comprises the following components in parts by weight: 65-85 parts of acrylic emulsion, 10-15 parts of polytetrafluoroethylene, 5-12 parts of ethylene propylene diene monomer rubber powder, 3-8 parts of tetrahydrofuran acrylate and 1-5 parts of calcium stearate. The invention improves the weather resistance of the putty and the base material by improving the adhesion performance between the putty and the base material, thereby reducing the possibility of cracking and falling off the base material.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to exterior wall putty.
Background
The exterior wall putty is a material with a coating function, which is finely processed by taking an inorganic gelled material as a base material, matching with a binding material and other auxiliary agents. The exterior wall putty serving as an outdoor building surface leveling material is widely applied to cement wall surfaces, concrete wall surfaces, mosaic wall surfaces, ceramic tile wall surfaces and the like.
The existing exterior wall putty has good elasticity and toughness, is usually coated on the surface of an exterior wall substrate, and then is coated with materials such as primer, finish paint and the like, so that a whole exterior wall coating is formed, the putty plays a role in connecting the exterior wall substrate with the coatings such as the primer and the like, the adhesion of the putty is very important, and the whole exterior wall coating can be exposed in the atmosphere for a long time and can be subjected to the actions of wind blowing, sun drying, salt spray corrosion, rain, cold and hot changes and the like, so that the coating is easy to crack or even peel off under the long-term repeated erosion of the external natural environments, and the coating loses the original decorative and protective functions. Therefore, how to improve the weather resistance of the putty within the service life so as to reduce the occurrence of cracking and even peeling of the whole exterior wall coating is a problem which needs to be solved urgently in the building material industry at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the exterior wall putty, which improves the weather resistance by improving the adhesion performance between the exterior wall putty and a base material, thereby reducing the possibility of cracking and falling off the base material.
The purpose is realized by the following technical scheme:
the exterior wall putty comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 200-250 parts of PO42.5 cement, 200-250 parts of 400-mesh coarse whiting, 280-320 parts of 80-120-mesh quartz sand, 0.5-1 part of hydroxyethyl cellulose and 1-10 parts of a high-efficiency water reducing agent;
the component B comprises the following components in parts by weight: 80-120 parts of elastic acrylic polymer emulsion, 130-170 parts of deionized water and 0-1.5 parts of an antibacterial agent; the elastic acrylic polymer emulsion comprises the following components in parts by weight: 65-85 parts of acrylic emulsion, 10-15 parts of polytetrafluoroethylene, 5-12 parts of ethylene propylene diene monomer rubber powder, 3-8 parts of tetrahydrofuran acrylate and 1-5 parts of calcium stearate.
By adopting the technical scheme, the polytetrafluoroethylene emulsion has excellent physical and chemical properties such as weather resistance, heat resistance and low temperature resistance, the electronegativity of fluorine elements in molecules is large, the carbon-fluorine bond energy is strong, the acrylic emulsion has good activity, and the combination of the fluorine elements and the acrylic emulsion has the function of improving the surface tension of the acrylic emulsion, so that the adsorbability of putty on an outer wall is improved, and the possibility of the putty falling off from the surface of an outer wall base material is reduced;
the tetrahydrofuran acrylate has good permeability, and is beneficial to improving the degree of the putty penetrating into the exterior wall base material, so that the adhesion between the putty and the exterior wall base material is improved, and the anti-stripping property of the exterior wall putty coating is improved.
The present invention in a preferred example may be further configured to: the preparation method of the elastic acrylic polymer emulsion comprises the following steps: firstly adding acrylic emulsion and polytetrafluoroethylene into an internal mixer, heating to a molten state, uniformly mixing, then adding ethylene propylene diene monomer powder, tetrahydrofuran acrylate and calcium stearate, continuously stirring until the mixture is uniformly mixed, then adding the mixture into a screw extruder, extruding into strips, cooling the strips, and then heating to a molten state to obtain the elastic acrylic polymer emulsion.
By adopting the technical scheme, the operation of extrusion is beneficial to further improving the combination strength among the components, so that the synergistic effect among the components is more fully exerted, and the adhesion property of the elastic acrylic polymer emulsion is improved.
The present invention in a preferred example may be further configured to: the component A also comprises 30-50 parts of acrylamide, and the elastic acrylic polymer emulsion also comprises 10-25 parts of polyacrylamide.
By adopting the technical scheme, the polyacrylamide is polar adsorption resin with amide groups, the acrylamide is added into the component A, and the polyacrylamide adsorbs the acrylamide through Van der Waals force according to the principle of polar similarity and intermiscibility, so that the connection strength of the component A and the component B after blending is improved, the stability and the strength of a putty system structure are improved, and the cracking resistance and the peeling resistance of an outer wall coating are improved.
The present invention in a preferred example may be further configured to: the component A also comprises 15-35 parts of polyurethane and carbon fiber modified polypropylene fiber.
By adopting the technical scheme, the polyurethane has good elasticity and toughness, and most of carbon atoms in the carbon fibers are SP2Hybridization, phase comparison SP3Hybrid, SP2The S track component in hybridization is large, so that the carbon fiber has high modulus and high strength, and simultaneously has flexibility; the polypropylene is modified by the polyurethane and the carbon fiber to make up the defects of insufficient elasticity, low hardness and poor heat resistance of the polypropylene, and the three components can be filled in gaps among the components in a synergistic manner due to the special shape and structure of the fiber to play a role in enhancing the structure of the putty system, so that the improvement of the toughness and the strength is beneficial to improving the crack resistance of the putty.
The present invention in a preferred example may be further configured to: the preparation method of the polyurethane and carbon fiber modified polypropylene fiber comprises the following steps: 1) carrying out anodic oxidation treatment on the carbon fibers by adopting an ammonium hydrogen phosphate solution with the concentration of 4%, repeatedly washing the carbon fibers after treatment, and introducing the carbon fibers after washing into a chromic acid solution, wherein the chromic acid solution is prepared from potassium dichromate, water and concentrated sulfuric acid in a ratio of 1: 2: 15 for 30min, repeatedly washing with water, and then crushing the carbon fibers into fine powder; 2) adding polypropylene into an internal mixer, heating to a molten state, adding polyurethane, uniformly mixing, adding carbon fiber fine powder, stirring for 10min, and feeding into a screw extruder; 3) and re-spinning the strip mixture extruded by the screw extruder to obtain the polypropylene fiber modified by polyurethane and carbon fiber.
The present invention in a preferred example may be further configured to: the preparation steps of the putty are as follows: 1) premixing the component A: adding PO42.5 cement, 400-mesh coarse whiting, 80-120-mesh quartz sand, hydroxyethyl cellulose and a high-efficiency water reducing agent into a stirrer, and uniformly mixing; 2) premixing the component B: adding deionized water into a stirrer, adding the elastic acrylic polymer emulsion, uniformly mixing, adding the antibacterial agent, and uniformly blending; 3) preparing putty: the component A and the component B are mixed according to the proportion of 100: and (5) mixing the components in the mass ratio of (5) to (15), and uniformly stirring to obtain the putty.
The present invention in a preferred example may be further configured to: the high-efficiency water reducing agent is a sulfamate water reducing agent.
By adopting the technical scheme, the sulfamate water reducing agent is adsorbed on the surfaces of PO42.5 cement particles to enable the particles to show electrical property, and the particles are mutually repelled due to the same charges, so that the PO42.5 cement particles are dispersed to release redundant water among the particles to generate a water reducing effect; on the other hand, after the sulfamate water reducer is added, an adsorption film is formed on the surface of PO42.5 cement particles, the hydration speed of PO42.5 cement is influenced, the growth of PO42.5 cement stone crystals is more complete, so that capillary gaps of water evaporation are reduced, the network structure in the putty is more compact, and the hardness and the structural compactness of the putty are improved.
The present invention in a preferred example may be further configured to: the antibacterial agent is a quaternary ammonium salt antibacterial agent.
By adopting the technical scheme, the quaternary ammonium salt antibacterial agent has the advantages of high sterilization speed, strong sterilization capability, convenience in processing, stable color, almost no toxicity and low price, so that the quaternary ammonium salt antibacterial agent is selected to be used as the antibacterial agent in the scheme.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the polytetrafluoroethylene emulsion in the elastic acrylic polymer emulsion has excellent physical and chemical properties such as weather resistance, heat resistance, low temperature resistance and the like, the fluorine element in the molecule of the polytetrafluoroethylene emulsion has large electronegativity and strong fluorocarbon bond energy, the acrylic emulsion has good activity, and the combination of the fluorine element and the fluorocarbon bond has the function of improving the surface tension of the acrylic emulsion, so that the adsorbability of putty on an outer wall is improved, and the possibility of falling off from the surface of an outer wall base material is reduced;
2. the polyacrylamide is polar adsorption resin with amide groups, the acrylamide is added into the component A, and the polyacrylamide is adsorbed by Van der Waals force according to the principle of polar similarity and intermiscibility, so that the connection strength of the component A and the component B after blending is improved, the stability and the strength of a putty system structure are improved, and the cracking resistance and the peeling resistance of an outer wall coating are improved;
3. the polypropylene is modified by the polyurethane and the carbon fiber to make up the defects of insufficient elasticity, low hardness and poor heat resistance of the polypropylene, and the three components can be filled in gaps among the components in a synergistic manner due to the special shape and structure of the fiber to play a role in enhancing the structure of the putty system, so that the improvement of the toughness and the strength is beneficial to improving the crack resistance of the putty.
Detailed Description
Embodiment 1, the exterior wall putty disclosed by the invention comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 225 parts of PO42.5 cement, 225 parts of 400-mesh heavy calcium, 300 parts of 100-mesh quartz sand, 40 parts of acrylamide, 25 parts of polyurethane and carbon fiber modified polypropylene fiber, 0.75 part of hydroxyethyl cellulose and 5 parts of sulfamate water reducing agent;
the component B comprises the following components in parts by weight: 100 parts of elastic acrylic polymer emulsion, 150 parts of deionized water and 0.85 part of quaternary ammonium salt antibacterial agent; the elastic acrylic polymer emulsion comprises the following components in parts by weight: 75 parts of acrylic emulsion, 12.5 parts of polytetrafluoroethylene, 17.5 parts of polyacrylamide, 8.5 parts of ethylene propylene diene monomer rubber powder, 5.5 parts of tetrahydrofuran acrylate and 3 parts of calcium stearate;
the preparation method of the elastic acrylic polymer emulsion comprises the following steps: firstly adding acrylic emulsion, polytetrafluoroethylene and polyacrylamide into an internal mixer, heating to a molten state, uniformly mixing, then adding ethylene propylene diene monomer powder, tetrahydrofuran acrylate and calcium stearate, continuously stirring until the mixture is uniformly mixed, then adding the mixture into a screw extruder, extruding into strips, cooling the strips, and then heating to a molten state to obtain elastic acrylic polymer emulsion;
the preparation method of the polypropylene fiber modified by polyurethane and carbon fiber comprises the following steps: 1) carrying out anodic oxidation treatment on the carbon fibers by adopting an ammonium hydrogen phosphate solution with the concentration of 4%, repeatedly washing the carbon fibers after treatment, and introducing the carbon fibers after washing into a chromic acid solution, wherein the chromic acid solution is prepared from potassium dichromate, water and concentrated sulfuric acid in a ratio of 1: 2: 15 for 30min, repeatedly washing with water, and then crushing the carbon fibers into fine powder; 2) adding polypropylene into an internal mixer, heating to a molten state, adding polyurethane, uniformly mixing, adding carbon fiber fine powder, stirring for 10min, and feeding into a screw extruder; 3) carrying out fiber spinning treatment on the strip-shaped mixture extruded by the screw extruder again to prepare polyurethane and carbon fiber modified polypropylene fibers;
the preparation steps of the putty are as follows: 1) premixing the component A: adding PO42.5 cement, 400-mesh coarse whiting, 100-mesh quartz sand, acrylamide, polyurethane and carbon fiber modified polypropylene fiber, hydroxyethyl cellulose and an amino sulfonate water reducer into a stirrer, and uniformly mixing; 2) premixing the component B: adding deionized water into a stirrer, adding the elastic acrylic polymer emulsion, uniformly mixing, adding the quaternary ammonium salt antibacterial agent, and uniformly blending; 3) preparing putty: the component A and the component B are mixed according to the proportion of 100: 10, and uniformly stirring to obtain the putty.
Embodiment 2 is an exterior wall putty disclosed by the invention, and is different from embodiment 1 in that:
the component A comprises the following components in parts by weight: 200 parts of PO42.5 cement, 200 parts of 400-mesh heavy calcium, 280 parts of 100-mesh quartz sand, 30 parts of acrylamide, 15 parts of polyurethane and carbon fiber modified polypropylene fiber, 0.5 part of hydroxyethyl cellulose and 1 part of sulfamate water reducing agent.
Embodiment 3 is an exterior wall putty disclosed by the invention, and is different from embodiment 1 in that:
the component A comprises the following components in parts by weight: 250 parts of PO42.5 cement, 250 parts of 400-mesh coarse whiting, 320 parts of 100-mesh quartz sand, 50 parts of acrylamide, 35 parts of polyurethane and carbon fiber modified polypropylene fiber, 1 part of hydroxyethyl cellulose and 10 parts of sulfamate water reducing agent.
Embodiment 4 is an exterior wall putty disclosed by the invention, and is different from embodiment 1 in that:
the component B comprises the following components in parts by weight: 80 parts of elastic acrylic polymer emulsion, 130 parts of deionized water and 0 part of quaternary ammonium salt antibacterial agent; the elastic acrylic polymer emulsion comprises the following components in parts by weight: 65 parts of acrylic emulsion, 10 parts of polytetrafluoroethylene, 10 parts of polyacrylamide, 5 parts of ethylene propylene diene monomer powder, 3 parts of tetrahydrofuran acrylate and 1 part of calcium stearate.
Embodiment 5 is an exterior wall putty disclosed by the invention, and is different from embodiment 1 in that:
the component B comprises the following components in parts by weight: 120 parts of elastic acrylic polymer emulsion, 170 parts of deionized water and 1.5 parts of quaternary ammonium salt antibacterial agent; the elastic acrylic polymer emulsion comprises the following components in parts by weight: 85 parts of acrylic emulsion, 15 parts of polytetrafluoroethylene, 25 parts of polyacrylamide, 12 parts of ethylene propylene diene monomer powder, 8 parts of tetrahydrofuran acrylate and 5 parts of calcium stearate.
Embodiment 6 is an exterior wall putty disclosed by the invention, and is different from embodiment 1 in that:
the component A and the component B are mixed according to the proportion of 100: 5 in a mass ratio.
Embodiment 7 is an exterior wall putty disclosed by the invention, and is different from embodiment 1 in that:
the component A and the component B are mixed according to the proportion of 100: 15, were mixed.
Embodiment 8 is an exterior wall putty disclosed by the invention, and is different from embodiment 1 in that:
acrylamide is not added in the component A;
no polyacrylamide was added to component B.
Embodiment 9 is an exterior wall putty disclosed in the present invention, which is different from embodiment 1 in that:
polyurethane and carbon fiber modified polypropylene fibers are not added in the component A.
Embodiment 10 is an exterior wall putty disclosed by the invention, which comprises a component A and a component B, and is different from embodiment 1 in that:
the component A comprises the following components in parts by weight: 225 parts of PO42.5 cement, 225 parts of 400-mesh heavy calcium, 300 parts of 100-mesh quartz sand, 40 parts of acrylamide, 25 parts of polypropylene fiber, 0.75 part of hydroxyethyl cellulose and 5 parts of sulfamate water reducing agent; a preparation method of polypropylene fiber modified by correspondingly deleting polyurethane and carbon fiber.
Embodiment 11 is an exterior wall putty disclosed by the invention, which comprises a component A and a component B, and is different from embodiment 1 in that:
the component A comprises the following components in parts by weight: 225 parts of PO42.5 cement, 225 parts of 400-mesh heavy calcium, 300 parts of 100-mesh quartz sand, 40 parts of acrylamide, 25 parts of polyurethane modified polypropylene fiber, 0.75 part of hydroxyethyl cellulose and 5 parts of sulfamate water reducing agent;
the preparation method of the polyurethane modified polypropylene fiber comprises the following steps: 1) adding polypropylene into an internal mixer, heating to a molten state, adding polyurethane into the internal mixer, stirring for 10min, and feeding into a screw extruder; 2) and (3) carrying out fiber spinning treatment on the strip-shaped mixture extruded by the screw extruder again to obtain the polyurethane modified polypropylene fiber.
Embodiment 12 is an exterior wall putty disclosed by the present invention, which comprises a component a and a component B, and is different from embodiment 1 in that:
the component A comprises the following components in parts by weight: 225 parts of PO42.5 cement, 225 parts of 400-mesh heavy calcium, 300 parts of 100-mesh quartz sand, 40 parts of acrylamide, 25 parts of carbon fiber modified polypropylene fiber, 0.75 part of hydroxyethyl cellulose and 5 parts of sulfamate water reducing agent;
the preparation method of the carbon fiber modified polypropylene fiber comprises the following steps: 1) carrying out anodic oxidation treatment on the carbon fibers by adopting an ammonium hydrogen phosphate solution with the concentration of 4%, repeatedly washing the carbon fibers after treatment, and introducing the carbon fibers after washing into a chromic acid solution, wherein the chromic acid solution is prepared from potassium dichromate, water and concentrated sulfuric acid in a ratio of 1: 2: 15 for 30min, repeatedly washing with water, and then crushing the carbon fibers into fine powder; 2) adding polypropylene into an internal mixer, heating to a molten state, adding the carbon fiber fine powder, stirring for 10min, and feeding into a screw extruder; 3) and re-spinning the strip mixture extruded by the screw extruder to obtain the carbon fiber modified polypropylene fiber.
The comparative example 1 is the exterior wall putty disclosed by the invention, and comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 225 parts of PO42.5 cement, 225 parts of 400-mesh heavy calcium, 300 parts of 100-mesh quartz sand, 0.75 part of hydroxyethyl cellulose and 5 parts of sulfamate water reducing agent;
the component B comprises the following components in parts by weight: 100 parts of acrylic emulsion, 150 parts of deionized water and 0.85 part of quaternary ammonium salt antibacterial agent.
Comparative example 2, the difference of the exterior wall putty disclosed by the invention from comparative example 1 is that:
the acrylic emulsion in the component B is replaced by elastic acrylic polymer emulsion, and the elastic acrylic polymer emulsion comprises the following components in parts by weight: 75 parts of acrylic emulsion and 12.5 parts of polytetrafluoroethylene.
Comparative example 3, the difference of the exterior wall putty disclosed by the invention from comparative example 1 is that:
the acrylic emulsion in the component B is replaced by elastic acrylic polymer emulsion, and the elastic acrylic polymer emulsion comprises the following components in parts by weight: 75 parts of acrylic emulsion and 5.5 parts of tetrahydrofuran acrylate.
Comparative example 4, the difference of the exterior wall putty disclosed by the invention from comparative example 1 is that:
the acrylic emulsion in the component B is replaced by elastic acrylic polymer emulsion, and the elastic acrylic polymer emulsion comprises the following components in parts by weight: 75 parts of acrylic emulsion, 12.5 parts of polytetrafluoroethylene and 5.5 parts of tetrahydrofuran acrylate.
Performance test
The putties prepared from the formulations of examples 1-12 and comparative examples 1-4 were sampled and the samples were tested for the following performance tests.
And (3) detecting the adhesion performance of the coating: the adhesion performance of the coating is tested by adopting an ISO-2409 grid cutting method, and the grid cutting distance is 1 mm; the test results were classified into 6 grades and recorded in table 1;
level 0: the product is completely smooth without any grid layering;
level 1: small pieces are stripped at the intersection, and the influence area is 5%;
and 2, stage: the cross points are peeled off along the edges, and the influence area is 5-15%;
and 3, level: peeling off the whole strip along the edge, wherein the influence area is 15-35%;
4, level: the whole grid is peeled off along the edge, and some grids are partially or completely peeled off, so that the influence area is 35-65%;
and 5, stage: any peel grade greater than grade 4.
And (3) detecting water resistance: the water resistance of the samples was characterized by measuring the water resistance coefficient of the samples. The water resistance coefficient is expressed by K, and the larger the K value is, the better the water resistance of the sample is; otherwise, the water resistance was poor and the test results are reported in table 1.
And (3) detecting the elongation at break: the elongation at break of the putty coating layer was tested according to GB/T16777-2008, the greater the elongation at break, the stronger the toughness of the sample, the stronger the resistance to crack initiation, and the test results are reported in Table 1.
And (3) detecting the permeability: adopting a direct current method, putting a sample in vacuum to saturate, sealing and then continuously electrifying for 6h, recording current every 30min, and recording the total electric quantity within 6 h; the total electric quantity is more than 4000, the permeability is high, and the impermeability is poor; the total electric quantity is 2000-4000, the permeability is medium, and the impermeability is medium; the total charge was < 2000, the permeability was low, indicating good barrier properties, and the test results are reported in table 1.
TABLE 1-test data for various physical and chemical properties of samples
| Sample (I) | Grade of exfoliation | Water resistance coefficient | Elongation at break/% | Total quantity of electricity |
| Example 1 | 0 | 0.91 | 367 | 1456 |
| Example 2 | 0 | 0.92 | 358 | 1438 |
| Example 3 | 0 | 0.90 | 362 | 1449 |
| Example 4 | 0 | 0.87 | 363 | 1430 |
| Example 5 | 0 | 0.88 | 356 | 1452 |
| Example 6 | 0 | 0.84 | 354 | 1433 |
| Example 7 | 0 | 0.85 | 361 | 1489 |
| Example 8 | 1 | 0.83 | 332 | 1566 |
| Example 9 | 1 | 0.74 | 301 | 1893 |
| Example 10 | 2 | 0.77 | 312 | 1762 |
| Example 11 | 1 | 0.78 | 323 | 1734 |
| Example 12 | 1 | 0.81 | 327 | 1655 |
| Comparative example 1 | 4 | 0.65 | 265 | 2798 |
| Comparative example 2 | 2 | 0.69 | 287 | 2563 |
| Comparative example 3 | 3 | 0.71 | 281 | 2634 |
| Comparative example 4 | 2 | 0.75 | 291 | 2321 |
From the various performance test data of the samples in table 1, it can be seen that:
1. the influence of the addition amount of various base materials in the component A or the component B on various physical and chemical properties of a sample is not large, the sample still has good anti-stripping property, water resistance, toughness and seepage resistance, and the sample has good weather resistance according to the four properties;
2. the addition ratio of the component A and the component B is changed in a proper range, the influence on various physical and chemical properties of the sample is not large, and the sample still has good stripping resistance, water resistance, toughness and seepage resistance;
3. the addition of the acrylamide and the polyacrylamide has a remarkable promoting effect on improving the surface adhesion performance of a sample; 4. the polypropylene fiber modified by the polyurethane and the carbon fiber has obvious promotion effect on improving the surface adhesion, water resistance, toughness and seepage resistance of a sample, which is probably because a compact supporting framework is formed in a system by the special fiber structure of the modified polypropylene fiber, so that the permeation of penetrating fluid is prevented, the toughness of putty is increased, and the surface adhesion of the putty is improved by the synergistic cooperation of the two modifiers of the polyurethane and the carbon fiber;
5. the polyurethane modified polypropylene fiber and the carbon fiber modified polypropylene fiber both have the function of improving the surface adhesiveness of a sample so as to improve the weather resistance of the sample, but the improvement effect is not as obvious as that of the polypropylene fiber modified by polyurethane and carbon fiber;
6. comparative example 1 is a control sample in the prior art, and after comparison with a plurality of examples, the weather resistance of the putty prepared by the formula of the component A and the component B in the scheme is obviously improved;
7. the polytetrafluoroethylene and the tetrahydrofuran acrylate can improve the surface adhesion performance of a sample to a certain extent, so that the weather resistance of the sample is improved, and the improvement effect of the two substances when being added independently is not as obvious as that of the two substances when being added simultaneously.
The present embodiment is only for explaining the present invention, and not for limiting the present invention, and those skilled in the art can make modifications without inventive contribution to the present embodiment as needed after reading the present specification, but all of which are protected by patent law within the scope of the claims of the present invention.
Claims (8)
1. The exterior wall putty comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 200-250 parts of PO42.5 cement, 200-250 parts of 400-mesh coarse whiting, 280-320 parts of 80-120-mesh quartz sand, 0.5-1 part of hydroxyethyl cellulose and 1-10 parts of a high-efficiency water reducing agent;
the component B comprises the following components in parts by weight: 80-120 parts of elastic acrylic polymer emulsion, 130-170 parts of deionized water and 0-1.5 parts of an antibacterial agent; the elastic acrylic polymer emulsion comprises the following components in parts by weight: 65-85 parts of acrylic emulsion, 10-15 parts of polytetrafluoroethylene, 5-12 parts of ethylene propylene diene monomer rubber powder, 3-8 parts of tetrahydrofuran acrylate and 1-5 parts of calcium stearate.
2. The exterior wall putty as set forth in claim 1, wherein: the preparation method of the elastic acrylic polymer emulsion comprises the following steps: firstly adding acrylic emulsion and polytetrafluoroethylene into an internal mixer, heating to a molten state, uniformly mixing, then adding ethylene propylene diene monomer powder, tetrahydrofuran acrylate and calcium stearate, continuously stirring until the mixture is uniformly mixed, then adding the mixture into a screw extruder, extruding into strips, cooling the strips, and then heating to a molten state to obtain the elastic acrylic polymer emulsion.
3. The exterior wall putty as set forth in claim 1, wherein: the component A also comprises 30-50 parts of acrylamide, and the elastic acrylic polymer emulsion also comprises 10-25 parts of polyacrylamide.
4. The exterior wall putty as set forth in claim 1, wherein: the component A also comprises 15-35 parts of polyurethane and carbon fiber modified polypropylene fiber.
5. The exterior wall putty as set forth in claim 4, wherein: the preparation method of the polyurethane and carbon fiber modified polypropylene fiber comprises the following steps: 1) carrying out anodic oxidation treatment on the carbon fibers by adopting an ammonium hydrogen phosphate solution with the concentration of 4%, repeatedly washing the carbon fibers after treatment, and introducing the carbon fibers after washing into a chromic acid solution, wherein the chromic acid solution is prepared from potassium dichromate, water and concentrated sulfuric acid in a ratio of 1: 2: 15 for 30min, repeatedly washing with water, and then crushing the carbon fibers into fine powder; 2) adding polypropylene into an internal mixer, heating to a molten state, adding polyurethane, uniformly mixing, adding carbon fiber fine powder, stirring for 10min, and feeding into a screw extruder; 3) and re-spinning the strip mixture extruded by the screw extruder to obtain the polypropylene fiber modified by polyurethane and carbon fiber.
6. The exterior wall putty as set forth in claim 1, wherein: the preparation steps of the putty are as follows: 1) premixing the component A: adding PO42.5 cement, 400-mesh coarse whiting, 80-120-mesh quartz sand, hydroxyethyl cellulose and a high-efficiency water reducing agent into a stirrer, and uniformly mixing; 2) premixing the component B: adding deionized water into a stirrer, adding the elastic acrylic polymer emulsion, uniformly mixing, adding the antibacterial agent, and uniformly blending; 3) preparing putty: the component A and the component B are mixed according to the proportion of 100: and (5) mixing the components in the mass ratio of (5) to (15), and uniformly stirring to obtain the putty.
7. The exterior wall putty as set forth in claim 1, wherein: the high-efficiency water reducing agent is a sulfamate water reducing agent.
8. The exterior wall putty as set forth in claim 1, wherein: the antibacterial agent is a quaternary ammonium salt antibacterial agent.
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| CN202010480411.0A CN111560182A (en) | 2020-05-30 | 2020-05-30 | Exterior wall putty |
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| CN202010480411.0A CN111560182A (en) | 2020-05-30 | 2020-05-30 | Exterior wall putty |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113308140A (en) * | 2021-06-11 | 2021-08-27 | 李小泽 | Putty scraping in batches |
| CN115636624A (en) * | 2022-10-17 | 2023-01-24 | 重庆大学 | Coral powder repairing paste and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1532232A (en) * | 2003-03-24 | 2004-09-29 | 深圳市海川实业股份有限公司 | Double component anti-cracking outer wall putty |
| EP1492840A1 (en) * | 2002-04-10 | 2005-01-05 | Ciba SC Holding AG | Flame retardant coatings |
| CN101709170A (en) * | 2009-12-15 | 2010-05-19 | 江南大学 | Flexible putty of rubber powder and preparation method thereof |
| CN105949539A (en) * | 2016-05-16 | 2016-09-21 | 湖北洋田塑料制品有限公司 | Oil-resistant thermoplastic elastomer and preparation method |
| CN108610941A (en) * | 2018-05-18 | 2018-10-02 | 湖南千度新材料科技有限公司 | A kind of UV photocurings floor paint |
| CN110451887A (en) * | 2019-08-24 | 2019-11-15 | 深圳市交通工程试验检测中心有限公司 | Impervious anti-crack concrete and preparation method thereof |
| CN110804357A (en) * | 2019-11-18 | 2020-02-18 | 深圳陆城装饰设计工程有限公司 | Building exterior wall coating with good weather resistance and exterior wall coating construction process |
-
2020
- 2020-05-30 CN CN202010480411.0A patent/CN111560182A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1492840A1 (en) * | 2002-04-10 | 2005-01-05 | Ciba SC Holding AG | Flame retardant coatings |
| CN1532232A (en) * | 2003-03-24 | 2004-09-29 | 深圳市海川实业股份有限公司 | Double component anti-cracking outer wall putty |
| CN101709170A (en) * | 2009-12-15 | 2010-05-19 | 江南大学 | Flexible putty of rubber powder and preparation method thereof |
| CN105949539A (en) * | 2016-05-16 | 2016-09-21 | 湖北洋田塑料制品有限公司 | Oil-resistant thermoplastic elastomer and preparation method |
| CN108610941A (en) * | 2018-05-18 | 2018-10-02 | 湖南千度新材料科技有限公司 | A kind of UV photocurings floor paint |
| CN110451887A (en) * | 2019-08-24 | 2019-11-15 | 深圳市交通工程试验检测中心有限公司 | Impervious anti-crack concrete and preparation method thereof |
| CN110804357A (en) * | 2019-11-18 | 2020-02-18 | 深圳陆城装饰设计工程有限公司 | Building exterior wall coating with good weather resistance and exterior wall coating construction process |
Non-Patent Citations (3)
| Title |
|---|
| BISWAS, S: "《Comparative Evaluation of Bioactive Glass (Putty) and Platelet Rich Fibrin in Treating Furcation Defects》", 《JOURNAL OF ORAL IMPLANTOLOGY》 * |
| 曾作祥: "《普通高等教育"十二五"规划教材 界面现象》", 31 January 2016, 华东理工大学出版社 * |
| 王锡春: "《涂装技术 第1册 总论》", 31 May 1986, 化学工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113308140A (en) * | 2021-06-11 | 2021-08-27 | 李小泽 | Putty scraping in batches |
| CN115636624A (en) * | 2022-10-17 | 2023-01-24 | 重庆大学 | Coral powder repairing paste and preparation method thereof |
| CN115636624B (en) * | 2022-10-17 | 2023-12-15 | 重庆大学 | Coral powder repair cream and preparation method thereof |
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