CN113233813A - High molecular powder adhesive capable of improving adhesive strength of cement and soil - Google Patents
High molecular powder adhesive capable of improving adhesive strength of cement and soil Download PDFInfo
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- CN113233813A CN113233813A CN202110608231.0A CN202110608231A CN113233813A CN 113233813 A CN113233813 A CN 113233813A CN 202110608231 A CN202110608231 A CN 202110608231A CN 113233813 A CN113233813 A CN 113233813A
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- cement
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
Abstract
The invention discloses a high molecular powder adhesive capable of improving the bonding strength of cement and soil, which comprises the following components in parts by weight: 3-10 parts of polyvinyl alcohol: 2-4 parts of a water reducing agent: 2-3 parts of polyurethane: 2-5 parts of sodium silicate: 5-10 parts of lignosulfonate: 1-3 parts, calcium stearate: 1-3 parts of super absorbent resin: 1-2 parts of a rust inhibitor: 5-7 parts of epoxy resin: 10-50 parts. The invention has the beneficial effects that: by adding the rust inhibitor, the allophanate, the polyvinyl alcohol and the water reducing agent, the application function of the cement soil is effectively improved, the corrosion to iron buildings is reduced, the cement soil has high durability, the using amount of the cement is reduced, the firmness of a cement diagram is improved, the water reducing agent has a dispersing effect on cement particles, the workability of the cement soil can be improved, the unit water consumption is reduced, the fluidity of a mixture is improved, the unit using amount of the cement is reduced, and the cement is saved.
Description
Technical Field
The invention relates to cement soil, in particular to a high molecular powder adhesive capable of improving the adhesive strength of cement and soil, belonging to the technical field of cement soil preparation.
Background
The cement and soil mixture is called as cement soil, the cement soil is made from local extra fine sand (from windage or river dredging) or sandy loam as main raw material, a small amount of cement (accounting for 10% -15% of the total amount) is added, a proper amount of adhesive and water are uniformly stirred, special mechanical equipment is adopted to press the mixture into plates with different specifications, and the plates can be used as building materials after being watered and maintained for a period of time, but the existing adhesive has the following defects:
the existing adhesive is mostly liquid, the cement soil is added to be stirred inconveniently, the mixing degree is poor, the hardness of the cement soil obtained after the existing adhesive is used is low, and the functions are few.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a polymer powder binder which can improve the bonding strength between cement and soil.
The invention achieves the aim through the following technical scheme, namely a high-molecular powdery adhesive capable of improving the bonding strength of cement and soil, which comprises allophanate in parts by weight: 3-10 parts of polyvinyl alcohol: 2-4 parts of a water reducing agent: 2-3 parts of polyurethane: 2-5 parts of sodium silicate: 5-10 parts of lignosulfonate: 1-3 parts, calcium stearate: 1-3 parts of super absorbent resin: 1-2 parts of a rust inhibitor: 5-7 parts of epoxy resin: 10-50 parts.
Preferably, the water reducing agent is casein, and the purity of the water reducing agent is 98%.
Preferably, the purity of the sodium silicate is 99%, and the sodium silicate is ground and screened by a 120-mesh screen.
Preferably, the allophanate has a purity of 98%.
Preferably, the rust inhibitor is RJS-3 concrete rust inhibitor.
Preferably, the purity of the lignosulfonate is 90% -95%.
Preferably, the purity of the epoxy resin is 80%, and the epoxy resin is crushed and screened to be 120 meshes.
Preferably, the high molecular powder adhesive capable of improving the bonding strength of cement and soil is a use method of the high molecular powder adhesive capable of improving the bonding strength of cement and soil, and the use method comprises the following steps:
(1) preparing materials, namely proportioning the raw materials in proportion to obtain a mixture;
(2) adding the prepared raw material mixture into a stirrer, and fully stirring and mixing to obtain a powdery adhesive;
(3) adding the mixture into a proper amount of soil and cement according to the proportion of 1:10:0.3 of the cement, the soil and the adhesive, and uniformly stirring;
(4) then adding a proper amount of water and continuously stirring to obtain cement soil, and putting the cement soil into a special block making machine to be pressed into a mud plate.
Preferably, the stirring in the step (2) is performed by using a special electric stirrer, and the stirring time is 10min to 15 min.
Preferably, the water content of the soil in the step (3) is 1% -5%, and the stirring time is 10-15 min.
The invention has the beneficial effects that:
(1) by adding the rust inhibitor, the allophanate, the polyvinyl alcohol and the water reducing agent, the application function of the cement soil is effectively improved, the corrosion to iron buildings is reduced, the cement soil has high durability, the using amount of the cement is reduced, the firmness of a cement diagram is improved, the water reducing agent has a dispersing effect on cement particles, the workability of the cement soil can be improved, the unit water consumption is reduced, the fluidity of a mixture is improved, the unit using amount of the cement is reduced, and the cement is saved.
(2) According to the invention, the epoxy resin, the allophanate, the polyvinyl alcohol, the water reducing agent, the polyurethane, the sodium silicate, the lignosulfonate, the calcium stearate, the super absorbent resin and the rust remover are added to be solid or flocculent, so that the addition is convenient, the stirring and mixing are more uniform, and the operation flow is simple.
Drawings
FIG. 1 is a flow chart of a method of use of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1, a high molecular weight powder adhesive for improving the bonding strength between cement and soil comprises allophanate: 3-10 parts of polyvinyl alcohol: 2-4 parts of a water reducing agent: 2-3 parts of polyurethane: 2-5 parts of sodium silicate: 5-10 parts of lignosulfonate: 1-3 parts, calcium stearate: 1-3 parts of super absorbent resin: 1-2 parts of a rust inhibitor: 5-7 parts of epoxy resin: 10 to 50 portions of polyvinyl alcohol which is an organic compound with a chemical formula of [ C2H4O ] n, is a white flaky, flocculent or powdery solid in appearance, is tasteless, is a cement reinforcing agent, and is an additive with hardening speed and strength increasing speed at different temperatures.
The concrete admixture is characterized in that the water reducing agent is casein, the purity of the water reducing agent is 98%, the water reducing agent is a concrete admixture capable of reducing the mixing water consumption under the condition of keeping the concrete slump constant basically, most of the water reducing agent belongs to anionic surfactants, and the water reducing agent comprises lignosulfonate, naphthalene sulfonate formaldehyde polymer and the like, has a dispersing effect on cement particles when added into cement soil, can improve the workability, reduce the unit water consumption, improve the fluidity of a mixture, reduce the unit cement consumption and save cement.
Specifically, the purity of the sodium silicate is 99%, the sodium silicate is crushed and screened by a 120-mesh screen, the sodium silicate is commonly called sodium silicate, is an inorganic substance and has a chemical formula of Na 2O. nSiO2, and the aqueous solution of the sodium silicate is commonly called water glass and is an ore binder.
Specifically, the purity of the allophanate is 98%, and allophanate is an isocyanurate type polyisocyanate composition derived from an aliphatic diisocyanate monomer and an alcohol, and the crystallinity of a soft segment has a large influence on the mechanical strength and modulus of the final polyurethane, and particularly, when the polyurethane is stretched, the greater the degree of crystallization (segmental regularization) due to stress, the greater the tensile strength, and in polyether or polyester, the regularity of a segmental structural unit influences the crystallinity of PU, and the smaller the pendant group, the greater the number of methylene groups between ether groups or ester bonds, and the higher the crystallinity, and the higher the crystallinity, so that the polytetrahydrofuran type polyurethane has higher mechanical strength and adhesive strength than polyoxypropylene type polyurethane.
Specifically, the rust inhibitor is RJS-3 concrete rust inhibitor, RJS-3 concrete rust inhibitor can efficiently resist rust, the rust inhibitor is an additive solid agent, and the rust inhibitor can be mixed with cement soil and stirred when in use.
Specifically, the purity of the lignosulfonate is 90% -95%, the lignosulfonate is a multi-component high-molecular polymer anionic surfactant extracted from wood, is a brown yellow powdery substance in appearance, has aromatic smell and a molecular weight of generally 800-100000, has strong dispersibility, cohesiveness and chelating property, and is widely used as a cement water reducing agent.
Specifically, the purity of the epoxy resin is 80%, the epoxy resin is 120 meshes after being crushed and screened, the epoxy resin is a high molecular polymer, the molecular formula is (C11H12O3) n, the molecular formula is a generic name of a polymer containing more than two epoxy groups in a molecule, the polymer is a condensation product of epichlorohydrin and bisphenol A or polyhydric alcohol, and due to the chemical activity of the epoxy groups, a plurality of compounds containing active hydrogen can be used for ring opening, curing and crosslinking to generate a network structure, so the epoxy resin is a thermosetting resin.
A method for using a high molecular powder adhesive for improving the bonding strength of cement and soil comprises the following steps:
(1) and (3) preparing materials, and proportioning the raw materials in proportion to obtain a mixture.
(2) And adding the prepared raw material mixture into a stirrer, and fully stirring and mixing to obtain the powdery adhesive.
(3) Adding the mixture into a proper amount of soil and cement according to the proportion of 1:10:0.3 of the cement, the soil and the adhesive, and uniformly stirring.
(4) Then adding a proper amount of water and continuously stirring to obtain cement soil, and putting the cement soil into a special block making machine to be pressed into a mud plate.
Specifically, the stirring in the step (2) adopts a special electric stirrer for stirring, and the stirring time is 10min-15 min.
Specifically, the water content of the soil in the step (3) is 5%, and the stirring time is 15 min.
The above is an example where the soil has a water content of 5%.
Example two:
referring to fig. 1, a high molecular weight powder adhesive for improving the bonding strength between cement and soil comprises allophanate: 3-10 parts of polyvinyl alcohol: 2-4 parts of a water reducing agent: 2-3 parts of polyurethane: 2-5 parts of sodium silicate: 5-10 parts of lignosulfonate: 1-3 parts, calcium stearate: 1-3 parts of super absorbent resin: 1-2 parts of a rust inhibitor: 5-7 parts of epoxy resin: 10 to 50 portions of polyvinyl alcohol which is an organic compound with a chemical formula of [ C2H4O ] n, is a white flaky, flocculent or powdery solid in appearance, is tasteless, is a cement reinforcing agent, and is an additive with hardening speed and strength increasing speed at different temperatures.
The concrete admixture is characterized in that the water reducing agent is casein, the purity of the water reducing agent is 98%, the water reducing agent is a concrete admixture capable of reducing the mixing water consumption under the condition of keeping the concrete slump constant basically, most of the water reducing agent belongs to anionic surfactants, and the water reducing agent comprises lignosulfonate, naphthalene sulfonate formaldehyde polymer and the like, has a dispersing effect on cement particles when added into cement soil, can improve the workability, reduce the unit water consumption, improve the fluidity of a mixture, reduce the unit cement consumption and save cement.
Specifically, the purity of the sodium silicate is 99%, the sodium silicate is crushed and screened by a 120-mesh screen, the sodium silicate is commonly called sodium silicate, is an inorganic substance and has a chemical formula of Na 2O. nSiO2, and the aqueous solution of the sodium silicate is commonly called water glass and is an ore binder.
Specifically, the purity of the allophanate is 98%, and allophanate is an isocyanurate type polyisocyanate composition derived from an aliphatic diisocyanate monomer and an alcohol, and the crystallinity of a soft segment has a large influence on the mechanical strength and modulus of the final polyurethane, and particularly, when the polyurethane is stretched, the greater the degree of crystallization (segmental regularization) due to stress, the greater the tensile strength, and in polyether or polyester, the regularity of a segmental structural unit influences the crystallinity of PU, and the smaller the pendant group, the greater the number of methylene groups between ether groups or ester bonds, and the higher the crystallinity, and the higher the crystallinity, so that the polytetrahydrofuran type polyurethane has higher mechanical strength and adhesive strength than polyoxypropylene type polyurethane.
Specifically, the rust inhibitor is RJS-3 concrete rust inhibitor, RJS-3 concrete rust inhibitor can efficiently resist rust, the rust inhibitor is an additive solid agent, and the rust inhibitor can be mixed with cement soil and stirred when in use.
Specifically, the purity of the lignosulfonate is 90% -95%, the lignosulfonate is a multi-component high-molecular polymer anionic surfactant extracted from wood, is a brown yellow powdery substance in appearance, has aromatic smell and a molecular weight of generally 800-100000, has strong dispersibility, cohesiveness and chelating property, and is widely used as a cement water reducing agent.
Specifically, the purity of the epoxy resin is 80%, the epoxy resin is 120 meshes after being crushed and screened, the epoxy resin is a high molecular polymer, the molecular formula is (C11H12O3) n, the molecular formula is a generic name of a polymer containing more than two epoxy groups in a molecule, the polymer is a condensation product of epichlorohydrin and bisphenol A or polyhydric alcohol, and due to the chemical activity of the epoxy groups, a plurality of compounds containing active hydrogen can be used for ring opening, curing and crosslinking to generate a network structure, so the epoxy resin is a thermosetting resin.
A method for using a high molecular powder adhesive for improving the bonding strength of cement and soil comprises the following steps:
(1) and (3) preparing materials, and proportioning the raw materials in proportion to obtain a mixture.
(2) And adding the prepared raw material mixture into a stirrer, and fully stirring and mixing to obtain the powdery adhesive.
(3) Adding the mixture into a proper amount of soil and cement according to the proportion of 1:10:0.3 of the cement, the soil and the adhesive, and uniformly stirring.
(4) Then adding a proper amount of water and continuously stirring to obtain cement soil, and putting the cement soil into a special block making machine to be pressed into a mud plate.
Specifically, the stirring in the step (2) adopts a special electric stirrer for stirring, and the stirring time is 10min-15 min.
Specifically, the water content of the soil in the step (3) is 2%, and the stirring time is 10 min.
The above is an example of soil having a water content of 2%.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A high molecular powder adhesive capable of improving the adhesive strength of cement and soil is characterized in that: comprises allophanate in parts by weight: 3-10 parts of polyvinyl alcohol: 2-4 parts of a water reducing agent: 2-3 parts of polyurethane: 2-5 parts of sodium silicate: 5-10 parts of lignosulfonate: 1-3 parts, calcium stearate: 1-3 parts of super absorbent resin: 1-2 parts of a rust inhibitor: 5-7 parts of epoxy resin: 10-50 parts.
2. The high molecular powder adhesive for improving the bonding strength between cement and soil as claimed in claim 1, wherein: the water reducing agent is casein, and the purity of the water reducing agent is 98%.
3. The high molecular powder adhesive for improving the bonding strength between cement and soil as claimed in claim 1, wherein: the purity of the sodium silicate is 99%, and the sodium silicate is screened by a 120-mesh screen after being crushed.
4. The high molecular powder adhesive for improving the bonding strength between cement and soil as claimed in claim 1, wherein: the allophanate has a purity of 98%.
5. The high molecular powder adhesive for improving the bonding strength between cement and soil as claimed in claim 1, wherein: the rust inhibitor is RJS-3 concrete rust inhibitor.
6. The high molecular powder adhesive for improving the bonding strength between cement and soil as claimed in claim 1, wherein: the purity of the lignosulfonate is 90-95%.
7. The high molecular powder adhesive for improving the bonding strength between cement and soil as claimed in claim 1, wherein: the purity of the epoxy resin is 80%, and the epoxy resin is crushed and screened to be 120 meshes.
8. The method for using high molecular powder adhesive for improving the bonding strength of cement and soil according to any one of claims 1 to 7, which comprises the following steps: the using method comprises the following steps:
(1) preparing materials, namely proportioning the raw materials in proportion to obtain a mixture;
(2) adding the prepared raw material mixture into a stirrer, and fully stirring and mixing to obtain a powdery adhesive;
(3) adding the mixture into a proper amount of soil and cement according to the proportion of 1:10:0.3 of the cement, the soil and the adhesive, and uniformly stirring;
(4) then adding a proper amount of water and continuously stirring to obtain cement soil, and putting the cement soil into a special block making machine to be pressed into a mud plate.
9. The method of using high molecular weight powdered adhesive for improving the bonding strength between cement and soil as claimed in claim 8, wherein: and (3) stirring in the step (2) by adopting a special electric stirrer for 10-15 min.
10. The method of using high molecular weight powdered adhesive for improving the bonding strength between cement and soil as claimed in claim 8, wherein: in the step (3), the water content of the soil is 1% -5%, and the stirring time is 10-15 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110608231.0A CN113233813A (en) | 2021-06-01 | 2021-06-01 | High molecular powder adhesive capable of improving adhesive strength of cement and soil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110608231.0A CN113233813A (en) | 2021-06-01 | 2021-06-01 | High molecular powder adhesive capable of improving adhesive strength of cement and soil |
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| CN113233813A true CN113233813A (en) | 2021-08-10 |
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| CN202110608231.0A Withdrawn CN113233813A (en) | 2021-06-01 | 2021-06-01 | High molecular powder adhesive capable of improving adhesive strength of cement and soil |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105602571A (en) * | 2015-12-29 | 2016-05-25 | 吕贵松 | Polymer soil solidifier |
| CN106497575A (en) * | 2016-11-09 | 2017-03-15 | 冯晋 | A kind of environment protection type soil solidifying agent |
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2021
- 2021-06-01 CN CN202110608231.0A patent/CN113233813A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105602571A (en) * | 2015-12-29 | 2016-05-25 | 吕贵松 | Polymer soil solidifier |
| CN106497575A (en) * | 2016-11-09 | 2017-03-15 | 冯晋 | A kind of environment protection type soil solidifying agent |
Non-Patent Citations (1)
| Title |
|---|
| 曾晓鹰等: "《电子束固化涂料及应用》", 31 December 2014, 天津大学出版社 * |
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Application publication date: 20210810 |