CN112708062A - Polymer for concrete with glass powder as raw material and preparation method thereof - Google Patents
Polymer for concrete with glass powder as raw material and preparation method thereof Download PDFInfo
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- CN112708062A CN112708062A CN202011337534.5A CN202011337534A CN112708062A CN 112708062 A CN112708062 A CN 112708062A CN 202011337534 A CN202011337534 A CN 202011337534A CN 112708062 A CN112708062 A CN 112708062A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2688—Copolymers containing at least three different monomers
- C04B24/2694—Copolymers containing at least three different monomers containing polyether side chains
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/304—Air-entrainers
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention relates to the field of concrete admixtures, in particular to a polymer for concrete using glass powder as a raw material and a preparation method thereof. The polymer for the concrete with the glass powder as the raw material is a polyhydroxy high molecular compound with a hyperbranched structure, and when the polymer is applied to the concrete with the glass powder as the raw material, the polymer can effectively reduce or eliminate alkali aggregate reaction expansibility brought by the glass powder in the concrete, reduce the risk of alkali-silicon reaction (ASR) brought by the glass powder applied to the concrete, prevent the concrete from expanding and cracking, and ensure the durability of the concrete.
Description
Technical Field
The invention relates to the field of concrete admixtures, in particular to a polymer for concrete using glass powder as a raw material and a preparation method thereof.
Background
The waste glass powder is used as a concrete auxiliary cementing material or fine aggregate, has important ecological environmental benefit, economic benefit and technical benefit, and meets the strategic requirements of sustainable development of building materials in China.
Glass is amorphous, contains a large amount of silicon and calcium, theoretically has volcanic ash activity, can be used as a concrete admixture, but also brings alkali-silicon reaction (ASR) risk when being applied to concrete, so that the concrete is expanded and cracked, and the durability of the concrete is influenced. Therefore, it is very significant how to reduce the risk of alkali-silica reaction (ASR) caused by the application of the glass powder in concrete.
The invention discloses an invention patent with the patent application number of CN201510430048.0 and the publication number of 20151209 and discloses a preparation method of an active glass powder mixture, cement in a concrete mixture is replaced by fifty micron-sized active glass powder, and the concrete prepared from the active glass powder mixture can be obtained by 0.7-0.8 part of cement, 0.08-0.12 part of glass powder, 0.8-1 part of sand, 0.08-0.15 part of small pebble, 0.01-0.04 part of water reducing agent and 0.15-0.2 part of water. Among them, amorphous silica in glass has high alkali activity, and thus, alkali-silicon reaction occurs in concrete to destroy the structure. However, the glass powder having a particle size of 50 μm or less is used, and is uniformly distributed in the cement matrix material, so that the reaction of the pozzolan occurs, and thus the destruction is not caused.
Patent application No. CN201710554048.0, published as 20171117. The invention discloses a composite cementing material taking waste glass as a raw material and a preparation and modification method thereof, wherein 45 micron-sized waste glass powder is used for partially replacing cement, and the composite cementing material is prepared by the following steps of by mass: 10-35 parts of waste glass, 65-90 parts of cement, 30-50 parts of water and 0.5-5 parts of nano modifier to prepare the composite cementing material. The nano-silica is selected as the modifier of the composite cementing material, the nano-silica has higher reactivity, a certain amount of nano-material is doped into the cement-based material, the performance of the material can be improved, the strength development of the material is promoted, the hydration reaction process of a composite system is accelerated, and the defect of insufficient development of the early performance of a glass-doped powder system is relieved to a great extent by the promotion effect of the nano-silica on the setting and hardening of the material. However, the waste glass powder in the invention is also ground to 45 μm.
The patent application number is CN201210252060.3, the invention patent with publication number 20121024 discloses an ultrahigh-performance cement-based material and a preparation method thereof, and the weight ratio of the material components is as follows: 0.6-0.9 part of cement, 0.08-0.12 part of silica fume, 0.1-0.3 part of glass powder, 0.8-1.2 parts of sand, 0.05-0.15 part of steel fiber, 0.02-0.03 part of water reducing agent and 0.14-0.18 part of water. Because the glass powder particles are fine and are uniformly distributed in the ultrahigh-performance cement-based material, the glass powder particles can quickly generate volcanic ash reaction, and the ultrahigh-performance cement-based material cannot be damaged by alkali-aggregate reaction.
Therefore, in the prior art, the risk of alkali-silicon reaction (ASR) caused by the application of the glass powder in concrete is reduced by reducing the glass powder particles or adding the modified inorganic material, but the reduction of the glass powder particles requires higher energy consumption, increases the economic cost, and the improvement effect of adding the modified inorganic material is not obvious. Therefore, how to reduce the risk of alkali-silicon reaction (ASR) remains a major problem to be solved urgently when the glass powder is applied to concrete at present.
Disclosure of Invention
In order to solve the problem that the application of the glass powder in concrete causes damage to the concrete due to the risk of alkali-silica reaction (ASR), the invention provides a polymer for the concrete using the glass powder as a raw material, which has the structural formula as follows:
wherein the molecular weight is 50000-100000, n is in the range of 20-80, and m is more than 0.
The polymer for the concrete with the glass powder as the raw material is a hyperbranched air-entraining plasticizer which is a polyhydroxy high molecular compound with a hyperbranched structure and has low surface tension, so that the polymer has better foaming capacity and higher bubble liquid film strength, can generate fine and small bubbles in the concrete, can reduce or eliminate alkali aggregate reaction expansibility brought by the glass powder in the concrete, reduces the risk of alkali-silicon reaction (ASR) brought by the glass powder applied to the concrete, prevents the concrete from expanding and cracking, and ensures the durability of the concrete.
In addition, the polymer has water reducing and air entraining performances, does not need to be compounded with a water reducing agent for use, solves the problem of incompatibility of the water reducing agent and the air entraining agent, better improves the comprehensive performance of concrete, particularly reduces the risk of alkali-silicon reaction (ASR) caused by the application of glass powder in the concrete, and improves the durability of the concrete.
The invention also provides a preparation method of the polymer for the concrete taking the glass powder as the raw material, which comprises the following steps:
s100, reacting diethanolamine with fumaric acid to generate a monomer A; s200, reacting the monomer A with glycerol to generate a monomer B; s300, carrying out free radical copolymerization on the monomer B, acrylic acid and a polyether macromonomer to obtain a polymer product, namely a polymer for concrete taking glass powder as a raw material.
Among them, fumaric acid used is a trans-dicarboxylic acid, and the esterification reaction or amidation reaction is more efficient and the yield of the obtained monomer B is higher than that of a compound such as maleic anhydride.
On the basis of the scheme, the molar ratio of the diethanol amine to the fumaric acid to the glycerol is 1: (1-1.5): (0.1-0.3).
On the basis of the scheme, the S200 further comprises a catalyst, and the catalyst is p-toluenesulfonic acid.
On the basis of the above scheme, further, the reaction temperature in S200 is: 120 ℃ and 160 ℃.
On the basis of the scheme, the weight ratio of the monomer B, acrylic acid and the polyether macromonomer in the monomer 300 is as follows: (1-1.5): 1: 10.
on the basis of the scheme, the molecular weight of the polyether macromonomer is as follows: 2400-3000.
On the basis of the scheme, the S300 further comprises a molecular weight regulator. The molecular weight regulator may employ thioglycolic acid as the molecular weight regulator.
On the basis of the scheme, the S300 further comprises an initiator. The initiator can adopt a water-soluble redox initiation system, such as a hydrogen peroxide-sodium formaldehyde sulfoxylate and other common water-soluble redox initiation systems.
On the basis of the scheme, further, the S100 and the S200 are reacted under a nitrogen atmosphere.
The polymer for the concrete taking the glass powder as the raw material has the following effects: the alkali aggregate reaction expansibility brought by the glass powder in the concrete is effectively reduced or eliminated, the alkali-silicon reaction (ASR) risk brought by the glass powder applied to the concrete is reduced, the concrete is prevented from expansion cracking, and the durability of the concrete is ensured.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following description will clearly and completely describe the embodiments of the present invention, and obviously, the described embodiments are a part of the embodiments of the present invention, but not all 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 invention provides a preparation method of a polymer for concrete using glass powder as a raw material, which specifically comprises the following preparation steps:
(1) a certain amount of diethanol amine is dissolved in a three-mouth bottle, nitrogen is introduced, and a magnetic stirrer is started. Slowly dripping fumaric acid into a three-mouth bottle through a peristaltic pump, and reacting for 5-10h at room temperature after dripping is finished. After the completion of the reaction, the solvent and unreacted monomers were distilled off under reduced pressure using a rotary evaporator to obtain a monomer A.
(2) Pouring the monomer A obtained in the first step into a three-necked bottle, installing an experimental instrument, opening a magnetic stirrer and introducing nitrogen. Adding p-toluenesulfonic acid as a catalyst into a three-mouth bottle, slowly dripping glycerol into the three-mouth bottle by using a peristaltic pump, simultaneously heating to 160 ℃ at the same time, and after finishing dripping, keeping the temperature unchanged and continuing to react for 20-24 hours. The solvent and unreacted monomers were distilled off under reduced pressure using a rotary evaporator to obtain monomer B.
Wherein the molar ratio of the diethanol amine to the fumaric acid to the glycerol is 1: (1-1.5): (0.1-0.3).
(3) And (2) carrying out free radical copolymerization on the monomer B, acrylic acid and a polyether macromonomer to obtain a polymer: adding the monomer B, the polyether macromonomer mixed aqueous solution, the initiator aqueous solution, the molecular weight regulator aqueous solution and the acrylic acid aqueous solution into a reaction kettle for reaction to obtain a polymer, wherein the reaction temperature is 40 ℃. And (3) adjusting the pH value of the polymer obtained after the polymerization reaction to 7.0 by using an alkaline solution to obtain a polymer product, namely the polymer for the concrete taking the glass powder as the raw material.
Wherein the weight ratio of the monomer B, the acrylic acid and the polyether macromonomer is as follows: (1-1.5): 1: 10; the molecular weight of the polyether macromonomer is 2400-3000.
The invention also provides the following embodiments:
example 1:
(1) 1 mol of diethanolamine was poured into a three-necked flask, nitrogen was introduced, and the stirrer was switched on. Slowly dropwise adding 1 mol of fumaric acid into the three-necked bottle through a peristaltic pump, and reacting at room temperature for 5 hours after dropwise adding. After the reaction was completed, unreacted monomers were distilled off under reduced pressure using a rotary evaporator to obtain a monomer a.
(2) The monomer A obtained in the first step is poured into a three-necked bottle, the stirrer is opened, and nitrogen is introduced. Adding 1.0g of p-toluenesulfonic acid as a catalyst into a three-necked bottle, slowly dripping 0.1 mol of glycerol into the three-necked bottle by using a peristaltic pump, simultaneously starting heating to 120 ℃, and after the dripping is finished, keeping the temperature unchanged and continuing to react for 20 hours. Unreacted monomers were distilled off under reduced pressure using a rotary evaporator to obtain a monomer B.
(3) Adding 100g of methallyl alcohol polyoxyethylene ether with the molecular weight of 2400, 10g of monomer B and 100g of water into a reaction kettle together, adding 1g of hydrogen peroxide (initiation) and 100g of water into the reaction kettle together, controlling the temperature to be 40 ℃, dropwise adding a sodium formaldehyde sulfoxylate aqueous solution, a thioglycolic acid aqueous solution and an acrylic acid aqueous solution into the reaction kettle respectively within 3 hours while stirring, and preserving heat for 1 hour after dropwise adding to obtain a reaction product, wherein the concentration is controlled to be 50%; the pH of the reaction product is adjusted to 7.0 by sodium hydroxide to obtain a polymer product, namely a polymer for concrete taking glass powder as a raw material. (ii) a
Wherein the sodium formaldehyde sulfoxylate aqueous solution is prepared by dissolving 2.2g of sodium formaldehyde sulfoxylate in 150g of water; 0.5g of thioglycolic acid aqueous solution is dissolved in 150g of water; the acrylic acid aqueous solution was dissolved in 180g of water in an amount of 10g of acrylic acid solution.
(4) Weighing the raw materials, namely 5 parts of glass powder, 15 parts of cement, 50 parts of pebbles, 25 parts of machine-made sand, 5 parts of water and 0.02 part of prepared polymer product, putting the raw materials into a stirring pot, and uniformly stirring to obtain the concrete. Wherein the particle size of the glass powder is as follows: 100-500 μm.
Example 2
(1) 1 mol of diethanolamine was poured into a three-necked flask, nitrogen was introduced, and the stirrer was switched on. Slowly dropwise adding 1.2 mol of fumaric acid into the three-necked bottle through a peristaltic pump, and reacting at room temperature for 10 hours after dropwise adding. After the reaction was completed, unreacted monomers were distilled off under reduced pressure using a rotary evaporator to obtain a monomer a.
(2) The monomer A obtained in the first step is poured into a three-necked bottle, the stirrer is opened, and nitrogen is introduced. 1.5g of p-toluenesulfonic acid is added into a three-necked bottle as a catalyst, 0.3 mol of glycerol is slowly dripped into the three-necked bottle by using a peristaltic pump, heating is started to 150 ℃, and after the dripping is finished, the temperature is kept unchanged and the reaction is continued for 24 hours. Unreacted monomers were distilled off under reduced pressure using a rotary evaporator to obtain a monomer B.
(3) Adding 100g of methacrylic alcohol polyoxyethylene ether with the molecular weight of 3000, 15g of monomer B and 100g of water into a reaction kettle, adding 1.5g of hydrogen peroxide and 100g of water into the reaction kettle, controlling the temperature to be 40 ℃, respectively dropwise adding a sodium formaldehyde sulfoxylate aqueous solution, a thioglycolic acid aqueous solution and an acrylic acid aqueous solution within 3h while stirring, and preserving heat for 1h after dropwise adding to obtain a reaction product, wherein the concentration is controlled to be 50%; adjusting the pH value of the reaction product to 7.0 by using sodium hydroxide to obtain a polymer product, namely a polymer for concrete taking glass powder as a raw material;
wherein the sodium formaldehyde sulfoxylate aqueous solution is prepared by dissolving 2.2g of sodium formaldehyde sulfoxylate in 150g of water; 0.5g of thioglycolic acid aqueous solution is dissolved in 150g of water; the acrylic acid aqueous solution was dissolved in 180g of water in an amount of 10g of acrylic acid solution.
(4) Weighing the raw materials, namely 30 parts of glass powder, 20 parts of cement, 50 parts of pebbles, 5 parts of machine-made sand, 15 parts of water and 0.15 part of prepared polymer product, putting the raw materials into a stirring pot, and uniformly stirring to obtain the concrete. Wherein the particle size of the glass powder is as follows: 500-1000 μm.
Comparative example 1
Weighing the raw materials, including 5 parts by weight of glass powder, 15 parts by weight of cement, 50 parts by weight of pebbles, 25 parts by weight of machine-made sand, 5 parts by weight of water and 0.02 part by weight of common polycarboxylic acid water reducing agent Poi nt-MS, putting the raw materials into a stirring pot, and uniformly stirring to obtain the concrete. Wherein the particle size of the glass powder is as follows: 100-500 μm.
The concrete prepared in the examples and the concrete prepared in the comparative examples are respectively subjected to performance tests, and the test results are shown in table 1:
table 1: test results
The concrete in examples 1-2 is introduced into the polymer product for glass powder as raw material concrete, compared with comparative example 1, the concrete has lower 28d expansion rate and higher concrete strength, and the polymer can reduce or eliminate alkali aggregate reaction expansion force brought by the glass powder in the concrete, reduce the risk of alkali-silica reaction (ASR) brought by the glass powder applied in the concrete, prevent the concrete from expansion cracking and ensure the durability of the concrete.
And compared with the comparative example 1, the water reducing agent is not added in the examples, but the dispersing performance of the concrete is equivalent to that of the comparative example, and the initial slump of the examples is similar to that of the comparative example added with the water reducing agent, which shows that the prepared polymer has the water reducing performance. Therefore, the polymer prepared by the invention has the water reducing and air entraining performances, does not need to be compounded with a water reducing agent for use, solves the problem of incompatibility of the compounding of the water reducing agent and the air entraining agent, and better improves the comprehensive performance of concrete.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A polymer for concrete using glass powder as raw material is characterized in that: the structural formula is as follows:
wherein the molecular weight is 50000-100000, n is in the range of 20-80, and m is more than 0.
2. A method for preparing a polymer for a concrete using glass frit as a raw material according to claim 1, comprising: the method comprises the following steps:
s100, reacting diethanolamine with fumaric acid to generate a monomer A;
s200, reacting the monomer A with glycerol to generate a monomer B;
s300, carrying out free radical copolymerization on the monomer B, acrylic acid and a polyether macromonomer to obtain a polymer product, namely a polymer for concrete taking glass powder as a raw material.
3. The method for preparing a polymer for a concrete using glass frit as a raw material according to claim 2, wherein: the mol ratio of the diethanol amine to the fumaric acid to the glycerol is 1: (1-1.5): (0.1-0.3).
4. The method for preparing a polymer for a concrete using glass frit as a raw material according to claim 2, wherein: the S200 also comprises a catalyst, and the catalyst is p-toluenesulfonic acid.
5. The method for preparing a polymer for a concrete using glass frit as a raw material according to claim 2, wherein: the reaction temperature in the S200 is as follows: 120 ℃ and 160 ℃.
6. The method for preparing a polymer for a concrete using glass frit as a raw material according to claim 2, wherein: the weight ratio of the monomer B, the acrylic acid and the polyether macromonomer in the monomer 300 is as follows: (1-1.5): 1: 10.
7. the method for preparing a polymer for a concrete using glass frit as a raw material according to claim 2, wherein: the molecular weight of the polyether macromonomer is: 2400-3000.
8. The method for preparing a polymer for a concrete using glass frit as a raw material according to claim 2, wherein: the S300 also comprises a molecular weight regulator.
9. The method for preparing a polymer for a concrete using glass frit as a raw material according to claim 2, wherein: the S300 also comprises an initiator.
10. The method for preparing a polymer for a concrete using glass frit as a raw material according to claim 2, wherein: the S100 and the S200 are reacted under a nitrogen atmosphere.
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| CN109851274A (en) * | 2019-01-29 | 2019-06-07 | 济南大学 | A kind of preparation and application of hyperbranched type rosin air entraining agent |
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| CN103613306A (en) * | 2013-11-18 | 2014-03-05 | 济南大学 | Hyperbranched poly(amine-ester) structure-containing polycarboxylic water reducer and preparation method thereof |
| CN104355563A (en) * | 2014-09-28 | 2015-02-18 | 山东宏艺科技股份有限公司 | Hyperbranched polyester-polycarboxylate water reducing agent and preparation method for same |
| CN109206609A (en) * | 2018-09-04 | 2019-01-15 | 济南大学 | A kind of preparation and application of hyperbranched type polyethers air entraining agent |
| CN109851274A (en) * | 2019-01-29 | 2019-06-07 | 济南大学 | A kind of preparation and application of hyperbranched type rosin air entraining agent |
| CN111116844A (en) * | 2020-01-18 | 2020-05-08 | 广东汇强外加剂有限公司 | Air-entraining type polycarboxylate superplasticizer and preparation method thereof |
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