CN118126658A - Composite adhesive for preparing industrial briquette and preparation method thereof - Google Patents
Composite adhesive for preparing industrial briquette and preparation method thereof Download PDFInfo
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- CN118126658A CN118126658A CN202410189474.9A CN202410189474A CN118126658A CN 118126658 A CN118126658 A CN 118126658A CN 202410189474 A CN202410189474 A CN 202410189474A CN 118126658 A CN118126658 A CN 118126658A
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- 239000000853 adhesive Substances 0.000 title claims abstract description 157
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 157
- 239000002131 composite material Substances 0.000 title claims abstract description 74
- 239000004484 Briquette Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 31
- -1 modified acrylic ester Chemical class 0.000 claims abstract description 54
- 239000011347 resin Substances 0.000 claims abstract description 51
- 229920005989 resin Polymers 0.000 claims abstract description 51
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 51
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 42
- 239000000945 filler Substances 0.000 claims abstract description 34
- 239000004014 plasticizer Substances 0.000 claims abstract description 34
- 239000004814 polyurethane Substances 0.000 claims abstract description 34
- 229920002635 polyurethane Polymers 0.000 claims abstract description 34
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229920002367 Polyisobutene Polymers 0.000 claims abstract description 29
- 238000002156 mixing Methods 0.000 claims abstract description 27
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003381 stabilizer Substances 0.000 claims abstract description 17
- MGJKQDOBUOMPEZ-UHFFFAOYSA-N N,N'-dimethylurea Chemical compound CNC(=O)NC MGJKQDOBUOMPEZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims description 45
- 239000000203 mixture Substances 0.000 claims description 41
- 238000006243 chemical reaction Methods 0.000 claims description 33
- 238000010438 heat treatment Methods 0.000 claims description 27
- 239000012752 auxiliary agent Substances 0.000 claims description 19
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 15
- 239000011230 binding agent Substances 0.000 claims description 14
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000007334 copolymerization reaction Methods 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 3
- 239000012964 benzotriazole Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- HJIAMFHSAAEUKR-UHFFFAOYSA-N (2-hydroxyphenyl)-phenylmethanone Chemical compound OC1=CC=CC=C1C(=O)C1=CC=CC=C1 HJIAMFHSAAEUKR-UHFFFAOYSA-N 0.000 claims description 2
- SKDGWNHUETZZCS-UHFFFAOYSA-N 2,3-ditert-butylphenol Chemical compound CC(C)(C)C1=CC=CC(O)=C1C(C)(C)C SKDGWNHUETZZCS-UHFFFAOYSA-N 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 19
- 238000002485 combustion reaction Methods 0.000 abstract description 18
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 229920001577 copolymer Polymers 0.000 description 8
- 239000012855 volatile organic compound Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 3
- 125000003342 alkenyl group Chemical group 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 125000005396 acrylic acid ester group Chemical group 0.000 description 2
- 238000007259 addition reaction Methods 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 125000003354 benzotriazolyl group Chemical group N1N=NC2=C1C=CC=C2* 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000001951 carbamoylamino group Chemical group C(N)(=O)N* 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 125000006353 oxyethylene group Chemical group 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 125000005498 phthalate group Chemical group 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
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
- 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
- C09J151/08—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 macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to the technical field of briquette preparation, in particular to a composite adhesive for industrial briquette preparation and a preparation method thereof. The composite adhesive is formed by mixing an environment-friendly adhesive, a plasticizer and a filler, wherein the environment-friendly adhesive is formed by mixing a polyurethane adhesive and polyisobutene alcohol; wherein the thermosetting resin comprises the following components: 20 to 35 parts by weight of dimethyl urea, 10 to 15 parts by weight of formaldehyde, 0.2 to 1 part by weight of sodium hydroxide, 0.1 to 2 parts by weight of alumina, 10 to 20 parts by weight of modified acrylic ester and 0.1 to 0.6 part by weight of stabilizer. The composite adhesive prepared by adopting the thermosetting resin prepared by the modified acrylic ester and adding the environment-friendly adhesive prepared by mixing the polyurethane adhesive and the polyisobutene alcohol can effectively reduce the water content of the molded coal and effectively and obviously reduce the combustion pollutants of the molded coal.
Description
Technical Field
The invention relates to the technical field of briquette preparation, in particular to a composite adhesive for industrial briquette preparation and a preparation method thereof.
Background
Industrial briquette is generally coal processed for various industrial applications such as energy production, chemical industry, etc., and a composite binder is a substance capable of binding particulate materials together, and in the course of coal preparation, the binder may be used to improve physical properties of coal, to increase combustion efficiency, or to prepare coal products of a specific shape.
Then, the industrial briquette needs to be stored for a long time or used in a wet environment, which may cause moisture absorption of the coal, so that the water content of the coal increases, and the combustion efficiency of the high-water-content industrial briquette is low, which may cause incomplete combustion and increase of particulate matter emission of the coal, and in view of this, we propose a composite binder for industrial briquette preparation and a preparation method thereof.
Disclosure of Invention
The invention aims to provide a composite adhesive for preparing industrial briquette and a preparation method thereof, which are used for solving the problems that the moisture content of the coal is increased due to the wet environment in the background technology, the combustion efficiency of the industrial briquette with high water content is low, incomplete combustion is caused, and the emission of the coal particles is increased.
In order to achieve the above purpose, the invention provides a composite adhesive for preparing industrial molded coal, which is formed by mixing an environment-friendly adhesive, a plasticizer and a filler, wherein the composite adhesive is formed by taking thermosetting resin as a carrier, and the environment-friendly adhesive is formed by mixing a polyurethane adhesive and polyisobutene alcohol;
Wherein the thermosetting resin comprises the following components:
20 to 35 parts by weight of dimethyl urea, 10 to 15 parts by weight of formaldehyde, 0.2 to 1 part by weight of sodium hydroxide, 0.1 to 2 parts by weight of alumina, 10 to 20 parts by weight of modified acrylic ester and 0.1 to 0.6 part by weight of stabilizer.
Preferably, the composite adhesive comprises the following specific components:
70-85 parts of thermosetting resin, 15-25 parts of environment-friendly adhesive, 0.1-3 parts of plasticizer and 2-5 parts of filler;
wherein, the mixing ratio of the polyurethane adhesive and the polyisobutene alcohol in the environment-friendly adhesive is 1:0.4-0.6.
Preferably, the plasticizer is any one of phthalate, phosphate or fatty acid ester;
the filler is any one or more of tar, carbon black, silicate, alumina and aluminum sulfate.
Preferably, the stabilizer is any one of tin di-n-butyl diisobutyrate, di-tert-butylphenol or polydimethylsiloxane.
Preferably, the modified acrylate comprises the following components:
40 to 60 parts of butyl acrylate, 20 to 40 parts of polyoxyethylene methyl ether, 0.1 to 1.5 parts of p-toluenesulfonic acid and 0.05 to 0.1 part of auxiliary agent; wherein, the polyoxyethylene methyl ether is copolymerized with butyl acrylate to obtain the modified acrylic ester with higher viscosity and good water resistance.
Preferably, the preparation steps of the modified acrylic ester specifically include:
S5.1, placing 40-60 parts by weight of butyl acrylate and 20-40 parts by weight of polyoxyethylene methyl ether into a stirrer, adding 0.1-1.5 parts by weight of p-toluenesulfonic acid, starting the stirrer, and stirring for 30min at the speed of 450 rpm; ensuring that the p-toluenesulfonic acid is uniformly dispersed in the mixture of butyl acrylate and polyoxyethylene methyl ether;
s5.2, sealing the stirrer, and carrying out copolymerization reaction at the temperature of 80 ℃; in the reaction process, keeping the stirrer sealed to maintain the inert atmosphere of the reaction system and prevent impurities from entering;
S5.3, when a high molecular chain is gradually formed in the copolymerization reaction, adding 0.05-0.1 part by weight of an auxiliary agent, stirring for 5min at 80rpm to ensure that the auxiliary agent is uniformly dispersed in a reaction system, wherein the addition of the auxiliary agent can adjust the performances of the adhesive, such as viscosity, water resistance and the like, and the specific addition time of the auxiliary agent depends on the type of the used auxiliary agent and the influence of the auxiliary agent on the reaction;
S5.4, after the reaction is finished, cooling the reaction vessel to room temperature to obtain the modified acrylic ester.
Preferably, the auxiliary agent is any one of benzotriazole or hydroxybenzophenone.
In another aspect, the present invention provides a method for preparing a composite binder for preparing industrial briquette, for preparing the composite binder for preparing industrial briquette according to any one of the above steps, comprising the steps of:
S8.1, placing 70-85 parts by weight of thermosetting resin into a reaction kettle, and heating to a molten state;
S8.2, the polyurethane adhesive and polyisobutene alcohol are mixed according to the following ratio of 1: mixing uniformly in a proportion of 0.4-0.6 to form an environment-friendly adhesive;
S8.3, gradually adding 15-25 parts by weight of the environment-friendly adhesive into the melted thermosetting resin, and stirring at the same time to ensure that the two are fully mixed;
S8.4, gradually adding 0.3 part by weight of plasticizer into the mixture, and uniformly stirring to enable the plasticizer to be fully dissolved in the mixture;
S8.5, adding 2 parts by weight of filler into the mixture, continuously stirring to ensure that the filler is uniformly distributed in the adhesive, continuously heating and stirring the whole mixture to ensure that the adhesive components are fully mixed;
And S8.6, closing the heating equipment, and cooling the composite adhesive to room temperature to obtain the composite adhesive.
Preferably, in S8.1, the heating temperature of the reaction vessel is 180 to 200 ℃.
Preferably, the stirring speed of the reaction kettle is 60-450rpm.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the composite adhesive for preparing the industrial molded coal and the preparation method thereof, the thermosetting resin prepared from the modified acrylic ester is added, and the environment-friendly adhesive prepared from the polyurethane adhesive and the polyisobutene alcohol is added, so that the water content of the molded coal can be effectively reduced, and the combustion pollutants of the molded coal can be effectively and obviously reduced.
2. The agent is formed by mixing a polyurethane adhesive and polyisobutene alcohol, the polyurethane adhesive can improve the adhesiveness between a copolymer of butyl acrylate and polyoxyethylene methyl ether in modified acrylic ester and different surfaces, an isocyanate group in the polyurethane adhesive is subjected to an addition reaction with an alkenyl group in the copolymer, and an amino group is introduced, so that a new crosslinking point is introduced, and the strength and adhesiveness of the copolymer are improved.
Detailed Description
The following description of the embodiments of the present invention will clearly and fully describe the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention relates to a composite adhesive for preparing industrial molded coal, which is formed by mixing an environment-friendly adhesive, a plasticizer and a filler, wherein the composite adhesive is formed by mixing a polyurethane adhesive and polyisobutene alcohol;
and the composite adhesive comprises the following components in detail:
70-85 parts of thermosetting resin, 15-25 parts of environment-friendly adhesive, 0.1-3 parts of plasticizer and 2-5 parts of filler;
wherein, the mixing ratio of the polyurethane adhesive and the polyisobutene alcohol in the environment-friendly adhesive is 1:0.4-0.6.
In the environment-friendly adhesive, polyurethane is a polymer material formed by the reaction of isocyanate and polyol, and the reaction can generate ether bond (-O-) and blocked ureido (-NH-CO-O-) structures to form polyurethane chains, so that less harmful gas is possibly generated during the combustion of the polyurethane, the air pollution is reduced, the harmful gas generated during the combustion is reduced, and the combustion stability is improved.
Further, polyisobutene alcohol is generally a relatively environmentally friendly compound because it is free of Volatile Organic Compounds (VOCs) and solvents, and by mixing with polyurethane adhesives, more environmentally friendly adhesives can be prepared with reduced adverse environmental impact;
The adhesion of the polyisobutene alcohol is good, and the adhesion force of the polyisobutene alcohol to different surfaces can be improved in the adhesive; is beneficial to improving the bonding performance of the environment-friendly polyurethane adhesive in various applications.
Further, the plasticizer is preferably phthalate; the filler is preferably a mixture of tar, silicate and alumina;
Specifically, the thermosetting resin comprises the following components:
20 to 35 parts by weight of dimethyl urea, 10 to 15 parts by weight of formaldehyde, 0.2 to 1 part by weight of sodium hydroxide, 0.1 to 2 parts by weight of alumina, 10 to 20 parts by weight of modified acrylic ester and 0.1 to 0.6 part by weight of stabilizer; the stabilizer is preferably tin di-n-butyl diisobutyrate.
The thermosetting resin can be used as a binder of industrial molded coal, and is used for fixing raw material particles or granular materials together, so that a firm fuel block is formed, the density and mechanical strength of the coal are improved, and the handling and storage of the coal are improved. By adding the appropriate thermosetting resin to the feedstock, the coal formation process can be more easily controlled.
The modified acrylic ester is introduced with a functional group with hydrophilic property and an ether group (-O-), so that the interaction between polymer molecules and water molecules can be increased, the water resistance can be improved, and the property of the polymer can be adjusted, so that the modified acrylic ester is more suitable for a humid environment.
And the modified acrylate comprises the following components:
40 to 60 parts by weight of butyl acrylate, 20 to 40 parts by weight of polyoxyethylene methyl ether, 0.1 to 1.5 parts by weight of p-toluenesulfonic acid and 0.05 to 0.1 part by weight of auxiliary agent, wherein the auxiliary agent is preferably benzotriazole; and copolymerizing the oxyethyl methyl ether and butyl acrylate to obtain the modified acrylic ester with higher viscosity and good water resistance.
Further, the preparation steps of the modified acrylic ester specifically include:
S5.1, placing 60 parts by weight of butyl acrylate and 35 parts by weight of polyoxyethylene methyl ether into a stirrer, adding 0.2 part by weight of p-toluenesulfonic acid, starting the stirrer, and stirring for 30min at the speed of 450 rpm; ensuring that the p-toluenesulfonic acid is uniformly dispersed in the mixture of butyl acrylate and polyoxyethylene methyl ether;
s5.2, sealing the stirrer, and carrying out copolymerization reaction at the temperature of 80 ℃; in the reaction process, keeping the stirrer sealed to maintain the inert atmosphere of the reaction system and prevent impurities from entering;
S5.3, when a high polymer chain is gradually formed in the copolymerization reaction, adding 0.06 part by weight of an auxiliary agent, stirring for 5min at 80rpm to ensure that the auxiliary agent is uniformly dispersed in a reaction system, wherein the addition of the auxiliary agent can adjust the performances of the adhesive, such as viscosity, water resistance and the like, and the specific addition time of the auxiliary agent depends on the type of the auxiliary agent and the influence of the auxiliary agent on the reaction;
S5.4, after the reaction is finished, cooling the reaction vessel to room temperature to obtain the modified acrylic ester.
Specifically, butyl acrylate and polyoxyethylene methyl ether are copolymerized to form a composite polymer, and the structure of the polymer leads to cross linking of molecular chains, so that the overall molecular weight and viscosity are increased; the polyoxyethylene methyl ether provides better water resistance for the modified acrylic ester, and the existence of the oxyethylene group can increase the hydrophilicity of molecules, so that the permeation speed of water molecules into the material is slowed down; the modified acrylate may have a higher molecular weight, a crosslinked structure, and a better moisture barrier property, and thus may exhibit higher viscosity and water resistance.
Still further, the addition of the polyurethane adhesive can improve the adhesion of the copolymer of butyl acrylate and polyoxyethylene methyl ether to different surfaces, wherein the polyurethane adhesive comprises isocyanate groups, the isocyanate groups and alkenyl groups (c=c) in the copolymer undergo an addition reaction, and amino groups are introduced, so that new crosslinking points are introduced, and the strength and the adhesion of the copolymer can be improved;
the interaction of hydrogen bonds and van der Waals forces in the polyurethane adhesive with the alkenyl functional groups in the copolymer can enhance the adhesion between the copolymer and the surface and improve the adhesion.
The good adhesion properties help to firmly adhere the briquette to the surface of the furnace wall or the combustion apparatus during the combustion of the briquette. The combustion efficiency is improved, the molded coal is ensured to fully participate in the reaction during combustion, and the generation of waste materials is reduced;
and the improvement of the adhesiveness can improve the stability of the molded coal in the transportation, storage and use processes. Stable briquette is not easy to fall off or decompose, thereby reducing the generation of dust and waste;
the good adhesiveness can reduce the scattering of the molded coal in the transportation and use processes and reduce the risk of environmental pollution. Poor adhesion can lead to fracture or drift of the briquette, making dust prone to air or water ingress, affecting the surrounding environment.
Furthermore, the good adhesiveness is favorable for uniformly distributing the molded coal in the combustion equipment, improving the combustion characteristics, avoiding the generation of local overheating or supercooling areas and improving the energy utilization efficiency.
Example 1
The preparation method of the composite adhesive for preparing the industrial briquette comprises the following steps:
s8.1, placing 80 parts by weight of thermosetting resin into a reaction kettle, heating to a molten state,
Wherein the thermosetting resin comprises the following components:
30 parts of dimethyl urea, 12 parts of formaldehyde, 0.3 part of sodium hydroxide, 0.1 part of alumina, 10 parts of modified acrylic ester and 0.2 part of stabilizer;
S8.2, the polyurethane adhesive and polyisobutene alcohol are mixed according to the following ratio of 1: mixing uniformly in a proportion of 0.5 to form an environment-friendly adhesive;
S8.3, gradually adding 20 parts by weight of the environment-friendly adhesive into the melted thermosetting resin, and stirring at the same time to ensure that the two are fully mixed;
S8.4, gradually adding 0.3 part by weight of plasticizer into the mixture, and uniformly stirring to enable the plasticizer to be fully dissolved in the mixture;
S8.5, adding 2 parts by weight of filler into the mixture, and continuing stirring to ensure that the filler is uniformly distributed in the adhesive;
And S8.6, closing the heating equipment, and cooling the composite adhesive to room temperature to obtain the composite adhesive.
Example 2
The preparation method of the composite adhesive for preparing the industrial briquette comprises the following steps:
s8.1, placing 80 parts by weight of thermosetting resin into a reaction kettle, heating to a molten state,
Wherein the thermosetting resin comprises the following components:
30 parts of dimethyl urea, 12 parts of formaldehyde, 0.3 part of sodium hydroxide, 0.1 part of alumina, 13 parts of modified acrylic ester and 0.2 part of stabilizer;
S8.2, the polyurethane adhesive and polyisobutene alcohol are mixed according to the following ratio of 1: mixing uniformly in a proportion of 0.5 to form an environment-friendly adhesive;
S8.3, gradually adding 20 parts of environment-friendly adhesive into the melted thermosetting resin, and stirring at the same time to ensure that the two are fully mixed;
S8.4, gradually adding 0.3 part by weight of plasticizer into the mixture, and uniformly stirring to enable the plasticizer to be fully dissolved in the mixture;
S8.5, adding 2 parts by weight of filler into the mixture, and continuing stirring to ensure that the filler is uniformly distributed in the adhesive;
And S8.6, closing the heating equipment, and cooling the composite adhesive to room temperature to obtain the composite adhesive.
Example 3
The preparation method of the composite adhesive for preparing the industrial briquette comprises the following steps:
s8.1, placing 80 parts by weight of thermosetting resin into a reaction kettle, heating to a molten state,
Wherein the thermosetting resin comprises the following components:
30 parts of dimethyl urea, 12 parts of formaldehyde, 0.3 part of sodium hydroxide, 0.1 part of alumina, 15 parts of modified acrylic ester and 0.2 part of stabilizer;
S8.2, the polyurethane adhesive and polyisobutene alcohol are mixed according to the following ratio of 1: mixing uniformly in a proportion of 0.5 to form an environment-friendly adhesive;
S8.3, gradually adding 20 parts of environment-friendly adhesive into the melted thermosetting resin, and stirring at the same time to ensure that the two are fully mixed;
S8.4, gradually adding 0.3 part by weight of plasticizer into the mixture, and uniformly stirring to enable the plasticizer to be fully dissolved in the mixture;
S8.5, adding 2 parts by weight of filler into the mixture, and continuing stirring to ensure that the filler is uniformly distributed in the adhesive;
And S8.6, closing the heating equipment, and cooling the composite adhesive to room temperature to obtain the composite adhesive.
Example 4
The preparation method of the composite adhesive for preparing the industrial briquette comprises the following steps:
s8.1, placing 80 parts by weight of thermosetting resin into a reaction kettle, heating to a molten state,
Wherein the thermosetting resin comprises the following components:
30 parts of dimethyl urea, 12 parts of formaldehyde, 0.3 part of sodium hydroxide, 0.1 part of alumina, 18 parts of modified acrylic ester and 0.2 part of stabilizer;
S8.2, the polyurethane adhesive and polyisobutene alcohol are mixed according to the following ratio of 1: mixing uniformly in a proportion of 0.5 to form an environment-friendly adhesive;
S8.3, gradually adding 20 parts of environment-friendly adhesive into the melted thermosetting resin, and stirring at the same time to ensure that the two are fully mixed;
S8.4, gradually adding 0.3 part by weight of plasticizer into the mixture, and uniformly stirring to enable the plasticizer to be fully dissolved in the mixture;
S8.5, adding 2 parts by weight of filler into the mixture, and continuing stirring to ensure that the filler is uniformly distributed in the adhesive;
And S8.6, closing the heating equipment, and cooling the composite adhesive to room temperature to obtain the composite adhesive.
Example 5
The preparation method of the composite adhesive for preparing the industrial briquette comprises the following steps:
s8.1, placing 80 parts by weight of thermosetting resin into a reaction kettle, heating to a molten state,
Wherein the thermosetting resin comprises the following components:
30 parts of dimethyl urea, 12 parts of formaldehyde, 0.3 part of sodium hydroxide, 0.1 part of alumina, 20 parts of modified acrylic ester and 0.2 part of stabilizer;
S8.2, the polyurethane adhesive and polyisobutene alcohol are mixed according to the following ratio of 1: mixing uniformly in a proportion of 0.5 to form an environment-friendly adhesive;
S8.3, gradually adding 20 parts of environment-friendly adhesive into the melted thermosetting resin, and stirring at the same time to ensure that the two are fully mixed;
S8.4, gradually adding 0.3 part by weight of plasticizer into the mixture, and uniformly stirring to enable the plasticizer to be fully dissolved in the mixture;
S8.5, adding 2 parts by weight of filler into the mixture, and continuing stirring to ensure that the filler is uniformly distributed in the adhesive;
And S8.6, closing the heating equipment, and cooling the composite adhesive to room temperature to obtain the composite adhesive.
Example 6
The preparation method of the composite adhesive for preparing the industrial briquette comprises the following steps:
s8.1, placing 80 parts by weight of thermosetting resin into a reaction kettle, heating to a molten state,
Wherein the thermosetting resin comprises the following components:
30 parts of dimethyl urea, 12 parts of formaldehyde, 0.3 part of sodium hydroxide, 0.1 part of alumina, 15 parts of modified acrylic ester and 0.2 part of stabilizer;
S8.2, the polyurethane adhesive and polyisobutene alcohol are mixed according to the following ratio of 1:0.4, and forming the environment-friendly adhesive;
S8.3, gradually adding 20 parts by weight of the environment-friendly adhesive into the melted thermosetting resin, and stirring at the same time to ensure that the two are fully mixed;
S8.4, gradually adding 0.3 part by weight of plasticizer into the mixture, and uniformly stirring to enable the plasticizer to be fully dissolved in the mixture;
S8.5, adding 2 parts by weight of filler into the mixture, and continuing stirring to ensure that the filler is uniformly distributed in the adhesive;
And S8.6, closing the heating equipment, and cooling the composite adhesive to room temperature to obtain the composite adhesive.
Example 7
The preparation method of the composite adhesive for preparing the industrial briquette comprises the following steps:
s8.1, placing 80 parts by weight of thermosetting resin into a reaction kettle, heating to a molten state,
Wherein the thermosetting resin comprises the following components:
30 parts of dimethyl urea, 12 parts of formaldehyde, 0.3 part of sodium hydroxide, 0.1 part of alumina, 15 parts of modified acrylic ester and 0.2 part of stabilizer;
S8.2, the polyurethane adhesive and polyisobutene alcohol are mixed according to the following ratio of 1: mixing uniformly in a proportion of 0.5 to form an environment-friendly adhesive;
S8.3, gradually adding 20 parts by weight of the environment-friendly adhesive into the melted thermosetting resin, and stirring at the same time to ensure that the two are fully mixed;
S8.4, gradually adding 0.3 part by weight of plasticizer into the mixture, and uniformly stirring to enable the plasticizer to be fully dissolved in the mixture;
S8.5, adding 2 parts by weight of filler into the mixture, and continuing stirring to ensure that the filler is uniformly distributed in the adhesive;
And S8.6, closing the heating equipment, and cooling the composite adhesive to room temperature to obtain the composite adhesive.
Example 8
The preparation method of the composite adhesive for preparing the industrial briquette comprises the following steps:
s8.1, placing 80 parts by weight of thermosetting resin into a reaction kettle, heating to a molten state,
Wherein the thermosetting resin comprises the following components:
30 parts of dimethyl urea, 12 parts of formaldehyde, 0.3 part of sodium hydroxide, 0.1 part of alumina, 15 parts of modified acrylic ester and 0.2 part of stabilizer;
S8.2, the polyurethane adhesive and polyisobutene alcohol are mixed according to the following ratio of 1: mixing uniformly in a proportion of 0.6 to form an environment-friendly adhesive;
S8.3, gradually adding 20 parts by weight of the environment-friendly adhesive into the melted thermosetting resin, and stirring at the same time to ensure that the two are fully mixed;
S8.4, gradually adding 0.3 part by weight of plasticizer into the mixture, and uniformly stirring to enable the plasticizer to be fully dissolved in the mixture;
S8.5, adding 2 parts by weight of filler into the mixture, and continuing stirring to ensure that the filler is uniformly distributed in the adhesive;
And S8.6, closing the heating equipment, and cooling the composite adhesive to room temperature to obtain the composite adhesive.
Example 9
The preparation method of the composite adhesive for preparing the industrial briquette comprises the following steps:
s8.1, placing 80 parts by weight of thermosetting resin into a reaction kettle, heating to a molten state,
Wherein the thermosetting resin comprises the following components:
30 parts of dimethyl urea, 12 parts of formaldehyde, 0.3 part of sodium hydroxide, 0.1 part of alumina, 15 parts of modified acrylic ester and 0.2 part of stabilizer;
S8.2, the polyurethane adhesive and polyisobutene alcohol are mixed according to the following ratio of 1: mixing uniformly in a proportion of 0.5 to form an environment-friendly adhesive;
S8.3, gradually adding 15 parts by weight of the environment-friendly adhesive into the melted thermosetting resin, and stirring at the same time to ensure that the two are fully mixed;
S8.4, gradually adding 0.3 part by weight of plasticizer into the mixture, and uniformly stirring to enable the plasticizer to be fully dissolved in the mixture;
S8.5, adding 2 parts by weight of filler into the mixture, and continuing stirring to ensure that the filler is uniformly distributed in the adhesive;
And S8.6, closing the heating equipment, and cooling the composite adhesive to room temperature to obtain the composite adhesive.
Example 10
The preparation method of the composite adhesive for preparing the industrial briquette comprises the following steps:
s8.1, placing 80 parts by weight of thermosetting resin into a reaction kettle, heating to a molten state,
Wherein the thermosetting resin comprises the following components:
30 parts of dimethyl urea, 12 parts of formaldehyde, 0.3 part of sodium hydroxide, 0.1 part of alumina, 15 parts of modified acrylic ester and 0.2 part of stabilizer;
S8.2, the polyurethane adhesive and polyisobutene alcohol are mixed according to the following ratio of 1: mixing uniformly in a proportion of 0.5 to form an environment-friendly adhesive;
s8.3, gradually adding 25 parts by weight of the environment-friendly adhesive into the melted thermosetting resin, and stirring at the same time to ensure that the two are fully mixed;
S8.4, gradually adding 0.3 part by weight of plasticizer into the mixture, and uniformly stirring to enable the plasticizer to be fully dissolved in the mixture;
S8.5, adding 2 parts by weight of filler into the mixture, and continuing stirring to ensure that the filler is uniformly distributed in the adhesive;
And S8.6, closing the heating equipment, and cooling the composite adhesive to room temperature to obtain the composite adhesive.
Comparative example 1
The modified acrylic acid ester in the thermosetting resin prepared from the modified acrylic acid ester was removed by the method of example 1, and the unmodified thermosetting resin was used.
Comparative example 2
The polyisobutenol in the environment friendly adhesive was removed by the method of example 1.
Comparative example 3
The method of example 1 was used to remove the environment-friendly adhesive from the modified blend fiber.
The composite adhesive for preparing industrial briquette has good wear resistance and tensile strength, and the specific detection is shown in the following table:
In the preparation methods of the composite adhesive for preparing the industrial molded coal prepared in the above examples 1-10 and comparative examples 1-3, the composite adhesive obtained based on the preparation methods is applied to the preparation of the industrial molded coal and the molded coal to be detected is obtained on the premise that the preparation conditions of other industrial molded coals are unchanged, the performance index of the composite adhesive obtained based on the preparation methods is judged based on the detection of the molded coal to be detected, and related detection methods are as follows:
atmospheric pollutant emission standard: detection standard GB 3095-2012;
the method for measuring the sulfide of the exhaust gas of the fixed pollution source comprises the following steps: detection standard GB 30721-2015;
Molded coal soaking strength and soaking re-drying strength: detection standard MT/T749-2007;
And the data obtained according to the above detection method are shown in table 1.
Table 1 data for detecting industrial briquette
The above data fully shows that examples 1-10 compared with comparative examples 1-3, because the invention adopts the thermosetting resin prepared by modified acrylic ester and adds the composite adhesive prepared by the environment-friendly adhesive formed by mixing polyurethane adhesive and polyisobutene alcohol, the water content of the molded coal is effectively reduced, and the combustion pollutants of the molded coal are effectively and obviously reduced, and the invention is particularly as follows:
It can be seen from examples 1 to 6 that:
With the continuous increase of the content of the modified acrylic ester, the water content of the molded coal is obviously reduced, so that the water resistance of the molded coal can be obviously improved by adding the prepared composite adhesive of the modified acrylic ester.
As can be seen from examples 6, 7 and 8:
Along with the continuous increase of the mixing proportion of the polyurethane adhesive and the polyisobutene alcohol, the emission concentration of VOCs is obviously reduced, and the content of the polyisobutene alcohol is obviously influenced by pollutants after the molded coal is burnt;
Further, it can be seen by comparing example 1, example 9 and example 10: when the content of the environment-friendly adhesive in the composite adhesive is changed, the emission concentration of sulfide and the emission concentration of VOCs are obviously reduced, and by combining the examples 6-8, it can be deduced that the content of the environment-friendly adhesive in the composite adhesive has obvious influence on the emission concentration of sulfide;
Taking the embodiment 7 as the optimal embodiment in comprehensive consideration of practical economic factors;
as can be seen by comparing example 7 with comparative examples 1-3:
after the unmodified thermosetting resin is adopted, the water content of the molded coal is obviously increased, so that the modified thermosetting resin has obvious influence on the water resistance of the molded coal.
After the polyisobutene alcohol in the environment-friendly adhesive is removed, the emission concentration of VOCs is obviously increased; and is also provided with
After the environment-friendly adhesive is removed, the emission concentration of VOCs and the emission concentration of VOCs are obviously increased; thus, it is known that the environment-friendly adhesive has a significant influence on the combustion pollutants of the molded coal.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A composite adhesive for preparing industrial briquette is characterized in that: the composite adhesive is formed by mixing an environment-friendly adhesive, a plasticizer and a filler, wherein the environment-friendly adhesive is formed by mixing a polyurethane adhesive and polyisobutene alcohol;
Wherein the thermosetting resin comprises the following components:
20 to 35 parts by weight of dimethyl urea, 10 to 15 parts by weight of formaldehyde, 0.2 to 1 part by weight of sodium hydroxide, 0.1 to 2 parts by weight of alumina, 10 to 20 parts by weight of modified acrylic ester and 0.1 to 0.6 part by weight of stabilizer.
2. The composite binder for industrial briquette production according to claim 1, wherein: the composite adhesive comprises the following components in detail:
70-85 parts of thermosetting resin, 15-25 parts of environment-friendly adhesive, 0.1-3 parts of plasticizer and 2-5 parts of filler;
wherein, the mixing ratio of the polyurethane adhesive and the polyisobutene alcohol in the environment-friendly adhesive is 1:0.4-0.6.
3. The composite binder for industrial briquette production according to claim 2, wherein: the plasticizer is any one of phthalate, phosphate or fatty acid ester;
the filler is any one or more of tar, carbon black, silicate, alumina and aluminum sulfate.
4. The method for producing a composite binder for producing industrial briquette according to claim 1, wherein: the stabilizer is any one of tin di-n-butyl diisobutyrate, di-tert-butylphenol or polydimethylsiloxane.
5. The composite binder for industrial briquette production according to claim 1, wherein: the modified acrylic ester comprises the following components:
40 to 60 parts of butyl acrylate, 20 to 40 parts of polyoxyethylene methyl ether, 0.1 to 1.5 parts of p-toluenesulfonic acid and 0.05 to 0.1 part of auxiliary agent.
6. The composite binder for industrial briquette production according to claim 5, wherein: the preparation steps of the modified acrylic ester specifically comprise:
s5.1, placing 40-60 parts by weight of butyl acrylate and 20-40 parts by weight of polyoxyethylene methyl ether into a stirrer, adding 0.1-1.5 parts by weight of p-toluenesulfonic acid, starting the stirrer, and stirring for 30min at the speed of 450 rpm;
S5.2, sealing the stirrer, and carrying out copolymerization reaction at the temperature of 80 ℃;
s5.3, gradually forming a polymer chain in the copolymerization reaction, adding 0.05-0.1 part by weight of an auxiliary agent, and stirring for 5min at 80 rpm;
S5.4, after the reaction is finished, cooling the reaction vessel to room temperature to obtain the modified acrylic ester.
7. The composite binder for industrial briquette production according to claim 6, wherein: the auxiliary agent is any one of benzotriazole or hydroxybenzophenone.
8. A method for preparing the composite adhesive for preparing industrial briquette, which is used for preparing the composite adhesive for preparing industrial briquette according to any one of claims 1 to 7, and is characterized in that: the method comprises the following steps:
S8.1, placing 70-85 parts by weight of thermosetting resin into a reaction kettle, and heating to a molten state;
S8.2, the polyurethane adhesive and polyisobutene alcohol are mixed according to the following ratio of 1: mixing uniformly in a proportion of 0.4-0.6 to form an environment-friendly adhesive;
S8.3, gradually adding 15-25 parts by weight of the environment-friendly adhesive into the melted thermosetting resin, and stirring at the same time to ensure that the two are fully mixed;
S8.4, gradually adding 0.3 part by weight of plasticizer into the mixture, and uniformly stirring to enable the plasticizer to be fully dissolved in the mixture;
S8.5, adding 2 parts by weight of filler into the mixture, and continuing stirring to ensure that the filler is uniformly distributed in the adhesive;
And S8.6, closing the heating equipment, and cooling the composite adhesive to room temperature to obtain the composite adhesive.
9. The method for producing a composite binder for producing industrial briquette according to claim 8, wherein: in S8.1, the heating temperature of the reaction kettle is 180-200 ℃.
10. The method for producing a composite binder for producing industrial briquette according to claim 8, wherein: the stirring speed of the reaction kettle is 60-450rpm.
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Citations (5)
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|---|---|---|---|---|
| WO1999028363A1 (en) * | 1997-12-01 | 1999-06-10 | Henkel Kommanditgesellschaft Auf Aktien | Modified polyurethane hotmelt adhesive |
| CN109439205A (en) * | 2018-10-29 | 2019-03-08 | 烟台德邦科技有限公司 | Single-component acrylate adhesive and preparation method thereof |
| CN110003398A (en) * | 2019-04-28 | 2019-07-12 | 安徽匠星联创新材料科技有限公司 | A kind of polyvinyl alcohol modification water-based polyurethane-acrylate emulsion |
| CN114656914A (en) * | 2022-04-21 | 2022-06-24 | 宜兴市祥业化工有限公司 | Environment-friendly polyurethane adhesive for strengthening adhesive property and preparation method thereof |
| CN116948565A (en) * | 2023-08-10 | 2023-10-27 | 莆田市高德美环保科技有限公司 | High-performance steel nail glue and preparation method thereof |
-
2024
- 2024-02-20 CN CN202410189474.9A patent/CN118126658A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999028363A1 (en) * | 1997-12-01 | 1999-06-10 | Henkel Kommanditgesellschaft Auf Aktien | Modified polyurethane hotmelt adhesive |
| CN109439205A (en) * | 2018-10-29 | 2019-03-08 | 烟台德邦科技有限公司 | Single-component acrylate adhesive and preparation method thereof |
| CN110003398A (en) * | 2019-04-28 | 2019-07-12 | 安徽匠星联创新材料科技有限公司 | A kind of polyvinyl alcohol modification water-based polyurethane-acrylate emulsion |
| CN114656914A (en) * | 2022-04-21 | 2022-06-24 | 宜兴市祥业化工有限公司 | Environment-friendly polyurethane adhesive for strengthening adhesive property and preparation method thereof |
| CN116948565A (en) * | 2023-08-10 | 2023-10-27 | 莆田市高德美环保科技有限公司 | High-performance steel nail glue and preparation method thereof |
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