CN112239642A - Formula and preparation method of waterborne polyurethane aldehyde-free reaction adhesive - Google Patents
Formula and preparation method of waterborne polyurethane aldehyde-free reaction adhesive Download PDFInfo
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- CN112239642A CN112239642A CN202011214526.1A CN202011214526A CN112239642A CN 112239642 A CN112239642 A CN 112239642A CN 202011214526 A CN202011214526 A CN 202011214526A CN 112239642 A CN112239642 A CN 112239642A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4063—Mixtures of compounds of group C08G18/62 with other macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4081—Mixtures of compounds of group C08G18/64 with other macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/58—Epoxy resins
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
- C08G18/6212—Polymers of alkenylalcohols; Acetals thereof; Oxyalkylation products thereof
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/64—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
- C08G18/6484—Polysaccharides and derivatives thereof
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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Abstract
The invention discloses a formula and a preparation method of waterborne polyurethane aldehyde-free reaction adhesive, relates to the technical field of waterborne polyurethane aldehyde-free reaction adhesive, and particularly relates to a formula and a preparation method of waterborne polyurethane aldehyde-free reaction adhesive, which are mainly prepared from the following raw materials in parts by weight: 60-74 parts of water, 6-10 parts of kaolin, 8-16 parts of PVA, 1-3 parts of boric acid, 1-3 parts of epoxy resin, 0.5-1.5 parts of guar gum and 6-10 parts of MDI. According to the formula and the preparation method of the waterborne polyurethane aldehyde-free reaction adhesive, the waterborne polyurethane aldehyde-free reaction adhesive is prepared from water, kaolin, PVA, boric acid, epoxy resin, guar gum and MDI, formaldehyde-free addition raw materials can effectively avoid formaldehyde pollution to the environment, and the preparation process is convenient to operate, so that the preparation efficiency of the waterborne polyurethane aldehyde-free reaction adhesive can be effectively improved, the preparation quality of the waterborne polyurethane aldehyde-free reaction adhesive can be effectively improved, the viscosity of the waterborne polyurethane aldehyde-free reaction adhesive is strong, and the waterborne polyurethane aldehyde-free reaction adhesive has a waterproof function.
Description
Technical Field
The invention relates to the technical field of waterborne polyurethane aldehyde-free reaction adhesives, in particular to a formula and a preparation method of a waterborne polyurethane aldehyde-free reaction adhesive.
Background
Aqueous polyurethanes are new polyurethane systems in which water is used as the dispersion medium instead of an organic solvent, and are also referred to as water-dispersed polyurethanes, aqueous polyurethanes, or water-based polyurethanes. The waterborne polyurethane takes water as a solvent, and has the advantages of no pollution, safety, reliability, excellent mechanical property, good compatibility, easy modification and the like. Glue is a substance that can bond two objects. The glue is not independent and must be applied between two objects to achieve adhesion. Chemical components in glue in an aqueous environment. The high molecular weight polymer (vinyl acetate in the white glue is one of petroleum derivatives) in the glue is round particles, and the radius of the particles is 0.5-5 μm. The adhesion of objects is realized by the tension between the polymer bodies in the glue.
The existing reaction glue has the defects of high cost of raw materials, complex working procedures and long consumed time.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a formula and a preparation method of a waterborne polyurethane aldehyde-free reaction adhesive, and solves the problems of high cost of raw materials, complex working procedures and long consumed time of the existing reaction adhesive in the background art.
In order to achieve the purpose, the invention is realized by the following technical scheme: a formula and a preparation method of waterborne polyurethane aldehyde-free reaction glue are mainly prepared from the following raw materials in parts by weight: 60-74 parts of water, 6-10 parts of kaolin, 8-16 parts of PVA, 1-3 parts of boric acid, 1-3 parts of epoxy resin, 0.5-1.5 parts of guar gum and 6-10 parts of MDI.
Optionally, the preparation method of the formula of the waterborne polyurethane aldehyde-free reaction adhesive comprises the following steps:
s1, weighing raw materials: weighing water, kaolin, PVA, boric acid, epoxy resin, guar gum and MDI in sequence according to the components and the weight of the formula;
s2, primary mixing and stirring: respectively taking out the water, kaolin and PVA in the step S1, weighing the water, the kaolin and the PVA in the raw materials, then putting the water into a normal pressure reaction kettle, heating to a proper temperature, putting the kaolin into the normal pressure reaction kettle, uniformly stirring, then putting the PVA into the normal pressure reaction kettle, and stirring the solution to prepare a mixed solution A;
s3, mixing and stirring again: cooling the mixed solution A obtained in the step S2 in the mixing and stirring process to a preset temperature, and adding boric acid and epoxy resin to obtain a mixed solution B;
s4, mixing and stirring for three times: adding guar gum into the mixed solution B obtained in the step S3, mixing and stirring again, stirring to obtain guar gum, and barreling for later use;
s5, final mixing and stirring: and (5) taking the glue in the step S4 and the third mixing and stirring, and mixing and stirring the MDI and the glue uniformly for later use.
Optionally, in the step S2, in the preliminary mixing and stirring, the model of the reaction kettle is JBG, and the stirring speed is 30-42 r/min.
Optionally, in the step S2, during the preliminary mixing and stirring, the temperature is increased to 90-100 ℃.
Optionally, in the step S2, in the preliminary mixing, the kaolin is one or both of clay and calcium carbonate.
Optionally, in the step S2, in the preliminary mixing and stirring, the stirring time is 1.75-2.25 h.
Optionally, in the step S3, during the mixing and stirring again, the temperature is reduced to 65-70 ℃.
Optionally, in the step S3, in the mixing and stirring again, the stirring reaction is performed for 1.75-2.25 h.
Optionally, in the step S3, in the mixing and stirring again, stirring is performed for 0.25 to 0.75 hour.
The invention provides a formula and a preparation method of a waterborne polyurethane aldehyde-free reaction adhesive, which have the following beneficial effects:
according to the formula and the preparation method of the waterborne polyurethane aldehyde-free reaction adhesive, the waterborne polyurethane aldehyde-free reaction adhesive is prepared from water, kaolin, PVA, boric acid, epoxy resin, guar gum and MDI, formaldehyde-free addition raw materials can effectively avoid formaldehyde pollution to the environment, and the preparation process is convenient to operate, so that the preparation efficiency of the waterborne polyurethane aldehyde-free reaction adhesive can be effectively improved, the preparation quality of the waterborne polyurethane aldehyde-free reaction adhesive can be effectively improved, the viscosity of the waterborne polyurethane aldehyde-free reaction adhesive is strong, and the waterborne polyurethane aldehyde-free reaction adhesive has a waterproof function.
Detailed Description
In the following, technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Embodiment 1
The invention provides a technical scheme that: a formula and a preparation method of waterborne polyurethane aldehyde-free reaction glue are mainly prepared from the following raw materials in parts by weight: 60-74 parts of water, 6-10 parts of kaolin, 8-16 parts of PVA, 1-3 parts of boric acid, 1-3 parts of epoxy resin, 0.5-1.5 parts of guar gum and 6-10 parts of MDI.
In the invention: the preparation method of the formula of the waterborne polyurethane aldehyde-free reaction adhesive comprises the following steps:
s1, weighing raw materials: weighing 60 parts of water, 6 parts of kaolin, 8 parts of PVA, 1 part of boric acid, 1 part of epoxy resin, 0.5 part of guar gum and 6 parts of MDI in sequence according to the components and the weight of the formula;
s2, primary mixing and stirring: respectively taking out the water 60 parts, the kaolin 6 parts and the PVA8 parts from the raw materials in the step S1, weighing, then putting the water 60 parts into a normal pressure reaction kettle, heating to a proper temperature, putting the kaolin 6 parts, uniformly stirring, then putting the PVA8 parts, and stirring the solution to prepare a mixed solution A;
s3, mixing and stirring again: cooling the mixed solution A obtained in the step S2 in the mixing and stirring process to a preset temperature, and adding 1 part of boric acid and 1 part of epoxy resin to obtain a mixed solution B;
s4, mixing and stirring for three times: adding 0.5 part of guar gum into the mixed solution B obtained in the step S3, mixing and stirring again, stirring to obtain guar gum, and barreling for later use;
s5, final mixing and stirring: and (5) taking the glue in the third mixing and stirring in the step S4, and mixing and stirring 6 parts of MDI and the glue uniformly for later use.
In the invention: and S2, in the primary mixing and stirring, the model of the reaction kettle is JBG, and the stirring speed is 30 r/min.
In the invention: step S2, heating to 90 ℃ during the primary mixing and stirring.
In the invention: step S2, in the preliminary mixing and stirring, the kaolin is one or two of clay or calcium carbonate.
In the invention: and step S2, in the primary mixing and stirring, the stirring time is 1.75 h.
In the invention: and step S3, cooling to 65 ℃ during mixing and stirring again.
In the invention: in step S3, while stirring again, reaction was stirred for 1.75H.
In the invention: in step S3, the mixture was stirred for 0.25h while stirring again.
Example II
The invention provides a technical scheme that: a formula and a preparation method of waterborne polyurethane aldehyde-free reaction glue are mainly prepared from the following raw materials in parts by weight: 67 parts of water, 8 parts of kaolin, 12 parts of PVA, 2 parts of boric acid, 2 parts of epoxy resin, 1 part of guar gum and 8 parts of MDI.
In the invention: the preparation method of the formula of the waterborne polyurethane aldehyde-free reaction adhesive comprises the following steps:
s1, weighing raw materials: weighing 67 parts of water, 8 parts of kaolin, 12 parts of PVA, 2 parts of boric acid, 2 parts of epoxy resin, 1 part of guar gum and 8 parts of MDI in sequence according to the components and the weight of the formula;
s2, primary mixing and stirring: s1, weighing 67 parts of water, 8 parts of kaolin and 12 parts of PVA in the raw materials, putting 67 parts of water into a normal-pressure reaction kettle, heating to a proper temperature, putting 8 parts of kaolin, uniformly stirring, putting 12 parts of PVA, and stirring the solution to obtain a mixed solution A;
s3, mixing and stirring again: cooling the mixed solution A obtained in the step S2 in the mixing and stirring process to a preset temperature, and adding 2 parts of boric acid and 2 parts of epoxy resin to obtain a mixed solution B;
s4, mixing and stirring for three times: adding 1 part of guar gum into the mixed solution B obtained in the step S3, mixing and stirring again, stirring to obtain gum, and barreling for later use;
s5, final mixing and stirring: and (5) taking the glue in the third mixing and stirring in the step S4, and mixing and stirring 8 parts of MDI and the glue uniformly for later use.
In the invention: and S2, in the primary mixing and stirring, the model of the reaction kettle is JBG, and the stirring speed is 36 r/min.
In the invention: step S2, heating to 95 ℃ during the primary mixing and stirring.
In the invention: step S2, in the preliminary mixing and stirring, the kaolin is one or two of clay or calcium carbonate.
In the invention: and step S2, in the primary mixing and stirring, the stirring time is 2 h.
In the invention: and step S3, cooling to 67.5 ℃ during mixing and stirring again.
In the invention: in step S3, the mixture is stirred again for reaction for 2 hours.
In the invention: in step S3, the mixture was stirred for 0.5 hour during the mixing and stirring.
Example three
The invention provides a technical scheme that: a formula and a preparation method of waterborne polyurethane aldehyde-free reaction glue are mainly prepared from the following raw materials in parts by weight: 74 parts of water, 10 parts of kaolin, 16 parts of PVA, 3 parts of boric acid, 3 parts of epoxy resin, 1.5 parts of guar gum and 10 parts of MDI.
In the invention: the preparation method of the formula of the waterborne polyurethane aldehyde-free reaction adhesive comprises the following steps:
s1, weighing raw materials: weighing 74 parts of water, 10 parts of kaolin, 16 parts of PVA, 3 parts of boric acid, 3 parts of epoxy resin, 1.5 parts of guar gum and 10 parts of MDI in sequence according to the components and the weight of the formula;
s2, primary mixing and stirring: respectively taking out 74 parts of water, 10 parts of kaolin and 16 parts of PVA from the raw materials in the step S1, then putting 74 parts of water into a normal-pressure reaction kettle, heating to a proper temperature, putting 10 parts of kaolin, uniformly stirring, then putting 16 parts of PVA, and stirring the solution to prepare a mixed solution A;
s3, mixing and stirring again: cooling the mixed solution A obtained in the step S2 in the mixing and stirring process to a preset temperature, and adding 3 parts of boric acid and 3 parts of epoxy resin to obtain a mixed solution B;
s4, mixing and stirring for three times: adding 1.5 parts of guar gum into the mixed solution B obtained in the step S3, mixing and stirring again, stirring to obtain gum, and barreling for later use;
s5, final mixing and stirring: and (5) taking the glue in the third mixing and stirring in the step S4, and mixing and stirring 10 parts of MDI and the glue uniformly for later use.
In the invention: and S2, in the primary mixing and stirring, the model of the reaction kettle is JBG, and the stirring speed is 42 r/min.
In the invention: step S2, heating to 100 ℃ during the primary mixing and stirring.
In the invention: step S2, in the preliminary mixing and stirring, the kaolin is one or two of clay or calcium carbonate.
In the invention: and step S2, in the primary mixing and stirring, the stirring time is 2.25 h.
In the invention: and step S3, cooling to 70 ℃ during mixing and stirring again.
In the invention: in step S3, the mixture was stirred again for 2.25 hours.
In the invention: in step S3, the mixture was stirred for 0.75h while stirring again.
In summary, the formula and the preparation method of the waterborne polyurethane aldehyde-free reaction adhesive comprise the steps of firstly, putting 67 parts of water into a normal-pressure reaction kettle, and heating to 95 ℃; secondly, 8 parts of kaolin (clay or calcium carbonate) are added and stirred uniformly; secondly, adding 12 parts of PVA, stirring and dissolving for 2 hours, then cooling to 65-70 ℃, adding 2 parts of boric acid and 2 parts of epoxy resin, and stirring and reacting for 2 hours; then, adding 1 part of guar gum, stirring for 30 minutes, discharging the gum and barreling; and finally, when the adhesive is used in a factory, the adhesive is uniformly stirred, 8 parts of MDI is added, and the adhesive is uniformly stirred for use.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The formula of the waterborne polyurethane aldehyde-free reaction adhesive is characterized by being mainly prepared from the following raw materials in parts by weight: 60-74 parts of water, 6-10 parts of kaolin, 8-16 parts of PVA, 1-3 parts of boric acid, 1-3 parts of epoxy resin, 0.5-1.5 parts of guar gum and 6-10 parts of MDI.
2. The formula of the waterborne polyurethane aldehyde-free reaction adhesive according to claim 1, wherein the formula comprises the following components in percentage by weight: the preparation method of the formula of the waterborne polyurethane aldehyde-free reaction adhesive comprises the following steps:
s1, weighing raw materials: weighing water, kaolin, PVA, boric acid, epoxy resin, guar gum and MDI in sequence according to the components and the weight of the formula;
s2, primary mixing and stirring: respectively taking out the water, kaolin and PVA in the step S1, weighing the water, the kaolin and the PVA in the raw materials, then putting the water into a normal pressure reaction kettle, heating to a proper temperature, putting the kaolin into the normal pressure reaction kettle, uniformly stirring, then putting the PVA into the normal pressure reaction kettle, and stirring the solution to prepare a mixed solution A;
s3, mixing and stirring again: cooling the mixed solution A obtained in the step S2 in the mixing and stirring process to a preset temperature, and adding boric acid and epoxy resin to obtain a mixed solution B;
s4, mixing and stirring for three times: adding guar gum into the mixed solution B obtained in the step S3, mixing and stirring again, stirring to obtain guar gum, and barreling for later use;
s5, final mixing and stirring: and (5) taking the glue in the step S4 and the third mixing and stirring, and mixing and stirring the MDI and the glue uniformly for later use.
3. The formula of the waterborne polyurethane aldehyde-free reaction adhesive according to claim 2, wherein the formula comprises the following components in percentage by weight: in the step S2, in the preliminary mixing and stirring, the model of the reaction kettle is JBG, and the stirring speed is 30-42 r/min.
4. The formula of the waterborne polyurethane aldehyde-free reaction adhesive according to claim 2, wherein the formula comprises the following components in percentage by weight: and S2, heating to 90-100 ℃ during primary mixing and stirring.
5. The formula of the waterborne polyurethane aldehyde-free reaction adhesive according to claim 2, wherein the formula comprises the following components in percentage by weight: in the step S2, in the preliminary mixing, the kaolin is one or both of clay and calcium carbonate.
6. The formula of the waterborne polyurethane aldehyde-free reaction adhesive according to claim 2, wherein the formula comprises the following components in percentage by weight: in the step S2 and the preliminary mixing and stirring, the stirring time is 1.75-2.25 h.
7. The formula of the waterborne polyurethane aldehyde-free reaction adhesive according to claim 2, wherein the formula comprises the following components in percentage by weight: and S3, cooling to 65-70 ℃ during mixing and stirring again.
8. The formula of the waterborne polyurethane aldehyde-free reaction adhesive according to claim 2, wherein the formula comprises the following components in percentage by weight: and step S3, stirring and reacting for 1.75-2.25h during the mixing and stirring again.
9. The formula of the waterborne polyurethane aldehyde-free reaction adhesive according to claim 2, wherein the formula comprises the following components in percentage by weight: and step S3, stirring for 0.25-0.75h during the mixing and stirring again.
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| CN202011214526.1A CN112239642A (en) | 2020-11-04 | 2020-11-04 | Formula and preparation method of waterborne polyurethane aldehyde-free reaction adhesive |
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| CN202011214526.1A CN112239642A (en) | 2020-11-04 | 2020-11-04 | Formula and preparation method of waterborne polyurethane aldehyde-free reaction adhesive |
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| CN110128973A (en) * | 2019-05-30 | 2019-08-16 | 江苏美乔科技有限公司 | A kind of environment-friendly water-based high viscosity paste box glue and preparation method thereof |
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2020
- 2020-11-04 CN CN202011214526.1A patent/CN112239642A/en active Pending
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| CN101696259A (en) * | 2009-10-09 | 2010-04-21 | 宜兴市光辉胶粘剂有限公司 | Method for preparing composite water-based polyurethane |
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| CN109401674A (en) * | 2018-09-19 | 2019-03-01 | 海南农垦林产集团股份有限公司 | A kind of integrated timber adhesive and preparation method thereof |
| CN110128973A (en) * | 2019-05-30 | 2019-08-16 | 江苏美乔科技有限公司 | A kind of environment-friendly water-based high viscosity paste box glue and preparation method thereof |
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