CN111019583A - Polyurethane glue and preparation method thereof - Google Patents
Polyurethane glue and preparation method thereof Download PDFInfo
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- CN111019583A CN111019583A CN201911220645.5A CN201911220645A CN111019583A CN 111019583 A CN111019583 A CN 111019583A CN 201911220645 A CN201911220645 A CN 201911220645A CN 111019583 A CN111019583 A CN 111019583A
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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
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
Abstract
The invention discloses polyurethane glue and a preparation method thereof, wherein the polyurethane glue is prepared from the following raw materials in parts by weight: 80-100 parts of polyurethane dispersoid, 10-20 parts of melamine resin, 0.5-1.5 parts of defoaming agent, 0.5-1.2 parts of wetting dispersant, 0.3-0.7 part of pH value regulator, 0.2-0.8 part of thickening agent, 0.5-1.5 parts of bactericide, 20-40 parts of cosolvent, 10-20 parts of epoxy resin, 10-20 parts of VAE emulsion, 0.1-0.8 part of preservative, 0.2-0.6 part of surfactant and a proper amount of distilled water. By adding the polyurethane dispersion and other suitable additives into the VAE emulsion, the adhesive force of the glue to a base material is obviously enhanced, the quick-drying performance of the glue is enhanced, and the environment-friendly property is excellent because no other organic solvent is added.
Description
Technical Field
The invention relates to the field of glue preparation, in particular to polyurethane glue and a preparation method thereof.
Background
The polyurethane adhesive has the advantages of adjustable hardness, low temperature resistance, good flexibility, high bonding strength and the like, can bond various materials such as metal, nonmetal and the like, and has wider and wider application. However, the entire polyurethane adhesive industry is still based on solvent type. With the enhancement of the awareness of safety and environmental protection, the research on the waterborne polyurethane adhesive is rapidly developed. The water-based polyurethane adhesive is formed by dissolving or dispersing polyurethane in water, and has the advantages of no solvent, no pollution, good film forming property, strong bonding force, easy mixing with other polymers, particularly emulsion polymers, and the like, compared with a solvent type adhesive.
Polyurethanes (PU) are high polymers polymerized by polycondensation of polyisocyanates (based on diisocyanates) and oligomeric polyols. Because the molecular chain contains isocyano (-NCO) and carbamate (-NHCOO-), the polyurethane has high activity and polarity. The adhesive has excellent chemical adhesion with substrates containing active hydrogen, such as porous materials of foam, leather, fabric, paper, ceramic and the like, and materials with smooth surfaces of metal, glass, rubber and the like. In addition, the performance of the polyurethane material can be adjusted in a large range by changing the molecular weight, the structure and the like of the polyhydroxy compound, so that the polyurethane material is widely applied to various fields of industry, agriculture and daily life, wherein the polyurethane material comprises paint, packaging, leather and the like, and is a multifunctional polymer material. The solvent type polyurethane adhesive is an adhesive formed by dissolving polyurethane in an organic solvent or dispersing polyurethane in the organic solvent, and has the advantages of good elasticity, low temperature resistance, excellent wear resistance and the like. The solvent type polyurethane adhesive has good adhesive property to acrylonitrile-styrene-butadiene copolymer (PBS) resin, polypropylene fiber board, fabric, vinyl plastic and the like, so that the solvent type polyurethane adhesive is widely applied to adhesive for bonding polyvinyl chloride (PVC) artificial leather of automotive interior parts, instrument boards, mud guards, door panels, floor felts and ceiling linings. In recent years, with the enhancement of environmental protection and energy consciousness of people, especially with the strict limitation of various regulations on the content of Volatile Organic Compounds (VOC) in a glue system, the problem of material safety is more and more emphasized by consumers. However, the solvent type polyurethane adhesive contains toxic and harmful substances such as benzene, toluene, xylene and the like, which not only pollutes the environment, but also can harm human health. Therefore, the search for a low-toxicity environment-friendly water-based polyurethane glue is an urgent need. The water-based polyurethane glue is prepared by using polyurethane as a bonding material and water as a solvent or a dispersant to replace a toxic organic solvent which pollutes the environment. The polyurethane glue has simple and convenient process, can be cured at room temperature and under heating, has the hardness which can be adjusted in a large range, but has poor heat resistance, and the glue at the bonding seam is easy to fall off under the high-temperature condition and has poor bonding property.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the polyurethane glue and the preparation method thereof, the polyurethane dispersoid and other suitable additives are added into the VAE emulsion, so that the adhesive force of the glue to a base material is obviously enhanced, the quick-drying performance of the glue is enhanced, and the polyurethane glue is not added with any other organic solvent and has excellent environmental protection property.
In order to achieve the aim of the invention, the invention adopts the specific scheme that:
a polyurethane glue and a preparation method thereof are prepared from the following raw materials in parts by weight: 80-100 parts of polyurethane dispersoid, 10-20 parts of melamine resin, 0.5-1.5 parts of defoaming agent, 0.5-1.2 parts of wetting dispersant, 0.3-0.7 part of pH value regulator, 0.2-0.8 part of thickening agent, 0.5-1.5 parts of bactericide, 20-40 parts of cosolvent, 10-20 parts of epoxy resin, 10-20 parts of VAE emulsion, 0.1-0.8 part of preservative, 0.2-0.6 part of surfactant and a proper amount of distilled water.
Further, the wetting dispersant is polyacrylic acid sodium salt, the defoaming agent is fluorine modified siloxane defoaming agent, the thickening agent is associated polyurethane, and the leveling agent is organic silicon leveling agent.
Further, the preservative is isothiazolone.
Further, the defoaming agent is at least one of a mineral oil defoaming agent, a silicone defoaming agent and a polyether defoaming agent.
Further, the preparation method of the polyurethane glue comprises the following steps:
(1) adding the polyurethane dispersion, the VAE emulsion, the melamine resin and the epoxy resin into a reaction vessel, setting the stirring speed to be 35-40 r/min, stirring for 15-25 min, and slowly adding the wetting dispersant into the reaction vessel while stirring;
(2) after the wetting dispersant is added, setting the stirring speed to be 65-75 revolutions per minute, stirring for 20-25 minutes, and adding a defoaming agent, a surfactant, a cosolvent, a bactericide, a preservative and distilled water into the reaction vessel while stirring;
(3) after the addition is finished, setting the stirring speed to be 25-35 r/min, then stirring for 10-15 min, and adding the thickening agent and the pH value regulator while stirring;
(4) sampling, detecting the viscosity of the product, and directly discharging the product if the viscosity is qualified; if the viscosity is not qualified, adding distilled water or thickening agent additionally, continuing stirring to adjust the viscosity of the product until the viscosity of the product is qualified, and discharging.
The invention has the beneficial effects that:
the polyurethane dispersoid is moderate crystalline polyurethane, and the aging resistance and high temperature resistance of the polyurethane dispersoid are achieved by physical crystallization of a polyurethane chain segment; by adding the polyurethane dispersion and other suitable additives into the VAE emulsion, the adhesive force of the glue to a base material is obviously enhanced, the quick-drying performance of the glue is enhanced, and the environment-friendly property is excellent because no other organic solvent is added.
Detailed Description
The present invention is further described below by way of specific examples, but the present invention is not limited to only the following examples. Variations, combinations, or substitutions of the invention, which are within the scope of the invention or the spirit, scope of the invention, will be apparent to those of skill in the art and are within the scope of the invention.
Example 1: a polyurethane glue and a preparation method thereof are prepared from the following raw materials in parts by weight: 80 parts of polyurethane dispersoid, 10 parts of melamine resin, 0.5 part of defoaming agent, 0.5 part of wetting dispersant, 0.3 part of pH value regulator, 0.2 part of thickening agent, 0.5 part of bactericide, 20 parts of cosolvent, 10 parts of epoxy resin, 10 parts of VAE emulsion, 0.1 part of preservative, 0.2 part of surfactant and a proper amount of distilled water.
Further, the wetting dispersant is polyacrylic acid sodium salt, the defoaming agent is fluorine modified siloxane defoaming agent, the thickening agent is associated polyurethane, and the leveling agent is organic silicon leveling agent.
Further, the preservative is isothiazolone.
Further, the defoaming agent is at least one of a mineral oil defoaming agent, a silicone defoaming agent and a polyether defoaming agent.
Further, the preparation method of the polyurethane glue comprises the following steps:
(1) adding the polyurethane dispersion, the VAE emulsion, the melamine resin and the epoxy resin into a reaction vessel, setting the stirring speed to be 35-40 r/min, stirring for 15-25 min, and slowly adding the wetting dispersant into the reaction vessel while stirring;
(2) after the wetting dispersant is added, setting the stirring speed to be 65-75 revolutions per minute, stirring for 20-25 minutes, and adding a defoaming agent, a surfactant, a cosolvent, a bactericide, a preservative and distilled water into the reaction vessel while stirring;
(3) after the addition is finished, setting the stirring speed to be 25-35 r/min, then stirring for 10-15 min, and adding the thickening agent and the pH value regulator while stirring;
(4) sampling, detecting the viscosity of the product, and directly discharging the product if the viscosity is qualified; if the viscosity is not qualified, adding distilled water or thickening agent additionally, continuing stirring to adjust the viscosity of the product until the viscosity of the product is qualified, and discharging.
Example 2: a polyurethane glue and a preparation method thereof are prepared from the following raw materials in parts by weight: 90 parts of polyurethane dispersoid, 15 parts of melamine resin, 1 part of defoaming agent, 0.85 part of wetting dispersant, 0.5 part of pH value regulator, 0.5 part of thickening agent, 1 part of bactericide, 30 parts of cosolvent, 15 parts of epoxy resin, 15 parts of VAE emulsion, 0.45 part of preservative, 0.4 part of surfactant and a proper amount of distilled water.
Further, the wetting dispersant is polyacrylic acid sodium salt, the defoaming agent is fluorine modified siloxane defoaming agent, the thickening agent is associated polyurethane, and the leveling agent is organic silicon leveling agent.
Further, the preservative is isothiazolone.
Further, the defoaming agent is at least one of a mineral oil defoaming agent, a silicone defoaming agent and a polyether defoaming agent.
Further, the preparation method of the polyurethane glue comprises the following steps:
(1) adding the polyurethane dispersion, the VAE emulsion, the melamine resin and the epoxy resin into a reaction vessel, setting the stirring speed to be 35-40 r/min, stirring for 15-25 min, and slowly adding the wetting dispersant into the reaction vessel while stirring;
(2) after the wetting dispersant is added, setting the stirring speed to be 65-75 revolutions per minute, stirring for 20-25 minutes, and adding a defoaming agent, a surfactant, a cosolvent, a bactericide, a preservative and distilled water into the reaction vessel while stirring;
(3) after the addition is finished, setting the stirring speed to be 25-35 r/min, then stirring for 10-15 min, and adding the thickening agent and the pH value regulator while stirring;
(4) sampling, detecting the viscosity of the product, and directly discharging the product if the viscosity is qualified; if the viscosity is not qualified, adding distilled water or thickening agent additionally, continuing stirring to adjust the viscosity of the product until the viscosity of the product is qualified, and discharging.
Example 3: a polyurethane glue and a preparation method thereof are prepared from the following raw materials in parts by weight: 100 parts of polyurethane dispersoid, 20 parts of melamine resin, 1.5 parts of defoaming agent, 1.2 parts of wetting dispersant, 0.7 part of pH value regulator, 0.8 part of thickening agent, 1.5 parts of bactericide, 40 parts of cosolvent, 20 parts of epoxy resin, 20 parts of VAE emulsion, 0.8 part of preservative, 0.6 part of surfactant and a proper amount of distilled water.
Further, the wetting dispersant is polyacrylic acid sodium salt, the defoaming agent is fluorine modified siloxane defoaming agent, the thickening agent is associated polyurethane, and the leveling agent is organic silicon leveling agent.
Further, the preservative is isothiazolone.
Further, the defoaming agent is at least one of a mineral oil defoaming agent, a silicone defoaming agent and a polyether defoaming agent.
Further, the preparation method of the polyurethane glue comprises the following steps:
(1) adding the polyurethane dispersion, the VAE emulsion, the melamine resin and the epoxy resin into a reaction vessel, setting the stirring speed to be 35-40 r/min, stirring for 15-25 min, and slowly adding the wetting dispersant into the reaction vessel while stirring;
(2) after the wetting dispersant is added, setting the stirring speed to be 65-75 revolutions per minute, stirring for 20-25 minutes, and adding a defoaming agent, a surfactant, a cosolvent, a bactericide, a preservative and distilled water into the reaction vessel while stirring;
(3) after the addition is finished, setting the stirring speed to be 25-35 r/min, then stirring for 10-15 min, and adding the thickening agent and the pH value regulator while stirring;
(4) sampling, detecting the viscosity of the product, and directly discharging the product if the viscosity is qualified; if the viscosity is not qualified, adding distilled water or thickening agent additionally, continuing stirring to adjust the viscosity of the product until the viscosity of the product is qualified, and discharging.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. The polyurethane glue is characterized by being prepared from the following raw materials in parts by weight: 80-100 parts of polyurethane dispersoid, 10-20 parts of melamine resin, 0.5-1.5 parts of defoaming agent, 0.5-1.2 parts of wetting dispersant, 0.3-0.7 part of pH value regulator, 0.2-0.8 part of thickening agent, 0.5-1.5 parts of bactericide, 20-40 parts of cosolvent, 10-20 parts of epoxy resin, 10-20 parts of VAE emulsion, 0.1-0.8 part of preservative, 0.2-0.6 part of surfactant and a proper amount of distilled water.
2. The polyurethane glue and the preparation method thereof as claimed in claim 1, wherein the wetting dispersant is polyacrylic acid sodium salt, the defoamer is fluorine modified siloxane defoamer, the thickener is associated polyurethane, and the leveling agent is organosilicon leveling agent.
3. The polyurethane glue and the preparation method thereof according to claim 1, wherein the preservative is isothiazolone.
4. The polyurethane glue and the preparation method thereof as claimed in claim 1, wherein the defoamer is at least one of mineral oil defoamer, silicone defoamer and polyether defoamer.
5. The polyurethane glue and the preparation method thereof according to claim 1, characterized in that the preparation method of the polyurethane glue comprises the following steps:
(1) adding the polyurethane dispersion, the VAE emulsion, the melamine resin and the epoxy resin into a reaction vessel, setting the stirring speed to be 35-40 r/min, stirring for 15-25 min, and slowly adding the wetting dispersant into the reaction vessel while stirring;
(2) after the wetting dispersant is added, setting the stirring speed to be 65-75 revolutions per minute, stirring for 20-25 minutes, and adding a defoaming agent, a surfactant, a cosolvent, a bactericide, a preservative and distilled water into the reaction vessel while stirring;
(3) after the addition is finished, setting the stirring speed to be 25-35 r/min, then stirring for 10-15 min, and adding the thickening agent and the pH value regulator while stirring;
(4) sampling, detecting the viscosity of the product, and directly discharging the product if the viscosity is qualified; if the viscosity is not qualified, adding distilled water or thickening agent additionally, continuing stirring to adjust the viscosity of the product until the viscosity of the product is qualified, and discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911220645.5A CN111019583A (en) | 2019-12-03 | 2019-12-03 | Polyurethane glue and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911220645.5A CN111019583A (en) | 2019-12-03 | 2019-12-03 | Polyurethane glue and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111019583A true CN111019583A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911220645.5A Pending CN111019583A (en) | 2019-12-03 | 2019-12-03 | Polyurethane glue and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111574944A (en) * | 2020-05-08 | 2020-08-25 | 湖南汇博化工科技有限公司 | Water-based precoating adhesive for vulcanized shoes and preparation method thereof |
| CN114163948A (en) * | 2021-12-01 | 2022-03-11 | 广东启沃环境科技有限公司 | High-temperature-resistant waterproof inorganic glue and preparation method and application thereof |
| CN114534532A (en) * | 2022-01-26 | 2022-05-27 | 中联品检(佛山)检验技术有限公司 | Synthetic blood for detecting protective products and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703068A (en) * | 2011-06-15 | 2014-04-02 | 麦兰特公司 | Environmentally friendly coalescing agents |
| CN107418497A (en) * | 2017-08-16 | 2017-12-01 | 华威粘结材料（上海）股份有限公司 | A kind of waterborne polyurethane adhesive and preparation method and application |
-
2019
- 2019-12-03 CN CN201911220645.5A patent/CN111019583A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703068A (en) * | 2011-06-15 | 2014-04-02 | 麦兰特公司 | Environmentally friendly coalescing agents |
| CN107418497A (en) * | 2017-08-16 | 2017-12-01 | 华威粘结材料（上海）股份有限公司 | A kind of waterborne polyurethane adhesive and preparation method and application |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111574944A (en) * | 2020-05-08 | 2020-08-25 | 湖南汇博化工科技有限公司 | Water-based precoating adhesive for vulcanized shoes and preparation method thereof |
| CN114163948A (en) * | 2021-12-01 | 2022-03-11 | 广东启沃环境科技有限公司 | High-temperature-resistant waterproof inorganic glue and preparation method and application thereof |
| CN114534532A (en) * | 2022-01-26 | 2022-05-27 | 中联品检(佛山)检验技术有限公司 | Synthetic blood for detecting protective products and preparation method thereof |
| CN114534532B (en) * | 2022-01-26 | 2023-08-25 | 中联品检(佛山)检验技术有限公司 | Synthetic blood for detecting protective product and preparation method thereof |
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Application publication date: 20200417 |