CN111892890A - Environment-friendly composite glue for PVC paper and preparation method thereof - Google Patents
Environment-friendly composite glue for PVC paper and preparation method thereof Download PDFInfo
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- CN111892890A CN111892890A CN202010812089.7A CN202010812089A CN111892890A CN 111892890 A CN111892890 A CN 111892890A CN 202010812089 A CN202010812089 A CN 202010812089A CN 111892890 A CN111892890 A CN 111892890A
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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
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic and acyclic or carbocyclic 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
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/34—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds and acyclic or carbocyclic compounds
- C08G12/36—Ureas; Thioureas
- C08G12/38—Ureas; Thioureas and melamines
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses an environment-friendly composite glue for PVC paper and a preparation method thereof, wherein the manufacturing material of the environment-friendly composite glue for PVC paper comprises, by mass, 40-45 parts of formaldehyde, 35-38 parts of urea, 0.5-1 part of melamine, 1-2 parts of a catalyst and 0.4-0.5 part of a curing agent. The manufacturing method adopted by the invention is simple and easy to operate, and can be used for producing the environment-friendly composite glue for PVC paper in large batch; the formaldehyde and the urea are added in batches for reaction, and the PH value of the formaldehyde and the urea is continuously adjusted, so that the formaldehyde in the environment-friendly PVC paper composite glue can be effectively removed, and the influence on the body health of a user due to the fact that a large amount of formaldehyde is left in the PVC paper after gluing is prevented.
Description
Technical Field
The invention relates to glue, in particular to environment-friendly composite glue for PVC paper and a preparation method thereof.
Background
PVC paper is mostly attached to the surface of a wall panel, namely deep embossing wallpaper and resin wallpaper, wood pulp fiber paper and non-woven fiber paper are used as base materials, high-grade resin slurry is coated on the surface of the base materials, professional deep embossing production equipment is used, different printing wheels are adopted according to different patterns, and the required wallpaper patterns are printed on the surface of the wallpaper. After the wallpaper is softened, the surface of the wallpaper is pressed by the embossing roller to generate corresponding texture effect. And multiple processes such as drying, high temperature, cooling and the like are also included in the wallpaper, so that the three-dimensional appearance and the environmental protection performance of the wallpaper are guaranteed.
After the production and manufacture of the PVC paper are finished, the PVC paper is usually attached to the surface of the wall panel for protection and decoration, glue is usually coated on the PVC paper in the production and manufacture process, a certain amount of formaldehyde may remain in the use process of the composite glue for PVC paper due to the particularity of the manufacturing raw materials, but the excessive residue of the formaldehyde may affect the health condition of a user, and therefore, an environment-friendly composite glue for PVC paper and a preparation method thereof are provided.
Disclosure of Invention
The invention aims to provide environment-friendly composite glue for PVC paper and a preparation method thereof, and aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the environment-friendly composite glue for the PVC paper comprises, by mass, 40-45 parts of formaldehyde, 35-38 parts of urea, 0.5-1 part of melamine, 1-2 parts of a catalyst and 0.4-0.5 part of a curing agent.
Further, the preparation method of the environment-friendly composite glue for PVC paper comprises the following steps:
(1) weighing materials: weighing formaldehyde, urea, melamine, a catalyst and a curing agent in corresponding parts by weight for later use;
(2) primary reaction: placing 35-40% of formaldehyde and 40-50% of urea weighed in the step (1) in a reaction kettle for heating, stirring the formaldehyde and the urea in the heating process, heating to 75-78 ℃ in the stirring process, maintaining the corresponding temperature, and preserving the heat for 30-35min while stirring to form a mixed solution A;
(3) adjusting acidity and alkalinity: firstly, detecting the pH value of the mixed solution A, then adjusting the pH value of the mixed solution A obtained in the step (2) by using a catalyst, adjusting the pH value of the mixed solution A to be between 5.5 and 6.4, and naturally cooling the mixed solution A to be between 35 and 40 ℃ for later use after the pH value is adjusted;
(4) and (3) secondary reaction: placing the residual formaldehyde and urea in the step (1) into a mixed solution A in a reaction kettle for heating, stirring the manufacturing raw materials in the reaction kettle in the heating process, heating the raw materials to 92-95 ℃ in the stirring process, maintaining the corresponding temperature, preserving the heat for 15-20min while stirring to form a mixed solution B, naturally cooling the mixed solution B to 35-40 ℃ for later use, adding a corresponding mass part of melamine into the mixed solution B after cooling, and fully stirring to obtain a mixed solution C;
(5) acid-base secondary regulation: firstly, detecting the pH value of the mixed solution C, then adjusting the pH value of the mixed solution C by using a catalyst, adjusting the pH value of the mixed solution C in the step (4) to 7.4-7.8, and naturally cooling the mixed solution A to 35-40 ℃ for later use after the pH value is adjusted;
(6) and (3) curing: and (4) adding a curing agent in a corresponding mass part into the mixed solution C obtained in the step (4), wherein the curing agent needs to be slowly added in the adding process, the curing agent needs to be continuously stirred in the adding process, and after the curing agent is added, the pH value is adjusted by using a catalyst, so that the environment-friendly PVC paper composite glue can be obtained.
Further, the catalyst is divided into an acid catalyst and a basic catalyst, the acid catalyst is a hydrogen chloride solution, the basic catalyst is a sodium hydroxide solution, the acid catalyst is added when the mixed solution needs to be adjusted to be acidic, and the basic catalyst is added when the mixed solution needs to be adjusted to be basic.
Furthermore, the curing agent is a polyamide curing agent.
Further, the pH value of the environment-friendly PVC paper manufactured by the composite glue is 7.4-8.2.
The manufacturing method adopted by the invention is simple and easy to operate, and can be used for producing the environment-friendly composite glue for PVC paper in large batch;
the formaldehyde and the urea are added in batches for reaction, and the PH value of the formaldehyde and the urea is continuously adjusted, so that the formaldehyde in the environment-friendly PVC paper composite glue can be effectively removed, and the influence on the body health of a user due to the fact that a large amount of formaldehyde is left in the PVC paper after gluing is prevented.
Detailed Description
The 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the environment-friendly composite glue for the PVC paper comprises 40 parts of formaldehyde, 35 parts of urea, 0.5 part of melamine, 1 part of catalyst and 0.4 part of curing agent by mass.
Further, the preparation method of the environment-friendly composite glue for PVC paper comprises the following steps:
(1) weighing materials: weighing formaldehyde, urea, melamine, a catalyst and a curing agent in corresponding parts by weight for later use;
(2) primary reaction: placing 35% by mass of formaldehyde and 40% by mass of urea weighed in the step (1) into a reaction kettle for heating, stirring the formaldehyde and the urea in the heating process, heating the formaldehyde and the urea to 75 ℃ in the stirring process, maintaining the corresponding temperature, and preserving the heat for 30min while stirring to form a mixed solution A;
(3) adjusting acidity and alkalinity: firstly, detecting the pH value of the mixed solution A, then adjusting the pH value of the mixed solution A obtained in the step (2) by using a catalyst, adjusting the pH value of the mixed solution A to 5.5, and naturally cooling the mixed solution A to 35 ℃ for later use after the pH value is adjusted;
(4) and (3) secondary reaction: placing the residual formaldehyde and urea in the step (1) into a mixed solution A in a reaction kettle for heating, stirring the manufacturing raw materials in the reaction kettle in the heating process, heating the raw materials to 92 ℃ in the stirring process, maintaining the corresponding temperature, preserving the heat for 15min while stirring to form a mixed solution B, naturally cooling the mixed solution B to 35 ℃ for later use, adding a corresponding mass part of melamine into the mixed solution B after the mixed solution B is cooled, and fully stirring the melamine to obtain a mixed solution C;
(5) acid-base secondary regulation: firstly, detecting the pH value of the mixed solution C, then adjusting the pH value of the mixed solution C by using a catalyst, adjusting the pH value of the mixed solution C in the step (4) to 7.4, and naturally cooling the mixed solution A to 35 ℃ for later use after the pH value is adjusted;
(6) and (3) curing: and (4) adding a curing agent in a corresponding mass part into the mixed solution C obtained in the step (4), wherein the curing agent needs to be slowly added in the adding process, the curing agent needs to be continuously stirred in the adding process, and after the curing agent is added, the pH value is adjusted by using a catalyst, so that the environment-friendly PVC paper composite glue can be obtained.
Further, the catalyst is divided into an acid catalyst and a basic catalyst, the acid catalyst is a hydrogen chloride solution, the basic catalyst is a sodium hydroxide solution, the acid catalyst is added when the mixed solution needs to be adjusted to be acidic, and the basic catalyst is added when the mixed solution needs to be adjusted to be basic.
Furthermore, the curing agent is a polyamide curing agent.
Further, the pH value of the environment-friendly PVC paper manufactured by the composite glue is 7.4.
Example two:
the environment-friendly composite glue for the PVC paper comprises 45 parts of formaldehyde, 38 parts of urea, 1 part of melamine, 2 parts of a catalyst and 0.5 part of a curing agent in parts by mass.
Further, the preparation method of the environment-friendly composite glue for PVC paper comprises the following steps:
(1) weighing materials: weighing formaldehyde, urea, melamine, a catalyst and a curing agent in corresponding parts by weight for later use;
(2) primary reaction: placing 40% by mass of formaldehyde and 50% by mass of urea weighed in the step (1) into a reaction kettle for heating, stirring the formaldehyde and the urea in the heating process, heating the formaldehyde and the urea to 78 ℃ in the stirring process, maintaining the corresponding temperature, and preserving the heat for 35min while stirring to form a mixed solution A;
(3) adjusting acidity and alkalinity: firstly, detecting the pH value of the mixed solution A, then adjusting the pH value of the mixed solution A obtained in the step (2) by using a catalyst, adjusting the pH value of the mixed solution A to 6.4, and naturally cooling the mixed solution A to 40 ℃ for later use after the pH value is adjusted;
(4) and (3) secondary reaction: placing the residual formaldehyde and urea in the step (1) into a mixed solution A in a reaction kettle for heating, stirring the manufacturing raw materials in the reaction kettle in the heating process, heating the raw materials to 95 ℃ in the stirring process, maintaining the corresponding temperature, preserving the heat for 20min while stirring to form a mixed solution B, naturally cooling the mixed solution B to 40 ℃ for later use, adding a corresponding mass part of melamine into the mixed solution B after the mixed solution B is cooled, and fully stirring the melamine to obtain a mixed solution C;
(5) acid-base secondary regulation: firstly, detecting the pH value of the mixed solution C, then adjusting the pH value of the mixed solution C by using a catalyst, adjusting the pH value of the mixed solution C in the step (4) to 7.8, and naturally cooling the mixed solution A to 40 ℃ for later use after the pH value is adjusted;
(6) and (3) curing: and (4) adding a curing agent in a corresponding mass part into the mixed solution C obtained in the step (4), wherein the curing agent needs to be slowly added in the adding process, the curing agent needs to be continuously stirred in the adding process, and after the curing agent is added, the pH value is adjusted by using a catalyst, so that the environment-friendly PVC paper composite glue can be obtained.
Further, the catalyst is divided into an acid catalyst and a basic catalyst, the acid catalyst is a hydrogen chloride solution, the basic catalyst is a sodium hydroxide solution, the acid catalyst is added when the mixed solution needs to be adjusted to be acidic, and the basic catalyst is added when the mixed solution needs to be adjusted to be basic.
Furthermore, the curing agent is a polyamide curing agent.
Further, the pH value of the environment-friendly PVC paper manufactured by the composite glue is 8.2.
Example three:
the environment-friendly composite glue for the PVC paper comprises 43 parts of formaldehyde, 36 parts of urea, 0.8 part of melamine, 1.5 parts of catalyst and 0.45 part of curing agent by mass.
Further, the preparation method of the environment-friendly composite glue for PVC paper comprises the following steps:
(1) weighing materials: weighing formaldehyde, urea, melamine, a catalyst and a curing agent in corresponding parts by weight for later use;
(2) primary reaction: putting 38% of formaldehyde and 45% of urea weighed in the step (1) in a reaction kettle for heating, stirring the formaldehyde and the urea in the heating process, heating to 76 ℃ in the stirring process, maintaining the corresponding temperature, and preserving the heat for 33min while stirring to form a mixed solution A;
(3) adjusting acidity and alkalinity: firstly, detecting the pH value of the mixed solution A, then adjusting the pH value of the mixed solution A obtained in the step (2) by using a catalyst, adjusting the pH value of the mixed solution A to 6, and naturally cooling the mixed solution A to 38 ℃ for later use after the pH value is adjusted;
(4) and (3) secondary reaction: placing the residual formaldehyde and urea in the step (1) into a mixed solution A in a reaction kettle for heating, stirring the manufacturing raw materials in the reaction kettle in the heating process, heating to 93 ℃ in the stirring process, maintaining the corresponding temperature, preserving the heat for 18min while stirring to form a mixed solution B, naturally cooling the mixed solution B to 37 ℃ for later use, adding a corresponding mass part of melamine into the mixed solution B after cooling, and fully stirring to obtain a mixed solution C;
(5) acid-base secondary regulation: firstly, detecting the pH value of the mixed solution C, then adjusting the pH value of the mixed solution C by using a catalyst, adjusting the pH value of the mixed solution C in the step (4) to 7.6, and naturally cooling the mixed solution A to 38 ℃ for later use after the pH value is adjusted;
(6) and (3) curing: and (4) adding a curing agent in a corresponding mass part into the mixed solution C obtained in the step (4), wherein the curing agent needs to be slowly added in the adding process, the curing agent needs to be continuously stirred in the adding process, and after the curing agent is added, the pH value is adjusted by using a catalyst, so that the environment-friendly PVC paper composite glue can be obtained.
Further, the catalyst is divided into an acid catalyst and a basic catalyst, the acid catalyst is a hydrogen chloride solution, the basic catalyst is a sodium hydroxide solution, the acid catalyst is added when the mixed solution needs to be adjusted to be acidic, and the basic catalyst is added when the mixed solution needs to be adjusted to be basic.
Furthermore, the curing agent is a polyamide curing agent.
Further, the pH value of the environment-friendly PVC paper manufactured by the composite glue is 7.8.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides an environment-friendly PVC is compound glue for paper which characterized in that: the manufacturing material of the environment-friendly composite glue for PVC paper comprises, by mass, 40-45 parts of formaldehyde, 35-38 parts of urea, 0.5-1 part of melamine, 1-2 parts of a catalyst and 0.4-0.5 part of a curing agent.
2. The environment-friendly composite glue for PVC paper as claimed in claim 1, characterized in that: the preparation method of the environment-friendly composite glue for PVC paper comprises the following steps:
(1) weighing materials: weighing formaldehyde, urea, melamine, a catalyst and a curing agent in corresponding parts by weight for later use;
(2) primary reaction: placing 35-40% of formaldehyde and 40-50% of urea weighed in the step (1) in a reaction kettle for heating, stirring the formaldehyde and the urea in the heating process, heating to 75-78 ℃ in the stirring process, maintaining the corresponding temperature, and preserving the heat for 30-35min while stirring to form a mixed solution A;
(3) adjusting acidity and alkalinity: firstly, detecting the pH value of the mixed solution A, then adjusting the pH value of the mixed solution A obtained in the step (2) by using a catalyst, adjusting the pH value of the mixed solution A to be between 5.5 and 6.4, and naturally cooling the mixed solution A to be between 35 and 40 ℃ for later use after the pH value is adjusted;
(4) and (3) secondary reaction: placing the residual formaldehyde and urea in the step (1) into a mixed solution A in a reaction kettle for heating, stirring the manufacturing raw materials in the reaction kettle in the heating process, heating the raw materials to 92-95 ℃ in the stirring process, maintaining the corresponding temperature, preserving the heat for 15-20min while stirring to form a mixed solution B, naturally cooling the mixed solution B to 35-40 ℃ for later use, adding a corresponding mass part of melamine into the mixed solution B after cooling, and fully stirring to obtain a mixed solution C;
(5) acid-base secondary regulation: firstly, detecting the pH value of the mixed solution C, then adjusting the pH value of the mixed solution C by using a catalyst, adjusting the pH value of the mixed solution C in the step (4) to 7.4-7.8, and naturally cooling the mixed solution A to 35-40 ℃ for later use after the pH value is adjusted;
(6) and (3) curing: and (4) adding a curing agent in a corresponding mass part into the mixed solution C obtained in the step (4), wherein the curing agent needs to be slowly added in the adding process, the curing agent needs to be continuously stirred in the adding process, and after the curing agent is added, the pH value is adjusted by using a catalyst, so that the environment-friendly PVC paper composite glue can be obtained.
3. The environment-friendly composite glue for PVC paper as claimed in claim 1, characterized in that: the catalyst is divided into an acid catalyst and a basic catalyst, the acid catalyst is a hydrogen chloride solution, the basic catalyst is a sodium hydroxide solution, the acid catalyst is added when the mixed solution needs to be adjusted to be acidic, and the basic catalyst is added when the mixed solution needs to be adjusted to be basic.
4. The environment-friendly composite glue for PVC paper as claimed in claim 1, characterized in that: the curing agent is a polyamide curing agent.
5. The environment-friendly composite glue for PVC paper as claimed in claim 1, characterized in that: the pH value of the environment-friendly PVC paper manufactured by the composite glue is 7.4-8.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010812089.7A CN111892890A (en) | 2020-08-13 | 2020-08-13 | Environment-friendly composite glue for PVC paper and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010812089.7A CN111892890A (en) | 2020-08-13 | 2020-08-13 | Environment-friendly composite glue for PVC paper and preparation method thereof |
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| CN111892890A true CN111892890A (en) | 2020-11-06 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4246152A (en) * | 1978-04-07 | 1981-01-20 | Patentes Y Novedades, S.A. | Urea/formaldehyde adhesives |
| CN105507550A (en) * | 2016-01-20 | 2016-04-20 | 久盛地板有限公司 | New material for electric heating parquet with built-in heating layer |
| CN105969275A (en) * | 2016-05-24 | 2016-09-28 | 普洱林达木业有限责任公司 | Preparation method of environment-friendly urea-formaldehyde resin adhesive |
| CN108359068A (en) * | 2018-01-17 | 2018-08-03 | 四川农业大学 | A kind of glued board environment-friendly modified Lauxite and preparation method thereof |
-
2020
- 2020-08-13 CN CN202010812089.7A patent/CN111892890A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4246152A (en) * | 1978-04-07 | 1981-01-20 | Patentes Y Novedades, S.A. | Urea/formaldehyde adhesives |
| CN105507550A (en) * | 2016-01-20 | 2016-04-20 | 久盛地板有限公司 | New material for electric heating parquet with built-in heating layer |
| CN105969275A (en) * | 2016-05-24 | 2016-09-28 | 普洱林达木业有限责任公司 | Preparation method of environment-friendly urea-formaldehyde resin adhesive |
| CN108359068A (en) * | 2018-01-17 | 2018-08-03 | 四川农业大学 | A kind of glued board environment-friendly modified Lauxite and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 程侣柏: "《精细化工产品的合成及应用》", 31 August 2002 * |
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Application publication date: 20201106 |