CN111732914A - Formaldehyde-free PVA solid glue and preparation method thereof - Google Patents
Formaldehyde-free PVA solid glue and preparation method thereof Download PDFInfo
- Publication number
- CN111732914A CN111732914A CN201910225153.9A CN201910225153A CN111732914A CN 111732914 A CN111732914 A CN 111732914A CN 201910225153 A CN201910225153 A CN 201910225153A CN 111732914 A CN111732914 A CN 111732914A
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- parts
- formaldehyde
- glue
- stearic acid
- heating
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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
- C09J129/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
- C09J129/02—Homopolymers or copolymers of unsaturated alcohols
- C09J129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- 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
- C09J11/04—Non-macromolecular additives inorganic
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a formaldehyde-free PVA solid gum and a preparation method thereof, comprising the following steps: s1: adding water into a reaction kettle, and heating to 40 ℃; s2: adding polyvinyl alcohol into a reaction kettle, stirring, heating to 70 ℃, and continuing stirring; s3: cooling the liquid obtained in the step S2 to 50 ℃, adding stearic acid, continuously heating to melt the stearic acid, controlling the temperature to be 80-85 ℃, and adding sodium hydroxide to adjust the pH value to 11; s4: glycerin is added to increase the moisture retention and wettability of the glue; s5: PVA modified resin is added to increase the bonding strength of the glue; s6: the preservative is added and the mixture is kept stand for 1 hour, so that the invention limits the components of the raw materials and the relationship between the raw materials and the environmental temperature, thus the finally formed product has the beneficial effects of good stability and high yield, and the environment-friendly material is adopted, thus the invention has the beneficial effects of energy saving, environment protection, economy and high practicability.
Description
Technical Field
The invention belongs to the technical field of glue preparation, and particularly relates to a formaldehyde-free PVA solid glue and a preparation method thereof.
Background
The solid glue is prepared by taking one or more high polymer materials such as polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), acrylic resin, vinyl acetate resin and the like as an adhesive, taking fatty acid salt as an excipient, taking glycerol, propylene glycol, ethylene glycol and the like as moisturizing and anti-freezing agents, taking water as a solvent, reacting in an environment of 70-90 ℃, filling and cooling, and is mainly used for sticking various papers.
At present, PVA solid glue in the domestic market contains free formaldehyde, and because the PVA solid glue is glue for students, the development of glue without formaldehyde is an urgent need of the market.
Disclosure of Invention
The invention aims to provide a formaldehyde-free PVA solid adhesive and a preparation method thereof, and solves the problem that the PVA solid adhesive in the prior art is not environment-friendly.
The technical scheme of the invention is realized as follows:
the preparation method of the formaldehyde-free PVA solid glue comprises the following steps:
s1: adding water into a reaction kettle, and heating to 40 ℃;
s2: adding polyvinyl alcohol into a reaction kettle, stirring, heating to 70 ℃, and continuing stirring;
s3: cooling the liquid obtained in the step S2 to 50 ℃, adding stearic acid, continuously heating to melt the stearic acid, controlling the temperature to be 80-85 ℃, and adding sodium hydroxide to adjust the pH value to 11;
s4: glycerin is added to increase the moisture retention and wettability of the glue;
s5: PVA modified resin is added to increase the bonding strength of the glue;
s6: adding antiseptic, and standing for 1 hr.
Preferably, in step S2, the stirring is continued for 30 minutes after the temperature is raised to 70 ℃.
The formaldehyde-free PVA solid glue comprises the following components in parts by weight: 7-10 parts of polyvinyl alcohol, 10-15 parts of stearic acid, 10-30 parts of sodium hydroxide, 5-10 parts of glycerol, 3-6 parts of PVA modified resin, 1-5 parts of preservative and 40-60 parts of water.
Preferably, the formaldehyde-free PVA solid gum comprises the following components in parts by weight: 8 parts of polyvinyl alcohol, 12 parts of stearic acid, 15 parts of sodium hydroxide, 8 parts of glycerol, 5 parts of PVA modified resin, 2 parts of preservative and 55 parts of water.
In summary, the invention has the advantages that:
according to the formaldehyde-free PVA solid glue and the preparation method thereof, the relationship between the components of the raw materials and the temperature of the raw materials and the environment is limited, so that the finally formed product has the beneficial effects of good stability and high yield, and the environment-friendly material is adopted, so that the formaldehyde-free PVA solid glue has the beneficial effects of energy conservation, environmental protection, economy and high practicability.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, 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 preparation method of the formaldehyde-free PVA solid glue comprises the following steps:
s1: adding water into a reaction kettle, and heating to 40 ℃;
s2: adding polyvinyl alcohol into a reaction kettle, stirring, heating to 70 ℃, and continuing stirring;
s3: cooling the liquid obtained in the step S2 to 50 ℃, adding stearic acid, continuously heating to melt the stearic acid, controlling the temperature to be 80-85 ℃, and adding sodium hydroxide to adjust the pH value to 11;
s4: glycerin is added to increase the moisture retention and wettability of the glue;
s5: PVA modified resin is added to increase the bonding strength of the glue;
s6: adding antiseptic, and standing for 1 hr.
In step S2, the temperature was raised to 70 ℃ and the stirring was continued for 30 minutes.
The formaldehyde-free PVA solid glue comprises the following components in parts by weight: 8 parts of polyvinyl alcohol, 12 parts of stearic acid, 15 parts of sodium hydroxide, 8 parts of glycerol, 5 parts of PVA modified resin, 2 parts of preservative and 55 parts of water.
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 invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The preparation method of the formaldehyde-free PVA solid glue is characterized by comprising the following steps: the method comprises the following steps:
s1: adding water into a reaction kettle, and heating to 40 ℃;
s2: adding polyvinyl alcohol into a reaction kettle, stirring, heating to 70 ℃, and continuing stirring;
s3: cooling the liquid obtained in the step S2 to 50 ℃, adding stearic acid, continuously heating to melt the stearic acid, controlling the temperature to be 80-85 ℃, and adding sodium hydroxide to adjust the pH value to 11;
s4: glycerin is added to increase the moisture retention and wettability of the glue;
s5: PVA modified resin is added to increase the bonding strength of the glue;
s6: adding antiseptic, and standing for 1 hr.
2. The method for preparing formaldehyde-free PVA solid gum according to claim 1, characterized in that: in step S2, the temperature was raised to 70 ℃ and the stirring was continued for 30 minutes.
3. The formaldehyde-free PVA solid glue is characterized in that: comprises the following components in parts by weight: 7-10 parts of polyvinyl alcohol, 10-15 parts of stearic acid, 10-30 parts of sodium hydroxide, 5-10 parts of glycerol, 3-6 parts of PVA modified resin, 1-5 parts of preservative and 40-60 parts of water.
4. The formaldehyde-free PVA solid gum according to claim 3, characterized in that: comprises the following components in parts by weight: 8 parts of polyvinyl alcohol, 12 parts of stearic acid, 15 parts of sodium hydroxide, 8 parts of glycerol, 5 parts of PVA modified resin, 2 parts of preservative and 55 parts of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225153.9A CN111732914A (en) | 2019-03-25 | 2019-03-25 | Formaldehyde-free PVA solid glue and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225153.9A CN111732914A (en) | 2019-03-25 | 2019-03-25 | Formaldehyde-free PVA solid glue and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111732914A true CN111732914A (en) | 2020-10-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910225153.9A Pending CN111732914A (en) | 2019-03-25 | 2019-03-25 | Formaldehyde-free PVA solid glue and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111732914A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796472A (en) * | 2012-09-06 | 2012-11-28 | 吴江市晴亿纺织有限公司 | Solid gum |
| CN103602292A (en) * | 2013-10-20 | 2014-02-26 | 安徽嘉木橡塑工业有限公司 | Solid glue |
| CN105368349A (en) * | 2015-12-21 | 2016-03-02 | 朱秀琴 | Solid glue |
| CN107400475A (en) * | 2017-09-19 | 2017-11-28 | 宁波百仕高联合工业有限公司 | A kind of environment-friendly type PVA solid gums and preparation method thereof |
-
2019
- 2019-03-25 CN CN201910225153.9A patent/CN111732914A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796472A (en) * | 2012-09-06 | 2012-11-28 | 吴江市晴亿纺织有限公司 | Solid gum |
| CN103602292A (en) * | 2013-10-20 | 2014-02-26 | 安徽嘉木橡塑工业有限公司 | Solid glue |
| CN105368349A (en) * | 2015-12-21 | 2016-03-02 | 朱秀琴 | Solid glue |
| CN107400475A (en) * | 2017-09-19 | 2017-11-28 | 宁波百仕高联合工业有限公司 | A kind of environment-friendly type PVA solid gums and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 徐艳英 等: "环保型固体胶棒的研制", 《中国胶粘剂》 * |
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201002 |
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| RJ01 | Rejection of invention patent application after publication |