CN114702906A - Hot melt adhesive and preparation method and application thereof - Google Patents
Hot melt adhesive and preparation method and application thereof Download PDFInfo
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- CN114702906A CN114702906A CN202210229580.6A CN202210229580A CN114702906A CN 114702906 A CN114702906 A CN 114702906A CN 202210229580 A CN202210229580 A CN 202210229580A CN 114702906 A CN114702906 A CN 114702906A
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- hot melt
- melt adhesive
- resin
- vinyl acetate
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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
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
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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
- 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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- 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
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/08—Copolymers of ethene
- C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C09J123/0853—Vinylacetate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention belongs to the technical field of resin, and particularly relates to a hot melt adhesive as well as a preparation method and application thereof. The hot melt adhesive disclosed by the invention is prepared from the following raw materials in parts by weight: 40-60 parts of ethylene-vinyl acetate copolymer, 20-40 parts of vinyl acetate, 6-10 parts of hydroxyapatite and 20-50 parts of resin. The hot melt adhesive of the invention does not produce smoke dust and taste in the production process, can realize no toxicity, no formaldehyde and no pollution, and greatly improves the processing environment during processing; the melting point of the hot melt adhesive is reduced, the fluidity is better, and the penetration force and the adhesive force of the hot melt adhesive are stronger.
Description
Technical Field
The invention belongs to the technical field of resin, and particularly relates to a hot melt adhesive as well as a preparation method and application thereof.
Background
The Hot melt adhesive (English name: Hot Glue) is a plastic adhesive, the physical state of which changes with the temperature within a certain temperature range, but the chemical property is not changed, and the Hot melt adhesive is nontoxic and tasteless, and belongs to an environment-friendly chemical product. The product is solid, so the product is convenient to package, transport and store, and has no solvent, pollution and toxicity.
The EVA hot melt adhesive is a solid meltable polymer which does not need a solvent and contains 100 percent of moisture; it is solid at normal temperature, and is heated to melt to certain temperature to become fluid liquid with certain viscosity. The molten EVA hot melt adhesive is light brown or white. The EVA hot melt adhesive consists of basic resin, tackifier, viscosity regulator, antioxidant and other components.
The hot melt adhesive on the market at present basically has the following disadvantages in the preparation process: 1. during the production process, larger smoke dust and pungent smell can be generated, and the environment is polluted; 2. when the hot melt adhesive produced by the existing process is used, the hot melt adhesive needs to be melted at a higher temperature; 3. in the production process, the temperature needs to be 200 ℃ for a long time, the power consumption of production equipment is large, and the production cost is high.
The present invention has been made in view of the above problems.
Disclosure of Invention
The invention aims to provide a hot melt adhesive.
The invention also aims to provide a preparation method of the hot melt adhesive.
The invention further aims to provide application of the hot melt adhesive in binding books and periodicals.
According to the specific embodiment of the invention, the hot melt adhesive is prepared from the following raw materials in parts by weight: 40-60 parts of ethylene-vinyl acetate copolymer, 20-40 parts of vinyl acetate, 6-10 parts of hydroxyapatite and 20-50 parts of resin.
In the invention, the ethylene-vinyl acetate copolymer, also called EVA, is odorless, nontoxic, white or light yellow powder or granular low-melting-point polymer, has small molecular weight, and the synthesized hot melt adhesive has low viscosity and good cohesiveness, flexibility and fluidity.
Preferably, ethylene-vinyl acetate copolymers are used which have a vinyl acetate content of generally from 15% to 24%.
Vinyl acetate, i.e. vinyl acetate, of the formula C4H6O2Having a sweet ether tasteThe colorless inflammable liquid has improved adhesion to polar material, raised resin strength, improved machining performance and high coloring performance.
Hydroxyapatite: also known as hydroxyapatite and basic calcium phosphate, is calcium apatite (Ca)5(PO4)3(OH)) natural mineralization, but is often written as (Ca)10(PO4)6(OH)2) In such a way as to highlight that it is composed of two parts: hydroxyl groups and apatite. OH group-Can be replaced by fluoride, chloride and carbonate ions to produce fluorapatite or chloro apatite, wherein calcium ions can be replaced by various metal ions through ion exchange reaction to form M apatite corresponding to the metal ions (M represents metal ions replacing calcium ions). The invention uses hydroxyapatite as the polymeric component of the porous structure, increases the strength and adsorbs all volatile matters.
According to the hot melt adhesive of the embodiment of the invention, the resin is rosin resin or petroleum resin.
Rosin resins are light-colored, have a high softening point, high viscosity, and better resistance to oxidation via high degree of polymerization (dipolymerization), and are completely resistant to crystallization in the liquid state or in solution.
The petroleum resin (hydrocarbon resin) is a thermoplastic resin produced by the processes of pretreatment, polymerization, distillation and the like of C5 and C9 fractions which are by-products generated by petroleum cracking, and is not an oligomer with the molecular weight of 300-3000.
According to the specific embodiment of the invention, the hot melt adhesive is prepared from the following raw materials in parts by weight: 40 parts of ethylene-vinyl acetate copolymer, 20 parts of vinyl acetate, 6 parts of hydroxyapatite and 20 parts of resin.
According to the specific embodiment of the invention, the hot melt adhesive is prepared from the following raw materials in parts by weight: 60 parts of ethylene-vinyl acetate copolymer, 40 parts of vinyl acetate, 10 parts of hydroxyapatite and 50 parts of resin.
According to the specific embodiment of the invention, the hot melt adhesive is prepared from the following raw materials in parts by weight: 50 parts of ethylene-vinyl acetate copolymer, 30 parts of vinyl acetate, 8 parts of hydroxyapatite and 40 parts of resin.
According to the preparation method of the hot melt adhesive, the preparation method comprises the following steps:
(1) grinding hydroxyapatite, mixing with resin,
(2) adding hydroxyapatite and resin into a reaction kettle, and uniformly stirring at the temperature of 170-200 ℃;
(3) adding ethylene-vinyl acetate copolymer and vinyl acetate into a reaction kettle;
(4) controlling the reaction temperature at 110-130 ℃, and discharging acid for 20-50 min;
(5) and reducing the temperature to be below 90 ℃ to obtain the hot melt adhesive.
According to the preparation method of the hot melt adhesive provided by the embodiment of the invention, in the step (2), the hydroxyapatite and the resin are added into the reaction kettle and are uniformly stirred at the temperature of 180 ℃.
Hydroxyapatite and resin particle materials are added into a reaction kettle (heater) with a stirring device, so that the temperature of the reaction kettle is within the range of 170-200 ℃ (the resin is likely to melt when the temperature exceeds 170 ℃, in the processing process, the melting state can be judged by time, the amount of the used materials is different, and the time for complete melting is different), and the materials can be stirred and heated through the reaction kettle, so that the materials are more uniform.
In the material heating process, the temperature of the material can be detected to obtain the melting condition of the resin, and when the resin particles are in a melting state, EVA and vinyl acetate are mixed in proportion and then added into the reaction kettle.
Because the melting points of EVA and vinyl acetate are lower than that of resin, EVA and vinyl acetate can be rapidly melted when added into a reaction kettle, and materials are heated while being stirred in the reaction kettle.
And cooling the molten rubber material in the reaction kettle to 90 ℃, quickly shaping the hot melt adhesive in a block shape when the hot melt adhesive is cooled, cooling and solidifying, and then boxing the cooled hot melt adhesive.
According to the preparation method of the hot melt adhesive, in the step (4), the reaction temperature is controlled at 120 ℃, and acid is discharged for 30 min.
According to the preparation method of the hot melt adhesive, the resin is rosin resin or petroleum resin.
The invention also provides the application of the hot melt adhesive in the aspect of book and periodical binding.
The invention has the beneficial effects that:
the hot melt adhesive of the invention does not produce smoke dust and taste in the production process, can realize no toxicity, no formaldehyde and no pollution, and greatly improves the processing environment during processing;
the melting point of the hot melt adhesive is reduced, the fluidity is better, so that the permeability of the hot melt adhesive is stronger, and the adhesive force is larger;
the invention reduces the power consumption of production equipment, reduces the production cost, improves the environmental protection property of the production environment, improves the energy efficiency ratio and reduces the harm of pungent smell to human bodies.
The hot melt adhesive provided by the invention starts to be cooled and solidified at 90 ℃, and the optimal adhesion effect is achieved at 30 ℃.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1
The hot melt adhesive disclosed by the invention is prepared from the following raw materials in parts by weight: 40 parts of ethylene-vinyl acetate copolymer, 20 parts of vinyl acetate, 7 parts of hydroxyapatite and 25 parts of resin.
The preparation method comprises the following steps:
(1) grinding hydroxyapatite, mixing with resin,
(2) adding hydroxyapatite and resin into a reaction kettle, and uniformly stirring at 170-DEG C;
(3) adding ethylene-vinyl acetate copolymer and vinyl acetate into a reaction kettle;
(4) controlling the reaction temperature at 110 ℃, and discharging acid for 20 min;
(5) and reducing the temperature to be below 90 ℃ to obtain the hot melt adhesive.
Example 2
The hot melt adhesive disclosed by the invention comprises the following raw materials in parts by weight: 50 parts of ethylene-vinyl acetate copolymer, 30 parts of vinyl acetate, 9 parts of hydroxyapatite and 35 parts of resin.
The preparation method comprises the following steps:
(1) grinding hydroxyapatite, mixing with resin,
(2) adding hydroxyapatite and resin into a reaction kettle, and uniformly stirring at 180 ℃;
(3) adding ethylene-vinyl acetate copolymer and vinyl acetate into a reaction kettle;
(4) controlling the reaction temperature at 120 ℃, and discharging acid for 30 min;
(5) and reducing the temperature to be below 90 ℃ to obtain the hot melt adhesive.
Example 3
The hot melt adhesive disclosed by the invention comprises the following raw materials in parts by weight: 60 parts of ethylene-vinyl acetate copolymer, 40 parts of vinyl acetate, 10 parts of hydroxyapatite and 4050 parts of resin.
The preparation method comprises the following steps:
(1) grinding hydroxyapatite, mixing with resin,
(2) adding hydroxyapatite and resin into a reaction kettle, and uniformly stirring at 200 ℃;
(3) adding ethylene-vinyl acetate copolymer and vinyl acetate into a reaction kettle;
(4) controlling the reaction temperature at 130 ℃, and discharging acid for 50 min;
(5) and reducing the temperature to be below 90 ℃ to obtain the hot melt adhesive.
The hot melt adhesive samples of examples 1-3 were sent to the research institute of optical analysis chemical technology in Beijing (chemical laboratory) for testing, and the results are shown in the following table:
TABLE 1 examination results of samples of examples 1 to 3
| Edge bead test | Example 1 | Example 2 | Example 3 |
| Tensile strength (MPa) | 3.5 | 4.2 | 4.1 |
| Melt viscosity (Pa.s) | 2.6 | 3 | 3.2 |
| Elongation at Break (%) | 230 | 253 | 247 |
| Thermal stability (Pa.s) | 1.3 | 1.2 | 1.2 |
| Softening Point (. degree. C.) | 73 | 80 | 83 |
The above experimental reference standards: HG/T3698-.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The hot melt adhesive is characterized by comprising the following raw materials in parts by weight: 40-60 parts of ethylene-vinyl acetate copolymer, 20-40 parts of vinyl acetate, 6-10 parts of hydroxyapatite and 20-50 parts of resin.
2. The hot melt adhesive of claim 1, wherein the resin is a rosin resin or a petroleum resin.
3. The hot melt adhesive according to claim 1 or 2, wherein the hot melt adhesive is prepared from the following raw materials in parts by weight: 40 parts of ethylene-vinyl acetate copolymer, 20 parts of vinyl acetate, 6 parts of hydroxyapatite and 20 parts of resin.
4. The hot melt adhesive according to claim 1 or 2, wherein the hot melt adhesive is prepared from the following raw materials in parts by weight: 60 parts of ethylene-vinyl acetate copolymer, 40 parts of vinyl acetate, 10 parts of hydroxyapatite and 50 parts of resin.
5. The hot melt adhesive according to claim 1 or 2, wherein the hot melt adhesive is prepared from the following raw materials in parts by weight: 50 parts of ethylene-vinyl acetate copolymer, 30 parts of vinyl acetate, 8 parts of hydroxyapatite and 40 parts of resin.
6. The method for preparing a hot melt adhesive according to claim 1, wherein the method comprises the following steps:
(1) grinding hydroxyapatite, mixing with resin,
(2) adding hydroxyapatite and resin into a reaction kettle, and uniformly stirring at the temperature of 170-200 ℃;
(3) adding ethylene-vinyl acetate copolymer and vinyl acetate into a reaction kettle;
(4) controlling the reaction temperature at 110-130 ℃, and discharging acid for 20-50 min;
(5) and reducing the temperature to be below 90 ℃ to obtain the hot melt adhesive.
7. The method for preparing the hot melt adhesive according to claim 6, wherein in the step (2), the hydroxyapatite and the resin are added into a reaction kettle and are uniformly stirred at the temperature of 180 ℃.
8. The method for preparing hot melt adhesive according to claim 6, wherein in the step (4), the reaction temperature is controlled at 120 ℃ and acid is discharged for 30 min.
9. The method for preparing a hot melt adhesive according to claim 6, wherein the resin is a rosin resin or a petroleum resin.
10. The use of the hot melt adhesive of claim 1 for binding books and periodicals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210229580.6A CN114702906A (en) | 2022-03-09 | 2022-03-09 | Hot melt adhesive and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210229580.6A CN114702906A (en) | 2022-03-09 | 2022-03-09 | Hot melt adhesive and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114702906A true CN114702906A (en) | 2022-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210229580.6A Pending CN114702906A (en) | 2022-03-09 | 2022-03-09 | Hot melt adhesive and preparation method and application thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106867268A (en) * | 2017-03-14 | 2017-06-20 | 山东交通学院 | A kind of road modified asphalt |
| CN107805337A (en) * | 2017-10-23 | 2018-03-16 | 东莞市悠悠美居家居制造有限公司 | A kind of vinyl acetate environmental protection tablecloth and its double attaching process |
| CN109852291A (en) * | 2018-12-25 | 2019-06-07 | 广州聚才新材料有限公司 | Adhesive bookbinding carries on the back the universal hot melt adhesive in side and production method |
| CN111303665A (en) * | 2020-04-17 | 2020-06-19 | 武汉工程大学 | Modified hydroxyapatite and application thereof in water-based fireproof coating |
| CN111944456A (en) * | 2020-09-04 | 2020-11-17 | 上海路嘉胶粘剂有限公司 | EVA edge sealing hot melt adhesive without adhesive line and with low adhesive coating amount and preparation method thereof |
| CN113249068A (en) * | 2021-06-30 | 2021-08-13 | 佛山南宝高盛高新材料有限公司 | Thermoplastic polyether-ether-ketone modified hot melt adhesive and preparation method thereof |
-
2022
- 2022-03-09 CN CN202210229580.6A patent/CN114702906A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106867268A (en) * | 2017-03-14 | 2017-06-20 | 山东交通学院 | A kind of road modified asphalt |
| CN107805337A (en) * | 2017-10-23 | 2018-03-16 | 东莞市悠悠美居家居制造有限公司 | A kind of vinyl acetate environmental protection tablecloth and its double attaching process |
| CN109852291A (en) * | 2018-12-25 | 2019-06-07 | 广州聚才新材料有限公司 | Adhesive bookbinding carries on the back the universal hot melt adhesive in side and production method |
| CN111303665A (en) * | 2020-04-17 | 2020-06-19 | 武汉工程大学 | Modified hydroxyapatite and application thereof in water-based fireproof coating |
| CN111944456A (en) * | 2020-09-04 | 2020-11-17 | 上海路嘉胶粘剂有限公司 | EVA edge sealing hot melt adhesive without adhesive line and with low adhesive coating amount and preparation method thereof |
| CN113249068A (en) * | 2021-06-30 | 2021-08-13 | 佛山南宝高盛高新材料有限公司 | Thermoplastic polyether-ether-ketone modified hot melt adhesive and preparation method thereof |
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