CN102618212B - Hot melt adhesive and preparation process and application thereof - Google Patents
Hot melt adhesive and preparation process and application thereof Download PDFInfo
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- CN102618212B CN102618212B CN201210108362.3A CN201210108362A CN102618212B CN 102618212 B CN102618212 B CN 102618212B CN 201210108362 A CN201210108362 A CN 201210108362A CN 102618212 B CN102618212 B CN 102618212B
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- melt adhesive
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Abstract
The invention relates to adhesives and preparation methods thereof, in particular to a hot melt adhesive and a preparation process and an application thereof. The hot melt adhesive comprises, by mass percentage, 5-10% of polyethylene (PE), 15-25% of starches, 15-25% of ethylene-vinyl acetate copolymers, 5-15% of polyethylene wax and 45-55% of rosin resins. The hot melt adhesive is obtained by the steps of melting, adding the polyethylene wax and antioxidants, adding the rosin resins, vacuumizing, granulating and packaging. According to the hot melt adhesive, natural renewable starches and rosin resins are used as main raw materials, hot melt adhesives which mainly use petroleum as raw materials at present are replaced, renewable resources are saved, the cost is lowered, the problem of raw material shortage of the hot melt adhesives at present is solved, and novel raw material fields of the hot melt adhesive industry are developed. The preparation process is simple in step, high in operability and convenient to popularize and apply. The hot melt adhesive is mainly applied to packaging for shoe counters and case sealing.
Description
Technical field
The present invention relates to glue paste and preparation method thereof, be specifically related to a kind of hot melt adhesive and preparation technology thereof and application.
Background technology
Hot melt adhesive is a kind of plastic tackiness agent, and in certain temperature range, its physical condition changes with temperature change, and chemical property is constant, and it is nonpoisonous and tasteless, belongs to environmental-protecting chemical product.Because melt viscosity sum velocity is fast, nontoxic, adhesion technique is simple, and there is good bond strength and snappiness, be therefore widely used in the bonding of the goods such as various timber, paper, fiber, metal, plastics.
Current hot melt adhesive is all to be made by the by product of oil, more and more shortage of petroleum resources now, because hot melt adhesive is a kind of environment-friendly adhesive, annual consumption is more than 25% to be also to go up increasing therefore hot melt adhesive starting material several times always, also more and more obvious thereby hot melt adhesive is faced with the pressure of cost.
Summary of the invention
In order to overcome above-mentioned defect, the object of the present invention is to provide a kind of hot melt adhesive, mainly utilize recyclable organism raw material, as starch, Gum Rosin substitute existing petroleum products raw material, can not only save renewable resources, and can also reduce costs.
The preparation technology who another object of the present invention is to provide a kind of hot melt adhesive, step is simple, workable.
Another object of the present invention is to provide hot melt adhesive application.
For achieving the above object, the technical solution adopted in the present invention is as follows:
, it comprises following component by percentage to the quality:
PE: 5-10%
Starch: 15-25%
Ethylene-vinyl acetate copolymer: 15-25%
Polyethylene wax: 5-15%
Gum Rosin: 45-55%.
Preferably, hot melt adhesive of the present invention comprises following component by percentage to the quality:
PE： 10%
Starch: 20%
Ethylene-vinyl acetate copolymer: 15%
Polyethylene wax: 5%
Gum Rosin: 50%.
In order to keep the premium properties of hot melt adhesive, improve the work-ing life of hot melt adhesive, hot melt adhesive of the present invention also comprises oxidation inhibitor, the consumption of oxidation inhibitor is 1-5% by percentage to the quality.
A preparation technology for hot melt adhesive, it comprises the following steps
(1) melt: according to formula, PE heated and stirred is extremely melted, after melting, slowly add starch, control temperature and be uniformly mixed simultaneously, obtain PE-starch consolute material, stand-by;
(2) add polyethylene wax and oxidation inhibitor: by reactor heating, then slowly drop into polyethylene wax, ethylene-vinyl acetate copolymer and oxidation inhibitor, and constantly stir, control temperature and melt completely to adding polyethylene wax;
(3) add Gum Rosin: in above-mentioned melting has the reactor of polyethylene wax, slowly add Gum Rosin, control temperature, constantly stir, until Gum Rosin melts completely;
(4) vacuumize: then in aforesaid reaction vessel, add the PE-starch consolute material of melting, control temperature, constantly stir, melt and mix, adding Gum Rosin, control temperature and start to vacuumize;
(5) granulation, packing: after having vacuumized, cooling, granulation packing.
In above-mentioned preparation technology, wherein the consumption of various components is by percentage to the quality: PE:5-10%, starch 15-25%, ethylene-vinyl acetate copolymer: 15-25%, polyethylene wax 5-15%, Gum Rosin 45-55%.
In above-mentioned preparation technology, temperature is controlled at 130-140 ℃ in step (1), in dissolution process with passing into nitrogen protection.
In above-mentioned preparation technology, in step (2), reactor is heated to 120 ℃, and during stirring, temperature is controlled at 140-150 ℃.
In above-mentioned preparation technology, the amount that adds Gum Rosin in step (3) is the 30-50% of total amount in Gum Rosin.
In above-mentioned preparation technology, in step (4), during stirring, temperature is controlled at 130-140 ℃, and while vacuumizing, temperature is also controlled at 130-140 ℃.
Hot melt adhesive of the present invention is applied to footwear material port treasured and joint sealing use is packed.During use, directly solution heat melten gel bonds after applying again.
Compared to existing technology, beneficial effect of the present invention is: hot melt adhesive of the present invention is faint yellow opaque solid, viscosity: 1000-1500cps, softening temperature: 105-115 degree.It is main raw material that hot melt adhesive of the present invention adopts starch and the Gum Rosin of natural reproducible, substituted the main hot melt adhesive that adopts petroleum at present, can not only save renewable resources, and can also reduce costs, solved the nervous problem of current hot melt adhesive starting material, for hot melt adhesive industry has been opened up new starting material field.Preparation technology of the present invention, step is simple, workable, conveniently applies.
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment
It is below the preferred embodiment of the invention.
Embodiment 1
A preparation technology for hot melt adhesive, it comprises the following steps:
By mass percent is heated to 140 ℃ by PE10%, be stirred to melting, after melting, slowly add starch 20%, control temperature and be uniformly mixed at 130 ℃ simultaneously, obtain PE-starch consolute material, stand-by; Reactor is heated to 120 ℃, then slowly drops into polyethylene wax 5%, ethylene-vinyl acetate copolymer 15% and oxidation inhibitor 1%, and constantly stir, control 150 ℃ of temperature to adding polyethylene wax, ethylene-vinyl acetate copolymer melts completely; In aforesaid reaction vessel, slowly add Gum Rosin 20%, control 150 ℃ of temperature, constantly stir, until Gum Rosin melts completely; Then the PE-starch consolute material that adds melting in reactor, controls temperature, constantly stirs, and melts and mixes, and at the Gum Rosin that adds remaining 30%, controls 130 ℃ of temperature and starts to vacuumize; After 30 minutes, after having vacuumized, cooling, granulation packing; Wherein PE10%, starch 20%, ethylene-vinyl acetate copolymer 15%, polyethylene wax 5%, Gum Rosin 50% by mass percentage.The hot melt adhesive finally obtaining is faint yellow opaque solid, and viscosity is 1200cps, softening temperature: 105 ℃.
Embodiment 2
A preparation technology for hot melt adhesive, it comprises the following steps:
By mass percent is heated to 140 ℃ by PE5%, be stirred to melting, after melting, slowly add starch 20%, control temperature and be uniformly mixed at 130 ℃ simultaneously, obtain PE-starch consolute material, stand-by; Reactor is heated to 120 ℃, then slowly drops into polyethylene wax 5%, ethylene-vinyl acetate copolymer 15% and oxidation inhibitor 1%, and constantly stir, control 150 ℃ of temperature to adding polyethylene wax, ethylene-vinyl acetate copolymer melts completely; In aforesaid reaction vessel, slowly add Gum Rosin 20%, control 150 ℃ of temperature, constantly stir, until Gum Rosin melts completely; Then the PE-starch consolute material that adds melting in reactor, controls temperature, constantly stirs, and melts and mixes, and at the Gum Rosin that adds remaining 35%, controls 130 ℃ of temperature and starts to vacuumize; After 30 minutes, after having vacuumized, cooling, granulation packing; Wherein PE10%, starch 20%, ethylene-vinyl acetate copolymer 15%, polyethylene wax 5%, Gum Rosin 55% by mass percentage.The hot melt adhesive finally obtaining is faint yellow opaque solid, and viscosity is 1000cps, softening temperature: 110 ℃.
Embodiment 3
A preparation technology for hot melt adhesive, it comprises the following steps:
By mass percent is heated to 140 ℃ by PE10%, be stirred to melting, after melting, slowly add starch 15%, control temperature and be uniformly mixed at 130 ℃ simultaneously, obtain PE-starch consolute material, stand-by; Reactor is heated to 120 ℃, then slowly drops into polyethylene wax 15%, ethylene-vinyl acetate copolymer 15% and oxidation inhibitor 1%, and constantly stir, control 150 ℃ of temperature to adding polyethylene wax, ethylene-vinyl acetate copolymer melts completely; In aforesaid reaction vessel, slowly add Gum Rosin 20%, control 150 ℃ of temperature, constantly stir, until Gum Rosin melts completely; Then the PE-starch consolute material that adds melting in reactor, controls temperature, constantly stirs, and melts and mixes, and at the Gum Rosin that adds remaining 25%, controls 130 ℃ of temperature and starts to vacuumize; After 30 minutes, after having vacuumized, cooling, granulation packing; Wherein PE10%, starch 15%, ethylene-vinyl acetate copolymer 15%, polyethylene wax 15%, Gum Rosin 45% by mass percentage.The hot melt adhesive finally obtaining is faint yellow opaque solid, and viscosity is 1500cps, softening temperature: 115 ℃.
Above-mentioned embodiment is only the preferred embodiment of the present invention; can not limit the scope of protection of the invention with this, the variation of any unsubstantiality that those skilled in the art does on basis of the present invention and replacement all belong to the present invention's scope required for protection.
Claims (8)
1. a hot melt adhesive, is characterized in that: it comprises following component by percentage to the quality
PE: 5-10%
Starch: 15-25%
Ethylene-vinyl acetate copolymer: 15-25%
Polyethylene wax: 5-15%
Gum Rosin: 45-55%.
2. hot melt adhesive according to claim 1, is characterized in that: it also comprises oxidation inhibitor, and the consumption of oxidation inhibitor is 1-5% by percentage to the quality.
3. a preparation technology for hot melt adhesive, is characterized in that: it comprises the following steps
(1) melt: according to formula, PE heated and stirred is extremely melted, after melting, slowly add starch, control temperature and be uniformly mixed simultaneously, obtain PE-starch consolute material, stand-by;
(2) add polyethylene wax and oxidation inhibitor: by reactor heating, then slowly drop into polyethylene wax, ethylene-vinyl acetate copolymer and oxidation inhibitor, and constantly stir, control temperature and melt completely to adding polyethylene wax;
(3) add Gum Rosin: in above-mentioned melting has the reactor of polyethylene wax, slowly add Gum Rosin, control temperature, constantly stir, until Gum Rosin melts completely;
(4) vacuumize: then in aforesaid reaction vessel, add the PE-starch consolute material of melting, control temperature, constantly stir, melt and mix, adding Gum Rosin, control temperature and start to vacuumize;
(5) granulation, packing: after having vacuumized, cooling, granulation packing;
Wherein the consumption of various components is by percentage to the quality: PE:5-10%, starch 15-25%, ethylene-vinyl acetate copolymer: 15-25%, polyethylene wax 5-15%, Gum Rosin 45-55%.
4. the preparation technology of hot melt adhesive according to claim 3, is characterized in that: in step (1), temperature is controlled at 130-140 ℃, in fusion processes with passing into nitrogen protection.
5. the preparation technology of hot melt adhesive according to claim 3, is characterized in that: in step (2), reactor is heated to 120 ℃, and during stirring, temperature is controlled at 140-150 ℃.
6. the preparation technology of hot melt adhesive according to claim 3, is characterized in that: the amount that adds Gum Rosin in step (3) is the 30-50% of total amount in Gum Rosin.
7. the preparation technology of hot melt adhesive according to claim 3, is characterized in that: in step (4), during stirring, temperature is controlled at 130-140 ℃, and while vacuumizing, temperature is also controlled at 130-140 ℃.
8. hot melt adhesive as claimed in claim 1 is applied to the precious and joint sealing use in footwear material port and packs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210108362.3A CN102618212B (en) | 2012-04-13 | 2012-04-13 | Hot melt adhesive and preparation process and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210108362.3A CN102618212B (en) | 2012-04-13 | 2012-04-13 | Hot melt adhesive and preparation process and application thereof |
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| CN102618212A CN102618212A (en) | 2012-08-01 |
| CN102618212B true CN102618212B (en) | 2014-02-12 |
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| CN201210108362.3A Active CN102618212B (en) | 2012-04-13 | 2012-04-13 | Hot melt adhesive and preparation process and application thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103289606B (en) * | 2013-05-07 | 2016-01-06 | 安徽金门工贸有限公司 | A kind of Hot-melt adhesives for shoemaking and preparation method thereof |
| CN104312482B (en) * | 2014-09-22 | 2017-03-22 | 井冈山大学 | Preparation method of rosin / starch based biodegradable hot melt adhesive |
| CN104497914A (en) * | 2014-11-26 | 2015-04-08 | 上海邦中新材料有限公司 | Bonding resin and preparation method thereof |
| CN111543738B (en) * | 2020-02-25 | 2022-03-18 | 杭州锴越新材料有限公司 | Preparation method of hot-melt harbour material synthesized by natural cassava |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1011977B (en) * | 1987-02-26 | 1991-03-13 | 山东省新材料研究所 | Instant solidifying hot-melt adhesive |
| CN1117130C (en) * | 2000-10-26 | 2003-08-06 | 中国石油化工股份有限公司 | Hot fusible adhesive for package |
| CN101280162B (en) * | 2008-05-29 | 2010-06-02 | 同济大学 | Preparation of low-cost hot-melt adhesive |
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