CN102898976B - Hot melt adhesive based on revulsive orientation of magnetic particles and preparation method of hot melt adhesive - Google Patents
Hot melt adhesive based on revulsive orientation of magnetic particles and preparation method of hot melt adhesive Download PDFInfo
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- CN102898976B CN102898976B CN201210385432.XA CN201210385432A CN102898976B CN 102898976 B CN102898976 B CN 102898976B CN 201210385432 A CN201210385432 A CN 201210385432A CN 102898976 B CN102898976 B CN 102898976B
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- hot melt
- melt adhesive
- vinyl acetate
- tackifying resin
- ethylene
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Abstract
A hot melt adhesive based on revulsive orientation of magnetic particles consists of a basic hot melt adhesive and inorganic magnetic particles, mass ratios of the inorganic magnetic particles to the basic hot melt adhesive are (1-10) to 20, and components of the basic hot melt adhesive and mass percentages of the components are as follows in percentage by weight: 50 to 70% of ethylene-vinyl acetate copolymer, 20 to 40% of tackifying resin and 5 to 15% of plasticizer. A preparation method of the hot melt adhesive is as follows: adding the tackifying resin into a reaction kettle, heating to a melting point of the tackifying resin, and keeping a temperature; and then stirring, adding the ethylene-vinyl acetate copolymer into the reaction kettle after the tackifying resin is completely molten; adding the plasticizer into the reaction kettle when the tackifying resin and the ethylene-vinyl acetate copolymer are uniformly mixed; adding the inorganic magnetic particles into the reaction kettle after the components of the basic hot melt resin in the reaction kettle are uniformly mixed; and stopping mixing after substances in the reaction kettle are uniformly mixed, and obtaining the hot melt adhesive based on the revulsive orientation of the magnetic particles.
Description
Technical field
The invention belongs to hot melt adhesive field, particularly one is used for buried pipe-line rot-resistant hot melt adhesive and preparation method thereof.
Background technology
Oil-gas pipeline corrosion not only causes oil and gas leakage, also can cause the accident such as fire, blast, causes the serious consequence such as environmental pollution, stop work and production, even loss of life and personal injury.The method of the coated external anti-corrosion layer of anticorrosion normal employing of buried oil and gas pipes and repaired mouth, external anti-corrosion layer is the shrink belt of coating certain thickness hot melt adhesive, preservative coat is coated on tubing repaired mouth place during use, then hot melt adhesive melting is made to its heating, rely on the convergent force of its shrink belt to make hot melt adhesive be close to joint coating on pipeline place, namely complete rotproofing.Production practice and excavation questionnaire open conduit preventing corrosion of repaired mouth layer lost efficacy mainly or flowing property not enough by melt viscosity knotting strength not good caused by.
For hot melt adhesive imperfect bonding and construction poor fluidity problem, have bibliographical information to improve one's methods as follows: (1) carries out graft modification to ethylene-vinyl acetate copolymer, to increase its polarity, but increase along with polarity, the coating layer polyethylene bonding performance of itself and oil and gas pipes can decline; (2) study hot melt adhesive basic components, the composition of namely being filled a prescription by Research foundation determines optimum formula, but its effect of optimization only can realize in certain limit, generally speaking still can not meet the requirement of Practical Project; (3) add inorganic powder or the second polymeric constituent blending and modifying, although the method improves adhesive property, construction mobility declines a lot, is difficult to the cohesive force simultaneously improving two bonding interfaces.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of hot melt adhesive based on magnetic particle induced orientation and preparation method thereof, described hot melt adhesive not only has high cohesive strength, and has good construction mobility.
Hot melt adhesive based on magnetic particle induced orientation provided by the invention, be made up of basal heat melten gel and inorganic particle, the mass ratio of inorganic particle and basal heat melten gel is 1 ~ 10 ︰ 20, the component of described basal heat melten gel and the mass percent of each component as follows:
Ethylene-vinyl acetate copolymer 50 ~ 70%
Tackifying resin 20 ~ 40%
Softening agent 5 ~ 15%.
Hot melt adhesive based on magnetic particle induced orientation provided by the invention, described inorganic particle is α-Fe
2o
3, γ-Fe
2o
3, Fe
3o
4, cobalt, nickel, cobalt-nickel alloy, iron nickel alloy, any one in alumino nickel, its particle diameter is 0.1 μm ~ 2 μm.
Hot melt adhesive based on magnetic particle induced orientation provided by the invention, in described ethylene-vinyl acetate copolymer, the mass percent of vinyl acetate is 25 ~ 30%.
Hot melt adhesive based on magnetic particle induced orientation provided by the invention, described tackifying resin is Gum Rosin or terpine resin; Described softening agent is paraffin.
Hot melt adhesive based on magnetic particle induced orientation provided by the invention, the preferred following mass percent of component of described basal heat melten gel:
Ethylene-vinyl acetate copolymer 50 ~ 60%
Tackifying resin 26 ~ 38%
Softening agent 7 ~ 15%.
The preparation method of the hot melt adhesive based on magnetic particle induced orientation provided by the invention, with basal heat melten gel and inorganic particle for raw material, the mass ratio of inorganic particle and basal heat melten gel is 1 ~ 10 ︰ 20, the component of described basal heat melten gel and the mass percent of each component as follows:
Ethylene-vinyl acetate copolymer 50 ~ 70%
Tackifying resin 20 ~ 40%
Softening agent 5 ~ 15%;
Processing step is as follows:
Tackifying resin to be joined in reactor and be heated to its melting temperature and keep this temperature, then stir, when after the complete melting of tackifying resin, ethylene-vinyl acetate copolymer is added in reactor, after tackifying resin mixes with ethylene-vinyl acetate copolymer, softening agent is added in reactor, after in reactor, each component of basal heat melten gel mixes, inorganic particle is added in reactor, stop stirring after each material in reactor mixes, obtain the hot melt adhesive based on magnetic particle induced orientation.
In aforesaid method, described inorganic particle is α-Fe
2o
3, γ-Fe
2o
3, Fe
3o
4, cobalt, nickel, cobalt-nickel alloy, iron nickel alloy, any one in alumino nickel, its particle diameter is 0.1 μm ~ 2 μm.
In aforesaid method, in described ethylene-vinyl acetate copolymer, the mass percent of vinyl acetate is 25 ~ 30%.
In aforesaid method, described tackifying resin is Gum Rosin or terpine resin; Described softening agent is paraffin.
In aforesaid method, the preferred following mass percent of raw material of basal heat melten gel:
Ethylene-vinyl acetate copolymer 50 ~ 60%
Tackifying resin 26 ~ 38%
Softening agent 7 ~ 15%.
The using method of the hot melt adhesive based on magnetic particle induced orientation of the present invention is as follows:
Described hot-melt is overlying on crosslinked polyethylene shrink belt, by steel tube surface polishing to smooth, heating steel pipe, and the crosslinked polyethylene shrink belt being coated with hot melt adhesive is close on steel pipe, then heat described shrink belt with flame spray gun to shrink to it, meanwhile, coating hot melt adhesive melting thereon and with crosslinked polyethylene shrink belt and steel pipe tight bond, realize the outer cladding of steel pipe.
The present invention has following beneficial effect:
1, hot melt adhesive based on magnetic particle induced orientation of the present invention, inorganic particle is with the addition of in basal heat melten gel, exist between magnetic particle and ethylene-vinyl acetate copolymer polar group are strong and interact, during use, there is Magnetic force tracting effect in magnetic particle and iron-based pipeline enclosure, when hot melt adhesive heating and melting, orientation movement is there is in polarity and the nonpolar segment of hot melt adhesive under the draw of magnetic force, be formed in the interface with tube contacts containing more polarity segment, oriented structure containing more nonpolar segment in the interface contacted with polyethylene, thus improve similarity and the cohesive action power at two interfaces.
2, the hot melt adhesive based on magnetic particle induced orientation of the present invention, can need the adjustment molecular weight of ethylene-vinyl acetate copolymer and the content of softening agent according to different, thus reach the object of its construction mobility of adjustment, applied widely.
3, the invention provides a kind of method of modifying of new hot melt adhesive, the method for the invention adopts conventional equipment processing, simple to operate, is convenient to suitability for industrialized production.
Embodiment
Below by embodiment, a kind of hot melt adhesive based on magnetic particle induced orientation of the present invention and preparation method thereof is described further.
Embodiment 1
In the present embodiment, with basal heat melten gel and inorganic particle for raw material preparation is based on the hot melt adhesive of magnetic particle induced orientation.Basal heat melten gel is by ethylene-vinyl acetate copolymer (mass percent of vinyl acetate is 28%), tackifying resin rosin (Xichang resin processing plant produces, technical grade) and softening agent 54
#paraffin forms, and the mass percent of each component is as follows:
Ethylene-vinyl acetate copolymer 55.6%,
Rosin 33.3%,
54
#paraffin 11.1%.
Inorganic particle selects Fe
3o
4, particle diameter is 1.4 μm, Fe
3o
4be 3 ︰ 20 with the mass ratio of above-mentioned basal heat melten gel.
Processing step is as follows:
Tackifying resin rosin is joined in reactor, after being heated to the fusing point (about 90 DEG C) of tackifying resin, keep this temperature, open whipping appts to stir with the speed of 30r/min, when after the complete melting of tackifying resin, in reactor, add ethylene-vinyl acetate copolymer, after tackifying resin rosin mixes with ethylene-vinyl acetate copolymer, in reactor, add softening agent paraffin, each basal heat melten gel component in question response still mixes and namely obtains basal heat melten gel F
0, continue after in reactor, add Fe again
3o
4, be stirred to each material in reactor and mix, obtain based on Fe
3o
4the hot melt adhesive F of induced orientation
1.
Embodiment 2
In the present embodiment, the component of raw material basal heat melten gel and the mass percent of each component identical with embodiment 1, inorganic particle is identical with embodiment 1 (is Fe
3o
4, particle diameter 1.4 μm).Fe
3o
4be 6 ︰ 20 with the mass ratio of basal heat melten gel.
In the present embodiment, the processing step prepared based on the hot melt adhesive of magnetic particle induced orientation is identical with embodiment 1, obtains based on Fe
3o
4the hot melt adhesive F of induced orientation
2.
Embodiment 3
In the present embodiment, the component of raw material basal heat melten gel and the mass percent of each component identical with embodiment 1, inorganic particle is identical with embodiment 1 (is Fe
3o
4, particle diameter 1.4 μm).Fe
3o
4be 9 ︰ 20 with the mass ratio of basal heat melten gel.
In the present embodiment, the processing step prepared based on the hot melt adhesive of magnetic particle induced orientation is identical with embodiment 1, obtains based on Fe
3o
4the hot melt adhesive F of induced orientation
3.
Embodiment 4
In the present embodiment, the component of raw material basal heat melten gel and the mass percent of each component identical with embodiment 1, inorganic particle is identical with embodiment 1 (is Fe
3o
4, particle diameter 1.4 μm).Fe
3o
4be 10 ︰ 20 with the mass ratio of basal heat melten gel.
In the present embodiment, the processing step prepared based on the hot melt adhesive of magnetic particle induced orientation is identical with embodiment 1, obtains based on Fe
3o
4the hot melt adhesive F of induced orientation
4.
Embodiment 5
The present embodiment is to the basal heat melten gel F prepared according to embodiment 1
0and embodiment 1 ~ 4 prepare based on Fe
3o
4the hot melt adhesive F of induced orientation
1, F
2, F
3, F
4carry out adhesive property and orientation factor test respectively.
Respectively by basal heat melten gel F
0and based on Fe
3o
4the hot melt adhesive F of magnetic particle induced orientation
1, F
2, F
3, F
4be coated on crosslinked polyethylene shrink belt, by steel tube surface polishing to smooth, heating steel pipe, and will F be coated with
0~ F
4polyethylene pyrocondensation belt be close on steel pipe, then shrink to it with flame spray gun heat cross-linking polyethylene thermal contraction strap, meanwhile, coating F thereon
0~ F
4hot melt adhesive melting and with polyethylene thermal contraction strap and steel pipe tight bond.Then according to GB/T2792-1998 " pressure-sensitive adhesive tape test method " standard testing tackiness agent 180o cohesive force experimental technique respectively to described F
0~ F
4hot melt adhesive carries out peel strength test.Shearing resistance is according to ISO4587-1979 " mensuration of tackiness agent-high-strength adhesive tensile lap shear strength " standard testing, and orientation degree adopts infrared dichroism test, and flowing property adopts fusion index instrument test.Shown in test result following table.
As can be seen from the above table, F
1~ F
4with F
0compare, its stripping strength and shearing resistance all have and significantly improve, and add magnetic particle Fe
3o
4after, hot melt adhesive defines oriented structure in bonding process, construction mobility, also along with adding of inorganic particle improves, shows as the increase of melting index, shows that the method for the invention is a kind of method of ideal improvement hot melt adhesive adhesive property and construction mobility.
Claims (6)
1. the hot melt adhesive based on magnetic particle induced orientation, it is characterized in that this hot melt adhesive is made up of basal heat melten gel and inorganic particle, the mass ratio of inorganic particle and basal heat melten gel is 1 ~ 10 ︰ 20, the component of described basal heat melten gel and the mass percent of each component as follows:
Ethylene-vinyl acetate copolymer 50 ~ 70%
Tackifying resin 20 ~ 40%
Softening agent 5 ~ 15%;
In described ethylene-vinyl acetate copolymer, the mass percent of vinyl acetate is 25 ~ 30%, and the particle diameter of inorganic particle is 0.1 μm ~ 2 μm.
2., according to claim 1 based on the hot melt adhesive of magnetic particle induced orientation, it is characterized in that described inorganic particle is α-Fe
2o
3, γ-Fe
2o
3, Fe
3o
4, cobalt, nickel, cobalt-nickel alloy, iron nickel alloy, any one in alumino nickel.
3. according to claim 1 or 2 based on the hot melt adhesive of magnetic particle induced orientation, it is characterized in that described tackifying resin is Gum Rosin or terpine resin; Described softening agent is paraffin.
4. the preparation method based on the hot melt adhesive of magnetic particle induced orientation, it is characterized in that with basal heat melten gel and inorganic particle for raw material, the mass ratio of inorganic particle and basal heat melten gel is 1 ~ 10 ︰ 20, the component of described basal heat melten gel and the mass percent of each component as follows:
Ethylene-vinyl acetate copolymer 50 ~ 70%
Tackifying resin 20 ~ 40%
Softening agent 5 ~ 15%;
In described ethylene-vinyl acetate copolymer, the mass percent of vinyl acetate is 25 ~ 30%, and the particle diameter of inorganic particle is 0.1 μm ~ 2 μm;
Processing step is as follows:
Tackifying resin to be joined in reactor and be heated to its melting temperature and keep this temperature, then stir, when after the complete melting of tackifying resin, ethylene-vinyl acetate copolymer is added in reactor, after tackifying resin mixes with ethylene-vinyl acetate copolymer, softening agent is added in reactor, after in reactor, each component of basal heat melten gel mixes, inorganic particle is added in reactor, stop stirring after each material in reactor mixes, obtain the hot melt adhesive based on magnetic particle induced orientation.
5., according to claim 4 based on the preparation method of the hot melt adhesive of magnetic particle induced orientation, it is characterized in that described inorganic particle is α-Fe
2o
3, γ-Fe
2o
3, Fe
3o
4, cobalt, nickel, cobalt-nickel alloy, iron nickel alloy, any one in alumino nickel.
6. according to claim 4 or 5 based on the preparation method of the hot melt adhesive of magnetic particle induced orientation, it is characterized in that described tackifying resin is Gum Rosin or terpine resin; Described softening agent is paraffin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210385432.XA CN102898976B (en) | 2012-10-12 | 2012-10-12 | Hot melt adhesive based on revulsive orientation of magnetic particles and preparation method of hot melt adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210385432.XA CN102898976B (en) | 2012-10-12 | 2012-10-12 | Hot melt adhesive based on revulsive orientation of magnetic particles and preparation method of hot melt adhesive |
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| Publication Number | Publication Date |
|---|---|
| CN102898976A CN102898976A (en) | 2013-01-30 |
| CN102898976B true CN102898976B (en) | 2015-06-10 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106634743B (en) * | 2016-12-30 | 2019-01-01 | 沈阳万合胶业股份有限公司 | Colloidal materials, Preparation method and use with information record function |
| CN108192529A (en) * | 2017-12-13 | 2018-06-22 | 广州艾科洛克建筑材料技术开发有限公司 | A kind of new type hot-melt adhesive that microwave heating can be used and preparation method thereof |
| CN108192530A (en) * | 2017-12-26 | 2018-06-22 | 上海邦中高分子材料有限公司 | A kind of improvement EVA/Fe3O4The method of magnetic hot melt adhesive interface compatibility |
| CN108394622A (en) * | 2018-03-16 | 2018-08-14 | 刘华 | It is a kind of magnetism viscose glue, can magnetic separation recovery packing container and packaging waste recovery method |
| CN110964471A (en) * | 2019-12-30 | 2020-04-07 | 广州合曼电子科技有限公司 | Magnetism-increasing adhesive and preparation method thereof |
| CN113061407B (en) * | 2021-04-01 | 2022-11-01 | 杭州索日智能装备有限公司 | EVA composite hot melt adhesive, and preparation method and use method thereof |
| CN114058296B (en) * | 2021-12-21 | 2022-12-06 | 北京工商大学 | Electromagnetic shielding function composite pressure-sensitive adhesive with oriented structure and preparation method thereof |
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| US6855760B1 (en) * | 1999-05-26 | 2005-02-15 | Henkel Kommanditgesellschaft Auf Aktien | Detachable adhesive compounds |
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| JP2724272B2 (en) * | 1992-08-10 | 1998-03-09 | 凸版印刷株式会社 | Hot melt adhesive composition for bookbinding |
| US20040045666A1 (en) * | 2002-09-06 | 2004-03-11 | Lie-Zhong Gong | Hot melt adhesive and use thereof |
| CN101092545A (en) * | 2006-06-23 | 2007-12-26 | 白虹 | Magnetic conductive hot-melt adhesive |
| CN101981152A (en) * | 2008-03-27 | 2011-02-23 | 琳得科株式会社 | Adhesive composition, adhesive sheet, and adhesive molded product |
| CN102108269A (en) * | 2009-12-24 | 2011-06-29 | 上海理日化工新材料有限公司 | Ethylene-vinylacetate copolymer resin hot melt adhesive with high melting point, fast curing and low viscosity |
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- 2012-10-12 CN CN201210385432.XA patent/CN102898976B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6855760B1 (en) * | 1999-05-26 | 2005-02-15 | Henkel Kommanditgesellschaft Auf Aktien | Detachable adhesive compounds |
Non-Patent Citations (1)
| Title |
|---|
| "EVA热熔胶对金属与塑料粘结性能的研究";刘文胜;《弹性体》;20090225;第19卷(第1期);第33-34页 * |
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